Output power leveling of on-chip thermoelectric generator using a solid?solid phase change material
Output power leveling of on-chip thermoelectric generator using a solid?solid phase change material
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使用固相变材料的片上热电发生器的输出功率均衡
DOI：
10.1016/j.est.2022.106119
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发表时间：
2022
影响因子：
9.4
通讯作者：
Yamada Noboru
中科院分区：
文献类型：
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作者：
Nemoto Kosei;Takeuchi Ryosei;Baba Masaaki;Takeda Masatoshi;Yamada Noboru
利用温差发电器（TEG）的能量收集技术是解决环境能源问题的一种有前途的方法。此外，可以改善电子设备的净功耗的片上TEG正引起关注。然而，对于不稳定的热源，例如电子芯片，需要热控制或电控制来稳定TEG输出。在本研究中，我们着重于使用相变材料（PCM）的热控制输出功率稳定技术。使用二氧化钒（VO 2）烧结体（固-固PCM）作为PCM，并与石蜡（典型的固-液PCM）进行比较。的TEG的发电性能与这些PCM安装在一个薄的发热芯片进行了评估。含VO 2的TEG具有比石蜡更高的发电和输出功率均衡性能，这主要是因为其具有比石蜡更高的导热性。此外，在具有VO 2的TEG情况下，发热芯片的最高温度比没有PCM的最高温度低14.4 °C，这表明具有VO 2的片上TEG可以在发电的同时使电子芯片的温度均匀。
Energy harvesting technology using thermoelectric generators (TEG) is a promising solution to environmental energy problems. Moreover, an on-chip TEG, which can improve the net power consumption of electronic devices, is attracting attention. However, thermal or electrical control is required to stabilize the TEG output for unsteady heat sources, such as electronic chips. In this study, we focused on output power-stabilization technology by thermal control using phase-change materials (PCM). A vanadium dioxide (VO2) sintered body, a solid–solid PCM, was used as the PCM and compared to paraffin, a typical solid–liquid PCM. The power generation performance of the TEG with these PCMs mounted on a thin heat-generating chip was evaluated. The TEG with VO2exhibited higher power generation and output power leveling performance than paraffin, mainly because it has a higher thermal conductivity than paraffin. Furthermore, in the TEG with VO2case, the maximum temperature of the heat-generating chip was 14.4 °C lower than that without the PCM, indicating that the on-chip TEG with VO2could level the temperature of the electronic chip while generating electricity.