Suigen, South Korea
Suigen, South Korea

Samsung is a South Korean multinational conglomerate company headquartered in Samsung Town, Seoul. It comprises numerous subsidiaries and affiliated businesses, most of them united under the Samsung brand, and is the largest South Korean chaebol .Samsung was founded by Lee Byung-chul in 1938 as a trading company. Over the next three decades, the group diversified into areas including food processing, textiles, insurance, securities and retail. Samsung entered the electronics industry in the late 1960s and the construction and shipbuilding industries in the mid-1970s; these areas would drive its subsequent growth. Following Lee's death in 1987, Samsung was separated into four business groups – Samsung Group, Shinsegae Group, CJ Group and Hansol Group. Since 1990s, Samsung has increasingly globalized its activities, and electronics, particularly mobile phones and semiconductors, have become its most important source of income.Notable Samsung industrial subsidiaries include Samsung Electronics , Samsung Heavy Industries , and Samsung Engineering and Samsung C&T . Other notable subsidiaries include Samsung Life Insurance , Samsung Everland , Samsung Techwin and Cheil Worldwide .Samsung has a powerful influence on South Korea's economic development, politics, media and culture, and has been a major driving force behind the "Miracle on the Han River". Its affiliate companies produce around a fifth of South Korea's total exports. Samsung's revenue was equal to 17% of South Korea's $1,082 billion GDP.In 2013, Samsung began construction on building the world's largest mobile phone factory in the Thai Nguyen province of Vietnam.Samsung has been able to achieve the largest market share of nearly 31% in the global smartphone segment, as of 2013. Wikipedia.

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Patent
Samsung | Date: 2017-03-29

An energy storage system (100) includes a battery system (200), a direct current link (300), and a controller (105). The battery system includes battery racks (210) that respectively include rack battery management systems (211). The battery racks (210) are divided into a first group (221) comprising at least one first battery rack (210a) including a first battery (213a) and a second group (223) comprising at least one second battery rack (210b) including a second battery (213b), wherein the direct current link (300) is connected to the battery system (200) and the controller (105) determines the operation mode of the battery system (200) from one of a charge mode or a discharge mode. The controller (105) performs a control operation in the charge mode to charge the first battery rack (210a) and not operate the second battery rack (210b), and performs a control operation in the discharge mode to discharge the second battery rack (210b) and not operate the first battery rack (210a).

Claims which contain your search:

1. An energy storage system (100), comprising:a battery system (200) including a plurality of battery racks (210), the battery racks (210) respectively including a plurality of rack battery management systems (BMSs) (211), the battery racks (210) being divided into a first group (221) comprising at least one first battery rack (210a) including a first battery (213a) and a second group (223) comprising at least one second battery rack (210b) including a second battery (213b);a direct current (DC) link (300) connected to the battery system (200); anda controller (105) adapted to determine an operation mode of the battery system (200) from one of a charge mode or a discharge mode, wherein the controller (105) is adapted to perform a control operation in the charge mode to charge the at least one first battery rack (210a) while the at least one second battery rack (210b) is not operated and is adapted to perform a control operation in the discharge mode to discharge the at least one second battery rack (210b) while the at least one first battery rack (210a) is not operated.

2. The system as claimed in claim 1, further comprising:a first DC-DC converter (230a) connected between the at least one first battery rack (210a) and the DC link (300); anda second DC-DC converter (230b) connected between the at least one second battery rack (210b) and the DC link.

3. The system as claimed in claim 1 or 2, wherein, when the at least one second battery rack (210b) is discharged to a state of charge (SOC) less than a first reference value, the controller (105) is adapted to control charging of the at least one second battery rack (210b) while the at least one first battery rack (210a) is not operated in the charge mode and to control discharging of the at least one first battery rack (210a) while the at least one second battery rack (210b) is not operated in the discharge mode.

4. The system as claimed in one of the preceding claims, wherein, when the at least one first battery rack (210a) is charged to an SOC greater than a second reference value, the controller (105) is adapted to control discharging of the at least one first battery rack (210a) while the at least one second battery rack (210b) is not operated in the discharge mode and is adapted to control charging of the at least one second battery rack (210b) while the at least one first battery rack (210a) is not operated in the charge mode.

5. The system as claimed in one of the preceding claims, wherein the rack BMSs (211) are adapted to determine states of charge (SOC) of respective ones of the battery racks (210).

6. The system as claimed in claim 5, wherein the rack BMSs (211) are adapted to transmit the SOC of the respective ones of the battery racks (210) to the controller (105).

7. The system as claimed in one of the preceding claims, wherein the first group (221) comprises a plurality of first battery racks (210a), the second group comprises a plurality of second battery racks (210b), and wherein the battery system (200) further comprises a plurality of DC-DC converters (230a1, 230a2, 230b1, 230b2), each DC-DC converter (230a1, 230a2, 230b1, 230b2) being connected between a respective one of the plurality of battery racks (210a, 210b) and the DC link (300).

8. The system as claimed in claim 7, wherein the controller (105) is adapted to control the DC-DC converters (230a1, 230a2, 230b1, 230b2) to adjust the SOC of the battery racks (210a, 210b) to be outside a first SOC range.

9. The system as claimed in claim 8, wherein, when the SOC of one of the plurality of first battery racks (210a) is within the first SOC range, the controller (105) is adapted to control charging of the first battery rack (210a) using at least one of the second battery racks (210b) as a power source until the SOC of the first battery rack (210a) is adjusted to exceed the first SOC range.

