- 學位論文
應用於可攜帶裝置之陣列掃描式非接觸式充電平台
Design of coil-arrayed scanning contactless charging platform for portable devices
摘要
本論文以無線功率傳輸原理設計一非接觸式充電平台，將可對攜帶式裝置或其他電子裝置進行充電。充電平台和電子裝置間是採用電磁感應方式傳輸功率，並藉由繞線式線圈達到非接觸式功率傳輸，充電平台使用無穩態振盪器和計數器控制線圈切換開關頻率，使陣列線圈激發並節省功率消耗。 本篇論文首先比較感應線圈各參數對於磁場分布之影響，歸納出最佳的陣列線圈結構，並依此原則設計線圈作為單位線圈，在依據無線充電聯盟所訂定的A3線圈排列規則，設計出由七組線圈組合成的六角形陣列結構。別於以往的非接觸式充電系統，本論文的陣列結構除了保有原系統的傳輸效率之外並能夠擴大電子設備擺放面積，提升電子產品在充電上的便利性。經由實驗測試驗證，當感應線圈平行位移等於0mm時，也就是在初級側中心處，次級側感應接收經由電壓調整電路輸出直流電壓為穩定4.97V。次級側最大輸出功率可達1.98W，最大傳輸效率為58%。
並列摘要
This thesis proposes an universal contactless charging platform, which allowed for the placement of portable device or other mobile devices placed and charged. By wound-wire structure and electromagnetic induction, contactless power transmission could be achieved between platform and electronic products. The astable multivibrator oscillator and counter is used to control coil switch frequency in the designed charging platform. This thesis started from the parameters of induction coil for the magnetic field distribution, and optimize the arrayed structure of coils. With this optimization, the coil could be designed as an unit coil, and the coil arrangement rule is complies with wireless power consortium A3 standard, which consists of seven coils arranged in a hexagonal array structure. Different from the other contactless charger, arrayed structure not only enhance the sensing area but also increase usage convenience. The experimental results show that the secondary-side output voltage is 4.97V when the induction coil displacement is 0mm. The maximum power output is 1.98W and a maximum transmission efficiency of 58% is attainable.