A high voltage interlock circuit, comprising: a power module, wherein a positive electrode of the power module is connected to one end of a current generating module; the current generating module, wherein the other end of the current generating module is connected to a first terminal of a high voltage component module to inject a constant direct current current into the high voltage component module; a first voltage dividing module, wherein one end of the first voltage dividing module is connected to a second terminal of the high voltage component module, and the other end of the first voltage dividing module is respectively connected to a negative electrode of the power module and a power ground; and a processing module configured to determine a fault of the high voltage component module based on a first voltage collected from the second terminal of the high voltage component module and a second voltage collected from the first terminal of the high voltage component module, characterized in that the processing module is further configured to: determine that the fault of the high voltage component module is an open circuit, when the first voltage is less than a third preset threshold and the second voltage is greater than a fourth preset threshold; determine that the fault of the high voltage component module is a short circuit to power supply, when the first voltage is greater than a fifth preset threshold and the second voltage is greater than the fifth preset threshold; and determine that the fault of the high voltage component module is a short circuit to the power ground when the first voltage is less than a sixth preset threshold and the second voltage is less than the sixth preset threshold; wherein the fourth preset threshold and the fifth preset threshold are both determined based on the DC current, a resistance value of the first voltage dividing module, and a resistance value of the high voltage component module, and the third preset threshold and the sixth preset threshold are both determined based on the DC current and the resistance value of the first voltage dividing module. a power module, wherein a positive electrode of the power module is connected to one end of a current generating module; the current generating module, wherein the other end of the current generating module is connected to a first terminal of a high voltage component module to inject a constant direct current current into the high voltage component module; a first voltage dividing module, wherein one end of the first voltage dividing module is connected to a second terminal of the high voltage component module, and the other end of the first voltage dividing module is respectively connected to a negative electrode of the power module and a power ground; and a processing module configured to determine a fault of the high voltage component module based on a first voltage collected from the second terminal of the high voltage component module and a second voltage collected from the first terminal of the high voltage component module, characterized in that the processing module is further configured to: determine that the fault of the high voltage component module is an open circuit, when the first voltage is less than a third preset threshold and the second voltage is greater than a fourth preset threshold; determine that the fault of the high voltage component module is a short circuit to power supply, when the first voltage is greater than a fifth preset threshold and the second voltage is greater than the fifth preset threshold; and determine that the fault of the high voltage component module is a short circuit to the power ground when the first voltage is less than a sixth preset threshold and the second voltage is less than the sixth preset threshold; determine that the fault of the high voltage component module is an open circuit, when the first voltage is less than a third preset threshold and the second voltage is greater than a fourth preset threshold; determine that the fault of the high voltage component module is a short circuit to power supply, when the first voltage is greater than a fifth preset threshold and the second voltage is greater than the fifth preset threshold; and determine that the fault of the high voltage component module is a short circuit to the power ground when the first voltage is less than a sixth preset threshold and the second voltage is less than the sixth preset threshold; wherein the fourth preset threshold and the fifth preset threshold are both determined based on the DC current, a resistance value of the first voltage dividing module, and a resistance value of the high voltage component module, and the third preset threshold and the sixth preset threshold are both determined based on the DC current and the resistance value of the first voltage dividing module.