CN103441578B - A kind of resonance transmission circuit of wireless charging and control method thereof - Google Patents
A kind of resonance transmission circuit of wireless charging and control method thereof Download PDFInfo
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Abstract
The invention discloses a kind of resonance transmission circuit and control method thereof of wireless charging, belong to wireless communication field.Described circuit frequency division module, the first drive circuit, the second drive circuit, FM module and transmitter module; Described FM module comprises: single-chip microcomputer, digital regulation resistance and bistable multivibrator.Wherein, the first output of frequency division module is connected with the input of digital regulation resistance, and the second output of frequency division module is connected with the input of the first drive circuit; The output of the first drive circuit is connected with the input of transmitter module and digital regulation resistance is connected with single-chip microcomputer, first output of digital regulation resistance is connected with the input of bistable multivibrator, the output of bistable multivibrator is also connected with the input of the second drive circuit, and the output of the second drive circuit is connected with the input of transmitter module.The present invention regulates the resistance of digital regulation resistance by single-chip microcomputer, easy to operate, is beneficial to Systematical control, and has flexibility and practicality.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of resonance transmission circuit of wireless charging and control method thereof.
Background technology
Carrying out in high-power wireless charging process, the selection of resonance frequency has vital impact to the efficiency of transmission of wireless charging system and performance, selects suitable resonance frequency, and adopts this resonance frequency to realize high-power wireless charging.
In the prior art, by the resonance transmission circuit adjustment resonance frequency of wireless charging.Wherein, this circuit comprises frequency division module, flash drive circuit, low limit drive circuit, transmitter module and FM module.Wherein, FM module comprises a slide rheostat and bistable multivibrator.Manually adjust the resistance of slide rheostat, the resistance of slide rheostat is adjusted to default resistance, the frequency of the first via square-wave signal that frequency division module produces according to the resistance of slide rheostat by bistable multivibrator and the second road square-wave signal is adjusted to default resonance frequency, first via square-wave signal is exported to transmitter module by flash drive circuit, second road square-wave signal is exported to transmitter module by low limit drive circuit, first via square-wave signal and the second road square-wave signal are launched by transmitter module, to realize high-power wireless charging.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Manually can only adjust the resistance of the slide rheostat in the resonance transmission circuit of wireless charging, the resonance frequency of first via square-wave signal and the second road square-wave signal is adjusted to default resonance frequency according to the resistance of slide rheostat by bistable multivibrator, inconvenient operation, is unfavorable for Systematical control.
Summary of the invention
In order to make the problem of solution prior art, the invention provides a kind of resonance transmission circuit and control method thereof of wireless charging.Described technical scheme is as follows:
On the one hand, the invention provides a kind of resonance transmission circuit of wireless charging, described circuit comprises: frequency division module, the first drive circuit, the second drive circuit, FM module and transmitter module; Described FM module comprises: single-chip microcomputer, digital regulation resistance and bistable multivibrator;
Described frequency division module is for generation of clock signal, and described clock signal is divided into first via square-wave signal and the second road square-wave signal, first output of described frequency division module is connected with the input of described digital regulation resistance, and the second output of described frequency division module is connected with the input of described first drive circuit;
The output of described first drive circuit is connected with the input of described transmitter module, and described first drive circuit is used for described second road square-wave signal to export to described transmitter module;
Described digital regulation resistance is connected with described single-chip microcomputer, and the first output of described digital regulation resistance is connected with the input of described bistable multivibrator, described single-chip microcomputer is for regulating the resistance of described digital regulation resistance, and described bistable multivibrator is used for regulating described frequency division module to produce the frequency of first via square-wave signal and the frequency of the second road square-wave signal according to the resistance of described digital regulation resistance;
The output of described bistable multivibrator is also connected with the input of described second drive circuit, the output of described second drive circuit is connected with the input of described transmitter module, described second drive circuit is used for described first via square-wave signal to export to described transmitter module, and described transmitter module is used for described first via square-wave signal and the second road square-wave signal to launch;
Wherein, described first drive circuit comprises the first common mode inductance, the first predrive controller and the first driving transformer, and described second drive circuit comprises the second common mode inductance, the second predrive controller and the second driving transformer;
Second output of described frequency division module is connected with the input of described first common mode inductance;
The output of described first common mode inductance is connected with the input of described first predrive controller;
The output of described first predrive controller is connected with the input of described first driving transformer;
The output of described first driving transformer is connected with the input of described transmitter module;
The output of described bistable multivibrator is connected with the input of described second common mode inductance;
The output of described second common mode inductance is connected with the input of described second predrive controller;
The output of described second predrive controller is connected with the input of described second driving transformer;
The output of described second driving transformer is connected with the input of described transmitter module.
