CPC H01M 10/486 (2013.01) [H01M 10/425 (2013.01); H01M 10/443 (2013.01); H01M 2010/4271 (2013.01)] | 13 Claims |
1. A battery diagnosing apparatus, comprising:
a voltage sensor configured to measure a voltage of a battery;
a temperature sensor configured to measure a temperature of the battery;
a controller; and
memory having programmed thereon instructions that, when executed by the controller, cause the controller to:
calculate a capacity change rate by comparing the discharge capacity of the battery with a reference capacity;
calculate a resistance change rate by comparing an ohmic resistance determined based on an impedance profile generated for the battery with a reference resistance;
determine an internal gas generation level of the battery by comparing magnitudes of the calculated resistance change rate and a threshold resistance change rate; and
determine an internal gas generation cause of the battery by comparing magnitudes of the calculated capacity change rate and a threshold capacity change rate.
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