CN102738906A - Wireless power transmission apparatus - Google Patents
Wireless power transmission apparatus Download PDFInfo
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- CN102738906A CN102738906A CN2011100965203A CN201110096520A CN102738906A CN 102738906 A CN102738906 A CN 102738906A CN 2011100965203 A CN2011100965203 A CN 2011100965203A CN 201110096520 A CN201110096520 A CN 201110096520A CN 102738906 A CN102738906 A CN 102738906A
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Abstract
The invention discloses a wireless power transmission apparatus, and belongs to the technical field of electromagnetic field. The wireless energy transmission device comprises a transmitting device and a receiving device. The transmitting device comprises an energy generation circuit, two sets or more than two sets energy excitation coils and energy transmitting coils. The number of the energy transmitting coils is the same with that of the energy excitation coils. The energy transmitting coils are disposed among the energy excitation coils and are arranged parallel with the energy excitation coils. A plurality of energy excitation coils being as whole is connected with the energy generation circuit in series. When two sets of the energy transmitting coils are provided, the energy transmitting coils are disposed separately on two sides of the receiving device. When three sets or more sets of the energy transmitting coils are provided, the energy transmitting coils are disposed separately around the receiving device, and the energy transmitting coils and energy receiving coils of the receiving device are arranged parallel with each other. The device can generate relative stronger magnetic field among the energy transmitting coils, and effectively increase a distance of energy transmission. The device increases energy transmission efficiency when the energy is transmitted to a same distance, and when the energy transmission efficiency is constant, the device increase the distance of energy transmission.
Description
Technical field
The invention belongs to the electromagnetic field technology field, particularly relate to wireless electric energy transmission device.The present invention is used in the medical electronics apparatus of work in the human body, like capsule endoscope, implanted electric stimulator etc.
Background technology
" wireless power transmission " but be to utilize a kind of special installation to change the electric energy of power supply the energy of radio transmission into, again this energy is transformed back into electric energy at receiving terminal, thus to the electrical appliance wireless power.Traditional wireless power transmission adopts following two technology usually.(1) electromagnetic induction principle.Two coils are positioned on the close position, when electric current when a coil midstream is moving, the magnetic flux that is produced becomes media, causes also producing in another coil electromotive force.(2) electromagnetic wave energy can be basic identical through the principle and the broadcast receiver principle of antenna transmission and reception.The limitation of these two technology is: can't in larger distance, obtain higher energy transmission efficiency.In recent years; Close coupling magnetic resonance (Strongly Coupled Magnetic Resonances) theory by Massachusetts Institute of Technology's proposition; Tentatively solved " wireless power transmission " and can't take into account remote and high efficiency problem; But based on this theoretical wireless energy transfer system, adopt usually physical dimension bigger and identical transmit and receive coil, be difficult to use in the medical electronics apparatus of in human body, working.
Summary of the invention
To the technical problem of above-mentioned existence, the present invention provides a kind of wireless electric energy transmission device, and it adopts the magnetic resonance principle, has increased the distance of power transfer.
The present invention includes emitter and receiving system; Said emitter comprises power generation circuit, two groups or more energy excitation coil and energy transmitting coil; Said energy transmitting coil quantity is identical with the quantity of energy excitation coil, and said energy transmitting coil places between the energy excitation coil, and parallel placement arranged side by side with the energy excitation coil; Said a plurality of energy excitation coil is connected in series with power generation circuit as a whole; When said energy transmitting coil is two groups, the receiving system both sides that are placed in, said energy transmitting coil is three groups or more for a long time; Be placed in around the receiving system, and parallel being set up in parallel of energy receiving coil of energy transmitting coil and receiving system.
Described receiving system comprises energy receiving coil, energy recovery coil and energy recovery circuit, and said energy recovery coil is connected with energy recovery circuit, and the energy receiving coil is set up in parallel with the energy recovery coil is parallel.Described energy receiving coil is parallel with electric capacity.Described energy transmitting coil is parallel with electric capacity.Said energy excitation coil is two or more parallelly connected, measure-alike or different metallic coils.The electricity resonance frequency of the frequency of the energy signal that described power generation circuit produced, energy transmitting coil, the electricity resonance frequency of energy receiving coil are identical.
The excitation coil of energy described in the present invention also can be made up of two or more series connection, measure-alike or different metallic coil.
