CPC G01R 31/392 (2019.01) [H01M 10/0562 (2013.01); H01M 10/425 (2013.01); H01M 2010/4271 (2013.01)] | 11 Claims |
1. A method of estimating a state of health (SOH) of an all-solid-state battery, comprising:
detecting whether hydrogen sulfide is generated in each cell of the all-solid-state battery; estimating the state of health of the all-solid-state battery corresponding to an amount or an increase rate of generated hydrogen sulfide based on data prepared in advance;
collecting current-voltage data when the all-solid-state battery is being charged, and collecting capacity data when the all-solid-state battery is fully charged;
estimating the state of health of the all-solid-state battery by comparing the current-voltage data and the capacity data when the all-solid-state battery is fully charged with data sets prepared in advance; and
identifying a plurality of deterioration factors of the battery by comparing a first state of health estimated based on the amount of generated hydrogen sulfide with a second state of health estimated based on the current-voltage data and the capacity data when the all-solid-state battery is fully charged.
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