CN107040051A - A kind of radio energy output device of high-output power - Google Patents
A kind of radio energy output device of high-output power Download PDFInfo
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- CN107040051A CN107040051A CN201611154802.3A CN201611154802A CN107040051A CN 107040051 A CN107040051 A CN 107040051A CN 201611154802 A CN201611154802 A CN 201611154802A CN 107040051 A CN107040051 A CN 107040051A
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Abstract
The present invention discloses a kind of radio energy output device of high-output power, including loosely coupled transformer, primary side resonant network, load resistance, secondary resonant network and driving power supply, wherein, the input connection driving power supply of primary side resonant network, the primary side of loosely coupled transformer is connected with the output end of primary side resonant network, the secondary of loosely coupled transformer is connected with the input of secondary resonant network, the output end connection load resistance of secondary resonant network；Also include the negative resistance being connected between primary side resonant network and the primary side of loosely coupled transformer, negative resistance includes operational amplifier and resistance, the resistance of negative resistance can be configured as the case may be, the equivalent resistance to reduce loosely coupled transformer primary side.Such a device can improve wireless electric energy transmission device power output so that original wireless electric energy transmission device can make load resistance obtain more power outputs under the input of original driving voltage.
Description
Technical field
The present invention relates to a kind of device that wireless power transmission is carried out using loosely coupled transformer.
Background technology
Convenient, flexible, the environment that wireless power transmission technology (WPT) has compared with traditional contact charging are adapted to
Property it is strong, safe and reliable the advantages of it is attract increasing experts and scholars both at home and abroad and is studied this.Electromagentic resonance
The key of formula WPT system is its non-contact transformer, because the Loosely Coupled Architecture of non-contact transformer in itself brings coupled systemes
Number is relatively low and the characteristics of decline rapidly with the extension of distance, cause electric energy transmission quality with the increase of distance drastically under
The disastrous effect of drop.When transmission range is determined, the bottleneck that transimission power is the development of electromagentic resonance formula WPT technologies how is improved.
When the component parameters of WPT system, working frequency, input voltage and transmission range are determined, power output is by transformation
The equivalent loss resistance influence of device primary side is larger, and the presence of the resistance reduces WPT power output.Set not changing transformer
On the premise of meter, if taking other measures to reduce the resistance, then system output power can be effectively improved.
It is a kind of circuit diagram of existing power transfer shown in Fig. 6, wherein, primary side resonant network uses single capacitor C1,
Secondary resonant network uses single capacitor C2, wherein, load resistance RLOn power output be
R1For transformer primary side resistance, R2For transformer secondary resistance, M is transformer primary secondary mutual inductance, uiFor input voltage, ω is defeated
Enter voltage angular frequency.
The content of the invention
The purpose of the present invention, is the radio energy output device for providing a kind of high-output power, it can improve radio
Energy transmitting device power output so that original wireless electric energy transmission device can make load under the input of original driving voltage
Resistance obtains more power outputs.
In order to reach above-mentioned purpose, solution of the invention is：
A kind of radio energy output device of high-output power, including loosely coupled transformer, primary side resonant network, load electricity
Resistance, secondary resonant network and driving power supply, wherein, the input connection driving power supply of primary side resonant network, loosely coupled transformer
Primary side be connected with the output end of primary side resonant network, the input of the secondary of loosely coupled transformer and secondary resonant network connects
Connect, the output end connection load resistance of secondary resonant network；Also include and be connected on primary side resonant network and loosely coupled transformer
Primary side between negative resistance.
Above-mentioned negative resistance includes operational amplifier, the first feedback resistor, the second feedback resistor and input resistor, its
In, the positive input terminal of operational amplifier as negative resistance input；First feedback resistor is connected to the defeated of operational amplifier
Go out between end and positive input terminal, the second feedback resistor is connected between the output end of operational amplifier and negative input end, input
The negative input end of one end concatenation operation amplifier of resistor, other end ground connection, and the output end of operational amplifier is used as negative electricity
The output end of resistance.
Above-mentioned negative resistance includes operational amplifier, the first feedback resistor, the second feedback resistor and input resistor, its
In, the negative input end of operational amplifier is as the input of negative resistance, and the first feedback resistor is connected to the defeated of operational amplifier
Go out between end and negative input end, the second feedback resistor is connected between the output end of operational amplifier and positive input terminal, input
The positive input terminal of one end concatenation operation amplifier of resistor, other end ground connection, and the output end of operational amplifier is used as negative electricity
The output end of resistance.
Above-mentioned primary side resonant network uses inductance or electric capacity.
Above-mentioned primary side resonant network includes inductance and electric capacity, and the two ends of inductance are first defeated respectively as primary side resonant network
Enter end and the first output end, one end of electric capacity connects the first output end of primary side resonant network, and the other end of electric capacity is used as primary side
The second input and the second output end of resonant network.
Above-mentioned secondary resonant network uses inductance or electric capacity.
Above-mentioned secondary resonant network includes inductance and electric capacity, and the two ends of inductance are first defeated respectively as secondary resonant network
Enter end and the first output end, one end of electric capacity connects the first output end of secondary resonant network, and the other end of electric capacity is used as secondary
The second input and the second output end of resonant network.
