{
  "$type": "site.standard.document",
  "description": "There is provided a battery pack system with enhanced estimation accuracies of a polarization voltage and a remaining capacity of a secondary battery. A polarization voltage calculation section 108 calculates a polarization voltage Vpol from a filtered variation LPF (ΔQ) of an accumulated capacity…",
  "path": "/patents/1083828",
  "publishedAt": "2004-09-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L3/0046",
    "PANASONIC EV ENERGY CO LTD [JP]"
  ],
  "textContent": "There is provided a battery pack system with enhanced estimation accuracies of a polarization voltage and a remaining capacity of a secondary battery. A polarization voltage calculation section 108 calculates a polarization voltage Vpol from a filtered variation LPF (ΔQ) of an accumulated capacity with reference to a look-up table (LUT) 1081. An electromotive force calculation section 113 subtracts the polarization voltage Vpol from an effective no-load voltage V0to determine a battery electromotive force Veq. A remaining capacity estimation section 114 estimates a remaining capacity SOC from the battery electromotive force Veq with reference to a look-up table (LUT) 1141.",
  "title": "METHOD FOR ESTIMATING POLARIZATION VOLTAGE OF SECONDARY CELL, METHOD AND DEVICE FOR ESTIMATING REMAINING CAPACITY OF SECONDARY CELL, BATTERY PACK SYSTEM, AND ELECTRIC VEHICLE"
}