{
  "$type": "site.standard.document",
  "description": "An insulation resistance detection system for an electric vehicle is used to detect a positive insulation resistance between a positive electrode of a battery of the electric vehicle and an equipment grounding point, and detect a negative insulation resistance between a negative electrode of the…",
  "path": "/patents/1326997",
  "publishedAt": "2022-09-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/52",
    "DELTA ELECTRONICS, INC."
  ],
  "textContent": "An insulation resistance detection system for an electric vehicle is used to detect a positive insulation resistance between a positive electrode of a battery of the electric vehicle and an equipment grounding point, and detect a negative insulation resistance between a negative electrode of the battery and the equipment grounding point. The insulation resistance detection system includes a negative detection circuit, a positive detection circuit, and a control unit. The control unit controls the negative detection circuit to be charged to generate a first capacitor voltage, and controls the positive detection circuit to be charged to generate a second capacitor voltage. The control unit determines whether the negative insulation resistance is abnormal according to the first capacitor voltage and a battery voltage of the battery, and determines whether the positive insulation resistance is abnormal according to the second capacitor voltage and the battery voltage.",
  "title": "INSULATION RESISTANCE DETECTION SYSTEM FOR ELECTRIC VEHICLE AND INSULATION RESISTANCE DETECTION METHOD THEREOF"
}