Apparatus and Method for Diagnosing Battery
AssigneeLG Energy Solution, Ltd.
InventorsGi-Min Nam, Tae-Hyun Hwang, Hyeong-Seok Kim
Life of this patent
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Abstract
An apparatus for diagnosing a battery includes a measuring unit configured to measure voltage and current of a battery; and a control unit configured to calculate a target discharge capacity until the voltage of the battery reaches a target voltage, calculate a full discharge capacity of the battery, calculate a capacity difference between the full discharge capacity and the target discharge capacity, calculate a capacity difference change rate based on the calculated capacity difference and a preset capacity difference profile, and diagnose a state of the battery based on the calculated capacity difference change rate and a preset criterion change rate.
Claims10
An apparatus for diagnosing a battery, comprising:
- a control unit configured to:
- calculate a target discharge capacity until voltage of the battery reaches a target voltage,
- calculate a full discharge capacity of the battery,
- calculate a capacity difference between the full discharge capacity and the target discharge capacity,
- calculate a capacity difference change rate based on the calculated capacity difference and a preset capacity difference profile, and
- diagnose a state of the battery based on the calculated capacity difference change rate and a preset criterion change rate.
A method for diagnosing a battery, comprising:
- calculating a target discharge capacity until a voltage of a battery reaches a target voltage and calculating a full discharge capacity of the battery;
- calculating a capacity difference between the full discharge capacity and the target discharge capacity;
- a calculating a capacity difference change rate based on the calculated capacity difference and a preset capacity difference profile;
- and
- diagnosing a state of the battery based on the calculated capacity difference change rate and a preset criterion change rate.
Dependencies are inferred from the claim text.