{
  "$type": "site.standard.document",
  "description": "A battery state estimating unit (110) estimates an internal state of a secondary battery in accordance with a battery model equation in every arithmetic cycle, and estimates a charging rate (SOC) and a battery current based on a result of the estimation. A parameter estimating unit (130) obtains a…",
  "path": "/patents/1012723",
  "publishedAt": "2011-05-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/367",
    "TOYOTA CHUO KENKYUSHO KK [JP]"
  ],
  "textContent": "A battery state estimating unit (110) estimates an internal state of a secondary battery in accordance with a battery model equation in every arithmetic cycle, and estimates a charging rate (SOC) and a battery current based on a result of the estimation. A parameter estimating unit (130) obtains a battery current (Ib) measured by a sensor as well as the charging rate (SOC) and the battery current (I te ) estimated by the battery state estimating unit (110). The parameter estimating unit (130) estimates a capacity deterioration parameter such that a rate of change in difference (estimation error) between a summed value of an actual current and a summed value of an estimated current with respect to the charging rate (SOC) is minimized. A result obtained by estimating the capacity deterioration parameter is reflected in the battery model by the battery state estimating unit (110).",
  "title": "STATE ESTIMATING DEVICE FOR SECONDARY BATTERY"
}