JP2019201443A - Non-contact power supply device - Google Patents
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- JP2019201443A JP2019201443A JP2018092814A JP2018092814A JP2019201443A JP 2019201443 A JP2019201443 A JP 2019201443A JP 2018092814 A JP2018092814 A JP 2018092814A JP 2018092814 A JP2018092814 A JP 2018092814A JP 2019201443 A JP2019201443 A JP 2019201443A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 71
- 230000004907 flux Effects 0.000 abstract description 27
- 239000004020 conductor Substances 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 10
- 230000002572 peristaltic effect Effects 0.000 description 7
- 238000010248 power generation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
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- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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Abstract
Description
本発明は、非接触給電装置に関し、送電コイルが設けられるコアの構造に関する。 The present invention relates to a non-contact power feeding device, and relates to a core structure provided with a power transmission coil.
非接触給電装置が広く用いられている。非接触給電装置は、受電装置に配線接続されない状態で受電装置に電力を供給する。一般に、非接触給電装置は送電コイルを備え、受電装置は受電コイルを備えている。非接触給電装置には、電磁誘導によって受電装置に電力を供給する電磁誘導方式のものがある。この場合、送電コイルは、受電コイルとの間の磁気的な結合によって受電コイルに誘導起電力を発生させて、受電装置に電力を供給する。 Non-contact power feeding devices are widely used. The non-contact power feeding device supplies power to the power receiving device without being connected to the power receiving device by wiring. In general, the non-contact power supply device includes a power transmission coil, and the power reception device includes a power reception coil. Some non-contact power feeding devices are of an electromagnetic induction type that supplies power to a power receiving device by electromagnetic induction. In this case, the power transmission coil generates an induced electromotive force in the power receiving coil by magnetic coupling with the power receiving coil, and supplies power to the power receiving device.
受電装置には、携帯情報端末、ゲーム機器、電動歯ブラシ、電動シェーバー等がある。一般に、これらの装置は繰り返し充放電が可能な二次電池を備えており、二次電池が非接触給電装置によって充電される。充電の際には受電装置が非接触給電装置の所定の位置に配置され、非接触給電装置から受電装置の二次電池に充電電力が供給される。 Examples of the power receiving device include a portable information terminal, a game machine, an electric toothbrush, and an electric shaver. Generally, these devices include a secondary battery that can be repeatedly charged and discharged, and the secondary battery is charged by a non-contact power feeding device. During charging, the power receiving device is disposed at a predetermined position of the non-contact power feeding device, and charging power is supplied from the non-contact power feeding device to the secondary battery of the power receiving device.
以下の特許文献１には、非接触給電技術（ワイヤレス給電技術）に関する記載がある。 Patent Document 1 below describes a non-contact power feeding technology (wireless power feeding technology).
非接触給電装置では、送電コイルの構造や送電コイルの位置によっては、受電コイルに鎖交しない漏れ磁束が増加することがある。また、非接触給電装置には、複数の受電装置に同時に電力を供給することが可能なものがある。このような非接触給電装置では、複数の受電装置のそれぞれにおける受電コイルが互いに磁気的に影響を及ぼし合い、各受電コイルに鎖交しない漏れ磁束が増加することがある。漏れ磁束が増加した場合、非接触給電装置から受電装置に十分な電力を送電することが困難となってしまう場合がある。 In the non-contact power supply apparatus, depending on the structure of the power transmission coil and the position of the power transmission coil, leakage magnetic flux that does not link to the power reception coil may increase. Some non-contact power feeding devices can supply power to a plurality of power receiving devices at the same time. In such a non-contact power feeding device, the power receiving coils in each of the plurality of power receiving devices may magnetically affect each other, and the leakage magnetic flux that does not interlink with each power receiving coil may increase. When the leakage magnetic flux increases, it may be difficult to transmit sufficient power from the non-contact power feeding device to the power receiving device.
本発明は、非接触給電装置から発生し、受電装置の受電コイルに鎖交する磁束を増加させることを目的とする。 An object of the present invention is to increase a magnetic flux generated from a non-contact power feeding device and interlinked with a power receiving coil of a power receiving device.
