CN105305659A - Magnetic coupling resonant wireless power transmission device - Google Patents
Magnetic coupling resonant wireless power transmission device Download PDFInfo
- Publication number
- CN105305659A CN105305659A CN201510745249.XA CN201510745249A CN105305659A CN 105305659 A CN105305659 A CN 105305659A CN 201510745249 A CN201510745249 A CN 201510745249A CN 105305659 A CN105305659 A CN 105305659A
- Authority
- CN
- China
- Prior art keywords
- module
- power amplifier
- inductance
- input
- electric capacity
- 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.)
- Pending
Links
Abstract
The embodiment of the invention discloses a magnetic coupling resonant wireless power transmission device, which comprises an E-type power amplifier transmission module, a resonance system, a rectifier module, a current conversion module and an optimum frequency automatic adjusting module, wherein the E-type power amplifier transmission module is connected with power supply equipment; an input end of the resonance system is connected with an output end of the E-type power amplifier transmission module; the input end of the rectifier module is connected with the output end of the resonance system; the input end of the current conversion module is connected with the output end of the rectifier module and the output end is connected with electric equipment; and the input end of the optimum frequency automatic adjusting module is connected with power supply equipment and the output end is connected with the E-type power amplifier transmission module. According to the magnetic coupling resonant wireless power transmission device, the problem of low power supply efficiency of various sensors in internet of things is effectively solved; a load is provided with electric power in a noncontact manner; the maximum transmission efficiency of the electric power is automatically tracked; and single-point transmitting and multi-point receiving functions can be relatively conveniently achieved.
Description
Technical field
The invention belongs to electronic technology field, particularly relate to a kind of magnet coupled resonant type wireless power transfer.
Background technology
Namely magnetic coupling wireless electric energy transmission device utilizes magnetic coupling harmonic technology, by electric energy from the wireless power transmitting device being transported to power consumption equipment of power supply unit.Be converted into direct current energy by the high-frequency electrical energy of wireless conveying and be supplied to power consumption equipment.Usually current conversion module is utilized the high-frequency electrical energy of wireless transmission to be converted into constant voltage DC electric energy and to be delivered to power consumption equipment in prior art.
In actual applications, the distance of wireless power transmission, the change of angle energy factor can cause the coupling coefficient of resonator system to change thereupon, for ensureing maximum wireless power transmission efficiency, need the operating frequency suitably regulating transmitting coil in resonator system.
Therefore, for the above-mentioned defect existed in currently available technology, the invention provides a kind of magnet coupled resonant type wireless power transfer scheme, solve the defect existed in prior art, the inefficient problem of various sensor power in effective solution Internet of Things, contactlessly for load provides electric energy, the maximum transmitted efficiency of automatic tracing electric energy, can realize the function of single transmitter, multipoint reception more easily.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of magnet coupled resonant type wireless power transfer, no matter make power consumption equipment be in which kind of operating state by current conversion module, for the entirety that described current conversion module and described power consumption equipment are formed, its input impedance is constant set point, wherein said set point meets conjugate impedance match for the output impedance of the E class power amplifier module described in the present embodiment, can realize maximum transmitted efficiency.
For achieving the above object, technical scheme of the present invention is:
A kind of magnet coupled resonant type wireless power transfer, comprises
The E class power amplifier sending module be connected with power supply unit;
The resonator system that input is connected with the output of described E class power amplifier sending module;
The rectification module that input is connected with the output of described resonator system;
The current conversion module that input is connected with the output of described rectification module, output is connected with power consumption equipment, the input impedance of wherein said current conversion module be fixing set point and with the output impedance conjugate impedance match of described high frequency E class power amplifier sending module;
Input is connected with power supply unit, the automatic adjustment module of optimum frequency that output is connected with E class power amplifier sending module.
Preferably, described E class power amplifier sending module comprises the first inductance, second inductance, first electric capacity and the second electric capacity, one end of described first inductance connects input voltage, the other end connects one end of the first electric capacity and one end of the second inductance respectively, the other end of described second inductance connects one end of the second electric capacity, described second inductance, second electric capacity forms series resonant tank, one end of described second electric capacity connects the other end of the first electric capacity, described first inductance is radio-frequency choke, described second inductance is air core coil, the second inductance that described first inductance value is greater than 10 times, described first electric capacity is field effect transistor input capacitance, for the summation of distributed capacitance and extraneous electric capacity.
Preferably, described resonator system at least comprises two coupling coils, and described coupling coil comprises transmitting coil and receiving coil, and described transmitting coil and receiving coil have identical resonance frequency, and described transmitting coil is LC series resonance.
