CN106941284A - A kind of coupled resonance formula underwater wireless charging device and method - Google Patents

A kind of coupled resonance formula underwater wireless charging device and method Download PDF

Info

Publication number
CN106941284A
CN106941284A CN201710184643.XA CN201710184643A CN106941284A CN 106941284 A CN106941284 A CN 106941284A CN 201710184643 A CN201710184643 A CN 201710184643A CN 106941284 A CN106941284 A CN 106941284A
Authority
CN
China
Prior art keywords
control unit
coil
turn
frequency
frequency modulation
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
Application number
CN201710184643.XA
Other languages
Chinese (zh)
Other versions
CN106941284B (en
Inventor
汪洋
何志强
丁丽琴
张继良
李黎明
吴鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Graduate School Harbin Institute of Technology
Original Assignee
Shenzhen Graduate School Harbin Institute of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Graduate School Harbin Institute of Technology filed Critical Shenzhen Graduate School Harbin Institute of Technology
Priority to CN201710184643.XA priority Critical patent/CN106941284B/en
Publication of CN106941284A publication Critical patent/CN106941284A/en
Application granted granted Critical
Publication of CN106941284B publication Critical patent/CN106941284B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Near-Field Transmission Systems (AREA)

Abstract

The present invention discloses a kind of coupled resonance formula underwater wireless charging device, according to apart from the different coil turn of different switchings, so that the coil turn of transmitting terminal and receiving terminal all reaches efficiency of transmission optimal selection, and then optimize transmission characteristic, to reach the wireless energy transfer that higher efficiency is realized in larger distance range.