本発明は、送電コイルと、前記送電コイルを形成する導線が巻かれた送電コアとを備える非接触給電装置において、前記送電コアは、移動自在となっている移動部分を含み、受電装置が配置されたときに、当該受電装置から与えられる力によって前記移動部分が前記送電コアのその他の部分から離れ、前記受電装置が備える受電コアであって、前記受電装置が備える受電コイルを形成する導線が巻かれた受電コアが、前記移動部分が存在していた領域に挿入されることを特徴とする。 The present invention relates to a non-contact power supply apparatus including a power transmission coil and a power transmission core wound with a conductive wire forming the power transmission coil, wherein the power transmission core includes a movable part that is movable, and the power reception apparatus is disposed. When the power is received, the moving part is separated from the other parts of the power transmission core by the force applied from the power receiving device, and the power receiving core included in the power receiving device is a conductor that forms a power receiving coil included in the power receiving device. The wound power receiving core is inserted into a region where the moving part was present.
望ましくは、前記送電コアはループ形状を有し、前記送電コアの第１の区間に前記移動部分が設けられており、前記非接触給電装置は、前記移動部分と、前記第１の区間に対向する第２の区間との間に設けられた付勢部材を備える。 Preferably, the power transmission core has a loop shape, the moving portion is provided in a first section of the power transmission core, and the non-contact power feeding device is opposed to the moving section and the first section. A biasing member provided between the second section and the second section.
本発明によれば、非接触給電装置から発生し、受電装置の受電コイルに鎖交する磁束を増加させることができる。 ADVANTAGE OF THE INVENTION According to this invention, the magnetic flux which generate | occur | produces from a non-contact electric power feeder and is linked to the receiving coil of a receiving device can be increased.
図１には、本発明の実施形態に係る非接触給電システムが示されている。非接触給電システムは、非接触給電装置１および受電装置２を備えている。非接触給電装置１は、受電装置２に磁気的に結合し、非接触給電によって受電装置２に電力を供給する。非接触給電装置１は、複数の受電装置２に同時に電力を供給してもよい。図１には、４台の受電装置２に電力が供給可能な非接触給電装置１が例示されている。 FIG. 1 shows a non-contact power feeding system according to an embodiment of the present invention. The non-contact power feeding system includes a non-contact power feeding device 1 and a power receiving device 2. The non-contact power feeding device 1 is magnetically coupled to the power receiving device 2 and supplies power to the power receiving device 2 by non-contact power feeding. The non-contact power feeding device 1 may supply power to the plurality of power receiving devices 2 at the same time. FIG. 1 illustrates a non-contact power feeding device 1 that can supply power to four power receiving devices 2.
非接触給電装置１は、電力発生回路１０、送電コア１２、送電コイル１４、バネ１８および送電側筐体２０を備えている。送電コア１２は、磁性体材料によって形成されている。磁性体材料としては、鉄、ケイ素鋼、パーマロイ等が用いられる。図１に示された受電コア２４は、矩形状に周回するループ形状を有している。なお、以下の説明における「上」「下」「左」「右」の用語は、図面における上下左右を示し、非接触給電装置１が用いられる際の姿勢を限定するものではない。 The non-contact power feeding device 1 includes a power generation circuit 10, a power transmission core 12, a power transmission coil 14, a spring 18, and a power transmission side housing 20. The power transmission core 12 is made of a magnetic material. As the magnetic material, iron, silicon steel, permalloy or the like is used. The power receiving core 24 shown in FIG. 1 has a loop shape that circulates in a rectangular shape. Note that the terms “upper”, “lower”, “left”, and “right” in the following description indicate up, down, left, and right in the drawings, and do not limit the posture when the non-contact power feeding device 1 is used.
送電コア１２は、左側において上下方向に延びる左側縦辺区間、右側において上下方向に延びる右側縦辺区間、上側において横方向に延びる上側横辺区間、および、下側において横方向に延びる下側横辺区間を備えている。下側横辺区間には導線が巻き付けられており、この導線によって送電コイル１４が形成されている。電力発生回路１０には送電コイル１４の両端が接続されている。 The power transmission core 12 includes a left vertical side section extending in the vertical direction on the left side, a right vertical side section extending in the vertical direction on the right side, an upper horizontal side section extending in the horizontal direction on the upper side, and a lower horizontal side extending in the horizontal direction on the lower side. It has a side section. A conducting wire is wound around the lower lateral side section, and a power transmission coil 14 is formed by this conducting wire. Both ends of a power transmission coil 14 are connected to the power generation circuit 10.
