High-efficiency fused salt storage tank

The invention provides a high-efficiency fused salt storage tank. The high-efficiency fused salt storage tank comprises a tank body, a dielectric plate, a heating assembly and a driving device, wherein the driving device drives the dielectric plate to be separated from the molten salt liquid, so that the dielectric plate stores heat released by the heating assembly; or the driving device drives the dielectric plate to be immersed in the molten salt liquid, so that the dielectric plate heats the molten salt liquid. According to the high-efficiency fused salt storage tank, when the dielectric plate is separated from the fused salt liquid, the dielectric plate stores heat energy to increase additional heat storage capacity, so that the heat storage capacity of the fused salt storage tank is increased, the flexible operation capacity of a thermal power generating unit is improved, and when the dielectric plate is immersed in the fused salt liquid, the dielectric plate makes direct contact with the fused salt liqu