一种为极端环境中物联网传感器供电的长寿命瓦量级功率陆用同位素温差电池

邓炜; 王雪健; 潘小东; 张世旭; 丁晶洁; 李公平

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An endurable watt-power Bi2Te3-based terrestrial radioisotope thermoelectric generator harvesting decay energy for IoT-based sensors in extreme environments

首发时间：2020-02-07

Deng Wei ¹
Deng Wei (born on April 22, 1993), male, master of nuclear technology and application, school of nuclear science and technology, Lanzhou University, majoring in design, experiment and simulation of radioisotope batteries and thermoelectric generators.
Wang Xuejian ¹
Wang Xuejian (born on January 13, 1994), male, master of nuclear technology and application, school of nuclear science and technology, Lanzhou University. He mainly engaged in the experimental research of cluster membrane formation and thermoelectric generator.
Pan Xiaodong ¹
Pan Xiaodong (born on February 7, 1979), male, lecturer in school of nuclear science and technology, Lanzhou University. His research is mainly focused on X-ray imaging
Zhang Shixu ¹
Special power supply.
Ding Jingjie ¹
Zhang Shixu (born on September 25, 1984), male, associate professor in school of nuclear science and technology, Lanzhou University. His research is mainly focused on the development of cluster source and film forming device
Li Gongping ¹
Li Gongping (born on February 2, 1964), male, professor in school of nuclear science and technology, Lanzhou University. His research interests include the interaction and effects of rays and matter; physics and technology in radiographic and nondestructive testing; physics and technology in ion source and X-ray source; neutron physics and technology; design and development of novel radioisotope batteries.

1、Institute of Nuclear Energy and Nuclear Technology, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China

Abstract：Radioisotope thermoelectric generator (RTG), a technology that mostly adopted in space missions, is regarded as a promising technology to power the Internet of Things-based (IoT) sensors, especially those in extreme environments, for its merits of stability, maintenance-free and long-life. This paper studied RTG\'s application on earth and fabricated an endurable watt-power Bi2Te3-based terrestrial RTG. By employing the finite element analysis, an octagonal cylinder-shaped substituted electric heater was designed to have a higher surface temperature and better temperature uniformity while the fin-shaped radiators to dissipate heat at their optimal heat-sinking capacity. In the experiment part, this terrestrial RTG was tested to have an output power of 4.64 W and an open-circuit voltage of 27.2 V. Also, an optimal electric connection instruction between each thermoelectric (TE) converter was proposed from the experiment. Whereafter, based on the structure used in the experiment part, the finite element analysis was carried out to optimize the geometry of TE converters, the terrestrial RTG possessed an enhanced output power of 10.5 W with an open-circuit voltage of 57.8 V. Ultimately, this paper proposed important guidance for the design and optimization of an endurable terrestrial RTG, which could provide some prospects for its application on IoT-based sensors.

keywords： terrestrial radioisotope thermoelectric generator decay energy harvesting endurable finite element analysis performance optimization

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一种为极端环境中物联网传感器供电的长寿命瓦量级功率陆用同位素温差电池

邓炜 ¹
Deng Wei (born on April 22, 1993), male, master of nuclear technology and application, school of nuclear science and technology, Lanzhou University, majoring in design, experiment and simulation of radioisotope batteries and thermoelectric generators.
王雪健 ¹
Wang Xuejian (born on January 13, 1994), male, master of nuclear technology and application, school of nuclear science and technology, Lanzhou University. He mainly engaged in the experimental research of cluster membrane formation and thermoelectric generator.
潘小东 ¹
Pan Xiaodong (born on February 7, 1979), male, lecturer in school of nuclear science and technology, Lanzhou University. His research is mainly focused on X-ray imaging
张世旭 ¹
Special power supply.
丁晶洁 ¹
Zhang Shixu (born on September 25, 1984), male, associate professor in school of nuclear science and technology, Lanzhou University. His research is mainly focused on the development of cluster source and film forming device
李公平 ¹
Li Gongping (born on February 2, 1964), male, professor in school of nuclear science and technology, Lanzhou University. His research interests include the interaction and effects of rays and matter; physics and technology in radiographic and nondestructive testing; physics and technology in ion source and X-ray source; neutron physics and technology; design and development of novel radioisotope batteries.

1、核能与核技术研究所，核科学与技术学院，兰州大学，730000

摘要：同位素温差电池是一种被广泛应用于航天中的技术，因其工作稳定、无需维护、长寿命的工作特点，同位素温差电池也可以作为一种可靠电源为物联网传感器，特别是极端环境中的传感器供电。本文研究了同位素温差电池在陆地上的应用并研制了一款长寿命瓦量级功率的陆用同位素温差电池。通过有限元模拟，本文设计制造的正八面柱形热源能够提供均匀的高温，相应的翅片型散热器则能发挥最佳散热性能并在换能模块上建立起有效温差。实验部分中，这款陆用同位素温差电池的开路电压可达27.2V，同时最佳输出功率为4.64W。另外，通过实验本文总结了电池给不同设备供电时应采取的最佳串并联方式。随后，本文利用有限元模拟优化了温差换能模块的几何尺寸，优化后的陆用同位素温差电池性能进一步提升，其开路电压模拟值达到57.8V，最佳输出功率模拟值提升至10.5W。最终，本文为陆用同位素温差电池的研制提供了一些指导，并为其在物联网传感器中的应用提供了参考。

关键词：陆用同位素温差电池衰变能利用长寿命有限元分析性能优化

基金：

1. National Natural Science Foundation of China （11604129, 11905089）

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Deng Wei,Wang Xuejian,Pan Xiaodong,et al. An endurable watt-power Bi2Te3-based terrestrial radioisotope thermoelectric generator harvesting decay energy for IoT-based sensors in extreme environments[EB/OL]. Beijing:Sciencepaper Online[2020-02-07]. https://www.paper.edu.cn/releasepaper/content/202002-28.

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论文编号	202002-28
论文题目	一种为极端环境中物联网传感器供电的长寿命瓦量级功率陆用同位素温差电池
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