送電コア１２は、上下方向に移動自在な移動部分１６と、その他の部分である送電コア１２の本体とを含んでいる。図１には、送電コア１２の上側横辺区間に４つの移動部分１６が設けられた例が示されている。各移動部分１６の下方には、下側横辺区間との間にバネ１８が設けられている。バネ１８は移動部分１６を上方向に付勢する。バネ１８には、例えば、つるまきバネが用いられる。送電コア１２の本体と共にループ形状を形成する移動部分１６は、下方向への移動によって送電コア１２の本体から離れる。また、送電コア１２の本体から離れた移動部分１６は、上方向への移動によって送電コア１２のループ上に戻る。 The power transmission core 12 includes a moving portion 16 that is movable in the vertical direction, and a main body of the power transmission core 12 that is the other portion. FIG. 1 shows an example in which four moving parts 16 are provided in the upper side section of the power transmission core 12. A spring 18 is provided below each moving portion 16 and between the lower lateral section. The spring 18 biases the moving part 16 upward. For example, a helical spring is used as the spring 18. The moving portion 16 that forms a loop shape with the main body of the power transmission core 12 moves away from the main body of the power transmission core 12 by moving downward. Moreover, the moving part 16 away from the main body of the power transmission core 12 returns to the loop of the power transmission core 12 by the upward movement.
このように、本実施形態における送電コア１２は矩形のループ形状を有し、送電コア１２の第１の辺を形成する区間である上側横辺区間（第１の区間）に移動部分１６が設けられている。移動部分１６と、第１の辺に対向する第２の辺を形成する区間である下側横辺区間（第２の区間）との間に、付勢部材としてのバネ１８が設けられている。送電コア１２は、矩形の他、矩形以外の多角形、楕円等のループ形状を有していてもよい。 As described above, the power transmission core 12 in the present embodiment has a rectangular loop shape, and the moving portion 16 is provided in the upper horizontal side section (first section) that is a section forming the first side of the power transmission core 12. It has been. A spring 18 as an urging member is provided between the moving portion 16 and a lower horizontal side section (second section) that is a section that forms a second side facing the first side. . The power transmission core 12 may have a loop shape such as a polygon other than a rectangle or an ellipse in addition to a rectangle.
送電側筐体２０は、電力発生回路１０、送電コイル１４、送電コア１２およびバネ１８を収容している。送電側筐体２０は、底板２０１、底板２０１の周辺から上方向に広がる側壁２０２、および、側壁２０２に囲まれた領域を上側から覆う天井板２０３から構成されている。天井板２０３には、送電コア１２に含まれる各移動部分１６に対向する位置に、受け入れ穴３２が設けられている。 The power transmission side housing 20 accommodates the power generation circuit 10, the power transmission coil 14, the power transmission core 12, and the spring 18. The power transmission side housing 20 includes a bottom plate 201, a side wall 202 that extends upward from the periphery of the bottom plate 201, and a ceiling plate 203 that covers a region surrounded by the side wall 202 from above. The ceiling plate 203 is provided with a receiving hole 32 at a position facing each moving portion 16 included in the power transmission core 12.
受電装置２は、受電コイル２２、受電コア２４、整流回路２６、負荷回路２８および受電側筐体３０を備えている。受電コア２４は、棒状の磁性体材料によって形成されている。受電コア２４を形成する磁性体材料としては、送電コア１２と同様、鉄、ケイ素鋼、パーマロイ等が用いられる。受電コア２４には導線が巻き付けられており、この導線が受電コイル２２を形成している。受電コイル２２の両端には整流回路２６が接続されている。整流回路２６には負荷回路２８が接続されている。負荷回路２８は、充電および放電を繰り返して行うことが可能な二次電池を含んでいてもよい。受電コイル２２、受電コア２４、整流回路２６および負荷回路２８は、受電側筐体３０に収容されている。 The power receiving device 2 includes a power receiving coil 22, a power receiving core 24, a rectifier circuit 26, a load circuit 28, and a power receiving side housing 30. The power receiving core 24 is made of a rod-shaped magnetic material. As the magnetic material forming the power receiving core 24, iron, silicon steel, permalloy or the like is used as in the power transmitting core 12. A conducting wire is wound around the power receiving core 24, and the conducting wire forms a power receiving coil 22. A rectifier circuit 26 is connected to both ends of the power receiving coil 22. A load circuit 28 is connected to the rectifier circuit 26. The load circuit 28 may include a secondary battery that can be repeatedly charged and discharged. The power receiving coil 22, the power receiving core 24, the rectifier circuit 26 and the load circuit 28 are accommodated in the power receiving side housing 30.
