COMMUNICATION DEVICE OF NON-CONTACT POWER SUPPLY DEVICE

To provide a communication device of a non-contact power supply device, capable of firstly performing a cold start, and an initial authentication of a power reception target, as well as, secondary achieving the same in a manner excellent in terms of cost, reliability and the like.SOLUTION: Based on a mutual induction action of electromagnetic induction at a power supply stage A, a non-contact power supply device 2 supplies electric power from a power transmission coil L1 on a power transmission side to a power reception coil L2 on a power reception side, with both coils adjacently positioned facing each other interposing an air gap G. A pair of communication devices 1 is provided respectively on a pair of the power transmission side and the power reception side, and transmits and receives power supply information. At a search stage B preceding the power supply stage A, the pair of communication devices can transmit and receive initial authentication information authenticating that the power transmission coil L1 and the power reception coil L2 are positioned facing each other. Initial authentication is obtained based on the fact that a micro magnetic field D is formed around the power transmission coil L1 at the search stage B and the reception coil L2 enters the micro magnetic field D.SELECTED DRAWING: Figure 1 【課題】 第１に、コールドスタートおよび受電相手の初期認証ができると共に、第２に、これらがコスト面や信頼性等にも優れて実現される、非接触給電装置の通信装置を提案する。【解決手段】非接触給電装置２は、給電ステージＡにおいて、電磁誘導の相互誘導作用に基づき、送電側の送電コイルＬ１から受電側の受電コイルＬ２に、エアギャップＧを存し近接対峙位置して電力を供給する。通信装置１は、送電側と受電側に対をなして設けられ、給電情報を送受信し、給電ステージＡに先立つサーチステージＢにおいては、送電コイルＬ１と受電コイルＬ２が対峙位置決めされた旨の初期認証情報を、送受信可能である。初期認証は、サーチステージＢにおいて、送電コイルＬ１の周囲に微小磁界Ｄが形成され、受電コイルＬ２が微小磁界Ｄの圏内に入ったことに基づき、得られる。【選択図】図１