公开(公告)号：US20230246306A1

公开(公告)日：2023-08-03

申请号：US18297968

申请日：2023-04-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qinglin BAI ,  Yuqian WEN ,  Lingyan JIANG

IPC: H01M50/533 ,  H01M10/04

CPC classification number: H01M50/533 ,  H01M10/0431

Abstract: Described are an electrode assembly, and a method for manufacturing the electrode assembly, the electrode assembly being configured for a secondary battery. The electrode assembly includes a main portion and a tab, the tab is located at an end portion of the main portion and is connected to the main portion; and the tab includes a shaping guide portion and a shaping deformation area, and the shaping guide portion guides the tab to generate predetermined deformation during shaping so as to form the shaping deformation area. By arranging the shaping guide portion on the tab, when a tab end face is shaped, the shaping guide portion guides the tab to generate roughly regular deformation, thereby forming the compact and flat tab end face. The arrangement of the shaping guide portion reduces the force required for the shrinking deformation of the tab and avoids damage or misalignment of an electrode plate.

公开(公告)号：US20220223979A1

公开(公告)日：2022-07-14

申请号：US17712084

申请日：2022-04-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qinglin BAI ,  Zhiyang WU ,  Shan GAO ,  Chunyang PENG ,  Lingyan JIANG

IPC: H01M50/474 ,  H01M10/04 ,  H01M50/107 ,  H01M50/531 ,  H01M50/477

Abstract: The present application relates to a secondary battery, a battery module and an apparatus. The secondary battery includes an electrode assembly and a casing. The electrode assembly includes a main body portion and a tab portion, the tab portion extending out from the main body portion along an end of the main body portion and including an outer peripheral surface. The casing includes an accommodating hole for accommodating the electrode assembly. The casing includes a limiting protrusion. The outer peripheral surface extends around an axis of the accommodating hole. The limiting protrusion protrudes toward the tab portion and presses against the outer peripheral surface of the tab portion. The limiting protrusion is adapted to limit a position of the tab portion. The secondary battery provided by the present application can reduce the possibility of fatigue fracture of the adapting piece.

公开(公告)号：US20210344088A1

公开(公告)日：2021-11-04

申请号：US17134248

申请日：2020-12-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Qinglin BAI ,  Yanan CAI ,  Hongbo DING

IPC: H01M50/586 ,  H01M50/147 ,  H01M10/04 ,  H01M50/463 ,  H01M50/547

Abstract: Embodiments of the present disclosure relates to an electrode assembly, a secondary battery, a battery pack and a device. The electrode assembly includes: an electrode unit including an electrode body and an electrode terminal part electrically connected with the electrode body; and a first insulating film for being wound around the electrode unit, the first insulating film including a connection part and an extension part connected with each other, the connection part being provided with an adhesive area for connecting with the electrode terminal part, the extension part being a part of the first insulating film extending beyond an end face of the electrode terminal part, and at least part of the extension part being provided as a non-adhesive area.

公开(公告)号：US20240313310A1

公开(公告)日：2024-09-19

申请号：US18674604

申请日：2024-05-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqian WEN ,  Wei ZHANG ,  Meng LI ,  Wenqi ZHU ,  Qinglin BAI ,  Minghao TANG ,  Xiaowei ZHANG

IPC: H01M50/148 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/188 ,  H01M50/538

CPC classification number: H01M50/154 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/188 ,  H01M50/538

Abstract: A battery cell includes a housing having an opening, an end cap assembly for closing the opening and including an end cap body and an electrode terminal connected to the end cap body in an insulating manner, and an electrode assembly arranged in the housing and being of a wound structure and including: a wound main body, a first tab and a second tab, the first tab and the second tab having opposite polarities and being connected to the same side of the wound main body along a winding axis of the wound structure. The first tab is electrically connected to the electrode terminal, and the second tab is electrically connected to the end cap body.

公开(公告)号：US20230327175A1

公开(公告)日：2023-10-12

申请号：US18331598

申请日：2023-06-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaowei ZHANG ,  Wei ZHANG ,  Yuqian WEN ,  Minghao TANG ,  Zhiyang WU ,  Qinglin BAI

IPC: H01M10/04 ,  B65H18/04

CPC classification number: H01M10/0409 ,  B65H18/04 ,  B65H18/10

Abstract: The present application discloses a winding needle sleeve, a battery unit, a battery, a power-consuming device and a winding device. A wall of the winding needle sleeve is provided with a through slot extending through the wall. The through slot extends from one end to the other end of the winding needle sleeve, so as to allow expansion or contraction of the winding needle sleeve in a radial direction. The technical solution provided by the present application can solve the problem in the prior art that an electrode assembly collapses due to expansion and contraction thereof, resulting in wrinkling of a surface of the electrode assembly and the phenomenon of lithium deposition, thus causing potential safety hazards.