非接触給電システムの動作について説明する。非接触給電装置１は、送電側筐体２０の受け入れ穴３２に受電装置２が挿入されることで、受電装置２に磁気的に結合する。非接触給電装置１および受電装置２が磁気的に結合した状態で、非接触給電装置１は受電装置２に電力を供給する。図１の左側の受電装置２は、送電側筐体２０の受け入れ穴３２に挿入される前の状態にあり、左から２番目の受電装置２は、送電側筐体２０の受け入れ穴３２に挿入された状態にある。二点鎖線（想像線）で示された受電装置２は、左側の２台の受電装置２に加えて、更に２台の受電装置２に電力を供給可能であることを示すものである。 The operation of the non-contact power supply system will be described. The non-contact power feeding device 1 is magnetically coupled to the power receiving device 2 by inserting the power receiving device 2 into the receiving hole 32 of the power transmission side housing 20. The contactless power feeding device 1 supplies power to the power receiving device 2 in a state where the contactless power feeding device 1 and the power receiving device 2 are magnetically coupled. The power receiving device 2 on the left side of FIG. 1 is in a state before being inserted into the receiving hole 32 of the power transmission side housing 20, and the second power receiving device 2 from the left is inserted into the receiving hole 32 of the power transmission side housing 20. It is in the state that was done. The power receiving device 2 indicated by a two-dot chain line (imaginary line) indicates that power can be supplied to two power receiving devices 2 in addition to the two power receiving devices 2 on the left side.
送電側筐体２０の受け入れ穴３２に受電装置２が挿入されていないときは、移動部分１６はバネ１８から上方向に力が与えられており、送電コア１２のループ上に配置された状態にある。受け入れ穴３２に受電装置２が上方向から挿入されると、受け入れ穴３２の下方にある移動部分１６に受電装置２が接触する。受電装置２は、自らの重みによって移動部分１６に下方向の力を与え、移動部分１６は受電装置２と共に下方向に移動する。バネ１８が完全に収縮した状態で受電装置２および移動部分１６は停止する。あるいは、バネ１８から移動部分１６に上方向に与えられる力と、受電装置２および移動部分１６の重みとが釣り合う状態で、受電装置２および移動部分１６は停止する。これによって、移動部分１６は送電コア１２の本体から離れ、受電装置２における受電コア２４は、送電コア１２において移動部分１６が存在していた領域に挿入される。すなわち、受電コア２４は、送電コア１２において移動部分１６が欠落した欠落領域に挿入される。 When the power receiving device 2 is not inserted into the receiving hole 32 of the power transmission side housing 20, the moving portion 16 is applied with an upward force from the spring 18 and is placed on the loop of the power transmission core 12. is there. When the power receiving device 2 is inserted into the receiving hole 32 from above, the power receiving device 2 contacts the moving portion 16 below the receiving hole 32. The power receiving device 2 applies a downward force to the moving portion 16 by its own weight, and the moving portion 16 moves downward together with the power receiving device 2. With the spring 18 completely contracted, the power receiving device 2 and the moving portion 16 are stopped. Alternatively, the power receiving device 2 and the moving portion 16 stop in a state where the force applied upward from the spring 18 to the moving portion 16 and the weight of the power receiving device 2 and the moving portion 16 are balanced. As a result, the moving part 16 is separated from the main body of the power transmission core 12, and the power receiving core 24 in the power receiving device 2 is inserted into the region where the moving part 16 was present in the power transmission core 12. That is, the power receiving core 24 is inserted into a missing region where the moving part 16 is missing in the power transmitting core 12.
図１では、左から２番目に描かれている受電装置２が、左から２番目の受け入れ穴３２に挿入された例が示されている。受電装置２が備える受電コア２４は、送電コア１２の上側横辺区間に生じた欠落領域に挿入され、移動部分１６が欠落した上側横辺区間および受電コア２４が直線状に配置される。送電コア１２の下側横辺区間、左側縦辺区間、移動部分１６が欠落した上側横辺区間、受電コア２４、および右側縦辺区間は、磁束が集中する磁束経路を形成する。 FIG. 1 shows an example in which the power receiving device 2 drawn second from the left is inserted into the second receiving hole 32 from the left. The power receiving core 24 included in the power receiving device 2 is inserted into a missing region generated in the upper lateral section of the power transmitting core 12, and the upper lateral section in which the moving portion 16 is missing and the power receiving core 24 are linearly arranged. The lower horizontal section, the left vertical section, the upper horizontal section in which the moving portion 16 is missing, the power receiving core 24, and the right vertical section form a magnetic flux path where magnetic flux concentrates.
