{
  "$type": "site.standard.document",
  "description": "Safety is improved by suppressing adverse effects caused by a high-temperature discharge gas ejected from a battery. In the battery pack, battery cell (1) including a discharge valve is housed in case (2), and flame-retardant cap (6) is disposed at a position facing discharge valve side end surface…",
  "path": "/patents/1415395",
  "publishedAt": "2025-04-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "PANASONIC ENERGY CO LTD [JP]"
  ],
  "textContent": "Safety is improved by suppressing adverse effects caused by a high-temperature discharge gas ejected from a battery. In the battery pack, battery cell (1) including a discharge valve is housed in case (2), and flame-retardant cap (6) is disposed at a position facing discharge valve side end surface (1a) of battery cell (1). Flame-retardant cap (6) includes collision plate (6A) disposed at a position facing discharge valve side end surface (1a) and wall (6B) formed around collision plate (6A), the discharge valve of the battery cell (1) and a region in proximity are arranged inside peripheral wall (6B), and reverse ejection gap (30) is provided between battery cell (1) and peripheral wall (6B). An expansion space of the discharge gas flowing in from reverse ejection gap (30) is provided inside case (2). In the expansion space, the discharge gas ejected from the discharge valve collides with collision plate (6A) of flame-retardant cap (6), and fills the expansion space via diffusion gap (28) and reverse ejection gap (30).",
  "title": "BATTERY PACK"
}