公开(公告)号：US20240372234A1

公开(公告)日：2024-11-07

申请号：US18774945

申请日：2024-07-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin Zhou ,  Yade Zhu ,  Quankun Li ,  Peng Wang

IPC: H01M50/636 ,  B60L50/64 ,  H01M50/103 ,  H01M50/15 ,  H01M50/342

Abstract: Provided are an end cover assembly, a battery unit, a battery, and an electricity consuming apparatus. The end cover assembly includes an end cover, a pressure relief mechanism, and a protective sheet. The end cover includes a main body part and a protruding part which protrudes from the main body part along the thickness direction of the end cover. The end cover is provided with a through hole which passes through the main body part and the protruding part. The pressure relief mechanism is disposed on a side of the main body part away from the protruding part and covers the through hole. The protective sheet is attached to a surface of the protruding part away from the main body part and covers the through hole. The protruding part includes a first convex part and a second convex part.

公开(公告)号：US12100867B2

公开(公告)日：2024-09-24

申请号：US18234496

申请日：2023-08-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qichang Cai ,  Chengyou Xing ,  Libin Zhong ,  Wenwei Chen ,  Quankun Li ,  Peng Wang

IPC: H01M50/645 ,  H01M50/148 ,  H01M50/186 ,  H01M50/15 ,  H01M50/60 ,  H01M50/636

CPC classification number: H01M50/645 ,  H01M50/148 ,  H01M50/186 ,  H01M50/15 ,  H01M50/60 ,  H01M50/636 ,  H01M2220/20 ,  Y02E60/10

Abstract: The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole.

公开(公告)号：US12080908B2

公开(公告)日：2024-09-03

申请号：US17564108

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Siying Huang ,  Quankun Li ,  Shiyao Zhang ,  Jinmei Xu ,  Fenggang Zhao ,  Peng Wang

IPC: H01M50/271 ,  H01M50/143

CPC classification number: H01M50/271 ,  H01M50/143

Abstract: The present application relates to the field of an energy storage device, and more particularly, to a top cover assembly of a secondary battery, the secondary battery and an apparatus using a battery. The top cover assembly includes: a top cover sheet provided with an explosion-proof hole; an explosion-proof sheet, a position of the explosion-proof sheet corresponding to the explosion hole; and a fixing member, at least part of the fixing member being located between the top cover sheet and the explosion-proof sheet and connecting the top cover sheet and the explosion-proof sheet; where one of the explosion-proof hole and the fixing member is provided with a protrusion and the other is provided with a first groove, and the protrusion and the first groove are fixed.

公开(公告)号：US11949119B2

公开(公告)日：2024-04-02

申请号：US16928523

申请日：2020-07-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quankun Li ,  Shiyao Zhang ,  Peng Wang

IPC: H01M50/325 ,  H01M50/147 ,  H01M50/155 ,  H01M50/183 ,  H01M50/184 ,  H01M50/30 ,  H01M50/358 ,  H01M50/383

CPC classification number: H01M50/325 ,  H01M50/147 ,  H01M50/155 ,  H01M50/183 ,  H01M50/184 ,  H01M50/358 ,  H01M50/383 ,  H01M50/394

Abstract: A cover assembly of a secondary battery and 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 protective part at least partially covering the gas vent and having a gas permeability coefficient smaller than a gas permeability coefficient of the gas exhaust valve.

