CN107231043A - A kind of wireless power supply transmitted based on single line electric energy - Google Patents
A kind of wireless power supply transmitted based on single line electric energy Download PDFInfo
- Publication number
- CN107231043A CN107231043A CN201710560897.7A CN201710560897A CN107231043A CN 107231043 A CN107231043 A CN 107231043A CN 201710560897 A CN201710560897 A CN 201710560897A CN 107231043 A CN107231043 A CN 107231043A
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- tesla coil
- coil
- tesla
- single line
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- 239000004020 conductor Substances 0.000 claims abstract description 34
- 239000007787 solid Substances 0.000 claims abstract description 14
- 230000003071 parasitic effect Effects 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 abstract description 24
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
-
- H02J7/025—
Abstract
The invention discloses a kind of wireless power supply transmitted based on single line electric energy, including AC power source, planar conductor, solid conductor and Tesla coil；The anode in described AC power source connects planar conductor by solid conductor and constitutes wireless charging platform；Wherein vertical range of the bottom of Tesla coil between planar conductor is less than or equal to 5 centimetres；The bottom of Tesla coil is less than or equal to 5 centimetres with the horizontal range at planar conductor edge；Load is connected with the top of Tesla coil, is loaded the coil turn being connected with Tesla coil and is accounted for the 1/5 of Tesla coil total number of turns；Wherein the frequency in AC power source is equal to the resonant frequency of Tesla coil.The transmission of single line electric energy is combined by the present invention with wireless power platform, realizes the wireless power platform of the larger power supply free degree.Pattern and only need single Tesla coil to complete the characteristic of energy acceptance that transmitting terminal single line is energized, have greatly saved the cost of system.
Description
Technical field
The invention belongs to wireless power transmission field, and in particular to a kind of wireless power dress transmitted based on single line electric energy
Put.
Background technology
In many occasions, the power supply of electronic device is powered using wired power supply or battery, caused in-convenience in use not even
It may realize.Wireless senser such as in intelligent building is largely implanted in material, wall, can not be changed when the batteries have been exhausted
Battery；It is used for the wireless senser for detecting crop growth in agricultural in the wild, a large amount of manpower and materials will be spent by changing battery；
The medical device implanted in implantable medical, pain and risk etc. may be brought to human body by changing battery.Wireless power is
Solve one of approach of this problem.But in existing wireless power Platform Designing, there are problems that two：1) energy transmit coil and
Distance between energy acceptance coil is largely limited by efficiency of transmission；2) conventional wireless powers platform using two-wire confession
The pattern of electricity provides electric energy for platform, and it powers identical in manufacturing cost and connected mode with traditional wire.In practical application
In, the distance for how increasing transmitting coil and receiving coil expands the working range of receiving terminal, realizes that higher receiving terminal is used
The electric free degree (here, the free degree refer to receiving terminal near transmitting terminal can normal work regional extent), and how to reduce and be
System manufacturing cost is the key issue for needing to solve.
Single line electric energy transmission plan based on Tesla coil, there is different degrees of research both at home and abroad.It is more general at present
Time single line electric energy transmission plan by two connected ball ring shape bulky capacitors Tesla coil realize single line electric energy transmit.
The single line electric energy transmission plan transmission range that the program is proposed is shorter.When transmitting relatively high power electric energy, transmitting and receiving terminal
There must be larger inductance value, this is realized often through increase Tesla coil volume.Therefore launch and connect during transmission relatively high power
Receiving apparatus volume is excessively huge.Meanwhile, in traditional single line electric energy transmission plan rely on two equidimensions Tesla coil this make
The cost of manufacture for the system of obtaining is higher.In actual applications, how to increase the transmission range of single line electric energy transmission, and how to reduce
The manufacturing cost of single line electric energy transmission system is equally the key issue for needing to solve.
The content of the invention
For the deficiency of existing scheme, the present invention proposes a kind of wireless power supply transmitted based on single line electric energy.
