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公开(公告)号：US09716390B2
公开(公告)日：2017-07-25
申请号：US14548950
申请日：2014-11-20
申请人： TDK CORPORATION
发明人： Noritaka Chiyo , Tetsuya Nishiyama
CPC分类号： H02J5/005 , H01F3/10 , H01F27/24 , H01F27/38 , H01F38/14 , H02J7/025 , H02J50/10 , H02J50/70
摘要： A power feeding coil unit includes a power feeding coil, and first and second auxiliary coils arranged so that a wire of the first auxiliary coil and a wire of the second auxiliary coil do not overlap a wire of the a power feeding coil when viewed from a direction perpendicular to an axial direction of the power feeding coil. A direction of circulation of a magnetic flux generated by the first auxiliary coil and a magnetic flux generated by the second auxiliary coil are opposite to a direction of circulation of a magnetic flux generated by the power feeding coil. An axes of the first and second auxiliary coils are substantially perpendicular to a power feeding direction of the power feeding coil, and are not aligned with the axis of the power feeding coil.
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公开(公告)号：US10002708B2
公开(公告)日：2018-06-19
申请号：US14661705
申请日：2015-03-18
申请人： TDK CORPORATION
IPC分类号： H01F27/42 , H01F38/14 , H02J50/70 , H02J50/40 , H02J50/10 , B60L11/18 , H02J5/00 , H02J7/02 , H01F27/28 , H01F27/34 , H01F27/36
CPC分类号： H01F38/14 , B60L53/12 , B60L53/30 , B60L2210/30 , B60L2210/40 , B60L2240/36 , H01F27/288 , H01F27/346 , H01F27/365 , H02J5/005 , H02J7/025 , H02J50/10 , H02J50/40 , H02J50/70 , Y02T10/7005 , Y02T10/7072 , Y02T10/7241 , Y02T90/12 , Y02T90/121 , Y02T90/122 , Y02T90/127 , Y02T90/14
摘要： A coil unit includes a non-magnetic conductive plate which is disposed in an arrangement direction of first and second coils have reverse winding direction to each other, and a magnetic body. The magnetic body includes a first portion which is positioned in an outer side than an outline of one side of the conductive plate in the arrangement direction of the first and second coils, and a second portion which is positioned in an outer side than an outline of the other side of the conductive plate in the arrangement direction of the first and second coils. When viewing from the arrangement direction of the first and second coils, the first and second portions are positioned on a side of the conductive plate where is opposite to a side which faces the first and second coils.
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公开(公告)号：US09728325B2
公开(公告)日：2017-08-08
申请号：US14549118
申请日：2014-11-20
申请人： TDK CORPORATION
CPC分类号： H01F27/346 , B60L11/182 , H01F5/00 , H01F27/24 , H01F27/28 , H01F27/2871 , H01F27/38 , H01F38/14 , H02J7/025 , H02J50/10 , H02J50/70 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
摘要： A power feeding coil unit includes a power feeding coil, and first and second auxiliary coils located outside of the region defined by a wire of the power feeding coil. The axis of the first auxiliary coil and the axis of the second auxiliary coil are substantially perpendicular to the axis of the power feeding coil. The power feeding coil and the first and second auxiliary coils simultaneously generate respective magnetic fluxes, each of which interlinks the corresponding one of the power feeding coil and the first and second auxiliary coils in a direction from the center to the outside of the power feeding coil unit.
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公开(公告)号：US09570921B2
公开(公告)日：2017-02-14
申请号：US14548950
申请日：2014-11-20
申请人： TDK CORPORATION
发明人： Noritaka Chiyo , Tetsuya Nishiyama
摘要： A power feeding coil unit includes a power feeding coil, and first and second auxiliary coils arranged so that a wire of the first auxiliary coil and a wire of the second auxiliary coil do not overlap a wire of the a power feeding coil when viewed from a direction perpendicular to an axial direction of the power feeding coil. A direction of circulation of a magnetic flux generated by the first auxiliary coil and a magnetic flux generated by the second auxiliary coil are opposite to a direction of circulation of a magnetic flux generated by the power feeding coil. An axes of the first and second auxiliary coils are substantially perpendicular to a power feeding direction of the power feeding coil, and are not aligned with the axis of the power feeding coil.
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公开(公告)号：US09570229B2
公开(公告)日：2017-02-14
申请号：US14549118
申请日：2014-11-20
申请人： TDK CORPORATION
摘要： A power feeding coil unit includes a power feeding coil, and first and second auxiliary coils located outside of the region defined by a wire of the power feeding coil. The axis of the first auxiliary coil and the axis of the second auxiliary coil are substantially perpendicular to the axis of the power feeding coil. The power feeding coil and the first and second auxiliary coils simultaneously generate respective magnetic fluxes, each of which interlinks the corresponding one of the power feeding coil and the first and second auxiliary coils in a direction from the center to the outside of the power feeding coil unit.
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公开(公告)号：US09935500B2
公开(公告)日：2018-04-03
申请号：US15049738
申请日：2016-02-22
申请人： TDK CORPORATION
摘要： 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.
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公开(公告)号：US09558882B2
公开(公告)日：2017-01-31
申请号：US14548420
申请日：2014-11-20
申请人： TDK CORPORATION
IPC分类号： 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分类号： 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
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US10014105B2
公开(公告)日：2018-07-03
申请号：US14661675
申请日：2015-03-18
申请人： TDK CORPORATION
IPC分类号： H01F27/42 , H01F38/14 , H02J50/10 , H02J50/40 , H02J50/70 , H02J5/00 , H02J17/00 , H02J7/00 , H01F27/36
CPC分类号： H01F38/14 , H01F27/367 , H02J5/005 , H02J7/0042 , H02J17/00 , H02J50/10 , H02J50/40 , H02J50/70
摘要： A coil unit includes a non-magnetic conductive plate which is disposed along an axis of a coil, and a magnetic body. The magnetic body includes a first portion which is positioned in an outer side than an outline of one side of the conductive plate in the axis direction of the coil, and a second portion which is positioned in an outer side than an outline of the other side of the conductive plate in the axis direction of the coil. When viewing from the axis direction of the coil, the first and second portions are positioned on a side of the conductive plate where is opposite to a side which faces the coil.
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公开(公告)号：US09991749B2
公开(公告)日：2018-06-05
申请号：US15049245
申请日：2016-02-22
申请人： TDK CORPORATION
CPC分类号： H02J50/12 , B60L11/182 , H01F38/14 , H02J7/025 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
摘要： 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.
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