公开(公告)号：US20150311744A1

公开(公告)日：2015-10-29

申请号：US14795109

申请日：2015-07-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koichiro KAMATA

IPC: H02J7/02 ,  H02J5/00

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J7/045 ,  H02J50/90

Abstract: An object is to provide a wireless power feeding system using the resonance method, which can increase power transmission efficiency. The wireless power feeding system includes a power transmission coil electrically connected to a high-frequency power supply, a power transmission resonance coil for transmitting power by electromagnetic induction with the power transmission coil, a power reception resonance coil for exciting high-frequency power by magnetic resonance, a load coil for exciting high-frequency power by electromagnetic induction with the power reception resonance coil, a load, and a variable element. The load includes a microprocessor for controlling the impedance of the load, a battery charger, and a battery. The battery charger is configured to charge the battery with the high-frequency power excited by the load coil.

Abstract translation: 本发明的目的是提供一种使用谐振方法的无线馈电系统，其可以提高电力传输效率。 无线供电系统包括电连接到高频电源的电力传输线圈，用于通过电力传输线圈通过电磁感应传输电力的电力传输谐振线圈，用于通过磁性激发高频电力的功率接收谐振线圈 谐振，用于通过电力感应与受电共振线圈，负载和可变元件激发高频功率的负载线圈。 负载包括用于控制负载的阻抗的微处理器，电池充电器和电池。 电池充电器配置为由负载线圈激发的高频电源为电池充电。

公开(公告)号：US20140347777A1

公开(公告)日：2014-11-27

申请号：US14456275

申请日：2014-08-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koichiro KAMATA

IPC: H02H9/04 ,  H01L27/02

CPC classification number: H02M1/32 ,  G06K19/0701 ,  G06K19/0715 ,  G06K19/07749 ,  H01L27/0248 ,  H01L27/0285 ,  H01L27/1225 ,  H02H9/046 ,  H02J7/025 ,  H02J17/00 ,  H02J50/12 ,  H02M7/217

Abstract: To prevent damage on an element even when a voltage high enough to break the element is input. A semiconductor device of the invention operates with a first voltage and includes a protection circuit which changes the value of the first voltage when the absolute value of the first voltage is higher than a reference value. The protection circuit includes: a control signal generation circuit generating a second voltage based on the first voltage and outputting the generated second voltage; and a voltage control circuit. The voltage control circuit includes a transistor which has a source, a drain, and a gate, and which is turned on or off depending on the second voltage input to the gate and thus controls whether the value of the first voltage is changed based on the amount of current flowing between the source and the drain. The transistor also includes an oxide semiconductor layer.

Abstract translation: 即使输入足够高的电压来破坏元件，也能防止元件的损坏。 本发明的半导体器件以第一电压工作，并且包括当第一电压的绝对值高于参考值时改变第一电压的值的保护电路。 所述保护电路包括：控制信号生成电路，其基于所述第一电压生成第二电压，并输出所生成的第二电压; 和电压控制电路。 电压控制电路包括具有源极，漏极和栅极的晶体管，并且其根据输入到栅极的第二电压而导通或截止，从而基于第一电压的值是否改变第一电压的值 在源极和漏极之间流动的电流量。 晶体管还包括氧化物半导体层。

公开(公告)号：US20130147281A1

公开(公告)日：2013-06-13

申请号：US13705317

申请日：2012-12-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koichiro KAMATA

IPC: H02J17/00

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/80

Abstract: A contactless power feeding system includes a power transmitting device and a power receiving device. The power transmitting device includes a first AC power source configured to generate an AC power with a first frequency, a second AC power source configured to generate an AC power with a second frequency which is different from the first frequency, a first electromagnetic induction coil, and a first resonant coil. The power receiving device includes a second resonant coil, a second electromagnetic induction coil, and a power storage unit. Power is wirelessly supplied to the power storage unit at the second frequency by a magnetic resonance phenomenon which occurs between the first resonant coil and the second resonant coil.

