公开(公告)号：US20230268608A1

公开(公告)日：2023-08-24

申请号：US18306447

申请日：2023-04-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shilong CHEN ,  Piaopiao YANG ,  Xiaobo CHEN ,  Yao LI ,  Lu HU

IPC: H01M50/342 ,  H01M50/147 ,  H01M50/186 ,  H01M10/44 ,  H01M10/0585

CPC classification number: H01M50/342 ,  H01M50/147 ,  H01M50/186 ,  H01M10/445 ,  H01M10/443 ,  H01M10/0585 ,  H01M50/249

Abstract: A battery cell, including a housing, a pressure relief member disposed on a first wall of the housing, an electrode assembly disposed inside the housing, an electrolyte immersing the electrode assembly, and a sealing member and an active substance that are disposed inside the housing. The sealing member is configured to seal the active substance on a side of electrode assembly close to the first wall. The sealing member is configured to be actuated when an internal pressure or temperature of the battery cell reaches a first threshold, to release the active substance, and the active substance is able to react with the electrolyte and/or the electrode assembly to increase the internal pressure or temperature of the battery cell, so as to actuate the pressure relief member. The battery cell can quickly discharge its internal temperature and pressure when experiencing thermal runaway, and the battery cell has good safety performance.

公开(公告)号：US20240339681A1

公开(公告)日：2024-10-10

申请号：US18749859

申请日：2024-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaoji WU ,  Xiaobo CHEN ,  Shilong CHEN

IPC: H01M10/42 ,  H01M10/48 ,  H01M50/209

CPC classification number: H01M10/425 ,  H01M10/486 ,  H01M50/209 ,  H01M2010/4271 ,  H01M2200/20

Abstract: A battery pack, a safety control method therefor, and an electric apparatus are provided. The battery pack includes: a box assembly; a plurality of battery cells disposed in the box assembly, the battery cell having a housing; and a safety protection mechanism disposed in the box assembly and having a first state and a second state. When the safety protection mechanism is in the first state, the plurality of battery cells are insulated from the box assembly. The safety protection mechanism is in the second state when a preset trigger condition is met, and when the safety protection mechanism is in the second state, the housings of at least some of the battery cells are electrically connected to the box assembly.

公开(公告)号：US20240145852A1

公开(公告)日：2024-05-02

申请号：US18408265

申请日：2024-01-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaoji WU ,  Shilong CHEN ,  Dan SHEN ,  Xiaobo CHEN

IPC: H01M50/358 ,  H01M50/209 ,  H01M50/249 ,  H01M50/271

CPC classification number: H01M50/358 ,  H01M50/209 ,  H01M50/249 ,  H01M50/271 ,  H01M2200/10 ,  H01M2200/20 ,  H01M2220/20

Abstract: A battery module includes a first guard and a plurality of battery cells. The plurality of battery cells are arranged along a first direction. One end of the battery cell in a second direction is provided with a pressure relief mechanism. The second direction is perpendicular to the first direction. The pressure relief mechanism is configured to release the internal pressure of the battery cell when the internal pressure or temperature of the battery cell reaches a threshold value. The first guard includes a first guarding portion covering the end of the plurality of battery cells provided with the pressure relief mechanism. A plurality of venting ports are provided on the first guarding portion, and the venting port and the pressure relief mechanism are provided in a staggered manner in the second direction.