CN208386246U - A kind of double coupling hybrid wireless electric energy Transmission systems of serial-parallel type - Google Patents
A kind of double coupling hybrid wireless electric energy Transmission systems of serial-parallel type Download PDFInfo
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- CN208386246U CN208386246U CN201820346062.1U CN201820346062U CN208386246U CN 208386246 U CN208386246 U CN 208386246U CN 201820346062 U CN201820346062 U CN 201820346062U CN 208386246 U CN208386246 U CN 208386246U
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Abstract
The utility model discloses a kind of double coupling hybrid wireless electric energy Transmission systems of serial-parallel type, including the high frequency power source that is connected and transmit circuit and the reception circuit being connected and load；The transmit circuit includes the transmitting coil and primary compensation capacitor of the coupling electrode plate connecting with primary circuit and series connection, and the transmitting coil includes the primary side inductance being connected in series and transmit circuit internal resistance；The reception circuit includes the coupling electrode plate connecting with secondary circuit and the receiving coil being connected in parallel and secondary side compensating electric capacity, and the receiving coil includes the secondary inductance being connected in series and reception circuit internal resistance.The utility model is negative using two kinds of transmission modes of field coupling and magnetic field coupling is loaded into row wireless power simultaneously, so that the more traditional field coupling and magnetic field coupling wireless power transmission systems of the efficiency of transmission of system is improved, transmission range is increased, and realizes remote and stable wireless power transmission.
Description
Technical field
The utility model relates to the technical fields of wireless power transmission, and it is mixed to refer in particular to a kind of double couplings of serial-parallel type
Close radio energy transmission system.
Background technique
For traditional wired power transmission mode due to needing a large amount of plain conductor and lengthy and tedious stringing engineering, having reduces electricity consumption
Device flexibility is influenced etc. apparent disadvantage by working environment.It is asked to solve the limitation of traditional electric energy transmission mode
Topic, wireless power transmission technology are suggested many years ago.This mode takes convenient electricity, saving metal resource and is not necessarily to many and diverse
Stringing engineering compensates for the defect of traditional wire power transmission mode.
Wireless power transmission technology mainly includes magnetic field coupling-type, field coupling formula and microwave type etc..Although microwave type passes
Defeated distance can achieve far, but efficiency is extremely low, power is small and it is serious to dissipate, at present using less.In practical application, magnetic
Field manifold type and field coupling formula are studied more in recent years since transimission power is larger, efficiency is higher.But both modes
Transmission performance is seriously limited by transmission range.As distance increases, efficiency of transmission will be substantially reduced, and be unfavorable for the reality of system
Border application.Currently, the transmission range of field coupling formula wireless power transmission is mostly in a centimetre grade, the transmission range of magnetic field coupling-type exists more
Tens centimetres of grade.How effectively improving the distance of wireless power transmission and keeping the high efficiency of system is the current face of the technology
The important problem faced.
Utilize field coupling and magnetic field coupling simultaneously in same system, the coupling effect that two ways can be made to generate
It should be overlapped mutually, substantially increase the transimission power of traditional single field coupling and single magnetic field coupling wireless power transmission systems, and increase
But the transmission range of coupled system realizes remote and stable wireless power transmission.
Utility model content
It is double to propose a kind of serial-parallel type for the shortcomings that the purpose of the utility model is to overcome the prior arts and deficiency
Hybrid wireless electric energy Transmission system is coupled, two kinds of sides of field coupling wireless power transmission and magnetic field coupling wireless power transmission are passed through
Method simultaneous transmission energy, so that the coupling mechanism that two kinds of coupled modes generate is overlapped mutually, so that the efficiency of transmission of system relatively passes
The field coupling and magnetic field coupling wireless power transmission systems of system are improved, and transmission range is increased, and system power being capable of long distance
It is transmitted from stablizing, is suitably applied practical matter.
To achieve the above object, a kind of technical solution provided by the utility model are as follows: double coupling mixing of serial-parallel type
Radio energy transmission system, including the high frequency power source that is connected and transmit circuit and the reception circuit being connected and load；
The transmit circuit includes the transmitting coil and primary side compensation electricity of the coupling electrode plate connecting with primary circuit and series connection
Hold, the transmitting coil includes the primary side inductance being connected in series and transmit circuit internal resistance；The reception circuit includes and secondary side is electric
The coupling electrode plate of road connection and the receiving coil being connected in parallel and secondary side compensating electric capacity, the receiving coil include that series connection connects
The secondary inductance connect and reception circuit internal resistance；The transmitting coil and primary compensation capacitor constitute series resonant circuit, described to connect
Take-up circle and secondary side compensating electric capacity constitute antiresonant circuit, and the transmitting coil is identical with receiving coil Same Name of Ends, the hair
Ray circle transmits energy to receiving coil by magnetic field coupling, and the coupling electrode plate being connected with primary circuit passes through field coupling
Energy is transmitted to the coupling electrode plate being connected with secondary circuit, it is wireless that the energy of electric and magnetic fields transmitting gives load to carry out simultaneously
Power supply.