10. The system as claimed in claim 8 or 9, wherein, when the SOC of at least one of the second battery racks (210b) is within the first SOC range, the controller (105) is adapted to discharge the second battery rack (210b) and to charge at least one of the first battery racks (210a) with the electricity discharged from the second battery rack (210b) until the SOC of the second battery rack (210b) is adjusted below the first SOC range.

11. The system as claimed in claim 8, wherein, when the SOC of the second battery rack (210b) staying in a rest state in the charge mode is within the first SOC range, the controller (105) is adapted to control discharging of the second battery rack (210b) and to control charging of the first battery rack (210a) with electricity discharged from the second battery rack (210b) until the SOC of the second battery rack (210b) is adjusted below the first SOC range.

12. The energy storage system as claimed in claim 8 or 11, wherein, when the SOC of the first battery rack (210a) staying in a rest state in the discharge mode is within the first SOC range, the controller (105) is adapted to control charging of the first battery rack (210a) using the second battery rack (210b) as a power source until the SOC of the first battery rack (210a) is adjusted to exceed the first SOC range.

13. The energy storage system as claimed in one of the preceding claims, wherein the controller (105) is adapted to determine the operation mode of the battery system (200) from one of the charge mode or the discharge mode based on DC link voltage of the DC link (300).

14. An apparatus, comprising:an interface; andan energy storage system (100) according to one of the preceding claims;wherein the controller (105) of the storage system (100) is adapted to determine an operation mode of a battery system from one of a charge mode or a discharge mode, to send one or more signals to the interface to control charging of the first battery rack (210a) in the charge mode during which the second battery rack (210b) is not operated, and to send one or more signals to the interface to control discharging of the second battery rack (210b) in the discharge mode during which the first battery rack (210a) is not operated.


Provided are an energy storage system case and an energy storage system including the same. An energy storage system case includes: a body unit including a battery accommodating unit configured to accommodate a plurality of batteries, and a control module mounting unit on both sides of which control modules are configured to be mounted to control charge/discharge of a plurality of batteries; a casing cover coupled to the body unit; and a heat-dissipation unit located opposite the casing cover and coupled to the control module mounting unit to dissipate heat generated by a first control module among the control modules to an outside thereof.

Claims which contain your search:

1. An energy storage system case comprising: a body unit comprising a battery accommodating unit configured to accommodate a plurality of batteries, and a control module mounting unit on both sides of which control modules are configured to be mounted to control charge/discharge of a plurality of batteries; a casing cover coupled to the body unit; and a heat-dissipation unit located opposite the casing cover and coupled to the control module mounting unit to dissipate heat generated by a first control module among the control modules to an outside thereof.

2. The energy storage system case of claim 1, wherein the control module mounting unit comprises a mounting plate haying an opening formed therein, and a first side and a second side of the mounting plate are in communication with each other through the opening.

3. The energy storage system case of claim 2, wherein a first control module is configured to be mounted on the first side of the mounting plate to contact the heat-dissipation unit mounted on the second side of the mounting plate through the opening.

4. The energy storage system case of claim 3, wherein the heat-dissipation unit is coupled to the second side of the mounting plate to block the opening.

5. The energy storage system case of claim 4, wherein the casing caver is coupled to the body unit to face the first side of the mounting plate, and a first control module is configured to be arranged between the casing cover and the first side of the mounting plate and closed from an outside thereof by the casing cover and the heat-dissipation unit.

6. The energy storage system case of claim 5, wherein the heat-dissipation unit comprises a base unit and a heat-dissipation fin extending from the base unit, and the base unit and the second side of the mounting plate are adhered to each other by an adhesion unit arranged therebetween.

7. The energy storage system case of claim 8, wherein the adhesion unit comprises a first adhesion layer, a second adhesion layer, and a foam layer located between the first adhesion layer and the second adhesion layer.

8. The energy storage system case of claim 8, wherein the adhesion unit is arranged around the opening.

9. The energy storage system case of claim 4, wherein a second control module among the control modules is configured to be mounted on the second side of the mounting plate spaced apart from the heat-dissipation unit, and the first control module has a larger heat generation amount than the second control module in an operation for controlling the charge/discharge of the plurality of batteries.

10. The energy storage system case of claim 9, further comprising a control module cover coupled to the second side of the mounting plate and configured to cover the second control module, wherein the control module cover and the second side of the mounting plate are adhered to each other by an adhesion unit arranged therebetween.

11. The energy storage system case of claim 4, further comprising a heat-dissipation cover coupled to the body unit to face the second side of the mounting plate, wherein each of the heat-dissipation cover and the casing cover forms a flat surface with the body unit.

12. An energy storage system comprising the energy storage system case of claim 1, the energy storage system further comprising a plurality of batteries accommodated in the battery accommodating unit, and control modules mounted on both sides of the control module mounting unit and configured to control charge/discharge of the plurality of batteries.

13. The energy storage system of claim 12, wherein the control module mounting unit comprises a mounting plate having an opening formed therein, and a first side and a second side of the mounting plate are in communications with each other through the opening.

14. The energy storage system of claim 13, wherein a first control module among the control modules is mounted on the first side of the mounting plate, and the first control module contacts the heat-dissipation unit mounted on the second side of the mounting plate through the opening.

15. The energy storage system of claim 14, wherein the heat-dissipation unit is coupled to the second side of the mounting plate to block the opening.

