US 12,249,723 B2
Battery, electric device, and method and device for preparing battery cell
Xinxiang Chen, Ningde (CN); Denghua Lin, Ningde (CN); Yulian Zheng, Ningde (CN); Peng Wang, Ningde (CN); and Haizu Jin, Ningde (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 Sep. 20, 2023, as Appl. No. 18/470,442.
Application 18/470,442 is a continuation of application No. PCT/CN2021/125917, filed on Oct. 22, 2021.
Prior Publication US 2024/0006687 A1, Jan. 4, 2024
Int. Cl. H01M 50/103 (2021.01); H01M 50/503 (2021.01); H01M 50/507 (2021.01); H01M 50/516 (2021.01)
CPC H01M 50/103 (2021.01) [H01M 50/503 (2021.01); H01M 50/507 (2021.01); H01M 50/516 (2021.01); H01M 2220/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A battery, characterized by comprising:
a plurality of battery cells, wherein the plurality of battery cells are arranged in a first direction, a first region on an edge of a first surface of each of the plurality of battery cells is recessed to form a first recess, a first electrode terminal of each of the battery cells is protrusively provided on a second surface of the battery cell, the first surface and the second surface are perpendicular to the first direction, and the plurality of battery cells comprise a first battery cell and a second battery cell that are adjacent, wherein the first region is arranged in an area on the first surface opposite to first electrode terminal;
a first busbar, configured to connect a first electrode terminal of the first battery cell and a first electrode terminal of the second battery cell, wherein the first busbar comprises a first end, a second end, and a bending portion disposed between the first end and the second end, the bending portion is configured as bendable to allow the first busbar to bypass a side wall of the second battery cell parallel to the first direction, the first end of the first busbar is connected to the first electrode terminal of the first battery cell and the second end of the first busbar is connected to the first electrode terminal of the second battery cell, the first end of the first busbar and the first electrode terminal of the first battery cell are both accommodated in the first recess of the second battery cell;
wherein each one the plurality of battery cells comprises a housing and an end cover, wherein the housing is configured to accommodate an electrode assembly of the battery cell, the end cover closes the housing to enclose the electrode assembly in the housing, a bottom wall of the housing forms the first surface of the battery cell, the end cover forms the second surface of the battery cell, a region of the end cover corresponding to the electrode assembly is raised in a direction back away from the housing, so as to form a depression in a side of the end cover facing the housing, a welding track is formed between the edge of the housing and the edge of the end cover, a contour line is formed between the raised region of the end cover and the depression, and a distance between the contour line and the welding track is greater than 0.5 mm.