Vehicle-to-vehicle charging machine and system as well as charging method

Abstract

The invention relates to a vehicle-to-vehicle charging machine and system as well as a charging method. The vehicle-to-vehicle charging machine comprises a matching conversion circuit, a high-voltage power receiving port used for being connected with a power receiving vehicle, a high-voltage charging port used for being connected with a charging vehicle as well as a low-voltage direct current bus and a charging machine controller, wherein the high-voltage power receiving port and the high-voltage charging port are connected with an input end and an output end of the matching conversion circuit respectively; the machine further comprises a low-voltage energy storage device used for supplying power to a control system of the vehicle-to-vehicle charging machine, a first low-voltage port used for being connected with the charging vehicle and a second low-voltage port used for being connected with the power receiving vehicle; the low-voltage energy storage device is connected with a low-voltage bus which is connected with the first low-voltage port and the second low-voltage port. According to the provided vehicle-to-vehicle charging method, when a certain electric vehicle breaks down due to the fact that the battery runs out, any one of other electric vehicles can charge the electric vehicle by means of the independent vehicle-to-vehicle charging machine.

Description

technical field [0001] The invention relates to a new energy field, in particular to a vehicle-to-vehicle charger between pure electric vehicles, and provides a vehicle-to-vehicle charging system and a charging method. Background technique [0002] With the continuous promotion of new energy vehicles, especially pure electric vehicles, relevant subsidy policies for the construction of charging stations in various places are also planned or even introduced, and the number and distribution of charging infrastructure have been greatly improved. However, due to the limitation of the mileage of pure electric vehicles, vehicle users are very concerned about the problem that the vehicle breaks down due to the exhaustion of the power source. Although many vehicle manufacturers remind the vehicle driver of the remaining battery power information and low battery warning information through the vehicle instrument or other methods, it is inevitable that the remaining power of the vehicl...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a system for mutual charging between pure electric vehicles, first to solve the technical problem of poor versatility of the mutual charging system between electric vehicles in the prior art, and on this basis to solve the problem of charging vehicles, receiving vehicles, The problem of low-voltage power supply between chargers

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