Heat Pipe (HP) is composed of an outer shell, a capillary structure, and a working fluid. The shell of the heat pipe is filled with an appropriate working fluid, which is drawn into a certain vacuum state and sealed. When the surface of the heat pipe comes into contact with the heat source and is heated, the working fluid inside the heat pipe evaporates at the evaporation end, and the pressure rises, pushing the steam to flow to the condensation end. The steam condenses in the low-temperature environment of the condensation end, and the condensed liquid flows back to the evaporation end through the suction core, thus achieving cyclic operation.
Heat pipes have efficient thermal conductivity, and the device they are adapted to typically has a heat flux density range of 10-35W/cm2, exceeding the thermal conductivity of any known metal. The application of heat pipes enriches the design concept of traditional heat sinks, breaking away from the single heat dissipation mode of relying solely on high airflow fans to achieve better heat dissipation effects, and improving the thermal management level and lifespan of devices.