公开(公告)号：US20240097209A1

公开(公告)日：2024-03-21

申请号：US18526525

申请日：2023-12-01

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yukun WU ,  Xiaoping ZHANG ,  Xiaoming GE

IPC: H01M10/42 ,  H01M50/46

CPC classification number: H01M10/4235 ,  H01M50/46 ,  H01M10/0525

Abstract: This application provides a battery cell, a battery, an electric apparatus, and a manufacturing method and device of battery cell. The battery cell includes an end cover and a housing, the end cover and the housing forming an accommodating cavity; an electrode assembly accommodated in the accommodating cavity; an insulator configured to isolate the end cover from the electrode assembly; and a protective film fitting around outer circumference of the electrode assembly, the protective film and the insulator being fit together. The protective film and the insulator being fit together does not require hot-melt connection during assembly, thereby avoiding drawing in over-melting, falling off in under-melting, and the like of the protective film caused by hot-melt connection.

公开(公告)号：US20230082055A1

公开(公告)日：2023-03-16

申请号：US17900908

申请日：2022-09-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yukun WU ,  Xiaoming GE

IPC: H01M4/66 ,  C25D3/38

Abstract: This application provides a metal foil. The metal foil may include a first metal layer and a metal base layer that are stacked up. A roughness Rz of a surface that is of the metal base layer and that is oriented toward the first metal layer is α1 μm, a roughness Rz of a surface that is of the first metal layer and that is oriented back from the metal base layer is β1 μm, α1 may be in a range of 1.8 to 2.9, and β1 may be in a range of 1 to 1.4.

公开(公告)号：US20230323556A1

公开(公告)日：2023-10-12

申请号：US18334552

申请日：2023-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yukun WU ,  Xiaoming GE

IPC: C25D5/20 ,  C30B29/02 ,  H01M4/66 ,  C30B30/06 ,  C30B7/12 ,  C25D1/04 ,  H01M4/04 ,  C25D3/38

CPC classification number: C25D5/20 ,  C30B29/02 ,  H01M4/661 ,  C30B30/06 ,  C30B7/12 ,  C25D1/04 ,  H01M4/0452 ,  C25D3/38

Abstract: A method for preparing an electrolytic copper foil includes placing an anode and a cathode to be plated in a twin crystal growth agent containing electroplating solution in an electroplating tank, and, under conditions that the electroplating solution is provided with randomly alternating transitions of one or two of an ultrasonic wave at a frequency f11 and an ultrasonic wave at a frequency f12 and one or two of an ultrasonic wave at a frequency f21 and an ultrasonic wave at a frequency f22, performing direct current electroplating to obtain the electrolytic copper foil, wherein f11>40 kHz, 15 kHz

公开(公告)号：US20240222753A1

公开(公告)日：2024-07-04

申请号：US18608314

申请日：2024-03-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yukun WU ,  Xiaoping ZHANG ,  Wenzhu XU

IPC: H01M50/169 ,  H01M50/103 ,  H01M50/15

CPC classification number: H01M50/169 ,  H01M50/103 ,  H01M50/15

Abstract: A top cap assembly includes a top cap plate, a mounting piece, and a protection film. The top cap plate includes an inner side and an outer side disposed opposite to each other along a thickness direction of the top cap plate, the inner side and the outer side are spaced apart from each other to form a receptacle in between, and the receptacle communicates with an outside space. The mounting piece is disposed protrusively in the receptacle and comprising a fixed end and a free end disposed opposite to each other. The fixed end is disposed on a wall of the receptacle, and the free end extends along the thickness direction of the top cap plate and is spaced apart from the wall of the receptacle to form a threading clearance. One end of the protection film is attached to the mounting piece through the threading clearance.