High-voltage interlocking device and method for detecting the high-voltage interlocking device

A high-voltage interlocking device detection method, applicable to a high-voltage interlocking device comprising:

• a first resistance module, an end of the first resistance module being connected to a first connection end of a first switch module, a first connection end of a high-voltage component under detection, and an end of a second resistance module, respectively, and another end of the first resistance module being connected to a first power terminal;
• the first switch module, a second connection end of the first switch module being connected to a first reference potential through a third resistance module, and a control terminal of the first switch module being configured to receive a first driving signal to enable the first switch module to be turned on or off according to the first driving signal;
• the second resistance module, another end of the second resistance module being connected to a second reference potential;
• a fourth resistance module, an end of the fourth resistance module being connected to another end of the high-voltage component under detection and a first connection end of a second switch module, and another end of the fourth resistance module being connected to a second power terminal;
• the second switch module, a second connection end of the second switch module being connected to a third reference potential through a fifth resistance module, and a control terminal of the second switch module being configured to receive a second driving signal to enable the second switch module to be turned on or off according to the second driving signal;
• a fault detection module, configured to determine a fault of the high-voltage component under detection according to a first detection signal obtained from the first connection end of the high-voltage component under detection, wherein the fault of the high-voltage component under detection comprises a short power supply fault, an open-circuit fault or a short-ground fault,
• wherein an on-off state of the first switch module is opposite to an on-off state of the second switch module, when the first switch module is turned on, power of the high-voltage interlocking device is supplied by the second power terminal, and when the second switch module is turned on, the power of the high-voltage interlocking device is supplied by the first power terminal,
• the method comprising:
• obtaining, by the fault detection module, the first detection signal from the end of the second resistance module;
• and
• determining, by the fault detection module, the fault of the high-voltage component under detection according to the first detection signal;
• wherein the fault of the high-voltage component under detection comprises any of a short power supply fault, an open-circuit fault or a short-ground fault.