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：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.