公开(公告)号：US20240204312A1

公开(公告)日：2024-06-20

申请号：US18589579

申请日：2024-02-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Denghua LIN ,  Xinxiang CHEN ,  Shoujun HUANG ,  Long CHEN ,  Yulian ZHENG ,  Peng WANG ,  Haizu JIN

IPC: H01M50/176 ,  H01M50/15 ,  H01M50/209 ,  H01M50/249 ,  H01M50/503 ,  H01M50/55

CPC classification number: H01M50/176 ,  H01M50/15 ,  H01M50/209 ,  H01M50/249 ,  H01M50/503 ,  H01M50/55 ,  H01M2220/20

Abstract: A battery cell includes a case, a first battery cell, and a second battery cell, the first battery cell being arranged inside the case, the first battery cell including a first main body part and a first electrode lead-out component extending from a first side of the first main body part, the second battery cell being arranged inside the case, and the second battery cell including a second main body part and a second electrode lead-out component extending from a second side of the second main body part, wherein the first side of the first main body part and the second side of the second main body part are adjacent and arranged oppositely, the first electrode lead-out component includes a first connection surface inclined with respect to the first direction, and the second electrode lead-out component includes a second connection surface inclined with respect to the first direction.

公开(公告)号：US20230395908A1

公开(公告)日：2023-12-07

申请号：US18448195

申请日：2023-08-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanyu LIU ,  Yulian ZHENG ,  Shoujun HUANG ,  Xinxiang CHEN ,  Peng WANG

IPC: H01M50/169 ,  H01M50/242

CPC classification number: H01M50/169 ,  H01M50/242 ,  H01M2220/20

Abstract: Embodiments of this application provide a battery cell, a battery, and an apparatus using a battery, where the battery cell includes: a housing with an opening; and an end cover covering the opening. The housing and the end cover are welded together to form a fusion zone. The end cover is provided with a first stress-relieving groove on an inner surface. The first stress-relieving groove is configured to recess from the inner surface of the end cover in a direction leaving the inside of the battery cell, so as to relieve stress produced by welding of the housing and the end cover. The technical solutions provided in the embodiments of this application can enhance safety performance of batteries.

公开(公告)号：US20230261313A1

公开(公告)日：2023-08-17

申请号：US18303017

申请日：2023-04-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shoujun HUANG ,  Yulian ZHENG ,  Peng WANG ,  Xinxiang CHEN ,  Yanyu LIU

IPC: H01M50/342

CPC classification number: H01M50/3425

Abstract: A pressure relief mechanism is provided. The pressure relief mechanism is disposed on a housing plate of a battery cell, and including: a connecting portion, located in a peripheral region of the pressure relief mechanism, and configured to connect to the housing plate; a first part, where one end of the first part is connected to the connecting portion, and the other end of the first part extends obliquely toward an interior of the battery cell; a fragile portion, connected to the extending end of the first part; and a second part, taking a shape that protrudes toward the interior of the battery cell. An outer edge region of the second part is connected to the fragile portion. When an internal temperature or gas pressure of the battery cell is less than a preset value, the fragile portion is squeezed and pressed by the first part and/or the second part.

公开(公告)号：US20220384904A1

公开(公告)日：2022-12-01

申请号：US17701905

申请日：2022-03-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shoujun HUANG ,  Yanyu LIU ,  Xinxiang CHEN ,  Yulian ZHENG ,  Peng WANG

IPC: H01M50/325 ,  H01M10/04

Abstract: The present application provides an end cover assembly, a battery cell, a battery, an electric device and a method for preparing a battery cell and an apparatus for manufacturing a battery cell. The present application provides an end cover assembly, where the end cover assembly includes: a cover plate provided with a pressure relief hole; a fixing member fixed on the cover plate, the fixing member having a first through hole and a second through hole, and the first through hole being opposite to the pressure relief hole; and a gas permeable membrane covering at least a portion of the pressure relief hole, an edge part of the gas permeable membrane being connected to the fixing member, and a portion of the edge part being embedded into the second through hole, so as to prevent the edge part from moving relative to the fixing member.

公开(公告)号：US20220367996A1

公开(公告)日：2022-11-17

申请号：US17622024

申请日：2020-09-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xinxiang CHEN ,  Shoujun HUANG ,  Yulian ZHENG ,  Peng WANG ,  Wei LI ,  Chengdu LIANG

IPC: H01M50/655 ,  H01M50/15 ,  H01M50/186 ,  H01M50/342 ,  H01M50/308 ,  H01M50/184 ,  H01M50/103 ,  H01M50/209

Abstract: An end cover assembly includes: an end cover with a through hole for injecting electrolyte and a first clamping portion, wherein the first clamping portion is disposed along a circumferential direction of the through hole and is located on one side of the end cover away from an interior of the battery cell; a sealing ring for sealing the through hole; and a pressure relief device covering at least part of the sealing ring and closing the through hole; wherein the pressure relief device includes a second clamping portion, and is rotatable such that when the pressure relief device is rotated to a first position, the second clamping portion is clamped with the first clamping portion; and when the pressure relief device is rotated to a second position, the second clamping portion is disengaged from the first clamping portion.

公开(公告)号：US20210013458A1

公开(公告)日：2021-01-14

申请号：US16826228

申请日：2020-03-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huasheng SU ,  Shoujun HUANG ,  Yulian ZHENG

IPC: H01M2/02 ,  H01M2/08 ,  H01M2/06

Abstract: The disclosure relates to a cap assembly and a secondary battery. The cap assembly includes: a cap plate including a main portion and a convex portion, wherein the main portion includes a first surface, a second surface and an electrode lead-out hole; an electrode terminal including an extension portion that extends beyond a hole wall of the electrode lead-out hole and extends in a circumferential direction of the electrode lead-out hole to form a ring structure, and the extension portion is arranged on a side of the first surface away from the second surface; and a sealing ring at least partially disposed between the extension portion and the main portion, wherein the convex portion is disposed on the second surface and around the electrode lead-out hole and has a thickness of 0.01 mm to 2 mm, a top surface of the convex portion extends out of the second surface.