After such scheme, the present invention passes through the primary side winding series negative resistance in loosely coupled transformer, the negative resistance
The resistance of primary side winding is partly counteracted, under same driving power supply effect, loosely coupled transformer primary side flows into bigger
Electric current, loosely coupled transformer secondary induces higher voltage, so that load resistance obtains higher power output.
Brief description of the drawings
Fig. 1 is the circuit diagram of the present invention；
Fig. 2 is that one kind of negative resistance in the present invention realizes circuit diagram；
Fig. 3 is that the another of negative resistance realizes circuit diagram in the present invention；
Fig. 4 is the resonant network resistance figure only with electric capacity；
Fig. 5 is the resonant network resistance figure using LC connections；
Fig. 6 is a kind of physical circuit figure of existing power output device.
Embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
As shown in figure 1, the present invention provides a kind of radio energy output device of high-output power, including loosely coupled transformer
T, primary side resonant network N1, load resistance RL, secondary resonant network N2And driving power supply, wherein, primary side resonant network N1Input
End connection driving power supply, loosely coupled transformer T primary side and primary side resonant network N1Output end connection, loosely coupled transformer T
Secondary and secondary resonant network N2Input connection, secondary resonant network N2Output end connection load resistance RL；This is existing
There is circuit structure, repeat no more.
The improvement of the present invention is：Also include negative resistance RN, negative resistance RNInclude operational amplifier and resistance, go here and there
It is associated in primary side resonant network N1Between loosely coupled transformer T primary side, negative resistance RNResistance can carry out as the case may be
Configuration, the equivalent resistance to reduce loosely coupled transformer T primary sides.
As shown in Fig. 2 be a kind of physical circuit form of negative resistance in the present invention, including operational amplifier, the first feedback
Resistor R1, the second feedback resistor R2With input resistor R3, wherein, operational amplifier have positive input terminal, negative input end and
Output end, the positive input terminal of operational amplifier as negative resistance input, to connect primary side resonant network N1；First feedback
Resistor R1It is connected between the output end of operational amplifier and positive input terminal, the second feedback resistor R2It is connected to operation amplifier
Between the output end and negative input end of device, input resistor R3One end concatenation operation amplifier negative input end, another termination
Ground, and operational amplifier output end as the output end of negative resistance, the primary side to connect loosely coupled transformer T.According to electricity
Principle is learned, the equivalent resistance of negative resistance shown in Fig. 2 is
As shown in figure 3, be another physical circuit form of negative resistance in the present invention, including it is operational amplifier, first anti-
Present resistor R1, the second feedback resistor R2With input resistor R3, wherein, operational amplifier has positive input terminal, negative input end
And output end, the negative input end of operational amplifier as negative resistance input, to connect primary side resonant network N1；First is anti-
Present resistor R1It is connected between the output end of operational amplifier and negative input end, the second feedback resistor R2Computing is connected to put
Between the output end and positive input terminal of big device, input resistor R3One end concatenation operation amplifier positive input terminal, the other end
Ground connection, and operational amplifier output end as the output end of negative resistance, the primary side to connect loosely coupled transformer T.According to
Electrical principles, the equivalent resistance of negative resistance shown in Fig. 3 is
The primary side resonant network N1Or secondary resonant network N2Structure can with identical or different, can only with inductance,
Can only with electric capacity (as shown in Figure 4), can also as shown in figure 5, using inductance and electric capacity combination connect, wherein, inductance
Two ends respectively as resonant network first input end and the first output end, one end connection resonant network of electric capacity it is first defeated
Go out end, the other end of electric capacity as resonant network the second input and the second output end.The primary side resonant network N1It is used to
Carry out loosely coupled transformer T primary side reactive-load compensation, secondary resonant network N2Secondary to carry out loosely coupled transformer T is idle
Compensation.
The technological thought of above example only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within the scope of the present invention
Within.
Claims (7)
1. a kind of radio energy output device of high-output power, it is characterised in that：Including loosely coupled transformer, primary side Resonance Neural Network
Network, load resistance, secondary resonant network and driving power supply, wherein, the input connection driving power supply of primary side resonant network, loose coupling
The primary side for closing transformer is connected with the output end of primary side resonant network, and the secondary of loosely coupled transformer is defeated with secondary resonant network
Enter end connection, the output end connection load resistance of secondary resonant network；Also include and be connected on primary side resonant network and loose coupling
Negative resistance between the primary side of transformer.
2. a kind of radio energy output device of high-output power as claimed in claim 1, it is characterised in that：The negative resistance
Including operational amplifier, the first feedback resistor, the second feedback resistor and input resistor, wherein, operational amplifier is just
Input as negative resistance input；First feedback resistor be connected to the output end of operational amplifier and positive input terminal it
Between, the second feedback resistor is connected between the output end of operational amplifier and negative input end, one end connection of input resistor
The negative input end of operational amplifier, the other end ground connection, and operational amplifier output end as negative resistance output end.
