{
  "$type": "site.standard.document",
  "description": "The present application is applicable to the field of lithium battery technologies, and provides a new type of cap for a cylindrical lithium battery and a new type of cylindrical lithium battery. The new type of cap for the cylindrical lithium battery includes a steel sheet, an explosion-proof…",
  "path": "/patents/1342793",
  "publishedAt": "2023-05-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/143",
    "SHENZHEN BAK POWER BATTERY CO., LTD."
  ],
  "textContent": "The present application is applicable to the field of lithium battery technologies, and provides a new type of cap for a cylindrical lithium battery and a new type of cylindrical lithium battery. The new type of cap for the cylindrical lithium battery includes a steel sheet, an explosion-proof sheet, a connection piece, a spacer ring and a seal ring. The steel sheet is defined with a through hole. The explosion-proof disc is arranged on one side of the steel sheet, and the explosion-proof disc is provided with a wrap edge, and the wrap edge is extended from an edge of the steel sheet to another side of the steel sheet and then to an edge of the through hole. The middle portion of the connection piece is in contact with the middle portion of the explosion-proof disc. The spacer ring is arranged between the explosion-proof disc and the connection piece. The seal ring is arranged around the explosion-proof disc, the connection piece and the spacer ring. In the new type of cap for the cylindrical lithium battery of the present application, the steel cap is removed by defining a through hole on the steel sheet, and the wrap edge of the explosion-proof disc is extended to the edge of the through hole on the steel sheet, thereby reducing the resistance of the cap when the cap is in use. At the same time, a larger explosion venting area is formed at the through hole, when the internal pressure of the battery becomes too high, the notch on the explosion-proof disc will he broken, then the explosion-proof disc is broken, and the air flow will escape from the through hole of the steel sheet to ensure the safety of the battery.",
  "title": "NEW TYPE OF CAP FOR CYLINDRICAL LITHIUM BATTERY AND NEW TYPE OF CYLINDRICAL LITHIUM BATTERY"
}