CN102882287B - A kind of cascade connection type non-contact power supply system and mobile powered body - Google Patents
A kind of cascade connection type non-contact power supply system and mobile powered body Download PDFInfo
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- CN102882287B CN102882287B CN201210365825.4A CN201210365825A CN102882287B CN 102882287 B CN102882287 B CN 102882287B CN 201210365825 A CN201210365825 A CN 201210365825A CN 102882287 B CN102882287 B CN 102882287B
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Abstract
The present invention's a kind of cascade connection type non-contact power supply system and mobile powered body.Electric power system comprises power circuit, multiple cascade section circuit, terminating circuit.Wherein power circuit comprises a high frequency electric source and a power supply coupling, cascade section circuit comprises for electromagnetic coupled section and impedance inverter circuit, the power supply coupling output of described power circuit is connected in series the confession electromagnetic coupled section of described cascade section circuit, be connected in series multiple described cascade section circuit more successively, and by the impedance matching termination end circuit of end cascade section circuit.Mobile powered body, comprise by electromagnetic coupled section, regulator rectifier circuit, rechargeable battery and power unit, be connected with regulator rectifier circuit by electromagnetic coupled section, regulator rectifier circuit is connected with charging circuit with power unit respectively.Alternating Current Power Supply efficiency of the present invention can up to 90%, and affect insensitive by the movement velocity and electricity consumption load variations moving powered body; The use of high-performance high-frequency power supply can be reduced in a large number, reduce structure and the maintenance cost of electric power system.
Description
Technical field
The present invention relates to new energy technology, especially electric power or hybrid power moving body provide non-contact electric power supply system, particularly relate to a kind of cascade connection type non-contact power supply system and mobile powered body.
Background technology
The structure of low-carbon (LC) society, has expedited the emergence of the very big demand of people to the electric such as bullet train, electric automobile.At present, electric is mainly taked: one, realizes carrying out continuing power supply to electric locomotive by contact line; Two, utilize storage battery to come the supply of electric power of small-sized electric vehicle implementation phase.But power contacts netting twine road is various, technical sophistication, involve great expense, and very easily break down under atrocious weather condition; Producing too much chemical storage batteries, is also the potential threat to natural environment.If the form of noncontact (or wireless) can be adopted to be that electric is powered, then effectively can avoid the problems referred to above.
Wireless power supply can divide radial pattern and the large class of non-radiating two.AC wave is radiated in free space by transmitting antenna by radial pattern wireless power supply, then is collected by the electromagnetic wave of characteristic frequency in free space by reception antenna.Non-radiating wireless power supply, by the mode of near-field coupling, utilizes the electromagnetic induction principle of AC field or AC magnetic field efficiently to transmit to the short distance realizing electric energy.For in-plant non-contact power supply, if consider the impact to external world of power supply distance, complex environment and electric power system, AC magnetic field coupling is the preferred option of wireless power.
The non-contact power supply scheme that current people propose, the paired resonance magnetic coupling coil of most employings transmits electric energy; For realizing powering to electric, people propose below the road foundation of advancing at electric or a magnetic coupling coil is settled at interval of a segment distance, can wirelessly be powered through this place at electric in road both sides.But in this power supply plan, on road, each magnetic coupling coil place needs arrangement high performance high frequency electric source, causes structure and maintenance cost that electric power system is very high; In addition, when moving body is kept in motion, the coupling coefficient between itself and power supply coil can not keep higher always, and therefore power supplying efficiency is greatly affected; Same due to this reason, when moving body is kept in motion, be difficult to keep its energizing power to stablize.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of cascade connection type non-contact power supply system and mobile powered body.
Described electric power system comprises power circuit, multiple cascade section circuit, terminating circuit.Wherein power circuit comprises a high frequency electric source and a power supply coupling, cascade section circuit comprises for electromagnetic coupled section and impedance inverter circuit, the power supply coupling output of described power circuit is connected in series the confession electromagnetic coupled section of described cascade section circuit, be connected in series multiple described cascade section circuit more successively, and by the impedance matching termination end circuit of end cascade section circuit, high frequency electric source is mated by power supply provides electric energy to whole system, and the reflection coefficient that power supply coupling also detects late-class circuit keeps its outputting current steadily.
