Automobile high-voltage power supply loop insulation detection method, circuit and system and automobile

• Main Authors: XIE ZHEFENG, GUO HONGJIANG, DENG LEI
• Format: Patent
• Language: Chinese; English
• Published: 11.10.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention relates to an automobile high-voltage power supply loop insulation detection method, circuit and system and an automobile. The high-voltage power supply loop comprises a power supply anode end interface, a power battery pack and a power supply cathode end interface, electrodes at two ends of the power battery pack are respectively connected with the power supply anode end interface and the power supply cathode end interface, a central point of the power battery pack is connected with one end of a measuring resistor, and the other end of the measuring resistor is grounded; the method comprises the following steps: acquiring a first leakage current measured by a first leakage current sensor and a second leakage current measured by a second leakage current sensor; the first leakage current sensor is connected with the power supply positive terminal interface and the central point. The second leakage current sensor is connected with the power supply negative terminal interface and the central point.