Charging and discharging control system, method and device and control equipment

Abstract

The invention discloses a charging and discharging control system, method and device, control equipment and a computer storage medium. The charging and discharging control system comprises a bidirectional charging device and a processing module. The bidirectional charging device comprises an AC connector, a first bidirectional AC/DC conversion module and an energy storage voltage stabilization module which are connected in sequence. The processing module is connected with the first bidirectional AC/DC conversion module; when the processing module receives a discharging stopping instruction, the discharging stopping module stops discharging; the first bidirectional AC/DC conversion module is not directly stopped to stop working; the reverse function is opened; the function mode of the firstbidirectional AC/DC conversion module is switched from an original function mode of converting direct current into alternating current to a function mode of converting alternating current into directcurrent. The residual energy of the alternating current connector is transferred to the energy storage voltage stabilization module, so that the voltage of the alternating current connector can be quickly reduced, and the situation that the personal safety is endangered due to accidental electric shock and the like caused by the residual voltage of the alternating current connector after the discharging is finished can be avoided.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a bidirectional charger, an external discharge method thereof, and a new energy vehicle including the bidirectional charger. Background technique [0002] The traditional charger converts the alternating current of the grid into direct current to charge the power battery, and the energy conversion is one-way transmission. Compared with the traditional one-way energy transfer, the two-way charger is gradually developing into a two-way charger. The two-way charger adds the function of external discharge on the basis of the traditional one-way charging function. The two-way charger can realize the two-way transmission of energy conversion, so that the electric vehicle can become an energy supply device for external discharge, realize the distributed grid-connected discharge (V2G, Vehicle to Grid) of peak and valley adjustment, and vehicle-to-vehicle Emergency rescue discharge (...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a charging and discharging control system, method and device, which can solve the problems of contact risk and personnel injury in the existing two-way charger, greatly improve the discharge safety of the two-way charger, and realize The active safety protection function ensures the rapid reduction of the voltage on the AC side in emergency situations, greatly reducing the damage to personnel from electric shock

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