16. The energy storage system of claim 15, wherein the casing cover is coupled to the body unit to face the first side of the mounting plate, and the first control module between the casing cover and the first side of the mounting plate is closed from an outside thereof by the casing cover and the heat-dissipation unit.

17. The energy storage system of claim 16, wherein the heat-dissipation unit comprises a base unit and a heat-dissipation fin extending from the base unit, and the base unit and the second side of the mounting plate are adhered to each other by an adhesion unit arranged therebetween.

18. The energy storage system of claim 15, a second control module among the control modules is mounted on the second side of the mounting plate spaced apart from the heat-dissipation unit, and the first control module has a larger heat generation amount than the second control module in an operation for controlling the charge/discharge of the plurality of batteries.

19. The energy storage system of claim 18, further comprising a control module cover coupled to the second side of the mounting plate to cover the second control module, wherein the control module cover and the second side of the mounting plate are adhered to each other by an adhesion unit arranged therebetween.

20. The energy storage system of claim 15, further comprising a heat-dissipation cover coupled to the body unit to face the second side of the mounting plate, wherein each of the heat-dissipation cover and the casing cover forms a fiat surface with the body unit.


A battery pack includes: a battery including at least one battery cell; a power line communicator connected to a current path to detect a first data signal; and a battery management system (BMS) to receive the first data signal from the power line communicator, and to control the battery according to the first data signal.

Claims which contain your search:

1. A battery pack comprising: a battery comprising at least one battery cell; a power line communicator connected to a current path to detect a first data signal; and a battery management system (BMS) configured to receive the first data signal from the power line communicator, and to control the battery according to the first data signal.

2. The battery pack of claim 1, wherein the first data signal comprises: a signal corresponding to a location of the battery; and a control signal for the battery.

3. The battery pack of claim 1, wherein the battery is connected to the power line communicator in parallel via the current path.

4. The battery pack of claim 1, wherein the BMS is configured to communicate with the power line communicator via a Serial Peripheral Interface (SPI).

5. The battery pack of claim 1, wherein the first data signal is to flow along the current path via the battery.

6. The battery pack of claim 1, wherein the BMS is configured to monitor a state of the battery, and to transmit information corresponding to the state of the battery to the power line communicator.

7. The battery pack of claim 6, wherein the power line communicator is configured to output, to the current path, a second data signal including the information corresponding to the state of the battery received from the BMS.

8. The battery pack of claim 6, wherein the information corresponding to the state of the battery comprises information corresponding to a state of charge (SOC), a voltage, a current, and/or a temperature of the at least one battery cell.

9. An energy storage system (ESS) comprising: a plurality of battery packs connected to each other in series; a master communicator configured to output a first data signal via a current path along the plurality of battery packs; and a controller configured to control the master communicator to output the first data signal, wherein each of the plurality of battery packs comprises:a battery comprising at least one battery cell;a slave communicator connected to the current path to detect the first data signal; anda battery management system (BMS) configured to receive the first data signal from the slave communicator, and to control an operation of the battery according to the first data signal.

10. The ESS of claim 9, wherein the first data signal comprises: a signal corresponding to a location of the battery; and a control signal for the battery.

11. The ESS of claim 9, wherein the battery is connected to the slave communicator in parallel via the current path.

13. The ESS of claim 9, wherein the first data signal is to flow along the current path via the battery.

14. The ESS of claim 9, wherein the BMS is configured to monitor a state of the battery, and to transmit information corresponding to the state of the battery to the slave communicator.

15. The ESS of claim 14, wherein the slave communicator is configured to output, to the current path, a second data signal including the information corresponding to the state of the battery received from the BMS.

17. The ESS of claim 14, wherein the information corresponding to the state of the battery comprises information corresponding to a state of charge (SOC), a voltage, a current, and/or a temperature of the at least one battery cell.


Patent
Samsung | Date: 2016-07-28

An energy storage system includes a battery system, a direct current link, and a controller. The battery system includes battery racks that respectively include rack battery management systems. The battery racks are divided into at least one first battery rack including a first battery and at least one second battery rack including a second battery. The direct current link is connected to the battery system. The controller determines the operation mode of the battery system from one of a charge mode or a discharge mode. The controller performs a control operation in the charge mode to charge the first battery rack and not operate the second battery rack, and performs a control operation in the discharge mode to discharge the second battery rack and not operate the first battery rack.

Claims which contain your search:

1. An energy storage system, comprising: a battery system including a plurality of battery racks, the battery racks respectively including a plurality of rack battery management systems (BMSs), the battery racks divided into at least one first battery rack including a first battery and at least one second battery rack including a second battery; a direct current (DC) link connected to the battery system; and a controller to determine an operation mode of the battery system from one of a charge mode or a discharge mode, wherein the controller is to perform a control operation in the charge mode to charge the first battery rack while the second battery rack is not operated and is to perform a control operation in the discharge mode to discharge the second battery rack while the first battery rack is not operated.

2. The system as claimed in claim 1, further comprising: a first DC-DC converter connected between the first battery rack and the DC link; and a second DC-DC converter connected between the second battery rack and the DC link.

3. The system as claimed in claim 1, wherein, when the second battery rack is discharged to a state of charge (SOC) less than a first reference value, the controller is to control charging of the second battery rack while the first battery rack is not operated in the charge mode and to control discharging of the first battery rack while the second battery rack is not operated in the discharge mode.

4. The system as claimed in claim 1, wherein, when the first battery rack is charged to an SOC greater than a second reference value, the controller is to control discharging of the first battery rack while the second battery rack is not operated in the discharge mode and is to control charging of the second battery rack while the first battery rack is not operated in the charge mode.

