CN104816646B - A kind of radio energy transmission system for moving static Campatible electric automobile - Google Patents
A kind of radio energy transmission system for moving static Campatible electric automobile Download PDFInfo
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- CN104816646B CN104816646B CN201510155956.3A CN201510155956A CN104816646B CN 104816646 B CN104816646 B CN 104816646B CN 201510155956 A CN201510155956 A CN 201510155956A CN 104816646 B CN104816646 B CN 104816646B
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses a kind of radio energy transmission system for moving static Campatible electric automobile, two electrified metal tracks including being layed in underground, the metal wheel hub of electric automobile both sides is insulated by being arranged on the insulated connecting piece at axletree two ends, and metal wheel hub forms electric capacity by tire with metal track；The brush for drawing electric energy is provided with metal wheel hub；Brush on the metal wheel hub of electric automobile homonymy is connected on the same input of charging network.Present invention can be implemented in, through automobile tire, base Wireless power transmission, and realizing quickly and efficiently wireless charging in the way of resonance in movement；Simultaneously, it is to avoid the coil of heaviness is installed in the car, it is small to space needed for car transformation.The underdeveloped area of charging network can be particularly used for using wireless charging electric automobile of the invention, it is to avoid conventional electric automobile is heavy and the battery of costliness, and less energy loss is there is during discharge and recharge.
Description
Technical field
The invention belongs to wireless power transmission field, be related to a kind of electric automobile, and in particular to one kind for moving-it is static
The radio energy transmission system of Campatible electric automobile.
Background technology
Charging technique is always to limit the Main Bottleneck that pure electric vehicle industry is developed rapidly, dynamic then five or six chargings of hour
Time allows ordinary consumer to hang back, and especially in the underdeveloped area of charging network, user has serious " mileage anxiety ", i.e.,
Making the super charging pile of Tesla can not be fully solved problem.In addition batteries of electric automobile is generally heavy and expensive, and in charge and discharge
More energy loss is there is during electricity.
Electric automobile wireless charging adopts the mode generally to coil electromagnetism sensing, but due to the magnetic field radiation of coil generation
Substantial amounts of energy loss is had during to secondary coil, and occupies larger component in car body due to coil, considerably increased electronic
The weight of automobile.Conventional mode is very high to parameter requests such as structure, the positions of coil, and the coil for matching must be in a certain
Fixed relative position, this causes this mode not to be suitable for electric automobile to charge under steam, and must static charging.A variety of originals
Because causing conventional electric automobile wireless charging to be difficult to promote.
The content of the invention
Present invention aim at solving the problems, such as that existing wireless charging technology brings, there is provided one kind for moving-it is static and
The radio energy transmission system of appearance formula electric automobile, the radio energy transmission system can improve energy transmission efficiency and realize vapour
Car travels wireless charging.
It is a kind of for moving-radio energy transmission system of static Campatible electric automobile, including electric automobile metal
Wheel hub, the charging network being layed in two metal tracks of underground and electric automobile；Two metal tracks and external communication
Power supply is connected, and inductance is connected on metal track, and the electric capacity for being formed between two metal guide rails realizes LC resonance；
The metal wheel hub of electric automobile both sides is insulated by being arranged on the insulated connecting piece at axletree two ends, and metal wheel hub is by tire and gold
Category track forms electric capacity；The brush for drawing electric energy is provided with metal wheel hub, brush is in close contact with metal wheel hub；It is electronic
Brush on the metal wheel hub of automobile homonymy is connected on the same input of charging network；The metal wheel of electric automobile homonymy
Two electric capacity that hub is formed with metal guide rail are in parallel.
The two bottom sides of the Rechargeable vehicle are additionally provided with sole plate metal, and electric capacity is formed between sole plate metal and metal guide rail
The electric capacity formed between metal wheel hub and metal guide rail is in parallel.
The charging network includes rectifier bridge and battery, the input difference connecting electric automobile both sides gold of rectifier bridge
Brush on category wheel hub, the output end of rectifier bridge is connected to the two ends of battery.
