Dual-power intelligent power supply circuit based on lithium battery

The invention discloses a dual-power intelligent power supply circuit based on a lithium battery, and relates to the field of power supply, and the dual-power intelligent power supply circuit based on the lithium battery comprises a power supply module which is used for supplying voltage, and the voltage comprises a first DC voltage obtained through voltage reduction, rectification and filtering of a commercial power supply and a second DC voltage supplied by the lithium battery; compared with the prior art, the invention has the beneficial effects that the capacitive device is arranged in the voltage output module, so that when the power supply is switched, the capacitive load can ensure that the voltage does not suddenly change, and the voltage fluctuation of the load end in the switching process of the power supply is slowed down; an indication starting module is arranged, so that impedance in a power supply loop can be reduced during power supply of the second direct-current voltage, and power supply of t