Description

A kind of coupled resonance formula underwater wireless charging device and method
Technical field
The present invention relates to wireless charging field, in particular, it is related to a kind of coupled resonance formula underwater wireless charging device And method.
Background technology
In briny environment, high working frequency can cause high eddy-current loss, and the energy for having a strong impact on wireless charging is passed Defeated characteristic.Therefore magnetic coupling wireless charging typically uses hundreds of kHz working frequency under water.Simultaneously for the negative of nominal 50 Ω Carry, the transmission characteristic of the series resonance employed in conventional air is unsatisfactory, therefore entered by the way of parallel resonance coupling Wireless charging under water-filling.
And for magnetic coupling parallel resonance underwater wireless charging system, can proving efficiency of transmission and transmission range, this is two big It is mutual restriction between core index, it is impossible to while optimization.The change of single parameter, to the Critical Coupling distance of wireless charging Influence with Critical Coupling efficiency is opposite.
In consideration of it, needing a kind of scheme that can solve the problem that this problem badly in the industry.
The content of the invention
The technical problems to be solved by the invention be to provide a kind of higher coupled resonance formula of energy transmission efficiency under water without Line charging device and method.
The purpose of the present invention is achieved through the following technical solutions:
A kind of coupled resonance formula underwater wireless charging device, including:
Transmitting terminal and receiving terminal;
The transmitting terminal includes the first range cells, the first control unit, drive circuit and transmitting coil, and described first surveys Coupled away from unit and the drive circuit with first control unit, the transmitting coil is connected with the drive circuit, First control unit adjusts the number of turn of the transmitting coil according to the range information of first range cells;
The receiving terminal includes the second range cells, the second control unit, load circuit and receiving coil, and described second surveys Coupled away from unit and the load circuit with second control unit, the receiving coil is connected with the load circuit, Second control unit adjusts the number of turn of the receiving coil according to the range information of second range cells;The transmitting The number of turn of coil is equal to the number of turn of the receiving coil.
Further, the drive circuit includes power supply and the first frequency modulation capacitance group, the power supply and first frequency modulation Capacitance group is in parallel.
Further, the power supply is variable signal source;The variable signal source is coupled with the first control unit;Described The working frequency in one control unit control variable signal source, makes the working frequency and the first frequency modulation capacitance group in variable signal source Resonant frequency it is equal.
Further, the first frequency modulation capacitance group includes at least two first electric capacity, the first frequency modulation capacitances in series At least one first regulation switch, first control unit is coupled with the first regulation switch, the first control unit control The disconnection of the first regulation switch and closure, make the resonant frequency of the first frequency modulation capacitance group and the work in variable signal source Frequency is equal.
Further, the transmitting coil includes earth terminal and at least two connection ends, and each connection end correspondence is different The number of turn of transmitting coil, each connection end is equipped with the first controlling switch, first control unit and the first controlling switch coupling Close, first control unit controls disconnection and the closure of first controlling switch, makes connection end and the first frequency modulation capacitance group It is switched on or switched off.
Further, the load circuit include load resistance and the second frequency modulation capacitance group, the load resistance with it is described Second frequency modulation capacitance group is in parallel.
Further, the second frequency modulation capacitance group includes at least two second electric capacity, the second frequency modulation capacitances in series At least one second regulation switch, the disconnection of the second control unit control the second regulation switch and closure, make second The resonant frequency of frequency modulation capacitance group is equal with the resonant frequency of the first frequency modulation capacitance group.
Further, the receiving coil includes earth terminal and at least two connection ends, and each connection end correspondence is different The number of turn of receiving coil, each connection end is equipped with the second controlling switch, second control unit and the second controlling switch coupling Close, second control unit controls disconnection and the closure of second controlling switch, makes connection end and the second frequency modulation capacitance group It is switched on or switched off.
Further, the inherent parameters all same of the transmitting coil and the receiving coil, the transmitting coil and institute Receiving coil is stated for circular coil or planar spiral winding.
According to another aspect of the present invention, the invention also discloses a kind of coupled resonance formula underwater wireless charging method, Methods described includes:
Obtain the distance between transmitting terminal and receiving terminal information;
The number of turn of transmitting coil and the number of turn of receiving coil are adjusted according to range information;The number of turn of the transmitting coil is equal to The number of turn of the receiving coil.
Range information of the present invention due to measuring transmitting terminal and receiving terminal by the first range cells, the first control unit root Send control instruction to control drive circuit according to range information so that the number of turn of the transmitting coil of drive circuit is adjusted to optimal, So that efficiency of transmission is optimal, according to apart from the different coil turn of different switchings;Measured and launched by the second range cells End and the range information of receiving terminal, the second control unit send control instruction to control load circuit according to range information so that The number of turn of the receiving coil of load circuit is adjusted to optimal, so that efficiency of transmission is optimal, according to different apart from different switchings Coil turn so that the coil turn of transmitting terminal and receiving terminal all reaches efficiency of transmission optimal selection, and then it is special to optimize transmission Property, to reach the wireless energy transfer that higher efficiency is realized in larger distance range.
