Simple maximum power point control circuit for solar cell panel

Abstract

The invention relates to a simple maximum power point control circuit for a solar cell panel. The technology of the simple maximum power point control circuit for the solar cell panel is characterized in including a switching power supply capable of adjusting the output voltage, and a single chip microcomputer; an input end of the switching power supply is connected to a positive pole of the solar cell panel, and an output end of the switching power supply is connected to a positive pole of a storage battery; a negative pole of the storage battery is connected to an I / O port of the single chip microcomputer by a resistor R5; a resistor R1 is connected to the input end of the switching power supply, and the other end of the resistor R1 is connected to a resistor R2 and an I / O port of the single chip microcomputer; a resistor R3 is connected to the output end of the switching power supply, and the other end of the resistor R3 is connected to a resistor R4 and an I / O port of the single chip microcomputer; the other end of the resistor R4 is connected to a ground. According to the invention, an analog to digital converter built in the single chip microcomputer can measure the input voltage, the output voltage, and the output current of the switching power supply, the output power can be calculated, and the switching power supply is controlled to be close to the higher output power till to the maximum output power; the simple maximum power point control circuit for the solar cell panel has the advantages of simple structure, high reliability and low cost.

Description

technical field [0001] The invention belongs to the technical field of solar battery panels, in particular to a simple solar battery panel maximum power point control circuit. Background technique [0002] Solar panels are a new type of green energy. Since the mismatch between the output voltage of the solar panel and the voltage of the battery will result in waste of energy collection, a control technology is required to allow the solar panel to charge the battery at the point of maximum output power. Current control technologies mainly include PWM controllers and other MPPT controllers, etc., but both have the disadvantages of high cost and technical complexity leading to low reliability. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a simple maximum power point control circuit for solar panels, and solve the disadvantages of high cost and low reliability of the existing solar panel cont...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a simple solar panel maximum power point control circuit, and solve the disadvantages of high cost and low reliability of the existing solar panel control circuit

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