{
  "$type": "site.standard.document",
  "description": "The battery diagnosis method includes calculating, by a battery management system (BMS), a plurality of direct current internal resistances (DCIRs) respectively with respect to a plurality of battery cells based on a plurality of cell voltages and a plurality of cell currents respectively with…",
  "path": "/patents/1395323",
  "publishedAt": "2026-02-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R27/08",
    "LG ENERGY SOLUTION LTD [KR]"
  ],
  "textContent": "The battery diagnosis method includes calculating, by a battery management system (BMS), a plurality of direct current internal resistances (DCIRs) respectively with respect to a plurality of battery cells based on a plurality of cell voltages and a plurality of cell currents respectively with respect to a plurality of battery cells connected in parallel, deriving, by the BMS, an entire representative value of the plurality of DCIRs based on the plurality of DCIRs, calculating, by the BMS, a multi-parallel ideality factor based on a parallel connection number which is a number of the plurality of battery cells connected in parallel, calculating, by the BMS, a dispersion of the DCIRs based on the plurality of DCIRs and the entire representative values of the DCIRs, calculating, by the BMS, an upper limit threshold value of a normal range based on the entire representative value of the DCIRs, the multi-parallel ideality factor, and the dispersion of the DCIRs, and deriving, by the BMS, the normal range based on the upper limit threshold value, and diagnosing a state of a battery pack including the plurality of battery cells according to the normal range.",
  "title": "BATTERY DIAGNOSIS METHOD AND BATTERY SYSTEM APPLYING THE SAME"
}