A kind of induction type radio energy transmission system for realizing constant current constant voltage output switching
Technical field
The present invention relates to a kind of induction type radio energy transmission systems for realizing constant current constant voltage output switching, belong to electric energy change
Change field.
Background technique
Induction type wireless power transmission technology passes through magnetic field in a non contact fashion and carries out safe and reliable electricity to electrical equipment
It can transmit, avoid electric leakage, contact electric spark, wet environment danger existing for traditional plug-in electric energy transmission system etc. and ask
Topic.The technology is widely used for electric car, AGV trolley, built-in medical device, pocket electronics field.
The main composition and the course of work of existing wireless charging system are as shown in Fig. 2: industrial-frequency alternating current is through over commutation
Become direct current, then becomes high-frequency alternating current again by inverter, high-frequency ac electrical pumping primary coil generates the height of alternation
Frequency magnetic field, secondary coil incudes in this high frequency magnetic field obtains induced electromotive force, which becomes again after passing through high-frequency rectification
For direct current, electric energy is provided to load.
In the present circumstance, the most common load is battery, but since the equivalent resistance of battery is continually changing, and
Its charging process includes two charging stages of constant current and constant pressure, i.e., uses constant current mode at charging initial stage, make the voltage of battery can
To rise rapidly;When cell voltage reaches desirable value, charging modes are become into constant voltage mode, maintenance voltage is stablized, makes to charge
Electric current is progressively smaller until cut-off current, so far charging complete.Such charging modes require the radio charged the battery
Energy Transmission system can provide constant electric current and voltage, not only can realize that cell safety reliably charges, while can also
To extend the service life and charge and discharge number of battery.
There are three types of the common method of induction type radio energy transmission system realization constant current constant voltage switching charging is current: one,
" Mickel Budhia, Grant A.Covic, John T.Boys, Design and Optimization of Circular
Magnetic Structures for Lumped Inductive Power Transfer Systems " proposes to use frequency conversion
Control method, even radio energy transmission system realizes constant pressure and constant current output respectively at different frequencies.But such method meeting
Cause frequency bifurcation, causes system job insecurity.Two, " Chen Guodong, non-contact electric energy transmission system constant current technology are ground
Study carefully " in point out, can secondary commutation output after be added DC-DC DC converter be adjusted, but this kind of method in order to avoid
The appearance of limit duty ratio is not suitable for load and changes very big situation, and newly-increased DC transfer circuit increases system bulk.
Three, close loop negative feedback control is introduced in circuit, proposes to use phase shift control in " Zhu Wang, the research of constant current constant voltage wireless charging system "
Method processed, but such method also will increase excessive device, promote control cost and complexity.
Summary of the invention
Goal of the invention: being directed to the above-mentioned prior art, proposes a kind of induction type radio for realizing constant current constant voltage output switching
Energy Transmission system, can realize the switching of charge mode in the case where frequency is constant.
Technical solution: a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, including send mould
Block, receiving module, constant current constant voltage switching module, the sending module include sequentially connected DC power supply, high-frequency inverter, original
Side compensation network, primary coil, the receiving module include sequentially connected secondary coil, secondary side compensation network, rectifying and wave-filtering
Circuit and load;The constant current constant voltage switching module include capacitor C, excitation coil L, switching switch S connect the series connection to be formed
Circuit further includes the controller K of driving source and the switching switch S;Wherein, the excitation coil L and primary coil share
Primary side magnetic core, the excitation coil L and secondary coil pass through mutual inductance M2Coupling, the primary coil and secondary coil pass through mutual inductance
M1Coupling;The primary coil is in working frequency ω0Under flow through constant current.
Further, the series loop of the constant current constant voltage switching module is connected in parallel on to the output of the high-frequency inverter
End, i.e., using the output of the high-frequency inverter as driving source, and the capacitor C and excitation coil L are in system operating frequency
Lower resonance.
