公开(公告)号：US20220140432A1

公开(公告)日：2022-05-05

申请号：US17578343

申请日：2022-01-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaobo Chen ,  Xianda Li ,  Shaoji Wu ,  Ting Li

IPC: H01M50/342 ,  H01M50/209 ,  H01M50/383 ,  H01M10/613

Abstract: Embodiments of this application provide an explosion-proof valve, a battery pack, and an apparatus. The explosion-proof valve includes a flame arresting member and an air permeable membrane. The flame arresting member is configured to connect to a housing of a battery pack, the air permeable membrane is fastened to the flame arresting member, and the battery pack is capable of exchanging gas with the outside through the flame arresting member and the air permeable membrane in sequence. During use of the explosion-proof valve of this application in the battery pack of this application, when thermal runaway occurs inside the housing of the battery pack, pressure inside the housing is suddenly increased, and as a result, the battery pack releases the pressure through the explosion-proof valve, and high-temperature runaway gas impacts and melts the air permeable membrane, forming a smooth air flow channel.