DETECTION CIRCUIT AND DETECTION METHOD FOR ELECTRIC CONTROL DEVICE, AND ELECTRIC VEHICLE

Embodiments of this application relate to the technical field of electronics, and disclose an electrical control device detection circuit, a detection method, and an electric vehicle. In some embodiments of this application, the detection circuit includes a drive circuit configured to detect an electrical control device. The drive circuit includes a drive power module, a high-side switch unit, and a low-side switch unit. The detection circuit includes: a detection power module, a first switch module, a second switch module, a first detection module, a second detection module, and a control module. The control module is configured to obtain an electrical signal at a third end of the first detection module and/or an electrical signal at a second end of the second detection module; and determine, based on the electrical signal at the third end of the first detection module and/or the electrical signal at the second end of the second detection module, whether a fault occurs in the drive circuit of the electrical control device. In this implementation, fault diagnosis can be performed on the drive circuit of the electrical control device.