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公开(公告)号：JP2020092596A
公开(公告)日：2020-06-11
申请号：JP2020009688
申请日：2020-01-24
Applicant: APPLE INC
Inventor： EUGENIO JR SIA LECIAS , ZENG JUNBO , SAINING REN , DANIEL JAMES ROBERTSON , MICHAEL NASA , RON RAFER FLORESCA , ARUNIM KUMAR , ALI ABDOLKHANI
Abstract: 【課題】負荷への供給電力を調整可能な誘導電力伝送デバイスを提供する。【解決手段】誘導電力伝送システムシステム1において、送信コイル7及び送信キャパシタ8を有する送信共振回路6と、送信コイルに磁気結合された電力フロー制御コイル11と、可変インピーダンス12と、予め定められた基準に基づいて可変インピーダンスのインピーダンス値を決定する送信コントローラ9と、を備える。予め定められた基準は、負荷へ供給される電力を実質的に調整すること、共振回路の共振周波数を予め定められた周波数へ実質的にチューニングすること、電力伝送コイルに関連する磁界の周波数を調節すること、及び/または、対応する結合電力伝送コイルへ電力伝送コイルが反射させるインピーダンスを調節すること、を含む。【選択図】図1
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公开(公告)号：GB2585267A
公开(公告)日：2021-01-06
申请号：GB202004843
申请日：2020-04-01
Applicant: APPLE INC
Inventor： SAINING REN , HO FAI LEUNG
Abstract: Wireless power system with a wireless power transmitting device and a wireless power receiving device 24. The receiving device has first and second coils 48 to receive wireless power signals and an adjustable rectifier circuitry 50 (ARC) coupled to the coils, outputting DC power. The ARC operates in first and second modes. First mode: the ARC forms a full-bridge rectifier. Second mode: the ARC forms a pair of parallel half-bridge rectifiers. The coils are connected in series via a node N1. The ARC may have an array of four diodes D1-D4, and a transistor T5 coupled to the node N1. A control circuitry turns the transistor T5 on/off to adjust the ARC between modes. In another embodiment, the coils, ARC and control circuitry are disposed within a housing and display, e.g. mobile phone. The ARC is configurable between receiving AC signals from the coils that are in phase with one another, and receiving AC signals from the coils that are out of phase with one another, i.e. the ARC can adjust according to whether the coils’ respective received magnetic fields are in- or out-of-phase with one another.
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公开(公告)号：GB2585267B
公开(公告)日：2021-06-30
申请号：GB202004843
申请日：2020-04-01
Applicant: APPLE INC
Inventor： SAINING REN , HO FAI LEUNG
Abstract: Wireless power system with a wireless power transmitting device and a wireless power receiving device 24. The receiving device has first and second coils 48 to receive wireless power signals and an adjustable rectifier circuitry 50 (ARC) coupled to the coils, outputting DC power. The ARC operates in first and second modes. First mode: the ARC forms a full-bridge rectifier. Second mode: the ARC forms a pair of parallel half-bridge rectifiers. The coils are connected in series via a node N1. The ARC may have an array of four diodes D1-D4, and a transistor T5 coupled to the node N1. A control circuitry turns the transistor T5 on/off to adjust the ARC between modes. In another embodiment, the coils, ARC and control circuitry are disposed within a housing and display, e.g. mobile phone. The ARC is configurable between receiving AC signals from the coils that are in phase with one another, and receiving AC signals from the coils that are out of phase with one another, i.e. the ARC can adjust according to whether the coils’ respective received magnetic fields are in- or out-of-phase with one another.
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