Abstract translation: 非接触供电系统包括电力传输装置和电力接收装置。 电力传输装置包括：第一AC电源，其被配置为产生具有第一频率的AC电力;第二AC电源，被配置为产生具有与第一频率不同的第二频率的AC电力;第一电磁感应线圈， 和第一谐振线圈。 电力接收装置包括第二谐振线圈，第二电磁感应线圈和电力存储单元。 通过发生在第一谐振线圈和第二谐振线圈之间的磁共振现象，以第二频率将功率无线地提供给蓄电单元。

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：US20160336455A1

公开(公告)日：2016-11-17

申请号：US15159182

申请日：2016-05-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koichiro KAMATA

IPC: H01L29/786 ,  G06K19/077 ,  H01L23/66 ,  H01L27/06 ,  H01L49/02

CPC classification number: H01L29/7869 ,  G06K19/07775 ,  H01L23/66 ,  H01L27/0629 ,  H01L28/20 ,  H01L28/40 ,  H01L29/78693 ,  H01L29/78696 ,  H01L2223/6677 ,  H03C1/36 ,  H04M2201/04 ,  H04M2201/06

Abstract: A modulation circuit includes a load and a transistor serving as a switch. The transistor has an oxide semiconductor layer in which hydrogen concentration is 5×1019/cm3 or less. The off-state current of the transistor is 1×10−13 A or less. A modulation circuit includes a load, a transistor serving as a switch, and a diode. The load, the transistor, and the diode are connected in series between the terminals of an antenna. The transistor has an oxide semiconductor layer in which hydrogen concentration is 5×1019/cm3 or less. An off-state current of the transistor is 1×10−13 A or less. On/off of the transistor is controlled in accordance with a signal inputted to a gate of the transistor. The load is a resistor, a capacitor, or a combination of a resistor and a capacitor.

Abstract translation: 调制电路包括负载和用作开关的晶体管。 该晶体管具有氢浓度为5×1019 / cm3以下的氧化物半导体层。 晶体管的截止电流为1×10-13A或更小。 调制电路包括负载，用作开关的晶体管和二极管。 负载，晶体管和二极管串联连接在天线的端子之间。 该晶体管具有氢浓度为5×1019 / cm3以下的氧化物半导体层。 晶体管的截止电流为1×10-13A或更小。 根据输入到晶体管的栅极的信号来控制晶体管的导通/截止。 负载是电阻器，电容器或电阻器和电容器的组合。

公开(公告)号：US20160111896A1

公开(公告)日：2016-04-21

申请号：US14982331

申请日：2015-12-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koichiro KAMATA

IPC: H02J5/00

CPC classification number: H02J7/025 ,  F02P3/02 ,  H01F38/14 ,  H02J5/005 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H02M1/12 ,  H02M3/06

Abstract: Provided is a power receiving device in which supply of power from a power supply device can be stopped while a reduction in Q-value is suppressed. The power receiving device includes a first antenna which forms resonant coupling with an antenna of the power supply device; a second antenna which forms electromagnetic induction coupling with the first antenna; a rectifier circuit including a plurality of switches and performing a first operation or a second operation depending on whether the plurality of switches is ON or OFF, the first operation being an operation in which voltage applied from the second antenna is rectified to be outputted, and the second operation being an operation in which a pair of power supply points is short-circuited; a load to which the voltage is applied; and a control circuit which generates a signal for selecting ON or OFF of the plurality of switches.

公开(公告)号：US20150318714A1

公开(公告)日：2015-11-05

申请号：US14797833

申请日：2015-07-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koichiro KAMATA

IPC: H02J5/00

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J50/40 ,  H04B5/0037 ,  H04B5/0093

Abstract: In electric power supply through wireless signals, electric power is supplied efficiently, even when distance fluctuation is caused between an electric power transmitting device and an electric power receiving device. Even when distance fluctuation is caused between the electric power transmitting device for supplying electric power with the use of wireless signals and the electric power receiving device for receiving electric power supplied from the electric power transmitting device, the Q value of the electric power transmitting device is adjusted to optimize the transmission efficiency. The impedance of a resonance circuit of the electric power transmitting device is fluctuated at a constant frequency, the resulting reflected wave is detected as a response signal by the electric power transmitting device, and the Q value of the electric power transmitting device is adjusted to optimize the transmission efficiency.

