CN101645349B - Energy transmission system - Google Patents

Energy transmission system Download PDF

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Publication number
CN101645349B
CN101645349B CN2008101298192A CN200810129819A CN101645349B CN 101645349 B CN101645349 B CN 101645349B CN 2008101298192 A CN2008101298192 A CN 2008101298192A CN 200810129819 A CN200810129819 A CN 200810129819A CN 101645349 B CN101645349 B CN 101645349B
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China
Prior art keywords
resonator
electric energy
energy
external electric
coupling circuit
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Expired - Fee Related
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CN2008101298192A
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Chinese (zh)
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CN101645349A (en
Inventor
陈志荣
林志隆
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Darfon Electronics Corp
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Darfon Electronics Corp
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Abstract

The invention relates to an energy transmission system, which comprises a power supply end device, a first energy transmission device, a second energy transmission device and a device end device. The first energy transmission device comprises a first coupling circuit and a first resonator. The second energy transmission device comprises a second coupling circuit and a second resonator, and the second resonator is provided with a flat-wire solenoid structure. The first coupling circuit receives the electric energy supplied by the power supply end device, and the electric energy on the first coupling circuit is coupled to the second coupling circuit through the first resonator and the second resonator sequentially. Non-radiative energy transfer is performed between the first resonator and the second resonator. The device end device and the second coupling circuit form a loop to receive the electric energy on the second coupling circuit for providing driving electric energy to drive an electronic device.

