CN102882287A - Cascaded non-contact power supply system and mobile power receiving body - Google Patents
Cascaded non-contact power supply system and mobile power receiving body Download PDFInfo
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- CN102882287A CN102882287A CN2012103658254A CN201210365825A CN102882287A CN 102882287 A CN102882287 A CN 102882287A CN 2012103658254 A CN2012103658254 A CN 2012103658254A CN 201210365825 A CN201210365825 A CN 201210365825A CN 102882287 A CN102882287 A CN 102882287A
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Abstract
The invention discloses a cascaded non-contact power supply system and a mobile power receiving body. The power supply system comprises a power circuit, a plurality of cascaded segment circuits and a terminal circuit, the power circuit comprises a high-frequency power source and a power match, each cascaded segment circuit comprises a power supply magnetic coupling segment and an impedance conversion circuit, a power match output end of the power circuit is serially connected with the power supply magnetic coupling segment of one cascaded segment circuit and then sequentially serially connected with the other cascaded segment circuits, and the impedance matching end of the tail cascaded segment circuit is connected with the terminal circuit. The mobile power receiving body comprises a power receiving magnetic coupling segment, a rectifying and voltage stabilizing circuit, a charge battery and a power utilization unit, the power receiving magnetic coupling segment is connected with the rectifying and voltage stabilizing circuit, and the rectifying and voltage stabilizing circuit is respectively connected with the power utilization unit and the charge battery. Alternating-current power supply efficiency can be as high as 90% and is insusceptible to moving speed and electricity load change of the mobile power receiving body, utilization of high-performance high-frequency power sources can be greatly reduced, and construction and maintenance costs of the power supply system are lowered.
Description
Technical field
The present invention relates to new energy technology, provide the non-contact electric power supply system in particular for electric power or hybrid power moving body, relate in particular to a kind of cascade connection type non-contact power supply system and movement and be subjected to electric body.
Background technology
The structure of low-carbon (LC) society has expedited the emergence of the very big demand of people to electrics such as bullet train, electric automobiles.At present, electric is mainly taked: one, realize electric locomotive is continued supply of electric power by contact line; Two, utilize storage battery to come the supply of electric power of small-sized electric vehicle implementation phase.Yet electric power contact line circuit is various, technical sophistication, involve great expense, and very easily breaks down under the atrocious weather condition; Producing too much chemical storage batteries, also is the potential threat to natural environment.If can adopt the form of noncontact (or wireless) is that electric is powered, then can effectively avoid the problems referred to above.
Wireless power supply can divide radial pattern and non-radiative type two large classes.The radial pattern wireless power supply is radiated AC wave in the free space by transmitting antenna, by reception antenna the electromagnetic wave of characteristic frequency in the free space is collected again.Non-radiative type wireless power supply utilizes the electromagnetic induction principle of AC field or AC magnetic field to realize that the short distance of electric energy efficiently transmits by the mode of near-field coupling.For in-plant non-contact power supply, if consider the impact to external world of power supply distance, complex environment and electric power system, the AC magnetic field coupling is the preferred option of wireless power.
The non-contact power supply scheme of at present people's proposition, the paired resonance magnetic coupling coil of most employings transmits electric energy; For realizing that electric is powered, people propose below the road foundation that electric is advanced or the road both sides whenever is spaced a distance settles a magnetic coupling coil, in order to can wirelessly be powered when this place of electric process.Yet in this power supply plan, each magnetic coupling coil place needs to settle a high performance high frequency electric source on the road, causes the very high structure of electric power system and maintenance cost; In addition, when moving body was kept in motion, itself and the coupling coefficient of powering between the coil can not keep higher always, so power supplying efficiency is greatly affected; Owing to this reason, when moving body is kept in motion, be difficult to keep its power supply electrical power stabilization equally.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of cascade connection type non-contact power supply system and moved to be subjected to electric body.
