RU2505427C2 - Contactless method of powering electric vehicles - Google Patents

Contactless method of powering electric vehicles Download PDF

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Publication number
RU2505427C2
RU2505427C2 RU2011153587/11A RU2011153587A RU2505427C2 RU 2505427 C2 RU2505427 C2 RU 2505427C2 RU 2011153587/11 A RU2011153587/11 A RU 2011153587/11A RU 2011153587 A RU2011153587 A RU 2011153587A RU 2505427 C2 RU2505427 C2 RU 2505427C2
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RU
Russia
Prior art keywords
electric
winding
electric vehicle
energy
transmitting
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RU2011153587/11A
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Russian (ru)
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RU2011153587A (en
Inventor
Дмитрий Семенович Стребков
Алексей Иосифович Некрасов
Владимир Захарович Трубников
Владимир Александрович Королев
Original Assignee
Российская академия сельскохозяйственных наук Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии)
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Priority to RU2011153587/11A priority Critical patent/RU2505427C2/en
Publication of RU2011153587A publication Critical patent/RU2011153587A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

Abstract

FIELD: electricity.
SUBSTANCE: mains electric power is converted by frequency and voltage stepping up; current and voltage resonance is generated in the transmitting supply system at the natural resonance frequency of the electric circuit of the vehicle. Electric power is transmitted in resonance mode through an insulated high-frequency feeder to a transmitting coil (9), situated in the road surface and made in form of a flat rectangular single-layer coil of insulated wire. First and second receiving coils (14) and (21) are mounted on the electric vehicle and are in form of helical coils arranged around two rubber wheels. A third rectangular receiving coil (24) is attached to the bottom of the body of the vehicle and placed parallel to the road surface. Electromagnetic energy from the receiving coils is transmitted through a rectifier to an electric energy storage in which electric energy is converted to dc or ac energy and transmitted to a power supply and control unit (29) for the electric vehicle for powering drive motors (30). Traction motors are mounted directly in wheels in form of motorised wheels or on the chassis of the electric vehicle.
EFFECT: high reliability and electric safety and high efficiency.
1 dwg

Description

The invention relates to electric transport and can be used for contactless power supply of electric vehicles, trolleybuses, trams, electric forklifts, electric tractors, electric vehicle feeders and other electric vehicles.

A known method of powering a rail electric vehicle, providing for the supply of electric energy through a single-wire contact network through a current collector to a vehicle, converting electric power to the network and supplying it to traction motors (USSR AS No. 1729843, MKI B60L 9/08, BI No. 16 , 1992).

The disadvantage of this method of powering an electric vehicle is the large metal consumption of the device for implementing the method comprising a contact network and rails. Another disadvantage is the inability to use this method for powering non-rail vehicles, for example, electric vehicles.

There is a known method of powering electric vehicles, providing for the supply of electricity from a high-voltage high-frequency converter and a single-wire network to the current collector of the vehicle through the air gap between the transmitting insulated single-wire line located in the road surface and the current collector installed under the bottom of the electric vehicle.

The voltage at the current collector is reduced, converted to direct current voltage, accumulated electrical energy and converted into mechanical energy of moving the vehicle (RF patent No. 2292928, IPC B60L 9/10, BI 12, 2007).

The disadvantage of this method is the low efficiency of transmission of electromagnetic energy due to the small area of a single energy-transmitting cable, large losses of high-frequency energy due to the radiation associated with the need to create an electromagnetic field of high tension, low reliability of power supply of an electric vehicle.

The objective of the invention is the creation of a non-contact method of powering electric vehicles with high efficiency of electric energy transmission, increasing the reliability of power supply, reducing the loss of electromagnetic energy in radiation during transmission, increasing the electromagnetic safety of the power system of an electric vehicle.

