{
  "$type": "site.standard.document",
  "description": "An electrode group includes a positive electrode and a negative electrode wound together with a separator. The positive electrode includes a band-shaped current collector having a long side and a short side, a positive mixture layer applied parallel to the long side, a non-coated portion without…",
  "path": "/patents/1380541",
  "publishedAt": "2026-04-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0587",
    "KABUSHIKI KAISHA TOSHIBA"
  ],
  "textContent": "An electrode group includes a positive electrode and a negative electrode wound together with a separator. The positive electrode includes a band-shaped current collector having a long side and a short side, a positive mixture layer applied parallel to the long side, a non-coated portion without the mixture, and an insulating portion covering the interface between the coated and non-coated areas. The negative electrode also has a band-shaped current collector and a negative mixture layer applied parallel to its long side. The insulating portion includes a first region covering part of the non-coated area and a second region covering part of the positive mixture layer. An end of the negative mixture layer, which extends parallel to its long side, is positioned to face the second region of the insulating portion.",
  "title": "ELECTRODE GROUP AND SECONDARY BATTERY"
}