Abstract translation: 在通过无线信号进行供电的情况下，即使在电力传输装置和电力接收装置之间产生距离变动，也能够有效地供给电力。 即使在使用无线信号的电力供给用电力发送装置和从电力发送装置供给的电力的电力接收装置之间产生距离变动的情况下，电力发送装置的Q值为 调整以优化传输效率。 电力传输装置的谐振电路的阻抗以恒定的频率波动，由电力传输装置将所得到的反射波作为响应信号进行检测，并调整电力发送装置的Q值以优化 传输效率。

公开(公告)号：US20150214918A1

公开(公告)日：2015-07-30

申请号：US14680169

申请日：2015-04-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koichiro KAMATA ,  Shinya OKANO ,  Misako SATO ,  Shuhei MAEDA

IPC: H03H7/38 ,  H03D1/02 ,  H03C1/36 ,  H02J5/00 ,  H01F38/14

CPC classification number: H03H7/38 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H03C1/36 ,  H03D1/02

Abstract: A resonant power feeding system that can provide high power transmission efficiency between a power feeding device and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power feeding device and the power reception device. High power transmission efficiency between the power feeding device and the power reception device is obtained by addition of a structure for adjusting the matching condition to both the power reception device and the power feeding device. Specifically, a transmission-reception circuit and a matching circuit are provided in both the power reception device and the power feeding device, and wireless signals for adjusting the matching circuit are transmitted and received through a resonant coil. Thus, the power feeding device can efficiently supply power to the power reception device without adjusting the oscillation frequency.

Abstract translation: 一种谐振馈电系统，其能够在馈电装置和受电装置之间提供高功率传输效率，而不需要根据供电装置和受电装置之间的距离动态地控制振荡频率。 通过添加用于调节与受电装置和供电装置的匹配条件的结构，可以获得供电装置和受电装置之间的高功率传输效率。 具体地，在受电装置和供电装置中设置发送接收电路和匹配电路，通过谐振线圈发送接收用于调整匹配电路的无线信号。 因此，馈电装置可以在不调整振荡频率的情况下有效地向受电装置供电。

公开(公告)号：US20180152054A1

公开(公告)日：2018-05-31

申请号：US15884698

申请日：2018-01-31

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koichiro KAMATA

IPC: H02J50/12 ,  H04B5/00 ,  H02J5/00 ,  H02J7/00

Abstract: When a portable electronic appliance is provided with two systems, a wireless power-feeding system and a wireless communication system, each system requires two power-receiving devices, a coil and an antenna, leading to a problem of increased electronic appliance size and cost. Wireless power feeding employs the resonance method and uses a resonance coil using the resonance method and a power-receiving coil that receives power from the resonance coil. At least one of the resonance coil and the power-receiving coil can also be used as an antenna for wireless communication. Thus, a power-receiving device that can be used for two systems, wireless power feeding and wireless communication, can be provided.

公开(公告)号：US20180115194A1

公开(公告)日：2018-04-26

申请号：US15850321

申请日：2017-12-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koichiro KAMATA

IPC: H02J50/12 ,  H02J50/90 ,  H02J5/00 ,  H01F38/14 ,  H02J7/02 ,  H02J50/40 ,  H02J50/80

CPC classification number: H02J50/12 ,  H01F27/006 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/40 ,  H02J50/80 ,  H02J50/90

Abstract: A power feeding device utilizing an electromagnetic resonance coupling method and a contactless power feeding system can be provided. A coupling coefficient of electromagnetic induction coupling in the power feeding device and/or the inside of a power receiving device is optimized to improve electric power transmission efficiency of a resonance frequency regardless of positions of the power feeding device and the power receiving device. Provided is a power feeding device or a contactless power feeding system in which an S11 parameter which is a reflection component of electric power output from a high-frequency power source of the power feeding device is monitored, and one or both of positions of a transmission coil and a first resonant coil in the power feeding device and positions of a reception coil and a second resonant coil in a power receiving device are changed to adjust a coupling coefficient of electromagnetic induction coupling.