The utility model compared with prior art, have the following advantages that with the utility model has the advantages that
1, it is negative simultaneously using two kinds of transmission modes of field coupling and magnetic field coupling and is loaded into row wireless power, so that system
The more traditional field coupling of efficiency of transmission and magnetic field coupling wireless power transmission systems are improved, and transmission range is increased, and are realized
Remote and stable wireless power transmission.
2, system structure is simple, without changing the structure of conventional wireless transmission system, is easy to construct and realize.
Detailed description of the invention
Fig. 1 is the schematic device of the hybrid wireless electric energy Transmission system provided in embodiment.
Fig. 2 is the equivalent circuit schematic of the hybrid wireless electric energy Transmission system provided in embodiment.
Fig. 3 is the waveform diagram of the voltage and electric current that load in embodiment.
Fig. 4 is in traditional serial-parallel type field coupling, magnetic field coupling radio energy transmission system and embodiment
The efficiency of transmission of hybrid wireless electric energy Transmission system and the relationship comparison diagram of transmission range.
Specific embodiment
The utility model is described in further detail combined with specific embodiments below.
The basic principle of the double coupling hybrid wireless electric energy Transmission systems of serial-parallel type provided by the present embodiment is simultaneously
It is negative using two kinds of transmission modes of field coupling and magnetic field coupling and is loaded into row wireless power, so that the more traditional single electric field of system,
Magnetic field coupling radio electric energy transmission system efficiency of transmission improves, and transmission range increases, and realizes long range and stable radio
It can transmit, be suitably applied practical matter.
As shown in Figure 1, the double coupling hybrid wireless electric energy Transmission systems of the serial-parallel type, including the height being connected
Frequency power source and transmit circuit and the reception circuit being connected and load；The transmit circuit includes connecting with primary circuit
Coupling electrode plate and the transmitting coil and primary compensation capacitor C of series connection1, the transmitting coil includes the original being connected in series
Side inductance L1With transmit circuit internal resistance R1；The reception circuit includes that the coupling electrode plate connecting with secondary circuit and parallel connection connect
The receiving coil and pair side compensating electric capacity C connect2, the receiving coil includes the secondary inductance L being connected in series2In reception circuit
Hinder R2；The transmitting coil and primary compensation capacitor constitute series resonant circuit, the receiving coil and secondary side compensating electric capacity structure
At antiresonant circuit, the transmitting coil is identical with receiving coil Same Name of Ends, and the transmitting coil is transmitted by magnetic field coupling
Energy to receiving coil, the coupling electrode plate that is connected with primary circuit by field coupling transmit energy to secondary circuit phase
The energy of the coupling electrode plate of connection, electric and magnetic fields transmitting gives load to carry out wireless power simultaneously.The coupling electrode plate
Quantity is unlimited, and coupling mechanism can be, but not limited to flat, disc type, drum type brake etc., and system is when working between former and deputy side electrode plate
Displacement current is generated, coupled capacitor C is expressed ass1、Cs2, electric energy is transmitted by field coupling.
Fig. 2 is the equivalent circuit diagram of the utility model.Wherein primary inductor L1With secondary inductance L2Same Name of Ends is identical；Coupling
Capacitor Cs1With Cs2It is expressed as series equivalent coupled capacitor Cs, expression formula is as follows:
The coupling mode equations of system are as follows:
In formula, usFor high frequency power source forcing item, ω0For transmit circuit, receive circuit natural angular frequency,γ1And γ2It is divided into the proportion of goods damageds that Fa She, not receive circuit, and γLFor load factor；To emit, receiving
The coefficient of coup between circuit；To emit, receiving the capacitive coupling coefficient between circuit；
To emit, receiving the inductive coupling coefficient between circuit.
Flat coupling mechanism is used herein, then the relationship of coupled capacitor size and transmission range d are as follows:
Wherein S is coupling electrode plate effective area, ε0For permittivity of vacuum, εrFor relative dielectric constant.
The relationship of mutual inductance size and transmission range between transmitting, receiving coil are as follows:
Wherein N1、N2Respectively emit, the coil turn of receiving coil, r1、r2Respectively emit, the coil of receiving coil
Radius, μ are magnetic conductivity.
