Title:
ONLINE DETECTION METHOD FOR BATTERY INTERNAL SHORT-CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/107766
Kind Code:
A1
Abstract:
An online detection method for a power battery internal short-circuit comprises the following steps: in a charging/discharging process, when a state-of-charge value of a power battery is greater than a preset first threshold, monitoring and storing voltage values of respective cells in the power battery; determining, according to the monitored and stored historical voltage values of the respective cells, whether there is a cell having a voltage value less than a second threshold in a charging process and a voltage value less than a third threshold in a discharging process, and if so, marking said cell as a cell with an internal short-circuit. The detection method can accurately determine occurrence of an internal short-circuit fault in a power battery when a vehicle is driving, thereby protecting the vehicle and ensuring safety of people in the vehicle.
Inventors:
YUAN SHENGJIE (CN)
LIU RAY (CN)
HE CASSIE (CN)
LIU RAY (CN)
HE CASSIE (CN)
Application Number:
PCT/CN2017/095094
Publication Date:
June 21, 2018
Filing Date:
July 31, 2017
Export Citation:
Assignee:
NEXTEV LTD (CN)
International Classes:
G01R31/36; H01M50/204
Foreign References:
| CN103545564A | 2014-01-29 | |||
| CN103163464A | 2013-06-19 | |||
| CN102104180A | 2011-06-22 | |||
| JP2014002009A | 2014-01-09 | |||
| CN1174441A | 1998-02-25 | |||
| US20110298417A1 | 2011-12-08 | |||
| CN102565611A | 2012-07-11 |
Other References:
See also references of EP 3557269A4
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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