Brief description of the drawings
Fig. 1 is the schematic diagram of influence of the number of turn of the coil of the embodiment of the present invention one to transmission characteristic;
Fig. 2 is the transmitting terminal equivalent circuit diagram of the embodiment of the present invention one;
Fig. 3 is the receiving terminal equivalent circuit diagram of the embodiment of the present invention one;
Fig. 4 is the schematic diagram of influence of the resonant frequency of the embodiment of the present invention two to transmission characteristic;
Fig. 5 is the transmitting terminal equivalent circuit diagram of the embodiment of the present invention two;
Fig. 6 is the receiving terminal equivalent circuit diagram of the embodiment of the present invention two;
Fig. 7 is the flow chart of the wireless charging method of the embodiment of the present invention;
Fig. 8 is the flow chart of the wireless charging method of the embodiment of the present invention;
Fig. 9 is the transmitting terminal equivalent circuit diagram of the embodiment of the present invention one;
Figure 10 is the receiving terminal equivalent circuit diagram of the embodiment of the present invention one.
Wherein:1st, transmitting terminal, the 11, first range cells, the 12, first control unit, 13, drive circuit, 131, variable letter Number source, the 132, first frequency modulation capacitance group, the 133, first regulation switch, the 134, first electric capacity, the 135, first controlling switch, 14, hair Ray circle, 2, receiving terminal, the 21, second range cells, the 22, second control unit, 23, load circuit, 231, load resistance, 232, Second frequency modulation capacitance group, the 233, second regulation switch, the 234, second electric capacity, the 235, second controlling switch, 24, receiving coil.
Embodiment
Concrete structure and function detail disclosed herein are only representational, and are for describing showing for the present invention The purpose of example property embodiment.But the present invention can be implemented by many alternative forms, and it is not interpreted as It is limited only by the embodiments set forth herein.
In the description of the invention, it is to be understood that term " " center ", " transverse direction ", " on ", " under ", "left", "right", The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on orientation shown in the drawings or Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, art Language " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance or implicit indicate institute The quantity of the technical characteristic of instruction.Thus, " first " is defined, one can be expressed or be implicitly included to the feature of " second " Or more this feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more. In addition, term " comprising " and its any deformation, it is intended that covering is non-exclusive to be included.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
Term used herein above is not intended to limit exemplary embodiment just for the sake of description specific embodiment.Unless Context clearly refers else, and otherwise singulative " one " used herein above, " one " also attempt to include plural number.Should also When understanding, term " comprising " and/or "comprising" used herein above provide stated feature, integer, step, operation, The presence of unit and/or component, and do not preclude the presence or addition of other one or more features, integer, step, operation, unit, Component and/or its combination.
The invention will be further described with preferred embodiment below in conjunction with the accompanying drawings.
Embodiment one
A kind of coupled resonance formula underwater wireless charging device, including:
Transmitting terminal 1 and receiving terminal 2;
Transmitting terminal 1 includes the first range cells 11, the first control unit 12, drive circuit 13 and transmitting coil 14, first Range cells 11 and drive circuit 13 are coupled with the first control unit 12, and transmitting coil 14 is connected with drive circuit 13, and first Control unit 12 adjusts the number of turn of transmitting coil 14 according to the range information of the first range cells 11;
Receiving terminal 2 includes the second range cells 21, the second control unit 22, load circuit 23 and receiving coil 24, second Range cells 21 and load circuit 23 are coupled with the second control unit 22, and receiving coil 24 is connected with load circuit 23, and second Control unit 22 adjusts the number of turn of receiving coil 24 according to the range information of the second range cells 21;Number of turn of transmitting coil 14 etc. In the number of turn of receiving coil 24.
Measure the range information of transmitting terminal 1 and receiving terminal 2 by the first range cells 11, the first control unit 12 according to away from Send control instruction to control drive circuit 13 from information so that the number of turn of the transmitting coil 14 of drive circuit 13 is adjusted to most It is good, so that efficiency of transmission is optimal, according to apart from the different coil turn of different switchings;Measured by the second range cells 21 The range information of transmitting terminal 1 and receiving terminal 2, the second control unit 22 sends control instruction according to range information to control load electricity Road 23 so that the number of turn of the transmitting coil 14 of load circuit 23 is adjusted to optimal, so that efficiency of transmission is optimal, according to distance The different coil turn of difference switching so that the coil turn of transmitting terminal 1 and receiving terminal 2 all reaches efficiency of transmission optimal selection, And then optimize transmission characteristic, to reach the wireless energy transfer that higher efficiency is realized in larger distance range.
The inherent parameters all same of transmitting coil and receiving coil, for circular coil, its own parameter includes coil half Footpath r, coil height H, turn number N and copper cash radius a.
