{
  "$type": "site.standard.document",
  "description": "A battery degradation determination device includes a fitting module configured to fit AC impendance measurement data into an equivalent circuit model including at least one circuit block in which a resistance and a constant phase element are connected in parallel, and to obtain circuit constants…",
  "path": "/patents/993287",
  "publishedAt": "2013-01-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R16/04",
    "YOKOGAWA ELECTRIC CORP [JP]"
  ],
  "textContent": "A battery degradation determination device includes a fitting module configured to fit AC impendance measurement data into an equivalent circuit model including at least one circuit block in which a resistance and a constant phase element are connected in parallel, and to obtain circuit constants in the equivalent circuit model, a P-value saving module configured to save P values being index of the constant phase element obtained by fitting AC impedance measurement data of a reference battery to the equivalent circuit model, and a degradation determination module configured to perform degradation determination for a battery as a determination target based on circuit constants obtained by fitting AC impedance measurement data of the battery as a determination target to the equivalent circuit model with the use of the P values as fixed values, with reference to correlations between degrees of battery degradation and the circuit constants in the equivalent circuit model.",
  "title": "Device, method and system for determining battery degradation"
}