{
  "$type": "site.standard.document",
  "description": "Discussed are a method and an apparatus for diagnosing a battery cell. The method may include applying, by the apparatus for diagnosing the battery cell, an activation waveform having a predetermined frequency to the battery cell in an activation process, and performing an electrochemical impedance…",
  "path": "/patents/1392161",
  "publishedAt": "2025-12-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01N27/02",
    "LG ENERGY SOLUTION LTD [KR]"
  ],
  "textContent": "Discussed are a method and an apparatus for diagnosing a battery cell. The method may include applying, by the apparatus for diagnosing the battery cell, an activation waveform having a predetermined frequency to the battery cell in an activation process, and performing an electrochemical impedance spectroscopy (EIS) measurement in a charging section of the activation process. The method may further include, based on the EIS measurement, calculating a slope of a reactance of the battery cell in a voltage section of a predetermined range, and diagnosing the battery cell based on the slope.",
  "title": "METHOD AND APPARATUS FOR DIAGNOSING BATTERY CELL"
}