Further, the constant current constant voltage switching module further includes high-frequency inverter H, by the constant current constant voltage switching module
Series loop be connected in parallel on the output end of the high-frequency inverter H, the input terminal of the high-frequency inverter H is connected in parallel on the direct current
The output end of power supply will be used as driving source, and the capacitor C after the DC power supply and high-frequency inverter H cascade
With excitation coil L under system operating frequency resonance.
Further, the series loop of the constant current constant voltage switching module is shorted, and excitation coil L and the primary coil are logical
Cross mutual inductance M3Coupling passes through mutual inductance M3Induced potential is generated as driving source in excitation coil, and the capacitor C and excitation
Coil L resonance under system operating frequency.
Further, the primary coil is in series with passive element Z, and the constant current constant voltage switching module is connected in parallel on passive member
The both ends part Z, and the capacitor C of the constant current constant voltage switching module, excitation coil L and passive element Z are under system operating frequency
Resonance.
Further, the series loop of the constant current constant voltage switching module is shorted, and one of node and primary coil
One end connection, the excitation coil of the primary coil and the constant current constant voltage switching module is coupling inductance, mutual inductance M3, and
And the capacitor C and excitation coil the L resonance under system operating frequency.
Further, the sending module further includes inductance L1, the inductance L1It is connected in series with primary coil, the perseverance
It flows in the series loop of constant pressure switching module and is also in series with inductance L2, the inductance L1With inductance L2For coupling inductance, mutual inductance is
M3, and the capacitor C of the constant current constant voltage switching module, excitation coil L and inductance L2The resonance under system operating frequency.
Further, the primary side compensation network is located at the compensating electric capacity C in constant current branch1Parameter meets input impedance angleWherein, ZinFor input impedance, ImExpression takes imaginary part, ReExpression takes real part.
Further, the switching switch S is MOSFET or IGBT or thyristor.
Further, realize primary coil in working frequency ω by way of control or compensation network transformation0It flows down
Constant current is crossed, the compensation network mapping mode is using voltage source excitation series connection primary side compensation network, and wherein primary side compensates net
Network is LCC structure or CL structure or CLC structure or LCL structure or LC structure, and the pair side compensation network is LCC structure or LCL
Structure or S structure.
The utility model has the advantages that the present invention proposes a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching,
Only the constant current constant voltage switching circuit that a capacitor, a switch and a coil form, circuit knot need to be added in primary circuit
Structure is simple, at low cost.The switching of simple control switch is only needed when work, so that it may realize cutting for circuit output constant current constant voltage
It changes, control is simple, convenient, and reliable, and complicated control strategy, is not communicated without primary circuit and primary circuit.
And system can export the constant current and constant voltage unrelated with load under same working frequency, meet battery initial stage constant current
Charging, the requirement of later period constant-voltage charge.System works under a Frequency point, is not in frequency bifurcation, system work
Stablize.
