CN106532977A - Control device based on wireless power transmission system and wireless power transmission system - Google Patents
Control device based on wireless power transmission system and wireless power transmission system Download PDFInfo
- Publication number
- CN106532977A CN106532977A CN201611031461.0A CN201611031461A CN106532977A CN 106532977 A CN106532977 A CN 106532977A CN 201611031461 A CN201611031461 A CN 201611031461A CN 106532977 A CN106532977 A CN 106532977A
- Authority
- CN
- China
- Prior art keywords
- output
- signal
- module
- input
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
Abstract
The invention relates to a control device based on a wireless power transmission system and the wireless power transmission system. The system comprises a main circuit and a control device. The control device comprises a current detection module, a control module, a zero-crossing comparison output module, a square wave signal generation module and a drive signal generation module. When a transmitter circuit does not have current, the control device outputs an initial PWM signal and a corresponding control signal. The control device controls a switch tube according to the initial PWM signal, and the transmitter circuit has current. The control device stops responding to the PWM signal. Under the action of the corresponding control signal output by the control module, the square wave signal generation module generates a square wave signal of the same phase with the current according to a corresponding output signal of the zero-crossing comparison output module. The drive signal generation module generates a switch tube drive signal according to the square wave signal to control the switch tube. The control device is highly reliable.
Description
Technical field
The present invention relates to the control device and radio energy transmission system based on radio energy transmission system, belongs to radio
Can transmission field.
Background technology
Magnet coupled resonant type wireless electric energy transmission technology is using two electromagnetic systems with identical resonance frequency, in phase
When at a certain distance, resonance occurs with reception end-coil by transmitting terminal carries out the technology of energy transmission.
As shown in Fig. 1-a to 1-d, according to resonant capacitance and the connected mode of resonance coil, the topology of wireless power transmission
Structure generally has 4 kinds：Transmitting terminal series resonance, receiving terminal series resonance (S/S)；Transmitting terminal series resonance, receiving terminal parallel connection are humorous
Shake (S/P)；Transmitting terminal parallel resonance, receiving terminal series resonance (P/S)；Transmitting terminal parallel resonance, receiving terminal parallel resonance (P/
P)。
So, by above-mentioned, when wireless power transmission is carried out, the electric energy that transmitting terminal sends is alternating current, and
It is the electric energy by exporting after bridge circuit, complying with the condition being wirelessly transferred by corresponding control can be passed
It is defeated.Therefore, transmitting terminal can be divided into several situations：Direct current is by being output as controllable AC voltage, energy after bridge inverter main circuit
Wireless power transmission is carried out enough；Or, alternating current is output as controllable AC after passing through AC-AC circuits or AC-DC-AC circuits
Electricity, can carry out wireless power transmission, or other more complicated structures.
Fig. 2 gives a kind of embodiment, is that S/S types are topological, specially direct current input+transmitting terminal bridge circuit+series connection
The topological structure of resonance, wherein transmitting terminal bridge circuit are full bridge inverter, by controlling full bridge inverter breaker in middle pipe
Open and shut-off, make transmitting terminal coil working near its resonant frequency, so as to emitted energy, receiving terminal also has resonant frequency
Energy is received with transmitting terminal identical coil, so as to realize being wirelessly transferred for energy.
By controlling the drive signal that A, B, C, D tetra- switching tubes (metal-oxide-semiconductor or IGBT) are opened and turned off, control to send out
Penetrating end power circuit carries out power output, and receiving terminal receives corresponding electric power signal, realizes being wirelessly transferred for electric energy.But, mesh
The front control device for controlling this four switching tubes can only simply realize break-make control, and reliability is relatively low.
The content of the invention
It is an object of the invention to provide a kind of control device based on radio energy transmission system, to solve existing control
The relatively low problem of device reliability processed.Present invention simultaneously provides a kind of radio energy transmission system.
For achieving the above object, the solution of the present invention includes：A kind of control device based on radio energy transmission system, bag
Include：For gathering the current detection module of transmitting terminal loop current, for the control mould of output control signal and initial p WM signal
Block, Zero-cross comparator output module, square-wave signal generation module, and drive signal generation module, the current detection module are defeated
Go out to connect the control module and the Zero-cross comparator output module, the control module and the output of Zero-cross comparator output module connect
The corresponding input of the square-wave signal generation module is connect, the output end of the square-wave signal generation module connects the driving
The input of signal generator module；
When transmitting end loop does not have electric current, control module exports initial p WM signal and corresponding control signal, the control
Device processed has electric current according to the initial p WM signal come controlling switch pipe in making transmitting end loop, then, control device stops ringing
Should initial p WM signal, and control module output corresponding control signal in the presence of, square-wave signal generation module according to
The corresponding output signal of Zero-cross comparator output module produces the square-wave signal with current in phase position, the drive signal generation module
Switching tube drive signal is produced according to the square-wave signal, is controlled with switch tube.