Further, described single-chip microcomputer is connected with described digital regulation resistance, comprising:
The input and output GPIO pin of described single-chip microcomputer and the built-in integrated circuit I of described digital regulation resistance
2c bus is connected.
Further, described first drive circuit is flash drive circuit, and described second drive circuit is low limit drive circuit; Or,
Described first drive circuit is low limit drive circuit, and described second drive circuit is flash drive circuit.
Further, described circuit also comprises electric capacity;
Second output of described digital regulation resistance is connected with one end of described electric capacity;
The other end ground connection of described electric capacity.
Further, described frequency division module comprises clock circuit and frequency divider;
Described clock circuit is for generation of described clock signal, and the output of described clock circuit is connected with the input of described frequency divider, and described frequency divider is used for described clock signal to be divided into described first via square-wave signal and described second road square-wave signal;
First output of described frequency divider is connected with the input of described digital regulation resistance; Second output of described frequency divider is connected with the input of described first drive circuit.
Further, described transmitter module comprises half-bridge radiating circuit and radio-frequency (RF) match output circuit;
The output of described first drive circuit is connected with the input of described half-bridge radiating circuit respectively with the output of described second drive circuit;
The output of described half-bridge radiating circuit is connected with described radio-frequency (RF) match output circuit.
On the other hand, provide a kind of method controlling the resonance transmission circuit of wireless charging, described method comprises:
Frequency division module clocking, and described clock signal is divided into first via square-wave signal and the second road square-wave signal, described first via square-wave signal and described second road square-wave signal are the equal and radiofrequency signal of phase 180 ° of frequency;
Single-chip microcomputer regulates the resistance of digital regulation resistance, and the resistance between the first output of described digital regulation resistance and the second output of described digital regulation resistance is adjusted to preset resistive value;
Bistable multivibrator regulates described frequency division module to produce the frequency of first via square-wave signal and the frequency of the second road square-wave signal according to the resistance of described digital regulation resistance, the frequency of the frequency of described first via square-wave signal and the second road square-wave signal is adjusted to default resonance frequency, and described first via square-wave signal is exported to the second drive circuit;
Described second road square-wave signal is exported to the first drive circuit by described frequency division module;
Described first via square-wave signal is exported to transmitter module by described second drive circuit;
Described second road square-wave signal is exported to described transmitter module by described first drive circuit;
Described first via square-wave signal and described second road square-wave signal are launched by described transmitter module, to realize high-power wireless charging;
Described second drive circuit comprises the second common mode inductance, the second predrive controller and the second driving transformer; Described first drive circuit comprises the first common mode inductance, the first predrive controller and the first driving transformer;
Described first via square-wave signal is exported to transmitter module by described second drive circuit, comprising:
Described second common mode inductance filters magnetic disturbance signal in described first via square-wave signal, and suppresses the electromagnetic wave outside radiation-emitting that described first via square-wave signal produces; Filtered described first via square-wave signal is exported to transmitter module by described second predrive controller and described second driving transformer;
Described second road square-wave signal is exported to described transmitter module by described first drive circuit, comprising:
Described first common mode inductance filters magnetic disturbance signal in described second road square-wave signal, and suppresses the electromagnetic wave outside radiation-emitting that described second road square-wave signal produces; Filtered described second road square-wave signal is exported to described transmitter module by described first predrive controller and described first driving transformer.
Further, described method also comprises:
Described first via square-wave signal and described second road square-wave signal export by described transmitter module.
