公开(公告)号：US20250004349A1

公开(公告)日：2025-01-02

申请号：US18754296

申请日：2024-06-26

Applicant: TDK CORPORATION

Inventor： Yasuhiro TAKAGI ,  Makoto Fukuda ,  Takeshi Kamono

IPC: G02F1/225 ,  G02F1/21

Abstract: An optical coupler of the present disclosure includes a plurality of one-input multiple-output multimode interference input parts provided for each laser beam of the plurality of laser light beams. The optical coupler further includes one light output port configured to allow three laser light beams to be coupled and emitted therethrough, a plurality of light input side optical waveguides configured to extend from each of the plurality of one-input multiple-output multimode interference input parts, a light output side optical waveguide configured to extend from the light output port, and an optical coupling part configured to have the plurality of light input side optical waveguides and the light output side optical waveguide connected thereto.

公开(公告)号：US09515493B2

公开(公告)日：2016-12-06

申请号：US14549094

申请日：2014-11-20

Applicant: TDK CORPORATION

Inventor： Noritaka Chiyo ,  Takeshi Kamono ,  Mitsunari Suzuki

IPC: H01F27/24 ,  H02J5/00 ,  H01F38/14 ,  H01F38/00 ,  H01F27/42 ,  H01F27/30 ,  H01F37/00 ,  H01F27/38 ,  H01F3/10

CPC classification number: H02J50/10 ,  H01F3/10 ,  H01F27/24 ,  H01F27/30 ,  H01F27/38 ,  H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H01F38/14 ,  H02J7/025 ,  H02J50/70

Abstract: A power feeding coil unit includes a first power feeding coil and a second power feeding coil that generate a first magnetic flux, a first auxiliary coil that generates a second magnetic flux interlinking with the first power feeding coil, and a second auxiliary coil that generates a third magnetic flux interlinking with the second power feeding coil. An axial direction of the first auxiliary coil is nonparallel to an axial direction of the first power feeding coil, and an axial direction of the second auxiliary coil is nonparallel to an axial direction of the second power feeding coil. A direction of circulation of the second and third magnetic fluxes are opposite to a direction of circulation of the first magnetic flux.

Abstract translation: 馈电线圈单元包括产生第一磁通的第一供电线圈和第二供电线圈，产生与第一供电线圈相互连接的第二磁通的第一辅助线圈和产生第一磁通的第二辅助线圈， 第三磁通量与第二馈电线圈相互连接。 第一辅助线圈的轴向方向与第一供电线圈的轴向不平行，第二辅助线圈的轴向方向与第二供电线圈的轴向不平行。 第二和第三磁通量的循环方向与第一磁通量的循环方向相反。

公开(公告)号：US09728979B2

公开(公告)日：2017-08-08

申请号：US14555188

申请日：2014-11-26

Applicant: TDK CORPORATION

Inventor： Masahide Ohnishi ,  Takeshi Kamono

IPC: H02J5/00 ,  H01F38/14

CPC classification number: H02J50/12 ,  H01F38/14 ,  H02J5/005

Abstract: The present invention provides a contactless power transmission circuit which is capable of narrowing a fluctuation extent of an output voltage output by a power receiving coil via a rectifier circuit. The contactless power transmission circuit controls a period of an alternating voltage output from a driving circuit based on a smaller one of either of a first command value and a second command value. Here, the first command value is one based on a difference between a detected value of the output voltage from the rectifier circuit and a target value. The second command value is one calculated based on a difference between a detected value of a transmission current flowing through the power transmitting coil and a target value.

公开(公告)号：US09558882B2

公开(公告)日：2017-01-31

申请号：US14548420

申请日：2014-11-20

Applicant: TDK CORPORATION

Inventor： Noritaka Chiyo ,  Takeshi Kamono ,  Narutoshi Fukuzawa ,  Toshinori Matsuura ,  Tetsuya Nishiyama

IPC: H01F5/00 ,  H01F27/34 ,  H01F27/28 ,  H01F38/14 ,  H02J5/00 ,  H01F27/24 ,  H01F27/42 ,  H01F38/00 ,  H01F37/00 ,  B60L11/00 ,  H01F27/38 ,  H02J7/02 ,  H02J7/00 ,  H02J17/00

CPC classification number: H01F27/346 ,  B60L11/00 ,  B60L11/182 ,  B60L11/1824 ,  B60L2230/10 ,  B60L2270/147 ,  H01F5/00 ,  H01F27/24 ,  H01F27/28 ,  H01F27/38 ,  H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H01F38/14 ,  H02J5/005 ,  H02J7/0042 ,  H02J7/025 ,  H02J17/00 ,  H02J50/10 ,  H02J50/40 ,  H02J50/70 ,  Y02T10/7005 ,  Y02T10/7088 ,  Y02T90/12 ,  Y02T90/121 ,  Y02T90/122 ,  Y02T90/14

Abstract: A power feeding coil unit includes a power feeding coil, and an auxiliary coil. The auxiliary coil is arranged not to interlink with a magnetic flux that interlinks with a power receiving coil that is arranged to face the power feeding coil during power feeding. An axial direction of the auxiliary coil is nonparallel to an opposing direction of the power feeding coil and the power receiving coil. A direction of circulation of a magnetic flux generated by the auxiliary coil is opposite to a direction of circulation of a magnetic flux generated by the power feeding coil.