The technical result is achieved by the fact that the energy of the electric network is converted by increasing the frequency and voltage, creating a resonance of current and voltage fluctuations in the transmitting power system at the natural resonant frequency of the electric circuit of the electric vehicle, while the electric energy is supplied in resonant mode through an isolated high-frequency feeder to the transmitting a winding located in the road surface and made in the form of a flat rectangular single-layer winding from an insulated wire, with When each winding is wound around the diameter of the wire, the longitudinal rectangular turns of the transmitting winding are placed in the direction of movement of the electric vehicle, and an alternating electromagnetic field is created in both parts of the transmitting winding by unidirectionally passing alternating electric current of increased frequency in them, and mainly in places of the proposed location of the wheels of an electric vehicle with volume windings and direct perpendicular to the direction of movement of the electric vehicle upward from the transmitting winding, while the short transverse turns of the transmitting winding are buried and placed in the electrical insulation layer below the longitudinal ones, and the first and second receiving windings are placed on the electric vehicle and are made in the form of spiral coils placed around the circumference two rubber wheels of an electric vehicle moving on the roadway or being on it without movement, take the first and the second receiving windings during movement or while the electric vehicle is stopped, the electromagnetic energy that is supplied through rectifiers to the electric energy storage device, while the third rectangular receiving winding made of an insulated wire placed and fixed on an electrically insulated plate is placed on the electric vehicle as well attached to the underbody of the vehicle and parallel to the roadbed with an air gap over both parts of the transmitting windings, receive the third rectangular receiving winding during the movement or parking of the electric vehicle electromagnetic energy, which is fed through the rectifier to the electric energy storage device, in which the electric energy received from the first, second and third receiving windings is converted into electric energy of direct or alternating current and supplied to power power supply and control unit for an electric vehicle, for powering drive electric motors and other electric devices of an electric vehicle At the same time, traction electric motors are located directly in the wheels in the form of a motor wheel, next to the receiving windings, or on the chassis of an electric vehicle, they provide kinematic connection of the traction electric motor with drive wheels, while the transmitting winding is placed in the road surface with sections convenient for its installation and connections to the feeder and power source, as well as for counter-parallel movement of electric vehicles, while receiving windings installed on the transport In addition, they are spatially located in the zone of the vector of the flux density of the electromagnetic energy of the transmitting winding, the turns of the first and second spiral receiving windings are made and arranged on wheels parallel to the direction of movement of the electric vehicle, the plane of the transmitting winding and the ground plane, and the turns of the third rectangular receiving winding are made and arranged perpendicular to the direction the movement of the electric vehicle and the plane of the transmitting winding, while the electric vehicle in the process zheniya directed along the vector electromagnetic energy flux density of the transmitting coil, providing the maximum transmission coefficient of the electromagnetic energy, and transmit coil placed in the electrically insulating protective layer being located in the road surface.

The essence of the proposed method is illustrated in the drawing, which shows a general diagram of a device that implements the claimed method of contactless power supply of electric vehicles.

The device comprises an electric energy source 1, a voltage and frequency adjustable converter 2 connected through a resonant capacitor 3 to a low voltage winding 4 of a high frequency resonant transformer 5, the high voltage winding 6 of which is connected by a high potential output to a high voltage line 7, through which electric energy is transferred from the source to to the consumer, and the low-voltage output high-voltage winding 6 is connected to the ground 8.

The high-voltage power line 7 is connected to a transmitting winding 9 located in the electrical insulating layer 10 installed in the road surface 11, and the other terminal of the transmitting winding 9 is connected to the ground 12, while a resonant capacitor 13 is connected parallel to the transmitting winding 13. The first receiving spiral winding 14, installed in the wheel 15 through the resonant capacitor 16 and the rectifier 17, is connected to the drive 18, to which through the second rectifier 19 and the resonant capacitor 20 is connected a second receiving spiral winding 21, p located in the wheel 22. The third receiving rectangular winding 23, mounted on an insulated plate 24 and mounted on the underbody 25 of the vehicle body 26, is also connected to the energy storage device 18 through the resonant capacitor 27 and the rectifier 28, which is connected to the power storage and control unit 29 of the electric vehicle connected to the electric drive 30 of the electric vehicle 26.

The method is implemented in the following way.

The electrical energy of the supply network 1 is converted in frequency, voltage and voltage by the converter 2 and supplied to the resonant circuit formed by the capacitor 3 and the inductance of the low-voltage winding 4 of the high-frequency resonant transformer 5 to excite resonant oscillations in its low-voltage energy pump circuit. The high-potential output of the high-voltage winding 6 of the high-frequency resonant transformer 5 through the high-voltage power line 7 is connected to the beginning of the transmitting winding 9, which is located in the electrical insulation layer 10 of the pavement 11, and the second end of the transmitting winding 9 is connected to the ground 12.