5. The system as claimed in claim 1, wherein the rack BMSs are to determine states of charge (SOC) of respective ones of the battery racks.

6. The system as claimed in claim 5, wherein the rack BMSs are to transmit the SOC of the battery racks to the controller.

7. The system as claimed in claim 1, further comprising a plurality of DC-DC converters connected in series to the battery racks, respectively.

8. The system as claimed in claim 7, wherein the controller is to control the DC-DC converters to adjust SOC of the battery racks to be outside a first SOC range.

9. The system as claimed in claim 8, wherein, when the SOC of the first battery rack is within the first SOC range, the controller is to control charging of the first battery rack using the second battery rack as a power source until the SOC of the first battery rack is adjusted to exceed the first SOC range.

10. The system as claimed in claim 8, wherein, when the SOC of the second battery rack is within the first SOC range, the controller is to discharge the second battery rack and to charge the first battery rack with electricity discharged from the second battery rack until the SOC of the second battery rack is adjusted below the first SOC range.

11. The system as claimed in claim 8, wherein, when the SOC of the second battery rack staying in a rest state in the charge mode is within the first SOC range, the controller is to control discharging of the second battery rack and to control charging of the first battery rack with electricity discharged from the second battery rack until the SOC of the second battery rack is adjusted below the first SOC range.

12. The energy storage system as claimed in claim 8, wherein, when the SOC of the first battery rack staying in a rest state in the discharge mode is within the first SOC range, the controller is to control charging of the first battery rack using the second battery rack as a power source until the SOC of the first battery rack is adjusted to exceed the first SOC range.

13. The energy storage system as claimed in claim 1, wherein the controller is to determine the operation mode of the battery system from one of the charge mode or the discharge mode based on DC link voltage of the DC link.

14. An apparatus, comprising: an interface; and a controller to determine an operation mode of a battery system from one of a charge mode or a discharge mode, the controller to send one or more signals through the interface to control charging of a first battery rack in the charge mode during which a second battery rack is not operated, and is to send one or more signals through the interface to control discharging of the second battery rack in the discharge mode during which the first battery rack is not operated.

15. The apparatus as claimed in claim 14, wherein the controller is to determine the operation mode of the battery system based on a DC link voltage of a DC link connected to the battery system.

16. The apparatus as claimed in claim 14, wherein, when the second battery rack is discharged to a state of charge (SOC) less than a first reference value, the controller is to control charging of the second battery rack and not operate the first battery rack in the charge mode and to control discharging of the first battery rack and not operate the second battery rack in the discharge mode.

17. The apparatus as claimed in claim 14, wherein, when the first battery rack is charged to an SOC greater than a second reference value, the controller is to control discharging of the first battery rack and not control the second battery rack in the discharge mode and is to control charging of the second battery rack and is not to operate the first battery rack in the charge mode.


An energy storage system includes a plurality of trays holding battery packs, each tray having a tray controller, and a switch to set an identification code to the tray, and a rack accommodating the plurality of trays, the rack having a rack controller, and fingers corresponding to each switch of the trays, the fingers selectively activating each switch when a corresponding tray is mounted on the rack.

Claims which contain your search:

1. An energy storage system, comprising:a plurality of trays arranged to hold battery packs, each tray including:a tray controller, anda switch arranged to set an identification code for the tray; anda rack accommodating the plurality of trays, the rack including:fingers corresponding to each switch of the trays, the fingers being arranged to selective activate a corresponding switch of a tray when it is mounted on the rack.

2. The energy storage system as claimed in claim 1, wherein the rack includes a rack controller arranged to control the trays.

3. The energy storage system as claimed in claim 1 or 2, wherein each switch has a plurality of holes arranged in a same pattern, wherein the fingers are selectively coupled to the holes of the switch.

4. The energy storage system as claimed in claim 3, wherein the holes are arranged in rows and columns, and a number of fingers corresponding to a number specified by the identification code are arranged at positions corresponding to the holes.

5. The energy storage system as claimed in any one of claims 1 to 4, wherein each tray further comprises a first connector including the switch, and the rack further comprises a second connector including the fingers, the second connector being coupled to the first connector.

6. The energy storage system as claimed in claim 5, wherein the first and second connectors include first guide holes and second guide holes, respectively, the first and second connectors being fastened together by guide bolts passing through the first and second guide holes, and by nuts at a side of the first connector.

7. The energy storage system as claimed in claim 5 or 6, wherein the first connector includes fastening holes at opposite sides thereof, and the second connector includes coupling members coupled to the fastening holes.

8. The energy storage system as claimed in claim 7, wherein each fastening hole includes a protrusion protruding toward the coupling member, and the coupling member includes an insert hole to be coupled to the protrusion.

9. The energy storage system as claimed in any one of claims 1 to 8, wherein the switches of the plurality of trays are identical to each other, and wherein fingers corresponding to each switch have a unique configuration.

10. The energy storage system as claimed in any one of claims 1 to 9, wherein each switch has a plurality of holes arranged in a predetermined pattern, wherein the switches of the plurality of trays have the same predetermined pattern of holes.

11. The energy storage system as claimed in claim 10, wherein the rack includes a connector corresponding to each tray, each connector having a unique configuration of fingers coupled to holes in a corresponding tray.