The square-wave signal generation module includes starting of oscillation unit and phase locked-loop unit, and the control module and Zero-cross comparator are defeated
Go out the corresponding input of the module output connection starting of oscillation unit, the output end of the starting of oscillation unit connects the phaselocked loop list
The input of unit, the output end of the phase locked-loop unit are the output end of the square-wave signal generation module.
The starting of oscillation unit includes optocoupler U8 and four NAND gates, the positive pole connection power supply electricity of the former limit of the optocoupler U8
Source, the negative pole of the former limit of the optocoupler U8 are used to be input into the control signal, and power supply is grounded by the secondary of optocoupler U8, light
Two inputs of positive pole output connection NAND gate U7B of coupling U8 secondary, an input of NAND gate U7C connect the optocoupler
The positive pole of U8 secondary, another input are used to be input into the initial p WM signal, the output end connection NAND gate of NAND gate U7B
One input of U7A, another input of NAND gate U7A connect the output end of the Zero-cross comparator output module, and non-
The door output end of U7A is connected two inputs of NAND gate U7D respectively with the output end of NAND gate U7C, NAND gate U7D
Output end is the output end of the starting of oscillation unit；
In end loop is launched during no electric current, the control signal of the negative pole input of the former limit of the optocoupler U8 is high electricity
Flat, the output end of NAND gate U7D exports the signal consistent with initial p WM signal；When having electric current in end loop is launched, the light
The control signal of the negative pole input of the former limit of coupling U8 is low level, another input input of NAND gate U7C it is initial
Pwm signal forfeiture is acted on, and the output end of NAND gate U7D exports the signal consistent with the signal of Zero-cross comparator output module output.
The phase locked-loop unit includes chip CD4046 and chip CD4040, and the output end connection of the starting of oscillation unit is described
14 pin of chip CD4046,10 pin of the 4 pin output connection chip CD4040 of chip CD4046,7 pin of chip CD4040 are should
The output end of phase locked-loop unit, 7 pin of chip CD4040 connect 3 pin of chip CD4046；The chip CD4046 is phaselocked loop
Integrated chip, the chip CD4040 are 12 binary system serial counters.
The drive signal generation module is included for producing the first of the drive signal of driving switch pipe A and switching tube D
Driver element and the second driver element for producing the drive signal of driving switch pipe B and C.
The structure of first driver element and the second driver element is identical, and first driver element includes two successively
The CD4098 chips of connection, the output end of phase locked-loop unit connect the input of CD4098 chips, the 2nd CD4098 chips
Output end export the drive signal for driving switch pipe A and switching tube D；Wherein, CD4098 chips are touched for two-way monostable
Send out device.
The control device also includes tracking amplification module, and the current detection module is defeated by the tracking amplification module
Go out to connect the Zero-cross comparator output module.
A kind of radio energy transmission system, including main circuit and control device, the main circuit include the bridge-type of transmitting terminal
Circuit, the switching tube on the control device control connection bridge circuit, the control device include：Return for gathering transmitting terminal
The current detection module of road electric current, for output control signal and the control module of initial p WM signal, Zero-cross comparator output mould
Block, square-wave signal generation module, and drive signal generation module, the current detection module output connect the control module
With the Zero-cross comparator output module, the control module and the Zero-cross comparator output module output connection square-wave signal generation
The corresponding input of module, the output end of the square-wave signal generation module connect the input of the drive signal generation module
End；
When transmitting end loop does not have electric current, control module exports initial p WM signal and corresponding control signal, the control
Device processed has electric current according to the initial p WM signal come controlling switch pipe in making transmitting end loop, then, control device stops ringing
Should initial p WM signal, and control module output corresponding control signal in the presence of, square-wave signal generation module according to
The corresponding output signal of Zero-cross comparator output module produces the square-wave signal with current in phase position, the drive signal generation module
Switching tube drive signal is produced according to the square-wave signal, is controlled with switch tube.
The square-wave signal generation module includes starting of oscillation unit and phase locked-loop unit, and the control module and Zero-cross comparator are defeated
Go out the corresponding input of the module output connection starting of oscillation unit, the output end of the starting of oscillation unit connects the phaselocked loop list
The input of unit, the output end of the phase locked-loop unit are the output end of the square-wave signal generation module.
