US 11,949,128 B2
Current collecting member, secondary battery and fabrication method
Hu Xu, Ningde (CN); Miaomiao Ren, Ningde (CN); Yuanbao Chen, Ningde (CN); Long Xu, Ningde (CN); Donglai Zheng, Ningde (CN); Lingbo Zhu, Ningde (CN); and Yongshou Lin, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on May 11, 2021, as Appl. No. 17/317,854.
Application 17/317,854 is a continuation of application No. PCT/CN2019/119736, filed on Nov. 20, 2019.
Claims priority of application No. 201821940481.4 (CN), filed on Nov. 22, 2018.
Prior Publication US 2021/0265709 A1, Aug. 26, 2021
Int. Cl. H01M 50/54 (2021.01); H01M 50/50 (2021.01); H01M 50/564 (2021.01)
CPC H01M 50/54 (2021.01) [H01M 50/50 (2021.01); H01M 50/564 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A current collecting member of a secondary battery, wherein the current collecting member is configured to connect a first tab of an electrode assembly of the secondary battery to a first electrode terminal of a top cover assembly of the secondary battery, wherein the electrode assembly comprises a main body portion;
the current collecting member comprises a substrate and two support plates, wherein the substrate is arranged on an end surface of the main body portion, the two support plates are respectively connected to two ends of the substrate and located on a side of the substrate facing away from the main body portion, and the two support plates extend in the direction approaching each other and are parallel with the substrate;
a gap is disposed between the two support plates;
the substrate is provided with a channel, wherein the channel is configured to place an end surface of the main body portion in communication with space on a side of the substrate facing away from the main body portion, the channel comprises a plurality of through holes through the substrate and overlapping the gap in the thickness direction of the substrate, the plurality of through holes are configured to allow gas generated inside the electrode assembly to discharge through the plurality of through holes; and
the channel includes a groove disposed in an inner surface of the substrate close to the end surface of the main body portion, wherein the groove extends to an edge of the substrate.