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1. (WO2017016385) ESTIMATION METHOD AND APPARATUS FOR STATE-OF-CHARGE VALUE OF BATTERY

Pub. No.:    WO/2017/016385    International Application No.:    PCT/CN2016/089688
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Tue Jul 12 01:59:59 CEST 2016
IPC: G01R 31/36
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
Inventors: YE, Yanhong
叶彦宏
Title: ESTIMATION METHOD AND APPARATUS FOR STATE-OF-CHARGE VALUE OF BATTERY
Abstract:
An estimation method for a state-of-charge (SOC) value of a battery comprises: detecting whether a battery is in a charge state or a discharge state; when the battery is in the charge state or the discharge state, determining an SOC value of the battery by means of an ampere-hour integral method; and when the battery is not in the charge state or the discharge state, and a charging loop or discharging loop of the battery is turned off, determining the SOC value according to a corresponding relation between a battery open-circuit voltage and SOC value of the battery. The method resolves the problem of low SOC estimation accuracy of a battery SOC estimation method in the related art, and improves the SOC estimation accuracy.