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1. (WO2018161935) METHOD AND DEVICE FOR ESTIMATING SERVICE CAPACITY AND STATE OF HEALTH OF CELL AND BATTERY SYSTEM

Pub. No.:    WO/2018/161935    International Application No.:    PCT/CN2018/078409
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Fri Mar 09 00:59:59 CET 2018
IPC: G01R 31/36
Applicants: ZHENGZHOU YUTONG BUS CO., LTD.
郑州宇通客车股份有限公司
Inventors: ZHU, Guanghai
朱光海
YOU, Xianglong
游祥龙
ZHANG, Hongtao
张红涛
ZHOU, Xuesong
周雪松
LI, Xiaofei
李晓菲
Title: METHOD AND DEVICE FOR ESTIMATING SERVICE CAPACITY AND STATE OF HEALTH OF CELL AND BATTERY SYSTEM
Abstract:
Provided are a method and device for estimating a service capacity and a state of health of a cell and a battery system. The method for estimating a state of health comprises: when a battery system is being charged, determining an initial state of charge of a cell in the battery system being charged; after the battery system has been fully charged, determining a state of charge of the cell at the end of charging, and performing computation to obtain a charging capacity of the cell; and performing computation to obtain a service capacity of the cell, a service capacity of the battery system and a state of health of the battery system. The method can effectively solve a problem of inaccurate estimation of a service capacity of a cell of a vehicle battery, a service capacity of a battery system and a state of health of the battery system.