公开(公告)号：US10403431B2

公开(公告)日：2019-09-03

申请号：US15255965

申请日：2016-09-02

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinichiro Banba ,  Tsuneo Murata ,  Norio Sakai ,  Yoshihito Otsubo ,  Keiichi Ichikawa

IPC: H01F27/29 ,  H01F41/04 ,  H01F41/08 ,  H01F17/06 ,  H01F27/255 ,  H01F27/28 ,  H01F41/02

Abstract: A coil component that includes a coil having a thick coil core and good inductance characteristics and is able to narrow the pitch of a coil electrode is provided. The wiring of a coil electrode in a direction across the direction of a winding axis of the coil electrode includes a plurality of first metal pins and a plurality of second metal pins. By elongating each metal pin, the wiring of the coil electrode is easily elongated in a metal pin direction. Thus, a coil core is easily thickened in the metal pin direction. The wiring of the coil electrode can be formed in the metal pin direction only by arranging the metal pins. Thus, it is possible to provide a coil component that includes a coil having the thick coil core and good inductance characteristics and is able to narrow the pitch of the coil electrode.

公开(公告)号：US10388450B2

公开(公告)日：2019-08-20

申请号：US15715391

申请日：2017-09-26

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Keiichi Ichikawa ,  Tsuyoshi Suesada ,  Kentaro Mikawa

IPC: H01F27/42 ,  H01F27/28 ,  H01F38/30 ,  H02J50/10 ,  H01F27/245 ,  H01F38/14

Abstract: An inductor module includes a laminate where multiple insulator layers are laminated, a main line conductor in the shape of a straight line formed on the laminate, a current detection conductor that is formed on the laminate and magnetically coupled with the main line conductor, and coil conductors that are formed on the laminate and constitute an inductor element. An absolute value of a coupling coefficient between the main line conductor and inductor element, and an absolute value of a coupling coefficient between the current detection conductor and the inductor element, are each smaller than an absolute value of a coupling coefficient between the main line conductor and the current detection conductor. Thus, an inductor module that detects current and is used as an inductor element, and an electric power transmission system including the inductor module, are provided.

公开(公告)号：US09973042B2

公开(公告)日：2018-05-15

申请号：US15155414

申请日：2016-05-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Keiichi Ichikawa

IPC: H02J50/05 ,  H02J50/12 ,  H02J7/02 ,  H02J7/34

CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J7/345 ,  H02J50/05

Abstract: In a power transmitting device (101) and a power receiving device (201), active electrodes (13, 23), passive electrodes (14, 24), and reference potential electrodes (15, 25) oppose each other so as to make capacitance coupling, so that capacitances Caa, Cpp, and Cgg are generated. Capacitors having capacitances C1a, C1p, C2a, and C2p are connected to between the reference potential electrode (15) and the active electrode (13), between the reference potential electrode (15) and the passive electrode (14), between the reference potential electrode (25) and the active electrode (23), and between the reference potential electrode (25) and the passive electrode (24), respectively. The power transmission system (1) satisfies any one or more of the conditions of Caa+Cpp

公开(公告)号：US09960638B2

公开(公告)日：2018-05-01

申请号：US14887551

申请日：2015-10-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Keiichi Ichikawa

IPC: H02J50/05 ,  H02J7/02 ,  H02J50/40 ,  H02J5/00 ,  H02J50/12

CPC classification number: H02J50/05 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H02J50/40

Abstract: A wireless power transmission system includes a power transmission device, which applies an alternating-current voltage to active and passive electrodes, and a power reception device, which supplies to a load a voltage induced in active and passive electrodes facing the active and passive electrodes of the power transmission device. The power transmission device includes a planar coil connected to the active and passive electrodes and the power reception device includes a planar coil connected to the active and passive electrodes. Magnetic flux generated by the planar coils link with each other causing the planar coils to be magnetic-field coupled with each other. Thus, a wireless power transmission system capable of efficiently transmitting power is provided.

公开(公告)号：US09831917B2

公开(公告)日：2017-11-28

申请号：US14465144

申请日：2014-08-21

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Keiichi Ichikawa ,  Hironobu Takahashi

IPC: H04B5/00 ,  H02H9/04 ,  H02J17/00 ,  H02H9/00 ,  H02J7/02 ,  H02J7/00

CPC classification number: H04B5/0012 ,  H02H9/001 ,  H02H9/04 ,  H02J7/0042 ,  H02J7/025 ,  H02J17/00 ,  H02J50/05

Abstract: An electric power receiving apparatus of an electric power transmitting system includes an overvoltage suppressing unit connected in parallel to a resonant circuit. The overvoltage suppressing unit is formed by an impedance element. Impedance of the impedance element is set to such a value that a rise in a voltage across at least one pair of electric power receiving electrodes is suppressed as compared to a case in which the impedance element is not connected, in the process in which coupling capacitance Cm between electric power transmitting electrodes and the electric power receiving electrodes changes from a value held while the electric power transmitting electrodes and the electric power receiving electrodes are in a predetermined positional relationship during normal electric power transmission to substantially zero.

