WO2015173890A1 - 無線電力伝送による可動部伝送システム - Google Patents
無線電力伝送による可動部伝送システム Download PDFInfo
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- WO2015173890A1 WO2015173890A1 PCT/JP2014/062720 JP2014062720W WO2015173890A1 WO 2015173890 A1 WO2015173890 A1 WO 2015173890A1 JP 2014062720 W JP2014062720 W JP 2014062720W WO 2015173890 A1 WO2015173890 A1 WO 2015173890A1
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- transmission
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/08—Slip-rings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
Definitions
- the present invention relates to a movable part transmission system by wireless power transmission that can realize a power transmission function by a slip ring device that requires a mechanical contact without contact.
- a slip ring device having a mechanical contact
- This slip ring device includes an annular slip ring that is connected to a transmission power source and disposed on an outer peripheral surface of a rotating body via an insulator, a brush that is connected to a reception power source and that is in sliding contact with the outer peripheral surface of the slip ring. It is composed of A load device or the like is connected to the reception power source. With this configuration, the slip ring and the brush are electrically connected, and the power from the transmission power source can be transmitted to the reception power source. Furthermore, in this slip ring device, it is possible to multiplex and transmit a plurality of systems of power by multiplexing pairs of slip rings and brushes.
- a transmission system based on contactless wireless power transmission is known as an alternative technology (see, for example, Patent Document 1).
- the transmitting antenna side is configured to transmit the magnetic flux generated by the transmitting coil 101 and the transmitting coil 101 arranged around the axis of the rotating body.
- a transmission side spacer 102 having a predetermined magnetic permeability is provided so as to be controlled so as to be centered on the axis of the transmission side coil 101 as a pair.
- the receiving antenna side is centered on the axis of the receiving side coil 103 and the receiving side coil 103 arranged around the axis of the rotating body and the receiving side coil 103 so as to control the magnetic flux by the receiving side coil 103.
- a receiving-side spacer 104 having a predetermined magnetic permeability.
- FIG. 3 a case where two systems of transmission / reception antennas are provided is shown, and suffixes a and b are added to the reference numerals of the functional units.
- Reference numeral 105 denotes a connection hollow spacer for connecting each system. With this configuration, the power transmission function by the slip ring device can be realized without contact.
- a transmission / reception antenna is configured using spacers 102 and 104 having a predetermined permeability for controlling magnetic flux. Therefore, there exists a subject that the coil shape of a transmission / reception antenna will be restrict
- This invention was made in order to solve the above-described problems, enables a non-contact power transmission function by the slip ring device, and achieves low power loss (high efficiency). And it aims at providing the movable part transmission system by wireless power transmission which can implement
- a movable part transmission system by wireless power transmission is a movable part transmission system by wireless power transmission via a rotating body, and wirelessly transmits a primary transmission power supply for supplying power and power from the primary transmission power supply.
- Transmission / reception unit composed of a transmission antenna and a reception antenna that receives power from a pair of transmission antennas, a transmission power supply circuit that establishes a resonance condition for the pair of transmission antennas, and a resonance condition for the pair of reception antennas
- the transmission antenna is composed of a spiral transmission side coil arranged around the axis of the rotating body, and the reception antenna is formed of a transmission side coil around the axis of the rotating body. It is composed of a spiral receiving coil disposed with a gap between them.
- the power transmission function by the slip ring device can be realized in a non-contact manner, and further, low power loss (high efficiency) can be achieved.
- low power loss high efficiency
- downsizing, weight reduction, and cost reduction can be realized.
- Embodiment 1 of this invention It is a schematic diagram which shows the structure of the movable part transmission system by the wireless power transmission which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the structure of the transmission / reception part in Embodiment 1 of this invention, (a) It is a perspective view of a transmission / reception part, (b) It is a front view of a transmission antenna and a reception antenna. It is a schematic diagram which shows the structure of the transmission / reception part of the movable part transmission system by the conventional wireless power transmission.
- FIG. 1 is a schematic diagram showing a configuration of a movable part transmission system by wireless power transmission according to Embodiment 1 of the present invention.
- the movable part transmission system by wireless power transmission is used when a power line is connected to a load device or the like (not shown) via a mechanical rotating body (not shown), and includes power including an electric signal.
- FIG. 1 shows a case where wireless power transmission functions are multiplexed into a plurality of systems and a plurality of systems of power including electric signals are wirelessly transmitted in parallel.
- the movable part transmission system using wireless power transmission includes a primary transmission power source 1, a transmission power source circuit 2, a transmission / reception unit 3, and a reception power source circuit 4.
- the transmission / reception unit 3 includes a transmission antenna 5 and a reception antenna 6.