The present invention has following advantage:
1. energy excitation coil of the present invention adopts same power generation circuit, and having avoided different-energy to produce circuit needs synchronous problem.
2. an energy excitation coil of the present invention and an energy transmitting coil are one group, adopt two groups or more parallel connection, between two groups or more energy transmitting coil, can produce strong and uniform magnetic field, have effectively increased the distance of power transfer.Compare with the energy transmitting coil with single group energy excitation coil, when remote, under the prerequisite of same distance, the efficient that the coil of this structure can energization transmits; Keeping under the constant prerequisite of energy transmission efficiency, the coil of this structure is the distance of energization transmission effectively.If the electricity resonance frequency of energy transmitting coil and energy receiving coil is identical; Then need be on energy transmitting coil and energy receiving coil shunt capacitance; Otherwise, need on energy transmitting coil and energy receiving coil, be parallel with electric capacity respectively, make both electricity resonance frequencys identical.
3. energy receiving coil of the present invention and energy recovery coil size are applicable to the wireless electric energy transmission device of medical electronics apparatuses such as capsule endoscope, implanted electric stimulator less than energy excitation coil and energy transmitting coil.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is the structural representation of energy excitation coil parallel connection of the present invention.
Fig. 3 is the structural representation of energy excitation coil series connection of the present invention.
Among the figure: 1. energy excitation coil, 2. energy transmitting coil, 3. energy receiving coil, 4. energy recovery coil.
Embodiment
Specify the present invention below in conjunction with embodiment and accompanying drawing.
Embodiment 1: as shown in Figure 1, the present invention includes emitter and receiving system, like Fig. 1, shown in Figure 2; Said emitter comprises power generation circuit, two groups or more energy excitation coil 1 and energy transmitting coil 2; Said energy transmitting coil 2 quantity are identical with the quantity of energy excitation coil 1, said energy transmitting coil 2 respectively with the 1 parallel placement arranged side by side of energy excitation coil, and between energy excitation coil 1; Said energy excitation coil 1 is connected in series with power generation circuit; When said energy transmitting coil 2 is two groups, place the receiving system both sides respectively, said energy transmitting coil 2 is three groups or more for a long time; Be placed in around the receiving system, this example is selected two groups of energy excitation coils 1 and energy transmitting coil 2 for use; And energy receiving coil 3 parallel being set up in parallel of energy transmitting coil 2 and receiving system.
This routine said receiving system comprises energy receiving coil 3, energy recovery coil 4 and energy recovery circuit; Said energy recovery coil 4 is connected with energy recovery circuit; Energy receiving coil 3 and energy recovery coil 4 parallel being set up in parallel, said energy recovery circuit adopts the existing conventional regulator rectifier circuit.
This example is for to make the electricity resonance frequency of energy transmitting coil 2 and energy receiving coil 3 identical; Perhaps utilize the parasitic capacitance of energy transmitting coil 2 and energy receiving coil 3 itself, perhaps at described energy transmitting coil 2 and energy receiving coil 3 shunt capacitances respectively.
This routine described power generation circuit can be that various oscillators and power amplifier connect and compose, and the electricity resonance frequency of the frequency of the energy signal that it produced, energy transmitting coil 2, the electricity resonance frequency of energy receiving coil 3 are identical.Said energy excitation coil 1 is made up of two or more parallel connections, measure-alike or different metallic coil, and a plurality of coil is connected in parallel in the same loop with power generation circuit as a whole.
Power generation circuit produces the energy signal of fixed frequency, like sine wave signal.The frequency of its signal equals the electricity resonance frequency of energy transmitting coil 2.This frequency also is the electricity resonance frequency of energy receiving coil 3.During whole system work, magnetic resonance takes place with energy receiving coil 3 in energy transmitting coil 2, transmits energy with higher efficient.
Embodiment 2: this example is identical with embodiment 1 overall structure, and different is: as shown in Figure 3, the energy excitation coil 1 of emitter described in this example is two or more series connection, measure-alike or different metallic coil.Said energy transmitting coil 2 is two groups or more, when being two groups, places the both sides of energy receiving coil 3 respectively, and said energy transmitting coil 2 is three groups or more for a long time, around the energy receiving coil 3 that is placed in.This example is selected two groups of energy excitation coils 1 and energy transmitting coil 2 for use.
