{
  "$type": "site.standard.document",
  "description": "A secondary battery includes a cylindrical case, an electrode assembly accommodated in the cylindrical case, and a cap plate electrically connected to the electrode assembly and configured to seal the cylindrical case, wherein the cap plate includes a first flat portion at a center thereof, a…",
  "path": "/patents/1377665",
  "publishedAt": "2025-12-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/533",
    "SAMSUNG SDI CO., LTD."
  ],
  "textContent": "A secondary battery includes a cylindrical case, an electrode assembly accommodated in the cylindrical case, and a cap plate electrically connected to the electrode assembly and configured to seal the cylindrical case, wherein the cap plate includes a first flat portion at a center thereof, a second flat portion outside the first flat portion, and a connecting portion between the first flat portion and the second flat portion, and wherein a height of a top surface of the first flat portion is higher than a height of a top surface of the second flat portion.",
  "title": "SECONDARY BATTERY"
}