It solves system equation (2), obtains system efficiency of transmission expression formula when resonance:
If high frequency power source forcingThe intrinsic frequency of transmitting coil and receiving coil
Rate is f0=1MHz, transmit circuit inductance L1With reception circuit inductance L2It is 0.25mH, primary compensation capacitor C1It is compensated with secondary side
Capacitor C2It is 100pF, transmit circuit internal resistance R1With reception circuit internal resistance R2It is 5 Ω, load resistance RL=500 Ω, transmitting,
Receiving coil the number of turns N1=N2=5, coil radius r1=r2=0.4m, coupling electrode plate effective area S=0.64m2。
With field coupling coefficient kC=0.0472, magnetic field coupling coefficient kL=0.0843, coefficient of coup k=0.1315, transmission
For distance d=0.6m, Fig. 3 is the voltage current waveform of load, it is known that load can obtain stable electric energy.
Can be obtained by formula (5) it is shown in solid in the efficiency of transmission of system and the relation curve such as Fig. 4 of transmission range, respectively this
Utility model mentioned system effectiveness curve (enables k when singly having field couplingL=0) system effectiveness curve and when singly having magnetic field coupling
(enable kC=0) system effectiveness curve, three kinds of systems are serial-parallel type.Hollow triangle mark point is by under PSIM environment
The efficiency of transmission of correspondence system at the variant transmission range that circuit simulation obtains, it can be seen that theory analysis is with emulation reasonable
Result is consistent in error range.By curve comparison in figure it is found that the mentioned system of the utility model due to utilizing two kinds simultaneously
Coupled modes transmit electric energy, and compared to traditional two kinds single coupled systems of efficiency of transmission of hybrid system are significantly improved,
And transmission range farther out when advantage become apparent, compensate for what legacy system transmission performance was influenced by transmission range to a certain extent
Defect.
As the above analysis, the double coupling hybrid wireless electric energy Transmission systems of the serial-parallel type of the utility model, pass through
Field coupling wireless power transmission and magnetic field coupling wireless power transmission two methods simultaneous transmission energy, so that two kinds of coupling sides
The coupling mechanism that formula generates is overlapped mutually, and increases the transmission range of traditional field coupling and magnetic field coupling wireless power transmission, is improved
Efficiency of transmission can be realized remote regulated power transmission, be suitably applied practical matter, be worthy to be popularized.
Embodiment described above is only the preferred embodiment of the utility model, and the implementation of the utility model is not limited with this
Range, therefore all shapes according to the utility model, change made by principle, it should all cover within the protection scope of the present utility model.
Claims (1)
1. a kind of double coupling hybrid wireless electric energy Transmission systems of serial-parallel type, it is characterised in that: including the high frequency function being connected
Rate source and transmit circuit and the reception circuit being connected and load；The transmit circuit includes the coupling connecting with primary circuit
Electrode plate and the transmitting coil and primary compensation capacitor of series connection, the transmitting coil include the primary side inductance being connected in series
With transmit circuit internal resistance；The reception circuit includes the coupling electrode plate connecting with secondary circuit and the reception line being connected in parallel
It encloses and secondary side compensating electric capacity, the receiving coil includes the secondary inductance being connected in series and reception circuit internal resistance；The emission lines
Circle and primary compensation capacitor constitute series resonant circuit, and the receiving coil and secondary side compensating electric capacity constitute antiresonant circuit,
The transmitting coil is identical with receiving coil Same Name of Ends, and the transmitting coil transmits energy to receiving coil by magnetic field coupling,
The coupling electrode plate being connected with primary circuit transmits energy to the coupling electrode being connected with secondary circuit by field coupling
The energy of plate, electric and magnetic fields transmitting gives load to carry out wireless power simultaneously；
Wherein, the coupling mode equations of system are as follows:
In formula, usFor high frequency power source forcing item, ω0For transmit circuit, receive circuit natural angular frequency,Wherein L1For primary side inductance, L2For secondary inductance；γ1And γ2It is divided into and Fa She, receive circuit
The proportion of goods damageds, andWherein R1For transmit circuit internal resistance, R2To receive
Circuit internal resistance, RLFor load；γLFor load factor；To emit, receiving the coefficient of coup between circuit；To emit, receiving the capacitive coupling coefficient between circuit；To emit, receiving between circuit
Inductive coupling coefficient.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108306420A (en) * | 2018-03-14 | 2018-07-20 | 华南理工大学 | A kind of double coupling hybrid wireless electric energy Transmission systems of serial-parallel type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108306420A (en) * | 2018-03-14 | 2018-07-20 | 华南理工大学 | A kind of double coupling hybrid wireless electric energy Transmission systems of serial-parallel type |
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