公开(公告)号：US20190283172A1

公开(公告)日：2019-09-19

申请号：US16285422

申请日：2019-02-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Congmiao WU ,  Jinwei LIN ,  Long ZHOU ,  Xichong ZHANG ,  Keqiang LI ,  Zuyu WU

IPC: B23K20/10 ,  H01M4/66

Abstract: The present disclosure relates to a processing apparatus for a secondary battery current collector. The processing apparatus includes: a foil uncoiling roller; a composite current collector uncoiling roller; a welding device; a plurality of driving rollers; and a coiling roller. Both the foil uncoiling roller and the composite current collector uncoiling roller are disposed on a feeding side of the welding device. The welding device is configured to weld foil to a portion of a composite current collector. The plurality of driving rollers is respectively disposed on a feeding side and a discharging side of the welding device, and has an equal line speed. The plurality of driving rollers is configured to drive the overlapped foil and the composite current collector to downstream. The coiling roller is configured to wind up the composite current collector having the foil welded thereon.

公开(公告)号：US20190283171A1

公开(公告)日：2019-09-19

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

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.

公开(公告)号：US20200091520A1

公开(公告)日：2020-03-19

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.