Charging station system of a novel electric vehicle

Abstract

The invention discloses a charging station system of a novel electric vehicle, comprising an energy storage converter connected with an external electric network, used for converting alternating current of the external electric network into direct current, charging an energy storage battery pack, and converting the direct current outputted by the energy storage battery pack into alternating current, and releasing the alternating current to the external electric network; an energy storage battery pack connected with the energy storage converter; a charging station connected to an external powergrid for charging an electric vehicle; a power detection unit which is connected in series on an AC bus with the energy storage converter and the charging station and is used for measuring the powerof the charging station and the energy storage converter. The invention can avoid the superposition problem of the peak-peak load of the distribution network caused by random disorder charging of thebattery vehicle, ensure the stability of the electric load of the electric network, reduce the electric cost of the battery vehicle, avoid frequent switching of the network-side switches, and preventthe reverse current in a more economic form.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a new charging station system for electric vehicles. Background technique [0002] At present, my country has become the largest electric vehicle market in the world. In order to promote the development of electric vehicles, a large number of electric vehicle charging stations (such as charging piles) need to be arranged. [0003] Since the charging time of electric vehicles is not fixed and random and out of order, it is easy to cause the peak-peak superposition of the distribution network load of the power grid, and the peak-valley difference will be further expanded. If charging at the "peak" time, on the one hand, the electricity cost of electric vehicles will be higher; on the other hand, it will lead to an increase in the electricity load of the grid, which will have a serious impact on the quality of power supply of the grid. [0004] Therefore, there is...

AI Technical Summary

Problems solved by technology

[0003] Since the charging time of electric vehicles is not fixed and randomly disordered, it is easy to cause the peak-peak superposition of the distribution network load of the power grid, and the peak-valley difference will be further expanded

If charging at the "peak" time, on the one hand, the electricity cost of electric vehicles will be higher; on the other hand, it will lead to an increase in the power load of the grid, which will have a serious impact on the quality of power supply of the grid

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