Preferably, described rectification module and load match.
Preferably, described current conversion module comprises buck-boost topological circuit.
Preferably, described current conversion module comprises voltage boosting-reducing type topological circuit.
Preferably, described current conversion module comprises voltage-dropping type topological circuit.
Preferably, described current conversion module comprises booster type topological circuit.
Preferably, described optimum frequency adjustment module comprises direct-current input power supplying, input voltage power acquisition storage and micro controller unit MCU, for the voltage in testing circuit, electric current, and efficiency is made to reach maximum by the switching frequency that closed-loop control Automatic-searching is the suitableeest.
Compared with the wireless electric energy transmission device adopted with prior art, beneficial effect of the present invention is as follows:
(1) the effective inefficient problem of various sensor power solved in Internet of Things, contactlessly for load provides electric energy, the maximum transmitted efficiency of automatic tracing electric energy;
(2) function of single transmitter, multipoint reception can be realized more easily.
Accompanying drawing explanation
Fig. 1 is the circuit integrity block diagram of a kind of magnet coupled resonant type wireless power transfer of the present invention.
Fig. 2 is a kind of magnet coupled resonant type wireless power transfer of the present invention E class power amplifier sending module schematic diagram.
Fig. 3 is the prime hardware elementary diagram of a kind of magnet coupled resonant type wireless power transfer of the present invention.
Fig. 4 is the rear class hardware elementary diagram of a kind of magnet coupled resonant type wireless power transfer of the present invention.
Fig. 5 a is a kind of structural representation of the current conversion module of a kind of magnet coupled resonant type wireless of the present invention power transfer;
Fig. 5 b is another structural representation of the current conversion module of a kind of magnet coupled resonant type wireless power transfer of the present invention;
Fig. 5 c is another structural representation of the current conversion module of a kind of magnet coupled resonant type wireless power transfer of the present invention;
Fig. 5 d is another structural representation of the current conversion module of a kind of magnet coupled resonant type wireless power transfer of the present invention.
Description of reference numerals: 1-E class power amplifier sending module; 2-resonator system; 3-optimum frequency adjustment module; 4-rectification module; 9-current conversion module; 5-first inductance; 6-second inductance; 7-first electric capacity; 8-second electric capacity.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.
See Fig. 1, it is the circuit integrity block diagram of a kind of magnet coupled resonant type wireless power transfer of the present invention, comprises the E class power amplifier sending module 1 be connected with power supply unit; The resonator system 2 that input is connected with the output of E class power amplifier sending module; The rectification module 4 that input is connected with the output of resonator system; The current conversion module 9 that input is connected with the output of rectification module, output is connected with power consumption equipment, wherein the input impedance of current conversion module be fixing set point and with the output impedance conjugate impedance match of high frequency E class power amplifier sending module; Input is connected with power supply unit, the automatic adjustment module 3 of optimum frequency that output is connected with E class power amplifier sending module.
See Fig. 2, be depicted as the E class power amplifier sending module schematic diagram of the wireless electric energy transmission device that the present invention is based on E class power amplifier, E class power amplifier sending module comprises the first inductance 5, second inductance 6 and the first electric capacity 7, second electric capacity 8, one end of first inductance 5 connects input voltage, the other end connects one end of the first electric capacity 7 and one end of the second inductance 6 respectively, the other end of the second inductance 6 connects one end of the second electric capacity 8, second inductance 6, second electric capacity 8 forms series resonant tank, one end of second electric capacity 8 connects the other end of the first electric capacity 7, first inductance 5 is radio-frequency choke, second inductance 6 is air core coil, the second inductance 6 that first inductance 5 value is greater than 10 times, first electric capacity 7 is field effect transistor input capacitances, for the summation of distributed capacitance and extraneous electric capacity.E power-like amplifier does not consume power consumption, so the efficiency of desirable E class power amplifier can reach 100%.
In embody rule embodiment, resonator system at least comprises two coupling coils, and coupling coil comprises transmitting coil and receiving coil, and transmitting coil and receiving coil have identical resonance frequency.Transmitting coil is LC series resonance, transmitting coil connects E class power amplifier sending module and obtains electric energy, receiving coil absorbs energy from transmitting coil in the mode of magnetic resonance, namely there is close coupling resonance phenomena, realize the wireless transmission of electric energy, and by being connected to the current rectifying and wave filtering circuit powering load of its rear end.The mode of magnetic resonance fits like a glove without the need to the position of coil piece, can realize energy efficient long range propagation.
