無線電力傳輸應用於手持通訊設備充電系統研究

Wireless Power Transmission System Development for Charging Mobile Phone

藍文智(Wen-Chih Lan)

指導教授 ： 李達生

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2007年)

摘要

本研究嘗試開發一套利用光能對手持式通訊設備鋰電池進行充電之裝置，裝置利用已成熟發展之太陽光電板，結合PWM (Pulse width modulation) 充電控制系統，可擺脫傳統充電器線路的束縛，達成無線充電之目的，即只需在有光源的區域即可進行電力補充。本研究嘗試以手持設備可接受面積之太陽能板，其面積僅為5 cm長 x 5 cm寬，依其行動通訊設備所需電力規格，配合自行製作之PWM充電控制系統對設備鋰電池進行充電，以期成為手持式行動設備另一電源補充方式。實驗中驗證串連兩片單晶矽太陽能板模組，先以小電流充電後再調控為大電流續充，待電壓達到額定電壓後再以定電壓充電至額定容量，依此模式充電，在不需變壓器情況下，充電9小時可使行動通訊設備待機6.5小時，證實無線充電概念之可行性。

關鍵字

行動通訊設備 ； 太陽能板 ； PWM充電控制系統

並列摘要

This study attempted to develop a device that charges lithium batteries for mobile communication equipment by means of light energy. This device used a highly developed solar energy photovoltaic cell and combined with a pulse width modulation (PWM) charge control system to be freed from the bonding of traditional charge circuits and achieve the goal of wireless charging. This means the battery could be charged in an area where a light source is available. This study first aimed to use solar energy photovoltaic cells sized 5x5 cm (LengthxWidth) that are suitable for mobile communication equipment, based on its power specification requirements. Then, a homemade PWM charge control system was to be incorporated in order to charge the lithium battery. Finally, the creation of another approach to electrical charging for mobile equipments was attempted. Two pieces of single crystal solar energy cell module were connected and the charging used initially a small current, followed by a large current. After the voltage reached a certain level, the battery was charged at this voltage level until it became fully charged. By using this method to charge the battery without a need for a transformer, a 9 hours charge can support a mobile communication equipment on standby for 6.5 hours. This research finding demonstrates the potential of the concept of wireless charging.

並列關鍵字

Mobile communication apparatus ； Solar cell ； PWN control system

參考文獻

[3] J. P. Benner and L. Kazmerski, "Photovoltaic gaining greater visibility," IEEE Spectrum, vol. 26, 1999, pp. 34-42.

[4] K. H. Hussein, I. Muta, T. Hoshino and M. Osakada, "Maximum photovoltaic power tracking：An algorimthon for rapidly changing atmospheric conditions," IEEE Proc, Vol. 142, no. 1, 1995, pp.59-64.

[7] M. A. Green, Solar Cells：Operating Principles, Technology, and System Applications, Baker & Taylor Books, 1982, pp.4-6 and pp.85-96.

[8] M. Matsui, T. Kitano and D. H. Xu, "A new maximum photovoltaic power tracking control scheme based on power equilibrium at DC link," Industrial Electronics Society Proceedings, The 25th Annual Conference of the IEEE, 1999, pp.804-809.

[9] P. Midya, P. T. Kerin, R. J. Turnbull, R. Reppa and J. Kimball, "Dynamic maximum power point tracker for photovoltaic applications," IEEE Power Electronics Specialists Conference, The 27th Annual, 1996, pp.1710-1716.