{
  "$type": "site.standard.document",
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  "description": "A degradation-determination system includes at least four strain gauges that are installed on a principal surface of a lithium-ion battery and each of which is configured to detect pressure of a battery surface at a corresponding installation position, and a degradation determining unit configured…",
  "path": "/patents/1422405",
  "publishedAt": "2025-04-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01L1/205",
    "MINEBEA MITSUMI INC [JP]"
  ],
  "textContent": "A degradation-determination system includes at least four strain gauges that are installed on a principal surface of a lithium-ion battery and each of which is configured to detect pressure of a battery surface at a corresponding installation position, and a degradation determining unit configured to determine degradation of the lithium-ion battery based on measured values at the strain gauges. The degradation determining unit is configured to estimate a maximum expansion position where volume expansion is maximal in a region defined by the strain gauges, of the surface of the lithium-ion battery.",
  "title": "DEGRADATION DETERMINATION SYSTEM AND DEGRADATION DETERMINATION METHOD FOR SECONDARY BATTERY"
}