{
  "$type": "site.standard.document",
  "description": "A lithium ion secondary battery (10) includes: an electrode assembly (30) including a positive electrode plate (14), a negative electrode plate (18), and a separator (15), and wound into a flat shape; and an elastic member (21) having porosity and incorporated inside the outermost of the electrode…",
  "path": "/patents/995984",
  "publishedAt": "2012-11-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "A lithium ion secondary battery (10) includes: an electrode assembly (30) including a positive electrode plate (14), a negative electrode plate (18), and a separator (15), and wound into a flat shape; and an elastic member (21) having porosity and incorporated inside the outermost of the electrode assembly (30) and into a corner portion (31) of the electrode assembly (30) in the winding direction. The elastic member (21) is formed of a foam of at least one material selected from the group consisting of polyethylene, polypropylene, and polyurethane, for example.",
  "title": "LITHIUM ION SECONDARY BATTERY AND PRODUCTION METHOD FOR SAME"
}