JP6130186B2 - Electric vehicle power supply system - Google Patents
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- JP6130186B2 JP6130186B2 JP2013070285A JP2013070285A JP6130186B2 JP 6130186 B2 JP6130186 B2 JP 6130186B2 JP 2013070285 A JP2013070285 A JP 2013070285A JP 2013070285 A JP2013070285 A JP 2013070285A JP 6130186 B2 JP6130186 B2 JP 6130186B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Description
本発明は、地面側から電動車両に無線で電力を伝送する電動車両給電システムに関する。 The present invention relates to an electric vehicle power feeding system that wirelessly transmits electric power from a ground side to an electric vehicle.
近年、蓄電池に蓄えられた電力を用いて車輪をモータにより駆動する電気自動車が普及しつつある。この電気自動車は、一般には、蓄電池に蓄えられた電力が少なくなると、所定の駐車スペースに駐車して、充電用ケーブルを充電設備に接続して充電する。 2. Description of the Related Art In recent years, electric vehicles that drive wheels with a motor using electric power stored in a storage battery are becoming widespread. In general, when the electric power stored in the storage battery decreases, the electric vehicle is parked in a predetermined parking space, and is charged by connecting a charging cable to a charging facility.
これに対して、充電用ケーブルを用いないで、地面側から無線で電気自動車に電力を伝送しその蓄電池を充電する種々の提案がなされている。無線の電力伝送には、結合共振器方式、電磁誘導方式、放射電磁波方式などがある。例えば、特許文献１には、電動車両（電気自動車を含む。）側と地面側に共振コイルを設け、それらを共振させることで電力を伝送する結合共振器方式の電動車両給電システムが記載されている。電動車両側の共振コイルは、車体下部又は車輪に設けられている。また、地面側の共振コイルは中心軸を鉛直方向にして巻かれている。 On the other hand, various proposals have been made in which power is transmitted wirelessly from the ground side to the electric vehicle and the storage battery is charged without using a charging cable. Wireless power transmission includes a coupled resonator method, an electromagnetic induction method, a radiated electromagnetic wave method, and the like. For example, Patent Document 1 describes a coupled resonator type electric vehicle power feeding system in which resonance coils are provided on the electric vehicle (including an electric vehicle) side and the ground side, and electric power is transmitted by resonating them. Yes. The resonance coil on the electric vehicle side is provided at the lower part of the vehicle body or at the wheel. The ground-side resonance coil is wound with the central axis in the vertical direction.
特許文献２には、電気自動車の車輪の中に複数の発電コイルをそれらの中心軸が車輪中心に向くように周回させて設け、地面側には道路の伸びる方向に互いに離間して複数の起磁部材を配置し、起磁部材から発電コイルに電磁誘導により電力を伝送する方式の電動車両給電システムが記載されている。この電動車両給電システムでは、電気自動車が走行していても起磁部材から発電コイルに電力を伝送することができる、としている。 In Patent Document 2, a plurality of power generation coils are provided in a wheel of an electric vehicle so that their central axes are directed toward the center of the wheel, and a plurality of starting coils are separated from each other in the direction in which the road extends on the ground side. There is described an electric vehicle power feeding system in which a magnetic member is arranged and electric power is transmitted from a magnetomotive member to a power generation coil by electromagnetic induction. In this electric vehicle power feeding system, power can be transmitted from the magnetomotive member to the power generation coil even when the electric vehicle is running.
特許文献１のような結合共振器方式の電動車両給電システムは、高い電力伝送効率を得ることができる。また、駐車スペースと充電時間を考慮すると、特許文献２のように電動車両が走行していても電力を伝送できるのが望ましい。しかし、特許文献１の電動車両給電システムを走行する電動車両に用いるには、地面側の共振コイルを複数設けることになると考えられるが、その場合の地面側の送電装置は大規模なものとなる。 The coupled-resonator-type electric vehicle power feeding system as in Patent Document 1 can obtain high power transmission efficiency. In consideration of the parking space and the charging time, it is desirable that electric power can be transmitted even if the electric vehicle is running as in Patent Document 2. However, in order to use the electric vehicle power supply system of Patent Document 1 for an electric vehicle that travels, it is considered that a plurality of ground-side resonance coils are provided. In this case, the ground-side power transmission device is large-scale. .