Detailed description of the invention
Fig. 1 is a kind of induction type radio energy transmission system topological circuit schematic diagram for realizing constant current constant voltage output switching;
Fig. 2 is the main composition schematic diagram of existing wireless charging system;
Fig. 3 is the available compensation network circuit diagram of primary side of the present invention;Wherein attached drawing 3a is LC compensation network schematic diagram;
Attached drawing 3b is CL compensation network schematic diagram;Attached drawing 3c is CLC compensation network schematic diagram;Attached drawing 3d is LCL compensation network schematic diagram;
Attached drawing 3e is LCC compensation network schematic diagram;
Fig. 4 is the schematic diagram of the embodiment of the present invention one;
Fig. 5 is the Fundamental Wave Equivalent Circuit schematic diagram of Fig. 4;
Fig. 6 is the Simulation results constant current output characteristic curve of embodiment one;
Fig. 7 is the Simulation results constant voltage output characteristic curve of embodiment one;
Fig. 8 is the schematic diagram of the embodiment of the present invention two;
Fig. 9 is the Fundamental Wave Equivalent Circuit schematic diagram of Fig. 8;
Figure 10 is the schematic diagram of the embodiment of the present invention three;
Figure 11 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 10;
Figure 12 is the schematic diagram of the embodiment of the present invention four;
Figure 13 is the Fundamental Wave Equivalent Circuit schematic diagram of constant current constant voltage switching module in Figure 12;
Figure 14 is the schematic diagram of the embodiment of the present invention five;
Figure 15 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 14;
Figure 16 is the schematic diagram of embodiment six of the present invention;
Figure 17 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 16;
Figure 18 is the schematic diagram of the embodiment of the present invention seven;
Figure 19 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 18;
Figure 20 is the schematic diagram of the embodiment of the present invention eight;
Figure 21 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 20;
Figure 22 is the schematic diagram of the embodiment of the present invention nine
Figure 23 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 22;
Figure 24 is the schematic diagram of the embodiment of the present invention ten;
Figure 25 is the Fundamental Wave Equivalent Circuit schematic diagram of constant current constant voltage switching module in Figure 24;
Figure 26 is the schematic diagram of the embodiment of the present invention 11;
Figure 27 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 26;
Figure 28 is the schematic diagram of the embodiment of the present invention 12;
Figure 29 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 28;
Figure 30 is the schematic diagram of the embodiment of the present invention 13;
Figure 31 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 30;
Figure 32 is the schematic diagram of the embodiment of the present invention 14;
Figure 33 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 32;
Figure 34 is the schematic diagram of the embodiment of the present invention 15;
Figure 35 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 34;
Figure 36 is the schematic diagram of the embodiment of the present invention 16;
Figure 37 is the Fundamental Wave Equivalent Circuit schematic diagram of constant current constant voltage switching module point in Figure 36;
Figure 38 is the schematic diagram of the embodiment of the present invention 17;
Figure 39 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 38;
Figure 40 is the schematic diagram of the embodiment of the present invention 18;
Figure 41 is the Fundamental Wave Equivalent Circuit schematic diagram of Figure 40;
Primary symbols title in figure: 1-DC power supply, 2-high-frequency inverters, 3-primary side compensation networks, 4-is primary
Coil, 5-secondary coils, 6-secondary side compensation networks, 7-rectifying and wave-filtering networks, 8-loads, 9-constant current constant voltage switching modules,
Series capacitance in C-constant current constant voltage switching module, the excitation coil in L-constant current constant voltage switching module, S-switching switch,
K-controller,Fundamental wave equivalent AC voltage, L in-constant current constant voltage switching modulef1- primary side series compensation inductance, Cf1- former
Side Shunt compensation capacitor, C1- primary side series compensation capacitance, Lp- primary coil, Ls- secondary coil, C2- secondary side series compensation
Capacitor, Cf2- secondary side Shunt compensation capacitor, Lf2- secondary side series compensation inductance, R-load resistance, Vin- DC power supply,—
Inversion outlet side fundamental wave equivalent voltage,- inversion outlet side fundamental wave equivalent current,- flow through Lf1Fundamental wave equivalent current,- flow through LpFundamental wave equivalent current,- flow through LsFundamental wave equivalent current,- rectification input side fundamental wave equivalent current,- rectification input side fundamental wave equivalent voltage,- flow through the fundamental wave equivalent current of L, Io- output electric current, Vo- output voltage,
RE- current rectifying and wave filtering circuit equivalent load resistance.
Specific embodiment
Further explanation is done to the present invention with reference to the accompanying drawing.
As shown in Figure 1, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, including send mould
Block, receiving module, constant current constant voltage switching module.Sending module point includes sequentially connected DC power supply 1, high-frequency inverter 2, original
Side compensation network 3, primary coil 4, receiving module include sequentially connected secondary coil 5, secondary side compensation network 6, rectifying and wave-filtering
Circuit 7 and load 8.Constant current constant voltage switching module includes that capacitor C, excitation coil L, switching switch S connect the series connection to be formed time
Road further includes driving source and the controller K for switching switch S.Wherein, excitation coil L and primary coil 4 share primary side magnetic core,
Excitation coil L and secondary coil 5 pass through mutual inductance M2Coupling;Primary coil 4 is in working frequency ω0Under flow through constant current, capacitor C
It can be in resonance under system operating frequency with excitation coil L.
