公开(公告)号：US20220246993A1

公开(公告)日：2022-08-04

申请号：US17717736

申请日：2022-04-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu JIN ,  Hu XU ,  Xinxin DU ,  Xing LI ,  Chengdu LIANG ,  Yuqun ZENG

IPC: H01M10/0587

Abstract: Embodiments of the present application provide an electrode assembly, a battery cell, a battery, and a method and a device for manufacturing an electrode assembly. The electrode assembly includes a first electrode plate and a second electrode plate. The first electrode plate and the second electrode plate are wound along a winding direction to form a winding structure, and the winding structure includes a bending region. The first electrode plate includes a first segment that exceeds a winding starting end of the second electrode plate, and at least a part of the first segment is configured to provide a support force to a part of the first electrode plate and the second electrode plate in the bending region and located at an outer side the first segment, making a structure of the first electrode plate and the second electrode plate more compact in the bending region.

公开(公告)号：US20220140345A1

公开(公告)日：2022-05-05

申请号：US17577823

申请日：2022-01-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xing LI ,  Yaohui WANG ,  Haizu JIN

IPC: H01M4/58

Abstract: This application provides a positive electrode plate includes a positive electrode current collector, a first positive electrode membrane, and a second positive electrode membrane. The first positive electrode membrane includes a first positive electrode active material selected from one or more of phosphate materials LiFe1-x-yMnxMyPO4, where 0≤x≤1, 0≤y≤0.1, 0≤x+y≤1, M is selected from one or more of Cr, Mg, Ti, Al, Zn, W, Nb, or Zr. The second positive electrode membrane is arranged on the first positive electrode membrane and includes a second positive electrode active material, gram capacity of the second positive electrode active material is greater than gram capacity of the first positive electrode active material, the second positive electrode active material is different from the first positive electrode active material. Thickness D0 of the positive electrode current collector is less than or equal to thickness D1 of the first positive electrode membrane.

公开(公告)号：US20190140328A1

公开(公告)日：2019-05-09

申请号：US16138451

申请日：2018-09-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhenhua LI ,  Haizu JIN ,  Xing LI

IPC: H01M10/637 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01G11/28 ,  H01G11/48 ,  H01G11/32 ,  H01G11/46

Abstract: This application relates to an electrode plate, an electrochemical device and a safety coating. The electrode plate comprises a current collector, an electrode active material layer and a safety coating disposed between the current collector and the electrode active material layer. The safety coating layer comprises fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The electrode plate can quickly cut off the circuit when the electrochemical device (for example, a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, and thus it may improve the high temperature safety performance of the electrochemical device.

公开(公告)号：US20240222759A1

公开(公告)日：2024-07-04

申请号：US18602845

申请日：2024-03-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Haizu JIN ,  Xing LI ,  Shaojun NIU

IPC: H01M50/209 ,  H01M10/04 ,  H01M50/103 ,  H01M50/548

CPC classification number: H01M50/209 ,  H01M10/0431 ,  H01M50/103 ,  H01M50/548

Abstract: A battery cell includes a first electrode assembly and a second electrode assembly, where the first electrode assembly and the second electrode assembly differ in size and/or capacity so as to fit a structure of the battery cell.

公开(公告)号：US20230335743A1

公开(公告)日：2023-10-19

申请号：US18333255

申请日：2023-06-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhenhua LI ,  Xinzhan WU ,  Qiang GUO ,  Xiayi WU ,  Hanli FU ,  Ziyu YANG ,  Xing LI ,  Shaojun NIU ,  Haizu JIN

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/04

CPC classification number: H01M4/624 ,  H01M10/0525 ,  H01M4/0404 ,  H01M2004/028

Abstract: A positive electrode composite material for a lithium ion secondary battery includes a positive electrode active material and a positive electrode additive. The positive electrode additive includes at least one of oxides, sulphides, peroxides, azides, or oxycarbides of sodium or potassium.

公开(公告)号：US20220352573A1

公开(公告)日：2022-11-03

申请号：US17528600

申请日：2021-11-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei WANG ,  Wenlin ZHOU ,  Xing LI ,  Peng WANG ,  Quankun LI ,  Xingdi CHEN ,  Yulian ZHENG

IPC: H01M10/653 ,  H01M10/613 ,  H01M50/15 ,  H01M50/55 ,  H01M50/531

Abstract: The embodiments of this application provide a battery cell, a battery, a power consumption device, and a battery manufacturing method and device, which pertains to the technical field of batteries. The battery cell includes a housing, an electrode assembly, and an end cover assembly. The electrode assembly is configured to be accommodated in the housing, and includes a main body portion and a tab. The end cover assembly includes an end cover configured to cover the opening and an electrode terminal mounted on the end cover and is configured to be electrically connected to the tab. The end cover includes a first body, which has a first inner surface and a first outer surface arranged opposite to each other in a thickness direction of the first body, and a first protruding portion, which protrudes from the first outer surface in a direction departing from the main body portion.