目前TWS 藍牙無線耳機已經較為大眾接受,TWS藍牙耳機充電盒雖然是耳機附件,但是它的作用至關重要,由于耳機盒設計比較精致,體積較小,導致電池容量不高,需要長途物流、靜默擱置,所以超低自放電是一項硬性指標.但目前TWS藍牙充電耳機盒大都還是使用micro USB 連接線來對藍牙無線耳機充電盒充電,使用者外出必須攜帶 Power Bank +micro USB, Type C (Android) + Lightning (iPhone) Apple等等線材,若是Power Bank 也是無線充電是否可以改善如此多線的麻煩事. 所以基于方便性及相容性將Semtech 無線充電RX 5W(Qi)方案導入無線耳機充電盒來應用,也可以將無線充電耳機盒設計成防水防塵等級的無線充電盒.使用Semtech RX 5W(Qi)無線充電并可以相容于TX(Qi)無線充電板.
近距電能傳輸——高效安全近距電能傳輸一般基于電磁感應原理進行。在此技術基礎上,當接收器鄰近發射器時才會進行電能傳輸。電磁感應技術的歷史長達百年,多年米一直應用于各類電子產品中—如此普及全因其簡單、高效以及安全技術概覽以下將為你簡要介紹無線電能傳輸技術。System Overview(Communication)Receiver sends messagesTo provide control information to the transmitterBy load modulation on the power signaTransmitter receives messagesTo receive control information frorn the recelverBy de-modulation of the reflected loadPower Pick Up( Receiver)Secondary coil (L Serial resonance capacitor (C) for efficient power transfer Parallel resonance capacitor(C, )for detection purposes Rectifier: full bridge(diode, or switched)+ capacitor Output switch for(dis)connecting the loadReceiver modulates load by Switching modulation resistor(R,n),or Switching modulation capacitor(Ca)Transmitter de-modulates reflected load by Sensing pnmary coil curent (p)and/o Sensing primary coil voltage (V,