本発明は、係る事由に鑑みてなされたものであり、その目的は、電動車両が停止していても、或いは走行していても、地面側の送電装置から電動車両に無線で共振により電力を伝送でき、しかも送電装置が大規模にならない電動車両給電システムを提供することにある。 The present invention has been made in view of the above reasons, and its purpose is to wirelessly resonate electric power from a power transmission device on the ground side to an electric vehicle even when the electric vehicle is stopped or running. An object of the present invention is to provide an electric vehicle power feeding system that can transmit and that does not have a large-scale power transmission device.
上記目的を達成するために、請求項１に記載の電動車両給電システムは、地面側の送電装置から電動車両に無線で電力を伝送し得る電動車両給電システムであって、前記送電装置は、環状に形成されており地面表面に沿って直線状に延伸する直線延伸部分を少なくとも１つ有する送電線路と、該送電線路と直列に設けられた送電側コンデンサと、前記送電線路に電力を送出する交流電源と、を備えて前記送電線路と前記送電側コンデンサが送電側共振器を構成しており、前記電動車両は、車輪の内部に収容されその回転軸のまわりを周回して巻かれており、前記直線延伸部分の直上近傍にあるときに前記送電側共振器から共振により電力が伝送される受電側共振器を構成する主コイルと、該主コイルに電磁誘導により結合する副コイルと、を備えて前記送電側共振器から前記受電側共振器に共振により伝送された電力を前記副コイルから蓄電池が含まれる負荷に送ることを特徴とする。 In order to achieve the above object, an electric vehicle power feeding system according to claim 1 is an electric vehicle power feeding system capable of wirelessly transmitting electric power from a ground-side power transmitting device to an electric vehicle. A power transmission line having at least one linearly extending portion that extends linearly along the ground surface, a power transmission side capacitor provided in series with the power transmission line, and an alternating current that sends power to the power transmission line A power source, and the power transmission line and the power transmission side capacitor form a power transmission side resonator, and the electric vehicle is housed in a wheel and wound around its rotation axis , a main coil constituting the power receiving side resonator power is transferred by resonance from the transmitting-side resonator when in the vicinity immediately above the linear extension portions, and the sub-coil coupling by electromagnetic induction to the main coil, the Ete wherein the sending the power transmitted by the resonance in the power receiving side resonator from the transmitting-side resonator to the load from the secondary coil includes a storage battery.
請求項２に記載の電動車両給電システムは、請求項１に記載の電動車両給電システムにおいて、前記主コイルと直列に受電側コンデンサが設けられており、前記主コイルと該受電側コンデンサが前記受電側共振器を構成していることを特徴とする。 The electric vehicle power feeding system according to claim 2 is the electric vehicle power feeding system according to claim 1 , wherein a power receiving side capacitor is provided in series with the main coil, and the main coil and the power receiving side capacitor are connected to the power receiving side. A side resonator is formed.
請求項３に記載の電動車両給電システムは、請求項１又は２に記載の電動車両給電システムにおいて、前記送電装置の送電線路は、前記直線延伸部分を２つ有していることを特徴とする。 The electric vehicle power feeding system according to claim 3 is the electric vehicle power feeding system according to claim 1 or 2 , wherein a power transmission line of the power transmission device has two straight extending portions. .
本発明に係る電動車両給電システムによれば、電動車両が停止していても、或いは走行していても、送電装置から電動車両に共振により電力を伝送でき、しかも送電装置が大規模にならないようにすることができる。 According to the electric vehicle power feeding system of the present invention, even when the electric vehicle is stopped or running, power can be transmitted from the power transmission device to the electric vehicle by resonance, and the power transmission device does not become large-scale. Can be.