It is a kind of based on single line electric energy transmit wireless power supply, including AC power source, planar conductor, solid conductor and
Tesla coil；The anode in described AC power source connects planar conductor by solid conductor and constitutes wireless charging platform；Its
Vertical range of the bottom of middle Tesla coil between planar conductor is less than or equal to 5 centimetres；The bottom of Tesla coil with
The horizontal range at planar conductor edge is less than or equal to 5 centimetres；Load is connected with the top of Tesla coil, load and tesla's line
The coil turn of circle connection accounts for the 1/5 of Tesla coil total number of turns；Wherein the frequency in AC power source is equal to Tesla coil
Resonant frequency.
The resonant frequency of described Tesla coil is obtained by calculating the inductance and parasitic capacitance of coil, is given below and is posted
The calculation formula of raw electric capacity and stray inductance：
The stray inductance calculation formula of Tesla coil is：
Wherein
μ is magnetic conductivity in vacuum, and N is the coiling number of turn, and s is solenoid cross-sectional area, and h is solenoid coiling height, and R is spiral shell
Spool radius.
The parasitic capacitance calculation formula of Tesla coil is：
Wherein h=N (w+d), ε0=8.85 × 10-12, w be spiral linear diameter, d be turn-to-turn away from.
Formula is calculated by resonant frequency again
The self-resonant frequency of Tesla coil can be calculated.
The transmission of single line electric energy is combined by the present invention with wireless power platform, realizes the wireless confession of the larger power supply free degree
Level platform.Pattern and only need single Tesla coil to complete the characteristic of energy acceptance that transmitting terminal single line is energized, greatly
The cost of system is saved.
Brief description of the drawings
Fig. 1 is receiving terminal detail view, and receiving terminal is made up of Tesla coil, power supply load needed for connection above receiving terminal；
System structure diagram when Fig. 2 is receiving terminal and wireless power contact with platform；
Fig. 3 is system structure diagram when receiving terminal is not contacted with wireless power platform；
System Working Principle figure when Fig. 4 is receiving terminal and wireless power contact with platform；
Fig. 5 is System Working Principle figure when receiving terminal is not contacted with wireless power platform.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of wireless power supply transmitted based on single line electric energy, including AC power source,
Planar conductor, solid conductor and Tesla coil；The anode in described AC power source connects planar conductor by solid conductor
Constitute wireless charging platform；Wherein vertical range of the bottom of Tesla coil between planar conductor is less than or equal to 5 centimetres；
The bottom of Tesla coil is less than or equal to 5 centimetres with the horizontal range at planar conductor edge；Load and the top of Tesla coil
Connection, loads the coil turn being connected with Tesla coil and accounts for the 1/5 of Tesla coil total number of turns；The wherein frequency in AC power source
Rate is equal to the resonant frequency of Tesla coil.
If Fig. 2 is system model schematic diagram when system receiving terminal bottom is contacted with planar conductor.Fig. 3 is system receiving terminal
System model schematic diagram when bottom is not contacted with planar conductor.Under two kinds of working conditions, the output frequency in AC power source is equal
It is designed as the resonant frequency of receiving terminal.Can be multiple load supplyings simultaneously on planar conductor.
AC power source PSAnode by solid conductor, planar conductor is conducted electrical currents in the form of conducting electric current.
When receiving terminal Tesla coil bottom end points is contacted with conducting plane, conduct current through Tesla coil and be transmitted to load
One end is a ends in Fig. 1.The other end of load is b ends in Fig. 1, in being Fig. 4 by the parasitic capacitance of Tesla coil over the ground
C1And C2, transmit displacement current and return to the earth i.e. negative electrode in AC power source, so as to form complete loops, its fundamental diagram is such as
Shown in Fig. 4.And when receiving terminal is not contacted with conducting plane, AC power source PSAnode again by solid conductor to conduct
The form of electric current, transfers current to conducting plane.Now, electric current passes through the parasitism electricity between Tesla coil and conducting plane
Appearance is the C in Fig. 53, transmission displacement current to a ends of load, load b ends are equally through the parasitic capacitance of Tesla coil over the ground
C in Fig. 51, C2, transmit displacement current and return to the earth, form complete loops, its fundamental diagram is as shown in Figure 5.AC power source
Single line is connected between platform, and solid conductor resistance is smaller therefore loss of the conduction electric current on wire is smaller, is passed with wired electric energy
Defeated its transmission range similar in transmission range meets real needs enough.Meanwhile, solid conductor transmission electric energy mode into
Will be far below the transmission of wired electric energy on this.