In the embodiment of the present invention, the resonance transmission circuit of wireless charging comprises: frequency division module, the first drive circuit, the second drive circuit, FM module and transmitter module; Described FM module comprises: single-chip microcomputer, digital regulation resistance and bistable multivibrator.Regulated the resistance of digital regulation resistance by single-chip microcomputer in the present invention, resistance between first output of digital regulation resistance and the second output is adjusted to preset resistive value, the frequency of the first via square-wave signal that frequency division module produces according to the resistance of digital regulation resistance by bistable multivibrator and the second road square-wave signal is adjusted to default resonance frequency, first via square-wave signal is exported to transmitter module by flash drive circuit, second road square-wave signal is exported to transmitter module by low limit drive circuit, first via square-wave signal and the second road square-wave signal are launched by transmitter module, to realize high-power wireless charging.The resistance of digital regulation resistance is regulated by single-chip microcomputer, easy to operate, be beneficial to Systematical control.And there is flexibility and practicality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the resonance transmission circuit of a kind of wireless charging that the embodiment of the present invention 1 provides;
Fig. 2 is another structural representation of the resonance transmission circuit of a kind of wireless charging that the embodiment of the present invention 1 provides;
Fig. 3 is another structural representation of the resonance transmission circuit of a kind of wireless charging that the embodiment of the present invention 1 provides;
Fig. 4 is another structural representation of the resonance transmission circuit of a kind of wireless charging that the embodiment of the present invention 1 provides;
Fig. 5 is another structural representation of the resonance transmission circuit of a kind of wireless charging that the embodiment of the present invention 1 provides;
Fig. 6 is the control method flow chart of the resonance transmission circuit of a kind of wireless charging that the embodiment of the present invention 2 provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment 1
Embodiments provide a kind of resonance transmission circuit of wireless charging.See Fig. 1, wherein, this circuit comprises: frequency division module 101, first drive circuit 102, second drive circuit 103, FM module 104 and transmitter module 105; FM module 104 comprises: single-chip microcomputer 1041, digital regulation resistance 1042 and bistable multivibrator 1043;
Frequency division module 101 is for generation of clock signal, and clock signal is divided into first via square-wave signal and the second road square-wave signal, first output of frequency division module 101 is connected with the input of digital regulation resistance 1042, and the second output of frequency division module 101 is connected with the input of the first drive circuit 102;
The output of the first drive circuit 102 is connected with the input of transmitter module 105, and the first drive circuit 102 is for exporting to transmitter module 105 by the second road square-wave signal;
Digital regulation resistance 1042 is connected with single-chip microcomputer 1041, and the first output of digital regulation resistance 1042 is connected with the input of bistable multivibrator 1043, single-chip microcomputer 1041 is for regulating the resistance of digital regulation resistance 1042, and bistable multivibrator 1043 is for regulating frequency division module 101 to produce the frequency of first via square-wave signal and the frequency of the second road square-wave signal according to the resistance of digital regulation resistance 1042;
The output of bistable multivibrator 1043 is also connected with the input of the second drive circuit 103, the output of the second drive circuit 103 is connected with the input of transmitter module 105, second drive circuit 103 is for exporting to transmitter module 105 by first via square-wave signal, and transmitter module 105 is for launching first via square-wave signal and the second road square-wave signal.
Wherein, first via square-wave signal and the second road square-wave signal are the equal and radiofrequency signal of phase 180 ° of phase place.The frequency of first via square-wave signal and the second road square-wave signal, for regulating the frequency of first via square-wave signal and the second road square-wave signal, is adjusted to default resonance frequency by FM module.
Further, single-chip microcomputer 1041 is connected with digital regulation resistance 1042, comprising: the input and output GPIO pin of single-chip microcomputer 1041 and the built-in integrated circuit I of digital regulation resistance 1042
2c bus is connected.
Further, a kind of resonance transmission circuit of wireless charging is embodiments provided.See Fig. 2, wherein, this circuit comprises: frequency division module 101, first drive circuit 102, second drive circuit 103, FM module 104 and transmitter module 105; FM module 104 comprises: single-chip microcomputer 1041, digital regulation resistance 1042 and bistable multivibrator 1043, and this circuit also comprises: electric capacity 106.
Wherein, the second output of digital regulation resistance 1042 is connected with one end of electric capacity 106, the other end ground connection of electric capacity 106.