The starting of oscillation unit includes optocoupler U8 and four NAND gates, the positive pole connection power supply electricity of the former limit of the optocoupler U8
Source, the negative pole of the former limit of the optocoupler U8 are used to be input into the control signal, and power supply is grounded by the secondary of optocoupler U8, light
Two inputs of positive pole output connection NAND gate U7B of coupling U8 secondary, an input of NAND gate U7C connect the optocoupler
The positive pole of U8 secondary, another input are used to be input into the initial p WM signal, the output end connection NAND gate of NAND gate U7B
One input of U7A, another input of NAND gate U7A connect the output end of the Zero-cross comparator output module, and non-
The door output end of U7A is connected two inputs of NAND gate U7D respectively with the output end of NAND gate U7C, NAND gate U7D
Output end is the output end of the starting of oscillation unit；
In end loop is launched during no electric current, the control signal of the negative pole input of the former limit of the optocoupler U8 is high electricity
Flat, the output end of NAND gate U7D exports the signal consistent with initial p WM signal；When having electric current in end loop is launched, the light
The control signal of the negative pole input of the former limit of coupling U8 is low level, another input input of NAND gate U7C it is initial
Pwm signal forfeiture is acted on, and the output end of NAND gate U7D exports the signal consistent with the signal of Zero-cross comparator output module output.
The control device that the present invention is provided is exclusively used in radio energy transmission system, and under initial situation, transmitting end loop does not have
There is electric current, at this moment, control module exports initial p WM signal and corresponding control signal, and control device responds initial p WM to be believed
Number, the switching tube in bridge circuit is controlled, switching tube just has electric current in transmitting end loop, then control device in conducting
Stop responding the initial p WM signal, also, Zero-cross comparator output module is processed to the electric current in loop and exported corresponding
Signal, in corresponding output signal generation and loop of the square-wave signal generation module according to control module and Zero-cross comparator output module
Current in phase position square-wave signal, drive signal generation module according to square-wave signal produce switching tube drive signal, with split
Close pipe to be controlled.So, the control device can produce reliable drive signal and carry out driving switch pipe, it is ensured that radio energy
Transmission, and, do not have under the initial situation of electric current in transmitting terminal, carry out the conducting of trigger switch pipe first with initial pwm signal,
There is certain electric current in making loop, then, corresponding drive signal is generated according to the electric current in loop, so, in initial shape
Under state, the control device still can be controlled with switch tube, and reliability is higher, and makes bridge circuit be operated in perceptual area, subtracted
Little loss, improves efficiency.
Description of the drawings
Fig. 1-a are S/S topological structure schematic diagrames；
Fig. 1-b are S/P topological structure schematic diagrames；
Fig. 1-c are P/S topological structure schematic diagrames；
Fig. 1-d are P/P topological structure schematic diagrames；
Fig. 2 is the topological structure schematic diagram of direct current input+full-bridge inverting+series resonance；
Fig. 3 is control device overall structure block diagram；
Fig. 4 is to follow amplification circuit diagram；
Fig. 5 is Zero-cross comparator output circuit figure；
Fig. 6 is start-oscillation circuit figure；
Fig. 7 is phase-locked loop circuit figure；
Fig. 8 is that switching tube A, D drive generative circuit figure；
Fig. 9 is that switching tube B, C drive generative circuit figure；
Figure 10-a are driving accentuator figures corresponding with Fig. 8；
Figure 10-b are driving accentuator figures corresponding with Fig. 9；
Figure 11 is the oscillogram at several key points.
Specific embodiment
As shown in figure 1, the control device that the present invention is provided is exclusively used in radio energy transmission system, for the bridge in Fig. 2
Switching tube in formula circuit is controlled.As shown in figure 3, the control device includes：For gathering the electricity of transmitting terminal loop current
Stream detection module, for output control signal and the control module of initial p WM signal, Zero-cross comparator output module, square-wave signal
Generation module, and drive signal generation module, current detection module output link control module and Zero-cross comparator output module,
The corresponding input of control module and Zero-cross comparator output module output connection square wave signal generator module, square-wave signal are produced
The output end of module connects the input of drive signal generation module；When transmitting end loop does not have electric current, control module output
Initial p WM signal and corresponding control signal, control device return transmitting terminal according to the initial p WM signal come controlling switch pipe
There is electric current in road, then, control device stops responding the initial p WM signal, and in the corresponding control letter of control module output
In the presence of number, square-wave signal generation module is produced and current in phase position according to the corresponding output signal of Zero-cross comparator output module
Square-wave signal, drive signal generation module according to square-wave signal produce switching tube drive signal, be controlled with switch tube.
Based on above basic technical scheme, concrete structure of the following emphasis to each module, function and control device
The course of work be described in detail.
Due to being wireless power transmission, so transmitting terminal is not electrically connected with receiving terminal, therefore receiving terminal of not sampling here
Voltage x current situation, the only electric current in sampling transmitting end loop, the electric current can reflect the voltage and current feelings of receiving terminal
Condition.
The radio energy transmission system includes main circuit and control device, based on the characteristic of wireless power transmission, the main electricity
Road can also be referred to as magnetic coupling resonance circuit.Main circuit is used for being wirelessly transferred for electric energy, and its circuit structure is not unique, this enforcement
Example provides a kind of specific structure, as shown in Fig. 2 including the bridge circuit of transmitting terminal, control device is for transmitting terminal bridge-type
Switching tube in circuit is driven control.As transmitting terminal bridge circuit partly belongs to routine techniques, here just no longer to which
Illustrate, also, due to receiving terminal circuit the emphasis of non-invention, just no longer illustrate here.Below emphatically to control dress
Put and illustrate.
