{
  "$type": "site.standard.document",
  "description": "A method and apparatus for detecting lithium plating, and a method and apparatus for obtaining a polarization proportion are provided, and belong to the field of rechargeable battery technologies. The method includes: obtaining an open-circuit voltage of a rechargeable battery and a negative…",
  "path": "/patents/1402624",
  "publishedAt": "2025-07-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/364",
    "HUAWEI TECH CO LTD [CN]"
  ],
  "textContent": "A method and apparatus for detecting lithium plating, and a method and apparatus for obtaining a polarization proportion are provided, and belong to the field of rechargeable battery technologies. The method includes: obtaining an open-circuit voltage of a rechargeable battery and a negative electrode open-circuit voltage of the rechargeable battery based on a state of charge of the rechargeable battery (205); obtaining a negative electrode polarization voltage of the rechargeable battery based on the open-circuit voltage of the rechargeable battery, a terminal voltage of the rechargeable battery, and a polarization proportion of the rechargeable battery (206), where the polarization proportion of the rechargeable battery represents a proportion that is of a negative electrode polarization voltage of the rechargeable battery to a polarization voltage of the rechargeable battery and that is obtained when the rechargeable battery is at a lithium plating critical point; obtaining a negative electrode voltage of the rechargeable battery based on the negative electrode open-circuit voltage of the rechargeable battery and the negative electrode polarization voltage of the rechargeable battery (207); and determining, based on the negative electrode voltage of the rechargeable battery, whether lithium plating occurs in the rechargeable battery (208). This method improves accuracy of lithium plating detection.",
  "title": "LITHIUM PLATING DETECTION METHOD AND APPARATUS"
}