Compared with prior art, the invention has the advantages that：
The present invention charged by the way of through tire, base, it is possible to achieve electric automobile in movement quickly and efficiently without
Line charges, and present invention utilizes the electric capacity formed between electric automobile tire inner surface and guide rail, the repacking to electric automobile is difficult
Degree is smaller, make use of the electric capacity of automobile this body structure formation, is charged a battery by only need in the car increasing fairing.It is right
The properity influence of automobile is little, reduces the difficulty of this Technique Popularizing.The present invention is not only suitable for static charging and is also suitable
Charged in traveling, and power transmission efficiency is identical, it is ensured that the stability of power output.
Brief description of the drawings
Fig. 1 is model emulation schematic diagram of the invention；
Fig. 2 is circuit theory diagrams of the invention；
Fig. 3 is the simulation result figure of charging voltage of the present invention；
Fig. 4 is the simulation result figure of input impedance of the present invention.
Wherein, 1 is metal wheel hub；2 is metal guide rail；3 is sole plate metal；4 is insulated connecting piece；5 is tire.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Referring to Fig. 1, the present invention is by AC power, the electronic vapour being embedded in after the metal track of underground, additional circuit, repacking
Car, rectifier bridge and battery are constituted.Concrete structure includes the metal wheel hub 1 of electric automobile, is layed in two metal rails of underground
Charging network in road 2 and electric automobile；Two metal track 2 is connected with external ac power source, and on metal track 2
Connection inductance L, the electric capacity for being formed between two metal guide rails 2 realizes LC resonance；The metal wheel hub 1 of electric automobile both sides
Insulated by the insulated connecting piece 4 for being arranged on axletree two ends, metal wheel hub 1 forms electric capacity by tire 5 with metal track 2；Gold
The brush for drawing electric energy is provided with category wheel hub 1, brush is in close contact with metal wheel hub 1；Electric network include rectifier bridge with
And battery, the brush on the input difference connecting electric automobile both sides metal wheel hub of rectifier bridge, the output end company of rectifier bridge
It is connected to the two ends of battery.Brush on the metal wheel hub of electric automobile homonymy is connected to the same input of charging network
On；Two electric capacity that the metal wheel hub of electric automobile homonymy is formed with metal guide rail are in parallel.The two bottom sides of Rechargeable vehicle are also
Sole plate metal 3 is provided with, shape between electric capacity and metal wheel hub 1 and metal guide rail 1 is formed between sole plate metal 3 and metal guide rail 1
Into electric capacity be in parallel.There is electric capacity between bottom of car sole plate metal 3, between coaxial metal wheel hub 1.
Wireless power transmission technology of the present invention based on field coupling, the schematic diagram applied on electric automobile field is as schemed
Shown in 2, realized by following principle：
1) by the repacking to electric automobile, six four formed between electric capacity, including metal wheel hub and track are formd
Two electric capacity that individual electric capacity, the sole plate metal of bottom of car are formed with corresponding guide rail respectively.Make three electric capacity of automobile the same side
Parallel connection, track left and right sides constitutes an equivalent capacity C with vehicle right and left side respectively0；
2) it is embedded in formation electric capacity C between the metal track of underground1, metal guide rail and electric automobile can integrally be equivalent to one
Electric capacity two-port network；
3) there is electric capacity between bottom of car sole plate metal, between coaxial wheel hub, it is in parallel with rectifier bridge input, in circuit
In be equivalent to C2。
4) battery is equivalent to an electric capacity C3, it is changed into direct current because alternating current is rectified, it is followed by electric capacity and can be considered
Open circuit, influence of the charging network to front network is not considered.Battery equivalent capacity is connected on the defeated of above-mentioned electric capacity two-port network
Go out end, Two-port netwerk input can be equivalent to total capacitance C.
5) additional circuit is accessed between power supply and metal track makes the power of output end maximum.Assuming that power supply is
Voltage source, seen from power supply into input impedance it is minimum when, input power is maximum.Due to being passive element in equivalent circuit,
It is believed that power output is approximately equal to input power after loss is ignored, therefore impedance most one hour rated output is maximum；
6) additional circuit is inductance L, when parameter meets ω2During LC=1, series resonance state is reached, input resistance is minimum.