- the movable part transmission system shown in FIG. 1 has a plurality of transmission power supply circuits 2, a transmission antenna 5, a reception antenna 6, and a reception power supply circuit 4 in order to perform multiplexed transmission (in the example of FIG. 1). The case where three systems are provided is shown, and suffixes a to c are added to the codes of the respective functional units).
- the primary transmission power supply 1 supplies power to each transmission antenna 5 via each transmission power supply circuit 2.
- the transmission power supply circuit 2 is disposed between the primary transmission power supply 1 and the transmission antenna 5, and establishes a resonance condition for the paired transmission antenna 5 by resonance impedance control.
- the transmission antenna 5 wirelessly transmits the power supplied from the primary transmission power supply 1 via the paired transmission power supply circuit 2 to the reception antenna 6. Details of the configuration of the transmission antenna 5 will be described later.
- the receiving antenna 6 receives power from the transmitting antenna 5 that forms a pair. The power received by the receiving antenna 6 is supplied to a load device or the like via the receiving power supply circuit 4. Details of the configuration of the receiving antenna 6 will be described later.
- the reception power supply circuit 4 is disposed between the reception antenna 6 and a load device and the like, and establishes a resonance condition of the paired reception antenna 6 by input impedance control.
- the wireless power transmission method of the transmission / reception unit 3 is not particularly limited, and any of a magnetic field resonance method, an electric field resonance method, and an electromagnetic induction method may be used.
- FIG. 2 is a schematic diagram showing a configuration of the transmission / reception unit 3 according to Embodiment 1 of the present invention, (a) a perspective view of the transmission / reception unit 3, and (b) a front view of the transmission antenna 5 and the reception antenna 6. .
- the transmission antenna 5 is arranged outside the reception antenna 6, but the arrangement of the transmission antenna 5 and the reception antenna 6 may be reversed.
- a pair of transmission antenna 5 and reception antenna 6 are arranged with a gap.
- the transmission antenna 5 and the reception antenna 6 of each system are arranged at a distance along the axial direction of the rotating body (the Y direction shown in FIG. 2A).
- Yes. 2A shows a case where the transmission / reception unit 3 has three systems, and suffixes a to c are added to the codes of the functional units.
- the transmission antenna 5 is composed of a spiral transmission-side coil 7 arranged with the axis of the rotating body as the center (including the meaning of substantially the center).
- the transmission side coil 7 is fixed on an insulating material (for example, acrylic, glass epoxy, CFRP (carbon fiber reinforced plastic), kapton, resin, etc.).
- the receiving antenna 6 is composed of a spiral receiving side coil 8 that is arranged with a gap between it and the transmitting side coil 7 about the axis of the rotating body (including the meaning of the center). ing.
- the reception side coil 8 is disposed inside the transmission side coil 7.
- the surfaces of the transmitting antenna 5 and the receiving antenna 6 are arranged with the same surface or offset (in the example of FIG. 2, the case where they are arranged on the same surface is shown).
- the coil shape of the transmitting antenna 5 and the receiving antenna 6 is circular. However, it is not limited to this shape, and may be any shape such as an ellipse or a square.
- the power transmission efficiency characteristic changes depending on the distance G between the systems. That is, the greater the distance G, the better the power transmission efficiency characteristics.
- the distance G between the systems is set so that the mutual interference between the systems is reduced in consideration of the phase of the magnetic field generated from each transmission antenna 5.
- the distance G is designed to be greater than or equal to the maximum outer diameter D of the transmission antenna 5 and the reception antenna 6 that are paired, or the distance G is designed to be greater than or equal to the minimum inner diameter B of the transmission antenna 5 and the reception antenna 6 that are paired.
- the transmission antenna 5 composed of the spiral transmission-side coil 7 arranged around the axis of the rotating body and the transmission centered around the axis of the rotating body. Since it is configured to include a receiving antenna 6 including a spiral receiving coil 8 disposed with a gap between the coil 7 and the side coil 7, the power transmission function by the slip ring device can be realized without contact. It can be. As a result, there is no life limit due to wear deterioration of the mechanical contacts, and the life of the apparatus can be extended. In addition, because of wireless power transmission, it is possible to prevent contact failure due to contamination and leakage due to condensation, and the reliability of the apparatus is improved.
- the spacers 102 and 104 having a predetermined magnetic permeability for controlling the magnetic flux are not used as in the prior art, there are no manufacturing restrictions on the coil shapes of the transmission antenna 5 and the reception antenna 6. Furthermore, there is no power loss due to eddy currents in the spacers 102 and 104, and there is no increase in mass, volume and cost in the spacers 102 and 104. Therefore, it is possible to achieve lower power loss (higher efficiency) than in the conventional configuration, and to achieve downsizing, weight reduction, and cost reduction.