Described electric power system comprises power circuit, a plurality of 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 successively more a plurality of described cascade section circuit, and with the impedance matching termination end circuit of terminal cascade section circuit, high frequency electric source mates to whole system by power supply provides electric energy, and the reflection coefficient that the power supply coupling also detects late-class circuit keeps its outputting current steadily.
Described movement is subjected to electric body, comprise and be subjected to electromagnetic coupled section, regulator rectifier circuit, rechargeable battery and power unit, be connected with regulator rectifier circuit by the electromagnetic coupled section, regulator rectifier circuit is connected with charging circuit with power unit respectively, it can when moving along the cascade direction of electric power system, obtain the alternating electromotive force that continues that electric power system provides with magnetic-coupled form.
The described electromagnetic coupled section that is subjected to comprises loop construction, can go out alternating voltage by the magnetic field induction that electric power system produces; Rectifying and voltage-stabilizing section will be subjected to the induced voltage of electromagnetic coupled section output to carry out rectification and stable output; Rechargeable battery is described when being subjected to electromagnetic coupled section no-output voltage or fault, for power unit provides interim supply of electric power; Rechargeable battery, can charge by the rectifying and voltage-stabilizing output voltage when being subjected to the normal output AC voltage of electromagnetic coupled section described.
Described movement is subjected to the electric body can single work, also can be made up by electric body a plurality of movements, becomes the mobile electricity group that is subjected to.
The useful effect that the present invention has is: be subjected to electric body along in the cascade connection type electric power system motion process mobile, can obtain to continue and stable supply of electric power by non-contacting mode; By this method of supplying power to, Alternating Current Power Supply efficient can be up to 90%, and is subjected to mobilely to be subjected to the movement velocity of electric body and electricity consumption load variations to affect insensitive; Can reduce in a large number the use of high-performance high-frequency power supply, reduce structure and the maintenance cost of electric power system; Mobile be subjected to the electric body can single work, also can be made up by electric body a plurality of movements, become the mobile electricity group that is subjected to.
Description of drawings
Fig. 1 is cascade connection type non-contact power supply system and the figure that is subjected to the structure of electromigration kinetoplast;
Fig. 2 is the figure that adopts the Contactless high-efficiency wireless power supply system of transmission line and be subjected to the electromigration kinetoplast;
Fig. 3 is the figure of parallel double line style power supply magnetic coupling section;
Fig. 4 adopts centralised element to build the figure of 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 adopts centralised element to build the figure of 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 adopts centralised element to build the figure of terminating circuit.
Embodiment
Below, describe in detail with reference to the accompanying drawings about embodiments of the present invention.It is an example as the structural relation of electric component and described power supply part and electric component that the non-contact power supply system that the block diagram of Fig. 1 illustrates a mode of the present invention is subjected to electric body as the movement of power supply part and a mode.Block diagram among Fig. 1, the form that adopts square frame is carried out clear division with the electric function of different parts, but actual structural element is difficult to divide fully according to its function, and a structural element may relate to a plurality of electric functions.
In Fig. 1, a kind of cascade connection type non-contact power supply of the present invention system is subjected to electric body, described electric power system to comprise power circuit, a plurality of cascade section circuit, terminating circuit with mobile.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 successively more a plurality of described cascade section circuit, and with the impedance matching termination end circuit of terminal cascade section circuit, high frequency electric source mates to whole system by power supply provides electric energy, and the reflection coefficient that the power supply coupling also detects late-class circuit keeps its outputting current steadily.
Described movement is subjected to electric body, comprise and be subjected to electromagnetic coupled section, regulator rectifier circuit, rechargeable battery and power unit, be connected with regulator rectifier circuit by the electromagnetic coupled section, regulator rectifier circuit is connected with charging circuit with power unit respectively, it can when moving along the cascade direction of electric power system, obtain the alternating electromotive force that continues that electric power system provides with magnetic-coupled form.
