Dynamic isotope cell based on liquid metal

Abstract

The present invention provides a dynamic isotope cell based on liquid metal. The dynamic isotope cell comprises: a metallic conduit; a heat source cavity cladding, wherein two opposite ends of the heat source cavity cladding respectively communicate with two ends of the metallic conduit to form a closed circulation line, and the heat source cavity cladding is provided with a one-way inflation valve; a fuel box fixedly arranged at the internal portion of the heat source cavity cladding; a radioactive source arranged in the fuel box; liquid metal stored in the circulation line; a piezoelectric transduction module arranged at the inner surface of the metallic conduit; a heat radiation structure arranged at the outer surface of the metallic conduit and arranged at intervals with the piezoelectric transduction module; and an electromagnetic pump arranged on the metallic conduit and configured to drive the circulation flow of the liquid metal. The dynamic isotope cell is good in reliability,high in energy conversion efficiency, good in work stability, adjustable in output power and long in service life.

Description

technical field [0001] The present application relates to the field of dynamic isotope batteries, in particular to liquid metal-based dynamic isotope batteries. Background technique [0002] The isotopes whose nuclear composition (or energy state) changes spontaneously and emit radiation are called radioactive isotopes. The radioactive dynamic isotope battery, referred to as the dynamic isotope battery, uses a transducing component to convert the energy of the radiation released by the radioactive isotope decay into electrical energy output, so as to achieve the purpose of power supply. Due to the advantages of long service life, strong environmental adaptability, good working stability, no maintenance, and miniaturization, isotope batteries have been widely used in important fields such as military defense, deep space and deep sea, polar exploration, biomedicine, and electronics industry. . [0003] The isotope battery was first proposed by the British physicist Henry Mos...

AI Technical Summary

Problems solved by technology

[0004] The research results of the above four types of isotope batteries show that the low energy conversion efficiency is still the common feature of current isotope batteries

The development of static thermoelectric isotope batteries mainly benefits from the research and development at the national level, especially the design and manufacture of radioisotope thermoelectric generators (RTG) in the United States. The energy conversion efficiency is low, even the latest NASA report enhanced multi-mission radioisotope thermoelectric generators (eMMRTG) has a conversion efficiency of less than 8%, so its application range is limited and the process of civilian use is relatively difficult

However, traditional dynamic isotope batteries are based on turbines or heat engines to generate electricity, and there are technical bottlenecks such as the difficulty in lubrication of high-speed running parts, and the inertia vector generated by high-speed rotation affects the stability of the system, so it has not been practically applied.

In summary, the research on dynamic isotope batteries still needs to be in-depth

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