公开(公告)号：US20160261146A1

公开(公告)日：2016-09-08

申请号：US15049738

申请日：2016-02-22

Applicant: TDK CORPORATION

Inventor： Tsunehiro SAEN ,  Tetsuya NISHIYAMA ,  Mitsunari SUZUKI

IPC: H02J50/12 ,  H01F38/14

CPC classification number: H02J50/12 ,  H01F27/36 ,  H01F38/14

Abstract: A coil unit, a wireless power feeding device, a wireless power receiving device, and a wireless power transmission device are provided that can reduce high induced voltage on the metal part. A coil unit includes a power transmission coil, reactance circuits and that each form a resonant circuit together with the power transmission coil, and a metal part disposed on the same side as the back side of the power transmission coil. A ratio between a first reactance value of the first reactance circuit and a second reactance value of the second reactance circuit is set based on the ratio of the mean distance between the winding and the metal part in a part of the winding from the other end to the central portion to the mean distance between the winding and the metal part in a part of the winding from one end to the central portion.

Abstract translation: 提供一种线圈单元，无线供电装置，无线电力接收装置和无线电力传输装置，其可以降低金属部件上的高感应电压。 线圈单元包括电力传输线圈，电抗电路，并且与输电线圈一起形成谐振电路，以及设置在与输电线圈的背面相同侧的金属部件。 第一电抗电路的第一电抗值与第二电抗电路的第二电抗值之比基于绕组的一部分与另一端的绕组与金属零件之间的平均距离的比率而设定， 绕组的一端与中心部分之间的绕组与金属部分之间的平均距离的中心部分。

公开(公告)号：US20170063163A1

公开(公告)日：2017-03-02

申请号：US15254331

申请日：2016-09-01

Applicant: TDK CORPORATION

Inventor： Narutoshi FUKUZAWA ,  Ayako SATO ,  Tsunehiro SAEN

IPC: H02J50/12 ,  H02J50/90 ,  H02J50/70

CPC classification number: H02J50/12 ,  H02J50/70 ,  H02J50/90

Abstract: A coil device and a wireless power transmission device which can detect the happened open fault or short fault reliably in any one of the plurality of capacitor elements constituting the capacitor circuit. Coil device includes coil for power transmission, capacitor circuit connected to coil for power transmission and having a plurality of capacitor elements, conductive metal portion which is disposed close to coil for power transmission, and measuring portion for measuring a voltage or a current generated in metal portion.

Abstract translation: 一种线圈装置和无线电力传输装置，其可以在构成电容器电路的多个电容器元件中的任一个中可靠地检测发生的开路故障或短路故障。 线圈装置包括用于动力传递的线圈，电容器电路连接到用于电力传输的线圈，并且具有多个电容器元件，靠近线圈设置用于电力传输的导电金属部分，以及用于测量金属中产生的电压或电流的测量部分 一部分。

公开(公告)号：US20160254706A1

公开(公告)日：2016-09-01

申请号：US15049245

申请日：2016-02-22

Applicant: TDK CORPORATION

Inventor： Tsunehiro SAEN ,  Tetsuya NISHIYAMA ,  Mitsunari SUZUKI

IPC: H02J50/12 ,  B60L11/18 ,  H02J7/02

CPC classification number: H02J50/12 ,  B60L11/182 ,  H01F38/14 ,  H02J7/025 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/122 ,  Y02T90/14

Abstract: A coil unit, a wireless power feeding device, a wireless power receiving device, and a wireless power transmission device are provided that are capable of reducing high voltage induced on the metal part. A coil unit Lu1 includes a power transmission coil L1, a first reactance circuit X10 that is connected to one end portion of the winding of the power transmission coil L1 and forms a resonant circuit together with the power transmission coil L1, a metal part SD disposed on the same side as the back side of the power transmission coil L1, and a first adjustment capacitor C10 connected between the other end portion of the winding of the power transmission coil L1 and the metal part SD.

Abstract translation: 提供一种线圈单元，无线供电装置，无线电力接收装置和无线电力传输装置，其能够减少在金属部件上产生的高电压。 线圈单元Lu1包括电力传输线圈L1，连接到电力传输线圈L1的绕组的一个端部并与电力传输线圈L1一起形成谐振电路的第一电抗电路X10，设置的金属部分SD 与电力传输线圈L1的背面相同的一侧，以及连接在电力传输线圈L1的绕组的另一端部与金属部分SD之间的第一调整电容器C10。

公开(公告)号：US20150001956A1

公开(公告)日：2015-01-01

申请号：US14315671

申请日：2014-06-26

Applicant: TDK Corporation

Inventor： Tsunehiro SAEN ,  Masahide OHNISHI ,  Ryo MIYAZAWA

IPC: H04B5/00

CPC classification number: H04B5/0037 ,  H02J1/04 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H02J2001/002 ,  H04B5/0075

Abstract: To provide a wireless power receiving device, and a wireless power transmission device capable of improving the reliability of a protection circuit while preventing breakage of a circuit element upon occurrence of any abnormality, such as overvoltage or overcurrent. A wireless power receiving device includes a power receiving coil; a rectifier unit that performs full-wave rectification of the power received by the power receiving coil and supplies the power to a load; power-receiving-side detecting unit that detects an output voltage value or an output current value from the rectifier unit; and switching unit that short-circuits one of two current paths through the rectifier unit if the value detected by the power-receiving-side detecting unit exceeds a predetermined reference value.

Abstract translation: 提供一种无线电力接收装置和能够提高保护电路的可靠性的无线电力传输装置，同时防止在出现诸如过电压或过电流的任何异常时电路元件断裂。 无线电力接收装置包括：受电线圈; 整流单元，其对由所述受电线圈接收的功率进行全波整流，并向所述负载供电; 电力接收侧检测单元，其从所述整流器单元检测输出电压值或输出电流值; 以及如果由电力接收侧检测单元检测到的值超过预定的参考值，则将通过整流单元的两个电流路径中的一个短路的开关单元。