US 11,955,608 B2
Lithium precipitation detection method for battery pack, computer-readable storage medium, and power consuming apparatus
Lan Xie, Fujian (CN); Zhen Lin, Fujian (CN); Guangyu Xu, Fujian (CN); and Shuai Song, Fujian (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Fujian (CN)
Filed on Oct. 12, 2023, as Appl. No. 18/379,222.
Application 18/379,222 is a continuation of application No. PCT/CN2021/130685, filed on Nov. 15, 2021.
Prior Publication US 2024/0039063 A1, Feb. 1, 2024
Int. Cl. H01M 10/42 (2006.01); G01R 31/3835 (2019.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01)
CPC H01M 10/4285 (2013.01) [G01R 31/3835 (2019.01); H01M 10/425 (2013.01); H01M 10/441 (2013.01); H01M 10/482 (2013.01); H02J 7/0068 (2013.01); H01M 2010/4271 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A lithium precipitation detection method for a battery pack, wherein the battery pack comprises a battery management module, and the lithium precipitation detection method comprises:
sending, when the battery management module determines that a change in a charging voltage of the battery pack meets a predetermined condition, a charging request containing a first current to a charging pile for charging, and controlling the battery pack to be charged with the first current for a first predetermined duration and a second predetermined duration, wherein the first predetermined duration is equal to the second predetermined duration;
obtaining, by the battery management module, a first voltage change amount within the first predetermined duration and a second voltage change amount within the second predetermined duration; and
determining, when the battery management module determines that a difference between the second voltage change amount and the first voltage change amount is greater than a predetermined voltage threshold, that lithium precipitation occurs in the battery pack.