公开(公告)号：US20170237470A1

公开(公告)日：2017-08-17

申请号：US15583446

申请日：2017-05-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Misako MIWA ,  Koichiro KAMATA ,  Shuhei MAEDA

IPC: H04B5/00 ,  H02J50/80 ,  B60L11/18 ,  H02J50/20 ,  H02J7/02

CPC classification number: H04B5/0037 ,  B60L53/12 ,  H02J7/025 ,  H02J50/20 ,  H02J50/80 ,  H04B5/0093

Abstract: A power receiving device and a power feeding system which are capable of performing communication and power feeding at the same time are provided. Further, a power receiving device and a power feeding system which are capable of stably performing communication during power feeding are provided. One embodiment of the present invention relates to a power receiving device which includes an antenna for communication and power feeding that receives AC power, a rectifier circuit that rectifies the received AC power including the modulation signal into DC power, a smoothing circuit that smoothes the resulting DC power, a power storage device that stores the smoothed DC power, a communication control unit that analyzes the modulation signal included in the AC power, and a transformer that is positioned between the antenna and the rectifier circuit and changes a reference potential of the AC power, and a power feeding device.

公开(公告)号：US20160315505A1

公开(公告)日：2016-10-27

申请号：US15202607

申请日：2016-07-06

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Misako MIWA

IPC: H02J50/12 ,  H02J7/02

CPC classification number: H02J50/12 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/40

Abstract: Provided is a power transmitting device, a power feeding system, and a power feeding method in which power loss is cut by increasing power use efficiency and power can be supplied to a power feeding user (a power receiving device) with high power transmission efficiency. Depending on a power feeding state (e.g., resonant frequency of a power transmitting resonance coil is not the same as that of a power receiving resonance coil, or the influence of their positional relation), power transmitted from a power source portion of the power transmitting device is reflected to the power transmitting coil side by the power transmitting resonance coil. Further, a power recovering function (circulation function) for power reflected to the power transmitting device is provided to recover the power reflected to the power transmitting coil side and to reuse it for power transmission.

Abstract translation: 提供一种能够通过提高电力利用效率来切断电力损失的电力传送装置，供电系统以及供电方式，能够向输送效率高的供电用户（电力接收装置）供电。 根据供电状态（例如，发送功率的谐振线圈的谐振频率与受电谐振线圈的谐振频率不同或其位置关系的影响），从发送功率的电源部分发送的功率 设备通过电力传输谐振线圈反射到发射线圈侧。 此外，提供用于向发送功率发送装置反射的功率的功率恢复功能（循环功能），以恢复向发送线圈侧反射的功率，并将其重新用于功率传输。

公开(公告)号：US20130249309A1

公开(公告)日：2013-09-26

申请号：US13804883

申请日：2013-03-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Misako MIWA ,  Koichiro Kamata ,  Shuhei Maeda

IPC: H04B5/00

CPC classification number: H04B5/0037 ,  B60L11/182 ,  H02J7/025 ,  H02J50/20 ,  H02J50/80 ,  H04B5/0093

Abstract: A power receiving device and a power feeding system which are capable of performing communication and power feeding at the same time are provided. Further, a power receiving device and a power feeding system which are capable of stably performing communication during power feeding are provided. One embodiment of the present invention relates to a power receiving device which includes an antenna for communication and power feeding that receives AC power, a rectifier circuit that rectifies the received AC power including the modulation signal into DC power, a smoothing circuit that smoothes the resulting DC power, a power storage device that stores the smoothed DC power, a communication control unit that analyzes the modulation signal included in the AC power, and a transformer that is positioned between the antenna and the rectifier circuit and changes a reference potential of the AC power, and a power feeding device.

Abstract translation: 提供能够同时进行通信和供电的电力接收装置和供电系统。 此外，提供能够在供电期间稳定地进行通信的受电装置和供电系统。 本发明的一个实施例涉及一种电力接收装置，其包括用于通信和馈电的天线，其接收AC电力;整流电路，将包括调制信号的所接收的AC电力整流为DC电力;平滑电路， 直流电力，存储平滑的直流电力的蓄电装置，分析交流电源中包含的调制信号的通信控制单元和位于天线与整流电路之间的变压器，并改变交流电的参考电位 电源和馈电装置。

公开(公告)号：US20170040891A1

公开(公告)日：2017-02-09

申请号：US15331029

申请日：2016-10-21

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Kei TAKAHASHI ,  Koichiro KAMATA ,  Misako MIWA ,  Shuhei MAEDA

IPC: H02M3/156 ,  H02J7/02

CPC classification number: H02M3/156 ,  G05F3/08 ,  H02J5/005 ,  H02J7/00 ,  H02J7/025 ,  H02J50/12 ,  H02M2001/0022

Abstract: A circuit capable of keeping input impedance constant is provided. Further, a circuit which can contribute to improvement in power feeding efficiency in power feeding by a magnetic resonance method is provided. A voltage (a former voltage) proportional to a direct-current voltage input to a DC-DC converter from the outside and a voltage (a latter voltage) proportional to a current input from the outside are detected, and the ratio of the former voltage and the latter voltage are held constant. Accordingly, input impedance can be kept constant. Further, impedance conversion is performed in the DC-DC converter. Thus, even when the battery in which power feeding is performed exists on an output side of the DC-DC converter, input impedance can be kept constant. Consequently, power can be supplied to a power receiving device including the DC-DC converter and the battery with high power feeding efficiency by a magnetic resonance method.