To improve system effectiveness, system is generally operational near resonant frequency point, and resonant inductance electric current near sinusoidal then may be used
To use fundamental wave approximate analysis method, its fundametal compoment is all used to substitute the variable in resonant network.High-frequency inverter is exported etc.
Effect is an alternating-current voltage sourceWhen current rectifying and wave filtering circuit is continuously turned on, the bridge arm mid-point voltage and electric current of rectifier bridge are always
Same phase, current rectifying and wave filtering circuit are equivalent to a load resistance RE, meet RE=8/ π2RL, RLFor load resistance.Wherein high-frequency inversion
There are many optional circuit of device 2, including recommend, half-bridge, full-bridge circuit etc., and the optional circuit of current rectifying and wave filtering circuit 7 is also very much, including
Bridge rectifier, full-wave rectification, halfwave rectifier, times stream rectification, voltage multiplying rectifier etc..
The present invention realizes primary coil 4 in working frequency ω by way of control or compensation network transformation0Under flow through
Constant current, compensation network mapping mode is using voltage source excitation series connection primary side compensation network 3.Primary side in the present invention compensates net
Network can be LC, CL, CLC, LCL, LCC structure, specific as shown in Fig. 3.Next will using LCC as primary side compensation network,
LCC, LCL, S are followed successively by secondary side compensation network, and the present invention is explained in detail by 18 embodiments.
Wherein embodiment 1 is one group to embodiment 6, and the former secondary side compensation network of their circuit topological structure is LCC knot
Structure;Embodiment 7 is one group to embodiment 12, their circuit topological structure primary side compensation network is LCC structure, and secondary side compensates net
Network is LCL structure;Embodiment 13 is one group to embodiment 18, their circuit topological structure primary side compensation network is LCC structure,
Secondary side compensation network is S structure.Six embodiments in each group, which are specifically distinguished, is the specific of its constant pressure and flow switching circuit
Structure and different from main circuit connection type.
Embodiment 1
As shown in figure 4, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, including direct current
Source Vin, high-frequency inverter 2, primary side compensation network 3, primary coil Lp, secondary coil Ls, secondary side compensation network 6, rectifying and wave-filtering electricity
Road 7 and load 8, further include constant current constant voltage switching module 9.Wherein primary side compensation network 3 is LCC compensation, compensating electric capacity C1With it is first
Grade coil LpAfter series connection with Cf1Be connected in parallel, then with compensation inductance Lf1It is whole to export direct phase simultaneously with inverter bridge after series connection
Connection.Secondary side compensation network 6 is also compensated using LCC, secondary coil LsWith compensating electric capacity C2With connect after with Cf2It is connected in parallel, then with
Compensate inductance Lf2It is connected in series, Lf2Output be connected to current rectifying and wave filtering circuit 7, primary coil LpWith secondary coil LsBetween by mutual
Feel M1Coupling.
Constant current constant voltage switching module 9 connects the series loop to be formed including capacitor C, excitation coil L, switching switch S, motivates
Coil L and secondary coil LsBetween pass through mutual inductance M2Coupling, switching switch S are connected with controller K.Constant current constant voltage switching module 9 is also wrapped
Include driving source, in the present embodiment, series loop is connected in parallel on the output end of high-frequency inverter 2, i.e., makees the output of high-frequency inverter 2
For driving source.Switching switch S switches for switching two kinds of operating modes of wireless power transmission topology constant current output and constant voltage output
The cut-off/close of switch S is controlled by controller K, and switching switch S is MOSFET or IGBT or thyristor.Wherein, capacitor C is one
A capacitor or the series connection of multiple inductance capacitances and/or parallel connection.
