Temperature difference energy driving device of underwater glider

The invention provides a temperature difference energy driving device of an underwater glider. The characteristic that the external water temperature changes along with the depth in the working process of a glider is reasonably utilized through a phase change working medium in a heat exchanger, and heat energy in the environment is collected to complete conversion of mechanical energy; heavy buoyancy of the glider is changed through water feeding and discharging, long-time endurance driving force is provided for the underwater glider, and stability and hydrodynamic characteristics of the glider in the sailing process are guaranteed. A main shell is of a revolving body structure, two end portions of the main shell are sealed through sealing flanges, a buoyancy adjusting mechanism is arranged at the tail, and the interior is arranged in a cylinder mode. The heat exchanger adopts a heat transfer strengthening structure, and a heat transfer copper sheet is additionally arranged in the heatexchanger, so the heat t