Title: Method for compensating state of charge of battery and battery management system using the same
Application Number: 200610168004 Application Date: 2006.12.15
Publication Number: 1988314 Publication Date: 2007.06.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02J7/00;H01M10/44
Applicant(s) Name: Samsung SDI Co., Ltd. Address:
Inventor(s) Name: Seo Se-wook;Yun Han-seok;Lim Gye-jong
Attorney & Agent: luyi zhude he
Abstract:
    The present invention relates to a state of charge (SOC) compensation method for a vehicle using electrical energy, and a battery management system using the SOC compensation method. To determine the SOC of the battery, charge and discharge current of the battery is used to calculate a first SOC of the battery and a first corresponding voltage, a rheobasic voltage is calculated, an integration error corresponding to a difference between the first voltage and the rheobasic voltage is calculated, a SOC compensation factor is added to the first SOC when the integration error is greater than a first threshold value, and a SOC compensation factor is subtracted from the first SOC when the integration error is less than a second threshold value.
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