Fig. 5 gives the Fundamental Wave Equivalent Circuit of Fig. 4, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output electric current of topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy Basis Theory of Circuitry
It can push away, resonance frequency omega0Under, the output voltage of induction type wireless power transmission topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
In addition, the ZVS in order to realize primary side switch pipe, improves high-frequency inverter efficiency, needs design compensation parameter C1Make
Obtain input impedance ZinFor weak perceptionI.e. corresponding input impedance angleWherein, Im
Expression takes imaginary part, ReExpression takes real part, and abbreviation can obtain C1Capacitance should design satisfaction:
Formula (1), (2), (3), in (4), ω0For the resonance angular frequency of system.
In the present embodiment by controller K control switching switch S shutdown/it is open-minded, can be realized constant current/constant voltage export
Switching.
It, can be by calculating one group of design parameter of design: L in the case where meeting conditions above in the present embodimentf1For 46.1 μ
H、Cf1For 76.05nF, C1For 7.5nF, C 10.02nF, Lf2For 46.1 μ H, Cf2For 76.05nF, C2For 11.5nF, Lp、LsWith L
Equal is 350 μ H, and coefficient of coup k1With k2It is 0.2, input DC power VinFor 400V, load resistance is by 5~40 Ω
Variation.Parameter is substituted into built circuit to emulate, simulation result is as shown in Figure 6, Figure 7.
When Fig. 6 is that switch disconnects, output electric current exports electric current at this time and is basically unchanged with the curve for changing and changing is loaded;
Fig. 7 is when closing the switch, and output voltage changes with load and the curve of variation, and output voltage is basically unchanged at this time.
Therefore it can find out from Fig. 6 Fig. 7, by the cut-off/close of control switching switch S, can control induction type wireless charging system
System realizes constant current constant voltage switching.
Embodiment 2
As shown in figure 8, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 1
Difference be only that: constant current constant voltage switching module further includes high-frequency inverter H, simultaneously by the series loop of constant current constant voltage switching module
It is associated in the output end of high-frequency inverter H, the input terminal of high-frequency inverter H is connected in parallel on the output end of DC power supply 1, i.e., by direct current
Driving source is used as after source 1 and high-frequency inverter H cascade.
Fig. 9 gives the Fundamental Wave Equivalent Circuit of Fig. 8, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output electric current of topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy Basis Theory of Circuitry
It can push away, resonance frequency omega0Under, the output voltage of induction type wireless power transmission topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
In addition, the ZVS in order to realize primary side switch pipe, improves high-frequency inverter efficiency, design compensation parameter C1 is needed to make
Obtain input impedance ZinFor weak perceptionI.e. corresponding input impedance angleAbbreviation can obtain
C1Capacitance should design satisfaction:
Formula (5), (6), (7), in (8), ω0For the resonance angular frequency of system.
In the present embodiment by controller K control switching switch S shutdown/it is open-minded, can be realized constant current/constant voltage export
Switching.
Embodiment 3
As shown in Figure 10, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 1
Difference be only that: the series loop of constant current constant voltage switching module is shorted, the excitation coil L of constant current constant voltage switching module and primary
Coil 4 passes through mutual inductance M3Coupling passes through mutual inductance M3Induced potential is generated as driving source in excitation coil.
Figure 11 gives the Fundamental Wave Equivalent Circuit of Figure 10, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output electric current of topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy circuit base
This theory can push away, resonance frequency omega0Under, the output voltage of induction type wireless power transmission topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
In addition, the ZVS in order to realize primary side switch pipe, improves high-frequency inverter efficiency, needs design compensation parameter C1Make
Obtain input impedance ZinFor weak perceptionI.e. corresponding input impedance angleAbbreviation can obtain
C1Capacitance should design satisfaction:
Formula (9), (10), (11), in (12), ω0For the resonance angular frequency of system.
In the present embodiment by controller K control switching switch S shutdown/it is open-minded, can be realized constant current/constant voltage export
Switching.
