{
  "$type": "site.standard.document",
  "description": "There is provided a lead-acid battery in which the joint state between a lid body and a lid body cover can be checked based on both the joint state between a protruding portion in the periphery of a second exhaust hole and a joining portion of the lid body cover, and the joint state between a…",
  "path": "/patents/1013161",
  "publishedAt": "2011-05-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/10",
    "GS YUASA INT LTD [JP]"
  ],
  "textContent": "There is provided a lead-acid battery in which the joint state between a lid body and a lid body cover can be checked based on both the joint state between a protruding portion in the periphery of a second exhaust hole and a joining portion of the lid body cover, and the joint state between a protruding portion of the lid body and a joining portion of the lid body cover. The lead-acid battery comprises: a container having at least one cell chamber; a lid body 1 for covering a top opening of the container, the lid body 1 having on a top surface a recessed portion 4, the recessed portion 4 having therein an annular protruding portion 4C protruding upward and having, in an area of a bottom wall inside the protruding portion, an exhaust hole 4D for exhausting gas from the cell chamber, wherein a guide passage for guiding gas from the exhaust hole 4D to the outside is formed by joining the protruding portion 4C with a joining portion provided on the lid body cover; an annular groove 4M formed between the protruding portion and the vertical wall is covered with an outer periphery of the lid body cover 5; and the guide passage is isolated from the groove 4M.",
  "title": "LEAD STORAGE BATTERY"
}