公开(公告)号：US20230395870A1

公开(公告)日：2023-12-07

申请号：US18452888

申请日：2023-08-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui SHANGGUAN ,  Ziyu BAI ,  Daichun TANG ,  Xinxin DU ,  Yang HU

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M50/46

CPC classification number: H01M10/0587 ,  H01M10/0525 ,  H01M50/46 ,  H01M2220/20

Abstract: This application relates to an electrode assembly, a battery cell, a battery, and an electric device, and pertains to the technical field of battery manufacture. An electrode assembly is provided. The electrode assembly is a wound electrode assembly and includes a first separator and a second separator. A difference between a number of winding turns of the first separator and a number of winding turns of the second separator is greater than or equal to 1. The electrode assembly in embodiments of this application can reduce or avoid lithium precipitation, to improve safety of the battery cell.

公开(公告)号：US20220285737A1

公开(公告)日：2022-09-08

申请号：US17547535

申请日：2021-12-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui SHANGGUAN ,  Daichun TANG ,  Xinxin DU ,  Ziyu BAI ,  Ruihuan QIN

IPC: H01M10/0587 ,  H01M50/538

Abstract: The embodiments of the present application provide a winding type electrode assembly including a positive electrode plate and a negative electrode plate; the positive electrode plate includes a first positive winding end portion and a positive winding middle section; the negative electrode plate includes a first portion and a second portion; and an active material layer of the negative electrode plate exceeds an active material layer of the positive electrode plate, and a difference between a maximum width of a negative active material layer of the first portion and a minimum width of a positive active material layer of the first positive winding end portion is larger than a difference between a maximum width of a negative active material layer of the second portion and a minimum width of a positive active material layer of the positive winding middle section.

公开(公告)号：US20250015250A1

公开(公告)日：2025-01-09

申请号：US18888349

申请日：2024-09-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Daichun TANG ,  Yaxi TIAN ,  Xitong WANG ,  Tingzhen JI ,  Yurun XIA ,  Xiangyan CHEN

IPC: H01M4/04 ,  H01M4/02 ,  H01M10/0525

Abstract: The present application provides a negative electrode plate and the method for preparing the same, a secondary battery, and an electrical device. The negative electrode plate includes a negative electrode current collector, and a negative electrode film layer arranged on at least one surface of the negative electrode current collector, wherein the negative electrode film layer comprises infiltrating cavity which opens in a direction away from the negative electrode current collector and extend in a first direction; and wherein the negative electrode film layer has a dimension in the first direction denoted as A in μm, the infiltrating cavity has a dimension in the first direction denoted as A1 in μm, and the negative electrode plate satisfies 0.1≤A1/A≤1, and optionally, 0.2≤A1/A≤1.

公开(公告)号：US20240162568A1

公开(公告)日：2024-05-16

申请号：US18416863

申请日：2024-01-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Linting DING ,  Haiming ZHANG ,  Daichun TANG ,  Chunmei SHI

IPC: H01M50/449 ,  H01M10/0525

CPC classification number: H01M50/449 ,  H01M10/0525

Abstract: A separator includes a base film and a coating which covers a surface of the base film. The coating includes a main body and an edge portion arranged on the periphery of the main body. The edge portion has a greater thickness than the main body, and the edge portion is provided with several patterns arranged at intervals.

公开(公告)号：US20240322290A1

公开(公告)日：2024-09-26

申请号：US18732237

申请日：2024-06-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fei XI ,  Daichun TANG

IPC: H01M10/6551 ,  H01M10/613 ,  H01M50/233

CPC classification number: H01M10/6551 ,  H01M10/613 ,  H01M50/233

Abstract: A battery shell includes a shell body internally provided with an accommodating cavity. At least one face of a shell body facing and/or facing away from the accommodating cavity is provided with heat dissipation recesses, so that the face has a non-penetrating “skylight” structure. The heat dissipation recesses extend in a thickness direction of the shell body without penetrating the shell body. A plurality of heat dissipation recesses are provided in the at least one face of the shell body. All the heat dissipation recesses are arranged at intervals.