- each system is arranged at a distance G so that mutual interference between the systems is reduced in consideration of the phase of the magnetic field generated from each transmission antenna 5, so that high efficiency is achieved. Multiplexed transmission by wireless power transmission is possible.
- the transmission antenna 5 and the reception antenna 6 are each composed of a single coil 7 and 8.
- each of the coils 7 and 8 may be composed of, for example, a power feeding coil and a resonance coil, or may be composed of two or more coils.
- the power supplied to the transmission antenna 5 by the primary transmission power supply 1 and the transmission power supply circuit 2 may be the same frequency in each system or may be a different frequency.
- strain will also change.
- the reception power supply circuit 4 may be added with a function of making the resonance condition established for the reception antenna 6 variable according to such a change in the transmission state.
- a function for changing the resonance condition of the transmission antenna 5 in the transmission power supply circuit 2 may be added.
- a function of making the resonance conditions of the antennas 5 and 6 variable in both the circuits 2 and 4 may be added.
- the wireless power transmission function is multiplexed in a plurality of systems and the power of the plurality of systems including the electric signal is wirelessly transmitted in parallel is shown.
- the present invention is not limited to this, and the wireless power transmission function may be configured as one system so that power including an electric signal is wirelessly transmitted.
- the present invention can be modified with any component of the embodiment or omitted with any component of the embodiment.
- the movable part transmission system by wireless power transmission can realize the power transmission function by the slip ring device in a contactless manner, can achieve low power loss (high efficiency), and can be downsized. Light weight and low cost can be realized, and the power transmission function by the slip ring device that requires mechanical contact can be used in a movable part transmission system by wireless power transmission that can be realized without contact. Is suitable.
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
Description
このスリップリング装置は、送信電源が接続され、回転体の外周面に絶縁体を介して配置された環状のスリップリングと、受信電源が接続され、スリップリングの外周面と摺動接触するブラシとから構成されている。なお、受信電源には負荷機器等が接続されている。この構成により、スリップリングとブラシが電気的に接続され、送信電源からの電力を受信電源へ伝送することができる。更に、このスリップリング装置において、スリップリング及びブラシの対を多重化することで、複数系統の電力を多重化伝送することが可能となる。
実施の形態1.
図1はこの発明の実施の形態1に係る無線電力伝送による可動部伝送システムの構成を示す模式図である。
無線電力伝送による可動部伝送システムは、機構的な回転体(不図示)を経由して電源ラインを負荷機器等(不図示)へ接続する場合等に用いられるものであり、電気信号を含む電力を無線伝送する装置である。なお図1では、無線電力伝送機能を複数系統に多重化して、電気信号を含む複数系統の電力を並列に無線伝送する場合を示している。
送信電源回路2は、一次送信電源1と送信アンテナ5との間に配置され、共鳴インピーダンス制御により、対となる送信アンテナ5の共振条件を成立させるものである。
受信アンテナ6は、対となる送信アンテナ5からの電力を受信するものである。この受信アンテナ6により受信された電力は受信電源回路4を介して負荷機器等に供給される。この受信アンテナ6の構成の詳細については後述する。
なお、送受信部3の無線電力伝送方式は特に限定されるものではなく、磁界共鳴による方式、電界共鳴による方式、電磁誘導による方式のいずれであってもよい。
ここで、各系統間の距離Gの設定は、各送信アンテナ5から発生する磁界の位相を考慮して、各系統間の相互干渉が少なくなるように設定する。例えば図2において、距離Gを対となる送信アンテナ5及び受信アンテナ6の最大外径D以上に設計する、又は、距離Gを対となる送信アンテナ5及び受信アンテナ6の最小内径B以上に設計する。