以下、本発明を実施するための形態を図面を参照しながら説明する。本発明の実施形態に係る電動車両給電システム１は、図１及び図２に示すように、地面側の送電装置２から電動車両３に無線で電力を伝送し得る電動車両給電システムである。なお、図１においては、後述する受電側コンデンサ３２、３２’の図示は省略している。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The electric vehicle electric power feeding system 1 which concerns on embodiment of this invention is an electric vehicle electric power feeding system which can transmit electric power to the electric vehicle 3 from the power transmission apparatus 2 of the ground side as shown in FIG.1 and FIG.2. In FIG. 1, illustration of power receiving side capacitors 32 and 32 'to be described later is omitted.
送電装置２は、送電線路２１と送電側コンデンサ２２と交流電源２３とを備えている。送電線路２１は、図３に示すように、環状に形成されており、地面表面に沿って直線状に延伸する２つの直線延伸部分２１ａ、２１ａ’を有している。送電線路２１の直線延伸部分２１ａ、２１ａ’は、例えば、断面長方形の板状（図１参照。）、又は断面円形のケーブル状などとすることができる。この送電線路２１の直線延伸部分２１ａ、２１ａ’は、長く延伸することによってインダクタンス成分を有することになる。直線延伸部分２１ａ、２１ａ’は、電流が流れると、その延伸方向に対して周回する磁場を生成する。 The power transmission device 2 includes a power transmission line 21, a power transmission side capacitor 22, and an AC power source 23. As shown in FIG. 3, the power transmission line 21 is formed in an annular shape, and has two linearly extending portions 21 a and 21 a ′ that extend linearly along the ground surface. The linearly-extending portions 21a and 21a 'of the power transmission line 21 may be, for example, a plate shape with a rectangular cross section (see FIG. 1) or a cable shape with a circular cross section. The linearly extending portions 21a and 21a 'of the power transmission line 21 have an inductance component by extending long. When the current flows, the linearly extending portions 21a and 21a 'generate a magnetic field that circulates in the extending direction.
また、送電側コンデンサ２２は、送電線路２１と直列に設けられている。また、交流電源２３は、送電線路２１に電力を送出するものである。そして、送電線路２１と送電側コンデンサ２２が送電側共振器２０を構成することになる。 The power transmission side capacitor 22 is provided in series with the power transmission line 21. The AC power source 23 sends power to the power transmission line 21. The power transmission line 21 and the power transmission side capacitor 22 constitute the power transmission side resonator 20.
また、道路では、図３に示すように、送電装置２を複数設け、隣接する送電装置２、２は、送電線路２１、２１の直線延伸部分２１ａ、２１ａ同士が一直線を成すように、また、直線延伸部分２１ａ’、２１ａ’同士が一直線を成すように、配置することができる。送電線路２１の直線延伸部分２１ａ、２１ａ’の長さは、例えば、１０ｍ〜２０ｍとすることができる。 Also, on the road, as shown in FIG. 3, a plurality of power transmission devices 2 are provided, and adjacent power transmission devices 2, 2 are arranged so that the straight extension portions 21 a, 21 a of the power transmission lines 21, 21 form a straight line, It can arrange | position so that linear extension part 21a 'and 21a' may form a straight line. The length of the linearly extending portions 21a and 21a 'of the power transmission line 21 can be set to 10 m to 20 m, for example.
電動車両３の１個の車輪３ａの内部には、車輪３ａの回転軸のまわりを周回して巻かれた主コイル３１が収容されている。また、受電側コンデンサ３２が主コイル３１と直列に設けられている。また、主コイル３１に結合する副コイル３３が設けられている。こうして、主コイル３１と受電側コンデンサ３２が受電側共振器３０を構成している。 A main coil 31 wound around the rotation axis of the wheel 3a is accommodated in one wheel 3a of the electric vehicle 3. A power receiving side capacitor 32 is provided in series with the main coil 31. In addition, a sub-coil 33 coupled to the main coil 31 is provided. Thus, the main coil 31 and the power receiving side capacitor 32 constitute a power receiving side resonator 30.