The powered body of described movement, comprise by electromagnetic coupled section, regulator rectifier circuit, rechargeable battery and power unit, be connected with regulator rectifier circuit by electromagnetic coupled section, regulator rectifier circuit is connected with charging circuit with power unit respectively, it can when moving upward along the cascade side of electric power system, the alternating electromotive force continued provided with magnetic-coupled form acquisition electric power system.
Describedly comprise loop construction by electromagnetic coupled section, the magnetic field induction produced by electric power system goes out alternating voltage; The induced voltage exported by electromagnetic coupled section is carried out rectification and stable output by rectifying and voltage-stabilizing portion; Rechargeable battery described by electromagnetic coupled section no-output voltage or fault time, for power unit provides temporary electrical power supply; Rechargeable battery, when described output AC voltage normal by electromagnetic coupled section, charges by rectifying and voltage-stabilizing output voltage.
The powered body of described movement can single work, also powered for multiple movement body can be combined, and becomes mobile powered group.
The useful effect that the present invention has is: at mobile powered body along in cascade connection type electric power system motion process, obtains continue and stable supply of electric power by non-contacting mode; By this method of supplying power to, Alternating Current Power Supply efficiency can up to 90%, and affect insensitive by the movement velocity and electricity consumption load variations moving powered body; The use of high-performance high-frequency power supply can be reduced in a large number, reduce structure and the maintenance cost of electric power system; Mobile powered body can single work, also powered for multiple movement body can be combined, become mobile powered group.
Accompanying drawing explanation
Fig. 1 is the figure of the structure of cascade connection type non-contact power supply system and powered moving body;
Fig. 2 adopts the Contactless high-efficiency wireless power supply system of transmission line and the figure of powered moving body;
Fig. 3 is that parallel double line style is powered the figure of magnetic coupling section;
Fig. 4 is the figure adopting centralised element to build delaying type impedance inverter circuit;
Fig. 5 adopts parallel wire for the figure of the AC wave of electromagnetic coupled section combinatorial delays type impedance transformation;
Fig. 6 is the figure adopting centralised element to build offset-type impedance inverter circuit;
Fig. 7 adopts parallel wire for the figure of the AC wave of electromagnetic coupled section combination compensated type impedance transformation;
Fig. 8 is the figure adopting centralised element to build terminating circuit.
Embodiment
Below, describe in detail with reference to the accompanying drawings about embodiments of the present invention.The block diagram of Fig. 1 illustrates that the movement powered body of the non-contact power supply system of a mode of the present invention as power supply part and a mode is an example as the structural relation of electric component and described power supply part and electric component.Block diagram in Fig. 1, adopt the form of square frame that the electric function of different parts is carried out clear division, but actual structural element is difficult to divide completely according to its function, and a structural element may relate to multiple electric function.
In FIG, the present invention's a kind of cascade connection type non-contact power supply system and mobile powered body, described electric power system comprises power circuit, multiple cascade section circuit, terminating circuit.Wherein power circuit comprises a high frequency electric source and a power supply coupling, cascade section circuit comprises for electromagnetic coupled section and impedance inverter circuit, the power supply coupling output of described power circuit is connected in series the confession electromagnetic coupled section of described cascade section circuit, be connected in series multiple described cascade section circuit more successively, and by the impedance matching termination end circuit of end cascade section circuit, high frequency electric source is mated by power supply provides electric energy to whole system, and the reflection coefficient that power supply coupling also detects late-class circuit keeps its outputting current steadily.
The powered body of described movement, comprise by electromagnetic coupled section, regulator rectifier circuit, rechargeable battery and power unit, be connected with regulator rectifier circuit by electromagnetic coupled section, regulator rectifier circuit is connected with charging circuit with power unit respectively, it can when moving upward along the cascade side of electric power system, the alternating electromotive force continued provided with magnetic-coupled form acquisition electric power system.