公开(公告)号：US20150270720A1

公开(公告)日：2015-09-24

申请号：US14700673

申请日：2015-04-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hironobu Takahashi ,  Keiichi Ichikawa ,  Tsuyoshi Suesada

IPC: H02J5/00

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

Abstract: When power transmitting electrodes of a power transmitting apparatus are respectively facing power receiving electrodes of a power receiving apparatus, a composite resonant circuit including a series resonant circuit and a parallel resonant circuit is formed through a compound capacitance formed between the power transmitting electrodes and the power receiving electrodes. In a predetermined mutually facing state in which the compound capacitance becomes maximum, the impedances of the configuration components of the composite resonant circuit are set such that a resonant frequency at which the impedance of the composite resonant circuit from a signal generator side when inputs of a load circuit is short-circuited becomes locally minimum, becomes higher than a resonant frequency at which the impedance of the composite resonant circuit as seen from the signal generator side when the inputs of the load circuit are open becomes locally maximum.

Abstract translation: 当功率发送装置的发送电极分别面对受电装置的受电极时，通过形成在电力传输电极和电力之间的复合电容形成包括串联谐振电路和并联谐振电路的复合谐振电路 接收电极。 在复合电容变得最大的预定的相互面对状态下，复合谐振电路的配置部件的阻抗被设定为使得当信号发生器侧的输入时复合谐振电路的阻抗从信号发生器侧的共振频率 负载电路短路变得局部最小，变得高于当负载电路的输入打开时从信号发生器侧看到的复合谐振电路的阻抗变得局部最大的谐振频率。

公开(公告)号：US20140175907A1

公开(公告)日：2014-06-26

申请号：US14189357

申请日：2014-02-25

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Hironobu Takahashi ,  Keiichi Ichikawa ,  Tsutomu Ieki

IPC: H02J17/00

CPC classification number: H02J50/05 ,  H02J7/025 ,  H02J17/00 ,  H02J50/70

Abstract: A power transmitting apparatus includes an active electrode, a passive electrode, a voltage generating circuit that applies a voltage between the active electrode and the passive electrode, and a reference potential electrode connected to a reference potential. A power receiving apparatus includes an active electrode, a passive electrode, a secondary battery connected between the active electrode and the passive electrode, and a reference potential electrode connected to a reference potential. Power is transmitted from the power transmitting apparatus to the power receiving apparatus as a result of the respective electrodes facing each other and being capacitively coupled to each other when the power receiving apparatus is mounted to the power transmitting apparatus.

Abstract translation: 电力传输装置包括有源电极，无源电极，在有源电极和被动电极之间施加电压的电压产生电路和连接到参考电位的参考电位电极。 电力接收装置包括有源电极，无源电极，连接在有源电极和被动电极之间的二次电池以及连接到参考电位的参考电位电极。 由于各个电极彼此面对，并且当电力接收装置安装到电力传输装置时，电力从电力传输装置传送到电力接收装置并且彼此电容耦合。

公开(公告)号：US20130187479A1

公开(公告)日：2013-07-25

申请号：US13789774

申请日：2013-03-08

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Takanori Tsuchiya ,  Keiichi Ichikawa

IPC: H04B5/00

CPC classification number: H04B5/0037 ,  H02J7/025 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H04B5/0012

Abstract: An electric power transmission system that includes a power receiving device having a first coupling electrode and a power transmission device having a second coupling electrode, both the devices being coupled via an electrostatic field, and the power transmission device configured to transmit electric power to the power receiving device in a noncontact state. The power transmission device includes a third coupling electrode that is disposed at a distance from the second coupling electrode. The third coupling electrode has a potential higher than that of the second passive electrode and lower than that of the second active electrode.

Abstract translation: 一种电力传输系统，包括具有第一耦合电极的功率接收装置和具有第二耦合电极的功率传输装置，所述两个装置经由静电场耦合，所述电力传输装置被配置为向电力发送电力 接收设备处于非接触状态。 动力传递装置包括与第二联接电极一定距离设置的第三连接电极。 第三耦合电极具有比第二无源电极高的电位，并且低于第二有源电极的电位。

公开(公告)号：US10158293B2

公开(公告)日：2018-12-18

申请号：US15487456

申请日：2017-04-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi Noma ,  Keiichi Ichikawa

IPC: H02M3/335 ,  H01F27/24 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F38/42 ,  H01F27/40 ,  H02M3/155

Abstract: A power supply module includes a substrate, a switching control IC and a coil. The coil includes a plurality of metal posts, first ends of which are mounted on a first surface of the substrate, wiring conductors that are in conductive contact with the first ends of the metal posts, and post connection conductors that are in conductive contact with second ends of the metal posts. The power supply module further includes a magnetic core that strengthens magnetic flux generated by the coil, and a sealing resin that seals the metal posts and the magnetic core.

公开(公告)号：US10069335B2

公开(公告)日：2018-09-04

申请号：US15252652

申请日：2016-08-31

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Keiichi Ichikawa ,  Tsuyoshi Suesada ,  Henri Bondar

IPC: H04B5/00 ,  H02J50/05 ,  H02J50/70 ,  H02J7/02 ,  H02J50/12 ,  H02M7/06 ,  H02M7/537 ,  H02M7/5383 ,  H02J50/10

Abstract: A power transfer system that transfers electric power from a power transmission device to a power reception device through electrical coupling. The power transmission device and the power reception device structurally designed such that the power transfer system is able to stabilize reference potentials of the power transmission device and the power reception device when the power reception device is placed on the power transmission device.