Photovoltaic charging system as well as running method and device thereof

Abstract

The invention discloses a photovoltaic charging system. The system comprises a photovoltaic substrate, an energy storage battery and a charging port which is used for externally connecting the charging ends of electro-mobiles, wherein the photovoltaic substrate, the energy storage battery and the charging port have the charging connection relationships as follows: charging connection A: the photovoltaic substrate is connected with the energy storage battery through DC-DC conversion; charging connection B: the energy storage battery is connected with the charging port through DC-DC conversion; and charging connection C: the photovoltaic substrate is connected with the charging port through DC-DC conversion. The photovoltaic charging system is simple in charging conversion process and high in efficiency. The charging connection A of the photovoltaic charging system is preferably realized by two DC-DC converters in parallel. The invention furthermore preferably discloses a running method of the photovoltaic charging system; according to the steps in the running method, functional modes can be established to form a functional mode framework; and the running method is mainly realized through computer programs stored in computer readable storage mediums.

Description

technical field [0001] The invention relates to a photovoltaic charging system and its operating method. The steps in the operating method can establish functional modules and combine them into a functional module framework, which is mainly realized by computer programs stored in computer-readable storage media. Background technique [0002] With the intensification of the energy crisis and the enhancement of environmental awareness, electric vehicles have been widely developed and used. Charging an electric vehicle requires a charging station. In order to make full use of energy, the sunshade above the current charging station is usually laid with photovoltaic substrates. [0003] At present, grid-connected inverters are used to invert the DC power generated by the photovoltaic substrate into AC power and transmit it to the grid. The charging station needs to convert alternating current into direct current and then output it. The process from photovoltaic substrate to cha...

AI Technical Summary

Problems solved by technology

The charging station needs to convert alternating current into direct current and then output it. The process from the photovoltaic substrate to the output of the charging station is equivalent to a multi-level transformation from direct current to alternating current, and then from alternating current to direct current, which makes the entire system less efficient

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