また、電動車両３のもう１個の車輪３ａ’（上記車輪３ａの左右の片方）の内部には、車輪３ａ’の回転軸のまわりを周回して巻かれた主コイル３１’が収容されている。また、受電側コンデンサ３２’が主コイル３１’と直列に設けられている。また、主コイル３１’に結合する副コイル３３’が設けられている。こうして、主コイル３１’と受電側コンデンサ３２’が受電側共振器３０’を構成している。 Further, inside the other wheel 3a ′ (one of the left and right sides of the wheel 3a) of the electric vehicle 3 is housed a main coil 31 ′ wound around the rotation axis of the wheel 3a ′. Yes. A power receiving side capacitor 32 'is provided in series with the main coil 31'. Further, a sub-coil 33 'coupled to the main coil 31' is provided. Thus, the main coil 31 ′ and the power receiving side capacitor 32 ′ constitute a power receiving side resonator 30 ′.
車輪３ａ、３ａ’の中の主コイル３１、３１’は、電動車両３の左右の車輪３ａ、３ａ’が送電線路２１の直線延伸部分２１ａ、２１ａ’の直上あたりにあるとき（図１参照。）、直線延伸部分２１ａ、２１ａ’からの磁場をコイル３１、３１’のほぼ軸方向に受ける。また、車輪３ａ、３ａ’の中に主コイル３１、３１’を設けているのは、送電線路２１の単位長さあたりのインダクタンス成分は比較的小さくなり易いので、電動車両３の主コイル３１、３１’を送電線路２１の近くに有るようにして送電線２１から受ける磁界をできるだけ大きくするためである。なお、車輪３ａ、３ａ’の近傍であって車輪３ａ、３ａ’でない部分に主コイル３１、３１’を設けることも、場合によっては可能である。 The main coils 31, 31 'in the wheels 3a, 3a' are when the left and right wheels 3a, 3a 'of the electric vehicle 3 are directly above the linearly extending portions 21a, 21a' of the power transmission line 21 (see FIG. 1). ), And receives the magnetic field from the linearly-stretched portions 21a and 21a ′ substantially in the axial direction of the coils 31 and 31 ′. In addition, the main coils 31 and 31 'are provided in the wheels 3a and 3a' because the inductance component per unit length of the transmission line 21 tends to be relatively small. This is because the magnetic field received from the power transmission line 21 is made as large as possible so that 31 'is near the power transmission line 21. In some cases, the main coils 31 and 31 'may be provided near the wheels 3a and 3a' but not on the wheels 3a and 3a '.
また、受電側コンデンサ３２、３２’は、主コイル３１、３１’が有する寄生容量で代用して、特に設けないことが可能な場合も有る。その場合、主コイル３１、３１’のそれぞれの両端は開放状態とすることができる。 In some cases, the power receiving side capacitors 32 and 32 ′ can be replaced by the parasitic capacitance of the main coils 31 and 31 ′ and not particularly provided. In that case, both ends of the main coils 31, 31 'can be opened.
送電側共振器２０は、交流電源２３により励振される。電動車両３の左右の車輪３ａ、３ａ’が送電線路２１の直線延伸部分２１ａ、２１ａ’の直上あたりにあるとき、受電側共振器３０と送電側共振器２０は共振し、また、受電側共振器３０’と送電側共振器２０は共振する。それにより、送電装置２から電動車両３の受電側共振器３０、３０’に電力が伝送される。伝送された受電側共振器３０、３０’の電力は、電磁誘導により副コイル３３、３３’に送られ、そして、蓄電池が含まれる負荷３４に送られる。 The power transmission side resonator 20 is excited by the AC power source 23. When the left and right wheels 3a, 3a 'of the electric vehicle 3 are located immediately above the straight extension portions 21a, 21a' of the power transmission line 21, the power receiving side resonator 30 and the power transmitting side resonator 20 resonate, and the power receiving side resonance. Resonator 30 'and power transmission side resonator 20 resonate. Thereby, electric power is transmitted from the power transmission device 2 to the power receiving side resonators 30 and 30 ′ of the electric vehicle 3. The transmitted power of the power-receiving-side resonators 30 and 30 ′ is sent to the sub-coils 33 and 33 ′ by electromagnetic induction, and then sent to a load 34 including a storage battery.