The vector of the flux density of electromagnetic energy generated by the transmitting winding 9 is directed perpendicular upward from the road surface 11, is isolated and received by the first resonant circuit formed by the inductance of the winding 14 located in the wheel 15, and the capacitance of the capacitor 16, while the resulting AC voltage is rectified by a rectifier 17 and served in the drive 18.

Similarly, the electromagnetic field energy transmitted by the winding 9 and directed perpendicularly upward from the road surface 11 is isolated and received by a second resonant circuit formed by the inductance of the winding 21 located in the wheel 22 and the capacitance of the capacitor 20, while the resulting AC voltage is rectified by a rectifier 19 and also served in the drive 18.

The electromagnetic field energy transmitted by the winding 9 and directed perpendicularly upward from the road surface 11 is isolated and received by the third resonant circuit formed by the inductance of the rectangular winding 23 located on the electrically insulated plate 24 and fixed at the bottom 25 of the electric vehicle 26, and the capacitor 27, with this, the resulting voltage is rectified by a rectifier 28 and also served in the energy storage 18. Energy storage 18 through the power unit 29 of the power and control of electric transport means connected to the electric drive 30 connected to the wheels 15 and 22, carrying out the movement of electric vehicles 26.

The transmitting winding 9, laid in the insulating layer 10, is placed in the pavement 11 in sections convenient for installation during the construction of the road, while the winding 9 is made in turns of the same length and placed in the same horizontal plane with an offset, when laying in rows, by the value of the diameter of the winding wire with insulation. The direction of the electric current in all conductors of the transmitting winding 9 under the wheels 15 and 22 with the receiving windings 14 and 21 are directed in one direction, which is indicated by crosses or dots in the drawing.

The electromagnetic energy received by the receiving windings 14, 21 and 23 from the transmitting winding 9 during the movement or rest of the electric vehicle is emitted in the receiving resonant circuits, rectified, stored in the common drive 18, converted into electrical energy of the required format and through the power and control unit 29 served on a drive motor 30 of an electric vehicle, with one; a common traction electric motor is located on the chassis of the electric vehicle and is connected to the drive wheels by means of a transmission, or traction electric motors of the required power are located directly in the wheels of the electric vehicle in the form of a motor wheel, with a common power supply and control unit.

The transmitting windings are arranged in the pavement in sections convenient for mounting and connecting to the feeder and power source, as well as for counter-parallel movement of electric vehicles, while the turns of the winding are parallel to the direction of movement of the electric vehicle, while the short transverse turns of the transmitting winding are deepened and placed in an insulating layer below the longitudinal.

In sections of the road surface, each section of the transmission windings is connected via a high-voltage power line, a high-frequency resonant transformer to a frequency converter with a power source. Sectional mounting and switching of the transmitting windings also increases the operational reliability of the electric vehicle.

Switching of the receiving windings and power supply of electrical equipment with electric energy when the electric vehicle moves from section to pavement with transmitting windings occurs when it appears in the energy service area of this section of the road, while the energy switching method is based on a special frequency setting of the transmitting and receiving resonant circuits.

The proposed non-contact method of powering electric vehicles when laying the transmitting winding in the insulating layer of the road surface with protection against possible mechanical damage does not require the construction of contact networks, heavy receiving cable reels or cable channels, has high reliability, low energy losses during its transmission and high transmission efficiency for through the use of three receiving windings, and also improves electrical and electromagnetic safety.

Claims (1)