Wherein, single-chip microcomputer 1041 passes through I
2c bus goes the resistance regulating digital regulation resistance 1042, and the resistance between the first output of digital regulation resistance 1042 and the second output is adjusted to default resistance.Electric capacity is used for carrying out filtering to first via square-wave signal and the second road square-wave signal.
Wherein, the resistance preset can carry out arranging and changing as required.In embodiments of the present invention, the value of the resistance preset is not specifically limited.
Further, the first drive circuit 102 is flash drive circuit, and the second drive circuit 103 is low limit drive circuit; Or the first drive circuit 102 is low limit drive circuit, the second drive circuit 103 is flash drive circuit.
Wherein, flash is power supply, and low limit is ground; Flash drive circuit and low limit drive circuit are used to first via square-wave signal or the second road square-wave signal to export to transmitter module 105.
Wherein, when the first drive circuit 102 is flash drive circuit, when the second drive circuit 103 is low limit drive circuit, the resonance transmission circuit of wireless charging as shown in Figure 3.When the first drive circuit 102 is low limit drive circuit, when the second drive circuit 103 is flash drive circuit, the resonance transmission circuit of wireless charging as shown in Figure 4.
Further, a kind of resonance transmission circuit of wireless charging is embodiments provided.See Fig. 5, wherein, this circuit comprises: frequency division module 101, first drive circuit 102, second drive circuit 103, FM module 104 and transmitter module 105; FM module 104 comprises: single-chip microcomputer 1041, digital regulation resistance 1042 and bistable multivibrator 1043, electric capacity 106, and this circuit also comprises:
Frequency division module 101 comprises clock circuit 1011 and frequency divider 1012, clock circuit 1011 is for generation of clock signal, the output of clock circuit 1011 is connected with the input of frequency divider 1012, and frequency divider 1012 is for being divided into first via square-wave signal and the second road square-wave signal by clock signal; First output of frequency divider 1012 is connected with the input of digital regulation resistance 1042; Second output of frequency divider 1012 is connected with the input of the first drive circuit 102.
Wherein, clock circuit 1011 adopts the clock circuit 1011 with the 27.12MHZ of temperature compensation function.
Further, the first drive circuit 102 comprises the first common mode inductance 1021, first predrive controller 1022 and the first driving transformer 1023, and wherein, the second output of frequency division module 101 is connected with the input of the first common mode inductance 1021; The output of the first common mode inductance 1021 is connected with the input of the first predrive controller 1022; The output of the first predrive controller 1022 is connected with the input of the first driving transformer 1023; The output of the first driving transformer 1023 is connected with the input of transmitter module 105.
Wherein, the first common mode inductance 1021 is also the first common mode choke, for filtering magnetic disturbance signal in the second road square-wave signal, and suppresses the electromagnetic wave outside radiation-emitting that the second road square-wave signal produces.First predrive controller 1022 and the first driving transformer 1023 are for exporting to transmitter module 105 by the second road square-wave signal.
Further, the second drive circuit 103 comprises the second common mode inductance 1031, second predrive controller 1032 and the second driving transformer 1033; Wherein, the output of bistable multivibrator 1043 is connected with the input of the second common mode inductance 1031; The output of the second common mode inductance 1031 is connected with the input of the second predrive controller 1032; The output of the second predrive controller 1032 is connected with the input of the second driving transformer 1033; The output of the second driving transformer 1033 is connected with the input of transmitter module 105.
Wherein, the second common mode inductance 1031 is also the second common mode choke, for filtering magnetic disturbance signal in first via square-wave signal, and the electromagnetic wave outside radiation-emitting suppressing first via square-wave signal to produce.Second predrive controller 1032 and the second driving transformer 1033 are for exporting to transmitter module 105 by first via square-wave signal.
Further, transmitter module 105 comprises half-bridge radiating circuit 1051 and radio-frequency (RF) match output circuit 1052; Wherein.The output of the first drive circuit 102 is connected with the input of half-bridge radiating circuit 1051 respectively with the output of the second drive circuit 103; The output of half-bridge radiating circuit 1051 is connected with radio-frequency (RF) match output circuit 1052.