このような電動車両給電システム１では、送電装置２の送電線路２１の直線延伸部分２１ａ、２１ａ’の直上あたりに左右の車輪３ａ、３ａ’が有るようにすると、電動車両３が停止していても、或いは走行していても、送電装置２から電動車両３に共振により電力を伝送できる。また、送電装置２の送電側共振器２０のインダクタンス成分は送電線路２１で形成しているので、送電装置２は大規模な設備とはならない。なお、この電動車両給電システム１を駐車スペースで使用する場合は、環状の送電線路２１を駐車スペースにおさめることも可能である。 In such an electric vehicle power feeding system 1, if the left and right wheels 3 a, 3 a ′ are located immediately above the straight extending portions 21 a, 21 a ′ of the power transmission line 21 of the power transmission device 2, the electric vehicle 3 is stopped. In addition, even when the vehicle is running, power can be transmitted from the power transmission device 2 to the electric vehicle 3 by resonance. Moreover, since the inductance component of the power transmission side resonator 20 of the power transmission device 2 is formed by the power transmission line 21, the power transmission device 2 is not a large-scale facility. In addition, when using this electric vehicle electric power feeding system 1 in a parking space, it is also possible to place the annular power transmission line 21 in the parking space.
また、送電装置２の送電線路２１は、直線延伸部分２１ａのみとし、直線延伸部分２１ａ’を設けないことも可能である。また、片方の車輪３ａ’の主コイル３１’、受電側コンデンサ３２’、副コイル３３’を省略することも可能である。これらの場合、車輪３ａの主コイル３１、受電側コンデンサ３２、副コイル３３のみを用いて電力の電送が行われることになる。また、主コイル３１’、受電側コンデンサ３２’、副コイル３３’が設けられる車輪３ａ’を、車輪３ａと同じ側の前後の残りの車輪とすることも可能である。また、電動車両３の車輪全部を同様の構成にして、伝送される電力を増大させることも可能である。 In addition, the power transmission line 21 of the power transmission device 2 may include only the linearly extending portion 21a and may not include the linearly extending portion 21a '. Further, it is possible to omit the main coil 31 ′, the power receiving side capacitor 32 ′, and the auxiliary coil 33 ′ of one wheel 3 a ′. In these cases, electric power is transmitted using only the main coil 31, the power receiving side capacitor 32, and the sub coil 33 of the wheel 3a. Further, the wheel 3a 'provided with the main coil 31', the power receiving side capacitor 32 ', and the auxiliary coil 33' can be the remaining wheels before and after the same side as the wheel 3a. It is also possible to increase the transmitted power by making all the wheels of the electric vehicle 3 have the same configuration.
次に、電動車両給電システム１の実験について述べる。図４及び図５に示すように、送電装置２の送電線路２１としての線径1ｍｍのワイヤを、長方形の約２０ｃｍの長辺と約８ｃｍの短辺を成すように敷設した。この２個の長辺が直線延伸部分２１ａ、２１ａ’となっている。車輪３ａ、３ａ’の主コイル３１、３１’は、線径1ｍｍのワイヤを直径約３ｃｍの円形に約２６回巻いて長さ（軸方向の長さ）Ｌを約２ｃｍとした。副コイル３３、３３’は、線径1ｍｍのワイヤを絶縁層を介して主コイル３１、３１’の周りに約１回巻いた。受電側コンデンサ３２、３２’は寄生容量で代用した。図４は、車輪３ａ、３ａ’が左右に有るようにした場合の実験構成を示す。図５は、車輪３ａ、３ａ’が送電線路２１の直線延伸部分２１ａ’の前後に有るようにした場合の実験構成を示す。 Next, an experiment of the electric vehicle power feeding system 1 will be described. As shown in FIG.4 and FIG.5, the wire with a wire diameter of 1 mm as the power transmission line 21 of the power transmission apparatus 2 was laid so that the long side of about 20 cm and the short side of about 8 cm may be comprised. These two long sides are linearly extended portions 21a and 21a '. The main coils 31, 31 ′ of the wheels 3 a, 3 a ′ were wound by winding a wire with a wire diameter of 1 mm in a circle with a diameter of about 3 cm about 26 times, and the length (length in the axial direction) L was about 2 cm. The auxiliary coils 33 and 33 ′ were formed by winding a wire having a diameter of 1 mm around the main coils 31 and 31 ′ with an insulating layer about once. The power receiving side capacitors 32 and 32 'are replaced with parasitic capacitances. FIG. 4 shows an experimental configuration when the wheels 3a, 3a 'are arranged on the left and right. FIG. 5 shows an experimental configuration in the case where the wheels 3 a and 3 a ′ are arranged before and after the straight extension portion 21 a ′ of the power transmission line 21.
