Power supply device implemented by complementation of solar electrical energy generation and hydraulic power generation

The utility model relates to the field of power generation technologies, and provides a power supply device implemented by the complementation of solar electrical energy generation and hydraulic power generation, and the power supply device can generate electricity normally in rainy days, rainy seasons and dry seasons, supplies power stably, and can fully use domestic water resources. The power supply device comprises a solar photovoltaic module, a brace, a battery pack, a rectifier, a hydroelectric generator, a water storage tank, a water collecting tank and a water pump, wherein the water storage tank is fixedly arranged at the upper part of the brace, the hydroelectric generator is arranged at the bottom end of the brace, a water outlet of the water storage tank is connected with the hydroelectric generator by a drain pipe, the drain pipe is located in the brace, a water outlet of the hydroelectric generator is communicated with the water collecting tank, a water inlet of the water collecting tank is communicated with each domestic water drain pipe so as to collect domestic wastewater, a water outlet of the water collecting tank is communicated with a water inlet of the water storage tank by the water pump, and the power end of the water pump is connected with the battery pack.