Study on Contactless Multi-load Charging Platform with Localized Excitation Inductive Structure

• Main Authors: Hong-Wei Lai, 賴弘偉
• Other Authors: Jia-You Lee
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/50700716442697072943

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 97 === This thesis investigates the charging system based on contactless power transmission techniques for proposes a universal portable product charging platform. This platform is formed with several Pot-cores, and divided into three sections. The position of the secondary side induction structure on the charging platform can be detected by sensing coils, and according to detection result excites the localized charging platform. When several portable products are putted into platform, they can be charge independently by power management circuit. The system uses Hall component to sense primary inductance current, and via microchip control circuit to adjust operation frequency of system maintain on primary resonant frequency in charge platform. The system uses deviated protection structure to avoid receiving insufficient energy when the secondary side is deviated from the primary side. The secondary induction structure is established by planar induction coil and planar core that the thickness is 2.35mm. Experimental results show that the power transmission efficiency of contactless inductive structure is 63.55% under 1mm gap.