本研究論文乃針對一種利用線圈感應式電磁偶合機構的非接觸式充電器，做一感應線圈內嵌於產品外殼的設計改良研究。此類非接觸式充電器主要是利用兩線圈感應磁場產生電流，經由電路設計，收集電流，再對充電電池進行充電。目前已有廠商研發，應用於電動牙刷、手機、無線免電滑鼠、Wii遙控器等小型電子產品。在成本的考量及輕薄短小的設計原則下，如何固定兩線圈間隔距離（氣隙），是設計此類產品機構的重要課題。因此當產品在開發的同時，除了線路的設計外，在結構設計的過程中，包括外殼的設計、感應線圈位置的安排等問題都是影響產品品質及成本的重要因素。
線圈內嵌於產品外殼的設計，可縮小產品的體積、減少結構設計、組裝成本、材料成本及不良率。本研究針對兩線圈以間隔1mm 之不同距離，並採用定電流方式進行充電實驗，記錄其充電效率的變化，最後得到的實驗數據顯示，在兩線圈的氣隙距離為2~5mm時，充電效率及穩定性較佳。而在材料成本分析方面，以iphone手機為例，每生產一部iphone手機，約可節省9.85%的材料成本。綜上所述，感應線圈內嵌於產品外殼的設計，是值得研究發展的設計方式。

This dissertation is devoted to the design improvement of the
non-contact induction charging mechanism inlaid to the outer shell of
(mobile) electronic product. The stated non-contact induction charging
mechanism is composed of two induction coils for induced electromotive
force generation and the relevant electric circuit for electrical energy
collection. The collected electrical energy then will be stored to a
rechargeable battery. Nowadays such kind of non-contact induction
charger mechanism has been used by some commercial sectors mostly for
small-sized electronic product power system, such as mobile phone set,
rechargeable shaver, wireless mouse and remote control. Except for the
relevant electric circuit design, the design of the outer shell, including the
outer shell shape and the inlaid induction coil arrangement, is another
important factor affecting both product quality and cost efficiency.
Usually the design of inlaid induction coils may lead to a multiple
advantages to help reduce the spatial volume of product, simplify
structure design required, bring down the cost for assembling labor and
increase product yield.
By varying the air gap thickness of the two induction coils for
constant current charging at 1mm steps, the experiment result of this
study shows that the air gap of 2~5mm gives better charging efficiency
and stability. On the aspect of the manufacturing material cost analysis,
taking "iphone" as an example, it shows a reduction of the material cost
by 9.85% averagely by employing such inlaid induction coil design.
As demonstrated in this work, the study to improve the design of inlaid
induction coil outer shell is quite of profit potential and deserves
investing more effort.

[1] K. W. Klontz, D. M. Divan, D. W. Novotny, and R. D. Lorenz,
”Contactless power delivery system for mining applications,” IEEE
Trans. Ind. Appl., vol. 31, no. 1, pp. 27-35, 1995.
[2] B. J. Heeres, D. W. Novotny, D. M. Divan, and R. D. Lorenz,
”Contactless underwater power delivery,” in Proc. IEEE PESC, 1994,
pp. 418-432.
[3] H. Sakamoto, K. Harade, S. Washimiya, and K. Takehara,
“LargeAir-Gap Coupler for Inductive Charger,” IEEE Trans. Magn.,
vol.35, pp.3526-3528, Sept. 1999.
[4] D. Divan, “Low-Stress Switching for Efficiency,” IEEE Spectrum,
vol. 33, pp.33-39, Dec. 1996.
[5] R. Severns, E. Yeow, G. Woody, J. Hall, and J. Hayes,“An
Ultra-Compact Transformer for a 100 W to 120 kW Inductive Coupler
for Electric Vehicle Battery Charging,” IEEE APEC '96Conf. Proc.,
Vol. 1, pp.32-38, March 1996.
[6] J. G. Hayes, “Battery Charging Systems for Electric Vehicles,”
Electric Vehicles - A Technology Roadmap for the Future (Digest
No.1998/262), IEE Colloquium on., pp. 4/1-4/8, May 1998.
[7] Y. Jang and M. M. Jovanovic, “A contactless electrical energy
transmission system for portable-telephone battery chargers,” IEEE
Trans. Ind. Electron., vol. 50, no 3, pp. 520-527, 2003.
[8] B. Choi, J. Nho, H. Cha, T. Ahn, and S. Choi, “Design and
implementation of low-profile contactless battery charger using
planar printed circuit board windings as energy transfer device,” IEEE
Trans. Ind. Electron., vol. 51, no 1, pp. 140-147, 2004.
[9] Y. Jang and M. M. Jovanovic, “A soft-switched contactless
Battery charger with robust local controllers,”in proc. IEEE
INTELEC, 2003, pp. 473-479.
[10]張文亮，“優游於科學與文學的浪漫騎士──奧斯特與電
磁學”，行政院國家科學委員會網站。
[11]K, Finkenzeller, RFID HANDBOOK. 2nd ed., Wiley, 2003.
[12]萬泰麟， “非接觸式感應饋電技術應用於鎳鎘電池充電之研究”，國立成功大學電機研究所碩士論文，民國96年6月。
[13]萬泰麟，“非接觸式感應充電技術應用於小家電裝置之研究”，國立成功大學電機研究所碩士論文，民國96年6月。
[14]謝沐田編著，“高低頻變壓器設計”， 全華科技圖書。
[15]陳政勇，“感應式能量與訊號傳輸之智慧型電源供應系統”國
立中央大學電機研究所碩士論文，民國94年7月。
[16]陳澄河，“創造無限可能的高分子材料”，科學發展2005年5月，
389期。
[17]富強鑫網站。
[18]台塑網站。
[19]張曉佳、陳宗伯、黃運雄， “射出成型與模具”研討會資料。
[20]陳夏宗教授，“先進射出成型技術”，中原大學機械系，2002。
[21]精密機械產業資訊 “內嵌紡織品射出在汽車內裝上的運用”
2000年1月。