Driving circuit of switch unit of reverse-connection preventing protection circuit for solar charge controller

Abstract

The invention discloses a driving circuit of a switch unit of a reverse-connection preventing protection circuit for a solar charge controller. The driving circuit is provided with a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a diode D7, a negative-positive-negative (NPN) type triode Q6, a positive-negative-positive (PNP) type triode Q7, an NPN type triode Q8, an NPN type triode Q9 and a PNP type triode Q10. The driving circuit of the switch unit of the reverse-connection preventing protection circuit for the solar charge controller can output a driving signal through a signal output terminal DRV2; when a storage battery is connected reversely, the storage battery is prevented from being charged reversely during charge of the storage battery; and when the storage battery is not charged at night, the storage battery can be prevented from being discharged to a solar battery. The driving circuit has the advantages of simple structure and accurate detection.

Description

technical field [0001] The invention relates to the technology of a solar charge controller, in particular to a driving circuit for a switch unit of an anti-reverse connection protection circuit of a solar charge controller. 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 safe...

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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