Abstract translation: 馈电线圈单元包括馈电线圈和辅助线圈。 辅助线圈被布置为不与在供电期间被布置为面对馈电线圈的受电线圈相互连接的磁通量互连。 辅助线圈的轴向方向与供电线圈和受电线圈的相反方向不平行。 由辅助线圈产生的磁通的循环方向与由馈电线圈产生的磁通的循环方向相反。

公开(公告)号：US08817490B2

公开(公告)日：2014-08-26

申请号：US13724073

申请日：2012-12-21

Applicant: TDK Corporation

Inventor： Eiji Takegami ,  Jun Kawakami ,  Takeshi Kamono

IPC: H02M3/335 ,  H02J7/00

CPC classification number: H02M3/33584 ,  H02J7/0052 ,  H02J7/34 ,  H02J2007/0059 ,  Y02B40/90

Abstract: A DC-DC converter is configured with a voltage-source power converter at a primary side of a transformer, a current-source power converter at a secondary side of the transformer, and a controller. First and second voltage detection circuits respectively detect first and second voltages of the voltage-source and the current-source power converters. A current detection circuit detects an input-output current of the current-source power converter. The controller controls the voltage-source and the current-source power converters to transfer power between the primary side and the secondary side of the transformer. The controller includes a calculation unit that performs calculations based on the first voltage, the second voltage and the input-output current, and a table unit that include a plurality of parameter sets. The calculation unit performs the calculations based on one of the plurality of parameter sets that is selected from the table unit.

Abstract translation: DC-DC转换器配置有在变压器的初级侧的电压源功率转换器，变压器次级侧的电流源功率转换器和控制器。 第一和第二电压检测电路分别检测电压源和电流源功率转换器的第一和第二电压。 电流检测电路检测电流源功率转换器的输入 - 输出电流。 控制器控制电压源和电流源功率转换器在变压器的初级侧和次级侧之间传输功率。 控制器包括基于第一电压，第二电压和输入 - 输出电流进行计算的计算单元和包括多个参数组的表单元。 计算单元基于从表单元中选择的多个参数组中的一个执行计算。

公开(公告)号：US10728997B2

公开(公告)日：2020-07-28

申请号：US16465191

申请日：2017-11-21

Applicant: TDK CORPORATION

Inventor： Takahiro Shiohara ,  Takeshi Kamono

IPC: H05H1/24 ,  H01L31/107 ,  H02M7/48 ,  H01L41/107

Abstract: A plasma generator capable of adjusting the amount of plasma generation in a simple configuration includes a control circuit controlling a frequency of an AC power supplied to a piezoelectric transformer and a control signal generation circuit providing a control signal to the control circuit. The plasma generator is configured so that the control signal output from the control signal generation circuit is appropriately adjusted. The control circuit controls the frequency of the AC power so as to bring a target value, which is set based on the control signal provided from the control signal generation circuit.

公开(公告)号：US10305330B2

公开(公告)日：2019-05-28

申请号：US15471345

申请日：2017-03-28

Applicant: TDK CORPORATION

Inventor： Kazuyoshi Hanabusa ,  Masayuki Kobayashi ,  Takeshi Kamono

IPC: H01F27/28 ,  H01F27/34 ,  H01F38/14 ,  H02J50/12 ,  H02J50/90

Abstract: A power transmission device, which is used for a contactless power transmission to a movable body moving on a travelling surface in a power transmission direction parallel to the travelling surface, including a power transmission coil and a shielding plate, wherein, the power transmission coil is installed so that a coil surface is approximately vertical to the travelling surface, and at least a part of the shielding plate is disposed inside the region on the travelling surface sandwiched between a plane surface defined by a coil surface of the power transmission coil and a plane surface defined by a coil surface of a power receiving coil mounted on the movable body.

公开(公告)号：US09390851B2

公开(公告)日：2016-07-12

申请号：US14554702

申请日：2014-11-26

Applicant: TDK CORPORATION

Inventor： Mitsunari Suzuki ,  Takeshi Kamono ,  Yasuhiro Terasaki ,  Noritaka Chiyo

IPC: H01F27/28 ,  H01F21/02 ,  H01F27/30 ,  H01F38/14 ,  B60L11/18 ,  H01F27/32 ,  H01F27/36 ,  H02J7/02

CPC classification number: H01F38/14 ,  B60L11/182 ,  H01F27/2823 ,  H01F27/2871 ,  H01F27/306 ,  H01F27/325 ,  H01F27/362 ,  H01F27/365 ,  H01F27/367 ,  H01F41/071 ,  H01F41/074 ,  H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/122 ,  Y02T90/14

Abstract: A coil which maintains a balance of a parasitic capacitance and has a structure that can be multilayered. The coil is stacked with a structure which includes winding wire portions formed of a wire wound for several turns in a plane in each layer, wherein winding wire portions in each layer include a first winding portion formed by performing a single turn of winding in each layer in a same winding direction from a bottom layer to an uppermost layer, and a second winding portion formed by performing a single turn of winding in each layer in a same winding direction from the uppermost layer to the bottom layer, and the winding directions of the first and second winding portions are identical to each other and the first winding portion and the second winding portion are joined in the uppermost layer or the bottom layer.

Abstract translation: 线圈，其保持寄生电容的平衡并且具有可以多层的结构。 线圈层叠有包括由在各层中的平面内卷绕数匝的线形成的绕组线的结构，其中每层中的绕组线包括通过在每层中执行单圈绕组而形成的第一绕组部分 在从底层到最上层的相同的缠绕方向上，以及通过在从最上层到底层的相同缠绕方向上在每层中执行单圈缠绕而形成的第二缠绕部分，以及 第一和第二绕组部分彼此相同，并且第一绕组部分和第二绕组部分在最上层或底层中接合。