{
  "$type": "site.standard.document",
  "description": "A battery system includes a battery that is a lithium ion battery including an electrode assembly containing a positive electrode active material. An ECU calculates a deterioration index value ED corresponding a degree of progress of high rate deterioration, and when the deterioration index value…",
  "path": "/patents/1294567",
  "publishedAt": "2021-07-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/4257",
    "TOYOTA JIDOSHA KABUSHIKI KAISHA"
  ],
  "textContent": "A battery system includes a battery that is a lithium ion battery including an electrode assembly containing a positive electrode active material. An ECU calculates a deterioration index value ED corresponding a degree of progress of high rate deterioration, and when the deterioration index value ED exceeds a threshold value, controls a power converter or a PCU to cause a voltage of the battery to fall within a voltage range including a specific voltage. The specific voltage is a peak voltage on a dQ/dV voltage characteristic curve, the peak voltage being derived from structural change of the positive electrode active material. The dQ/dV voltage characteristic curve is a curve indicating a relationship between dQ/dV that is a ratio of a change dQ of a stored electricity amount to a change dV of the voltage of the battery, and the voltage of the battery.",
  "title": "BATTERY SYSTEM AND METHOD FOR CONTROLLING LITHIUM ION BATTERY"
}