電力発生回路１０は送電コイル１４に交流電圧を出力する。これによって、送電コイル１４からは、送電コア１２および受電コア２４が形成する磁束経路を通り、受電コイル２２に鎖交する磁束Φが発生する。送電コイル１４から発せられ、受電コイル２２に鎖交する磁束によって、受電コイル２２に誘導起電力が発生する。 The power generation circuit 10 outputs an AC voltage to the power transmission coil 14. As a result, a magnetic flux Φ interlinked with the power receiving coil 22 is generated from the power transmitting coil 14 through a magnetic flux path formed by the power transmitting core 12 and the power receiving core 24. An induced electromotive force is generated in the power receiving coil 22 by the magnetic flux emitted from the power transmitting coil 14 and interlinked with the power receiving coil 22.
受電コイル２２に発生した誘導起電力は整流回路２６に印加される。整流回路２６は、交流電圧である誘導起電力を整流し、負荷回路２８に直流電圧を出力する。負荷回路２８は、整流回路２６から出力された電圧に基づいて動作する。負荷回路２８は、二次電池を備える場合には二次電池を充電する。 The induced electromotive force generated in the power receiving coil 22 is applied to the rectifier circuit 26. The rectifier circuit 26 rectifies the induced electromotive force that is an AC voltage, and outputs a DC voltage to the load circuit 28. The load circuit 28 operates based on the voltage output from the rectifier circuit 26. When the load circuit 28 includes a secondary battery, the load circuit 28 charges the secondary battery.
このような構成によれば、受電装置２が非接触給電装置１における所定の位置に配置されたときには、受電装置２から与えられる力によって、送電コア１２の移動部分１６が送電コア１２の本体から離れる。そして、移動部分１６が存在していた領域に受電コア２４が挿入され、送電コア１２および受電コア２４が磁束経路を形成する。非接触給電装置１が発生し、受電コイル２２に鎖交する磁束は、送電コア１２および受電コア２４が形成する磁束経路に集中する。これによって、送電コア１２および受電コア２４による磁束経路がない場合に比べて、受電コイル２２に鎖交する磁束が増加する。また、複数の受電装置２が非接触給電装置１に配置された場合であっても、複数の受電装置２における受電コア２４のそれぞれと送電コア１２が磁束経路を形成する。したがって、１つの受電装置２が他の受電装置２に対して磁気的に及ぼす影響が小さくなって漏れ磁束が低減され、高効率で各受電装置２に電力が供給される。 According to such a configuration, when the power receiving device 2 is disposed at a predetermined position in the non-contact power feeding device 1, the moving portion 16 of the power transmission core 12 is moved from the main body of the power transmission core 12 by the force applied from the power receiving device 2. Leave. Then, the power receiving core 24 is inserted into the region where the moving part 16 was present, and the power transmitting core 12 and the power receiving core 24 form a magnetic flux path. The magnetic flux generated by the non-contact power feeding device 1 and interlinked with the power receiving coil 22 is concentrated on the magnetic flux path formed by the power transmitting core 12 and the power receiving core 24. As a result, the magnetic flux linked to the power receiving coil 22 increases as compared with the case where there is no magnetic flux path by the power transmitting core 12 and the power receiving core 24. Even when the plurality of power receiving devices 2 are arranged in the non-contact power feeding device 1, each of the power receiving cores 24 and the power transmitting core 12 in the plurality of power receiving devices 2 form a magnetic flux path. Accordingly, the influence of one power receiving device 2 on the other power receiving devices 2 is reduced, the leakage magnetic flux is reduced, and power is supplied to each power receiving device 2 with high efficiency.
