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US 12,000,901 B2Granted
Battery state estimation based on multiple rates of hysteresis transit
AssigneeGM Global Technology Operations LLC
InventorsCharles W. Wampler, II, Thanh-Son Dao
Life of this patent
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Abstract
A system for an electric vehicle includes a hysteresis module configured to calculate a plurality of hysteresis state components of a battery based on a measured current and a respective hysteresis transit rate, calculate an overall hysteresis state of the battery based on the plurality of hysteresis state components, and calculate a hysteresis voltage of the battery based on the overall hysteresis state, and a state of charge (SOC) module configured to calculate an SOC of the battery based in part on the hysteresis voltage.
Claims11
A vehicle, comprising a system the system comprising:
- a hysteresis module configured to:
- calculate a plurality of hysteresis state components of a battery of the vehicle based on a measured current, wherein the hysteresis module calculates each of the plurality of hysteresis state components based on a respective hysteresis transit rate,
- calculate an overall hysteresis state of the battery based on the plurality of hysteresis state components, and
- calculate a hysteresis voltage of the battery based on the overall hysteresis state;
- and
- a state of charge (SOC) module configured to calculate an SOC of the battery based in part on the hysteresis voltage.
3 more elements
Dependencies are inferred from the claim text.