公开(公告)号：US10826072B2

公开(公告)日：2020-11-03

申请号：US16370974

申请日：2019-03-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jinwei Lin ,  Zuyu Wu ,  Keqiang Li ,  Congmiao Wu ,  Taosheng Zhu

IPC: H01M4/66 ,  H01M10/0525

Abstract: The present application discloses a current collector, an electrode plate, and an electrochemical device. The current collector comprises: a support layer comprising opposite two surfaces along the thickness direction thereof; a conductive layer disposed on at least one of the two surfaces of the support layer; wherein the support layer comprises a support material selected from one or more of a polymer material and a polymer matrix composite material, and wherein the light transmittance T of the support layer is 0≤T≤98%. The current collector, electrode plate and electrochemical device provided by the present application have good processability.

公开(公告)号：US11135673B2

公开(公告)日：2021-10-05

申请号：US16282898

申请日：2019-02-22

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Congmiao Wu ,  Zhiqiang Guo ,  Zuyu Wu ,  Jianfeng Li ,  Guodong Li ,  Taosheng Zhu

IPC: B23K20/10 ,  H01M4/66 ,  H01M4/64 ,  B23K101/38

Abstract: The present disclosure relates to a welding device and a processing apparatus for a secondary battery current collector. The welding device includes: a welding head; and an anvil block. A welding station is disposed between the welding head and the anvil block. The welding device is configured to weld a foil to a portion of a composite current collector at the welding station. According to this solution, the foil can be used as a tab of the composite current collector by using the foil to connect with the composite current collector so as to output the current in the battery cell.