{
  "$type": "site.standard.document",
  "description": "In a deterioration determination system, a data obtainment unit obtains battery data. A SOH identification unit identifies a state of health (SOH) of a secondary battery on the basis of the battery data. A regression curve generation unit generates a deterioration regression curve of the secondary…",
  "path": "/patents/1391590",
  "publishedAt": "2025-10-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L58/16",
    "PANASONIC IP MAN CO LTD [JP]"
  ],
  "textContent": "In a deterioration determination system, a data obtainment unit obtains battery data. A SOH identification unit identifies a state of health (SOH) of a secondary battery on the basis of the battery data. A regression curve generation unit generates a deterioration regression curve of the secondary battery by performing curve regression on a plurality of SOHs of the secondary battery that have been identified in time series. A reference point setting unit sets a reference point on the deterioration regression curve. By performing linear regression on the plurality of SOHs obtained after the reference point, a regression line generation unit generates a deterioration regression line of the secondary battery that follows the reference point. A slope ratio calculation unit calculates a slope ratio between a slope of a tangent line to the deterioration regression curve at the reference point and a slope of the deterioration regression line following the reference point. A sudden deterioration determination unit determines sudden deterioration of the secondary battery on the basis of the slope ratio.",
  "title": "DETERIORATION DETERMINATION SYSTEM, DETERIORATION DETERMINATION METHOD, AND DETERIORATION DETERMINATION PROGRAM"
}