Patent ID: 11929472
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC H

Claim 0:
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.