公开(公告)号：US20230327275A1

公开(公告)日：2023-10-12

申请号：US18333167

申请日：2023-06-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Kaihuan YANG ,  Ting ZHENG ,  Quankun LI ,  Peng WANG ,  Mingguang GU

IPC: H01M50/342 ,  F16K17/40

CPC classification number: H01M50/3425 ,  F16K17/403

Abstract: A pressure relief apparatus includes a pressure relief part having a first surface and a second surface opposite to each other in a thickness direction of the pressure relief part, and a plurality of stages of score grooves sequentially arranged on the pressure relief part in a direction from the first surface to the second surface. Of two adjacent stages of score grooves in the thickness direction, one stage of score groove that is farther from the first surface is arranged on a bottom surface of another stage of score groove that is closer to the first surface.

公开(公告)号：US20230198089A1

公开(公告)日：2023-06-22

申请号：US18169256

申请日：2023-02-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haibo KE ,  Quankun LI ,  Peng WANG

IPC: H01M50/342 ,  F16K17/40

CPC classification number: H01M50/3425 ,  F16K17/403

Abstract: A pressure relief device, a battery cell, a battery and an electrical device are provided. The pressure relief device has a pressure relief body and a pressure relief structure. The pressure relief structure has a first score groove, a second score groove and a third score groove provided on the pressure relief body. The first score groove and the third score groove are arranged at an interval, the first score groove and the third score groove both intersect with the second score groove, and the first score groove, the second score groove and the third score groove jointly define a pressure relief portion. The pressure relief portion is configured to split with the first score groove, the second score groove and the third score groove as boundaries when the pressure or temperature inside the battery cell reaches a threshold.

公开(公告)号：US20220013851A1

公开(公告)日：2022-01-13

申请号：US15734545

申请日：2020-07-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Jianxiong YANG ,  Peng WANG ,  Zhijun GUO ,  Quankun LI ,  Zhanyu SUN

IPC: H01M50/317 ,  H01M50/209 ,  H01M50/147 ,  H01M50/531

Abstract: The present application discloses a pressure relief mechanism, a battery cell and a battery. The pressure relief mechanism includes: a connecting mechanism including an aperture and a first boss, the first boss being connected to an inner wall of the aperture and extending toward an axis of the aperture; a pressure relief sheet for being actuated to release an internal pressure of the battery box when the internal pressure reaches a threshold and being arranged on a side of the first boss; a first protective sheet used to protect the pressure relief sheet and arranged on the other side of the first boss away from the pressure relief sheet; a compression ring arranged on a side of the first protective sheet away from the first boss; and a pressing structure connected to the connecting mechanism and being capable of being pressed toward the axis of the aperture.

公开(公告)号：US20210036285A1

公开(公告)日：2021-02-04

申请号：US16722251

申请日：2019-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Siying HUANG ,  Shiyao ZHANG ,  Quankun LI ,  Jinmei XU ,  Fenggang ZHAO ,  Xuehui WANG

IPC: H01M2/12 ,  H01M2/34

Abstract: Provided are a battery module, a secondary battery and a cap plate assembly. The battery module includes a plurality of secondary batteries arranged in sequence. The secondary battery includes an electrode assembly, a case and a cap plate assembly. The electrode assembly is received in the case and the cap plate assembly is connected to the case. The cap plate assembly includes a cap plate, an explosion-proof sheet and a fixing piece. The cap plate is disposed with a through hole, the explosion-proof sheet is disposed at the cap plate and seals the through hole, and the explosion-proof sheet has a weak region. The fixing piece connects the cap plate and the explosion-proof sheet. The fixing piece has a lower melting point than the cap plate and the explosion-proof sheet.

公开(公告)号：US20200343559A1

公开(公告)日：2020-10-29

申请号：US16732615

申请日：2020-01-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xing LI ,  Xiangyan BU ,  Qingyuan JIANG ,  Guijiu QU ,  Xiaowen ZHANG ,  Quankun LI ,  Lingbo ZHU

IPC: H01M4/70 ,  H01M2/26

Abstract: The present disclosure relates to a battery unit and a battery module, the battery unit includes an electrode assembly, including a main body portion and a tab; two electrode terminals; and two current collecting members respectively connecting the tabs on both sides of the main body portion with the respective electrode terminals; the current collecting member includes a guiding plate and a supporting plate, the guiding plate is located on one side of the main body portion along the length direction, a reinforcement portion is arranged on the guiding plate and is configured to reduce the deformation of the guiding plate towards the main body portion; and the supporting plate is connected to an end of the guiding plate along the width direction, the tab is bent relative to the length direction and connected to the supporting plate. The battery unit can reduce the bending deformation of the guiding plate.