図２には、変形例に係る非接触給電装置３が示されている。図１に示されている構成要素と同一の構成要素については同一の符号を付してその説明を省略する。非接触給電装置３では、移動部分１６が揺動付勢機構３４によって送電コア１２の本体に取り付けられている。図２の搖動付勢機構３４は、その構造を概念的に示したものである。搖動付勢機構３４は、送電コア１２のループ上に配置される位置と、送電コア１２の本体から離れた位置との間で、移動部分１６を搖動自在とする。搖動付勢機構３４は、送電コア１２のループ上に配置される位置に向けて移動部分１６を付勢する。搖動付勢機構３４は、例えば、スプリングヒンジを用いて構成される。 FIG. 2 shows a non-contact power feeding device 3 according to a modification. The same components as those shown in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In the non-contact power feeding device 3, the moving part 16 is attached to the main body of the power transmission core 12 by the swing biasing mechanism 34. The peristaltic urging mechanism 34 in FIG. 2 conceptually shows the structure. The swing urging mechanism 34 allows the moving portion 16 to swing between a position where it is arranged on the loop of the power transmission core 12 and a position away from the main body of the power transmission core 12. The peristaltic urging mechanism 34 urges the moving part 16 toward a position where it is arranged on the loop of the power transmission core 12. The swing urging mechanism 34 is configured using, for example, a spring hinge.
送電側筐体２０の受け入れ穴３２に受電装置２が挿入されていないときは、移動部分１６は搖動付勢機構３４から上方向に力が与えられており、送電コア１２のループ上に配置された状態にある。受け入れ穴３２に受電装置２が上方向から挿入されると、受け入れ穴３２の下方にある移動部分１６に受電装置２が接触する。受電装置２は、自らの重みによって移動部分１６に下方向の力を与え、移動部分１６は受電装置２と共に下方向に移動し、搖動付勢機構３４の側を軸中心として回転する。搖動付勢機構３４が移動部分１６の下方向への移動を抑止する状態となったときに、受電装置２および移動部分１６は停止する。あるいは、搖動付勢機構３４から移動部分１６に上方向に与えられる力と、受電装置２および移動部分１６の重みとが釣り合う状態で、受電装置２および移動部分１６は停止する。これによって、移動部分１６は送電コア１２の本体から離れ、受電装置２における受電コア２４は、送電コア１２の欠落領域に挿入される。 When the power receiving device 2 is not inserted into the receiving hole 32 of the power transmission side housing 20, the moving portion 16 is applied with an upward force from the peristaltic biasing mechanism 34 and is disposed on the loop of the power transmission core 12. It is in the state. When the power receiving device 2 is inserted into the receiving hole 32 from above, the power receiving device 2 contacts the moving portion 16 below the receiving hole 32. The power receiving device 2 applies a downward force to the moving portion 16 by its own weight, and the moving portion 16 moves downward together with the power receiving device 2 and rotates around the side of the peristaltic biasing mechanism 34. When the peristaltic biasing mechanism 34 enters a state in which the movement portion 16 is prevented from moving downward, the power receiving device 2 and the movement portion 16 are stopped. Alternatively, the power receiving device 2 and the moving portion 16 stop in a state where the force applied upward from the peristaltic biasing mechanism 34 to the moving portion 16 and the weight of the power receiving device 2 and the moving portion 16 are balanced. As a result, the moving portion 16 is separated from the main body of the power transmission core 12, and the power reception core 24 in the power reception device 2 is inserted into the missing region of the power transmission core 12.
図２では、左側に描かれている受電装置２が、左側の受け入れ穴３２に挿入された例が示されている。受電装置２が備える受電コア２４は、送電コア１２の欠落領域に挿入される。これによって、送電コア１２の下側横辺区間、左側縦辺区間、移動部分１６が欠落した上側横辺区間、受電コア２４、および右側縦辺区間は、磁束が集中する磁束経路を形成する。この状態において、非接触給電装置３は、図１に示された非接触給電装置１と同様の動作によって、受電装置２に電力を供給する。 FIG. 2 shows an example in which the power receiving device 2 depicted on the left side is inserted into the left receiving hole 32. The power receiving core 24 included in the power receiving device 2 is inserted into the missing region of the power transmitting core 12. As a result, the lower horizontal section, the left vertical section, the upper horizontal section in which the moving part 16 is missing, the power receiving core 24, and the right vertical section form a magnetic flux path where magnetic flux concentrates. In this state, the non-contact power feeding device 3 supplies power to the power receiving device 2 by the same operation as the non-contact power feeding device 1 shown in FIG.