図６に、実験結果の通過特性Ｓ２１を示す。曲線ａは車輪３ａ、３ａ’が左右に有るようにした場合、曲線ｂは車輪３ａのみしかない場合、曲線ｃは車輪３ａ、３ａ’が前後に有るようにした場合の最大の通過特性Ｓ２１の値を示している。図６の横軸は、図７に示すように、送電線路２１の直線延伸部分２１ａ（及び２１ａ’）の位置を主コイル３１、３１’の軸方向の中央位置からずらして行ったときのずれの大きさｄ（単位は、主コイル３１、３１’の軸方向の長さＬ）である。なお、ずれの大きさｄが０．５×Ｌよりも小さいと、送電線路２１の直上には主コイル３１、３１’が存在し、ずれの大きさｄが０．５×Ｌよりも大きいと、送電線路２１の直上から主コイル３１、３１’ははずれることになる。 Figure 6 shows the pass characteristic S 21 of the experimental results. The curve a is the maximum passing characteristic S 21 when the wheels 3a and 3a ′ are on the left and right, the curve b is only the wheel 3a, and the curve c is the maximum passage characteristic S 21 when the wheels 3a and 3a ′ are on the front and rear. The value of is shown. As shown in FIG. 7, the horizontal axis in FIG. 6 represents a shift when the position of the linearly extending portion 21a (and 21a ′) of the transmission line 21 is shifted from the axial center position of the main coils 31 and 31 ′. Is a size d (unit: length L in the axial direction of the main coils 31, 31 '). In addition, when the magnitude | size d of deviation is smaller than 0.5 * L, the main coils 31 and 31 'exist just above the power transmission line 21, and when magnitude | size d of deviation is larger than 0.5 * L. The main coils 31 and 31 ′ are disconnected from directly above the power transmission line 21.
曲線ａによると、通過特性Ｓ２１の値は約−３ｄＢになることができるので、送電装置２の送電線路２１から主コイル３１、３１’に電力が実用的に伝送可能であることが分かる。 According to the curve a, since the value of the pass characteristic S 21 may be approximately -3 dB, it can be seen power from the power transmission line 21 of the power transmission apparatus 2 to the main coils 31 and 31 'can be transmitted practically.
以上、本発明の実施形態に係る無線電力伝送装置について説明したが、本発明は、上述の実施形態に記載したものに限られることなく、特許請求の範囲に記載した事項の範囲内でのさまざまな設計変更が可能である。 The wireless power transmission device according to the embodiment of the present invention has been described above. However, the present invention is not limited to that described in the above-described embodiment, and various modifications within the scope of the matters described in the claims. Design changes are possible.
