US 11,870,289 B2
Method for charging traction battery and battery management system
Shan Huang, Ningde (CN); Shichao Li, Ningde (CN); Haili Li, Ningde (CN); Wei Zhao, Ningde (CN); and Zhen Lin, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Jun. 1, 2023, as Appl. No. 18/327,702.
Application 18/327,702 is a continuation of application No. PCT/CN2021/117314, filed on Sep. 8, 2021.
Prior Publication US 2023/0307934 A1, Sep. 28, 2023
Int. Cl. H02J 7/00 (2006.01); H01M 10/44 (2006.01); B60L 58/13 (2019.01); H01M 10/42 (2006.01)
CPC H02J 7/0048 (2020.01) [B60L 58/13 (2019.02); H01M 10/425 (2013.01); H01M 10/44 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for charging a traction battery, which is applied to a battery management system (BMS) for the traction battery, the method comprising:
obtaining a battery parameter of the traction battery, the battery parameter comprising at least one of a state of charge (SOC) or an open-circuit voltage (OCV); and
during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged in response to the battery parameter of the traction battery changing by a parameter gap value;
wherein the parameter gap value is a first preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a first parameter interval, and is a second preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a second parameter interval, wherein the first preset parameter gap value is greater than the second preset parameter gap value, and the battery parameter in the first parameter interval is less than the battery parameter in the second parameter interval.