Conventional current detection module is provided with control device, such as current Hall sensor gathers transmitting terminal and returns
Electric current in road.
Control module in control device can be control chip, or the physical circuit for possessing identical function.Should
Control module sampling connection current detection module, also, the control module has two output ends, an output end output control letter
Number PWMCHANGE, another output end export initial p WM signal PWMIN.
In addition, current detection module also exports connection Zero-cross comparator output circuit, and, in current detection module and zero passage
Relatively it is additionally provided between output circuit and follows amplifying circuit, the current signal that current detection module is detected is through following and putting
After big, Zero-cross comparator output circuit is inputed to.
As shown in Figures 4 and 5, a kind of specific circuit structure is given, wherein, Fig. 4 is the circuit diagram for following amplifying circuit,
Fig. 5 is the circuit diagram of Zero-cross comparator output circuit.
As shown in figure 4, the homophase input of the current signal Isense output connection chip U5A of current detection module detection
End, after with amiable amplification, connects 2 pin of the chip U6 in Fig. 5 by the output end Jing resistance R18 of U5B.Chip U6 is to prolong
Slow time very short quick comparator, time delay are less than 100ms, and the upper rising edge of a pulse time is less than 10ns, such as adopts
The TL3016 of TI.In Zero-cross comparator output circuit, output is positive and negative corresponding with electric current afterwards compared with 0 level for current signal
Square-wave signal, as the square-wave signal also needs to carry out follow-up process, then be referred to as primary square-wave signal.
Square-wave signal generation module in control device includes start-oscillation circuit and phase-locked loop circuit, as shown in fig. 6, starting of oscillation is electric
Road includes optocoupler U8 and four NAND gates, and the positive pole connection power supply of the former limit of optocoupler U8, the negative pole of the former limit of optocoupler U8 are used
In input control signal PWMCHANGE, power supply is grounded by the secondary of optocoupler U8, the positive pole output connection of optocoupler U8 secondary
Two inputs of NAND gate U7B, an input of NAND gate U7C connect the positive pole of optocoupler U8 secondary, another input
For being input into initial p WM signal PWMIN, the output end of NAND gate U7B connects an input of NAND gate U7A, NAND gate U7A
Another input connect the output end of Zero-cross comparator output circuit, the output end of NAND gate U7A and the output of NAND gate U7C
End connects two inputs of NAND gate U7D respectively, and the output end of NAND gate U7D is the output end of starting of oscillation unit.
When wireless power transmission systems do not work, control signal PWMCHANGE of control module output is high level, is not exported just
Beginning pwm signal, i.e. PWMIN are always low level.Therefore, then the negative pole of the former limit of optocoupler U8 be high level, the secondary of optocoupler U8
It is not turned on, 5,6 pin of NAND gate U7B are high level, and its 4th pin is low level, and then the 1st pin of U7A is low level, and which the 3rd
Pin is high level, and the 11st pin of U7D is exported by the 8th pin PWMIN signal decidings of U7C, as PWMIN is low level, so,
11st pin of U7D is low level, and no drive signal in control circuit, the switching tube in main circuit are off state all the time.
When wireless power transmission systems work, and under initial situation, no electric current in main circuit transmitting end loop, control module
Control signal PWMCHANGE of output is high level, and exports initial p WM signal PWNIN, then the negative pole of the former limit of optocoupler U8 is defeated
Enter high level, the output end (the 11st pin) of NAND gate U7D exports the pwm signal consistent with initial p WM signal.When transmitting end loop
In when having electric current, control signal PWMCHANGE of control module output is low level, the control of the negative pole input of the former limit of optocoupler U8
Signal processed is low level, and the secondary of optocoupler U8 is turned on, and 5,6 pin of NAND gate U7B are low level, and its 4th pin is high level, and then
1st pin of U7A is high level, its 3rd pin output signal contrary with Zero-cross comparator output module；One input of U7C is defeated
Enter low level, then the initial p WM signal PWNIN of another input input of U7C is acted on regard to forfeiture, and U7C exports high level always,
Then the 11st pin of U7D exports the signal consistent with the signal of Zero-cross comparator output module output.
As shown in fig. 7, phase-locked loop circuit includes chip CD4046 and chip CD4040, the 11st pin connection of NAND gate U7D
14 pin of chip CD4046,10 pin of the 4 pin output connection chip CD4040 of chip CD4046,7 pin of chip CD4040 are should
The output end of phase-locked loop circuit, the signal of output is COMPIN.Wherein, chip CD4046 is the general integrated core of CMOS phaselocked loops
Piece, is characterized in supply voltage wide ranges (for 3V-18V), and input impedance is high (about 100M Ω), and dynamic power consumption is little, uses here
To realize frequency-tracking function；Chip CD4040 is 12 binary system serial counters, is constituted using CD4040 counters here
Frequency divider, with the function of realizing dividing.