To the refiting scheme of electric automobile, following steps are specifically included：
1) dielectric is added between automotive hub and axletree, the electrical communication between two wheel hubs of vehicle right and left is blocked,
Electric automobile tire part forms four independent electric capacity；
2) brush of in-car is mounted at each metal wheel hub, and wheel hub is in close contact with brush, by electricity
The electric current that appearance passes to wheel hub can be drawn by brush；
3) two pieces of separate sole plate metals are installed on generation automotive underbody, installation form installs shape with ground end metal track
Formula is identical, forms electric capacity with corresponding track respectively；
4) automobile has formed six electric capacity.The front and back wheel correspondence brush, the sole plate metal of bottom of automobile the same side will be located at
It is connected by wire, three electric capacity parallel connections of the same side, and extraction wire is powered to the load.The left and right sides is in this way, constitute
Two groups of electric capacity；
5) wire that the left and right sides is drawn is connected to the input of rectifier bridge, and alternating current is converted to direct current by rectifier bridge,
Export to storage battery power supply.
Movement-static Campatible electric automobile of the present invention based on wireless power transmission, is not limited to wireless charging normal
The magnetic coupling thinking of rule, but take new mode to realize wireless charging, realize the shifting that normal charge mode is difficult to
Wireless charging in dynamic.The charging modes may be implemented in moving through automobile tire, base Wireless power transmission, and with the side of resonance
Formula realizes quickly and efficiently wireless charging；This can apply on highway and common road through rail wireless charging technology,
The long charging stand-by period can be avoided；Simultaneously, it is to avoid the coil of heaviness is installed in the car, it is small to space needed for car transformation.
The underdeveloped area of charging network can be particularly used for using wireless charging electric automobile of the invention, it is to avoid conventional electric automobile
The heavy and battery of costliness, and less energy loss is there is during discharge and recharge.Because conventional mode is to coil
The parameter requests such as structure, position are very high, and the coil for matching must be in the relative position of a certain fixation, and this causes this mode not
Charged under steam suitable for electric automobile, and must static charging.And this uses the electric automobile of novel radio charging technique
Automobile can be then effectively realized to charge under steam.
The present invention measures improved six electric capacity of interorbital electric capacity, electric automobile using electric impedance analyzer, by battery
Parameter calculate the equivalent capacitance value of battery, can obtain the partial parameters of Fig. 2.According to the producible signal frequency model of power supply
Enclose, reasonable selection inductance parameters make to meet ω2LC=1.Power supply is connected into metal track two ends to power, in measurement certain hour
The variable quantity of battery tension.Charge efficiency is weighed with the electricity charged a battery in the unit interval.
Charge model parameter according to building carries out circuit simulation, wherein L=527uH, C0=19.0pF, C1=9pF, C2
=10pF.As shown in Figure 3 and Figure 4, when supply frequency is 1.88Mhz, rectifier bridge front end input voltage reaches peak to simulation result
Value, input impedance reaches minimum value.Show that the resonant frequency of system is 1.86Mhz by theoretical calculation, the two more coincide.Explanation
Charging effect is best really when LC resonance is reached for system.
Above content is only explanation technological thought of the invention, it is impossible to limit protection scope of the present invention with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within claims of the present invention
Protection domain within.