Description

Energy transmission system
Technical field
The present invention relates to a kind of energy transmission system, and be particularly related to the energy transmission system of the resonator of a kind of application flat wire helix tube (Flat-wire Solenoid) structure.
Background technology
Traditionally, multiple Radio Transmission Technology is used in the communications field widely.Present Radio Transmission Technology major part is used on the reception of signal and sending, so can only reach lower powered signal transmission mostly.
Because use the electronic product of Radio Transmission Technology more and more, the exploitation that reaches more high-power transmission technology by wireless transmission method more and more comes into one's own.U.S. Patent Publication No. 2007/0222542 discloses a kind of wireless power transmission (Wireless Power Transfer that can wirelessly carry out power transfer, WPT) wireless non-radiative energy translator, with the electric energy of a resonator, be passed to another resonator in the mode that resonates.
Yet this kind translator shifts (Non-radiative Energy Transfer) via non-radiative energy and comes transmission of power, so, must use the lower resonator of resonance frequency and just can reach certain efficiency of transmission.Yet such resonator is bulky and with high costs, is difficult to be applied in the general electronic product.Therefore, how designing the little and energy transfer system that still have a lower resonance frequency of volume is one of direction of constantly endeavouring of industry.
Summary of the invention
The present invention relates to a kind of energy transmission system, it uses the resonator of flat wire helix tube (Flat-wire Solenoid) structure, compared to the conventional energy transmission system, the energy transmission system that the present invention proposes has that volume is less, resonance frequency is low and the energy conversion efficiency advantage of higher.
Propose a kind of energy transmission system according to the present invention, in order to drive electronics, energy transmission system comprises power end device, first, second energy transform device and device end device.The power end device is in order to provide first external electric energy.First energy transform device comprises first coupling circuit and first resonator.First coupling circuit and power end device form the loop, to receive first external electric energy.First external electric energy on first coupling circuit is coupled to first resonator, makes first resonator have first internal electric energy.Second energy transform device comprises second resonator and second coupling circuit.Second resonator has flat wire helix tube (Flat-wire Solenoid) structure, second resonator has identical in fact resonance frequency with first resonator, carry out non-radiative energy between first and second resonator and shift (Non-radiative Energy Transfer), make second resonator have second internal electric energy.Second internal electric energy on second resonator is coupled to second coupling circuit, makes second coupling circuit have second external electric energy.Device end device and second coupling circuit form the loop, receiving second external electric energy, and provide according to this and drive the electric energy drive electronics.
Propose a kind of energy transmission system according to the present invention, in order to drive electronics, energy transmission system comprises power end device, first, second energy transform device and device end device.The power end device is in order to provide first external electric energy.First energy transform device comprises first coupling circuit and first resonator.First coupling circuit and power end device form the loop, to receive first external electric energy.First resonator has the flat wire spiral tube structure, and first external electric energy on first coupling circuit is coupled to first resonator, makes first resonator have first internal electric energy.Second energy transform device comprises second resonator and second coupling circuit.Second resonator has identical in fact resonance frequency with first resonator, carries out non-radiative energy between first and second resonator and shifts, and makes second resonator have second internal electric energy.Second internal electric energy on second resonator is coupled to second coupling circuit, makes second coupling circuit have second external electric energy.Device end device and second coupling circuit form the loop, receiving second external electric energy, and provide according to this and drive the electric energy drive electronics.
For foregoing of the present invention can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 is the calcspar that illustrates according to the energy transmission system of the embodiment of the invention.
Fig. 2 is the structure chart that illustrates the resonator Rs2 of Fig. 1.
Fig. 3 A and Fig. 3 B are the structure charts that illustrates the resonator Rs2 of Fig. 1.
[main element symbol description]
10: energy transmission system
12: the power end device
14,16: energy transform device
14a, 16a: coupling circuit
Rs1, Rs2, Rs2 ': resonator
18: device end device
20: electronic installation
Ed1, Ed2: end points
Embodiment
The energy transmission system of present embodiment is used the resonator of flat wire helix tube (Flat-wire Solenoid) structure.
Please refer to Fig. 1, it illustrates the calcspar according to the energy transmission system of the embodiment of the invention.Energy transmission system 10 is in order to drive electronics 20.Electronic installation 20 is preferably portable electric device.For instance, electronic installation 20 is a mobile phone.Energy transmission system 10 comprises power end device 12, energy transform device 14,16 and device end device 18.
Power end device 12 is in order to provide external electric energy Pex1.For instance, power end device 12 comprises power supply circuit 12a, and it for example is an ac current source, in order to be converted to AC energy Pac according to DC power supply.Power end device 12 more for example comprises impedance matching circuit 12b, in order to reception AC energy Pac, and provides external electric energy Pex1 accordingly.
