公开(公告)号：US20230223669A1

公开(公告)日：2023-07-13

申请号：US18149674

申请日：2023-01-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wenlin Zhou ,  Shengwang Chen ,  Liangfan Xu ,  Quankun Li ,  Xing Li

IPC: H01M50/586 ,  H01M50/103 ,  H01M50/593 ,  H01M50/15 ,  H01M50/209 ,  H01M10/04

CPC classification number: H01M50/586 ,  H01M50/103 ,  H01M50/593 ,  H01M50/15 ,  H01M50/209 ,  H01M10/0404 ,  H01M2220/20 ,  H01M2200/00

Abstract: A battery cell, a battery, an electrical device, and a method and device for manufacturing the battery cell. In some embodiments, the battery cell comprises a battery core, a shell, an end cover, and a first insulating component. The battery core comprises a main body part and electrode tabs protruding from the main body part. The shell has a first opening and is configured to accommodate the battery core. The end cover is configured to cover the first opening. The first insulating component comprises an insulating main body and an insulating part, wherein the insulating main body is located on a side, facing the electrode tabs, of the end cover, and the insulating main body is configured to isolate the battery core from the end cover.

公开(公告)号：US11637348B2

公开(公告)日：2023-04-25

申请号：US16941419

申请日：2020-07-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shiyao Zhang ,  Quankun Li ,  Peng Wang ,  Zhanyu Sun ,  Siying Huang ,  Jinmei Xu

IPC: H01M50/342 ,  H01M50/543 ,  H01M50/578 ,  H01M50/20 ,  H01M50/147 ,  H01M10/04

Abstract: A cover assembly of a secondary battery. The cover assembly includes: a cover plate including a gas vent; a gas exhaust valve configured to seal the gas vent and deform in response to an increase in temperature to get out of a state of sealing the gas vent; and a sealing part arranged between the gas exhaust valve and the cover plate and surrounding the gas vent for sealing a gap between the gas exhaust valve and the cover plate.

公开(公告)号：US11581610B2

公开(公告)日：2023-02-14

申请号：US17113010

申请日：2020-12-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun Zeng ,  Jianxiong Yang ,  Peng Wang ,  Zhijun Guo ,  Quankun Li ,  Zhanyu Sun

IPC: H01M50/30 ,  H01M10/42 ,  H01M10/613 ,  H01M50/249 ,  H01M50/271 ,  H01M10/647 ,  H01M10/0525

Abstract: Disclosed are a battery box, a battery cell, a battery, and a method and apparatus for preparing the battery box. The battery box includes a pressure relief region including a first recess arranged at an inner surface of the battery box and a second recess arranged at an outer surface of the battery box, the first recess being arranged opposite to the second recess, wherein a third recess is provided at a bottom wall of the first recess and/or a bottom wall of the second recess, and the pressure relief region is configured to fracture at the third recess, when an internal pressure of the battery box reaches a threshold, to relieve the internal pressure. According to the battery box, the battery cell, the battery, and the method and apparatus for preparing the battery box disclosed in the present application, the pressure relief region is easy to machine.

公开(公告)号：US20230006317A1

公开(公告)日：2023-01-05

申请号：US17930722

申请日：2022-09-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huasheng Su ,  Chengyou Xing ,  Kun Fang ,  Quankun Li ,  Wenlong Kang ,  Peng Wang

IPC: H01M50/559

Abstract: A battery cell is provided. The battery cell includes a tab, an electrode terminal, an adapter for electrical connection between the electrode terminal and the tab. The adapter includes a first connecting portion for electrical connection with the electrode terminal; a second connecting portion for electrical connection with the tab; a third connecting portion for connecting the first connecting portion and the second connecting portion; and a bending portion, the third connecting portion is connected with the first connecting portion by the bending portion and the third connecting portion is connected with the second connecting portion by the bending portion; the third connecting portion includes a reinforcing portion, and the reinforcing portion is located at the connection of the third connecting portion and the bending portion; the minimum distance L from an edge of the reinforcing portion to a center line of the bending portion satisfies: R

公开(公告)号：US20210234175A1

公开(公告)日：2021-07-29

申请号：US17230988

申请日：2021-04-14

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuanbao CHEN ,  Quankun Li ,  Peng Wang

IPC: H01M4/70 ,  H01M10/04

Abstract: This application provides a current collecting member, a secondary battery, and a method for manufacturing a secondary battery. The current collecting member includes a substrate and a support plate, the substrate is disposed on a side of a body of the electrode assembly in the transverse direction and extends in a direction perpendicular to the transverse direction, the support plate extends from an outer end of the substrate in the longitudinal direction and folds back to a side of the substrate farther from the body. The support plate includes a bending portion and a connecting portion, the bending portion is connected to the substrate and bent into an arc shape, and the connecting portion extends from an end of the bending portion farther from the substrate; and a first tab of the electrode assembly is connected to the connecting portion and bent along a surface of the bending portion.

