{
  "$type": "site.standard.document",
  "description": "An electrode group 1 which is formed by winding a positive electrode and a negative electrode into a flat shape with a separator interposed therebetween is contained in a rectangular battery case 4. The positive electrode has a tensile strength of 15 N/cm or lower when the positive electrode has a…",
  "path": "/patents/1008103",
  "publishedAt": "2011-11-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0431",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "An electrode group 1 which is formed by winding a positive electrode and a negative electrode into a flat shape with a separator interposed therebetween is contained in a rectangular battery case 4. The positive electrode has a tensile strength of 15 N/cm or lower when the positive electrode has a tensile extension of 1%, and the positive electrode has a tensile extension of 3% or higher when the positive electrode breaks. A gap S between a longitudinal end of the electrode group 1 and an inner surface of a short side of the rectangular battery case 4 meets the expression: S¥ 1/8 (L × ±) where L is a longitudinal length of the electrode group, and ± is a tensile extension of the positive electrode when the positive electrode breaks.",
  "title": "NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR"
}