公开(公告)号：US20230238642A1

公开(公告)日：2023-07-27

申请号：US18129740

申请日：2023-03-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wanqiu MENG ,  Qian Liu ,  Yonghuang Ye ,  Wenzhong Liu ,  Xiaoxi Zhang ,  Longfei Xue

IPC: H01M50/342 ,  H01M50/148 ,  H01M50/375

CPC classification number: H01M50/3425 ,  H01M50/148 ,  H01M50/375 ,  H01M2220/20

Abstract: The present application provides a battery cell, including a cover plate, a housing, and a gas-permeable film. The housing has an opening, and the cover plate covers the opening of the housing. The cover plate and/or housing have/has at least one through hole, and the inside and the outside of the battery cell are in communication with each other via the through hole; and the gas-permeable film is connected to the inside of the cover plate and/or housing and covers the at least one through hole. According to the battery cell of the present application, gas inside a battery can be discharged to prevent the gas from accumulating inside the housing, thereby improving performance of an electrode assembly, prolonging service life of a secondary battery, and ensuring safety performance of the battery cell.

公开(公告)号：US20230114679A1

公开(公告)日：2023-04-13

申请号：US18064933

申请日：2022-12-13

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wanqiu Meng ,  Qian Liu ,  Yonghuang Ye ,  Yulian Zheng ,  Longfei Xue ,  Xiaoxi Zhang ,  Peng Wang

IPC: H01M50/30 ,  H01M50/147

Abstract: A battery cell, a cover assembly, a battery, an electric apparatus, a method, and a device are provided. The battery cell includes: an electrode assembly; a housing to accommodate the electrode assembly, where a wall portion of the housing includes a body portion and a fastener, the fastener is provided with a recess communicating with the outside, and the recess is arranged on an inner surface of the fastener facing the electrode assembly and recessed in a direction leaving the electrode assembly; and an air-permeable member covering the recess, where the air-permeable member is configured to allow gas to be discharged to the outside of the housing through the recess when a gas pressure inside the housing reaches a threshold, a bottom wall of the recess is provided with a protruding portion extending toward the electrode assembly, and the protruding portion is configured to be attached to the air-permeable member.

公开(公告)号：US20240297405A1

公开(公告)日：2024-09-05

申请号：US18665594

申请日：2024-05-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Gao Deng ,  Yuefei Chen ,  Wanqiu Meng ,  Xiaoxi Zhang ,  Longfei Xue

IPC: H01M50/30 ,  H01M50/317

CPC classification number: H01M50/394 ,  H01M50/317 ,  H01M2200/20

Abstract: This application provides a degassing apparatus, a battery cell, a battery, and an electric apparatus. The degassing apparatus includes a degassing body, a breathable member, and a protection member. The breathable member and the protection member are disposed at the degassing body, and the protection member is disposed on a side of the breathable member back away from an electrode assembly of the battery cell. The protection member is provided with a through-hole, and a gas channel in communication with the first through-hole is formed between the breathable member and the protection member. The breathable member is configured for gas to pass through when pressure in the battery cell reaches a first threshold, such that the gas passes through the gas channel and the first through-hole to be discharged outside the battery cell.

公开(公告)号：US20230163410A1

公开(公告)日：2023-05-25

申请号：US18151468

申请日：2023-01-09

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wanqiu Meng ,  Qian Liu ,  Yonghuang Ye ,  Yulian Zheng ,  Longfei Xue ,  Xiaoxi Zhang ,  Peng Wang

IPC: H01M50/30 ,  H01M50/15

CPC classification number: H01M50/394 ,  H01M50/15 ,  H01M2200/20 ,  H01M2220/20

Abstract: An exhaust apparatus, a battery cell, a battery, and an electric apparatus, are provided. The exhaust apparatus includes an exhaust body and an exhaust mechanism, where the exhaust mechanism includes a connection member and a ventilation member that are provided on the exhaust body, the connection member is configured to connect the exhaust body, the connection member is provided with a plurality of first through holes, the ventilation member covers the plurality of first through holes, and the ventilation member is configured to, when a pressure of gas inside a battery cell reaches a first threshold, exhaust the gas to the outside of the battery cell through the plurality of first through holes.