Wherein, half-bridge is a kind of equipment by modulator-demodulator, network being connected into communication link, does not need to transmit routing iinformation.Radio-frequency (RF) match refers to that the impedance between load and source reaches a kind of relation, and power or transmission can be made to be able to good carrying out.
Wherein, the second road square-wave signal is exported to half-bridge radiating circuit 1051 by the first drive circuit 102, and the second road square-wave signal is just carried out radio frequency output by half-bridge radiating circuit 1051 after impedance matching.First via square-wave signal is exported to half-bridge radiating circuit 1051 by the second drive circuit 103, and first via square-wave signal is just carried out radio frequency output by half-bridge radiating circuit 1051 after impedance matching.
In the embodiment of the present invention, the resonance transmission circuit of wireless charging comprises: frequency division module, the first drive circuit, the second drive circuit, FM module and transmitter module; FM module comprises: single-chip microcomputer, digital regulation resistance and bistable multivibrator.Regulated the resistance of digital regulation resistance by single-chip microcomputer in the present invention, resistance between first output of digital regulation resistance and the second output is adjusted to preset resistive value, the frequency of the first via square-wave signal that frequency division module produces according to the resistance of digital regulation resistance by bistable multivibrator and the second road square-wave signal is adjusted to default resonance frequency, first via square-wave signal is exported to transmitter module by flash drive circuit, second road square-wave signal is exported to transmitter module by low limit drive circuit, first via square-wave signal and the second road square-wave signal are launched by transmitter module, to realize high-power wireless charging.The resistance of digital regulation resistance is regulated by single-chip microcomputer, easy to operate, be beneficial to Systematical control.And there is flexibility and practicality.
Embodiment 2
Embodiments provide a kind of control method of resonance transmission circuit of wireless charging.See Fig. 6, wherein, the method comprises:
201: frequency division module clocking, and clock signal is divided into first via square-wave signal and the second road square-wave signal, first via square-wave signal and the second road square-wave signal are the equal and radiofrequency signal of phase 180 ° of frequency;
Wherein, frequency division module comprises clock circuit and frequency divider, and clock circuit adopts the clock circuit with the 27.12MHZ of temperature compensation function, and clock circuit produces the clock signal of 27.12MHZ.The clock signal of 27.12MHZ is divided into frequency to be first via square-wave signal and the second road square-wave signal of 13.56MHZ by frequency divider, first via square-wave signal is equal with the second road square-wave signal frequency is 13.56MHZ, and, first via square-wave signal and the second road square-wave signal phase 180 °.
202: single-chip microcomputer regulates the resistance of digital regulation resistance, and the resistance between the first output of digital regulation resistance and the second output of digital regulation resistance is adjusted to preset resistive value;
Wherein, the GPIO pin of single-chip microcomputer and the I of digital regulation resistance
2c bus is connected, and single-chip microcomputer and digital regulation resistance pass through I
2c bus communication.
203: bistable multivibrator regulates frequency division module to produce the frequency of first via square-wave signal and the frequency of the second road square-wave signal according to the resistance of digital regulation resistance, the frequency of the frequency of first via square-wave signal and the second road square-wave signal is adjusted to default resonance frequency, and first via square-wave signal is exported to the second drive circuit;
Wherein, default resonance frequency can carry out arranging and changing as required, and the value of the present invention to default resonance frequency is not specifically limited.
Wherein, in embodiments of the present invention, when carrying out wireless charging, single-chip microcomputer regulates the resistance of digital regulation resistance, resistance between first output of digital regulation resistance and the second output is adjusted to the first resistance preset, bistable multivibrator regulates frequency division module to produce the frequency of first via square-wave signal and the second road square-wave signal according to the resistance of digital regulation resistance, the frequency of the frequency of first via square-wave signal and the second road square-wave signal is adjusted to the first default resonance frequency, make impedance matching, to realize powerful wireless charging.When standby or when falling power, resistance between first output of digital regulation resistance and the second output is adjusted to the second resistance preset, bistable multivibrator regulates frequency division module to produce the frequency of first via square-wave signal and the second road square-wave signal according to the resistance of digital regulation resistance, the frequency of the frequency of first via square-wave signal and the second road square-wave signal is adjusted to the second default resonance frequency, impedance matching was lost efficacy, to reduce efficiency of transmission.
