US 12,334,591 B2
Battery module, battery pack, and device using secondary battery
Yongguang Wang, Fujian (CN); Xingdi Chen, Fujian (CN); Peng Wang, Fujian (CN); Yu Tang, Fujian (CN); Jinqing Ji, Fujian (CN); and Zhanyu Sun, Fujian (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on May 3, 2022, as Appl. No. 17/735,511.
Application 17/735,511 is a continuation of application No. PCT/CN2020/141800, filed on Dec. 30, 2020.
Claims priority of application No. 202010259301.1 (CN), filed on Apr. 3, 2020.
Prior Publication US 2022/0263201 A1, Aug. 18, 2022
Int. Cl. H01M 50/503 (2021.01)
CPC H01M 50/503 (2021.01) [H01M 2220/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a battery cell assembly, comprising at least two battery cells arranged along a third direction, wherein each of the battery cells comprises electrode terminals; and
a first busbar, comprising a main portion and two connecting portions, wherein an extension direction of the first busbar tilts against the third direction at a preset angle, the two connecting portions are connected to the electrode terminals of the two battery cells in an identical cell assembly respectively, the main portion is connected between the two connecting portions, a deformation inducing portion is disposed on the main portion, and the deformation inducing portion is configured to reduce at least a force required for deforming the main portion along a first direction, and the first direction is parallel to a lateral surface of the battery cell and perpendicular to the third direction, wherein the lateral surface is a surface on which the electrode terminals are disposed;
wherein the deformation inducing portion comprises a gap, and the gap runs through along a thickness direction of the main portion, the gap comprises two transverse grooves, and the two transverse grooves extend along a width direction of the first busbar and are spaced apart along a length direction of the first busbar;
wherein the gap further comprises a longitudinal groove, the longitudinal groove extends along the length direction of the first busbar, and the longitudinal groove communicate with the two transverse grooves.