{
  "$type": "site.standard.document",
  "description": "A method of manufacturing a power storage device includes: producing an electrode assembly (200) having a first electrode tab group (220); and forming a joining portion at which first electrode tabs (230) in the first electrode tab group (220) are joined together by applying vibration to the first…",
  "path": "/patents/1390128",
  "publishedAt": "2026-06-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B23K20/106",
    "PRIME PLANET ENERGY & SOLUTIONS INC [JP]"
  ],
  "textContent": "A method of manufacturing a power storage device includes: producing an electrode assembly (200) having a first electrode tab group (220); and forming a joining portion at which first electrode tabs (230) in the first electrode tab group (220) are joined together by applying vibration to the first electrode tab group (220) by a horn (10) in a state in which the first electrode tab group (220) is sandwiched between the horn (10) and an anvil (20) in a stacking direction of the first electrode tabs (230), wherein a line-shaped protuberance (11) is provided in a surface of one of the horn (10) and the anvil (20), the surface being to be in abutment with a first outer surface of the first electrode tab group (220), and in the forming the joining portion, the vibration is applied in a state in which the line-shaped protuberance (11) is in abutment with the first outer surface of the first electrode tab group (220).",
  "title": "POWER STORAGE DEVICE AND METHOD OF MANUFACTURING SAME"
}