High-efficiency spacecraft thermal management system

The utility model provides a high-efficiency spacecraft thermal management system. The high-efficiency spacecraft thermal management system comprises a heat collecting module (1), a high-efficiency heat dissipating module (2) and a heat exchanger (5), wherein the heat collecting module (1) and the high-efficiency heat dissipating module (2) are coupled through the heat exchanger (5). According to the high-efficiency spacecraft thermal management system, heat is collected, stored and transported through the heat collecting module, the high-efficiency heat dissipating module for mixing work mediums is applied, the radiation temperature of a radiator is greatly raised, the heat dissipation efficiency of the radiator is improved, the needed area of the radiator is reduced, and therefore the problem that a large spacecraft and a satellite spacecraft are insufficient in heat dissipating area is solved. The high-efficiency spacecraft thermal management system has the advantages of being small in size, light in weight, low in manufacturing cost, low in energy consumption and applicable to spacecrafts with the heat dissipating areas seriously insufficient.