Solar DC voltage increase and stabilizing type charging power supply

The invention provides a solar DC voltage increase and stabilizing type charging power supply. The solar DC voltage increase and stabilizing type charging power supply comprises a solar battery, a storage battery pack, a power-shortage protection circuit, an adjustable square wave circuit, a DC voltage increase circuit and a DC adjustable voltage stabilizing circuit which are sequentially connected; the solar battery is used for photoelectric conversion; the electricity energy produced by the photoelectric conversion of the solar battery is used for charging the storage battery pack, and the nominal voltage of the storage battery pack is 6V; the power-shortage protection circuit is used for stopping discharging of the storage battery pack when the end voltage of the storage battery pack is less than 5.7V; the adjustable square wave circuit outputs a square wave impulse signal of which the duty ratio K is adjustable and is not less than 50%; the DC voltage increase circuit increases the voltage through the resistance adjusting of a first potentiometer; the DC adjustable voltage stabilizing circuit is used for stabilizing the voltage of the DC voltage increase circuit by the synchronous adjusting of a double-link adjustable potentiometer, and the stable output voltage ranges from 10 to 230V. The solar DC voltage increase and stabilizing type charging power supply has the advantages of being applicable to charging of electronic devices with different charging voltage types, energy saving, environmentally friendly, charging on real time, and being flexible and convenient to charge.