{
  "$type": "site.standard.document",
  "description": "This application relates to the technical field of energy storage devices, and in particular, to a cover assembly of a secondary battery and a secondary battery. The cover assembly includes a cover plate with an air hole; a blocker extending into and blocking the air hole; a sealing member disposed…",
  "path": "/patents/1424040",
  "publishedAt": "2023-08-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/148",
    "CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]"
  ],
  "textContent": "This application relates to the technical field of energy storage devices, and in particular, to a cover assembly of a secondary battery and a secondary battery. The cover assembly includes a cover plate with an air hole; a blocker extending into and blocking the air hole; a sealing member disposed between the blocker and the cover plate, surrounding the air hole, and configured to seal a gap between the blocker and the cover plate; and a fastener disposed inside the air hole, wherein the fastener is connected to the cover plate, the blocker is connected to the cover plate through the fastener, and the fastener is configured to get deformed in response to a temperature rise, so that the blocker exits a state of blocking the air hole. According to the cover assembly of a secondary battery and the secondary battery provided in embodiments of this application, the blocker no longer blocks the air hole as a temperature inside a housing rises, so as to discharge gas from the housing through the air hole. In this way, the secondary battery can be prevented from an explosion because of reduced air pressure inside the housing, while partial heat can be taken away through gas discharge, thereby slowing down thermal runaway in the secondary battery.",
  "title": "COVER ASSEMBLY OF SECONDARY BATTERY AND SECONDARY BATTERY"
}