{
  "$type": "site.standard.document",
  "description": "There are implemented a method which allows a present state of charge to be precisely estimated not only for a new battery, but also for a lead accumulator that has deteriorated with the lapse of a certain period since fist use thereof, and a lead accumulator which can be increased in lifetime and…",
  "path": "/patents/999258",
  "publishedAt": "2012-08-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/367",
    "SHIN KOBE ELECTRIC MACHINERY [JP]"
  ],
  "textContent": "There are implemented a method which allows a present state of charge to be precisely estimated not only for a new battery, but also for a lead accumulator that has deteriorated with the lapse of a certain period since fist use thereof, and a lead accumulator which can be increased in lifetime and reduced in cost using information on the precisely determined state of charge. An accumulator device includes an accumulator, a terminal voltage measurement unit for measuring a terminal voltage of the accumulator, a current measurement unit for measuring a current flowing in the accumulator, multi-dimensional characteristic models in which a plurality of relational models each between the measured terminal voltage, current and the state of charge are prepared for each of deterioration degrees, a deterioration degree estimation unit for estimating a present deterioration degree of the accumulator, a corresponding model selective determination unit for selectively determining, based on the deterioration degree determined by the deterioration degree estimation unit, a corresponding model from among the multi-dimensional characteristic models, and a state of charge estimation unit for estimating the present state of charge using the model selectively determined by the corresponding model selective determination unit.",
  "title": "STORAGE BATTERY DEVICE, STORAGE BATTERY STATE OF CHARGE EVALUATION DEVICE AND METHOD"
}