In work, high frequency electric source produces single-frequency alternating current; Load state, by the load state of detecting rear class unit, is fed back to high frequency electric source, and makes outputting current steadily by power supply matching unit; Produce AC magnetic field for electromagnetic coupled section, but suppress alternating current magnetic energy to external radiation; Impedance transformation then will compensate the phase deviation produced alternating current for electromagnetic coupled section, makes each electric current for electromagnetic coupled section have consistent phase place; Power supply part end is done empty resistanceization process by terminating circuit, prevents electric power system from unrestrictedly consuming and exchanges real merit; In the powered body of described movement, produce ac induction voltage by electromagnetic coupled section by the AC magnetic field produced for electromagnetic coupled section; In the powered body of described movement, the ac induction voltage produced by electromagnetic coupled section is carried out rectification and voltage stabilizing process by regulator rectifier circuit, and charges to the rechargeable battery in mobile powered body; In the powered body of described movement, when exporting without alternating voltage by electromagnetic coupled section, rechargeable battery is temporarily for mobile powered body provides supply of electric power.
In work, when mobile powered body moves on the line direction along electric power system cascade section circuit, between the alternating current that the described induction alternating current by the output of electromagnetic coupled section and described electric power system provide, there is certain Doppler shift.Described by electromagnetic coupled section, as a kind of magnetic induction parts, its quality factor should remain on certain low value level, and during to ensure that the ac frequency responded to has maximum Doppler skew, bulk supply efficiency remains on a higher level; Or the described electromagnetic coupled section that is subject to can comprise adaptive circuit module, automatically can regulate the resonance frequency of himself with Doppler shift.In working band, be describedly less than 1/10th of impedance absolute value in fact by the virtual impedance absolute value in electromagnetic coupled section circuit.
Fig. 2 shows to adopt based on parallel double-conductor transmission line and builds described non-contact power supply system, adopts magnetic induction coil to build the figure of the powered body of described movement by electromagnetic coupled section.
Adopt excellent wire producing parallel double line style transmission line, according to the electric wave wavelength on this transmission line, the length of this section of transmission line is restricted to 1/10 no longer than electric wave wavelength, become the confession electromagnetic coupled section of described electric power system, as shown in Figure 3.
The characteristic impedance of the transmission line according to Fig. 3 and its equivalent-circuit model, utilize centralized inductance capacitance to build the delaying type impedance inverter circuit of impedance matching with it, as shown in Figure 4; This impedance transformation and the above-mentioned electromagnetic coupled section that supplies are combined through series connection, and form a standing wave cycle, as shown in Figure 5 on electrically.
The characteristic impedance of the transmission line according to Fig. 3 and its equivalent-circuit model, utilize centralized inductance capacitance to build the offset-type impedance inverter circuit of impedance matching with it, as shown in Figure 6; This impedance transformation and the above-mentioned electromagnetic coupled section that supplies are combined through series connection, and compensate, as shown in Figure 7 at electric enterprising line phase.
The characteristic impedance of the transmission line according to Fig. 3 and its equivalent-circuit model, utilize centralized inductance capacitance to build the void resistanceization terminating circuit of impedance matching with it, as shown in Figure 8.Open circuit termination is transformed to short circuit termination by above-mentioned empty resistanceization terminating circuit.
The above-mentioned electromagnetic coupled section that supplies is connected with above-mentioned delaying type impedance transformation, or is connected with above-mentioned offset-type impedance transformation, becomes the cascade section circuit of electric power system; Multiple cascade section circuit period property ground serial connection, one end connects power circuit, and the other end connects terminating circuit, the electric power system that common composition is contactless.
Adopt good conductor to make magnetic induction coil, in coil joint, serial capacitance device becomes wire loop; The parallel placement of one or more above-mentioned wire loops, what become mobile powered body is subject to electromagnetic coupled section; Be connected above-mentioned with regulator rectifier circuit by electromagnetic coupled section; Above-mentioned power unit is connected with regulator rectifier circuit; Above-mentioned rechargeable battery is also connected with regulator rectifier circuit.
