公开(公告)号：US20240250310A1

公开(公告)日：2024-07-25

申请号：US18627463

申请日：2024-04-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaowei ZHANG ,  Wei ZHANG ,  Xiang WU ,  Guoda HUANG ,  Yuqian WEN ,  Minghao TANG ,  Shengwu ZHANG

IPC: H01M10/0587 ,  H01M50/204

CPC classification number: H01M10/0587 ,  H01M50/204

Abstract: An electrode assembly includes: a first electrode plate layer, a first separator, a second electrode plate layer and a second separator. A winding start end of the first electrode plate layer, a winding start end of the first separator, and a winding start end of the second separator are substantially aligned with one another. The first electrode plate layer includes a first insulating section and a first electrode plate connected to each other, and the end of the first insulating section away from the first electrode plate is the winding start end of the first electrode plate layer. Along a winding direction of the electrode assembly, the winding start end of the second electrode plate layer is substantially aligned with the winding start end of the first electrode plate layer, or is located downstream of the winding start end of the first electrode plate layer.

公开(公告)号：US20230378513A1

公开(公告)日：2023-11-23

申请号：US18228434

申请日：2023-07-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaowei ZHANG ,  Zhiwen WANG ,  Wei ZHANG ,  Xiang WU ,  Yuqian WEN ,  Minghao TANG ,  Shengwu ZHANG

IPC: H01M10/04

CPC classification number: H01M10/0409 ,  H01M10/0431

Abstract: A winding device includes a pair of outer pins oppositely arranged in a first direction with a periphery for an electrode assembly to wind around, adjusting members configured to reciprocate in a second direction perpendicular to the first direction to drive the pair of outer pins to move away from or close to each other to increase or reduce a distance between the pair of outer pins, a pair of inner pins arranged oppositely in the first direction between the pair of outer pins and configured to move independent of the adjusting members to clamp or release the electrode assembly, and an elastic returning member configured to apply an elastic force in the first direction to at least one of the pair of inner pins such that the pair of inner pins have a tendency to be close to each other.

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：US20230361336A1

公开(公告)日：2023-11-09

申请号：US18354135

申请日：2023-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaowei ZHANG ,  Wei ZHANG ,  Yuqian WEN ,  Minghao TANG ,  Shengwu ZHANG ,  Jun NI

IPC: H01M10/04

CPC classification number: H01M10/0409 ,  H01M10/0431

Abstract: The present application discloses a winding shaft fixture, a winding device, and a method for preparing an electrode assembly. The winding shaft fixture includes a clamping mechanism and a tensioning mechanism. The clamping mechanism is used to clamp or release an end of a winding shaft. The tensioning mechanism is connected to the clamping mechanism, and the tensioning mechanism is configured to apply a pulling force to the clamping mechanism when the clamping mechanism clamps the end of the winding shaft, so as to apply the pulling force to the winding shaft. According to the technical solutions of the present application, the winding shaft can be allowed to have a higher winding speed to improve the production efficiency of the electrode assembly.

公开(公告)号：US20230318011A1

公开(公告)日：2023-10-05

申请号：US18326322

申请日：2023-05-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaowei ZHANG ,  Jun NI ,  Zhiwen WANG ,  Yuqian WEN ,  Minghao TANG ,  Chao XIE

IPC: B65H23/195 ,  B65H75/24 ,  H01M10/04

CPC classification number: B65H23/195 ,  B65H75/24 ,  H01M10/0409

Abstract: A winding shaft structure includes a winding shaft holder rotatable around an axial direction of the winding shaft structure, a first shaft group connected to one side of the winding shaft holder in the axial direction and configured to rotate together with the winding shaft holder, a second shaft group disposed on a side of the first shaft group in a radial direction of the winding shaft structure, a connecting member connected between the first shaft group and the second shaft group such that the second shaft group is movable with respect to the first shaft group in the radial direction via the connecting member, and a piezoelectric adjustment member disposed between the first shaft group and the second shaft group and deformable in the radial direction to adjust a distance between the first shaft group and the second shaft group.