公开(公告)号：US20190115568A1

公开(公告)日：2019-04-18

申请号：US16218018

申请日：2018-12-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun LI ,  Pinghua Deng ,  Peng Wang ,  Kai Wu ,  Junjie Jiang

IPC: H01M2/04 ,  H01M2/06 ,  H01M2/34

Abstract: The top cover structure of the power battery includes a cap plate, a cathode column, a conducting piece and a reversing piece, the conducting piece is electrically connected with the cathode column, the cathode column is insulatedly assembled with the cap plate; the reversing piece includes a welding part, a embossment and a joint part arranged between the welding part and the embossment, the embossment is arranged at the center of the reversing piece and protrudes towards the conducting piece, the welding part is arranged on the outer margin of the joint part; the welding part is electrically connected with the cap plate, the embossment does not contact the conducting piece, when the pressure inside the power battery increases, the reversing piece receives the pressure inside the power battery, and moves upwards, so that the embossment is electrically connected to the conducting piece.

公开(公告)号：US20190074487A1

公开(公告)日：2019-03-07

申请号：US16185451

申请日：2018-11-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jian GUO ,  Quankun LI ,  Pinghua DENG ,  Peng WANG ,  Lingbo ZHU ,  Qingkui CHI

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

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 is the electrode tab pad plate, and 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：US20170271630A1

公开(公告)日：2017-09-21

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 ,  H01M2/12 ,  H01M2/02 ,  H01M2/26 ,  H01M2/30

CPC classification number: H01M2/06 ,  H01M2/0237 ,  H01M2/0262 ,  H01M2/028 ,  H01M2/0469 ,  H01M2/0473 ,  H01M2/1247 ,  H01M2/26 ,  H01M2/263 ,  H01M2/30 ,  H01M10/0431 ,  H01M2220/20

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 located at upside of the electrode-tab pad-plate, the welding part is located at downside thereof, 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：US20170237059A1

公开(公告)日：2017-08-17

申请号：US15586051

申请日：2017-05-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quankun LI ,  Kai WU ,  Pinghua DENG ,  Xiaobo CHEN

IPC: H01M2/34 ,  H01M2/30 ,  H01M2/04

Abstract: A power battery cap structure and a power battery are provided. The power battery cap structure includes a first terminal, a second terminal and a cap assembly; the second terminal is electrically insulated from the cap assembly. The power battery cap structure further includes a resistance which electrically connects the first terminal with the cap assembly. The cap assembly includes a cap sheet, a first short circuit part and a second short circuit part; the first and second short circuit part are attached to the cap sheet, when internal pressure of the power battery exceeds predetermined threshold, the first and second short circuit part act and form a first path passing through the first terminal, the second short circuit part, the resistance and the second terminal, and a second path passing through the first terminal, the first and second short circuit part and the second terminal.

公开(公告)号：US20240322375A1

公开(公告)日：2024-09-26

申请号：US18678494

申请日：2024-05-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Liangfan XU ,  Ningsheng WU ,  Quankun LI ,  Peng WANG

IPC: H01M50/477 ,  H01M10/04 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474

CPC classification number: H01M50/477 ,  H01M10/0404 ,  H01M10/049 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474

Abstract: A battery cell includes a shell; an electrode assembly; and an end cap assembly, including an end cap, a first insulating member and a second insulating member, where the first insulating member is arranged between the electrode assembly and the end cap, so as to insulate and isolate the electrode assembly from the end cap, the second insulating member includes a main body portion and a first flanging portion, the first flanging portion is connected to one end of the main body portion, the main body portion is arranged between the shell and the electrode assembly, so as to insulate and isolate the shell from the electrode assembly, and the first flanging portion is connected to a side of the first insulating member facing the end cap or a side of the first insulating member away from the end cap.