{
  "$type": "site.standard.document",
  "description": "A secondary battery includes a flat wound electrode body in which an electrode sheet is wound, and an electrode terminal. The electrode sheet has a current collector, an electrode active material layer which is formed on a surface of the current collector, and a non-formation portion in which the…",
  "path": "/patents/1313342",
  "publishedAt": "2022-03-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0585",
    "Prime Planet Energy & Solutions, Inc."
  ],
  "textContent": "A secondary battery includes a flat wound electrode body in which an electrode sheet is wound, and an electrode terminal. The electrode sheet has a current collector, an electrode active material layer which is formed on a surface of the current collector, and a non-formation portion in which the electrode active material layer is not formed on the surface of the current collector. The wound electrode body has a first end portion in which a rounded portion is formed. A first slit is formed along a winding direction in the non-formation portion at the first end portion. A flat surface portion to which the electrode terminal is joined is provided in a portion positioned further toward opposite than the first slit from the electrode active material layer in a portion of the non-formation portion at the first end portion.",
  "title": "SECONDARY BATTERY"
}