Wherein, the first resistance preset, the second resistance preset, first preset resonance frequency and the second default resonance frequency can carry out arranging and changing as required, and the present invention does not do concrete restriction.
204: the second road square-wave signal is exported to the first drive circuit by frequency division module;
First via square-wave signal is exported to transmitter module by 205: the second drive circuits;
Second road square-wave signal is exported to transmitter module by 206: the first drive circuits;
207: first via square-wave signal and the second road square-wave signal are launched by transmitter module, to realize high-power wireless charging.
Further, first via square-wave signal is exported to transmitter module by the second drive circuit, and the second road square-wave signal is exported to transmitter module by the first drive circuit, comprising:
Second road square-wave signal is carried out filtering by the first drive circuit, and filtered second road square-wave signal is exported to transmitter module; First via square-wave signal is carried out filtering by the second drive circuit, and filtered first via square-wave signal is exported to transmitter module.
Further, first via square-wave signal and the second road square-wave signal export by transmitter module.
In the embodiment of the present invention, the resonance transmission circuit of wireless charging comprises: frequency division module, the first drive circuit, the second drive circuit, FM module and transmitter module; FM module comprises: single-chip microcomputer, digital regulation resistance and bistable multivibrator.Regulated the resistance of digital regulation resistance by single-chip microcomputer in the present invention, resistance between first output of digital regulation resistance and the second output is adjusted to preset resistive value, the frequency of the first via square-wave signal that frequency division module produces according to the resistance of digital regulation resistance by bistable multivibrator and the second road square-wave signal is adjusted to default resonance frequency, first via square-wave signal is exported to transmitter module by flash drive circuit, second road square-wave signal is exported to transmitter module by low limit drive circuit, first via square-wave signal and the second road square-wave signal are launched by transmitter module, to realize high-power wireless charging.The resistance of digital regulation resistance is regulated by single-chip microcomputer, easy to operate, be beneficial to Systematical control.And there is flexibility and practicality.
It should be noted that: the resonance transmission circuit of the wireless charging that above-described embodiment provides is when wireless charging, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, internal structure by circuit is divided into different functional modules, to complete all or part of function described above.In addition, the resonance transmission circuit of the wireless charging that above-described embodiment provides and the embodiment of the method for wireless charging belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a resonance transmission circuit for wireless charging, is characterized in that, described circuit comprises: frequency division module, the first drive circuit, the second drive circuit, FM module and transmitter module; Described FM module comprises: single-chip microcomputer, digital regulation resistance and bistable multivibrator;
Described frequency division module is for generation of clock signal, and described clock signal is divided into first via square-wave signal and the second road square-wave signal, first output of described frequency division module is connected with the input of described digital regulation resistance, and the second output of described frequency division module is connected with the input of described first drive circuit;
The output of described first drive circuit is connected with the input of described transmitter module, and described first drive circuit is used for described second road square-wave signal to export to described transmitter module;
Described digital regulation resistance is connected with described single-chip microcomputer, and the first output of described digital regulation resistance is connected with the input of described bistable multivibrator, described single-chip microcomputer is for regulating the resistance of described digital regulation resistance, and described bistable multivibrator is used for regulating described frequency division module to produce the frequency of first via square-wave signal and the frequency of the second road square-wave signal according to the resistance of described digital regulation resistance;
The output of described bistable multivibrator is also connected with the input of described second drive circuit, the output of described second drive circuit is connected with the input of described transmitter module, described second drive circuit is used for described first via square-wave signal to export to described transmitter module, and described transmitter module is used for described first via square-wave signal and the second road square-wave signal to launch;
Wherein, described first drive circuit comprises the first common mode inductance, the first predrive controller and the first driving transformer, and described second drive circuit comprises the second common mode inductance, the second predrive controller and the second driving transformer;
Second output of described frequency division module is connected with the input of described first common mode inductance;
The output of described first common mode inductance is connected with the input of described first predrive controller;
The output of described first predrive controller is connected with the input of described first driving transformer;
The output of described first driving transformer is connected with the input of described transmitter module;
The output of described bistable multivibrator is connected with the input of described second common mode inductance;
The output of described second common mode inductance is connected with the input of described second predrive controller;
The output of described second predrive controller is connected with the input of described second driving transformer;
The output of described second driving transformer is connected with the input of described transmitter module.