In embody rule embodiment, prove through experiment, switching frequency need a little less than transmitting, reception resonance frequency, and efficiency just can peak.Therefore, the automatic adjustment module of optimum frequency comprises direct-current input power supplying, input voltage power acquisition storage and micro controller unit MCU, input DC power is by voltage, the electric current in MCU testing circuit, and make efficiency reach maximum by the switching frequency that closed-loop control Automatic-searching is the suitableeest, eliminate the MCU detection module of receiver module, prevent the loss of efficiency further.
In embody rule embodiment, rectification module comprises rectification, filtering, chopper circuit, and rectification circuit is connected with load, and receiving coil is through the energy acceptance of LC resonant tank by transmitting coil, according to unequally loaded demand, suitable rectification, filtering, chopper circuit to be chosen.Different rear class rectification circuits, because of the isoparametric existence of parasitic capacitance, will change the LC resonance frequency of receiving coil, thus affect the radio transmission efficiency of magnetic resonance.
See Fig. 3, be depicted as the prime hardware elementary diagram of the wireless electric energy transmission device that the present invention is based on E class power amplifier, prime comprises the E class power amplifier and optimum frequency regulating circuit that adopt Sofe Switch, DC inverter is alternating current and by air core coil emitted energy, optimum frequency automatic regulating guarantee system effectiveness reaches the highest.System is inputted by 15V direct current, the E class power amplifier consisted of L1, L2, C1, C2 and MOS realizes from direct current to the inversion exchanged, the resonant tank that L2, C2 form respectively value is 72uH, 11uF, L2 adopts the Litz wire of 0.1*200 to turn to the air core coil that diameter is 20cm, C2 adopts the CBB capacitances in series of the 100V withstand voltage of 2 22uF, after its series connection, withstand voltage doubles, and capacitance is 11uF, warp
calculate known, the resonance frequency of system is about 179KHz.Choke induction L1 adopts the magnet ring of iron sial material, turns to the inductance of 1mH.In embody rule embodiment, adopt the low-power consumption MCU--MSP430F6638 control UCC27211MOS driver drives MOS (CSD19531, VDS are 100V, Id be 105A, Rds (on) be 7.7m Ω) of TI company.The capacitance of shunt capacitance C1 is by the operating state of decision-making circuit, if inverter is operated in optimum state, its power output is maximum.Value in conjunction with the parasitic capacitance of MOS and the C1 under repetitive measurement learns optimum Working is 22uF.Generally speaking, the operating frequency of coil working needs a little less than its natural frequency, and switching frequency the present embodiment adopts the sampling resistor by inputting 20m Ω to carry out current sample, the differential signal of sampling is amplified 50 times and is sent to MCU by INA282, MCU process input power change information, the PWM frequency of continuous adjustment driven MOS is to best point, and closed-loop control makes efficiency reach the highest.
See Fig. 4, be depicted as the rear class hardware elementary diagram of the wireless electric energy transmission device that the present invention is based on E class power amplifier, rear class LC series resonance, through rectification circuit for load provides energy.Receive resonant circuit L3, C3 and transmitting resonant circuit L2, C2 value, draw materials identical, object guarantees that resonant frequency point is identical.Rear class is powering load after full-bridge rectification, capacitor filtering.
See Fig. 5 a, a kind of structural representation of its current conversion module 9 being a kind of magnet coupled resonant type wireless of the present invention power transfer, in embody rule embodiment, current conversion module 9 comprises buck-boost topological circuit, if the input voltage V of the current conversion module 9 obtained
inwith input current I
inratio be not equal to the input impedance R of current conversion module 9
inset point, then regulate the switching tube Q in buck-boost topological circuit
1service time, until ratio equals set point.
See Fig. 5 b, another structural representation of its current conversion module being a kind of magnet coupled resonant type wireless power transfer of the present invention, in embody rule embodiment, current conversion module 9 is for comprising voltage boosting-reducing type topological circuit, if the input voltage V of the current conversion module 9 obtained
inwith input current I
inratio be not equal to the input impedance R of current conversion module 9
inset point, then regulate the switching tube Q in buck-boost topological circuit
1service time, until ratio equals set point.
See Fig. 5 c, another structural representation of its current conversion module being a kind of magnet coupled resonant type wireless power transfer of the present invention, in embody rule embodiment, current conversion module 9 comprises voltage-dropping type topological circuit, if the input voltage V of the current conversion module 9 obtained
inwith input current I
inratio be not equal to the input impedance R of current conversion module 9
inset point, then regulate the switching tube Q in buck-boost topological circuit
1service time, until ratio equals set point.
