Direct-current V2V electric vehicle charging and discharging device

The utility model discloses a direct current V2V electric vehicle charging and discharging device, which comprises a direct current discharging joint connected with a direct current discharging vehicle, V2V conversion equipment and a direct current charging conversion joint connected with a direct current charging vehicle, and is characterized in that the direct current discharging joint comprises a CC1 resistance detection circuit, a CC2 resistance detection circuit, a DC +/DC-loop, an A +/A-loop, an S +/S-loop, a resistor R2, a resistor R3 and a resistor R4; the V2V conversion equipment comprises a V2V controller, and a DC/DC converter, a resistor R1 and a resistor R1'which are used for boosting/reducing voltage, and by adopting the technical scheme, direct current charging and discharging between any two electric vehicles can be carried out by monitoring data parameters of the charging and discharging vehicles and adjusting boosting and reducing voltage; during direct-current charging and discharging, volt