In briny environment, high working frequency can cause high eddy-current loss, and the energy for having a strong impact on wireless charging is passed Defeated characteristic, magnetic coupling wireless charging is typically using hundreds of kHz working frequency under water;Simultaneously for nominal 50 Ω load, pass The transmission characteristic for the series resonance united employed in air is unsatisfactory, therefore uses this magnetic coupling parallel resonance formula wireless charging Electric installation, different coil turns are switched according to apart from different, and then optimize transmission characteristic, to reach in larger distance range Inside realize the wireless energy transfer of higher efficiency.
For circular coil, optimization transmission characteristic effect, typical coil turn can be reached by the switching coil number of turn Several influences to transmission characteristic are as shown in Figure 1.
As shown in figure 1, when apart from d=0~3cm, transmission characteristic is optimal when coil turn is N=10;D=3~5cm When, transmission characteristic is optimal when coil turn is N=7;During d=5~6cm, transmission characteristic is optimal when coil turn is N=6;d> During 6cm, transmission characteristic is optimal when coil turn is N=5.
The switching coil number of turn requires coil except connecing GND ends, in addition it is also necessary to which the tap for connecting signal with least two is carried out Switching.The change of coil turn can change the inductance value of coil, therefore also change the value of tuning capacitance simultaneously.Herein for one Individual specific works pattern, provides relevant parameter, operation principle and the concrete implementation method of system.
Working frequency is set as 100kHz, and transmitting coil 14 and receiving coil 24 use circular coil, radius r= 7.5cm, wire radius a=0.75mm.It is assumed that switching under number of turn N=5 and N=10 both of these case, corresponding to coil height H= 8.5mm and H=17mm, emulated by 3 D electromagnetic, obtain equivalent inductance of the coil in briny environment respectively L=8.44 μ H and L=28.13 μ H.
Fig. 2 and Fig. 3 are respectively the equivalent circuit diagram of transmitting terminal 1 and receiving terminal 2, and drive circuit 13 includes power supply and first and adjusted Frequency capacitance group 132, power supply is in parallel with the first frequency modulation capacitance group 132, and power supply is variable signal source 131;Variable signal source 131 and One control unit 12 is coupled;The working frequency in the first control unit 12 control variable signal source 131, makes the first frequency modulation capacitance group 132 resonant frequency is equal with the working frequency in variable signal source 131.
First frequency modulation capacitance group 132 includes two the first electric capacity 134, and the second electric capacity 234 is connected two first and adjusts switch 133 be S11And S21, the first control unit 12 133 couple with the first regulation switch, and the first control unit 12 control first, which is adjusted, opens The disconnection of pass 133 and closure, make the resonant frequency of the first frequency modulation capacitance group 132 equal with the working frequency in variable signal source 131, Because this method needs to keep resonant frequency constant, therefore the signal source of fixed frequency can also be used.
Transmitting coil 14 includes earth terminal (GND ends) and two connection ends (Signal1 ends and Signal2 ends), Mei Gelian Connect the number of turn of the different receiving coil 24 of end correspondence, the corresponding number of turn N=10 in Signal1 ends, the corresponding number of turn N in Signal2 ends =5, each connection end is equipped with the first controlling switch 135 for S12And S22, the first control unit 12 and the first controlling switch 135 Coupling, the first control unit 12 controls disconnection and the closure of the first controlling switch 135, makes connection end and the first frequency modulation capacitance group 132 are switched on or switched off.
Load circuit 23 includes the frequency modulation capacitance group 232 of load resistance 231 and second, the frequency modulation of load resistance 231 and second electricity Appearance group 232 is in parallel.
Second frequency modulation capacitance group 232 includes two the second electric capacity 234, and the second electric capacity 234 is connected two second and adjusts switch 233 be S31And S41, the second control unit 22 control second regulation switch 233 disconnection and closure, make the second frequency modulation capacitance group 232 resonant frequency is equal with the resonant frequency of the first frequency modulation capacitance group 132.
Receiving coil 24 includes earth terminal (GND ends) and two connection ends (Signal1 ends and Signal2 ends), Mei Gelian Connect the number of turn of the different receiving coil 24 of end correspondence, the corresponding number of turn N=10 in Signal1 ends, the corresponding number of turn N in Signal2 ends =5, each connection end is equipped with the second controlling switch 235 for S32And S42, the second control unit 22 and the second controlling switch 235 Coupling, the second control unit 22 controls disconnection and the closure of the second controlling switch 235, makes connection end and the second frequency modulation capacitance group 232 are switched on or switched off.
According to formulaCalculating is obtained, and frequency modulation electric capacity is respectively 300nF and 90nF, therefore sets the first frequency modulation The electric capacity that capacitance group 132 includes two the first electric capacity 134 is respectively cap31=90nF and cap32=300nF, the second frequency modulation electric capacity The electric capacity that group 232 includes two the second electric capacity 234 is respectively cap41=90nF and cap42=300nF.
The port of wherein transmitting coil 14 and receiving coil 24 and drive circuit 13 and load circuit 23 is illustrated according to circuit In title correspondence connect, the first control unit 12 and the second control unit 22 include single-chip microcomputer, the model of the single-chip microcomputer For AT89C2051, the range information for obtaining transmitting terminal 1 and receiving terminal 2 is fed back according to range cells, the first control unit 12 and the Two controls provide corresponding control signal, the regulation of regulation first switch, the first controlling switch 135, second regulation switch and second The break-make of controlling switch 235.The mode switch case of specific works is as follows:
(1) N=10 is selected during d=0~4cm, now equivalent inductance L=28.13 μ H, control unit provides corresponding control Information, switchs S11And S12、S31And S32Closure, S21And S22、S41And S42Disconnect, now coil N=10, the frequency modulation electricity of transmitting terminal 1 Hold for cap31=90nF, the frequency modulation electric capacity of receiving terminal 2 is cap41=90nF;
