{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "Provided is a technique to prevent formation of a gap between a case body and a sealing plate. The battery case (41) disclosed herein includes: a case body (41a) having an opening (41a1); and a substantially rectangular sealing plate (41b) attached to the opening (41a1). The sealing plate (41b) has…",
  "path": "/patents/1397041",
  "publishedAt": "2025-07-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/103",
    "PRIME PLANET ENERGY & SOLUTIONS INC [JP]"
  ],
  "textContent": "Provided is a technique to prevent formation of a gap between a case body and a sealing plate. The battery case (41) disclosed herein includes: a case body (41a) having an opening (41a1); and a substantially rectangular sealing plate (41b) attached to the opening (41a1). The sealing plate (41b) has a pair of long side portions (91, 92), a pair of short side portions (93, 94), and R portions (95 - 98) at four corners. An edge of a lower surface (41b2) of the sealing plate (41b) is chamfered. A chamfering amount of the short side portions (93, 94) is greater than a chamfering amount of the long side portions (91, 92). Each the R portions (95 - 98) comprises a gradual change region (962), where a chamfering amount gradually decreases from a first end (P1) on a side of the short side portions (93, 94) toward a second end (P2) on a side of the long side portions (91, 92).",
  "title": "BATTERY CASE AND SECONDARY BATTERY INCLUDING THE SAME"
}