Electric vehicle SOC accurate electric quantity calculation system

The utility model discloses an electric vehicle SOC accurate electric quantity calculation system, which comprises an instrument display module, a controller assembly, a battery assembly and a charger assembly, the charger assembly is electrically connected with the instrument display module and the controller assembly respectively, and the controller assembly is electrically connected with the instrument display module and the battery assembly respectively. The controller assembly comprises a microcontroller MCU and an acquisition circuit, and further comprises a voltage and current acquisition module and an SOC calculation module, the voltage and current acquisition module is located on the controller assembly and multiplexes the microcontroller MCU and the acquisition circuit, the voltage and current acquisition module acquires parameters of the battery assembly, and the SOC calculation module calculates the SOC of the battery assembly. The SOC calculation module is arranged on the controller assembly or t