Energy transform device 14 comprises coupling circuit 14a and resonator Rs1.Coupling circuit 14a be coupled to power end device 12 and with its formation loop, to receive external electric energy Pex1.External electric energy Pex1 on the coupling circuit 14a is coupled to resonator Rs1, makes resonator Rs1 have internal electric energy Pin1.
Energy transform device 16 comprises coupling circuit 16a and resonator Rs2, and wherein resonator Rs2 has a flat wire spiral tube structure, as shown in Figure 2.Lead with resonator Rs2 of flat wire spiral tube structure is a ribbon conductor.The near field of resonator Rs1 and Rs2 (Non-radiative Field) intercouples, and makes that carrying out non-radiative energy between resonator Rs1 and the Rs2 shifts (Non-radiative Energy Transfer).So, make resonator Rs2 have internal electric energy Pin2.Preferably, resonator Rs2 has identical in fact resonance frequency with resonator Rs1, makes that the energy coupling between resonator Rs1 and Rs2 has preferable efficient.
Electric energy on the resonator Rs2 also is coupled to coupling circuit 16a, makes coupling circuit 16a have external electric energy Pex2.Device end device 18 forms the loop with coupling circuit 16a, drives electric energy Pd drive electronics 20 to receive and to provide.For instance, device end device 18 comprises impedance matching circuit 18a, in order to receive external electric energy Pex2 and output.Device end device 18 also comprises rectification circuit 18b, in order to external electric energy Pex2 is carried out rectification, so that the driving electric energy Pd drive electronics 20 of direct current to be provided.
The resonator Rs2 of present embodiment has the flat wire spiral tube structure, and its lead is a ribbon conductor.Compared to the round conductor of traditional resonator (having the round conductor spiral tube structure), ribbon conductor has bigger sectional area.So, under the identical condition of volume, have the interact equivalent capacitance value that produces of each coil in the resonator of flat wire spiral tube structure and be higher than the equivalent capacitance value of traditional resonator.Moreover, according to general resonator general formula:
f o = 1 2 π × 1 L × C
As can be known, the resonance frequency f of resonator O-Along with the lifting of the equivalent capacitance value L of resonator and equivalent inductance value C and reduce.So as can be known, under the identical condition of volume, the resonator with flat wire spiral tube structure has lower resonance frequency.
In addition, has lower resonance frequency f owing to have the resonator Rs1 and the Rs2 of flat wire spiral tube structure o, direct current energy and the conversion operations between AC energy that power supply circuit 12a and rectification circuit 18b carry out have preferable energy conversion efficiency.
As can be known, the energy transmission system of present embodiment is used the non-radiative energy that the resonator with flat wire spiral tube structure carries out between resonator and resonator and is shifted more than comprehensive.So, compared to the energy transmission system of using traditional resonator, the energy transmission system of present embodiment has that volume is less, resonance frequency is low and the energy conversion efficiency advantage of higher.
In the present embodiment, though the situation that has a flat wire spiral tube structure as shown in Figure 2 with resonator Rs2 is that example explains, yet resonator Rs2 is not limited to have structure as shown in Figure 2.For instance, the structure of resonator Rs2 also can be shown in Fig. 3 A and 3B.In Fig. 3 A and 3B, the lead of resonator Rs2 ' has end points Ed1 and Ed2, and the axis direction of the resonator Rs2 ' of all past flat wire spiral tube structure of end points Ed1 and Ed2 folds into.
In the present embodiment, though be that the situation with resonator of flat wire spiral tube structure is that example explains only with the resonator Rs2 in the energy transform device 16, the energy transmission system 10 of present embodiment is not limited thereto.For instance, also resonator Rs1 is the resonator of flat wire spiral tube structure according to this, and resonator Rs2 has traditional resonator structure, or resonator Rs1 and Rs2 are all the resonator with flat wire spiral tube structure.
Analog result
The diameter of supposing the sectional area of wire of traditional circular helix tube resonator is 1.4 millimeters (Millimeter, mm), the live width of the ribbon conductor of the resonator of the flat wire spiral tube structure of present embodiment (it for example has structure shown in Figure 2) is 3mm, and the coil outer diameter of the resonator of traditional circular helix tube resonator and flat wire spiral tube structure is 3.5 centimeters (Centimeter, cm), coil height is 2cm.
Simulate according to aforementioned condition, the resonance frequency that obtains traditional circular helix tube resonator is that (Mega Hertz, MHz), the resonance frequency of the resonator of the flat wire spiral tube structure of this enforcement is 20MHz to 32.8 MHz.According to this analog result as can be known, under the identical situation of volume, the resonator of the flat wire spiral tube structure of present embodiment have the direct current that resonance frequency is low and supply unit is performed and exchange between the energy conversion efficiency advantage of higher.
If identical simulated conditions (live width that promptly is ribbon conductor is 3mm, and coil outer diameter is 3.5cm, and coil height is 2cm) are applied on the resonator of flat wire spiral tube structure as described in Figure 3, then simulating the resonance frequency that obtains is 15MHz.So, the two-end-point of the lead of the resonator of flat wire spiral tube structure can be folded into to the axle center of the resonator of flat wire spiral tube structure, can further reduce the resonance frequency of the resonator of flat wire spiral tube structure.
In sum, though the present invention with a preferred embodiment openly as above, so it is not in order to limit the present invention.Those skilled in the art of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking the appended claims person of defining.