C1, R2, R3 in adjustment CD4046 peripheral circuits can adjust the output highest frequency of CD4046, here will output
Highest frequency is adjusted to switch more than 4 times of highest frequency, and CD4040 is frequency dividing circuit, after 4 frequency dividings, by the of CD4040
7 pin export the signal COMPIN being close to incoming frequency.Also, the 3rd of the COMPIN signals also Jing resistance R7 input CD4046
Pin, CD4046 can adjust automatically its output frequency, COMPIN signals are adjusted to the signal phase being input into 14 pin of CD4046
Position is consistent, the pwm signal that dutycycle is 50%.COMPIN signals as lock the pwm signal after phase.
Signal COMPIN and the pwm signal that phase-locked loop circuit is input into after lock phase is synchronous, needs exist for generating phase
The drive signal of 10-20 degree after steric retardation, therefore CD4098 triggers will be used in follow-up drive signal generating unit point.
Fig. 8 and Fig. 9 are to drive generative circuit by two that CD4098 is constituted.One driving for being used to generate switching tube A, D
Signal, another is used for the drive signal for generating switching tube B, C, and the two drive the structure of generative circuit identical.For any
One circuit, as shown in figure 8, including two CD4098 chips being sequentially connected.Switching tube A, D adopt same driving, phaselocked loop
The COMPIN signals of circuit output are input into from the TR- of first trigger CD4098, using trailing edge triggering, electric capacity C6 and resistance
R7 arranges the time for postponing that drives, and the 6th pin output of first trigger CD4098 connects the 11 of second trigger CD4098
Pin, second trigger CD4098 carry out delay disposal again to signal, and R8 and C8 is arranged and driven width, finally defeated by 10 pin
Go out, drive signal of the dutycycle less than 50% (considering the dead drive time) after the drive signal as phase delay of output.In the same manner, scheme
9 is the driving generative circuit of switching tube B, C, and the TR+ of COMPIN signal slave flipflops is input into, using rising edge triggering, through two
After the process of individual CD4098 output phase postpone, while having the drive signal in certain dead band with the drive signal of A, D, as open
Close the drive signal of pipe B, C.Wherein, chip CD4098 is two-way monostable flipflop, is cascaded using two-way CD4098 here, structure
Into pulse signal delay circuit, to realize the delay of drive signal.
In addition, in order to strengthen driving force, two driving accentuators are provided with, and as shown in Figure 10-a and 10-b, switch
Pipe A, D drive the drive signal DRIAD0 that generative circuit is exported output drive signal DRIAD after driving accentuator reinforcement,
Opened and shut-off with driving switch pipe A, D.In the same manner, switching tube B, C drives the drive signal DRIBC0 of generative circuit output to pass through
Output drive signal DRIBC after driving accentuator to strengthen, is opened and shut-off with driving switch pipe B, C.
When wireless power transmission systems work, and under initial situation, no electric current in main circuit transmitting end loop, initial p WM
Signal plays a part of driving switch pipe, and switching tube realizes break-make, has electric current in making transmitting end loop.Have in transmitting end loop
While electric current or when electric current reaches certain value, corresponding drive signal is generated by electric current, detailed process is：
The current signal for detecting is sent to control module by current detection module, while being sent to during Fig. 4 follows amplifying circuit
Current signal is sent to the Zero-cross comparator output circuit of Fig. 5 by (Isense signals), following with after amplification for Jing high speed amplifiers
In, current signal is converted to a prescription ripple, and for just, subzero part is 0, i.e. output is positive and negative right with detection electric current for part above freezing
The square wave answered, 2 pin of the U7A that the square wave is entered in Fig. 6 start-oscillation circuits.
After control module receives electric current, the control signal PWMCHANGE signal of output is low level, and 11 pin of U7D are defeated
Go out signal with the square-wave signal that Zero-cross comparator output circuit is exported and be it is consistent, and by signal output to Fig. 7 phase-locked loop circuit
In enter horizontal lock, the consistent side of phase place and input signal is exported by the lock of chip CD4046 and after the frequency dividing of CD4040
Ripple signal.
Party's ripple is respectively fed to be processed in two driving generative circuits, two-way drive signal is exported, the driving is believed
The electrical angle of number lagging current signal 10-20, and dead band is carried, two groups of diagonal bridge arms for controlling transmitting terminal bridge circuit respectively are opened
Opening and shut-off for pipe is closed, makes the bridge circuit always work in perceptual area, it is achieved thereby that the Sofe Switch of switching tube starts, subtracted
Little loss, improves efficiency.