In the work, high frequency electric source produces the single-frequency alternating current; The power supply matching unit will be detected the load state of rear class unit, and load state is fed back to high frequency electric source, and make outputting current steadily; Produce AC magnetic field for the electromagnetic coupled section, but suppress alternating current magnetic energy to external radiation; Impedance transformation then will compensate and supply the electromagnetic coupled section to the phase deviation that alternating current produces, and make each electric current for the electromagnetic coupled section have consistent phase place; Terminating circuit is done empty resistanceization processing with the power supply part end, prevents that electric power system from unrestrictedly consuming the real merit of interchange; Described movement is subjected in the electric body, is subjected to the electromagnetic coupled section to produce ac induction voltage by the AC magnetic field that produces for the electromagnetic coupled section; Described movement is subjected in the electric body, and the ac induction voltage that regulator rectifier circuit will be produced by the electromagnetic coupled section carries out rectification and voltage stabilizing is processed, and charged by the rechargeable battery in the electric body to mobile; Described movement is subjected in the electric body, and when exported without alternating voltage by the electromagnetic coupled section, rechargeable battery is subjected to electric body that supply of electric power is provided for mobile temporarily.
In the work, mobile be subjected to electric body when the line direction along electric power system cascade section circuit moves, described being subjected to has certain Doppler frequency deviation between the induction alternating current of electromagnetic coupled section output and the alternating current that described electric power system provides.The described electromagnetic coupled section that is subjected to, as a kind of magnetic induction parts, its quality factor should remain on certain low value level, and when having the maximum Doppler skew with the ac frequency that guarantees induction, bulk supply efficient remains on a higher level; Perhaps, the described electromagnetic coupled section that is subjected to can comprise the adaptive circuit module, can automatically regulate with Doppler frequency deviation the resonance frequency of himself.In working band, describedly be subjected to virtual impedance absolute value in the electromagnetic coupled section circuit less than 1/10th of its true impedance absolute value.
Fig. 2 shows and adopts parallel double-conductor transmission line is the described non-contact power supply of fundamental construction system, adopts magnetic induction coil to make up described movement and is subjected to electric body to be subjected to the figure of electromagnetic coupled section.
Adopting good wire producing parallel double line style transmission line, according to the electric wave wavelength on this transmission line, is no longer than 1/10 of electric wave wavelength with the length restriction of this section transmission line, becomes the confession electromagnetic coupled section of described electric power system, as shown in Figure 3.
Characteristic impedance and its equivalent-circuit model according to transmission line shown in Figure 3 utilize centralized inductance capacitance to build the delaying type impedance inverter circuit of with it impedance matching, as shown in Figure 4; This impedance transformation and the above-mentioned electromagnetic coupled section that supplies are carried out being combined through series connection, in standing wave cycle of electric formation, as shown in Figure 5.
Characteristic impedance and its equivalent-circuit model according to transmission line shown in Figure 3 utilize centralized inductance capacitance to build the offset-type impedance inverter circuit of with it impedance matching, as shown in Figure 6; This impedance transformation and the above-mentioned electromagnetic coupled section that supplies are carried out being combined through series connection, in electric enterprising line phase compensation, as shown in Figure 7.
Characteristic impedance and its equivalent-circuit model according to transmission line shown in Figure 3 utilize centralized inductance capacitance to build the void resistanceization terminating circuit of with it impedance matching, as shown in Figure 8.Above-mentioned empty resistanceization terminating circuit transforms to short circuit termination with open circuit termination.
The above-mentioned electromagnetic coupled section that supplies is connected with above-mentioned delaying type impedance transformation, perhaps is connected with above-mentioned offset-type impedance transformation, becomes the cascade section circuit of electric power system; Property ground serial connection of a plurality of cascade section circuit periods, an end connects power circuit, and the other end connects terminating circuit, jointly forms contactless electric power system.