  1. A non-contact way of powering electric vehicles, including supplying electric energy from a high-frequency current source to a transmission system located in the road surface and receiving it with electric equipment of an electric vehicle, characterized in that the energy of the electric network is converted by increasing frequency and voltage, creating a resonance of current oscillations and voltage in the transmitting power system at the natural resonant frequency of the electric circuit of the electric vehicle, while The electrical energy is supplied in resonance mode through an isolated high-frequency feeder to a transmitting winding located in the road surface and made in the form of a flat rectangular single-layer winding from an insulated wire, with an offset at the winding of each coil by the wire diameter, longitudinal rectangular turns of the transmitting winding are placed in the direction of electric transport means, create in both parts of the transmitting winding by unidirectional transmission of alternating electric current of increased h the alternating electromagnetic field, and the vector of the electromagnetic energy density of the alternating electromagnetic field is oriented mainly at the locations of the proposed wheels of the electric vehicle with the receiving windings and is directed perpendicular to the direction of movement of the electric vehicle up from the transmitting winding, while the short transverse turns of the transmitting winding are deepened and placed in an insulating layer lower than the longitudinal, and the first is located on the electric transport medium TWE, and they are made in the form of spiral coils placed around the circumference of two rubber wheels of an electric vehicle moving along the roadway or without moving on it, receive electromagnetic energy from the first and second receiving windings during movement or when the electric vehicle stops through rectifiers into an electric energy storage device, while a third rectangular receiving winding made of insulated is also placed on the electric vehicle of the first wire, placed and fixed on an electrically insulated plate, which is attached to the underbody of the vehicle and parallel to the roadway with an air gap over both parts of the transmitting winding, receive the third rectangular receiving winding during movement or parking of the electric vehicle electromagnetic energy, which is fed through the rectifier into an electric energy storage device, in which the electricity received from the first, second and third receiving windings is converted into electricity energy of direct or alternating current and is supplied to the power supply and control unit of an electric vehicle to power drive electric motors and other electric devices of an electric vehicle, while the traction electric motors are located directly in the wheels in the form of a motor wheel, next to the receiving windings or on the chassis of the electric vehicle, provide kinematic connection of the traction motor with drive wheels, while the transmitting winding is arranged in sections of the road surface, convenient for its installation and connection to the feeder and power source, as well as for counter-parallel movement of electric vehicles, while the receiving windings installed on the vehicle are spatially located in the zone of the vector of the flux density of the electromagnetic energy of the transmitting winding, the turns of the first and second spiral receiving windings are made and arranged on wheels parallel to the direction of movement of the electric vehicle, the plane of the transmitting winding and the plane of the earth, and the turns of the tre a rectangular receiving winding is made and arranged perpendicular to the direction of movement of the electric vehicle and the plane of the transmitting winding, while the electric vehicle in the process of movement is directed along the flux density vector of the electromagnetic energy of the transmitting winding, which provides the maximum transmission coefficient of electromagnetic energy, and the transmitting winding is laid in an electrical insulating protective layer, located in the road surface.
RU2011153587/11A 2011-12-28 2011-12-28 Contactless method of powering electric vehicles RU2505427C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
RU2011153587/11A RU2505427C2 (en) 2011-12-28 2011-12-28 Contactless method of powering electric vehicles

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RU2505427C2 true RU2505427C2 (en) 2014-01-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2699024C1 (en) * 2018-04-16 2019-09-03 Фолкуер Холдингс Лимитед Method and device for wireless charging of electric energy storage unit of fixed or mobile electric consumer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU542666A1 (en) * 1974-06-07 1977-01-15 Device for transmitting electricity to the transport crew
DE4236340A1 (en) * 1992-10-28 1994-05-05 Daimler Benz Ag Arrangement for individual contactless energy transfer to moving consumers
US5855261A (en) * 1994-12-26 1999-01-05 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Non-contact electric power supplying system for vehicle
RU2297928C1 (en) * 2005-10-13 2007-04-27 Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства (ГНУ ВИЭСХ) Method of and device to supply electric vehicles
RU2408476C2 (en) * 2009-01-20 2011-01-10 Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии) Method of wireless electric power transmission and device to this end (versions)

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU542666A1 (en) * 1974-06-07 1977-01-15 Device for transmitting electricity to the transport crew
DE4236340A1 (en) * 1992-10-28 1994-05-05 Daimler Benz Ag Arrangement for individual contactless energy transfer to moving consumers
US5855261A (en) * 1994-12-26 1999-01-05 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Non-contact electric power supplying system for vehicle
RU2297928C1 (en) * 2005-10-13 2007-04-27 Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства (ГНУ ВИЭСХ) Method of and device to supply electric vehicles
RU2408476C2 (en) * 2009-01-20 2011-01-10 Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии) Method of wireless electric power transmission and device to this end (versions)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2699024C1 (en) * 2018-04-16 2019-09-03 Фолкуер Холдингс Лимитед Method and device for wireless charging of electric energy storage unit of fixed or mobile electric consumer
EP3557720A1 (en) 2018-04-16 2019-10-23 Folquer Holdings Limited Method and device for wireless charging of electrical energy storage in a fixed or mobile consumer

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20131229