(2)d>N=5 is selected during 4cm, now equivalent inductance L=8.44 μ H, control unit provides corresponding control letter Breath, switchs S11And S12、S31And S32Disconnect, S21And S22、S41And S42Close, now coil N=5, the frequency modulation electric capacity of transmitting terminal 1 For cap32=300nF, the frequency modulation electric capacity of receiving terminal 2 is cap42=300nF.
According to another aspect of the present invention, as shown in figure 8, the invention also discloses a kind of coupled resonance formula underwater wireless Charging method, method includes:
S201:Obtain the distance between transmitting terminal and receiving terminal information;
S202:The number of turn of transmitting coil and the number of turn of receiving coil are adjusted according to range information;The circle of the transmitting coil The number of turn of the number equal to the receiving coil.
Just can be according to apart from the different coil turn of different switchings using the above method so that transmitting terminal 1 and receiving terminal 2 Coil turn all reach efficiency of transmission optimal selection, and then optimize transmission characteristic, it is real in larger distance range to reach Existing higher efficiency wireless energy transfer.
The inherent parameters all same of transmitting coil and receiving coil, for planar spiral winding, its own parameter includes line Enclose external diameter r1, internal coil diameter r2, turn number N and copper cash radius a.
As shown in Figure 9 and Figure 10, for planar spiral winding, earth terminal is the outer drive connector of planar spiral winding, can be with By the size of switching surface spiral winding internal diameter, that is, change the number of turn of the spiral of planar spiral winding, to reach optimization transmission Characteristic effect;Transmitting coil 14 includes earth terminal (GND ends) and two connection ends (Signal1 ends and Signal2 ends), Mei Gelian Connect the number of turn of the different receiving coil 24 of end correspondence, the corresponding number of turn N=5 in Signal1 ends, the corresponding number of turn N=in Signal2 ends 2, its operation principle is corresponding with the circular coil shown in Fig. 2;Receiving coil 24 includes earth terminal (GND ends) and two connection ends (Signal1 ends and Signal2 ends), the number of turn of the different receiving coil 24 of each connection end correspondence, the corresponding circle in Signal1 ends Number N=5, the corresponding number of turn N=2 in Signal2 ends, its operation principle is corresponding with the circular coil shown in Fig. 3;Pass through connection end The change at (Signal ends) switches the different numbers of turn, the change of the internal diameter of corresponding planar spiral winding to change.
According to the size apart from switching surface spiral winding internal diameter, actually corresponding is the different snail line of switching The number of turn of the spiral of circle so that the coil turn of transmitting terminal 1 and receiving terminal 2 all reaches efficiency of transmission optimal selection, and then optimizes Transmission characteristic, to reach the wireless energy transfer that higher efficiency is realized in larger distance range.
Embodiment two
The coupled resonance formula underwater wireless charging device is relative to the drive circuit 13 that the improvement of embodiment one is transmitting terminal 1 With the load circuit 23 and receiving coil 24 of transmitting coil 14, and receiving terminal 2, different resonance are switched frequently according to apart from different Rate, and then optimize transmission characteristic, to reach the wireless energy transfer that higher efficiency is realized in larger distance range.
Transmitting terminal 1 includes the first range cells 11, the first control unit 12, drive circuit 13 and transmitting coil 14, first Range cells 11 and drive circuit 13 are coupled with the first control unit 12, and transmitting coil 14 is connected with drive circuit 13, and first Control unit 12 controls the first resonant frequency of drive circuit 13 according to the range information of the first range cells 11;Receiving terminal 2 is wrapped Include the second range cells 21, the second control unit 22, load circuit 23 and receiving coil 24, the second range cells 21 and load electricity Road 23 is coupled with the second control unit 22, and receiving coil 24 is connected with load circuit 23, and the second control unit 22 is according to second The range information of range cells 21 controls the second resonant frequency of load circuit 23;First resonant frequency is equal to the second resonance frequently Rate.
Measure the range information of transmitting terminal 1 and receiving terminal 2 by the first range cells 11, the first control unit 12 according to away from Control instruction is sent from information and controls drive circuit 13 so that the first resonant frequency of drive circuit 13 is adjusted to optimal humorous Vibration frequency, so that efficiency of transmission is optimal, the range information of transmitting terminal 1 and receiving terminal 2 is measured by the second range cells 21, Second control unit 22 sends control instruction to control load circuit 23 according to range information so that the second of load circuit 23 is humorous Vibration frequency is adjusted to optimal resonant frequency, so that efficiency of transmission is optimal, transmitting terminal 1 and receiving terminal 2 all reach transmission effect Rate is optimal, and different resonant frequencies are switched according to apart from different, and then optimizes transmission characteristic, to reach in larger distance range Inside realize the wireless energy transfer of higher efficiency.
In briny environment, high working frequency can cause high eddy-current loss, and the energy for having a strong impact on wireless charging is passed Defeated characteristic, using this magnetic coupling parallel resonance formula wireless charging device, using low working frequency, according to apart from different switchings Different resonant frequencies, and then optimize transmission characteristic, to reach the wireless energy that higher efficiency is realized in larger distance range Amount transmission.
For magnetic coupling parallel resonance formula wireless charging device, either circular coil or planar spiral winding, in water Under when being operated, influence of the typical resonant frequency to the transmission characteristic of system is as shown in Figure 4.
As shown in figure 4, it can be seen that apart from d=0~5cm, when resonant frequency is 200kHz, transmission characteristic is most It is good;D=5~9cm, transmission characteristic is optimal when resonant frequency is 100kHz;d>During 9cm, transmission characteristic when resonant frequency is 50kHz Most preferably.