Claims (7)
1. wireless electric energy transmission device; Comprise emitter and receiving system, it is characterized in that: said emitter comprises power generation circuit, two groups or more energy excitation coil and energy transmitting coil, and said energy transmitting coil quantity is identical with the quantity of energy excitation coil; Said energy transmitting coil places between the energy excitation coil; And parallel placement arranged side by side with the energy excitation coil, said a plurality of energy excitation coils are connected in series with power generation circuit as a whole, when said energy transmitting coil is two groups; The receiving system both sides are placed in; Said energy transmitting coil is three groups or more for a long time, around the receiving system that is placed in, and parallel being set up in parallel of energy receiving coil of energy transmitting coil and receiving system.
2. according to the said wireless electric energy transmission device of claim 1; It is characterized in that: described receiving system comprises energy receiving coil, energy recovery coil and energy recovery circuit; Said energy recovery coil is connected with energy recovery circuit, and the energy receiving coil is set up in parallel with the energy recovery coil is parallel.
3. according to the said wireless electric energy transmission device of claim 2, it is characterized in that: described energy receiving coil is parallel with electric capacity.
4. according to the said wireless electric energy transmission device of claim 1, it is characterized in that: described energy transmitting coil is parallel with electric capacity.
5. according to the said wireless electric energy transmission device of claim 1, it is characterized in that: said energy excitation coil is made up of two or more parallel connections, measure-alike or different metallic coil.
6. according to the said wireless electric energy transmission device of claim 1, it is characterized in that: said energy excitation coil is two or more series connection, measure-alike or different metallic coil.
7. according to the said wireless electric energy transmission device of claim 1, it is characterized in that: the electricity resonance frequency of the frequency of the energy signal that described power generation circuit produced, energy transmitting coil, the electricity resonance frequency of energy receiving coil are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100965203A CN102738906A (en) | 2011-04-15 | 2011-04-15 | Wireless power transmission apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100965203A CN102738906A (en) | 2011-04-15 | 2011-04-15 | Wireless power transmission apparatus |
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| Publication Number | Publication Date |
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| CN102738906A true CN102738906A (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100965203A Pending CN102738906A (en) | 2011-04-15 | 2011-04-15 | Wireless power transmission apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107771282A (en) * | 2015-06-22 | 2018-03-06 | 布利斯脱大学 | Wireless ultrasound wave sensor |
| CN108463163A (en) * | 2015-10-21 | 2018-08-28 | 诺伊斯佩拉医疗有限公司 | Devices, systems, and methods for stimulation therapy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340113A (en) * | 2008-08-08 | 2009-01-07 | 哈尔滨工业大学 | Magnet coupled resonant type wireless energy transmission equipment having intensifier |
| CN101904733A (en) * | 2010-05-24 | 2010-12-08 | 清华大学 | Wireless energy transmission system and method |
| CN202014138U (en) * | 2011-04-15 | 2011-10-19 | 中国科学院沈阳自动化研究所 | Radio energy transmission device |
-
2011
- 2011-04-15 CN CN2011100965203A patent/CN102738906A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340113A (en) * | 2008-08-08 | 2009-01-07 | 哈尔滨工业大学 | Magnet coupled resonant type wireless energy transmission equipment having intensifier |
| CN101904733A (en) * | 2010-05-24 | 2010-12-08 | 清华大学 | Wireless energy transmission system and method |
| CN202014138U (en) * | 2011-04-15 | 2011-10-19 | 中国科学院沈阳自动化研究所 | Radio energy transmission device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107771282A (en) * | 2015-06-22 | 2018-03-06 | 布利斯脱大学 | Wireless ultrasound wave sensor |
| US11927568B2 (en) | 2015-06-22 | 2024-03-12 | The University Of Bristol | Double inductance coils for powering wireless ultrasound transducers |
| CN107771282B (en) * | 2015-06-22 | 2024-04-19 | 布利斯脱大学 | Wireless ultrasonic sensor |
| CN108463163A (en) * | 2015-10-21 | 2018-08-28 | 诺伊斯佩拉医疗有限公司 | Devices, systems, and methods for stimulation therapy |
| US11129985B2 (en) | 2015-10-21 | 2021-09-28 | Neuspera Medical, Inc. | Devices, systems, and methods for stimulation therapy |
| US11964151B2 (en) | 2015-10-21 | 2024-04-23 | NeuSpera Medical Inc. | Devices, systems, and methods for stimulation therapy |
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Application publication date: 20121017 |