When the load in main circuit changes, that is, the impedance for loading there occurs change, at this moment equivalent to transmitting terminal, phase
When the impedance in transmitting end loop there occurs change, this influences whether the resonant parameter of transmitting terminal, so, the change energy of load
Enough make transmitting terminal resonant frequency change, be accomplished by control device to adjust the output of driving when resonant frequency changes, make
Transmitting end loop always works at weak perception interval, and now switching tube would operate in Sofe Switch state.In addition, transmitting end loop electricity
Stream can change with the voltage-phase of switching tube, and after current phase changes, voltage-phase can be locked by the control device all the time
In the state of one electrical angle of lagging current.
Figure 11 be the control device operationally, wherein the waveform at several key points.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, it is not limited to the concrete structure of each several part be given in above-described embodiment, to this area
For those of ordinary skill, teaching of the invention is designed the model of various modifications, formula, parameter and need not be spent
Creative work.Change that without departing from the principles and spirit of the present invention embodiment is carried out, modification, replace and
Modification is still fallen within protection scope of the present invention.
Claims (10)
1. a kind of control device based on radio energy transmission system, it is characterised in that
Including：For gathering the current detection module of transmitting terminal loop current, for output control signal and initial p WM signal
Control module, Zero-cross comparator output module, square-wave signal generation module, and drive signal generation module, the current detecting
The module output connection control module and the Zero-cross comparator output module, the control module and Zero-cross comparator output module
The corresponding input of the output connection square-wave signal generation module, the output end connection institute of the square-wave signal generation module
State the input of drive signal generation module；
When transmitting end loop does not have electric current, control module exports initial p WM signal and corresponding control signal, the control dress
Put according to the initial p WM signal come controlling switch pipe, in making transmitting end loop, have electric current, then, control device stops response should
Initial p WM signal, and in the presence of the corresponding control signal of control module output, square-wave signal generation module is according to zero passage
The corresponding output signal of relatively output module produces the square-wave signal with current in phase position, the drive signal generation module according to
The square-wave signal produces switching tube drive signal, is controlled with switch tube.
2. the control device based on radio energy transmission system according to claim 1, it is characterised in that
The square-wave signal generation module includes starting of oscillation unit and phase locked-loop unit, the control module and Zero-cross comparator output mould
The corresponding input of the block output connection starting of oscillation unit, the output end of the starting of oscillation unit connect the phase locked-loop unit
Input, the output end of the phase locked-loop unit are the output end of the square-wave signal generation module.
3. the control device based on radio energy transmission system according to claim 2, it is characterised in that
The starting of oscillation unit includes optocoupler U8 and four NAND gates, the positive pole connection power supply of the former limit of the optocoupler U8, institute
The negative pole for stating the former limit of optocoupler U8 is used to be input into the control signal, and power supply is grounded by the secondary of optocoupler U8, optocoupler U8
Two inputs of positive pole output connection NAND gate U7B of secondary, an input of NAND gate U7C connect the optocoupler U8 pairs
The positive pole on side, another input are used to be input into the initial p WM signal, output end connection NAND gate U7A of NAND gate U7B
One input, another input of NAND gate U7A connect the output end of the Zero-cross comparator output module, NAND gate U7A
Output end and the output end of NAND gate U7C be connected two inputs of NAND gate U7D, the output of NAND gate U7D respectively
Hold the output end for the starting of oscillation unit；
In end loop is launched during no electric current, the control signal of the negative pole input of the former limit of the optocoupler U8 is high level, with
The output end of not gate U7D exports the signal consistent with initial p WM signal；When having electric current in end loop is launched, the optocoupler U8
The control signal of negative pole input of former limit be low level, the initial p WM letter of another input input of NAND gate U7C
Mistake of howling at a funeral is acted on, and the output end of NAND gate U7D exports the signal consistent with the signal of Zero-cross comparator output module output.
4. the control device based on radio energy transmission system according to claim 2, it is characterised in that
The phase locked-loop unit includes chip CD4046 and chip CD4040, and the output end of the starting of oscillation unit connects the chip
14 pin of CD4046,10 pin of the 4 pin output connection chip CD4040 of chip CD4046,7 pin of chip CD4040 are the lock phase
The output end of ring element, 7 pin of chip CD4040 connect 3 pin of chip CD4046；The chip CD4046 is that phaselocked loop is integrated
Chip, the chip CD4040 are 12 binary system serial counters.
5. the control device based on radio energy transmission system according to claim 1, it is characterised in that
The drive signal generation module includes that for producing the drive signal of driving switch pipe A and switching tube D first drives
Unit and the second driver element for producing the drive signal of driving switch pipe B and C.
6. the control device based on radio energy transmission system according to claim 5, it is characterised in that
The structure of first driver element and the second driver element is identical, and first driver element includes that two are sequentially connected
CD4098 chips, the output end of phase locked-loop unit connects the input of CD4098 chips, the 2nd CD4098 chips it is defeated
Go out end output for the drive signal of driving switch pipe A and switching tube D；Wherein, CD4098 chips are two-way monostable flipflop.
