Thermoelectric generator with a high integration density for portable and wearable self-powered electronic devices
Thermoelectric generator with a high integration density for portable and wearable self-powered electronic devices
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DOI：
10.1016/j.enconman.2021.114571
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发表时间：
2021-07-29
影响因子：
10.4
通讯作者：
Ono, Takahito
中科院分区：
文献类型：
--
作者：
Van Toan, Nguyen;Tuoi, Truong Thi Kim;Ono, Takahito
本工作报告了用于便携式和可穿戴式自供电电子设备的热电发电机（TEG）。两种TEG，包括低（装置#1）和高（装置#2）集成数量的热电元件，采用通过组装技术制造的高性能热电材料，对它们进行评估和相互比较。装置#1由17对尺寸为1 mm x 1 mm x 2 mm的热电元件组成，而装置#2具有127对尺寸为0.4 mm x 0.4 mm x 2 mm的热电元件。两个装置都制造在15 mm x 15 mm的相同衬底上。在温差Δ T为75 ℃时，器件#1和#2的功率分别为10.1mW和33.9mW，而在温差Δ T = 5 ℃时，器件#1和#2的功率分别为43 μ W和91 μ W。与最近的相关工作相比，制造的TEG显示出更高的性能。此外，从制造的TEG收集的能量可以通过DC-DC转换器存储在可充电电池中。在Delta T = 2 ℃和8 ℃时，DC-DC转换器的输出分别达到2.8 V和4 V，对应DC-DC电子转换效率，DC DC分别为8.1%和23.3%。所制造的TEG作为计算器的电源以及扭转手表已被成功地证明。研究表明，所制备的TEG具有很高的潜力，可用于便携式和可穿戴式自供电电子设备。
This work reports thermoelectric generators (TEGs) for portable and wearable self-powered electronic devices. Two kinds of TEGs, including low (device #1) and high (device #2) integrated number of thermoelectric elements, employing a high performance thermoelectric material fabricated by an assembly technology which are evaluated and compared against each other. Device #1 consists of 17 pairs of thermoelectric elements with dimensions of 1 mm x 1 mm x 2 mm while device #2 has 127 pairs of thermoelectric elements with dimensions of 0.4 mm x 0.4 mm x 2 mm. Both devices are fabricated on the same substrate of 15 mm x 15 mm. Maximum output powers for devices #1 and #2 are obtained as 10.1 mW and 33.9 mW at temperature difference Delta T of 75 degrees C, respectively, while at low.T = 5 degrees C, those of devices #1 and #2 are 43 mu W and 91 mu W, respectively. Fabricated TEGs show higher performance in comparison to the recent related works. Moreover, the harvested energy from the fabricated TEG can be stored in a rechargeable battery via a DC-DC converter. The output of the DC-DC converter reaches 2.8 V and 4 V at Delta T = 2 degrees C and 8 degrees C, respectively, which corresponds to the DC-DC electronic conversion efficiency.DC DC is 8.1% and 23.3%, respectively. The fabricated TEG as a power source for a calculator as well as a twist watch has been demonstrated successfully. The investigation in this work indicated that the fabricated TEG possesses a high potential for portable and wearable self-powered electronic devices.