また、従来技術のように磁束をコントロールするための所定の透磁率のスペーサ102,104を使用しないため、送信アンテナ5と受信アンテナ6のコイル形状に製造上の制限がない。更に、スペーサ102,104での渦電流による電力損失の発生もなく、また、スペーサ102,104における質量、体積及びコストの増加もない。よって、従来構成よりも低電力損失化(高効率化)を図ることができ、且つ、小型化、軽量化及び低コスト化を実現することができる。
Claims (11)
- 回転体を経由した無線電力伝送による可動部伝送システムであって、
電力を供給する一次送信電源と、
前記一次送信電源からの電力を無線伝送する送信アンテナ、及び、対となる前記送信アンテナからの電力を受信する受信アンテナからなる送受信部と、
対となる前記送信アンテナの共振条件を成立させる送信電源回路と、
対となる前記受信アンテナの共振条件を成立させる受信電源回路とを備え、
前記送信アンテナは、前記回転体の軸心を中心にして配置されたスパイラル状の送信側コイルから成り、
前記受信アンテナは、前記回転体の軸心を中心にして前記送信側コイルとの間に空隙を有して配置されたスパイラル状の受信側コイルから成る
ことを特徴とする無線電力伝送による可動部伝送システム。 - 前記送信アンテナ及び前記受信アンテナは複数系統設けられ、各系統は前記回転体の軸心方向に沿って距離を置いて配置された
ことを特徴とする請求項1記載の無線電力伝送による可動部伝送システム。 - 前記距離は、対となる前記送信アンテナ及び前記受信アンテナの最大外径以上である
ことを特徴とする請求項2記載の無線電力伝送による可動部伝送システム。 - 前記距離は、対となる前記送信アンテナ及び前記受信アンテナの最小内径以上である
ことを特徴とする請求項2記載の無線電力伝送による可動部伝送システム。 - 前記送受信部は、磁界共鳴により無線伝送を行う
ことを特徴とする請求項1記載の無線電力伝送による可動部伝送システム。 - 前記送受信部は、電界共鳴により無線伝送を行う
ことを特徴とする請求項1記載の無線電力伝送による可動部伝送システム。 - 前記送受信部は、電磁誘導により無線伝送を行う
ことを特徴とする請求項1記載の無線電力伝送による可動部伝送システム。 - 前記送信側コイル及び前記受信側コイルは、各々2個以上のコイルから構成された
ことを特徴とする請求項1記載の無線電力伝送による可動部伝送システム。 - 前記一次送信電源は、前記各送信アンテナに対して異なる周波数の電力を供給する
ことを特徴とする請求項2記載の無線電力伝送による可動部伝送システム。 - 前記受信電源回路は、前記受信アンテナの伝送状況に応じて前記受信アンテナの共振条件を可変する
ことを特徴とする請求項1記載の無線電力伝送による可動部伝送システム。 - 前記送信電源回路は、前記送信アンテナの伝送状況に応じて前記送信アンテナの共振条件を可変する
ことを特徴とする請求項1記載の無線電力伝送による可動部伝送システム。
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KR1020167034713A KR20170003678A (ko) | 2014-05-13 | 2014-05-13 | 무선 전력 전송에 의한 가동부 전송 시스템 |
JP2016519019A JP6494606B2 (ja) | 2014-05-13 | 2014-05-13 | 無線電力伝送による可動部伝送システム |
PCT/JP2014/062720 WO2015173890A1 (ja) | 2014-05-13 | 2014-05-13 | 無線電力伝送による可動部伝送システム |
EP14891904.6A EP3145048B1 (en) | 2014-05-13 | 2014-05-13 | Movable portion transmission system using wireless power transmission |
US15/303,949 US10432027B2 (en) | 2014-05-13 | 2014-05-13 | Movable portion transmission system using wireless power transmission |
JP2017201079A JP6524175B2 (ja) | 2014-05-13 | 2017-10-17 | 電力伝送機構 |
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US10689129B1 (en) * | 2012-12-21 | 2020-06-23 | Jody Nehmeh | Integrated electrical power and utilities management system |
WO2016190649A1 (ko) * | 2015-05-26 | 2016-12-01 | 주식회사 아모센스 | 무선전력 수신모듈 |
US10804747B1 (en) * | 2017-04-04 | 2020-10-13 | Lockheed Martin Corporation | Wireless power transfer for a rotating turret system |
CN107240964A (zh) * | 2017-05-04 | 2017-10-10 | 上海德门电子科技有限公司 | 无线快充发射系统、无线快充接收系统及无线快充方法 |
CN108879990A (zh) * | 2017-05-12 | 2018-11-23 | 中惠创智无线供电技术有限公司 | 一种供电电路 |
CN113937904B (zh) * | 2021-10-29 | 2022-10-11 | 中国石油天然气集团有限公司 | 一种基于井下旋转导向的多路无线电能传输耦合机构 |
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- 2014-05-13 KR KR1020167034713A patent/KR20170003678A/ko not_active Application Discontinuation
- 2014-05-13 EP EP14891904.6A patent/EP3145048B1/en active Active
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Also Published As
Publication number | Publication date |
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JP2018007566A (ja) | 2018-01-11 |
EP3145048B1 (en) | 2018-08-15 |
JPWO2015173890A1 (ja) | 2017-04-20 |
KR20170003678A (ko) | 2017-01-09 |
US20170047787A1 (en) | 2017-02-16 |
EP3145048A4 (en) | 2017-12-13 |
JP6494606B2 (ja) | 2019-04-03 |
JP6524175B2 (ja) | 2019-06-05 |
US10432027B2 (en) | 2019-10-01 |
EP3145048A1 (en) | 2017-03-22 |
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