Detecting device for connection status of battery circuit connector of electric vehicle

The utility model relates to a detecting device for connection status of a battery circuit connector of an electric vehicle, which aims at detecting the connection status of the battery circuit connector of the electric vehicle. The detecting device comprises a circuit connector pin (1), a circuit connector slot (2), a heat sensor (3) and a signal processing system (4), wherein the heat sensor (3) is fixed on the outer side of the circuit connector slot (2) and used for detecting the temperature of the circuit connector through a heat conduction mode; and the signal output end of the heat sensor (3) is connected with the signal processing system (4) which uses an output signal (5) of the heat sensor as an input signal to detect the connection status of the circuit connector pin (1) and the circuit connector slot (2).