The above-mentioned coil by electromagnetic coupled section is parallel in above-mentioned electric power system and places for the parallel double-conductor transmission line plane of electromagnetic coupled section, and the center superposition of coil axle center and transmission line, between the two apart from being no more than 1/10 of coil characteristic size, integrant wireless power supply system.
For realizing high power supplying efficiency, the electric power system terminal of cascade need carry out idleization process; Coil maximum sized 1/10 generally should be less than for the spacing of the coil plane by electromagnetic coupled section in the transmission line plane of electromagnetic coupled section and the powered body of above-mentioned movement in above-mentioned electric power system; That moves powered body is subject to electromagnetic coupling structure by regulating its electric capacity and load, realizes the optimization of power supplying efficiency.
In above-mentioned electric power system, the confession electromagnetic coupled section be made up of transmission line outwards provides magnetic field, shows as two-port network electrically; Except the parallel double-conductor transmission line that this enforcement adopts, anyly the harmless of magnetic field externally can be produced or low damage two-port network all can be used to structure for electromagnetic coupled section.
In confession electromagnetic coupled section in above-mentioned electric power system and the powered body of above-mentioned movement by electromagnetic coupled section, occur also to can be non-parallel relation between magnetic-coupled transmission line and coil plane.
The above is only preferred embodiment of the present invention, every above embodiment is done according to essence of the present invention any simple modification, change and equivalent structure change, all still belong in right.
Claims (1)
1. a cascade connection type non-contact power supply system, it is characterized in that: described electric power system comprises power circuit, multiple cascade section circuit, terminating circuit, wherein power circuit comprises a high frequency electric source and a power supply matching unit, cascade section circuit comprises for electromagnetic coupled section and impedance inverter circuit, the power supply matching unit output of described power circuit is connected in series the confession electromagnetic coupled section of described cascade section circuit, be connected in series multiple described cascade section circuit more successively, and the impedance inverter circuit of end cascade section circuit is connect terminating circuit, high frequency electric source provides electric energy by power supply matching unit to whole system, the reflection coefficient that power supply matching unit also detects late-class circuit keeps its outputting current steadily.
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| CN201210365825.4A CN102882287B (en) | 2012-09-28 | 2012-09-28 | A kind of cascade connection type non-contact power supply system and mobile powered body |
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| CN201210365825.4A CN102882287B (en) | 2012-09-28 | 2012-09-28 | A kind of cascade connection type non-contact power supply system and mobile powered body |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687595B (en) * | 2013-05-09 | 2022-01-14 | 泰科电子(上海)有限公司 | Non-contact power supply circuit |
| CN104242482A (en) * | 2014-08-26 | 2014-12-24 | 苏州市职业大学 | Ultrasonic wireless power transmission system |
| CN104333145A (en) * | 2014-10-18 | 2015-02-04 | 刘跃进 | Electric vehicle-used rechargeable tire and tire-type wireless charging belt system |
| CN105966259B (en) * | 2016-06-06 | 2017-12-29 | 浙江大学 | Wireless energy energy supplying system in a kind of electric automobile during traveling based on wheel |
| CN106143185A (en) * | 2016-06-28 | 2016-11-23 | 浙江大学 | Wireless power supply system in a kind of novel electric vehicle based on tire traveling |
| CN109038862B (en) * | 2018-07-12 | 2020-05-12 | 杭州电子科技大学 | Mobile power receiver and traveling wave type non-contact power supply system using same |
| CN112803560A (en) * | 2019-11-14 | 2021-05-14 | Oppo广东移动通信有限公司 | Wireless charging device, equipment to be charged, charging system and method and storage medium |
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| CN101835653A (en) * | 2007-10-25 | 2010-09-15 | 丰田自动车株式会社 | Electric vehicle and power feeding apparatus for the vehicle |
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