公开(公告)号：US20240313338A1

公开(公告)日：2024-09-19

申请号：US18669179

申请日：2024-05-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Quankun LI ,  Peng WANG ,  Haizu JIN

IPC: H01M50/342 ,  H01M10/04 ,  H01M50/133

CPC classification number: H01M50/3425 ,  H01M10/0404 ,  H01M50/133

Abstract: A battery cell includes a shell and an electrode assembly accommodated in the shell. The shell includes a wall portion, the wall portion includes a main body, a connecting portion and a reinforcing portion, the connecting portion surrounds an outer side of the reinforcing portion, and the main body surrounds an outer side of the connecting portion. The connecting portion is provided with a weakened region, and the battery cell is configured to rupture along the weakened region when an internal pressure of the battery cell reaches a threshold, so as to release the internal pressure. The maximum thickness of the reinforcing portion is greater than the maximum thickness of the main body so as to reduce deformation of the reinforcing portion under the internal pressure.

公开(公告)号：US20240154251A1

公开(公告)日：2024-05-09

申请号：US18409908

申请日：2024-01-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huasheng SU ,  Chengyou XING ,  Quankun LI ,  Peng WANG ,  Daowei YANG ,  Haizu JIN

IPC: H01M50/474 ,  H01M50/107 ,  H01M50/477 ,  H01M50/533 ,  H01M50/566

CPC classification number: H01M50/474 ,  H01M50/107 ,  H01M50/477 ,  H01M50/533 ,  H01M50/566

Abstract: A current collecting component for a battery cell having two output poles with opposite polarities for outputting electrical energy. The current collecting component includes two current collectors, an insulator, and a limiting structure. The two current collectors are arranged opposite each other along a width direction of the current collecting component and are configured to connect to the two output poles, respectively. The insulator is configured to connect the two current collectors and is located at least partially between the two current collectors in the width direction to insulate the two current collectors from each other. The limiting structure is configured to restrict the current collectors from leaving the insulator in the width direction.

公开(公告)号：US20240120608A1

公开(公告)日：2024-04-11

申请号：US18225685

申请日：2023-07-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Shengwang CHEN ,  Quankun LI ,  Peng WANG

IPC: H01M50/342 ,  H01M50/103 ,  H01M50/15

CPC classification number: H01M50/3425 ,  H01M50/103 ,  H01M50/15

Abstract: Embodiments of the present application provide an end cap, a battery cell, a battery and a power consuming device, which relate to the technical field of batteries. The end cap may include a cap body and a groove. The cap body may have a first surface. The groove may be provided in the cap body to form a pressure relief zone in a region of the cap body where the groove is provided. The groove may be recessed from the first surface in a thickness direction of the cap body, and groove side faces of the groove may include corner faces at corners of the groove. Each corner face may be connected to the first surface via a first chamfer face.

公开(公告)号：US20240055705A1

公开(公告)日：2024-02-15

申请号：US18494188

申请日：2023-10-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Shengwang CHEN ,  Ningsheng WU ,  Lulu BAI ,  Quankun LI ,  Peng WANG

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

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

Abstract: A battery cell, a battery, a power consuming apparatus, and a method and apparatus for manufacturing the battery cell are described. The battery cell includes a housing, an electrode assembly, and an end cap. The electrode assembly is accommodated in the housing. The end cap includes a first body portion and a first protrusion. The first body portion surrounds an edge of the first protrusion and is configured to be connected to the housing, the first protrusion protrudes relative to the first body portion in a direction away from the electrode assembly in a thickness direction of the end cap, and a first accommodating space is formed inside the first protrusion and is configured to accommodate at least a part of a tab of the electrode assembly. The first body portion is provided with a reinforcement portion being configured to enhance the stiffness of the first body portion.

公开(公告)号：US20230411744A1

公开(公告)日：2023-12-21

申请号：US18237902

申请日：2023-08-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fenggang Zhao ,  Yuqun Zheng ,  Jian Guo ,  Quankun LI ,  Peng Wang

IPC: H01M50/148 ,  H01M50/55 ,  H01M50/553 ,  H01M50/176 ,  H01M50/593 ,  H01M50/588

CPC classification number: H01M50/148 ,  H01M50/55 ,  H01M50/588 ,  H01M50/176 ,  H01M50/593 ,  H01M50/553

Abstract: The present disclosure relates to a cap assembly and a secondary battery. The cap assembly includes a cap plate provided with an electrode lead-out hole; an electrode terminal, covering the electrode lead-out hole and including a main body, wherein the main body is provided with a recess on a side wall; an isolating member including a receiving portion, wherein the main body is received in the receiving portion; and a protrusion, connected to an inner wall of the isolating member and extending towards an axis of the electrode lead-out hole, wherein the protrusion is received in the recess so as to prevent the main body from rotating relative to the isolating member. The cap assembly according to the embodiments of the present application can improve an overcurrent capacity and stability of the electrode terminal.

