Vitzrocell Co.

South Korea

Vitzrocell Co.

South Korea
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Patent
Vitzrocell Co. | Date: 2017-01-04

Disclosed is a lithium primary battery using a composite electrolyte, wherein, in order to maximize advantages of a lithium thionyl battery and a lithium sulfonyl battery, electrolytes of the two batteries are mixed to proceed two-stage discharging, thereby making it possible to check the battery usage.


Patent
Vitzrocell Co. | Date: 2014-07-28

The protective circuit includes a voltage dividing circuit connected in parallel between a first electrode and a second electrode of the unit cell and including a first voltage dividing resistor and a second voltage dividing resistor; a first switching device connected to a junction between the first voltage dividing resistor and the second voltage dividing resistor; a second switching device connected between the junction and the third switching device; and a fourth switching device connected between the junction and the third switching device, wherein, when output voltage of the unit cell becomes equal to or lower than a first reference voltage, the fourth switching device and the first switching device are sequentially turned off, the second switching device is turned on, and the third switching device is turned off, so that voltage output through the first output terminal can be cut off.


Patent
Vitzrocell Co. | Date: 2014-05-14

Disclosed herein is a lithium battery which exhibits minimal dimensional deformation of a case thereof and easily discharges gas therefrom. The lithium battery includes an electrode assembly in which cathode and anode plates face each other with a separator therebetween; a case body receiving the electrode assembly and an electrolyte, the case body including a barrel-shaped sidewall open at a top thereof and a bottom bulging in a direction away from the electrode assembly; and a top cap disposed on the top of the case body and provided with a safety exhaust outlet through which gas is discharged upon increase in internal pressure.


Patent
Vitzrocell Co. | Date: 2015-01-15

Disclosed is a lithium primary battery using a composite electrolyte, wherein, in order to maximize advantages of a lithium thionyl battery and a lithium sulfonyl battery, electrolytes of the two batteries are mixed to proceed two-stage discharging, thereby making it possible to check the battery usage.


Patent
Vitzrocell Co. | Date: 2013-07-17

Disclosed herein is a lithium battery which exhibits minimal dimensional deformation of a case thereof and easily discharges gas therefrom. The lithium battery includes an electrode assembly in which cathode and anode plates face each other with a separator therebetween; a case body receiving the electrode assembly and an electrolyte, the case body including a barrel-shaped sidewall open at a top thereof and a bottom bulging in a direction away from the electrode assembly; and a top cap disposed on the top of the case body and provided with a safety exhaust outlet through which gas is discharged upon increase in internal pressure.


Disclosed are a mesh plate type nickel secondary battery unit cell and a nickel secondary battery stack including the same. The mesh plate type nickel secondary battery unit cell can secure a uniform gap between cathode and anode plates by withstanding expansion of a central portion of the cathode plate due to swelling caused by charge/discharge through a mesh plate structure of the cathode and anode plates and can prevent short circuit. The nickel secondary battery unit cell includes a cathode plate having a mesh plate structure; an anode plate having a mesh plate structure and separated from the cathode plate to face the cathode plate; and a separator interposed in a space between the cathode and anode plates.


The present disclosure provides a cathode for lithium batteries with a structure suited to high output properties, a method of manufacturing the same, and a lithium battery using the same. The cathode has a stack structure including a first cathode member, a separating member and a second cathode member stacked in sequence to have a pipe shape or a folded shape with spaced ends, wherein each of the first and second cathode members includes a current collector and a cathode active material formed on either side of the current collector.


Disclosed is a battery assembly with a PCB substrate, comprising a bus bar stepped and end processed for enhanced assembly performance and electrical bonding reliability, and a PCB substrate having an assembling groove with an end of the bus bar and an insulating film for an improved stability.


Patent
Vitzrocell Co. | Date: 2016-01-27

Disclosed is a protective circuit of a unit cell. The protective circuit includes a voltage dividing circuit connected in parallel between a first electrode and a second electrode of the unit cell and including a first voltage dividing resistor and a second voltage dividing resistor; a first switching device connected to a junction between the first voltage dividing resistor and the second voltage dividing resistor; a second switching device connected between the junction and the third switching device; and a fourth switching device connected between the junction and the third switching device, wherein, when output voltage of the unit cell becomes equal to or lower than a first reference voltage, the fourth switching device and the first switching device are sequentially turned off, the second switching device is turned on, and the third switching device is turned off, so that voltage output through the first output terminal can be cut off. Thus, it is advantageously possible to drastically reduce time taken until over-discharge cut-off is completely achieved after cut-off is started for the unit cell.


The present disclosure provides a cathode for lithium batteries with a structure suited to high output properties, a method of manufacturing the same, and a lithium battery using the same. The cathode has a stack structure including a first cathode member, a separating member and a second cathode member stacked in sequence to have a pipe shape or a folded shape with spaced ends, wherein each of the first and second cathode members includes a current collector and a cathode active material formed on either side of the current collector.

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