12. A method for setting an identification code for a tray of an energy storage system, the method comprising:preparing trays with no identification codes;mounting the trays on a rack;automatically assigning identification codes to the trays, as fingers provided on the rack are selectively coupled to a switch in each tray; andsending identification code data to a rack controller in the rack from a tray controller in each tray.


Patent
Samsung | Date: 2016-05-09

An energy storage system including battery packs having a first terminal electrically connected to a first node and a second terminal electrically connected to a second node and configured to receive power from an external device or configured to provide power to the external device through the first and second nodes and a battery management system controlling the battery packs. Each battery pack includes batteries and a transistor unit electrically coupled between the batteries and the first node. The battery management system includes a measuring unit for measuring a state of charge (SOC) of the batteries of each battery pack, and a controller configured to calculate a high value, a low value, an average value, and a difference value between the high and low values from the measured SOCs, and configured to control the transistor units of the battery packs, based on the calculated high, low, average, and difference values.

Claims which contain your search:

1. An energy storage system, comprising: battery packs each having a first terminal electrically connected to a first node, and a second terminal electrically connected to a second node, the battery packs each being configured to receive power from an external device, or configured to provide power to the external device, through the first node and the second node; and a battery management system configured to control the battery packs, wherein each battery pack comprises:batteries; anda transistor unit electrically coupled between the batteries and the first node, and wherein the battery management system comprises:a measuring unit for measuring a state of charge (SOC) of the batteries of each battery pack; anda controller configured to calculate a high value, a low value, an average value, and a difference value between the high value and the low value from the measured SOCs, and configured to control the transistor units of the battery packs, based on the calculated high, low, average, and difference values.

2. The energy storage system of claim 1, wherein the transistor unit comprises: a first transistor; a second transistor electrically coupled in series to the first transistor between the batteries and the first node; a third transistor; and a resistor electrically coupled in series to the third transistor between the batteries and the first node, wherein the first and third transistors are respectively configured to connect or disconnect current from the first node to the batteries via a first current path and a third current path, wherein the second transistor is configured to connect or disconnect current from the batteries to the first node via a second current path, wherein the battery management system is configured to transmit first to third control signals respectively to gate electrodes of the first to third transistors, and wherein a level of current flowing in the first current path is greater than a level of current flowing in the third current path when current is flowing in both the first current path and the third current path.

3. The energy storage system of claim 2, wherein the controller is configured to generate a charge prohibition signal to stop charging of the battery packs when the high value is greater than or equal to a first reference SOC, and wherein the difference value decreases for a set amount of non-charging time when the battery packs are not charged.

4. The energy storage system of claim 3, wherein the transistor unit corresponding to the batteries of the battery pack having a SOC higher than the average value is configured to be controlled differently from the transistor unit corresponding to the batteries of the battery pack having a SOC less than or equal to the average value when the difference value is greater than a reference difference value after the set amount of non-charging time elapses, and wherein all of the transistor units of the battery packs are configured to be controlled the same when the difference value is less than or equal to the reference difference value after the set amount of time elapses, wherein the transistor unit corresponding to the batteries having a SOC corresponding to a second reference SOC is configured to be controlled differently than the transistor units corresponding to the batteries having a SOC lower than the second reference SOC when the high value is greater than or equal to the second reference SOC, and wherein the second reference SOC is higher than the first reference SOC.

5. The energy storage system of claim 4, wherein, when the difference value is greater than the reference difference value after the set amount of non-charging time elapses, the first transistor is turned off and the second and third transistors are turned on in the transistor unit corresponding to the batteries having the SOC that is higher than the average value, and the first and second transistors are turned on and the third transistor is turned off in the transistor unit corresponding to the batteries having the SOC that is less than or equal to the average value, wherein, when the difference value is less than or equal to the reference difference value after the set amount of non-charging time elapses, the first and second transistors of the battery packs are turned on and the third transistors of the battery packs are turned off, and wherein when the high value is greater than or equal to the second reference SOC, the first and third transistors are turned off and the second transistor is turned on in the transistor unit corresponding to the batteries having the SOC that is greater than or equal to the second reference SOC, and the first transistor is turned off and the second and third transistors are turned on in the transistor unit corresponding to the batteries having the SOC that is lower than the second reference SOC.

6. A method of driving an energy storage system comprising: battery packs, each of the battery packs comprising batteries and a transistor unit electrically coupled between the batteries and a first node; and a battery management system configured to measure a state of charge (SOC) of each battery of the battery packs and configured to control the battery packs, the method comprising: charging the battery packs in a first mode until one of the battery packs having a highest SOC reaches a first reference SOC; measuring SOCs of the battery packs; calculating the high value, a low value, an average value, and a difference value between the high value and the low value from the measured SOCs; charging the battery packs in a second mode when the difference value is greater than a reference difference value; and charging the battery packs in a third mode when the difference value is less than or equal to the reference difference value.

7. The method of claim 6, further comprising: stopping the charging of the battery packs for a set amount of non-charging time after the charging of the battery packs in the first mode, and before the measuring the SOCs of the battery packs, such that current does not flow into the battery packs from an external device, and such that the difference value decreases.

8. The method of claim 6, further comprising: controlling the transistor units of all of the battery packs the same during the charging the battery packs in the first mode; controlling the transistor units of all of the battery packs the same during the charging the battery packs in the third mode; and controlling the transistor unit corresponding to the batteries having a SOC higher than the average value differently than the transistor unit corresponding to the batteries having a SOC less than or equal to the average value, wherein the transistor unit comprises:a first transistor;a second transistor electrically coupled in series to the first transistor between the batteries and the first node;a third transistor; anda resistor electrically coupled in series to the third transistor between the batteries and the first node, wherein the first and third transistors are respectively configured to connect or disconnect current from the first node to the batteries via a first current path and a third current path, and wherein the second transistor is configured to connect or disconnect current from the batteries to the first node via a second current path.

9. The method of claim 8, further comprising: turning on the first and second transistors and turning off the third transistors during the charging the battery packs in the first mode; turning the first transistor off and turning the second and third transistors on in the transistor units corresponding to the batteries having the SOC higher than the average value, and turning on the first and second transistors and turning off the third transistor in the transistor units corresponding to the batteries having the SOC less than or equal to the average value, during the charging the battery packs in the second mode; and turning on the first and second transistors and turning off the third transistors during the charging the battery packs in the third mode.

10. The method of claim 8, further comprising: charging the battery packs in a fourth mode when the high value is a second reference SOC; and turning of the first and third transistors and turning on the second transistor in the transistor units corresponding to the batteries having the second reference SOC, and turning off the first transistor and turning on the second and third transistors in the transistor units corresponding to the batteries having the SOC lower than the second reference SOC, during the charging the battery packs in the fourth mode, wherein the second reference SOC is higher than the first reference SOC.


An energy storage system includes a power conversion system configured to produce a control signal for regulating a frequency of power flowing from a power generation system to an electric-power system, and a battery system including a first battery rack, a second battery rack, a charger/discharger configured to perform a charging/discharging operation of the second battery rack, and a rack BMS configured to control the charging/discharging operation of the first and second battery racks using the control signal, and to control the charger/discharger, thus controlling a state of charge (SOC) of the second battery rack.

Claims which contain your search:

1. An energy storage system comprising: a power conversion system configured to produce a control signal for regulating a frequency of power flowing from a power generation system to an electric-power system; and a battery system comprising:a first battery rack;a second battery rack;a charger/discharger configured to perform a charging/discharging operation of the second battery rack; anda rack battery management system (BMS) configured to control the charging/discharging operation of the first and second battery racks using the control signal, and to control the charger/discharger, thus controlling a state of charge (SOC) of the second battery rack.

2. The energy storage system of claim 1, wherein the control signal comprises: a charge control signal causing the power to be charged into the first or second battery rack when the frequency of the power flowing in the electric-power system exceeds a set value; and a discharge control signal causing the first or second battery rack to be discharged, thus supplying power to the electric-power system when the frequency of the power flowing in the electric-power system is less than the set value.

3. The energy storage system of claim 2, wherein, when the control signal is the charge control signal, the rack BMS performs control such that the power is charged into the first battery rack when a state of charge of the first battery rack is less than a first state of charge, and performs control such that the power is charged into the second battery rack when the state of charge of the first battery rack is equal to or more than the first state of charge.

4. The energy storage system of claim 3, wherein, when the state of charge of the second battery rack increases to exceed a second state of charge and the power is being charged into the second battery rack, the rack BMS controls the charger/discharger to discharge the second battery rack such that the state of charge of the second battery rack maintains the second state of charge.

5. The energy storage system of claim 3, wherein, when the first battery rack is charged or discharged in response to the control signal, the rack BMS controls the charger/discharger such that the state of charge of the second battery rack has a fifth state of charge.

6. The energy storage system of claim 5, wherein the fifth state of charge is about 50%.

7. The energy storage system of claim 2, wherein, when the control signal is the discharge control signal, the rack BMS performs control such that the first battery rack is discharged when a state of charge of the first battery rack is more than a third state of charge, and performs control such that the second battery rack is discharged when the state of charge of the first battery rack is equal to or less than the third state of charge.

8. The energy storage system of claim 7, wherein, when the state of charge of the second battery rack is less than a fourth state of charge and the second battery rack is being discharged, the rack BMS controls the charger/discharger to charge the second battery rack such that the state of charge of the second battery rack maintains the fourth state of charge.

9. The energy storage system of claim 7, wherein, when the first battery rack is charged or discharged in response to the control signal, the rack BMS controls the charger/discharger such that the state of charge of the second battery rack has a fifth state of charge.

10. The energy storage system of claim 9, wherein the fifth state of charge is about 50%.

11. The energy storage system of claim 1, wherein a maximum rated discharge of the second battery rack is larger than a maximum rated discharge of the first battery rack.

12. A method of controlling an energy storage system, the energy storage system comprising: a battery system comprising: a first battery rack; a second battery rack; a charger/discharger configured to charge or discharge the second battery rack; and a power conversion system configured to transmit a control signal for regulating a frequency of power flowing from a power generation system to an electric-power system, the method comprising: determining a priority of charging/discharging the first battery rack or the second battery rack using the control signal and a state of charge of the first battery rack; charging/discharging the first battery rack or the second battery rack to regulate the frequency depending on the determined priority; and controlling a state of charge of the second battery rack to be a set state of charge using the charger/discharger.

13. The method of claim 12, wherein the control signal comprises: a charge control signal causing the power to be charged into the first or second battery rack when the frequency of the power flowing in the electric-power system exceeds a set value; and a discharge control signal causing the first or second battery rack to be discharged, thus supplying power to the electric-power system when the frequency of the power flowing in the electric-power system is less than the set value.

14. The method of claim 13, wherein when the control signal is the charge control signal, at the determining of the priority, the priority is determined such that:when the state of charge of the first battery rack is less than a first state of charge, the power is charged into the first battery rack, andwhen the state of charge of the first battery rack is equal to or more than the first state of charge, the power is charged into the second battery rack.

