Battery pack capable of preventing battery cell from high-temperature swelling and method thereof
AssigneeSamsung SDI Co., Ltd.
InventorsYoungu Kim, Woojin Lee, Yonggeol Kwon, Kisung Hong
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Abstract
A method for protecting a battery cell from high-temperature swelling, the method includes: sensing a temperature and a voltage of the battery cell; determining whether the sensed temperature of the battery cell exceeds a reference temperature; determining whether the sensed voltage of the battery cell exceeds a reference voltage, when the sensed temperature of the battery cell exceeds the reference temperature; and self-discharging the battery cell in a charge/discharge/standby mode when the sensed voltage of the battery cell exceeds the reference voltage.
Claims18
A method for protecting a battery cell from high-temperature swelling, the method comprising:
- sensing a temperature and a voltage of the battery cell;
- calculating a remaining capacity of the battery cell;
- determining whether the sensed temperature of the battery cell exceeds a reference temperature;
- determining whether the sensed voltage of the battery cell exceeds a reference voltage in response to the sensed temperature of the battery cell exceeding the reference temperature;
- determining whether the calculated remaining capacity of the battery cell exceeds a reference capacity in response to the sensed temperature of the battery cell exceeding the reference temperature, and in response to the sensed voltage of the battery cell exceeding the reference voltage;
- and
- self-discharging the battery cell in a charge/discharge/standby mode when the calculated remaining capacity of the battery cell exceeds the reference capacity.
A battery pack for protecting a battery cell from high-temperature swelling, the battery pack comprising:
- a battery cell;
- a temperature sensor for sensing a temperature of the battery cell;
- a self-discharge unit coupled electrically to the battery cell and configured to self-discharge the battery cell;
- and
- a control unit for controlling the self-discharge unit in a charge/discharge/standby mode, wherein the control unit is configured to enable the self-discharge unit to self-discharge the battery cell in the charge/discharge/standby mode when a determined remaining capacity of the battery cell exceeds a reference capacity in response to a sensed temperature of the battery cell exceeding a reference temperature, and in response to a sensed voltage of the battery cell exceeding a reference voltage.
Dependencies are inferred from the claim text.