CN203590068U - High frequency transformation circuit of resonance type wireless electricity transmission system - Google Patents

High frequency transformation circuit of resonance type wireless electricity transmission system Download PDF

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Publication number
CN203590068U
CN203590068U CN201320763480.8U CN201320763480U CN203590068U CN 203590068 U CN203590068 U CN 203590068U CN 201320763480 U CN201320763480 U CN 201320763480U CN 203590068 U CN203590068 U CN 203590068U
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China
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electric capacity
switching tube
inductance
resonance type
type wireless
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CN201320763480.8U
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Chinese (zh)
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张波
黄润鸿
丘东元
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South China University of Technology SCUT
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South China University of Technology SCUT
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The utility model provides a high frequency transformation circuit of a resonance type wireless electricity transmission system. The high frequency transformation circuit of the resonance type wireless electricity transmission system comprises a first switching tube, a second switching tube, a first inductor, a second inductor, a third inductor, a first capacitor, a second capacitor, a third capacitor, and a load; a positive electrode of an input DC source is connected with the drain electrode of the first switching tube, the drain electrode of the second switching tube, one end of the first capacitor, and one end of the second capacitor; the source electrode of the first switching tube is connected with the other end of the first capacitor, one end of the first inductor, and one end of the third inductor; the source electrode of the second switching tube is connected with the other end of the second capacitor, one end of the second inductor, one end of the third capacitor, and one end of the load; the other end of the first inductor is connected with the other end of the second inductor and the negative electrode of the DC source; and the other end of the third capacitor is connected with the other end of the third inductor and the other end of the load. According to the utility model, the connection and disconnection of the two switching tubes are controlled to realize the DC-AC transformation and the soft switching, so as to improve the transformation efficiency.

Description

A kind of high frequency conversion circuit of resonance type wireless electric energy transmission system
Technical field
The utility model belongs to the application of wireless power transmission technology, particularly a kind of high frequency conversion circuit of resonance type wireless electric energy transmission system.
Background technology
Wireless power transmission technology was just attempted experimentally by novel tesla of U.S. utility (Nicola Tesla) before more than 100 years.2006, the researcher of the Massachusetts Institute of Technology (MIT) utilizes the resonance technique of physics successfully at 2m, apart from left and right, with 40% efficiency, to light the bulb of a 60W, this experiment is not only the reproduction of tesla's experiment, another new breakthrough of wireless power transmission technology especially, and started the upsurge of wireless power transmission research.
Wireless power transmission technology is a kind of delivery of electrical energy mode of wide application prospect, there is the advantages such as safe, reliable, flexible, convenient, day by day be subject to the attention of countries in the world, and be more and more widely used in the various places that are not suitable for or are inconvenient to use wire contact electric energy transmitting, as occasions such as implantable medical device, mobile electronic product, robot, rail electric car power supplies, and be expected to can aspect small-power electronic product wireless charging, replace traditional plug charging in the near future.
As the radiating circuit of wireless power transmission, particularly, as the radiating circuit of the resonance type wireless delivery of electrical energy of high frequency, there is more deep research both at home and abroad.As traditional linear power amplification circuit, as category-A, category-B, C class power amplification circuit, its technology is quite ripe, but the not high problem of these power amplification circuit ubiquity efficiency.The D class of switching mode, E class, DE class power amplification circuit have overcome the shortcoming of traditional power amplification circuit, make switching tube be operated on off state, have improved the conversion efficiency of power amplification circuit.Controlled resonant converter is as the emitter of wireless power transmission also early existing research, but due to the technical limitations of power device power output and operating frequency cannot do very highly.And increasing of switching device also increased the complexity of system and cost.
The current type as wireless power transmission radiating circuit or fewer, and much power amplification circuit is also not suitable as the radiating circuit of wireless power transmission, so be necessary to propose a kind of new resonance type wireless delivery of electrical energy radiating circuit topology.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of high frequency conversion circuit of resonance type wireless electric energy transmission system is provided.
The utility model is achieved through the following technical solutions:
A high frequency conversion circuit for resonance type wireless electric energy transmission system, comprises the first switching tube, second switch pipe, the first inductance, the second inductance, the first electric capacity, the second electric capacity and laod network; The positive pole in input direct-current source with the drain electrode of the first switching tube, one end of the drain electrode of second switch pipe, the first electric capacity, one end of the second electric capacity be connected; The source electrode of the first switching tube is connected with the other end, one end of the first inductance, one end of laod network of the first electric capacity; The source electrode of second switch pipe is connected with the other end, one end of the second inductance, the other end of laod network of the second electric capacity; The other end of the first inductance is connected with the other end of the second inductance, the negative pole in input direct-current source.
The high frequency conversion circuit of described a kind of resonance type wireless electric energy transmission system, the effect of the first electric capacity and the second electric capacity that it is characterized in that is to realize the soft switch of the first switching tube and second switch pipe.
The high frequency conversion circuit of described a kind of resonance type wireless electric energy transmission system, is characterized in that the 3rd inductance and the 3rd electric capacity and load form laod network.The 3rd inductance and the 3rd electric capacity are realized LC resonance.
Compared with prior art, the utlity model has following advantage:
1, adopt the translation circuit structure of switching mode, the principle design occurring when different according to voltage, electric current, DC-AC conversion efficiency is high, and theoretical efficiency reaches 100%.
2, designed circuit has parameter symmetrical structure, therefore, and simplicity of design.
Accompanying drawing explanation
Fig. 1 is resonance type wireless electric energy transmission system high frequency conversion circuit of the present utility model.
Fig. 2 be in the utility model embodiment different phase ( t 0- t 1) work schematic diagram.
Fig. 3 a ~ Fig. 3 b is operation mode schematic diagram corresponding to different operating stage in embodiment.
Specific embodiments
Below in conjunction with accompanying drawing, the concrete enforcement of utility model is further described, but enforcement of the present utility model and protection are not limited to this.
Embodiment
As Fig. 1, a kind of high frequency conversion circuit of resonance type wireless electric energy transmission system, comprises the first switching tube S 1, second switch pipe S 2, the first inductance l 1, the second inductance l 2, the first electric capacity c 1, the second electric capacity c 2and laod network; Described laod network is by the 3rd inductance lwith the 3rd electric capacity cand load rform.
The first electric capacity c 1with the second electric capacity c 2effect be to realize the first switching tube S 1with second switch pipe S 2soft switch.
Fig. 2 has provided operation principle of the present utility model, and Fig. 3 has provided operation mode of the present utility model.During circuit steady operation, the course of work of the present utility model is as follows:
(1) when t= t 0time, the first switching tube S 1from conducting, become shutoff, second switch pipe S 2from shutoff, become conducting.Now, the first switching tube S 1the voltage at two ends is zero, realizes no-voltage and turn-offs; Second switch pipe S 2the voltage at two ends is also zero, realizes no-voltage open-minded.Input direct-current source v instart to the first electric capacity c 1charging.Input direct-current source v inby second switch pipe S 2to laod network, power.
(2) exist t 0~ t 1stage, the first switching tube S 1keep turn-offing second switch pipe S 2keep conducting.In this phase process, the first electric capacity c 1the voltage first increases and then decreases at two ends, if load rit is suitable to select, when this stage finishes, and the first electric capacity c 1the voltage at two ends will drop to zero.Equivalent electric circuit as shown in Figure 3 a.
(3) when t= t 1time, the first switching tube S 1from shutoff, become conducting, second switch pipe S 2from conducting, become shutoff.Now, the first switching tube S 1the voltage at two ends is zero, realizes no-voltage open-minded; Second switch pipe S 2the voltage at two ends is also zero, realizes no-voltage and turn-offs.Input direct-current source v instart to the second electric capacity c 2charging.Input direct-current source v inby the first switching tube S 1to laod network, power.
(4) exist t 1~ t 2stage, the first switching tube S 1keep conducting, second switch pipe S 2keep turn-offing.In this phase process, the second electric capacity c 2the voltage first increases and then decreases at two ends, if load rit is suitable to select, when this stage finishes, and the second electric capacity c 2the voltage at two ends will drop to zero.Equivalent electric circuit as shown in Figure 3 b.
For verifying the correctness of the high frequency conversion circuit of a kind of resonance type wireless electric energy transmission system of the present utility model, carried out emulation experiment, result shows that this circuit realized soft switch, theoretical efficiency reaches 100%.

