The invention discloses a solar photo-thermal power generation device. The solar photo-thermal power generation device comprises a disc type collecting lens, a heat collecting
pipe, a heat collector,a
thermoelectric conversion module and an
energy storage module. The heat collecting
pipe is arranged above the disc type collecting lens. The heat collector is arranged below the disc type collectinglens and connected with the disc type collecting lens through the heat collecting
pipe. The
thermoelectric conversion module is connected with the heat collector. The
energy storage module and the thermo-electric conversion module are connected in parallel. Through the reformation of a traditional disc type
solar power generator, in combination with the
energy storage module and the
thermoelectric conversion module which are based on a medium-high temperature
phase change material, a controllable circulation loop of heat absorption,
heat transfer, heat release and cooling of a
heat transfer work medium is reasonably designed; when light is sufficient, the energy storage module and the power generation module work concurrently; when it is at night or
sunlight is insufficient, the two modules form a series
closed loop, the energy
storage material is utilized to release heat to supplement heat, power generation is continuously conducted, and then time-sharing
sustainable power generationis achieved; and on one hand, the photo-thermal
utilization rate is improved, and on the other hand, the problem that the disc type solar device depends on
sunlight can be solved.