7. the control device based on radio energy transmission system according to claim 1, it is characterised in that
The control device also includes tracking amplification module, and the current detection module is connected by the tracking amplification module output
Connect the Zero-cross comparator output module.
8. a kind of radio energy transmission system, including main circuit and control device, the main circuit include the bridge-type electricity of transmitting terminal
Road, the switching tube on the control device control connection bridge circuit, it is characterised in that the control device includes：For adopting
The current detection module of collection transmitting terminal loop current, for output control signal and the control module of initial p WM signal, zero passage ratio
Compared with output module, square-wave signal generation module, and drive signal generation module, the current detection module output connection are described
Control module and the Zero-cross comparator output module, the control module and the Zero-cross comparator output module output connection square wave
The corresponding input of signal generator module, the output end of the square-wave signal generation module connect the drive signal and produce mould
The input of block；
When transmitting end loop does not have electric current, control module exports initial p WM signal and corresponding control signal, the control dress
Put according to the initial p WM signal come controlling switch pipe, in making transmitting end loop, have electric current, then, control device stops response should
Initial p WM signal, and in the presence of the corresponding control signal of control module output, square-wave signal generation module is according to zero passage
The corresponding output signal of relatively output module produces the square-wave signal with current in phase position, the drive signal generation module according to
The square-wave signal produces switching tube drive signal, is controlled with switch tube.
9. radio energy transmission system according to claim 8, it is characterised in that
The square-wave signal generation module includes starting of oscillation unit and phase locked-loop unit, the control module and Zero-cross comparator output mould
The corresponding input of the block output connection starting of oscillation unit, the output end of the starting of oscillation unit connect the phase locked-loop unit
Input, the output end of the phase locked-loop unit are the output end of the square-wave signal generation module.
10. radio energy transmission system according to claim 9, it is characterised in that
The starting of oscillation unit includes optocoupler U8 and four NAND gates, the positive pole connection power supply of the former limit of the optocoupler U8, institute
The negative pole for stating the former limit of optocoupler U8 is used to be input into the control signal, and power supply is grounded by the secondary of optocoupler U8, optocoupler U8
Two inputs of positive pole output connection NAND gate U7B of secondary, an input of NAND gate U7C connect the optocoupler U8 pairs
The positive pole on side, another input are used to be input into the initial p WM signal, output end connection NAND gate U7A of NAND gate U7B
One input, another input of NAND gate U7A connect the output end of the Zero-cross comparator output module, NAND gate U7A
Output end and the output end of NAND gate U7C be connected two inputs of NAND gate U7D, the output of NAND gate U7D respectively
Hold the output end for the starting of oscillation unit；
In end loop is launched during no electric current, the control signal of the negative pole input of the former limit of the optocoupler U8 is high level, with
The output end of not gate U7D exports the signal consistent with initial p WM signal；When having electric current in end loop is launched, the optocoupler U8
The control signal of negative pole input of former limit be low level, the initial p WM letter of another input input of NAND gate U7C
Mistake of howling at a funeral is acted on, and the output end of NAND gate U7D exports the signal consistent with the signal of Zero-cross comparator output module output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031461.0A CN106532977B (en) | 2016-11-18 | 2016-11-18 | Control device and radio energy transmission system based on radio energy transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031461.0A CN106532977B (en) | 2016-11-18 | 2016-11-18 | Control device and radio energy transmission system based on radio energy transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106532977A true CN106532977A (en) | 2017-03-22 |
| CN106532977B CN106532977B (en) | 2019-03-26 |
Family
ID=58356131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611031461.0A Active CN106532977B (en) | 2016-11-18 | 2016-11-18 | Control device and radio energy transmission system based on radio energy transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106532977B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656133A (en) * | 2017-09-15 | 2018-02-02 | 许继电源有限公司 | A kind of wireless charging system transmitting terminal resonance current detection method and device |
| CN109728633A (en) * | 2019-01-17 | 2019-05-07 | 中国科学院电工研究所 | A kind of direct resonance frequency Phase Tracking control method of contactless power supply device |