Switching resonant frequency does not require nothing more than the main frequency for changing signal source, also to change the value of tuning capacitance simultaneously.This In for specific works pattern, provide relevant parameter, operation principle and the concrete implementation method of system.
Transmitting coil 14 and receiving coil 24 use common circular coil, radius r=7.5cm, number of turn N=5, height H=8.5mm, wire radius a=0.75mm, are emulated by 3 D electromagnetic, obtain transmitting coil 14 and receiving coil 24 in sea Equivalent inductance in water environment is L=8.44 μ H.In order that system is operated in tri- kinds of 50kHz, 100kHz and 200kHz not respectively Under same resonant frequency, according to formulaThe frequency modulation electric capacity for calculating 50kHz frequencies is 1200nF, 100kHz The frequency modulation electric capacity of frequency is 300nF, and the frequency modulation electric capacity of 200kHz frequencies is 75nF.
Fig. 5 and Fig. 6 are respectively the equivalent circuit diagram of transmitting terminal 1 and receiving terminal 2, and drive circuit 13 includes power supply and first and adjusted Frequency capacitance group 132, power supply is in parallel with the first frequency modulation capacitance group 132;First frequency modulation capacitance group 132 include three be arranged in parallel the One electric capacity 134, it is S that two the first electric capacity 134, which are in series with the first regulation switch 133,1And S2, the first control unit 12 and first adjusts Section switch 133 is coupled, and the first control unit 12 is disconnected and closed by the regulation of control first switch 133;Make the first frequency modulation electric capacity The working frequency of group 132 is equal to the first resonant frequency.
Power supply is variable signal source 131;Variable signal source 131 is coupled with the first control unit 12;First control unit 12 The working frequency in variable signal source 131 is controlled, makes the working frequency in variable signal source 131 and the resonant frequency phase of drive circuit 13 Deng.
Transmitting coil 14 is in parallel with the first frequency modulation capacitance group 132.
Load circuit 23 includes the frequency modulation capacitance group 232 of load resistance 231 and second, the frequency modulation of load resistance 231 and second electricity Appearance group 232 is in parallel.
Second frequency modulation capacitance group 232 includes three the second electric capacity 234 being arranged in parallel, and two second electric capacity 234 are gone here and there The regulation of connection second switch 233 is S3And S4, the second control unit 22 control second, which is adjusted, to be switched 233 disconnections and closes;Receiving coil 24 is in parallel with the second frequency modulation capacitance group 232.
Result according to obtained by calculating, the first frequency modulation capacitance group 132 of setting includes the electric capacity difference of three the first electric capacity 134 For cap11=75nF, cap12=300-75=225nF,
cap13=1200-300=900nF, the second frequency modulation capacitance group 232 includes the electric capacity difference of three the second electric capacity 234 For cap21=75nF, cap22=300-75=225nF, cap23=1200-300=900nF.
Wherein 13 two ports Signal and GND of drive circuit are parallel-connected to the two ends of transmitting coil 14, load circuit 23 two ports Signal and GND are parallel-connected to the two ends of receiving coil 24.First control unit 12 and the second control unit 22 include single-chip microcomputer, and the model AT89C2051 of the single-chip microcomputer obtains transmitting terminal 1 and reception according to range cells feedback The range information at end 2, the first control unit 12 and the second control unit 22 provide corresponding control signal, regulation variable signal source The break-make of 131 frequency and the first regulation switch 133 and the second regulation switch 233.The mode switch case of specific works is as follows:
(1) apart from d=0~5cm, selective resonance frequency is 200kHz, and now the first control unit 12 provides control information, It is 200kHz to make signal source working frequency, while the first control unit 12 and the second control unit 22 control S1、S2、S3And S4 Disconnect, now the electric capacity of the first electric capacity 134 is cap11=75nF, the electric capacity of the second electric capacity 234 is cap21=75nF;
(2) during d=5~9cm, the first control unit 12 provides control information, and it is 100kHz to make signal source output frequency, together When the first control unit 12 control first regulation switch 133S1Closure and S2Disconnect, the second control unit 22 control the and adjust and open Close S3Closure and S4Disconnect, now the frequency modulation electric capacity of transmitting terminal 1 is cap11+cap12=75+225=300nF, the tune of receiving terminal 2 Frequency electric capacity is cap21+cap22=75+225=300nF;
(3)d>During 9cm, the first control unit 12 provides control information, and it is 50kHz to make signal source output frequency, while the One control unit 12 and the second control unit 22 control S1、S2、S3And S4Close, now the frequency modulation electric capacity of transmitting terminal 1 is cap11 +cap12+cap13=75+225+900=1200nF, the frequency modulation electric capacity of receiving terminal 2 is cap21+cap22+cap23=75+225+ 900=1200nF.
According to another aspect of the present invention, as shown in fig. 7, the invention also discloses a kind of coupled resonance formula underwater wireless Charging method, method includes:
S101:Obtain the distance between transmitting terminal and receiving terminal information;
S102:According to the second resonance of first resonant frequency at the hair frequency end of range information regulation transmitting terminal and receiving terminal frequently Rate, and make it that the first resonant frequency is equal to the second resonant frequency.
According to the first resonant frequency apart from the different drive circuit 13 of different switchings and it can just be born using the above method The second resonant frequency of circuit 23 is carried, and make it that the first resonant frequency is equal to the second resonant frequency so that transmitting terminal 1 and receiving terminal 2 resonant frequencies being all optimal, so optimize transmission characteristic, with reach realized in larger distance range higher efficiency without Heat input is transmitted.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's Protection domain.