Embodiment 4
As shown in figure 12, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 1
Difference be only that: primary coil 4 is in series with passive element Z, and constant current constant voltage switching module is connected in parallel on the both ends passive element Z, and
And capacitor C, excitation coil L and the passive element Z of constant current constant voltage switching module resonance under system operating frequency.
It should be noted that passive element Z is the Rong Shike in the series loop of constant current constant voltage switching module when appearance
To omit, passive element Z has shared the compensating electric capacity C that primary side compensation network 3 is located in constant current branch in the present embodiment1.Specifically
: the excitation coil L of constant current constant voltage switching module is connected in parallel on the compensating electric capacity C that primary side compensation network 3 is located in constant current branch1's
Both ends, excitation coil L and secondary coil LsBetween pass through mutual inductance M2Coupling.
Figure 13 gives the Fundamental Wave Equivalent Circuit of Figure 12, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output electric current of topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForIt is managed substantially by circuit
By can push away, resonance frequency omega0Under, output voltage is unrelated with load resistance, exports as constant-voltage characteristic.
In formula (13), (14), ω0For the resonance angular frequency of system.
In this example by controller K control switching switch S shutdown/it is open-minded, can be realized constant current/constant voltage export cut
It changes.
Embodiment 5
As shown in figure 14, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 1
Difference be only that: the series loop of constant current constant voltage switching module is shorted, and one end of one of node and primary coil 4 connects
It connects, the excitation coil L of primary coil 4 and constant current constant voltage switching module is coupling inductance, mutual inductance M3;Excitation coil L and secondary
Coil LsBetween pass through mutual inductance M2Coupling.
Figure 15 gives the Fundamental Wave Equivalent Circuit of Figure 14.Resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output electric current of topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy circuit base
This theory can push away, resonance frequency omega0Under, the output voltage of induction type wireless power transmission topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
In addition, the ZVS in order to realize primary side switch pipe, improves high-frequency inverter efficiency, design compensation parameter C1 is needed to make
Obtain input impedance ZinFor weak perceptionI.e. corresponding input impedance angleAbbreviation can obtain
C1Capacitance should design satisfaction:
Formula (15), (16), (17), in (18), ω0For the resonance angular frequency of system.
In this example by controller K control switching switch S shutdown/it is open-minded, can be realized constant current/constant voltage export cut
It changes.
Embodiment 6
As shown in figure 16, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 1
Difference be only that: sending module further includes inductance L1, inductance L1It is connected in series with primary coil 4, constant current constant voltage switching module
Inductance L is also in series in series loop2, inductance L1With inductance L2For coupling inductance, mutual inductance M3;Excitation coil L and secondary coil
LsBetween pass through mutual inductance M2Coupling.
Figure 17 gives the Fundamental Wave Equivalent Circuit of Figure 16.Resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output electric current of topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy circuit base
This theory can push away, resonance frequency omega0Under, the output voltage of induction type wireless power transmission topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
In addition, the ZVS in order to realize primary side switch pipe, improves high-frequency inverter efficiency, design compensation parameter C1 is needed to make
Obtain input impedance ZinFor weak perceptionI.e. corresponding input impedance angleAbbreviation can obtain
C1Capacitance should design satisfaction:
Formula (19), (20), (21), in (22), ω0For the resonance angular frequency of system.
In this example by controller K control switching switch S shutdown/it is open-minded, can be realized constant current/constant voltage export cut
It changes.
Embodiment 7
As shown in figure 18, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 1
Difference be only that: secondary side compensation network 6 is compensated using LCL, secondary coil LsWith Cf2Be connected in parallel, then with compensation inductance Lf2String
Connection connection, Lf2Output be connected to current rectifying and wave filtering circuit 7.
Figure 19 gives the Fundamental Wave Equivalent Circuit of Figure 18, and resonant element parameter meets condition in the present embodiment:
The handoff procedure and compensating parameter C of the constant current/constant voltage output of the present embodiment1Design it is same as Example 1.