Adopt good conductor to make magnetic induction coil, become wire loop in the serial connection capacitor element of coil joint; The parallel placement of one or more above-mentioned wire loops, become mobile be subjected to electric body be subjected to the electromagnetic coupled section; The above-mentioned electromagnetic coupled section that is subjected to is linked to each other with regulator rectifier circuit; Above-mentioned power unit links to each other with regulator rectifier circuit; Above-mentioned rechargeable battery also links to each other with regulator rectifier circuit.
The above-mentioned coil that is subjected to the electromagnetic coupled section is parallel in the above-mentioned electric power system 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 be carried out idleization processing; Be subjected to be subjected in the electric body between the coil plane of electromagnetic coupled section apart from generally should be less than coil maximum sized 1/10 for the transmission line plane of electromagnetic coupled section and above-mentioned movement in the above-mentioned electric power system; The mobile electromagnetic coupling structure that is subjected to of electric body that is subjected to can by regulating its electric capacity and load, be realized the optimization of power supplying efficiency.
In the above-mentioned electric power system, the confession electromagnetic coupled section that is made of transmission line outwards provides magnetic field, shows as two-port network on electric; Except the parallel double-conductor transmission line that this enforcement is adopted, any harmless or low two-port network that decreases that can externally produce magnetic field all can be used to structure for the electromagnetic coupled section.
Confession electromagnetic coupled section in the above-mentioned electric power system and above-mentioned movement are subjected to be subjected to the electromagnetic coupled section in the electric body, and non-parallel relation occurs also to can be between magnetic-coupled transmission line and the coil plane.
The above only is preferred embodiment of the present invention, and every any simple modification that essence is done above embodiment according to the present invention, change and equivalent structure change, and all still belong in the claim scope.
Claims (3)
1. a cascade connection type non-contact power supply system is subjected to electric body with moving, it is characterized in that: described electric power system comprises power circuit, a plurality of 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 successively more a plurality of described cascade section circuit, and with the impedance matching termination end circuit of terminal cascade section circuit, high frequency electric source mates to whole system by power supply provides electric energy, and the reflection coefficient that the power supply coupling also detects late-class circuit keeps its outputting current steadily.
2. the movement of a cascade connection type non-contact power supply system is subjected to electric body, comprise and be subjected to electromagnetic coupled section, regulator rectifier circuit, rechargeable battery and power unit, be connected with regulator rectifier circuit by the electromagnetic coupled section, regulator rectifier circuit is connected with charging circuit with power unit respectively, it can when moving along the cascade direction of electric power system, obtain the alternating electromotive force that continues that electric power system provides with magnetic-coupled form.
3. the movement of a kind of cascade connection type non-contact power supply according to claim 2 system is subjected to electric body, it is characterized in that: described movement is subjected to the electric body can single work, also can be made up by electric body a plurality of movements.
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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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Cited By (7)
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| 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 |
| CN105966259A (en) * | 2016-06-06 | 2016-09-28 | 浙江大学 | Wireless energy supply system based on wheels in traveling process of electric automobile |
| 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 |
| CN109038862A (en) * | 2018-07-12 | 2018-12-18 | 杭州电子科技大学 | Movement is by electric body and using the travelling-wave-type contactless power supply system by electric body |
| CN109687595A (en) * | 2013-05-09 | 2019-04-26 | 泰科电子(上海)有限公司 | Non-contact power supply circuit |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104333145A (en) * | 2014-10-18 | 2015-02-04 | 刘跃进 | Electric vehicle-used rechargeable tire and tire-type wireless charging belt system |
| CN105966259A (en) * | 2016-06-06 | 2016-09-28 | 浙江大学 | Wireless energy supply system based on wheels in traveling process of electric automobile |
| 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 |
| CN109038862A (en) * | 2018-07-12 | 2018-12-18 | 杭州电子科技大学 | Movement is by electric body and using the travelling-wave-type contactless power supply system by electric body |
| 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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| CN102882287B (en) | 2015-12-02 |
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