Claims (3)

1. a high frequency conversion circuit for resonance type wireless electric energy transmission system, is characterized in that comprising the first switching tube (S 1), second switch pipe (S 2), the first inductance ( l 1), the second inductance ( l 2), the first electric capacity ( c 1), the second electric capacity ( c 2) and laod network; Input direct-current source ( v in) positive pole and the first switching tube (S 1) drain electrode, second switch pipe (S 2) drain electrode, the first electric capacity ( c 1) one end, the second electric capacity ( c 2) one end connect; The first switching tube (S 1) source electrode and the first electric capacity ( c 1) the other end, the first inductance ( l 1) one end of one end, laod network connect; Second switch pipe (S 2) source electrode and the second electric capacity ( c 2) the other end, the second inductance ( l 2) the other end of one end, laod network connect; The first inductance ( l 1) the other end and the second inductance ( l 2) the other end, input direct-current source ( v in) negative pole connect.
2. the high frequency conversion circuit of a kind of resonance type wireless electric energy transmission system according to claim 1, it is characterized in that the first electric capacity ( c 1) and the second electric capacity ( c 2) realize the first switching tube (S 1) and second switch pipe (S 2) soft switch.
3. the high frequency conversion circuit of a kind of resonance type wireless electric energy transmission system according to claim 1, it is characterized in that the 3rd inductance ( l) and the 3rd electric capacity ( c) and load ( r) composition laod network, the 3rd inductance ( l) and the 3rd electric capacity ( c) realize LC resonance.
CN201320763480.8U 2013-11-28 2013-11-28 High frequency transformation circuit of resonance type wireless electricity transmission system Active CN203590068U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103647468A (en) * 2013-11-28 2014-03-19 华南理工大学 High-frequency conversion circuit of resonant wireless power transmission system
TWI580150B (en) * 2015-05-15 2017-04-21 立錡科技股份有限公司 Resonant Wireless Power Receiver Circuit and Control Circuit and Wireless Power Conversion Method thereof
WO2017206420A1 (en) * 2016-06-01 2017-12-07 中惠创智无线供电技术有限公司 Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103647468A (en) * 2013-11-28 2014-03-19 华南理工大学 High-frequency conversion circuit of resonant wireless power transmission system
CN103647468B (en) * 2013-11-28 2016-10-05 华南理工大学 A kind of high frequency conversion circuit of resonance type wireless electric energy transmission system
TWI580150B (en) * 2015-05-15 2017-04-21 立錡科技股份有限公司 Resonant Wireless Power Receiver Circuit and Control Circuit and Wireless Power Conversion Method thereof
WO2017206420A1 (en) * 2016-06-01 2017-12-07 中惠创智无线供电技术有限公司 Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit
US10848004B2 (en) 2016-06-01 2020-11-24 Zonecharge (Shenzhen) Wireless Power Technology Co, Ltd. Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit

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