１ 電動車両給電システム
２ 送電装置
２１ 送電装置２を構成する送電線路
２１ａ、２１ａ’ 送電線路２１の直線延伸部分
２２ 送電装置２を構成する送電側コンデンサ
２３ 送電装置２を構成する交流電源
３ 電動車両
３ａ、３ａ’ 電動車両３の車輪
３１、３１’ 電動車両３を構成する主コイル
３２、３２’ 電動車両３を構成する受電側コンデンサ
３３、３３’ 電動車両３を構成する副コイル
DESCRIPTION OF SYMBOLS 1 Electric vehicle feeding system 2 Electric power transmission apparatus 21 Electric power transmission line 21a, 21a 'which comprises the electric power transmission apparatus 2 Linear extension part 22 of the electric power transmission line 21 Electric power transmission side capacitor | condenser which comprises the electric power transmission apparatus 23 AC power source which comprises the electric power transmission apparatus 3 Electric vehicle 3 a, 3 a ′ Wheels 31 of the electric vehicle 3, 31 ′ Main coil constituting the electric vehicle 3, 32 ′ Power receiving side capacitor 33, 33 ′ constituting the electric vehicle 3 Sub coil constituting the electric vehicle 3
Claims (3)
前記送電装置は、環状に形成されており地面表面に沿って直線状に延伸する直線延伸部分を少なくとも１つ有する送電線路と、該送電線路と直列に設けられた送電側コンデンサと、前記送電線路に電力を送出する交流電源と、を備えて前記送電線路と前記送電側コンデンサが送電側共振器を構成しており、
前記電動車両は、車輪の内部に収容されその回転軸のまわりを周回して巻かれており、前記直線延伸部分の直上近傍にあるときに前記送電側共振器から共振により電力が伝送される受電側共振器を構成する主コイルと、該主コイルに電磁誘導により結合する副コイルと、を備えて前記送電側共振器から前記受電側共振器に共振により伝送された電力を前記副コイルから蓄電池が含まれる負荷に送ることを特徴とする電動車両給電システム。 An electric vehicle power feeding system capable of wirelessly transmitting electric power from a power transmission device on the ground side to an electric vehicle,
The power transmission device is formed in an annular shape and has a power transmission line having at least one linearly extending portion that extends linearly along the ground surface, a power transmission side capacitor provided in series with the power transmission line, and the power transmission line An AC power source that sends power to the power transmission line and the power transmission side capacitor constitute a power transmission side resonator,
The electric vehicle is housed in a wheel, wound around its rotating shaft, and receives electric power transmitted by resonance from the power transmission side resonator when it is in the vicinity immediately above the linearly extending portion. A main coil constituting the side resonator, and a subcoil coupled to the main coil by electromagnetic induction, and the electric power transmitted by resonance from the power transmission side resonator to the power reception side resonator from the subcoil to the storage battery The electric vehicle electric power feeding system characterized by sending to the load containing.
前記主コイルと直列に受電側コンデンサが設けられており、前記主コイルと該受電側コンデンサが前記受電側共振器を構成していることを特徴とする電動車両給電システム。 In the electric vehicle electric power feeding system according to claim 1,
An electric vehicle power feeding system, wherein a power receiving side capacitor is provided in series with the main coil, and the main coil and the power receiving side capacitor constitute the power receiving side resonator.
前記送電装置の送電線路は、前記直線延伸部分を２つ有していることを特徴とする電動車両給電システム。 In the electric vehicle electric power feeding system according to claim 1 or 2,
The power transmission line of the power transmission device includes the two linearly extending portions, and the electric vehicle power feeding system.
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| JPWO2017195581A1 (en) * | 2016-05-09 | 2018-05-24 | 有限会社アール・シー・エス | Power feeding device, power receiving device, and non-contact power feeding system |
| KR101974714B1 (en) * | 2017-04-24 | 2019-05-02 | 경성대학교 산학협력단 | Resonant magnetic induction charging system using wheel-type SRM for electric vehicle drive |
| JP7365804B2 (en) * | 2019-07-25 | 2023-10-20 | 株式会社ブリヂストン | Wireless power receiving system, tire/wheel assembly, and tire |
| JP7219185B2 (en) * | 2019-07-25 | 2023-02-07 | 株式会社ブリヂストン | Tire/Wheel Assembly, Tire, and Wireless Power Receiving System |
| JP7388629B2 (en) * | 2019-07-25 | 2023-11-29 | 国立大学法人 東京大学 | Wireless power receiving system, mobile object, and wheels |
| JP7462896B2 (en) * | 2019-10-09 | 2024-04-08 | 国立大学法人 東京大学 | Wireless power receiving system, mobile body, and wheel |
| JP7394377B2 (en) * | 2019-10-09 | 2023-12-08 | 国立大学法人 東京大学 | Wireless power supply system, power transmission device, and power receiving device |
| JP7398699B2 (en) | 2019-10-09 | 2023-12-15 | 国立大学法人 東京大学 | Wireless power receiving system, mobile object, and wheels |
| JP7373791B2 (en) * | 2019-10-09 | 2023-11-06 | 国立大学法人 東京大学 | Wireless power receiving system, mobile object, and wheels |
| JP7454193B2 (en) | 2020-12-24 | 2024-03-22 | 株式会社デンソー | Power receiving device |
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