Embodiment 8
As shown in figure 20, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 2
Difference be only that: secondary side compensation network 6 is compensated using LCL, secondary coil LsWith Cf2Be connected in parallel, then with compensation inductance Lf2String
Connection connection, Lf2Output be connected to current rectifying and wave filtering circuit 7.
Figure 21 gives the Fundamental Wave Equivalent Circuit of Figure 20, and resonant element parameter meets in the present embodiment:
The handoff procedure and compensating parameter C of the constant current/constant voltage output of the present embodiment1Design it is same as Example 2.
Embodiment 9
As shown in figure 22, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 3
Difference be only that: secondary side compensation network 6 is compensated using LCL, secondary coil LsWith Cf2Be connected in parallel, then with compensation inductance Lf2String
Connection connection, Lf2Output be connected to current rectifying and wave filtering circuit 7.
Figure 23 gives the Fundamental Wave Equivalent Circuit of Figure 22, and resonant element parameter meets in the present embodiment:
The handoff procedure and compensating parameter C of the constant current/constant voltage output of the present embodiment1Design it is same as Example 3.
Embodiment 10
As shown in figure 24, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 4
Difference be only that: secondary side compensation network 6 is compensated using LCL, secondary coil LsWith Cf2Be connected in parallel, then with compensation inductance Lf2String
Connection connection, Lf2Output be connected to current rectifying and wave filtering circuit 7.
Figure 25 gives the Fundamental Wave Equivalent Circuit of Figure 24, and resonant element parameter meets in the present embodiment:
The handoff procedure of the constant current/constant voltage output of the present embodiment is with same as Example 4.
Embodiment 11
As shown in figure 26, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 5
Difference be only that: secondary side compensation network 6 is compensated using LCL, secondary coil LsWith Cf2Be connected in parallel, then with compensation inductance Lf2String
Connection connection, Lf2Output be connected to current rectifying and wave filtering circuit 7.
Figure 27 gives the Fundamental Wave Equivalent Circuit of Figure 26, and resonant element parameter meets in the present embodiment:
The handoff procedure and compensating parameter C of the constant current/constant voltage output of the present embodiment1Design it is same as Example 5.
Embodiment 12
As shown in figure 28, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 6
Difference be only that: secondary side compensation network 6 is compensated using LCL, secondary coil LsWith Cf2Be connected in parallel, then with compensation inductance Lf2String
Connection connection, Lf2Output be connected to current rectifying and wave filtering circuit 7.
Figure 29 gives the Fundamental Wave Equivalent Circuit of Figure 28.Resonant element parameter meets in the present embodiment:
The handoff procedure and compensating parameter C of the constant current/constant voltage output of the present embodiment1Design it is same as Example 6.
Embodiment 13
As shown in figure 30, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 1
Difference be only that: secondary side compensation network 6 is compensated using S, secondary coil LsWith capacitor C2It is connected in series, capacitor C2Output connection
To current rectifying and wave filtering circuit 7, primary coil LpWith secondary coil LsBetween pass through mutual inductance M1Coupling.
Figure 31 gives the Fundamental Wave Equivalent Circuit of Figure 30, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output voltage of topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy Basis Theory of Circuitry
It can push away, resonance frequency omega0Under, the output electric current of induction type wireless power transmission topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
The compensating parameter C of the present embodiment1Design it is same as Example 1.It is opened in this example by controller K control switching
The shutdown of pass S/open-minded, can be realized the switching of constant voltage/constant current output.
Embodiment 14
As shown in figure 32, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 2
Difference be only that: secondary side compensation network 6 is compensated using S, secondary coil LsWith capacitor C2It is connected in series, capacitor C2Output connection
To current rectifying and wave filtering circuit 7, primary coil LpWith secondary coil LsBetween pass through mutual inductance M1Coupling.
