A state of charge (SOC) determination method and apparatus for a battery system are disclosed. Based on a correspondence between impedance and SOC, a correspondence between OCV and SOC, and an operating current at a previous data collection moment, a correction coefficient at a current data collection moment can be determined(S101). After the SOC estimated at the current data collection moment is corrected based on the correction coefficient(S102-S103), the accumulation of errors in the SOC can be eliminated, and the accuracy of the determined SOC is thereby improved.
STATE OF CHARGE DETERMINATION METHOD AND APPARATUS FOR BATTERY SYSTEM
VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DES LADEZUSTANDES EINES BATTERIESYSTEMS
PROCÉDÉ ET APPAREIL DE DÉTERMINATION D'ÉTAT DE CHARGE POUR SYSTÈME DE BATTERIE
2024-03-06
Patent
Electronic Resource
English
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