Claims (1)
1. it is a kind of for moving-radio energy transmission system of static Campatible electric automobile, it is characterised in that：Including electronic vapour
The metal wheel hub (1) of car, the charging network being layed in two metal tracks (2) of underground and electric automobile；Two metals
Track (2) is connected with external ac power source, and on metal track (2) connect inductance (L), for two metal guide rails
(2) electric capacity formed between realizes LC resonance；The metal wheel hub (1) of electric automobile both sides is by being arranged on the insulation at axletree two ends
Connector (4) insulate, and metal wheel hub (1) forms electric capacity by tire (5) and metal track (2)；Metal wheel hub is provided with (1)
Brush for drawing electric energy, brush is in close contact with metal wheel hub (1)；Brush on the metal wheel hub of electric automobile homonymy connects
It is connected on the same input of charging network；Two electric capacity phases that the metal wheel hub of electric automobile homonymy is formed with metal guide rail
It is in parallel；Charging network includes rectifier bridge and battery, the input difference connecting electric automobile both sides metal wheel hub of rectifier bridge
On brush, the output end of rectifier bridge is connected to the two ends of battery；
The two bottom sides of Rechargeable vehicle are additionally provided with sole plate metal (3), and electricity is formed between sole plate metal (3) and metal guide rail (1)
Hold the electric capacity formed and metal wheel hub (1) and metal guide rail (1) between to be in parallel；Between bottom of car sole plate metal (3), coaxially
There is electric capacity between (1) in metal wheel hub；
Electric automobile has six four electric capacity formed between equivalent capacity, including metal wheel hub and track, bottom of car
Two electric capacity that sole plate metal is formed with corresponding guide rail respectively；Make three electric capacity parallel connections of electric automobile the same side, track or so
Side constitutes an equivalent capacity C with vehicle right and left side respectively0；It is embedded in formation electric capacity C between the metal track of underground1, metal guide rail
An electric capacity two-port network can be integrally equivalent to electric automobile；Deposited between bottom of car sole plate metal, between coaxial wheel hub
It is in parallel with rectifier bridge input in electric capacity, C is equivalent in circuit2；Battery is equivalent to an electric capacity C3, due to alternating current
It is rectified to be changed into direct current, it is followed by electric capacity and can be considered open circuit；Battery equivalent capacity is connected on the defeated of above-mentioned electric capacity two-port network
Go out end, Two-port netwerk input is equivalent to total capacitance C；
Additional circuit is inductance (L), when parameter meets ω2During LC=1, series resonance state is reached, input resistance is minimum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510155956.3A CN104816646B (en) | 2015-04-02 | 2015-04-02 | A kind of radio energy transmission system for moving static Campatible electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510155956.3A CN104816646B (en) | 2015-04-02 | 2015-04-02 | A kind of radio energy transmission system for moving static Campatible electric automobile |
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| CN104816646A CN104816646A (en) | 2015-08-05 |
| CN104816646B true CN104816646B (en) | 2017-06-06 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896694A (en) * | 2016-05-25 | 2016-08-24 | 上海众联能创新能源科技股份有限公司 | Capacitor type wireless charging system capable of receiving electric energy through tyres |
| CN109606147A (en) * | 2019-01-25 | 2019-04-12 | 重庆交通职业学院 | Wireless charging system in a kind of electric automobile during traveling |
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| DE102004028595A1 (en) * | 2004-06-12 | 2005-12-29 | Daimlerchrysler Ag | Energy/data transmission device for non-contact transmission of energy/data between fixed and moving components has primary and secondary windings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649171A (en) * | 2011-07-26 | 2019-04-19 | 睿能创意公司 | For subscribing device, the method and article of electrical energy storage at the collection, charging and dispenser for subscribing electrical energy storage |
| CN104283262B (en) * | 2014-09-30 | 2016-08-17 | 西安交通大学 | A kind of high-power wireless charging method based on field coupling and device |
| CN104333145A (en) * | 2014-10-18 | 2015-02-04 | 刘跃进 | Electric vehicle-used rechargeable tire and tire-type wireless charging belt system |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004028595A1 (en) * | 2004-06-12 | 2005-12-29 | Daimlerchrysler Ag | Energy/data transmission device for non-contact transmission of energy/data between fixed and moving components has primary and secondary windings |
| DE202008015230U1 (en) * | 2008-11-18 | 2009-06-04 | Hübner, Burkhard, Dipl.-Ing. (FH) | Energy transmission system "inductive wheel" |
| CN102415055A (en) * | 2009-04-29 | 2012-04-11 | 威德米勒界面有限公司及两合公司 | System for supplying bus subscriber modules with contactless energy and data |
| WO2011065792A2 (en) * | 2009-11-30 | 2011-06-03 | Korea Advanced Institute Of Science And Technology | Billing system and method for electric vehicles |
| EP2677624A1 (en) * | 2011-02-17 | 2013-12-25 | Pioneer Corporation | Charge control device and method, charging system, association method, and computer program |
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| CN104816646A (en) | 2015-08-05 |
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