手腕型熱致電晶片應用於體溫發電之製作

先前研究者曾嘗試為個人電子產品提供額外的功率，例如壓電式發電，當它被壓擠或彎曲時會產生電能。當前，有另外一種方式，這可能是最理想應用於低功耗的穿戴式電子裝備，就是利用你的身體天然散逸的餘熱，透過熱電元件來產生電力。經由熱電元件可以將體溫轉換成電能，將可提供穿戴式移動自行供電裝置的電源。當然，此體溫發電裝置也可以提供功率甚低的穿戴式電子裝置之輔助電力，如生醫感應器、電子紙、智慧型手錶和隨身追踪器，更甚者還可能用於智慧項圈和智能衣服等。本研究將利用3D列印與微機電系統，發展手腕型熱致電晶片。利用這種方法會使此裝置變薄，重量更輕，以及更具可撓性。此外，本研究之設計參數包含熱電晶粒尺寸、間距、對數與輸出電特性做一系列實驗量測。最後，本研究發展的手腕型熱電晶片利用人體體溫發電，可以得到最大輸出開路電壓與短路電流分別為 5.98 mV與46.93μA。同時，本研究提出體溫熱電晶片可以展示出很大的容許彎曲半徑，以及經過反覆不斷彎曲後，仍然能保持穩定地電特性。未來，藉由體溫熱致電晶片可以將體溫轉換為電能，有效地應用於穿戴式移動電子裝置，相信這項研究可以加快穿戴式移動電子裝置的發展。

關鍵字

體溫；熱致電晶片；穿戴式；可撓式；微機電系統

並列摘要

Previous studies had attempted to generate additional power for personal electronics include piezoelectric generators that generated energy when pressed or bent. Currently, there exhibits another way, which may be ideal for low-power wearable devices; and that is to harness the waste heat your body naturally gives off through the thermoelectric generators (TEGs). The conversion of body heat into electrical energy using the TEGs is useful for wearable self-powered mobile electronic systems. Certainly, it also could provide a significant auxiliary electricity for the low-power wearable devices such as medical sensors, e-paper, smart watches, and fitness trackers, but also perhaps smart collars and smart clothing. In this study, we’ll herein demonstrate a flexible TE generator using a 3 D printing as well as MEMS (micro-electro-mechanical systems) techniques. The structure of a TE device is going to fabricate with the flexible top and bottom substrates. With these techniques it is possible to make the device thinner, light weight, and more flexible. In addition, the design parameters, i.e., thermoelectric material sizes, particle's gaps, and thermoelectric couples’ numbers related with the output power are experimentally measured in this study. Finally, the wrist-type thermo-electric generators for energy harvesting from the human body was achieved the maximum values of of 5.98 mV and 46.93μA for the open circuit voltage and short circuit current, respectively. Here, the developed TE generator will show an allowable bending radius and no change in performance by repeating bends. In the future, the conversion of body heat into electrical energy using a flexible thermoelectric (TE) generator is useful for wearable self-powered mobile electronic systems. We hope that can expedite the development of wearable self-powered mobile devices.

並列關鍵字

body heat ； thermoelectric generator ； wearable ； flexible ； MEM

參考文獻

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手腕型熱致電晶片應用於體溫發電之製作

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