| CN114787885A (en) * | 2020-01-07 | 2022-07-22 | Oppo广东移动通信有限公司 | Control circuit and control method of switching tube |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459351A (en) * | 2007-12-11 | 2009-06-17 | 财团法人工业技术研究院 | Non-contact electric power having built-in coupling detection device and coupling detection method thereof |
| CN101573851A (en) * | 2006-09-29 | 2009-11-04 | 捷通国际有限公司 | System and method for inductively charging a battery |
| US20120314745A1 (en) * | 2011-06-07 | 2012-12-13 | Fu Da Tong Technology Co., Ltd. | Method of time-synchronized data transmission in induction type power supply system |
| WO2015062554A1 (en) * | 2013-11-04 | 2015-05-07 | Huawei Technologies Co., Ltd. | Adjustable resonant apparatus, system and method for power converters |
| CN104980021A (en) * | 2014-04-11 | 2015-10-14 | 英飞凌科技奥地利有限公司 | System And Method For A Switched-mode Power Supply |
| JP2016032345A (en) * | 2014-07-29 | 2016-03-07 | 日立マクセル株式会社 | Contactless power transmission device |
| CN105576839A (en) * | 2014-10-27 | 2016-05-11 | 陕西高新能源发展有限公司 | Non-contact type miniwatt electric energy transmission system |
-
2016
- 2016-11-18 CN CN201611031461.0A patent/CN106532977B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573851A (en) * | 2006-09-29 | 2009-11-04 | 捷通国际有限公司 | System and method for inductively charging a battery |
| CN101459351A (en) * | 2007-12-11 | 2009-06-17 | 财团法人工业技术研究院 | Non-contact electric power having built-in coupling detection device and coupling detection method thereof |
| US20120314745A1 (en) * | 2011-06-07 | 2012-12-13 | Fu Da Tong Technology Co., Ltd. | Method of time-synchronized data transmission in induction type power supply system |
| WO2015062554A1 (en) * | 2013-11-04 | 2015-05-07 | Huawei Technologies Co., Ltd. | Adjustable resonant apparatus, system and method for power converters |
| CN104980021A (en) * | 2014-04-11 | 2015-10-14 | 英飞凌科技奥地利有限公司 | System And Method For A Switched-mode Power Supply |
| JP2016032345A (en) * | 2014-07-29 | 2016-03-07 | 日立マクセル株式会社 | Contactless power transmission device |
| CN105576839A (en) * | 2014-10-27 | 2016-05-11 | 陕西高新能源发展有限公司 | Non-contact type miniwatt electric energy transmission system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656133A (en) * | 2017-09-15 | 2018-02-02 | 许继电源有限公司 | A kind of wireless charging system transmitting terminal resonance current detection method and device |
| CN107656133B (en) * | 2017-09-15 | 2020-12-11 | 许继电源有限公司 | Method and device for detecting resonant current of transmitting end of wireless charging system |
| CN109728633A (en) * | 2019-01-17 | 2019-05-07 | 中国科学院电工研究所 | A kind of direct resonance frequency Phase Tracking control method of contactless power supply device |
| CN114787885A (en) * | 2020-01-07 | 2022-07-22 | Oppo广东移动通信有限公司 | Control circuit and control method of switching tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106532977B (en) | 2019-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103715886B (en) | Four-switch buck/boost mode converter control method and control circuit | |
| CN106532845B (en) | A kind of battery wireless charging system of pair side combined type compensation network | |
| CN103106168B (en) | Automatic serial port protection circuit | |
| CN106532977A (en) | Control device based on wireless power transmission system and wireless power transmission system | |
| CN105471286B (en) | Circuit of synchronous rectification, wireless charging system and synchronous rectification method | |
| CN109120072A (en) | S/SP type wireless charging system constant pressure and efficiency optimization control method | |
| CN105262154A (en) | Wireless charging system for underwater robot and control method of wireless charging system | |
| CN108656994A (en) | A kind of electric vehicle IPT systems of variable capacitance | |
| CN102281658A (en) | Synchronous signal acquiring circuit and control device for induction cooker and induction cooker | |
| CN206440970U (en) | Can Adaptive matching load high-voltage pulse power source | |
| CN102611287B (en) | Method for realizing full-bridge ZVS (Zero Voltage Switch) and ZCS (Zero Current Switch) drive and circuit thereof | |
| CN108055757B (en) | High-frequency synchronization system and synchrotron device comprising same | |
| CN103560599B (en) | Current sampling circuit and wireless charging emitting circuit | |
| CN105576952B (en) | STO control circuits and system | |
| CN103207599A (en) | Pulse communication and control system based on alternating current power supply return circuit | |
| CN102983776B (en) | Ultrasonic motor dual pulse-width modulation (PWM) power drive topological structure | |
| CN104682712A (en) | SCC (single-channel controller) structure applied to current source type LCL (lower control limit) high-frequency resonant converter | |
| CN109568788A (en) | A kind of output power adjusting circuit and frequency spectrograph | |
| CN203691617U (en) | Audio processing circuit with zero-crossing detection function | |
| CN203135826U (en) | Drive circuit of voltage type gate control device | |
| CN204615691U (en) | Be applied to the double-direction control drive circuit of energy storage inverter | |
| CN102508140B (en) | Method for realizing pulse check through digital circuit | |
| CN202696579U (en) | Phase-locked trigger circuit | |
| CN105471411B (en) | A kind of circuit system applied to pwm pulse shaping | |
| CN102522770A (en) | Transformer-less photovoltaic grid connection detection system and detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |