{
  "$type": "site.standard.document",
  "description": "The purpose of the present invention is to provide a cylindrical battery wherein a central part of a sealing plate which is fixed by swaging to an opening of an external packaging can is configured to be warped inward of the battery. The cylindrical battery according to one embodiment of the…",
  "path": "/patents/1416015",
  "publishedAt": "2025-10-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "PANASONIC ENERGY CO LTD [JP]"
  ],
  "textContent": "The purpose of the present invention is to provide a cylindrical battery wherein a central part of a sealing plate which is fixed by swaging to an opening of an external packaging can is configured to be warped inward of the battery. The cylindrical battery according to one embodiment of the present invention is provided with: an electrode body in which a positive electrode plate and a negative electrode plate are rolled with a separator being disposed therebetween; an electrolytic solution; an external packaging can which has a bottomed cylindrical shape and which houses the electrode body and the electrolytic solution; and a sealing plate (22) which is fixed by swaging to an opening of the external packaging can with a gasket therebetween. As viewed in a planar view, the sealing plate (22) is formed to have a circular shape, and has a central part (22a) recessed inward of the battery. In the sealing plate (22), an outer circumferential edge (27) fixed by swaging to the external packaging can is configured to bifurcate into a first portion (27a) and a second portion (27b) in the thickness direction.",
  "title": "A METHOD FOR MANUFACTURING A CYLINDRICAL BATTERY"
}