2. circuit as claimed in claim 1, it is characterized in that, described single-chip microcomputer is connected with described digital regulation resistance, comprising:
The input and output GPIO pin of described single-chip microcomputer and the built-in integrated circuit I of described digital regulation resistance
2c bus is connected.
3. circuit as claimed in claim 1, is characterized in that,
Described first drive circuit is flash drive circuit, and described second drive circuit is low limit drive circuit; Or,
Described first drive circuit is low limit drive circuit, and described second drive circuit is flash drive circuit.
4. circuit as claimed in claim 1, it is characterized in that, described circuit also comprises electric capacity;
Second output of described digital regulation resistance is connected with one end of described electric capacity;
The other end ground connection of described electric capacity.
5. circuit as claimed in claim 1, it is characterized in that, described frequency division module comprises clock circuit and frequency divider;
Described clock circuit is for generation of described clock signal, and the output of described clock circuit is connected with the input of described frequency divider, and described frequency divider is used for described clock signal to be divided into described first via square-wave signal and described second road square-wave signal;
First output of described frequency divider is connected with the input of described digital regulation resistance; Second output of described frequency divider is connected with the input of described first drive circuit.
6. circuit as claimed in claim 1, is characterized in that,
Described transmitter module comprises half-bridge radiating circuit and radio-frequency (RF) match output circuit;
The output of described first drive circuit is connected with the input of described half-bridge radiating circuit respectively with the output of described second drive circuit;
The output of described half-bridge radiating circuit is connected with described radio-frequency (RF) match output circuit.
7. control a method for circuit described in any one of claim 1-6, it is characterized in that, described method comprises:
Frequency division module clocking, and described clock signal is divided into first via square-wave signal and the second road square-wave signal, described first via square-wave signal and described second road square-wave signal are the equal and radiofrequency signal of phase 180 ° of frequency;
Single-chip microcomputer regulates the resistance of digital regulation resistance, and the resistance between the first output of described digital regulation resistance and the second output of described digital regulation resistance is adjusted to preset resistive value;
Bistable multivibrator regulates described frequency division module to produce the frequency of first via square-wave signal and the frequency of the second road square-wave signal according to the resistance of described digital regulation resistance, the frequency of the frequency of described first via square-wave signal and the second road square-wave signal is adjusted to default resonance frequency, and described first via square-wave signal is exported to the second drive circuit;
Described second road square-wave signal is exported to the first drive circuit by described frequency division module;
Described first via square-wave signal is exported to transmitter module by described second drive circuit;
Described second road square-wave signal is exported to described transmitter module by described first drive circuit;
Described first via square-wave signal and described second road square-wave signal are launched by described transmitter module, to realize high-power wireless charging;
Described second drive circuit comprises the second common mode inductance, the second predrive controller and the second driving transformer; Described first drive circuit comprises the first common mode inductance, the first predrive controller and the first driving transformer;
Described first via square-wave signal is exported to transmitter module by described second drive circuit, comprising:
Described second common mode inductance filters magnetic disturbance signal in described first via square-wave signal, and suppresses the electromagnetic wave outside radiation-emitting that described first via square-wave signal produces; Filtered described first via square-wave signal is exported to transmitter module by described second predrive controller and described second driving transformer;
Described second road square-wave signal is exported to described transmitter module by described first drive circuit, comprising:
Described first common mode inductance filters magnetic disturbance signal in described second road square-wave signal, and suppresses the electromagnetic wave outside radiation-emitting that described second road square-wave signal produces; Filtered described second road square-wave signal is exported to described transmitter module by described first predrive controller and described first driving transformer.
8. method as claimed in claim 7, it is characterized in that, described method also comprises:
Described first via square-wave signal and described second road square-wave signal export by described transmitter module.
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| LLC谐振变换器交错并联技术的研究;刘伟丽;《万方学位论文》;20111130;第1-52页 * |
| 恒温晶体振荡器调频范围扩展研究;刘永波;《万方学位论文》;20090921;第1-65页 * |
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