TW200941889A - A wireless power transmission system - Google Patents

A wireless power transmission system Download PDF

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Publication number
TW200941889A
TW200941889A TW97110388A TW97110388A TW200941889A TW 200941889 A TW200941889 A TW 200941889A TW 97110388 A TW97110388 A TW 97110388A TW 97110388 A TW97110388 A TW 97110388A TW 200941889 A TW200941889 A TW 200941889A
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TW
Taiwan
Prior art keywords
power transmission
wireless power
transmission system
tube
microwave signal
Prior art date
Application number
TW97110388A
Other languages
Chinese (zh)
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TWI366320B (en
Inventor
Da-Sheng Li
zhi-sheng Chen
Yuan-Zhang Xu
liang-zheng Zhang
Original Assignee
Da-Sheng Li
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Publication date
Application filed by Da-Sheng Li filed Critical Da-Sheng Li
Priority to TW097110388A priority Critical patent/TWI366320B/en
Publication of TW200941889A publication Critical patent/TW200941889A/en
Application granted granted Critical
Publication of TWI366320B publication Critical patent/TWI366320B/en

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Abstract

A wireless power transmission system is disclosed, which includes a electricity output device, a receiving antennas, and a magnetohydrodynamic power generator, wherein the electricity output device transforms an electricity signal into a microwave signal and outputs the microwave signal, the receiving antennas receives the microwave signal from the electricity output device, and the magnetohydrodynamic power generator connected with the receiving antennas transforms the microwave signal into an electrical power. Since microwave signal can transmit its energy well in distance, the disclosed wireless power transmission system can transmit electricity without using any electric wire. In addition, the receiving antennas of the disclosed wireless power transmission system can receive microwave signal dissipated in the environment, and recover the energy carried by the microwave signal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless power transmission system, and more particularly to a wireless power transmission system that transmits power through microwaves and is simultaneously applicable to recovering environmental energy. [Prior Art] Today's power equipment is mainly connected by wires, so that power can be transmitted to an electronic device for use. In recent years, many studies have attempted to develop 10 wireless energy transmission systems in an attempt to supply power to drive electronic devices without the need for physical connections (such as wires). In addition, due to the effect and efficiency of microwave transmission of information and energy, many information can be transmitted through microwaves, such as satellite signal transmission, wireless communication systems and wireless network systems. Therefore, the environment is filled with various 15 power microwaves. However, not all microwaves in the environment will be used, and some microwave energy that is not used in the environment will cause the output of micro-G 纟 (4). Therefore, if these microwave energy that is scattered in the environment can be recycled, it will be helpful for the current trend of energy conservation. 20 In recent years, the popularity of portable computers and the Internet have gradually become widely used, and wireless network base stations have been set up one after another. Therefore, if the microwave energy emitted by the base station and spurted in the environment can be utilized to recover the power used by the wireless network base station, energy conservation will be achieved. 5 200941889 · 'In the past', the way to recover microwave energy is through the RLC oscillator circuit. However, the RLC oscillator circuit must filter the carrier before recovering energy, which removes most of the microwave energy from the original carrier. At the same time, because of the impedance characteristic of the RLC oscillating circuit, the efficiency of recovering 5 microwave energy through the RLC oscillating circuit has not been high. Therefore, if a system capable of utilizing the characteristics of microwaves having good transfer energy efficiency can be developed, the effect of wireless power transmission can be achieved through microwaves. In addition, if the system can recover the stray microwave energy in the environment and convert it into electricity, it can achieve the purpose of energy recovery at the same time. [Disclosure] The main object of the present invention is to provide a wireless power transmission system capable of transmitting power through microwaves while achieving the effect of recovering microwave energy in an environment. In order to achieve the above object, the present invention provides a wireless power transmission system that includes: a power output device, a receiver, and a fluid generator. The power output device is configured to convert the power into a microwave signal and output the microwave signal; the receiver is configured to receive the microwave signal output by the power output device; and