State College, PA, United States
State College, PA, United States
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Rechargeable batteries, charging methods and systems for fast charging of the battery under all environmental temperatures and without causing battery degradation are disclosed. A system includes a temperature sensor configured to monitor a temperature of a battery, a switch that can electrically engage the battery to a source of electrical current through either a low-resistance terminal or a high-resistance terminal of the battery, and a controller electrically connected to the temperature sensor and the switch. The controller can receive input from the temperature sensor and is programmed to determine whether to electrically engage the battery to the source of electrical current through either the low-resistance terminal or the high-resistance terminal through the switch based on input from the temperature sensor.


Patent
EC Power | Date: 2017-07-26

Electrochemical cells that include resistor switch assemblies that can operate according to temperature and batteries and power systems including such cells are disclosed. A temperature controlled switch is electrically connected to the cell and is electrically connected in parallel to a resistor. The switch can direct current through the resistor (High Resistance State) or can direct current to bypass the resistor (Low Resistance State).


Patent
EC Power | Date: 2016-10-07

A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.


Patent
EC Power | Date: 2017-10-11

Provided is an all solid-state lithium battery including solid battery materials and whose ohmic resistance is modulated according to temperature. The all solid-state lithium battery can include a solid electrolyte; at least two terminals for operating the battery at one level of internal resistance (R1) over a temperature range of the battery between a first temperature (T1) and a second temperature (T2); at least one high resistance terminal for operating the battery at a second level of internal resistance (R2) outside of either T1 or T2; and a switch that activates R2 when the temperature of the battery is outside of either T1 or T2. The battery can be configured to include at least one resistor sheet embedded within a cell of the battery and electrically connected to the at least one high resistance terminal.


Patent
EC Power | Date: 2016-01-21

Fuel cell systems, e.g. systems including proton exchange membrane (PEM) fuel cells, are engineered to have more than one internal electrical resistance that can change according to temperature. Such changes in internal electrical resistance levels allow rapid heat-up of the fuel cells from low temperatures to an elevated temperature that is optimal for water management and fuel cell operation. The fuel cell systems can include at least one fuel cell and at least one resistor-switch unit electrically connected to the at least one fuel cell. The at least one resistor-switch unit includes a resistor and a switch in which the switch is electrically connected in parallel with the resistor.


Patent
EC Power | Date: 2016-01-13

A water heating apparatus for supply of heated water to an installation comprises a combined heat and power (CHP) unit, a heat storage means, and a secondary heating device. The CHP unit and the secondary heating device are arranged to operate in a first mode where the CHP unit provides heat to the heat storage means and the secondary heating device provides all the heated water required to meet the heat demand of the installation; and to operate in a second mode where the secondary heating device is inactive, and the heated water to meet the heat demand is provided by the CHP unit and/or from the heat storage means.


Rechargeable batteries, charging methods and systems for fast charging of the battery under all environmental temperatures and without causing battery degradation are disclosed.


Patent
EC Power | Date: 2014-07-30

Electrochemical cells that include resistor switch assemblies that can operate according to temperature and batteries and power systems including such cells are disclosed.


Patent
EC Power | Date: 2015-11-25

Provided is an all solid-state lithium battery including solid battery materials and whose ohmic resistance is modulated according to temperature. The all solid-state lithium battery can include a solid electrolyte; at least two terminals for operating the battery at one level of internal resistance (R1) over a temperature range of the battery between a first temperature (T1) and a second temperature (T2); at least one high resistance terminal for operating the battery at a second level of internal resistance (R2) outside of either T1 or T2; and a switch that activates R2 when the temperature of the battery is outside of either T1 or T2. The battery can be configured to include at least one resistor sheet embedded within a cell of the battery and electrically connected to the at least one high resistance terminal.


A temperature sensor apparatus for a water storage apparatus in which an amount of hot water stored can be determined by the vertical position of a hot/cold water boundary, the apparatus comprising: a plurality of temperature sensors for installation at different height levels in the water storage apparatus, and a control unit, wherein the control unit is arranged to determine sensor location, in use, based on the order in which the sensors detect a temperature change during operation of the water storage apparatus.

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