15. The method of claim 14, wherein, when a state of charge of the second battery rack exceeds a second state of charge, at the controlling of the state of charge of the second battery rack, the charger/discharger is controlled such that the second battery rack is discharged and the state of charge of the second battery rack maintains the second state of charge.

16. The method of claim 13, wherein, when the control signal is the discharge control signal, at the determining of the priority, the priority is determined such that:when the state of charge of the first battery rack is more than a third state of charge, the first battery rack is discharged, andwhen the state of charge of the first battery rack is equal to or less than the third state of charge, the second battery rack is discharged.

17. The method of claim 16, wherein, when state of charge of the second battery rack is less than a fourth state of charge, at the controlling of the state of charge of the second battery rack, the charger/discharger is controlled such that the second battery rack is charged and the state of charge of the second battery rack maintains the fourth state of charge.

18. The method of claim 17, wherein, when the first battery rack is charged or discharged, at the controlling of the state of charge of the second battery rack, the charger/discharger is controlled such that the state of charge of the second battery rack has a fifth state of charge.

20. The method of claim 12, wherein a maximum rated discharge of the second battery rack is larger than a maximum rated discharge of the first battery rack.


There are provided an energy storage system including an energy storage device and a plurality of battery trays connected in parallel, and a method of controlling the same. The method for controlling an energy storage system of a battery tray in an under voltage protection (UVP) status includes performing precharging when a charge voltage is detected, transmitting information indicating that precharging is performed to at least one different tray connected to the battery tray in parallel, and when all of battery trays have performed precharging, simultaneously transmitting information instructing to start charging to the at least one different battery tray.

Claims which contain your search:

1. A method for controlling an energy storage system of a battery tray in an under voltage protection (UVP) status, the method comprising: performing precharging when a charge voltage is detected; transmitting information indicating that precharging is performed to at least one different tray connected to the battery tray in parallel; and when all of battery trays have performed precharging, simultaneously transmitting information instructing to start charging to the at least one different battery tray.

2. The method as claimed in claim 1, wherein the information indicating that precharging is performed is transmitted to the at least one different battery tray using a controller area network (CAN) communication.

3. The method as claimed in claim 1, wherein transmitting the information instructing to start charging includes simultaneously transmitting information instructing start charging to the at least one different battery tray in a state in which all of the battery trays have performed precharging and in a state in which the information indicating that all of the battery trays performed precharging has been transmitted.

4. The method as claimed in claim 1, wherein transmitting the information instructing to start charging includes: determining whether the battery tray is a battery tray for transmitting the information instructing to start charging; and when the battery tray is a battery tray for transmitting information instructing to start charging, simultaneously transmitting the information instructing to start charging to the at least one different battery tray.

5. The method as claimed in claim 4, further comprising: when the battery tray is not a battery tray for transmitting the information instructing to start charging, receiving information instructing to start charging.

9. A battery tray, comprising: at least one battery cell; a charge switch and a discharge switch connected to the battery cell in series; a precharge switch connected to the charge switch and the discharge switch in parallel; and a battery tray control unit connected to the at least one battery cell in series, wherein the tray control unit performs precharging when a charge voltage is detected and transmits information indicating that precharging is performed to at least one different battery tray connected to the battery tray in parallel, and when all of battery trays have performed precharging, the tray control unit to simultaneously transmit information instructing to start charging to the at least one different battery tray.

10. The battery tray as claimed in claim 9, further comprising: a controller area network (CAN) communication unit to transmit the information indicating that precharging is performed to the at least one different battery tray.

11. The battery tray as claimed in claim 9, wherein the tray control unit is to determine whether the battery tray is a battery tray for transmitting the information instructing to start charging, and, when the battery tray is a battery tray for transmitting information instructing to start charging, the tray control unit is to simultaneously transmit the information instructing to start charging to the at least one different battery tray.

12. The battery tray as claimed in claim 9, wherein when performing precharging, the tray control unit turns off the charge switch and the discharge switch and turns on the precharge switch.


A battery system includes: a plurality of battery banks connected in parallel with each other; and a distribution controller coupled to the battery banks and configured to: receive a command comprising a target charging/discharging amount; determine a priority order between the battery banks based on a state of charge (SOC) and a state of health (SOH) of each of the battery banks; select at least some of the battery banks to be charged or discharged according to the target charging/discharging amount based on the priority order; and perform a charging or discharging on the at least some of the battery banks according to the target charging/discharging amount so that others of the battery banks are paused.

Claims which contain your search:

1. A battery system comprising: a plurality of battery banks connected in parallel with each other; and a distribution controller coupled to the battery banks and configured to:receive a command comprising a target charging/discharging amount;determine a priority order between the battery banks based on a state of charge (SOC) and a state of health (SOH) of each of the battery banks;select at least some of the battery banks to be charged or discharged according to the target charging/discharging amount based on the priority order; andperform a charging or discharging on the at least some of the battery banks according to the target charging/discharging amount so that others of the battery banks are paused.

2. The battery system of claim 1, further comprising a plurality of direct current (DC)/DC converters that are connected respectively to the plurality of battery banks in series, wherein the battery banks are connected in parallel with each other via the plurality of DC/DC converters, and the distribution controller is configured to control the plurality of DC/DC converters so that the at least some of the battery banks are charged or discharged while the others of the battery banks are paused.