the fluid generator is connected to the receiver. Wherein, the fluid generator comprises: a resonant cavity, a storage tank, a flow unit, a magnetic field generating unit, a first transfer tube, a second transfer tube, and a power transmission element and a resonant cavity and a storage tank The first transfer tube and the first transfer tube form a closed space for the flow unit to flow in the closed space. Furthermore, the first transmission tube is connected to the resonant cavity and the storage tank, and the flow Cui 6 200941889 element flows from the resonant cavity to the storage tank through the first transfer tube. The magnetic field generating unit of the fluid generator is disposed around the first transfer tube to provide a magnetic field to the flow unit. On the other hand, the second transfer tube connects the storage tank and the resonance chamber, and the flow unit 流动 flows from the storage tank to the common vibration chamber through the second transfer tube. At the same time, the power transmission component of the fluid generator passes through the first transmission pipe and derives the power generated by the flow generator. Therefore, the wireless power transmission system of the present invention can transmit the power to the microwave signal through the power transmission device. The form output, and then the microwave signal is transmitted to the fluid generator by the receiver 以, so that the fluid generator re-converts the micro 10 wave signal into electric power, and uses the power transmission component to derive the electric power to apply the derived (four) force to the electron Device. Therefore, the wireless power transmission system of the present invention can transmit power from a power transmission device to an electronic device without using a material connection (e.g., a wire). At the same time, the receiver of the radio transmission system of the present invention can simultaneously receive microwave energy in the environment, and 15 converts the microwave energy in the environment received by the receiver into electricity through the fluid generator. Therefore, the wireless power transmission system of the present invention can also achieve the energy recovery efficiency. 8 In the wireless power transmission system of the present invention, the resonant cavity, the storage tank, the first transmission tube, and the second transmission tube of the fluid generator are formed. The air pressure in the airtight 20 is preferably less than 1 〇-2pa. In the wireless power transmission system of the present month, the direction of the magnetic field generated by the magnetic field generated by the fluid generator is not parallel to the flow direction of the flow unit in the first transfer tube; and preferably the direction of the magnetic field generated by the generating unit The flow direction of the flow unit in the first transfer tube is perpendicular to each other. This 7 200941889 outer magnetic field generating unit of the (10) body generator can be any element capable of generating a magnetic field, and is preferably a neodymium iron boron magnet. 5 ❹ 10 15 ❹ In the wireless power transmission system of the present invention, the power transmitting element of the fluid generator is preferably a wire covered with an insulating layer. Furthermore, the length direction of the wire (power transmission element) coated with the insulating layer, the direction of the magnetic field generated by the magnetic field generating unit, and the flow direction of the flow unit in the first transfer tube are not parallel to each other; Preferably, the three are perpendicular to each other. In the wireless power transmission system of the present invention, the first transmission tube of the fluid generator may further include a nozzle and a straight tube, and the nozzle is connected to the resonant chamber, and the straight tube is connected to the storage tank. Further, in the first transfer tube of the fluid generator, the aperture of the nozzle-to-resonator connection portion is larger than the aperture of the nozzle-to-straight tube connection portion. In the wireless power transmission system of the present invention, the material of the first transmission tube of the fluid generator may be an insulating material, and is preferably acryl. In the wireless power transmission system of the present invention, the flow unit of the fluid generator may be an aqueous electrolyte solution, and is preferably an aqueous solution of vaporized sodium or an aqueous solution of magnesium telluride. In the wireless power transmission system of the present invention, the frequency of the (four) wave signal outputted by the power transmission device of the fluid generator is not limited, and preferably the frequency of the microwave signal is 2.45 GHz. In the wireless power transmission system of the present invention, the receiver can be any device capable of receiving microwave signals, and is preferably a horn antenna. [Embodiment] 20 200941889 5 Ο 10 15 Ο FIG. 1 is a schematic diagram of a wireless power transmission system of the present invention. In the preferred embodiment of the present invention, the wireless power transmission system includes: a power output device 10, a receiver 11, and a fluid generator 12. The power output device 10 is configured to convert power into a microwave signal and output the microwave signal, and the receiver 11 is configured to receive the microwave signal output by the power output device 1; and the fluid generator 12 and the receiver 丨丨 Connected. As shown in FIG. 1 , in this embodiment, the fluid generator 12 includes a resonant cavity 121 , a storage slot 122 , a flow unit 123 , a magnetic field generating unit 124 , a first transfer tube 125 , and a second transmission . Tube i 26, and a power transfer element 127. The resonant cavity 12, the storage tank 122, the first transfer tube 125, and the second transfer tube 126 form a closed space, so that the flow unit 123 flows in the sealed space. Furthermore, the first transfer tube 125 is connected to the resonant cavity 121 and the storage tank 122, and the flow unit 123 flows from the resonance chamber 121 into the storage tank 122 through the first transfer tube 125. The magnetic field generating unit 124 of the fluid generator 12 is disposed around the first transfer tube 125 to apply a magnetic field to the flow unit 125. On the other hand, the second transfer tube 126 connects the storage tank 122 and the resonance chamber 121, and the flow unit 123 flows from the storage tank 122 into the resonance chamber 121 through the second transfer tube 126. At the same time, the power transfer component 127 of the fluid generator 12 passes through the first transfer tube 125 to direct the electrical power generated by the fluid generator 12 to an electronic device (not shown). In order to optimize the effect of the microwave signal transmission, in the present embodiment, the receiver 11 of the wireless power transmission system employs a horn antenna. Meanwhile, if the power output device 10 also transmits the microwave signal by using the horn antenna, then 20 200941889 - the wireless power transmission system of the embodiment can achieve the effect of transmitting the microwave signal point-to-point. Further, the flow unit 123 of the fluid generator 12 of the wireless power transmission system may be any electrically conductive electrolyte solution, and is preferably a vaporized sodium water solution or an oxidized aqueous solution. In the present embodiment, the flow unit 123 is an aqueous solution of vaporized sodium. When the receiver 11 of the wireless power transmission system of the present embodiment receives the microwave signal, 'the frequency of the microwave signal (2.45 GHz) coincides with the resonance frequency of the flow unit 123 (vaporized aqueous solution), so the resonant cavity 121 The flow 10 in the early element 123 can break the hydrogen bond between the water molecules by the principle of resonance to form vaporized water molecules. That is to say, the flow unit 123 (vaporized sodium aqueous solution) flows from the resonant cavity 121 to the first transfer tube 125 ° in the form of a gas phase plus a liquid phase. Further, in the wireless transmission system of the present embodiment, the fluid The first transfer tube 125 of the generator 12 15 further includes a nozzle 1251 and a straight tube 1252, and the nozzle 1251 is connected to the resonant cavity 121, and the straight tube 1252 is connected to the storage tank 122. In addition, in the first transfer tube 125 of the fluid generator 12 of the present embodiment, the aperture of the connecting portion of the nozzle 1251 and the resonant cavity 121 is larger than the diameter of the connecting portion of the nozzle 1251 and the straight tube 1252, and thus the nozzle 1251 and the straight tube 1252 The connecting portion of 20 forms a tapered section. Thus, when the flow unit 123 flows from the resonant cavity 121 into the storage tank 122 through the first transfer tube 125 in a gas phase plus a liquid state, the fluid unit 123 passes through the first portion having a tapered section at a high speed. The transfer tube 125 reaches the storage tank 122. At the same time, in order to enable the fluid power generator 12 of the wireless power transmission system to have better power conversion efficiency 'to make the microwave signal more rapidly vaporize the flow unit 123, in the fluid power generator 12 of the wireless power transmission system of the present embodiment' The air pressure of the sealed space formed by the resonant cavity 121, the storage tank 122, the first transfer pipe 125, and the second transfer pipe 126 is lower than 丨〇-2Pa. Thus, the wireless transmission system of the present embodiment can avoid the temperature increase of the flow unit 12 3 during the vaporization process, causing some of the microwave signals to be converted into heat energy and lost. ❹ 10 15 ❹ 20 When the flow unit 123 located in the storage tank 122 reaches a certain amount, the flow unit 123 flows back to the resonant cavity 121 through the second transfer pipe 126, so that the resonant cavity 121 can maintain a certain number of flow cells 123 therein. For the vaporization process of the former ^. On the other hand, in the wireless power transmission system of the embodiment, the magnetic field unit 124 of the fluid generator 12 is a neodymium