Charging system based on photovoltaic performance

Abstract

The invention relates to the photovoltaic technology field and provides a charging system based on photovoltaic performance. The system comprises an electric supply input unit. An output terminal of the electric supply input unit is connected to an input terminal of a rectification inversion unit. An output terminal of the rectification inversion unit is connected to a direct current bus unit. An input terminal of a DC / DC conversion unit is connected to the direct current bus unit. An output terminal of the DC / DC conversion unit is connected to an input terminal of a load interface unit. An output terminal of a photovoltaic power supply unit is connected to a direct current bus. Charging and discharging terminals of an energy storage unit are connected to the direct current bus unit respectively. A processor unit is connected to the electric supply input unit, the rectification inversion unit, the direct current bus unit, the DC / DC conversion unit, the photovoltaic power supply unit, the energy storage unit and the load interface unit respectively so as to carry out communication. By using the charging system, energy cleaning is realized; dependence on a power grid is reduced and even eliminated; power conversion is simplified and losses are reduced.

Description

technical field [0001] The invention belongs to the technical field of photovoltaics, in particular to a charging system based on photovoltaics. Background technique [0002] All human activities are inseparable from energy. With the gradual depletion and high pollution of traditional energy sources, green new energy will be the future direction of energy development. It is not only sustainable, but also clean. Therefore, in recent years, new energy has been continuously supported by national policies, including photovoltaic power generation and car charging piles. [0003] In the early stage of the development of charging piles, some people imagined whether photovoltaic power generation can be used to charge electric vehicles, but the realization method is actually very simple, that is, the simple superposition of the two systems, that is, adding charging piles behind the photovoltaic inverter, but the disadvantages are also obvious: cost High, low system conversion effici...

AI Technical Summary

Problems solved by technology

[0003] In the early stage of the development of charging piles, some people imagined whether photovoltaic power generation can be used to charge electric vehicles, but the realization method is actually very simple, that is, the simple superposition of the two systems, that is, adding charging piles behind the photovoltaic inverter, but the disadvantages are also obvious: cost High, low system conversion efficiency, large footprint, unstable energy provided by photovoltaics, two sets of monitoring cannot match, etc.

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