Title:
METHOD AND DEVICE FOR ESTIMATING SERVICE CAPACITY AND STATE OF HEALTH OF CELL AND BATTERY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/161935
Kind Code:
A1
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.
Inventors:
ZHU GUANGHAI (CN)
YOU XIANGLONG (CN)
ZHANG HONGTAO (CN)
ZHOU XUESONG (CN)
LI XIAOFEI (CN)
YOU XIANGLONG (CN)
ZHANG HONGTAO (CN)
ZHOU XUESONG (CN)
LI XIAOFEI (CN)
Application Number:
PCT/CN2018/078409
Publication Date:
September 13, 2018
Filing Date:
March 08, 2018
Export Citation:
Assignee:
ZHENGZHOU YUTONG BUS CO LTD (CN)
International Classes:
G01R31/36
Foreign References:
| CN101706556A | 2010-05-12 | |||
| CN103399277A | 2013-11-20 | |||
| CN103513187A | 2014-01-15 | |||
| US20160349329A1 | 2016-12-01 |
Other References:
See also references of EP 3594705A4
Attorney, Agent or Firm:
ZHENGZHOU RUIXIN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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