{
  "$type": "site.standard.document",
  "description": "A nonaqueous electrolyte secondary battery that is an example of an embodiment includes a flat electrode body that has a winding structure in which a positive electrode and a negative electrode are wound with a separator interposed in between, in which flat portions and bend portions are formed in…",
  "path": "/patents/1245290",
  "publishedAt": "2019-10-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0587",
    "SANYO Electric Co., Ltd."
  ],
  "textContent": "A nonaqueous electrolyte secondary battery that is an example of an embodiment includes a flat electrode body that has a winding structure in which a positive electrode and a negative electrode are wound with a separator interposed in between, in which flat portions and bend portions are formed in the flat electrode body. A negative electrode mixture layer is provided in the negative electrode to a winding outer end thereof. The negative electrode includes an extension portion that extends out from a winding outer end of the positive electrode towards a winding direction outer side. A length L of the extension portion in a winding direction satisfies a condition L/((a−b)×2+bπ)>0.135, where a is a width of the electrode body and b is a thickness of the electrode body.",
  "title": "NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY"
}