Solar uninterruptible power supply management system

Abstract

The present invention relates to a solar uninterruptible power supply management system. The solar uninterruptible power supply management system includes a main controller, solar photovoltaic cells, an overcurrent and overvoltage protection circuit, anti-backflow control circuits, an input undervoltage judging circuit, a maximum power point tracking and battery charging and discharging management unit, a lithium battery pack, a battery voltage acquisition and balanced charging circuit and a multiple-output control circuit. According to the solar uninterruptible power supply management system of the invention, a direct current-to-alternating current conversion step is directly bypassed, an input power source is subjected to voltage reduction through a maximum power point tracking maximum, and the voltage-reduced input power source is used for charging the batteries, and at the same time, an inner power source voltage reduction chip is adopted to output a stable power source to an external device; the lithium batteries are used for storing energy; and the solar uninterruptible power supply management system is provided with the battery protection circuit, an integrated data memory, the input anti-backflow circuits and a plurality of communication interfaces, can effectively utilize the electric energy of the solar photovoltaic cells, has a fault early warning function, can provide the working state of the whole system in real time and can support multi-power source controllable output and multi-power source input.

Description

technical field [0001] The invention relates to the technical field of energy utilization, in particular to a solar uninterruptible power supply management system. Background technique [0002] In the existing solar uninterruptible power supply management system, it is basically boosted by low-voltage DC and then inverted into high-voltage AC, but the equipment needs to convert the high-voltage AC power into a DC low-voltage power supply suitable for the needs of its own system, which greatly reduces The efficiency of solar energy use. In addition, the existing solar uninterruptible power supply management system has high cost and is difficult to control the power output. Basically, the use of batteries results in large volume and high weight, and is not suitable for low-voltage power supply small and medium-power electrical appliances. Contents of the invention [0003] In order to overcome the above problems, the present invention provides a solar energy uninterruptible...

AI Technical Summary

Problems solved by technology

[0002] In the existing solar uninterruptible power supply management system, it is basically boosted by low-voltage DC and then inverted into high-voltage AC, but the equipment needs to convert the high-voltage AC power into a DC low-voltage power supply suitable for the needs of its own system, which greatly reduces Solar Energy Efficiency

In addition, the existing solar uninterruptible power supply management system has a high cost and is difficult to control the power output. Basically, the use of batteries results in large volume and high weight, and is not suitable for low-voltage power supply small and medium power appliances.

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