公开(公告)号：US20240079693A1

公开(公告)日：2024-03-07

申请号：US18501040

申请日：2023-11-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin Zhou ,  Quankun Li ,  Daowei Yang ,  Peng Wang

IPC: H01M50/15 ,  H01M50/103 ,  H01M50/186 ,  H01M50/209 ,  H01M50/342

CPC classification number: H01M50/15 ,  H01M50/103 ,  H01M50/186 ,  H01M50/209 ,  H01M50/3425 ,  H01M2220/20

Abstract: Provided are an end cover assembly, a battery cell, a battery, and an electrical apparatus. The end cover assembly is for a battery cell and comprises: an end cover provided with a pressure relief through hole; a pressure relief mechanism connected to the end cover and covering the pressure relief through hole, and configured to be actuated to release the pressure inside the battery cell when the pressure reaches a threshold; and a reinforcing mechanism, located on a side of the end cover facing away from an electrode assembly of the battery cell, and covering at least a part of the pressure relief through hole. The reinforcing mechanism is at least connected to a portion of the end cover at two sides of the pressure relief through hole along a first direction to enhance the strength of the end cover at the pressure relief through hole.

公开(公告)号：US11916249B2

公开(公告)日：2024-02-27

申请号：US17134012

申请日：2020-12-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/342 ,  H01M50/148

CPC classification number: H01M50/342 ,  H01M50/148 ,  H01M2200/10

Abstract: This application relates to a cover assembly of a secondary battery. The cover assembly includes a cover plate with an air hole; a blocker inserted into and blocking the air hole; a sealing member disposed between the blocker and the cover plate configured to seal a gap between the blocker and the cover plate; and a fastener disposed inside the air hole. The fastener is connected to the cover plate, the blocker is connected to the cover plate through the fastener. The fastener is configured to deform in response to a temperature rise, so that the blocker stops blocking the air hole. The blocker stops blocking the air hole as a temperature inside a housing rises, to discharge gas from the housing through the air hole. In this way, the secondary battery can be prevented from an explosion, while partial heat is taken away through gas discharge.

公开(公告)号：US20230395958A1

公开(公告)日：2023-12-07

申请号：US18234496

申请日：2023-08-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qichang Cai ,  Chengyou Xing ,  Libin Zhong ,  Wenwei Chen ,  Quankun Li ,  Peng Wang

IPC: H01M50/645 ,  H01M50/186 ,  H01M50/148

CPC classification number: H01M50/645 ,  H01M50/186 ,  H01M50/148 ,  H01M2220/20 ,  H01M50/60

Abstract: The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole.

公开(公告)号：US11777162B2

公开(公告)日：2023-10-03

申请号：US16976752

申请日：2019-09-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fenggang Zhao ,  Yuqun Zeng ,  Jian Guo ,  Quankun Li ,  Peng Wang

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

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

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：US11715867B2

公开(公告)日：2023-08-01

申请号：US17113585

申请日：2020-12-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Ningsheng Wu ,  Chengyou Xing ,  Yuanbao Chen ,  Peng Wang ,  Quankun Li

IPC: H01M50/591 ,  H01M50/148 ,  H01M50/547 ,  H01M50/552 ,  H01M50/588 ,  H01M50/593

CPC classification number: H01M50/591 ,  H01M50/148 ,  H01M50/547 ,  H01M50/552 ,  H01M50/588 ,  H01M50/593 ,  H01M2220/20

Abstract: The embodiments of the application provides an end cover assembly, a battery cell, a battery module and a device, the end cover assembly is used for the battery cell, the end cover assembly includes an end cover; an electrode terminal disposed on the end cover; an insulating member for insulating the electrode terminal and the end cover and disposed to surround the electrode terminal; wherein the insulating member abuts the electrode terminal, at least one of the insulating member and the electrode terminal is provided with a stress relief groove, the stress relief groove is configured to absorb stress generated by the electrode terminal's abutting the insulating member.

公开(公告)号：US11637345B2

公开(公告)日：2023-04-25

申请号：US15892694

申请日：2018-02-09

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Peng Wang ,  Taosheng Zhu

IPC: H01M2/06 ,  H01M50/172 ,  H01M10/04 ,  H01M50/15 ,  H01M50/20 ,  H01M50/116 ,  H01M50/124 ,  H01M50/148 ,  H01M50/155 ,  H01M50/183 ,  H01M50/502 ,  H01M50/543 ,  H01M50/545 ,  H01M50/578

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.