Charging system of electric car charging station

Abstract

Provided in the invention is a charging system of an electric car charging station. The charging system comprises a centralized electric energy conversion apparatus, a direct-current bus, a plurality of direct-current conversion charging modules, and a battery box. An alternating-current side of the centralized electric energy conversion apparatus is connected with an alternating-current power supply; a direct-current side of the centralized electric energy conversion apparatus is connected with the direct-current bus; and the centralized electric energy conversion apparatus is used for converting the electric energy of the alternating-current power supply into the direct-current electric energy. The plurality of direct-current conversion charging modules respectively connected with the direct-current bus are used for converting the direct-current electric energy of the direct-current bus into the charging electric energy meeting the battery specification. The battery box connected with one or more direct-current conversion charging modules is used for providing the charging electric energy meeting the battery specification for the battery. According to the invention, the centralized electric energy conversion apparatus is used for completing the high-power rectification function; distribution to the plurality of direct-current conversion charging modules by the direct-current bus is realized; the integration degree is high; and the end equipment is simplified. Therefore, problems low distribution running integration degree and large occupied area in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a charging system for an electric vehicle charging station. Background technique [0002] As a clean and low-carbon green vehicle, electric vehicles have attracted great attention from all over the world. With the gradual promotion of electric vehicles, the construction of charging stations, as an important infrastructure, is on the rise. However, the theory of planning and design of charging stations in China is still not perfect, and it is still in the demonstration and exploration stage. The system optimization design of the charging station plays a vital role in the implementation of engineering construction, safe and stable operation and economic operation management. [0003] In the charging system of the commonly used electric vehicle charging station, an AC / DC charger converts alternating current into direct current matching battery parameters to charge the battery of the ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a charging system for an electric vehicle charging station to solve the problem in the prior art that multiple AC / DC chargers are distributed and operated with low integration and large footprint

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