Reverse connection preventing protective circuit of solar charge controller with common-anode structure

Abstract

The invention discloses a reverse connection preventing protective circuit of a solar charge controller with a common-anode structure, which is provided with a solar battery, a storage battery, a safety fuse, a microprocessor unit, a first power supply unit, a second power supply unit, a first driving unit, a second driving unit, an MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) Q1, an MOSFET Q2, a diode D1, a diode D2, a solar battery reverse connection detecting unit and a storage battery reverse connection detecting unit. Through the solar battery reverse connection detecting unit, the storage battery reverse connection detecting unit, the fist driving unit and the second driving unit, a protection function can be immediately generated when the anode and the cathode of the solar battery are in reverse connection or the anode and the cathode of the storage battery are in reverse connection, accidents caused because the solar battery reversely charges the storage battery can be avoided, and the safety of the storage battery, the solar battery and the solar charge controller and personal safety are effectively protected. The circuit is simple in structure, perfect in protection function and favorable in effect and has double reverse connection preventing protection functions.

Description

technical field [0001] The invention relates to the technology of a solar charge controller, in particular to an anti-reverse connection protection circuit of a solar charge controller with a common anode structure. Background technique [0002] The solar charge controller is used to control the whole process of solar battery charging to the battery. During use, if the operation is improper, the positive and negative polarities of the battery at the input terminal of the controller are reversed, or the positive and negative polarities of the solar battery at the input terminal of the controller are reversed. , or the positive and negative polarities of the two are reversed at the same time, so that during the charging process, it will cause the solar battery to reversely charge the battery. , Seriously affect the service life of the battery, and more seriously, it will cause the battery to overheat and explode, which will easily cause property loss and personal safety accide...

AI Technical Summary

Problems solved by technology

[0002] The solar charge controller is used to control the whole process of solar battery charging to the battery. During use, if the operation is improper, the positive and negative polarities of the battery at the input terminal of the controller are reversed, or the positive and negative polarities of the solar battery at the input terminal of the controller are reversed. , or the positive and negative polarities of the two are reversed at the same time, so that during the charging process, it will cause the solar battery to reversely charge the battery. , seriously affect the service life of the battery, and more seriously, it will cause the battery to overheat and explode, which will easily cause property loss and personal safety accidents.

At present, the existing solar charge controllers do not have reverse connection protection measures in this regard, and there are potential safety hazards

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