{
  "$type": "site.standard.document",
  "description": "According to a method of estimating a state of charge of a battery (110), a present voltage value Vt(k) and a present current value IL(k) are generated by detecting the voltage and current of the battery. A reference open-circuit voltage value VOC,ref(k) is determined based on a state-of-charge…",
  "path": "/patents/1395444",
  "publishedAt": "2025-12-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R19/16528",
    "POSTECH RES & BUSINESS DEV FOUND [KR]"
  ],
  "textContent": "According to a method of estimating a state of charge of a battery (110), a present voltage value Vt(k) and a present current value IL(k) are generated by detecting the voltage and current of the battery. A reference open-circuit voltage value VOC,ref(k) is determined based on a state-of-charge estimation value SOC(k). First to third parameter values α1(k), α2(k), and α3(k) are estimated by using recursive least squares (RLS), from the present voltage value Vt(k), the reference open-circuit voltage value VOC,ref(k), the present current value IL(k), and a previous current value IL(k-1). A next state-of-charge estimation value SOC(k+1) of the battery is determined by using an extended Kalman filter (EKF), from the state-of-charge estimation value SOC(k), the present voltage value Vt(k), the reference open-circuit voltage value VOC,ref(k), the present current value IL(k), the previous current value IL(k-1), and the first to third parameter values α1(k), α2(k), and α3(k).",
  "title": "METHOD AND DEVICE FOR ESTIMATING STATE OF CHARGE OF A BATTERY"
}