公开(公告)号：US10714721B2

公开(公告)日：2020-07-14

申请号：US15594684

申请日：2017-05-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Pinghua Deng ,  Peng Wang ,  Kai Wu ,  Yongshou Lin

IPC: H01M2/12 ,  H01M10/04 ,  H01M2/14 ,  H01M2/36 ,  H01M2/18 ,  H01M2/02

Abstract: The present invention provides a secondary battery including: a housing, the housing being provided with an explosion proof valve at a bottom thereof, a cell pallet received in the housing and located at a bottom of the housing, the cell pallet being provided with a first through-hole and at least one groove, the first through-hole being aligned with the explosion proof valve and extending through the cell pallet to communicate a space above the cell pallet and a space below the cell pallet, the at least one groove being provided on an upper surface and/or a lower surface of the cell pallet, and the first through-hole communicating with at least one side edge of the cell pallet through the at least one groove; a bare cell received in the housing and seated on the cell pallet; and a top cover assembled to a top side of the housing.

公开(公告)号：US10651435B2

公开(公告)日：2020-05-12

申请号：US15950638

申请日：2018-04-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Baisong Chen ,  Peng Wang ,  Zhiyu Wang ,  Quankun Li ,  Taosheng Zhu

IPC: H01M2/04 ,  H01M2/34 ,  H01M2/30

Abstract: A top cover assembly for secondary battery, including: first and second electrode terminals; a top cover plate insulated from the first electrode terminal and electrically connected with the second electrode terminal; a contact piece attached to the top cover plate; and a thermo-deformable piece opposite to the contact piece, one end being electrically connected with the first electrode terminal, the other end being a free end; when a temperature at which the thermo-deformable piece deforms is not reached and internal pressure of the secondary battery exceeds a reference pressure, the contact piece deforms to be electrically connected with the thermo-deformable piece so that the first electrode terminal is electrically connected with the second electrode terminal, and when the temperature at which the thermo-deformable piece deforms is reached, the free end deforms away from the contact piece, and the thermo-deformable piece is kept insulated from the contact piece.

公开(公告)号：US10205141B2

公开(公告)日：2019-02-12

申请号：US15187909

申请日：2016-06-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jian Guo ,  Quankun Li ,  Pinghua Deng ,  Peng Wang ,  Lingbo Zhu ,  Qingkui Chi

IPC: H01M2/06 ,  H01M2/20 ,  H01M2/30 ,  H01M2/04 ,  H01M2/26 ,  H01M10/04 ,  H01M2/02 ,  H01M2/12

Abstract: The secondary battery of the present invention includes: a top cover, a first electrode terminal, a second electrode terminal, an electrode-tab pad-plate, an electrode assembly, a first electrode-tab and a second electrode-tab; the first and second electrode terminal are arranged on the top cover, the electrode-tab pad-plate is a strip-plate shaped structure, and is located between the top cover and electrode assembly, the first electrode-tab includes a connecting part, a folding part and a welding part, the connecting part is beneath the electrode-tab pad-plate, the welding part is above the electrode-tab pad-plate, the connecting part is connected with the electrode assembly, the welding part is connected with the first electrode terminal, the folding part is connected with the connecting part and welding part bypassing the electrode-tab pad-plate; the second electrode terminal is connected with the electrode assembly through the second electrode-tab.

公开(公告)号：US20170331090A1

公开(公告)日：2017-11-16

申请号：US15594684

申请日：2017-05-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Pinghua Deng ,  Peng Wang ,  Kai Wu ,  Yongshou Lin

IPC: H01M2/12 ,  H01M10/04

Abstract: The present invention provides a secondary battery including: a housing, the housing being provided with an explosion proof valve at a bottom thereof; a cell pallet received in the housing and located at a bottom of the housing, the cell pallet being provided with a first through-hole and at least one grooves, the first through-hole being aligned with the explosion proof valve and extending through the cell pallet to communicate a space above the cell pallet and a space below the cell pallet, the at least one grooves being provided on an upper surface and/or a lower surface of the cell pallet, and the first through-hole communicating with at least one side edge of the cell pallet through the at least one grooves; a bare cell received in the housing and seated on the cell pallet; and a top cover assembled to a top side of the housing.