Thermal runaway monitoring device for vehicle power battery pack

The utility model relates to a thermal runaway monitoring device for a vehicle power battery pack, belongs to the field of battery thermal runaway protection, and solves the problems of poor reliability, low sensitivity and low accuracy of the conventional monitoring device. Comprising a PCB packaged in a shell, and a processor, a sensor module, a communication module, an alarm module and a power supply circuit which are integrated on the PCB, a socket is arranged outside the shell and is connected with a vehicle master control system through a cable; one end of the power supply circuit is electrically connected with the socket, and the other end is connected with each module for supplying power; the sensor module is electrically connected with the processor and comprises a CO sensor, a smoke sensor, an air pressure sensor, an infrared light sensor module and a temperature sensor; the alarm module is electrically connected with a first input/output port of the processor; a second input/output port of the proc