公开(公告)号：US20230369712A1

公开(公告)日：2023-11-16

申请号：US18351174

申请日：2023-07-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/342 ,  H01M50/15 ,  H01M50/103

CPC classification number: H01M50/3425 ,  H01M50/15 ,  H01M50/103 ,  H01M2200/20 ,  H01M2220/20

Abstract: An end cap, a battery cell, a battery and a power consuming device are described. The end cap includes a cap body and a pressure relief groove. The pressure relief groove is provided in the cap body, and the pressure relief groove defines a pressure relief zone. A length direction of the pressure relief zone is consistent with a width direction of the cap body. The end cap has a stress concentration region at a short edge of the pressure relief groove when the inner side of the end cap is subjected to the pressure inside the battery cell, and the end cap has a stress concentration region at a long edge of the pressure relief groove when the outer side of the end cap is subjected to an impact force.

公开(公告)号：US20230344068A1

公开(公告)日：2023-10-26

申请号：US18335619

申请日：2023-06-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Quankun LI ,  Wenwei CHEN ,  Peng WANG

IPC: H01M50/342 ,  H01M50/147 ,  H01M50/204 ,  H01M10/0585

CPC classification number: H01M50/342 ,  H01M50/147 ,  H01M50/204 ,  H01M10/0585 ,  H01M2220/30 ,  H01M2220/20

Abstract: An end cap includes a first recess recessed from a side facing toward an electrode assembly of a battery cell and away from the electrode assembly, and a second recess recessed from a side facing away from the electrode assembly and toward the electrode assembly. A bottom wall of the second recess includes a first part and a second part surrounding the first part. The first part and a bottom wall of the first recess are opposite to each other in a thickness direction of the end cap. The end cap further includes a pressure relief portion formed between the first part and the bottom wall of the first recess, and configured to be actuated when an internal pressure of the battery cell reaches a threshold. A side of the second part facing away from the electrode assembly forms an avoidance space to avoid the pressure relief portion.

公开(公告)号：US20230178788A1

公开(公告)日：2023-06-08

申请号：US18104109

申请日：2023-01-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quankun LI ,  Peng WANG ,  Taosheng ZHU

IPC: H01M10/04 ,  H01M50/15 ,  H01M50/124 ,  H01M50/545 ,  H01M50/578 ,  H01M50/566 ,  H01M50/567 ,  H01M50/188 ,  H01M50/176 ,  H01M50/522 ,  H01M50/553 ,  H01M50/562 ,  H01M50/55

CPC classification number: H01M10/04 ,  H01M50/15 ,  H01M50/124 ,  H01M50/545 ,  H01M50/578 ,  H01M50/566 ,  H01M50/567 ,  H01M50/188 ,  H01M50/176 ,  H01M50/522 ,  H01M50/553 ,  H01M50/562 ,  H01M50/55 ,  H01M50/159

Abstract: The present disclosure provides a cap assembly for a secondary battery, a secondary battery and a battery module. The cap assembly for the secondary battery includes a cap plate, a first electrode terminal, and a sealing member, wherein: the cap plate has an electrode lead-out hole; the first electrode terminal includes a first terminal board and a second terminal board connected with the first terminal board, wherein the first terminal board is located at a side of the second terminal board away from the cap plate, the second terminal board covers the electrode lead-out hole, and the material of the first terminal board and the material of the second terminal board have different base metals; the sealing member surrounds the electrode lead-out hole and is disposed between the cap plate and the first electrode terminal to seal the electrode lead-out hole.

公开(公告)号：US20230048125A1

公开(公告)日：2023-02-16

申请号：US17976882

申请日：2022-10-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huasheng SU ,  Chengyou XING ,  Quankun LI ,  Jing ZHANG ,  Haizu JIN

IPC: H01M50/152 ,  H01M50/636 ,  H01M50/536

Abstract: A battery cell may comprise: an electrode assembly, a housing and an end cap. The electrode assembly may have a first tab. The housing may have an opening for accommodating the electrode assembly. The end cap may be configured to connect with the housing and cover the opening. The end cap may have an abutting surface and a welding groove, the abutting surface may be configured to abut against the first tab, and the welding groove may be recessed from one side of the end cap away from the electrode assembly towards the abutting surface. The end cap may form a connector between the abutting surface and the bottom surface of the welding groove, and the connector is configured for being welded with the first tab. The end cap is provided with a reinforcing structure, and the reinforcing structure is protruded from the bottom surface.

公开(公告)号：US20230045904A1

公开(公告)日：2023-02-16

申请号：US17973811

申请日：2022-10-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quankun LI ,  Wenzhong LIU ,  Huasheng SU ,  Qifan ZOU ,  Peng WANG

IPC: H01M50/152 ,  H01M50/536 ,  H01M10/04 ,  H01M50/636

Abstract: A battery cell includes an electrode assembly, a housing configured to accommodate the electrode assembly and having an opening, an end cover configured to close the opening of the housing, and a current collecting member configured to electrically couple the electrode assembly to the end cover. The current collecting member is at least partly located between the electrode assembly and the end cover and abuts against the electrode assembly. The current collecting member has a hole. The electrode assembly is partly accommodated in the hole and contact a hole wall of the hole.