Claims (10)

1. a kind of coupled resonance formula underwater wireless charging device, it is characterised in that including:
Transmitting terminal and receiving terminal;
The transmitting terminal includes the first range cells, the first control unit, drive circuit and transmitting coil, the first ranging list First and described drive circuit is coupled with first control unit, and the transmitting coil is connected with the drive circuit, described First control unit adjusts the number of turn of the transmitting coil according to the range information of first range cells;
The receiving terminal includes the second range cells, the second control unit, load circuit and receiving coil, the second ranging list First and described load circuit is coupled with second control unit, and the receiving coil is connected with the load circuit, described Second control unit adjusts the number of turn of the receiving coil according to the range information of second range cells;The transmitting coil The number of turn be equal to the receiving coil the number of turn.
2. a kind of coupled resonance formula underwater wireless charging device according to claim 1, it is characterised in that the driving electricity Road includes power supply and the first frequency modulation capacitance group, and the power supply is in parallel with the first frequency modulation capacitance group.
3. a kind of coupled resonance formula underwater wireless charging device according to claim 2, it is characterised in that the power supply is Variable signal source;The variable signal source is coupled with the first control unit;The first control unit control variable signal source Working frequency, makes the working frequency in variable signal source equal with the resonant frequency of the first frequency modulation capacitance group.
4. a kind of coupled resonance formula underwater wireless charging device according to claim 3, it is characterised in that described first adjusts Frequency capacitance group includes at least two first electric capacity, the first frequency modulation capacitances in series at least one first regulation switch, described the One control unit is coupled with the first regulation switch, the disconnected open and close of the first control unit control the first regulation switch Close, make the resonant frequency of the first frequency modulation capacitance group equal with the working frequency in variable signal source.
5. a kind of coupled resonance formula underwater wireless charging device according to claim 2, it is characterised in that the emission lines Circle includes earth terminal and at least two connection ends, and the number of turn of the different transmitting coil of each connection end correspondence, each connection end is equal Provided with the first controlling switch, first control unit is coupled with the first controlling switch, and the first control unit control is described The disconnection of first controlling switch and closure, make connection end be switched on or switched off with the first frequency modulation capacitance group.
6. a kind of coupled resonance formula underwater wireless charging device according to claim 1, it is characterised in that the load electricity Road includes load resistance and the second frequency modulation capacitance group, and the load resistance is in parallel with the second frequency modulation capacitance group.
7. a kind of coupled resonance formula underwater wireless charging device according to claim 6, it is characterised in that described second adjusts Frequency capacitance group includes at least two second electric capacity, the second frequency modulation capacitances in series at least one second regulation switch, described the The disconnection of two control units control the second regulation switch and closure, the resonant frequency and first for making the second frequency modulation capacitance group are adjusted The resonant frequency of frequency capacitance group is equal.
8. a kind of coupled resonance formula underwater wireless charging device according to claim 6, it is characterised in that the reception line Circle includes earth terminal and at least two connection ends, and the number of turn of the different receiving coil of each connection end correspondence, each connection end is equal Provided with the second controlling switch, second control unit is coupled with the second controlling switch, and the second control unit control is described The disconnection of second controlling switch and closure, make connection end be switched on or switched off with the second frequency modulation capacitance group.
9. a kind of coupled resonance formula underwater wireless charging device according to claim 1, it is characterised in that the emission lines The inherent parameters all same of circle and the receiving coil, the transmitting coil and the receiving coil are circular coil or plane spiral shell Spin line circle.
10. a kind of coupled resonance formula underwater wireless charging method, it is characterised in that methods described includes:
Obtain the distance between transmitting terminal and receiving terminal information;
The number of turn of transmitting coil and the number of turn of receiving coil are adjusted according to range information;The number of turn of the transmitting coil is equal to described The number of turn of receiving coil.
CN201710184643.XA 2017-03-24 2017-03-24 Coupling resonant underwater wireless charging device and method Active CN106941284B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710184643.XA CN106941284B (en) 2017-03-24 2017-03-24 Coupling resonant underwater wireless charging device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710184643.XA CN106941284B (en) 2017-03-24 2017-03-24 Coupling resonant underwater wireless charging device and method

