Fault detection device for charging module of portable charging pile

The utility model discloses a fault detection device for a charging module of a portable charging pile, and belongs to a fault detection device. Comprising a power supply module which is connected with a charging pile charging module through a wire interface and is used for providing input voltage for the charging pile charging module; the signal generator module generates a plurality of square waves with different frequencies, is connected with a plurality of driving circuits of the charging pile charging module through a plurality of signal interfaces, and ensures that the charging pile charging module works according to a specific working mode; the fault detection module comprises a data acquisition module and a data analysis module, and the data acquisition module comprises a data input interface and is used for being connected with a key pin position of a charging pile charging module and acquiring corresponding voltage data; the data analysis module comprises a microcontroller and a display screen, and