Claims (14)

1. energy transmission system, in order to drive an electronic installation, this energy transmission system comprises:
One power end device is in order to provide one first external electric energy;
One first energy transform device comprises:
One first coupling circuit forms the loop with this power end device, to receive this first external electric energy; And
One first resonator, this first external electric energy on this first coupling circuit is coupled to this first resonator, makes this first resonator have one first internal electric energy;
One second energy transform device comprises:
One second resonator, has a flat wire spiral tube structure, this second resonator has identical in fact resonance frequency with this first resonator, this first and this second resonator between carry out non-radiative energy and shift, make this second resonator have one second internal electric energy; And
One second coupling circuit, this second internal electric energy on this second resonator is coupled to this second coupling circuit, makes this second coupling circuit have one second external electric energy; And
One device end device forms the loop with this second coupling circuit, receiving this second external electric energy, and provides one to drive electric energy and drive this electronic installation according to this.
2. energy transmission system as claimed in claim 1, wherein the lead of this flat wire helix tube has a band-like surface, and the normal of this band-like surface is parallel in fact each other each other with the axle center line stretcher of this flat wire helix tube.
3. energy transmission system as claimed in claim 2, wherein the lead of this flat wire helix tube has one first end and one second end, and this first end and all past this axis direction invagination of this second end.
4. energy transmission system as claimed in claim 1, wherein this first resonator has a flat wire spiral tube structure, the lead of the flat wire helix tube of this first resonator has a band-like surface, and the normal of this band-like surface is parallel in fact each other each other with the axle center line stretcher of the flat wire helix tube of this first resonator.
5. energy transmission system as claimed in claim 4, wherein the lead of the flat wire helix tube of this first resonator has one first end and one second end, and this first end and all past this axis direction invagination of this second end.
6. energy transmission system as claimed in claim 1, wherein this power end device comprises:
One power supply circuit is in order to provide this first external electric energy; And
One impedance matching circuit in order to receiving this first external electric energy that this power supply circuit provides, and is exported this first external electric energy to this first coupling circuit.
7. energy transmission system as claimed in claim 1, wherein this device end device comprises:
One impedance matching circuit in order to receiving this second external electric energy that this second coupling circuit provides, and is exported this second external electric energy;
One rectification circuit in order to this second external electric energy is carried out rectification, drives this electronic installation so that this driving electric energy to be provided.
8. energy transmission system, in order to drive an electronic installation, this energy transmission system comprises:
One power end device is in order to provide one first external electric energy;
One first energy transform device comprises:
One first coupling circuit forms the loop with this power end device, to receive this first external electric energy; And
One first resonator has a flat wire spiral tube structure, and this first external electric energy on this first coupling circuit is coupled to this first resonator, makes this first resonator have one first internal electric energy;
One second energy transform device comprises:
One second resonator has identical in fact resonance frequency with this first resonator, this first and this second resonator between carry out non-radiative energy and shift, make this second resonator have one second internal electric energy; And
One second coupling circuit, this second internal electric energy on this second resonator is coupled to this second coupling circuit, makes this second coupling circuit have one second external electric energy; And
One device end device forms the loop with this second coupling circuit, receiving this second external electric energy, and provides one to drive electric energy and drive this electronic installation according to this.
9. energy transmission system as claimed in claim 8, wherein the lead of this flat wire helix tube has a band-like surface, and the normal of this band-like surface is parallel in fact each other each other with the axle center line stretcher of this flat wire helix tube.
10. energy transmission system as claimed in claim 9, wherein the lead of this flat wire helix tube has one first end and one second end, and this first end and all past this axis direction invagination of this second end.
11. energy transmission system as claimed in claim 8, wherein this second resonator has a flat wire spiral tube structure, the lead of the flat wire helix tube of this second resonator has a band-like surface, and the normal of this band-like surface is parallel in fact each other each other with the axle center line stretcher of the flat wire helix tube of this second resonator.
12. energy transmission system as claimed in claim 11, wherein the lead of the flat wire helix tube of this second resonator has one first end and one second end, and this first end and all past this axis direction invagination of this second end.
13. energy transmission system as claimed in claim 8, wherein this power end device comprises:
One power supply circuit is in order to provide this first external electric energy; And
One impedance matching circuit in order to receiving this first external electric energy that this power supply circuit provides, and is exported this first external electric energy to this first coupling circuit.
14. energy transmission system as claimed in claim 8, wherein this device end device comprises:
One impedance matching circuit in order to receiving this second external electric energy that this second coupling circuit provides, and is exported this second external electric energy;
One rectification circuit in order to this second external electric energy is carried out rectification, drives this electronic installation so that this driving electric energy to be provided.
CN2008101298192A 2008-08-07 2008-08-07 Energy transmission system Expired - Fee Related CN101645349B (en)

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Application Number Priority Date Filing Date Title
CN2008101298192A CN101645349B (en) 2008-08-07 2008-08-07 Energy transmission system

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Application Number Priority Date Filing Date Title
CN2008101298192A CN101645349B (en) 2008-08-07 2008-08-07 Energy transmission system

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CN101645349B true CN101645349B (en) 2011-12-14

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Publication number Priority date Publication date Assignee Title
JP5687719B2 (en) * 2013-01-31 2015-03-18 トヨタ自動車株式会社 Power receiving device, power transmitting device, and power transmission system

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