See Fig. 5 d, another structural representation of its current conversion module being a kind of magnet coupled resonant type wireless power transfer of the present invention, in embody rule embodiment, current conversion module 9 comprises booster type topological circuit, if the input voltage V of the current conversion module 9 obtained
inwith input current I
inratio be not equal to the input impedance R of current conversion module 9
inset point, then regulate the switching tube Q in buck-boost topological circuit
1service time, until ratio equals set point.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a magnet coupled resonant type wireless power transfer, is characterized in that, comprises
E class power amplifier sending module (1) be connected with power supply unit;
The resonator system (2) that input is connected with the output of described E class power amplifier sending module;
The rectification module (4) that input is connected with the output of described resonator system;
The current conversion module (9) that input is connected with the output of described rectification module, output is connected with power consumption equipment, the input impedance of wherein said current conversion module is fixing set point, and with the output impedance conjugate impedance match of described high frequency E class power amplifier sending module;
Input is connected with power supply unit, the automatic adjustment module of optimum frequency (3) that output is connected with E class power amplifier sending module.
2. magnet coupled resonant type wireless power transfer as claimed in claim 1, it is characterized in that, described E class power amplifier sending module (1) comprises the first inductance (5), second inductance (6), first electric capacity (7) and the second electric capacity (8), one end of described first inductance (5) connects input voltage, the other end connects one end of the first electric capacity (7) and one end of the second inductance (6) respectively, the other end of described second inductance (6) connects one end of the second electric capacity (8), described second inductance (6), second electric capacity (8) forms series resonant tank, one end of described second electric capacity (8) connects the other end of the first electric capacity (7), described first inductance (5) is radio-frequency choke, described second inductance (6) is air core coil, the second inductance (6) that described first inductance (5) value is greater than 10 times, described first electric capacity (7) is field effect transistor input capacitance, for the summation of distributed capacitance and extraneous electric capacity.
3. as claimed in claim 1 based on the wireless electric energy transmission device of E class power amplifier, it is characterized in that, described resonator system (2) at least comprises two coupling coils, described coupling coil comprises transmitting coil and receiving coil, described transmitting coil and receiving coil have identical resonance frequency, and described transmitting coil is LC series resonance.
4. as claimed in claim 1 based on the wireless electric energy transmission device of E class power amplifier, it is characterized in that, described rectification module (4) and load match.
5., as claimed in claim 1 based on the wireless electric energy transmission device of E class power amplifier, it is characterized in that, described current conversion module (9) comprises buck-boost topological circuit.
6., as claimed in claim 1 based on the wireless electric energy transmission device of E class power amplifier, it is characterized in that, described current conversion module (9) comprises voltage boosting-reducing type topological circuit.
7., as claimed in claim 1 based on the wireless electric energy transmission device of E class power amplifier, it is characterized in that, described current conversion module (9) comprises voltage-dropping type topological circuit.
8., as claimed in claim 1 based on the wireless electric energy transmission device of E class power amplifier, it is characterized in that, described current conversion module (9) comprises booster type topological circuit.
9. as claimed in claim 1 based on the wireless electric energy transmission device of E class power amplifier, it is characterized in that, described optimum frequency adjustment module (3) comprises direct-current input power supplying, input voltage power acquisition storage and micro controller unit MCU, for the voltage in testing circuit, electric current, and efficiency is made to reach maximum by the switching frequency that closed-loop control Automatic-searching is the suitableeest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510745249.XA CN105305659A (en) | 2015-11-05 | 2015-11-05 | Magnetic coupling resonant wireless power transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510745249.XA CN105305659A (en) | 2015-11-05 | 2015-11-05 | Magnetic coupling resonant wireless power transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105305659A true CN105305659A (en) | 2016-02-03 |
Family
