Middle-high pressure liquid air energy storage power generation device

A medium-high pressure liquid air energy storage power generation device belongs to the technical field of power generation and comprises an air compression unit, a compressed air refrigeration unit, a gas-liquid separation unit, a liquid air storage unit, a liquid air vaporization unit, a cold storage unit and a turbine power generation unit which are sequentially arranged. The thermoelectric power generation unit comprises a semiconductor thermoelectric power generation mechanism, the two ends of a cold medium circulation pipeline in the semiconductor thermoelectric power generation mechanism are connected to an inlet pipeline and an outlet pipeline of the cold storage unit through electric control valves respectively, and a heat medium circulation pipeline in the semiconductor thermoelectric power generation mechanism is connected with the liquid heating unit. The liquid heating unit comprises a liquid heater connected with the inlet end of the heat medium circulation pipeline, a water tank connected with