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：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：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：US20210043980A1

公开(公告)日：2021-02-11

申请号：US16964324

申请日：2019-10-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yiruo WANG ,  Xiaowei ZHANG ,  Hongwen CHANG ,  Xiao WANG ,  Peichao WANG ,  Xi CHEN

IPC: H01M10/0587 ,  B65H18/02 ,  B65H23/26

Abstract: The present disclosure relates to a conveying roller for conveying a cell pole piece, the cell pole piece comprising a main body and pole tabs, the main body comprising a bearing area and a transition area, each of the pole tabs comprising a root portion connected to the transition area, a middle section and a top portion, and the conveying roller comprising: a central axis, a first end face and a second end face disposed opposite to each other along the central axis, a transmission portion and an avoidance position provided between the first end face and the second end face, wherein the transmission portion is rotatable around the central axis, the bearing area is contactable with the transmission portion, so that the transmission portion applies a transmission friction force to the cell pole piece, and the avoidance position is capable of avoiding the transition area and the pole tabs.

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：US20240243337A1

公开(公告)日：2024-07-18

申请号：US18586375

申请日：2024-02-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M10/04 ,  H01M50/46

CPC classification number: H01M10/0431 ,  H01M10/0409 ,  H01M50/46

Abstract: An electrode assembly includes a first separator, a first electrode plate, and a second separator that are stacked. The first electrode plate is sandwiched between the first separator and the second separator. Along a width direction of the first electrode plate, partial edges of two sides of starting sections of the first separator and second separator are fixedly connected.

公开(公告)号：US20240072295A1

公开(公告)日：2024-02-29

申请号：US18503122

申请日：2023-11-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M10/04

CPC classification number: H01M10/0431 ,  H01M10/0468

Abstract: The present application relates to a battery cell manufacturing device and method. The battery cell comprises an electrode sheet and a separator. The electrode sheet has a free end in its own extension direction. The battery cell manufacturing device includes a winding pin and a lamination assembly. The winding pin is configured to wind the electrode sheet and separator into a battery cell. The lamination assembly is disposed upstream of the winding pin, and configured to connect the free end of the electrode sheet to the separator. The battery cell manufacturing device and method provided in the embodiments of the present application solve the problem that the free end of the electrode sheet is prone to shift relative to the separator during the battery cell production process, thus ensuring the safety of the battery cell produced.

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.