{
  "$type": "site.standard.document",
  "description": "Disclosed is a technology capable of effectively diagnosing a battery with high accuracy using a Nyquist diagram. The battery diagnosing apparatus includes an impedance measuring module configured to measure an impedance according to a change of frequency while applying an AC voltage to a target…",
  "path": "/patents/1397915",
  "publishedAt": "2025-11-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R23/02",
    "LG ENERGY SOLUTION LTD [KR]"
  ],
  "textContent": "Disclosed is a technology capable of effectively diagnosing a battery with high accuracy using a Nyquist diagram. The battery diagnosing apparatus includes an impedance measuring module configured to measure an impedance according to a change of frequency while applying an AC voltage to a target battery; a memory module configured to store an impedance reference value per frequency; and a processor configured to generate a Nyquist diagram for the impedance measurement value of the target battery measured by the impedance measuring module, extract an inflection point from the generated Nyquist diagram, and compare a value within a predetermined frequency range centering around the extracted inflection point with the impedance reference value per frequency stored in the memory module to diagnose the target battery.",
  "title": "BATTERY DIAGNOSING APPARATUS AND METHOD"
}