NUCLEAR POWER SUPPLY DEVICE

The present application relates to a nuclear power supply device, comprising a graphite base body, a plurality of fuel rods, a plurality of heat pipes, and a thermoelectric converter. The graphite base body is provided with a plurality of first through holes and a plurality of second through holes; the first through holes are filled with a liquid coolant; the fuel rods are respectively placed the first through holes and are used for generating heat energy; the liquid coolant passes the generated heat energy to the graphite base body; the heat energy on the graphite base body is then transferred to the thermoelectric converter by the heat pipes placed in the second through holes for thermoelectric conversion. The liquid coolant achieves a buffering effect between the fuel rods and the graphite base body, and achieves a transition effect for the heat energy transferred to the graphite base body from the fuel rods, thereby avoiding impact of the temperature gradient and swelling of the fuel rods on the graphite base body, and improving the safety of a nuclear reaction process.