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    • 3. 发明申请
    • POWER RECEIVING CONTROL DEVICE, POWER RECEIVING DEVICE, AND ELECTRONIC APPARATUS
    • US20100013321A1
    • 2010-01-21
    • US12503366
    • 2009-07-15
    • Kota ONISHIMasayuki KAMIYAMANobutaka SHIOZAKIKentaro YODATakahiro KAMIJO
    • Kota ONISHIMasayuki KAMIYAMANobutaka SHIOZAKIKentaro YODATakahiro KAMIJO
    • H01F38/14
    • G08C17/04H01F2038/143H02J7/025H02J50/12H02J50/60H02J50/80H02J50/90
    • A power receiving control device provided to a power receiving device included in a contactless power transmission system that transmits electric power from a power transmission device to the power receiving device by electromagnetically coupling a primary coil and a secondary coil so as to feed the electric power to a load serving as a power feeding object from a voltage output node of the power receiving device, which includes a rectifying circuit and a regulator; and transmits a load modulation signal to the power transmission device by load modulation performed by a load modulation section included in the power receiving device, in a period of the power feeding to the load as the power feeding object, includes a power receiving side control circuit controlling an operation of the power receiving device; and a power supply control signal output terminal for outputting a power supply control signal by which the power feeding to the load is temporarily stopped In the device, the power receiving side control circuit turns on a switch circuit provided between an input node and an output node of the regulator, based on detection of lowering of power feeding capability to the load, so as to put a bypass path, which directly connecting the input node and the output node of the regulator, in an ON state; turns off the switch circuit so as to forcibly put the bypass path in an OFF state, in a case where the power feeding to the load is temporarily stopped in a period during which the bypass path is formed, at one of timing at which a voltage level of the power supply control signal outputted from the power supply control signal output terminal is switched from a non-active level to an active level so as to temporarily stop the power feeding to the load and timing before the power feeding to the load is temporarily stopped; and turns on the switch circuit after releasing the temporary stop of the power feeding to the load so as to return the bypass path to the ON state.
    • 5. 发明申请
    • POWER TRANSMISSION DEVICE, ELECTRONIC INSTRUMENT, AND WAVEFORM MONITORING CIRCUIT
    • 电力传输装置,电子仪器和波形监测电路
    • US20090009006A1
    • 2009-01-08
    • US12167812
    • 2008-07-03
    • Mikimoto JINTakahiro KAMIJOKentaro YODAHaruhiko SOGABEKota ONISHIKen IISAKA
    • Mikimoto JINTakahiro KAMIJOKentaro YODAHaruhiko SOGABEKota ONISHIKen IISAKA
    • H02J17/00
    • H02J50/80H02J7/0011H02J7/025H02J7/045H02J50/12H02J50/60H02J50/90
    • A power transmission device of a non-contact power transmission system includes a waveform monitoring circuit that generates and outputs a waveform-monitoring induced voltage signal based on a coil end signal of a primary coil, and a power transmission control device that controls a power transmission driver that drives the primary coil, the power transmission control device receiving the waveform-monitoring induced voltage signal and detecting a change in waveform of the induced voltage signal to detect a power-reception-side load state. The waveform monitoring circuit includes a first rectifier circuit having a limiter function, the first rectifier circuit including a current-limiting resistor provided between a coil end node where the coil end signal of the primary coil is generated and a monitoring node where the waveform-monitoring induced voltage signal is generated, performing a limiter operation that clamps the induced voltage signal at a high-potential-side power supply voltage, and subjecting the induced voltage signal to half-wave rectification.
    • 非接触式电力传输系统的电力传输装置包括:波形监视电路,其根据初级线圈的线圈端信号生成并输出波形监视感应电压信号;以及电力传输控制装置,其控制电力传输 驱动初级线圈的驱动器,电力传输控制装置接收波形监视感应电压信号,并检测感应电压信号的波形变化,以检测受电方负载状态。 该波形监视电路包括具有限制功能的第一整流电路,该第一整流电路包括一限流电阻器,该限流电阻器设置在产生初级线圈的线圈端信号的线圈端节点与该波形监测 产生感应电压信号,执行将感应电压信号钳位在高电位侧电源电压的限幅器操作,并对感应电压信号进行半波整流。