Publications (2)

Publication Number Publication Date
CN106941284A true CN106941284A (en) 2017-07-11
CN106941284B CN106941284B (en) 2020-08-25

Family

ID=59463472

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710184643.XA Active CN106941284B (en) 2017-03-24 2017-03-24 Coupling resonant underwater wireless charging device and method

Country Status (1)

Country Link
CN (1) CN106941284B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115986963A (en) * 2022-01-20 2023-04-18 荣耀终端有限公司 Wireless charging transmitting terminal, charging base and system
CN117799455A (en) * 2023-06-29 2024-04-02 昆山联滔电子有限公司 Vehicle charging method, vehicle charging system and vehicle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010118191A1 (en) * 2009-04-08 2010-10-14 Access Business Group International Llc Selectable coil array
CN103066709A (en) * 2013-01-30 2013-04-24 江苏华英光宝科技股份有限公司 Multi-receiving-end magnetic coupling wireless energy transmission system
CN103944281A (en) * 2014-04-15 2014-07-23 清华大学 Energy transmitting terminal and energy wireless transmission method
CN104009551A (en) * 2014-05-07 2014-08-27 南京超颖新能源科技有限公司 Wireless charging power supply side circuit reducing number of switching tubes and application thereof
CN104578349A (en) * 2015-01-31 2015-04-29 丰岛电子科技(苏州)有限公司 Wireless charger and wireless charging system
CN104578453A (en) * 2015-01-13 2015-04-29 华南理工大学 Magnetic coupling resonance wireless power transmission device achieving self-optimization of frequency and dynamic tuning
CN204559246U (en) * 2015-03-16 2015-08-12 中国计量学院 Based on the magnet coupled resonant type wireless power transfer of low frequency PWM rectifier
CN105826066A (en) * 2016-05-16 2016-08-03 上海墨百意信息科技有限公司 Coil applied to wireless charging system and inductance adjusting method
CN205489724U (en) * 2016-03-25 2016-08-17 十铨恒泰科技(深圳)有限公司 Wireless charging device of electronic automobile

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010118191A1 (en) * 2009-04-08 2010-10-14 Access Business Group International Llc Selectable coil array
CN103066709A (en) * 2013-01-30 2013-04-24 江苏华英光宝科技股份有限公司 Multi-receiving-end magnetic coupling wireless energy transmission system
CN103944281A (en) * 2014-04-15 2014-07-23 清华大学 Energy transmitting terminal and energy wireless transmission method
CN104009551A (en) * 2014-05-07 2014-08-27 南京超颖新能源科技有限公司 Wireless charging power supply side circuit reducing number of switching tubes and application thereof
CN104578453A (en) * 2015-01-13 2015-04-29 华南理工大学 Magnetic coupling resonance wireless power transmission device achieving self-optimization of frequency and dynamic tuning
CN104578349A (en) * 2015-01-31 2015-04-29 丰岛电子科技(苏州)有限公司 Wireless charger and wireless charging system
CN204559246U (en) * 2015-03-16 2015-08-12 中国计量学院 Based on the magnet coupled resonant type wireless power transfer of low frequency PWM rectifier
CN205489724U (en) * 2016-03-25 2016-08-17 十铨恒泰科技(深圳)有限公司 Wireless charging device of electronic automobile
CN105826066A (en) * 2016-05-16 2016-08-03 上海墨百意信息科技有限公司 Coil applied to wireless charging system and inductance adjusting method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115986963A (en) * 2022-01-20 2023-04-18 荣耀终端有限公司 Wireless charging transmitting terminal, charging base and system
CN115986963B (en) * 2022-01-20 2024-04-19 荣耀终端有限公司 Wireless charging transmitting terminal, charging base and system
CN117799455A (en) * 2023-06-29 2024-04-02 昆山联滔电子有限公司 Vehicle charging method, vehicle charging system and vehicle

Also Published As

Publication number Publication date
CN106941284B (en) 2020-08-25

Similar Documents

Publication Publication Date Title
CN104247206B (en) Electrical power transmission system
CN104092316B (en) Constant current output type induction type wireless power transmission converter and parameter selection method thereof
CN106532845B (en) A kind of battery wireless charging system of pair side combined type compensation network
CN104577358B (en) Antenna controling circuit, multifrequency antenna system and the method for adjusting much frequency resonance antenna
CN103765729B (en) power relay
CN102882286B (en) Electric field coupling-based wireless power transmission system
US20130069753A1 (en) High frequency pcb coils
KR20130033867A (en) Wireless power transmission system
CN106560976A (en) Wireless charging transmitting system and wireless charging receiving system
CN109245231A (en) A kind of wireless charging topological structure with nature constant pressure and flow output characteristics
CN103931078A (en) Wireless power repeater
CN107112812A (en) Apparatus and method for the Wireless power transmission between DC voltage source
CN107453490A (en) A kind of Contactless power transmission device
CN103078415B (en) Critical coupling control method of magnetic resonance coupling wireless energy transmission system
Lee et al. Comparative analysis of frequency-selective wireless power transfer for multiple-Rx systems
CN106941284A (en) A kind of coupled resonance formula underwater wireless charging device and method
KR101173947B1 (en) Method of sending switching instruction in multi-node wireless power transmission
CN107093929A (en) Coupled resonance formula underwater wireless charging device and method
CN108682544B (en) Optimal design method for transmitting coil of wireless charging system
CN112821575B (en) Wireless power transmission device with switchable compensation capacitors and switching control method
CN117713393A (en) Double-emission magnetic coupling resonant underwater wireless power supply system
WO2013141533A1 (en) Transmitter for transmitting wireless power and wireless power transmitting system including same
CN107733093A (en) A kind of Capacitance Coupled resonance type wireless energy transmission system and method
US10454317B2 (en) Wireless power transmission device and wireless power transmission system for wireless power transmission without a power transmission coil change
CN112018907A (en) Charging module and dual-mode wireless charging system

Legal Events

Date Code Title Description
PB01 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