Abstract translation: 提供能够保持输入阻抗恒定的电路。 此外，提供了可以通过磁共振方法有助于提高馈电的馈电效率的电路。 检测与从外部输入到DC-DC转换器的直流电压成比例的电压（前一个电压）和与从外部输入的电流成比例的电压（后一个电压），并且前一个电压 并且后一电压保持恒定。 因此，输入阻抗可以保持恒定。 此外，在DC-DC转换器中进行阻抗转换。 因此，即使在DC-DC转换器的输出侧存在进行供电的电池，也可以保持输入阻抗恒定。 因此，可以通过磁共振方式向具有高功率馈送效率的DC-DC转换器和电池的电力接收装置供电。

公开(公告)号：US20160187946A1

公开(公告)日：2016-06-30

申请号：US15059705

申请日：2016-03-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Misako MIWA ,  Yutaka SHIONOIRI

IPC: G06F1/26 ,  G06F1/32

CPC classification number: G06F1/26 ,  G06F1/28 ,  G06F1/3203 ,  G06F1/3278 ,  G06F1/3287 ,  Y02D10/157 ,  Y02D10/171

Abstract: Provided is a power reception device in which power consumption at the time of wireless power supply is reduced. A power reception device is provided with a power reception control device capable of temporarily stopping supply of power supply voltage to a communication control unit for controlling communication in a break period of communication intermittently performed between a power transmission device and a power reception device. In the structure, a clock signal is generated on the basis of a power receiving signal transmitted from the power transmission device, and a period of communication intermittently performed can be measured using the clock signal. Further, a structure may be employed in which supply of power supply voltage to the communication unit in the power reception control device can be stopped in the break period of the communication.

公开(公告)号：US20140015332A1

公开(公告)日：2014-01-16

申请号：US13934290

申请日：2013-07-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Misako MIWA

IPC: H01F38/14

CPC classification number: H02J50/12 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/40

Abstract: Provided is a power transmitting device, a power feeding system, and a power feeding method in which power loss is cut by increasing power use efficiency and power can be supplied to a power feeding user (a power receiving device) with high power transmission efficiency. Depending on a power feeding state (e.g., resonant frequency of a power transmitting resonance coil is not the same as that of a power receiving resonance coil, or the influence of their positional relation), power transmitted from a power source portion of the power transmitting device is reflected to the power transmitting coil side by the power transmitting resonance coil. Further, a power recovering function (circulation function) for power reflected to the power transmitting device is provided to recover the power reflected to the power transmitting coil side and to reuse it for power transmission.

Abstract translation: 提供一种能够通过提高电力利用效率来切断电力损失的电力传送装置，供电系统以及供电方式，能够向输送效率高的供电用户（电力接收装置）供电。 根据供电状态（例如，发送功率的谐振线圈的谐振频率与受电谐振线圈的谐振频率不同或其位置关系的影响），从发送功率的电源部分发送的功率 设备通过电力传输谐振线圈反射到发射线圈侧。 此外，提供用于向发送功率发送装置反射的功率的功率恢复功能（循环功能），以恢复向发送线圈侧反射的功率，并将其重新用于功率传输。

公开(公告)号：US20130290747A1

公开(公告)日：2013-10-31

申请号：US13865418

申请日：2013-04-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Misako MIWA ,  Yutaka SHIONOIRI

IPC: G06F1/26

CPC classification number: G06F1/26 ,  G06F1/28 ,  G06F1/3203 ,  G06F1/3278 ,  G06F1/3287 ,  Y02D10/157 ,  Y02D10/171

Abstract: Provided is a power reception device in which power consumption at the time of wireless power supply is reduced. A power reception device is provided with a power reception control device capable of temporarily stopping supply of power supply voltage to a communication control unit for controlling communication in a break period of communication intermittently performed between a power transmission device and a power reception device. In the structure, a clock signal is generated on the basis of a power receiving signal transmitted from the power transmission device, and a period of communication intermittently performed can be measured using the clock signal. Further, a structure may be employed in which supply of power supply voltage to the communication unit in the power reception control device can be stopped in the break period of the communication.

Abstract translation: 提供了一种在无线电力供应时的功耗降低的电力接收装置。 电力接收装置设置有能够暂时停止向在电力传输装置和电力接收装置之间间歇地进行的通信的中断期间的通信控制用的通信控制单元供给电源电压的电力接收控制装置。 在该结构中，基于从电力传输装置发送的电力接收信号生成时钟信号，并且可以使用时钟信号来测量间歇地进行的通信周期。 此外，可以采用这样的结构，其中在通信的断开期间能够停止向受电控制装置中的通信单元供电的电源电压。