The technical solution adopted in the present invention is：In the way of solid conductor connection wireless power platform, single line electricity is realized
Can transmission and the efficient combination of wireless power platform.System receiving terminal Tesla coil is at receiving terminal resonant frequency point with electric capacity
The mode of coupling makes system formation current loop.
The frequency for being critical that AC power source of single wire transmission system worked well proposed in the present invention is equal to spiral shell
The resonant frequency of spin line circle.The acquisition of resonant frequency can be obtained by calculating the inductance and parasitic capacitance of coil, be given below and posted
The calculation formula of raw electric capacity and stray inductance：
The stray inductance calculation formula of Tesla coil is：
Wherein
μ is magnetic conductivity in vacuum, and N is the coiling number of turn, and s is solenoid cross-sectional area, and h is solenoid coiling height, and R is spiral shell
Spool radius.
The parasitic capacitance calculation formula of Tesla coil is：
Wherein h=N (w+d), ε0=8.85 × 10-12, w be spiral linear diameter, d be turn-to-turn away from.
Formula is calculated by resonant frequency again
The self-resonant frequency of Tesla coil can be calculated.
Below in conjunction with accompanying drawing 4, accompanying drawing 5 and embodiment, the invention will be further described.
Embodiment 1：
By taking the receiving terminal of a diameter of 0.71mm enamel-covered wire coiling as an example.The receiving terminal winds around a diameter of 7cm, high
Spend on the insulated hollow cylinder for 24cm, the coiling number of turn is 280 circles.Ultimately form Tesla coil as shown in Figure 3.Coil forming
Afterwards, the receiving terminal stray inductance value is calculated for L=1.27mH via stray inductance and parasitic capacitance calculation formula, parasitic capacitance value
For C=4.045pF.The resonant frequency of receiving terminal can be calculated for 2.22MHz by calculating formula by resonant frequency.
Energy transmitting terminal includes a signal source and a power amplifier module.Signal source is that a maximum output frequency is
80MHz, maximum output voltage peak value is 10V function signal generator (Tektronix AFG3053C).Power amplifier module
It is 20W for a peak power output, maximum output frequency is 10MHz power amplifier.Signal source output is set to
2.22MHz sine wave, single line connects square aluminium foil (conducting plane) after amplifying via power amplifier.Solid conductor during test
It is 15.6m to take length, and a diameter of 0.71mm enamel-covered wire verifies single wire transmission distance (due to place limitation not as transmission medium
Do the test of longer distance).After system connection is finished, the receiving terminal for being connected to 15 watts of small bulbs of power is connect with wireless power platform
Touch, 15 watts small bulb normal work.Then by the receiving terminal insulated aerial at 5cm, 15W bulb remains unchanged just directly over platform
Often work.After tested under both of which (receiving terminal is not contacted with contact with platform and receiving terminal with platform) system can realize it is many
Loading functional.
It can be seen that, the method for the invention can provide higher-energy for receiving terminal and receive the free degree and energy acceptance efficiency,
The scheme of platform single line energy supply simultaneously had not only saved system cost of manufacture but also had increased the transmission range of single line electric energy transmission.
Claims (2)
1. a kind of wireless power supply transmitted based on single line electric energy, including AC power source, planar conductor, solid conductor and spy
This bracing wire circle；It is characterized in that：The anode in described AC power source connects planar conductor by solid conductor and constitutes wireless charging
Level platform；Wherein vertical range of the bottom of Tesla coil between planar conductor is less than or equal to 5 centimetres；Tesla coil
The horizontal range at bottom and planar conductor edge be less than or equal to 5 centimetres；Load be connected with the top of Tesla coil, load and
The coil turn of Tesla coil connection accounts for the 1/5 of Tesla coil total number of turns；
Wherein the frequency in AC power source is equal to the resonant frequency of Tesla coil.