3. a kind of radio energy output device of high-output power as claimed in claim 1, it is characterised in that：The negative resistance
Including operational amplifier, the first feedback resistor, the second feedback resistor and input resistor, wherein, operational amplifier it is negative
Input as negative resistance input, the first feedback resistor be connected to the output end of operational amplifier and negative input end it
Between, the second feedback resistor is connected between the output end of operational amplifier and positive input terminal, one end connection of input resistor
The positive input terminal of operational amplifier, the other end ground connection, and operational amplifier output end as negative resistance output end.
4. a kind of radio energy output device of high-output power as claimed in claim 1, it is characterised in that：The primary side is humorous
Vibrating network uses inductance or electric capacity.
5. a kind of radio energy output device of high-output power as claimed in claim 1, it is characterised in that：The primary side is humorous
Vibrating network includes inductance and electric capacity, the two ends of inductance respectively as primary side resonant network first input end and the first output end,
One end of electric capacity connects the first output end of primary side resonant network, and the other end of electric capacity is inputted as the second of primary side resonant network
End and the second output end.
6. a kind of radio energy output device of high-output power as claimed in claim 1, it is characterised in that：The secondary is humorous
Vibrating network uses inductance or electric capacity.
7. a kind of radio energy output device of high-output power as claimed in claim 1, it is characterised in that：The secondary is humorous
Vibrating network includes inductance and electric capacity, the two ends of inductance respectively as secondary resonant network first input end and the first output end,
One end of electric capacity connects the first output end of secondary resonant network, and the other end of electric capacity is inputted as the second of secondary resonant network
End and the second output end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611154802.3A CN107040051A (en) | 2016-12-14 | 2016-12-14 | A kind of radio energy output device of high-output power |
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| CN201611154802.3A CN107040051A (en) | 2016-12-14 | 2016-12-14 | A kind of radio energy output device of high-output power |
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| CN201611154802.3A Pending CN107040051A (en) | 2016-12-14 | 2016-12-14 | A kind of radio energy output device of high-output power |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681790A (en) * | 2017-10-10 | 2018-02-09 | 华南理工大学 | Series connection tandem type radio energy transmission system based on negative resistance |
| CN107707032A (en) * | 2017-10-10 | 2018-02-16 | 华南理工大学 | Parallel connection type radio energy transmission system in parallel based on negative resistance |
| CN107733096A (en) * | 2017-10-10 | 2018-02-23 | 华南理工大学 | Tandem type radio energy transmission system in parallel based on negative resistance |
| CN108233553A (en) * | 2018-02-02 | 2018-06-29 | 华南理工大学 | A kind of SS type field coupling radio energy transmission systems based on negative resistance |
| CN110311478A (en) * | 2019-08-06 | 2019-10-08 | 天津工业大学 | Wireless power transmission impedance matching methods and device based on negative resistance |
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| CN102027683A (en) * | 2008-05-13 | 2011-04-20 | 高通股份有限公司 | Method and apparatus with negative resistance in wireless power transfers |
| CN103299525A (en) * | 2010-12-16 | 2013-09-11 | 高通股份有限公司 | Wireless power receiver circuitry |
| CN105406605A (en) * | 2015-12-29 | 2016-03-16 | 湖南大学 | Capacitive coupling wireless power transfer circuit and control method thereof |
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| CN102027683A (en) * | 2008-05-13 | 2011-04-20 | 高通股份有限公司 | Method and apparatus with negative resistance in wireless power transfers |
| CN103299525A (en) * | 2010-12-16 | 2013-09-11 | 高通股份有限公司 | Wireless power receiver circuitry |
| CN105406605A (en) * | 2015-12-29 | 2016-03-16 | 湖南大学 | Capacitive coupling wireless power transfer circuit and control method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681790A (en) * | 2017-10-10 | 2018-02-09 | 华南理工大学 | Series connection tandem type radio energy transmission system based on negative resistance |
| CN107707032A (en) * | 2017-10-10 | 2018-02-16 | 华南理工大学 | Parallel connection type radio energy transmission system in parallel based on negative resistance |
| CN107733096A (en) * | 2017-10-10 | 2018-02-23 | 华南理工大学 | Tandem type radio energy transmission system in parallel based on negative resistance |
| CN107707032B (en) * | 2017-10-10 | 2024-04-05 | 华南理工大学 | Parallel-parallel wireless power transmission system based on negative resistance |
| CN107733096B (en) * | 2017-10-10 | 2024-05-07 | 华南理工大学 | Parallel-serial wireless power transmission system based on negative resistance |
| CN107681790B (en) * | 2017-10-10 | 2024-05-07 | 华南理工大学 | Series-series wireless power transmission system based on negative resistance |
| CN108233553A (en) * | 2018-02-02 | 2018-06-29 | 华南理工大学 | A kind of SS type field coupling radio energy transmission systems based on negative resistance |
| CN108233553B (en) * | 2018-02-02 | 2024-05-07 | 华南理工大学 | SS type electric field coupling wireless power transmission system based on negative resistance |
| CN110311478A (en) * | 2019-08-06 | 2019-10-08 | 天津工业大学 | Wireless power transmission impedance matching methods and device based on negative resistance |
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