Figure 33 gives the Fundamental Wave Equivalent Circuit of Figure 32, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output voltage of topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy Basis Theory of Circuitry
It can push away, resonance frequency omega0Under, the output electric current of induction type wireless power transmission topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
The compensating parameter C of the present embodiment1Design it is same as Example 2.It is opened in this example by controller K control switching
The shutdown of pass S/open-minded, can be realized the switching of constant voltage/constant current output.
Embodiment 15
As shown in figure 34, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 3
Difference be only that: secondary side compensation network 6 is compensated using S, secondary coil LsWith capacitor C2It is connected in series, capacitor C2Output connection
To current rectifying and wave filtering circuit 7, primary coil LpWith secondary coil LsBetween pass through mutual inductance M1Coupling.
Figure 35 gives the Fundamental Wave Equivalent Circuit of Figure 34, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output voltage of topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy circuit base
This theory can push away, resonance frequency omega0Under, the output electric current of induction type wireless power transmission topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
The compensating parameter C of the present embodiment1Design it is same as Example 3.It is opened in this example by controller K control switching
The shutdown of pass S/open-minded, can be realized the switching of constant voltage/constant current output.
Embodiment 16
As shown in figure 36, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 4
Difference be only that: secondary side compensation network 6 is compensated using S, secondary coil LsWith capacitor C2It is connected in series, capacitor C2Output connection
To current rectifying and wave filtering circuit 7, primary coil LpWith secondary coil LsBetween pass through mutual inductance M1Coupling.
Figure 37 gives the Fundamental Wave Equivalent Circuit of Figure 36 constant current constant voltage switching module point, resonant element parameter in the present embodiment
Meet:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output voltage of topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForIt is managed substantially by circuit
By can push away, resonance frequency omega0Under, output electric current is unrelated with load resistance, exports as constant-current characteristics.
In this example by controller K control switching switch S shutdown/it is open-minded, can be realized constant voltage/constant current export cut
It changes.
Embodiment 17
As shown in figure 38, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 5
Difference be only that: secondary side compensation network 6 is compensated using S, secondary coil LsWith capacitor C2It is connected in series, capacitor C2Output connection
To current rectifying and wave filtering circuit 7, primary coil LpWith secondary coil LsBetween pass through mutual inductance M1Coupling.
Figure 39 gives the Fundamental Wave Equivalent Circuit of Figure 38, and resonant element parameter meets in this hair embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output voltage of topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy circuit base
This theory can push away, resonance frequency omega0Under, the output electric current of induction type wireless power transmission topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
The compensating parameter C of the present embodiment1Design it is same as Example 5.It is opened in this example by controller K control switching
The shutdown of pass S/open-minded, can be realized the switching of constant voltage/constant current output.
Embodiment 18
As shown in figure 40, a kind of induction type radio energy transmission system for realizing constant current constant voltage output switching, with embodiment 5
Difference be only that: secondary side compensation network 6 is compensated using S, secondary coil LsWith capacitor C2It is connected in series, capacitor C2Output connection
To current rectifying and wave filtering circuit 7, primary coil LpWith secondary coil LsBetween pass through mutual inductance M1Coupling.
Figure 41 gives the Fundamental Wave Equivalent Circuit of Figure 40, and resonant element parameter meets in the present embodiment:
When switching switch S shutdown, can be pushed away by Basis Theory of Circuitry, resonance frequency omega0Under, induction type radio energy
Transmit the output voltage of topology are as follows:
As can be seen that output voltage is unrelated with load resistance at this time, export as constant-voltage characteristic.
When switching switch S closure, the equivalent AC excitation of constant current constant voltage switching moduleForBy circuit base
This theory can push away, resonance frequency omega0Under, the output electric current of induction type wireless power transmission topology are as follows:
As can be seen that output electric current is unrelated with load resistance at this time, export as constant-current characteristics.
The compensating parameter C of the present embodiment1Design it is same as Example 6.It is opened in this example by controller K control switching
The shutdown of pass S/open-minded, can be realized the switching of constant voltage/constant current output.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.