2. a kind of wireless power supply transmitted based on single line electric energy according to claim, it is characterised in that：Tesla
The resonant frequency of coil is obtained by calculating the inductance and parasitic capacitance of coil, and the meter of parasitic capacitance and stray inductance is given below
Calculate formula：
The stray inductance calculation formula of Tesla coil is：
<mrow>
<mi>L</mi>
<mo>=</mo>
<mi>k</mi>
<mfrac>
<mrow>
<msup>
<mi>&mu;N</mi>
<mn>2</mn>
</msup>
<mi>s</mi>
</mrow>
<mi>h</mi>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein
<mrow>
<mi>k</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mn>2.301</mn>
<mi>h</mi>
</mrow>
<mrow>
<mn>2</mn>
<mi>R</mi>
<mo>+</mo>
<mn>2.31</mn>
</mrow>
</mfrac>
<mo>,</mo>
</mrow>
μ is magnetic conductivity in vacuum, and N is the coiling number of turn, and s is solenoid cross-sectional area, and h is solenoid coiling height, and R is solenoid
Radius.
The parasitic capacitance calculation formula of Tesla coil is：
<mrow>
<mi>C</mi>
<mo>=</mo>
<mn>2.3</mn>
<mo>&times;</mo>
<msup>
<mi>&pi;</mi>
<mn>2</mn>
</msup>
<mo>&CenterDot;</mo>
<msub>
<mi>&epsiv;</mi>
<mn>0</mn>
</msub>
<mo>&CenterDot;</mo>
<mi>R</mi>
<mo>&times;</mo>
<mrow>
<mo>(</mo>
<mn>0.0563</mn>
<mo>&times;</mo>
<mi>h</mi>
<mo>/</mo>
<mi>R</mi>
<mo>+</mo>
<mn>0.08</mn>
<mo>+</mo>
<mn>0.38</mn>
<msqrt>
<mrow>
<mi>R</mi>
<mo>/</mo>
<mi>h</mi>
</mrow>
</msqrt>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein h=N (w+d), ε0=8.85 × 10-12, w be spiral linear diameter, d be turn-to-turn away from.
Formula is calculated by resonant frequency again
<mrow>
<mi>f</mi>
<mo>=</mo>
<mfrac>
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<mn>2</mn>
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<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
</mrow>
The self-resonant frequency of Tesla coil can be calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560897.7A CN107231043A (en) | 2017-07-11 | 2017-07-11 | A kind of wireless power supply transmitted based on single line electric energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560897.7A CN107231043A (en) | 2017-07-11 | 2017-07-11 | A kind of wireless power supply transmitted based on single line electric energy |
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| Publication Number | Publication Date |
|---|---|
| CN107231043A true CN107231043A (en) | 2017-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710560897.7A Pending CN107231043A (en) | 2017-07-11 | 2017-07-11 | A kind of wireless power supply transmitted based on single line electric energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599393A (en) * | 2018-05-03 | 2018-09-28 | 河南师范大学 | The equal length receiving coil design method that efficient radio can transmit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103875158A (en) * | 2011-08-04 | 2014-06-18 | M·班克 | A single-wire electric system |
| JP2016101053A (en) * | 2014-11-26 | 2016-05-30 | 日本電気株式会社 | Device, system and method for power transmission |
| CN105958477A (en) * | 2016-05-16 | 2016-09-21 | 大连理工大学 | Method for automatically determining optimum working frequency of single-line electric energy transmission system |
| CN106208413A (en) * | 2016-07-20 | 2016-12-07 | 大连理工大学 | A kind of single conductor utilizing space resonance electric field and wireless hybrid electrical power transmission system |
-
2017
- 2017-07-11 CN CN201710560897.7A patent/CN107231043A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103875158A (en) * | 2011-08-04 | 2014-06-18 | M·班克 | A single-wire electric system |
| JP2016101053A (en) * | 2014-11-26 | 2016-05-30 | 日本電気株式会社 | Device, system and method for power transmission |
| CN105958477A (en) * | 2016-05-16 | 2016-09-21 | 大连理工大学 | Method for automatically determining optimum working frequency of single-line electric energy transmission system |
| CN106208413A (en) * | 2016-07-20 | 2016-12-07 | 大连理工大学 | A kind of single conductor utilizing space resonance electric field and wireless hybrid electrical power transmission system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599393A (en) * | 2018-05-03 | 2018-09-28 | 河南师范大学 | The equal length receiving coil design method that efficient radio can transmit |
| CN108599393B (en) * | 2018-05-03 | 2021-04-20 | 河南师范大学 | Design method of equal-length receiving coil for efficient wireless power transmission |
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Application publication date: 20171003 |