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：US20220311054A1

公开(公告)日：2022-09-29

申请号：US17543850

申请日：2021-12-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M10/0585 ,  H01M50/209 ,  H01M4/38 ,  H01M4/70

Abstract: The present application provides an electrode assembly, a batter cell, a battery, an electric apparatus, and a manufacturing method and device of the electrode assembly. A negative plate of the electrode assembly includes a plurality of first negative active material layers located in an abutting region, and a plurality of second negative active material layers located in a non-abutting region; a positive plate of the electrode assembly includes a plurality of first positive active material layers located in the abutting region, and a plurality of second positive active material layers located in the non-abutting region. An active material capacity per unit area of the first negative active material layer is greater than that of the second negative active material layer; and/or an active material capacity per unit area of the first positive active material layer is less than that of the second positive active material layer.

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.