ID=55202563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510745249.XA Pending CN105305659A (en) | 2015-11-05 | 2015-11-05 | Magnetic coupling resonant wireless power transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105305659A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612160A (en) * | 2017-10-27 | 2018-01-19 | 西北工业大学 | A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device |
| CN107666186A (en) * | 2017-10-30 | 2018-02-06 | 华南理工大学 | A kind of wireless energy transfer system and method |
| CN109104001A (en) * | 2018-10-11 | 2018-12-28 | 宁夏全福电子科技有限公司 | Apart from radio energy transmission system impedance real-time regulating method in middle power |
| CN109417312A (en) * | 2016-05-04 | 2019-03-01 | 英佩雷尔创新有限公司 | Wireless power transmission system |
| CN110244080A (en) * | 2017-10-11 | 2019-09-17 | 杭州电子科技大学 | Preparation method for three-dimensional accelerometer magnetcisuspension floating body |
| CN113872342A (en) * | 2021-09-23 | 2021-12-31 | 台州市复鑫睿智能科技有限公司 | Medium and small power wireless energy over-distance transmission system based on magnetic resonance mode |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2869432A1 (en) * | 2013-03-19 | 2015-05-06 | Nitto Denko Corporation | Wireless power transmission device, method for controlling heat generated by wireless power transmission device, and production method for wireless power transmission device |
-
2015
- 2015-11-05 CN CN201510745249.XA patent/CN105305659A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2869432A1 (en) * | 2013-03-19 | 2015-05-06 | Nitto Denko Corporation | Wireless power transmission device, method for controlling heat generated by wireless power transmission device, and production method for wireless power transmission device |
Non-Patent Citations (1)
| Title |
|---|
| 方润等: "基于E 类功放非接触式移动电源供电系统设计", 《杭州电子科技大学学报( 自然科学版)》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109417312A (en) * | 2016-05-04 | 2019-03-01 | 英佩雷尔创新有限公司 | Wireless power transmission system |
| CN109417312B (en) * | 2016-05-04 | 2022-07-26 | 帝国理工学院创新有限公司 | Wireless power transmission system |
| CN110244080A (en) * | 2017-10-11 | 2019-09-17 | 杭州电子科技大学 | Preparation method for three-dimensional accelerometer magnetcisuspension floating body |
| CN110244080B (en) * | 2017-10-11 | 2021-02-05 | 杭州电子科技大学 | Preparation method for three-dimensional accelerometer magnetic suspension |
| CN107612160A (en) * | 2017-10-27 | 2018-01-19 | 西北工业大学 | A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device |
| CN107612160B (en) * | 2017-10-27 | 2023-08-18 | 西北工业大学 | Magnetic coupling parallel resonance type wireless power transmission device |
| CN107666186A (en) * | 2017-10-30 | 2018-02-06 | 华南理工大学 | A kind of wireless energy transfer system and method |
| CN109104001A (en) * | 2018-10-11 | 2018-12-28 | 宁夏全福电子科技有限公司 | Apart from radio energy transmission system impedance real-time regulating method in middle power |
| CN113872342A (en) * | 2021-09-23 | 2021-12-31 | 台州市复鑫睿智能科技有限公司 | Medium and small power wireless energy over-distance transmission system based on magnetic resonance mode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105305659A (en) | Magnetic coupling resonant wireless power transmission device | |
| CN107148718B (en) | Wireless power supply system | |
| CN105186716A (en) | WPT apparatus based on class E power amplifier | |
| CN204652001U (en) | Self adaptation magnetic resonance wireless charger | |
| CN107636933B (en) | Wireless power supply system | |
| WO2017056343A1 (en) | Wireless power transmission system and power transmission device | |
| CN112803614B (en) | Wireless power supply system based on receiving end equivalent negative resistance PT symmetry and control method | |
| CN105186714A (en) | Low-power wireless charging circuit topological structure | |
| CN105247762B (en) | Resonance wireless power driver with adjustable power output | |
| US10447165B2 (en) | Adaptive power amplifier for optimizing wireless power transfer | |
| WO2015035924A1 (en) | Wireless charging device and mobile terminal using same | |
| CN105324913B (en) | Electrical power transmission system | |
| CN114600361A (en) | High-frequency wireless power transmission system and transmitter and receiver thereof | |
| CN104269946B (en) | A kind of radio frequency energy collector | |
| US8760009B2 (en) | Wireless power source | |
| CN106487105B (en) | A kind of magnet coupled resonant type wireless power transfer of modified line coil structures | |
| Maulana et al. | Wireless power transfer characterization based on inductive coupling method | |
| CN107612160B (en) | Magnetic coupling parallel resonance type wireless power transmission device | |
| CN108565990A (en) | A kind of wireless electric energy transmission device with constant current output characteristic | |
| CN204243917U (en) | Based on the device of the magnetic coupling resonance wireless energy transfer of repeat circuit | |
| CN203827014U (en) | Smart television and set-top box remote control wireless charging circuit | |
| CN109314406B (en) | Wireless power transmission system | |
| CN204103611U (en) | A kind of radio frequency energy collector | |
| US9819215B2 (en) | Wireless charging system | |
| CN205051447U (en) | Wireless charging circuit topological structure of low -power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
|
| WD01 | Invention patent application deemed withdrawn after publication |