公开(公告)号：US20240240935A1

公开(公告)日：2024-07-18

申请号：US18620924

申请日：2024-03-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaowei ZHANG ,  Zhiwen WANG ,  Wei ZHANG ,  Yuqian WEN ,  Minghao TANG ,  Shengwu ZHANG

IPC: G01B11/14 ,  H01M10/04

CPC classification number: G01B11/14 ,  H01M10/0409 ,  H01M10/0431

Abstract: A cell winding calibration method includes: obtaining a first reference distance between first and second reference lines; obtaining a reference number of pixels included in the first reference distance, and determining, based on the first reference distance and the reference number of pixels included in the first reference distance, an actual distance corresponding to a single pixel; obtaining an actual number of pixels included in a distance between an edge of a winding substrate and the first or second reference line, and determining real-time position information of the edge of the winding substrate based on the actual number of pixels included in the distance between the edge of the winding substrate and the first or second reference line and the actual distance corresponding to a single pixel; and calibrating the winding substrate based on the real-time position information of the edge of the winding substrate.

公开(公告)号：US20230327306A1

公开(公告)日：2023-10-12

申请号：US18202308

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanchao ZHANG ,  Feng PAN ,  Yuqian WEN

IPC: H01M50/645 ,  H01M50/166 ,  H01M50/186

CPC classification number: H01M50/645 ,  H01M50/166 ,  H01M50/186 ,  H01M50/102

Abstract: A battery cell may comprise: a case having an opening; an end cover assembly for closing the opening, wherein the end cover assembly may be provided with a liquid injection hole, and the liquid injection hole may comprise a first hole segment; a rivet, comprising a nail cap and a nail body, wherein the nail body may pass through the first hole segment, and the nail cap may be located on the side of the first hole segment away from the interior of the case; and a sealer, disposed between the nail cap and the end cover assembly, for sealing the first hole segment.

公开(公告)号：US20200020952A1

公开(公告)日：2020-01-16

申请号：US16233296

申请日：2018-12-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zige ZHANG ,  Qingrui XUE ,  Miao JIANG ,  Jing LI ,  Wei LI ,  Yuqian WEN ,  Long WANG

IPC: H01M4/64 ,  H01M10/04 ,  H01M2/26

Abstract: A secondary battery has an electrode plate, including a current collector, an active material layer and a conductive structure. The current collector includes an insulating layer, first and second conductive layers, and the first conductive layer and the second conductive layer are respectively arranged onto two surfaces of the insulating layer. The first conductive layer has a first body section with a first protruding section connected thereto. The second conductive layer has a second body section with a second protruding section connected thereto. The conductive structure includes a first conductive member connected to the first protruding section and a second conductive member connected to the second protruding section. The second conductive member is bent towards the first conductive member and connected to the first conductive member, and the first conductive member extends away from the active material layer and is beyond the second conductive member.

公开(公告)号：US20180138492A1

公开(公告)日：2018-05-17

申请号：US15868968

申请日：2018-01-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenfa LIN ,  Yuqian WEN ,  Chao YANG ,  Lei ZHANG

IPC: H01M2/36 ,  H01M2/04 ,  H01M10/0525

Abstract: A welding assembly for a liquid-injection hole of a secondary battery, including a top cover of a case, a liquid-injection hole, a sealing cover-plate and a stress release structure, wherein the liquid-injection hole is disposed in the top cover and includes a assembling recess and a through-hole arranged sequentially from top to bottom of the top cover, the assembling recess and the through-hole present a stepped transition and the radial dimension of the assembling recess is larger than that of the through-hole. The sealing cover-plate is accommodated in the assembling recess and the stress release structure is provided at one or both sides of the welding portion and capable of releasing stress from the welding portion. The welding assembly provides a stress release structure nearby the welding portion, and when the welding portion is full-strength welded, the stress-release structure can effectively release stress nearby the welding seam.

公开(公告)号：US20240261845A1

公开(公告)日：2024-08-08

申请号：US18639741

申请日：2024-04-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hao MENG ,  Youcheng PAN ,  Zhixin LUO ,  Yuqian WEN ,  Wenqi ZHU

IPC: B21D51/26 ,  H01M10/04

CPC classification number: B21D51/2638 ,  B21D51/263 ,  H01M10/0404

Abstract: A necking and flanging apparatus includes: an inner mold; a necking piece, disposed around the inner mold, where the necking piece is movable along a radial direction of the inner mold, and the necking piece is configured to coordinate with the inner mold to form a necked portion on a housing; and a press-fit piece, disposed around the inner mold, where the press-fit piece is movable along an axial direction of the inner mold, and the press-fit piece is configured to fit the necking piece to press and flatten the flanged portion of the housing.