このような構成によれば、受電装置２が非接触給電装置３における所定の位置に配置されたときには、受電装置２から与えられる力によって、送電コア１２の移動部分１６が送電コア１２の本体から離れる。そして、受電コア２４は、送電コア１２の欠落領域に挿入され、送電コア１２および受電コア２４が磁束経路を形成する。非接触給電装置３が発生し、受電コイル２２に鎖交する磁束は、送電コア１２および受電コア２４が形成する磁束経路に集中する。これによって、送電コア１２および受電コア２４による磁束経路がない場合に比べて、受電コイル２２に鎖交する磁束が増加する。また、複数の受電装置２が非接触給電装置３に配置された場合であっても、複数の受電装置２における受電コア２４のそれぞれと送電コア１２が磁束経路を形成する。したがって、１つの受電装置２が他の受電装置２に対して磁気的に及ぼす影響が小さくなって漏れ磁束が低減され、高効率で各受電装置２に電力が供給される。 According to such a configuration, when the power receiving device 2 is disposed at a predetermined position in the non-contact power feeding device 3, the moving portion 16 of the power transmission core 12 is moved from the main body of the power transmission core 12 by the force applied from the power receiving device 2. Leave. The power receiving core 24 is inserted into the missing region of the power transmission core 12, and the power transmission core 12 and the power reception core 24 form a magnetic flux path. The magnetic flux generated by the non-contact power feeding device 3 and interlinked with the power receiving coil 22 is concentrated on the magnetic flux path formed by the power transmitting core 12 and the power receiving core 24. As a result, the magnetic flux linked to the power receiving coil 22 is increased as compared with the case where there is no magnetic flux path by the power transmitting core 12 and the power receiving core 24. Even when the plurality of power receiving devices 2 are arranged in the non-contact power feeding device 3, each of the power receiving cores 24 and the power transmitting core 12 in the plurality of power receiving devices 2 form a magnetic flux path. Accordingly, the influence of one power receiving device 2 on the other power receiving devices 2 is reduced, the leakage magnetic flux is reduced, and power is supplied to each power receiving device 2 with high efficiency.
１，３ 非接触給電装置、２ 受電装置、１０ 電力発生回路、１２ 送電コア、１４ 送電コイル、１６ 移動部分、１８ バネ、２０ 送電側筐体、２０１ 底板、２０２ 側壁、２０３ 天井板、２２ 受電コイル、２４ 受電コア、２６ 整流回路、２８ 負荷回路、３０ 受電側筐体、３２ 受け入れ穴、３４ 搖動付勢機構。 DESCRIPTION OF SYMBOLS 1,3 Non-contact electric power feeder, 2 Power receiving apparatus, 10 Electric power generation circuit, 12 Power transmission core, 14 Power transmission coil, 16 Moving part, 18 Spring, 20 Power transmission side housing, 201 Bottom plate, 202 Side wall, 203 Ceiling plate, 22 Coil, 24 power receiving core, 26 rectifier circuit, 28 load circuit, 30 power receiving side housing, 32 receiving hole, 34 peristaltic biasing mechanism.
Claims (2)
前記送電コアは、移動自在となっている移動部分を含み、
受電装置が配置されたときに、当該受電装置から与えられる力によって前記移動部分が前記送電コアのその他の部分から離れ、
前記受電装置が備える受電コアであって、前記受電装置が備える受電コイルを形成する導線が巻かれた受電コアが、前記移動部分が存在していた領域に挿入されることを特徴とする非接触給電装置。 In a non-contact power feeding device including a power transmission coil and a power transmission core wound with a conductive wire forming the power transmission coil,
The power transmission core includes a moving part that is movable,
When the power receiving device is arranged, the moving part is separated from the other part of the power transmission core by the force applied from the power receiving device,
A power receiving core provided in the power receiving device, wherein the power receiving core around which a conductive wire forming a power receiving coil provided in the power receiving device is wound is inserted into a region where the moving portion was present. Power supply device.
前記送電コアはループ形状を有し、
前記送電コアの第１の区間に前記移動部分が設けられており、
前記非接触給電装置は、
前記移動部分と、前記第１の区間に対向する第２の区間との間に設けられた付勢部材を備えることを特徴とする非接触給電装置。 The contactless power supply device according to claim 1,
The power transmission core has a loop shape;
The moving portion is provided in a first section of the power transmission core;
The non-contact power feeding device is:
A non-contact power feeding apparatus comprising: an urging member provided between the moving part and a second section facing the first section.
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