公开(公告)号：US20240088449A1

公开(公告)日：2024-03-14

申请号：US18509712

申请日：2023-11-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui SHANGGUAN ,  Daichun TANG ,  Xinxin DU ,  Ziyu BAI ,  Ruihuan QIN

IPC: H01M10/0587 ,  H01M50/538

CPC classification number: H01M10/0587 ,  H01M50/538 ,  H01M2220/20

Abstract: The embodiments of the present application provide a winding type electrode assembly including a positive electrode plate and a negative electrode plate; the positive electrode plate includes a first positive winding end portion and a positive winding middle section; the negative electrode plate includes a first portion and a second portion; and an active material layer of the negative electrode plate exceeds an active material layer of the positive electrode plate, and a difference between a maximum width of a negative active material layer of the first portion and a minimum width of a positive active material layer of the first positive winding end portion is larger than a difference between a maximum width of a negative active material layer of the second portion and a minimum width of a positive active material layer of the positive winding middle section.

公开(公告)号：US20230170592A1

公开(公告)日：2023-06-01

申请号：US18159684

申请日：2023-01-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui SHANGGUAN ,  Haizu JIN ,  Daichun TANG ,  Xinxin DU ,  Ziyu BAI ,  Ruihuan QIN

IPC: H01M50/593 ,  H01M50/586 ,  H01M50/538

CPC classification number: H01M50/593 ,  H01M50/586 ,  H01M50/538 ,  H01M2220/20

Abstract: An electrode assembly includes a first electrode plate and a second electrode plate. The first electrode plate includes a first body portion and a tab. The first body portion has a first end portion in a first direction. The tab is coupled to the first end portion. The second electrode plate includes a second body portion and an insulation portion coupled to the second body portion. The first body portion and the second body portion are stacked in a stacking direction perpendicular to the first direction. The second body portion has a second end portion close to the tab in the first direction. The insulation portion covers at least part of the second end portion so as to separate the tab from the second end portion when the tab is bent.

公开(公告)号：US20240266547A1

公开(公告)日：2024-08-08

申请号：US18620898

申请日：2024-03-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qingqing ZHU ,  Daichun TANG

IPC: H01M4/66 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/38 ,  H01M4/74 ,  H01M10/052

CPC classification number: H01M4/667 ,  H01M4/0435 ,  H01M4/0452 ,  H01M4/049 ,  H01M4/134 ,  H01M4/382 ,  H01M4/661 ,  H01M4/74 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027

Abstract: A lithium metal negative electrode includes a substrate, lithium metal, and a fiber layer. The substrate includes a copper mesh. The copper mesh is plated with the lithium metal. The copper mesh and the fiber layer are composited. The copper mesh serves as a substrate support structure for supporting the lithium metal.

公开(公告)号：US20240055646A1

公开(公告)日：2024-02-15

申请号：US18485822

申请日：2023-10-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Honggang YU ,  Huihui SHANGGUAN ,  Xinxin DU ,  Daichun TANG

IPC: H01M10/04 ,  H01M50/531

CPC classification number: H01M10/0431 ,  H01M50/531 ,  H01M10/0409 ,  H01M2220/20

Abstract: A wound electrode assembly includes a positive electrode sheet including a positive electrode winding starting section not provided with positive electrode tabs and a positive electrode winding extension section provided with a positive electrode tab. The positive electrode winding starting section and the positive electrode winding extension section are connected, and the positive electrode winding starting section is wound at least one circle.

公开(公告)号：US20230369636A1

公开(公告)日：2023-11-16

申请号：US18357408

申请日：2023-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xitong WANG ,  Daichun TANG ,  Xinxin DU ,  Honggang YU

IPC: H01M10/04 ,  H01M10/42 ,  H01M50/383 ,  H01M50/103

CPC classification number: H01M10/0431 ,  H01M10/4235 ,  H01M50/383 ,  H01M50/103

Abstract: An electrode assembly, a battery cell, a battery, and an electric device are described. The electrode assembly includes a first electrode plate, a second electrode plate, and a first insulation layer, the first electrode plate and the second electrode plate being wound to form the electrode assembly, where a winding terminating end of the first electrode plate exceeds a winding terminating end of the second electrode plate by at least half a turn so that the first electrode plate entirely covers an outer surface of an outermost turn of the second electrode plate, and the first insulation layer being applied on an outer surface of an outermost turn of the first electrode plate. According to this application, the terminating end of the first electrode plate is set to exceed the second electrode plate by at least half a turn.