3. The battery system of claim 2, wherein the battery banks comprise at least one first battery bank comprising battery cells of a first number, and at least one second battery bank comprising battery cells of a second number that is different from the first number, and the plurality of DC/DC converters comprise at least one first DC/DC converter connected to the at least one first battery bank, and at least one second DC/DC converter connected to the at least one second battery bank.

4. The battery system of claim 1, wherein the battery banks comprise at least one first battery bank comprising battery cells of a first number, and at least one second battery bank comprising battery cells of a second number that is different from the first number, the battery system further comprises at least one DC/DC converter connected to the at least one first battery bank, and at least one switch connected to the at least one second battery bank, and the distribution controller is configured to control the at least one DC/DC converter and the at least one switch so that the at least some battery banks are charged and discharged while the other battery banks are paused.

5. The battery system of claim 1, wherein the plurality of battery banks are connected to an electrical grid via a power converter.

6. The battery system of claim 1, wherein the distribution controller is configured to update the priority order between the plurality of battery banks at every update period.

7. The battery system of claim 6, wherein the distribution controller is configured to set the update period based on temperatures of the plurality of battery banks, and the update period is increased when the temperatures lower.

8. The battery system of claim 1, wherein the distribution controller is configured to update the priority order between the plurality of battery banks whenever a sign of the target charging/discharging amount is inversed.

9. The battery system of claim 1, wherein the distribution controller is configured to: set a charging limitation amount of a first battery bank among the battery banks having an SOC that is greater than a first critical value as 0 from among the battery banks so that the first battery bank is paused when the distribution controller receives a charging command; and set a discharging limitation amount of a second battery bank among the battery banks having an SOC that is less than a second critical value as 0 from among the battery banks so that the second battery bank is paused when the distribution controller receives a discharging command.

10. The battery system of claim 1, wherein the distribution controller is configured to grant a higher priority to a first battery bank having lower SOC and higher SOH from among the battery banks when receiving the charging command, and the distribution controller is configured to grant the higher priority to a second battery bank having higher SOC and higher SOH from among the plurality of battery banks when receiving the discharging command.

11. The battery system of claim 10, wherein the first or second battery bank having higher SOH has a shorter paused time.

12. The battery system of claim 1, wherein the at least some of the battery banks have charging/discharging rates (C-rate) that are equal to each other.

13. The battery system of claim 1, wherein the distribution controller is configured to: compare a total remaining capacity of the plurality of battery banks with a target remaining capacity; generate a corrected target charging/discharging amount by correcting the target charging/discharging amount based on a difference between the total remaining capacity and the target remaining capacity; and the at least some battery banks are charged or discharged according to the corrected target charging/discharging amount.

14. The battery system of claim 13, wherein, in response to the total remaining capacity being greater than the target remaining capacity, the distribution controller is configured to determine the corrected target charging amount to be less than the target charging amount and to determine the corrected target discharging amount to be greater than the target discharging amount, and in response to the total remaining capacity being less than the target remaining capacity, the distribution controller is configured to determine the corrected target charging amount to be greater than the target charging amount and to determine the corrected target discharging amount to be less than the target discharging amount.

15. An energy storage system comprising: a plurality of power converters; a plurality of battery units connected to an electrical grid respectively via the power converters; and a combined controller configured to control the plurality of power converters and the plurality of battery units, wherein each of the plurality of battery units comprises:a plurality of battery banks connected in parallel with each other; anda distribution controller configured to:


Patent
Samsung | Date: 2015-08-27

An energy storage device includes at least one battery pack including a plurality of unit batteries, a pack frame accommodating the plurality of unit batteries, and a rack housing accommodating the at least one battery pack with the pack frame, the rack housing including at least one support member supporting a side wall of the pack frame, wherein the plurality of unit batteries are arranged in an overlapping manner in a first direction, the at least one support member extending in a second direction perpendicular to the first direction and traversing the side wall of the pack frame.

Claims which contain your search:

1. An energy storage device, comprising: at least one battery pack including a plurality of unit batteries; a pack frame accommodating the plurality of unit batteries; and a rack housing accommodating the at least one battery pack with the pack frame, the rack housing including at least one support member supporting a side wall of the pack frame, wherein the plurality of unit batteries are arranged in an overlapping manner in a first direction, the at least one support member extending in a second direction perpendicular to the first direction and traversing the side wall of the pack frame.

2. The energy storage device as claimed in claim 1, wherein: the plurality of unit batteries is arranged in at least one column extending in the first direction, and the at least one support member includes first and second support members respectively coupled to first and second side walls of the pack frame, the first and second side walls being respectively disposed at first and second ends of the column in a length direction.

3. The energy storage device as claimed in claim 1, wherein the at least one support member extends along an outer surface of the side wall of the pack frame.

4. The energy storage device as claimed in claim 3, wherein the at least one support member extends along a line corresponding to a height of a substantially half of a height of the unit battery.

5. The energy storage device as claimed in claim 1, wherein the at least one support member is detachably coupled to the pack frame.

6. The energy storage device as claimed in claim 5, wherein the at least one support member is slidable into the pack frame.

7. The energy storage device as claimed in claim 1, wherein the pack frame includes at least one insertion recess on the side wall, the side wall extending in the second direction, and the support member being inserted into the insertion recess.

8. The energy storage device as claimed in claim 7, wherein the insertion recess extends in the second direction on an outer surface of the side wall.

9. The energy storage device as claimed in claim 7, wherein the insertion recess extends from a first edge of the side wall to a second edge of the side wall, the second edge being opposite to the first edge.

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