iron boron magnet, and the magnetic field unit 124 is disposed in the straight tube 1252 of the first transmission tube 125. A transmission tube (2) is made of an insulating material of a gram material; the power transmission element 127 passing through the first transmission tube 125 is a metal wire coated with an insulating layer to transmit power from the fluid generator 12. Flow of Transmission System Next, the generator system of the wireless power generator of the present embodiment will be described in detail. As shown in Fig. 2, the magnetic field generating unit, the first transmission (four) and the power transmission unit of the wireless power transmission system generator of the present embodiment are not intended. In the present embodiment, the fluid power generation generating unit 70124 of the line power transmission is disposed around the first transmission tube m, and the f 11 200941889 force transmission element 127 passes through the first transmission tube 125, and the flow unit is activated. In the inner space 1253 of the first transfer tube 125. As shown in Fig. 2, the flow direction of the flow unit in the first transfer tube 125 is two directions; and the direction of the magnetic field generated from the magnetic field generating unit 124 (from the N pole to the fifth pole) is the γ direction. Therefore, in the fifth embodiment, the direction of the magnetic field generated by the magnetic field generating unit 124 (the γ direction is not parallel to the flow direction of the flow unit in the first transfer tube 125), but the flow direction of the flow unit (ζ The directions are perpendicular to each other. According to Fleming's right-hand rule, the right thumb, forefinger and middle finger are straight and ❹# mutually perpendicular. The plum refers to the direction of conductor movement, the index finger represents the magnetic field, and the middle finger represents the direction of the induced current. Therefore, in the fluid generator of the wireless power transmission system of the present embodiment, since the flow direction of the flow unit in the first transfer tube 25 (ζ direction) and the magnetic field direction (γ direction) of the magnetic field generating unit 124 are perpendicular to each other, The induced current is drawn in the X direction. Therefore, in the fluid power generator of the wireless power transmission system of the present embodiment, the length 15 direction of the power transmission element 127 is disposed along the Χ direction, so that the length direction (X direction) of the power transmission element 127 and the magnetic field generating unit 124 are generated. The direction of the magnetic field (γ direction) and the flow direction (2 directions) of the 流动 flow unit in the space 1253 in the first transfer tube 125 are perpendicular to each other. In addition, as shown in Fig. 1, the wireless power transmission system, the receiver plus U can receive the stray microwave energy in the environment, and re-convert the stray microwave energy in the environment into electric power for application. Therefore, the wireless transmission system of the embodiment can further achieve the energy saving effect. In summary, the wireless power transmission system of the present invention utilizes the characteristics of the microwave to have good energy transfer, and the power is transmitted through the microwave signal to transmit and convert the microwave signal into electrical energy. In an electronic device. In addition, the "wireless power transmission system of the present invention" can simultaneously receive the stray microwave energy in the environment and convert it into electric power, thereby further achieving the energy saving effect. The above-mentioned embodiments are merely exemplified for the convenience of the description, and the scope of the claims is intended to be limited to the above embodiments. [FIG. 1] FIG. 1 is a schematic diagram of a wireless power transmission system according to a preferred embodiment of the present invention. Figure t is a schematic diagram showing the configuration of a magnetic field generating unit, a first transfer tube, and a power transmitting element of a wireless power transmission system in accordance with a preferred embodiment of the present invention. 11 receiver 121 resonant cavity 123 flow unit 125 first transfer tube 1252 straight tube 126 second transfer tube [main component symbol description] 1 〇 power output device 12 fluid generator 122 storage slot 124 magnetic field generating unit 1251 mouth 1253 inner space 127 power transmission element 13

Claims (1)

  1. 200941889 • X. Patent application scope: 1. A wireless power transmission system, comprising: a power output device, which converts power into a microwave signal and outputs the microwave signal; 5 a receiver receives the microwave signal丨And a fluid generator connected to the receiver, and the fluid generates electricity, comprising: a resonant cavity, a storage tank, a flow unit, a magnetic field generating unit, a first transmission tube, and a second transmission tube. And the power transmission unit, the storage tank, the first transmission tube, and the second transmission line B form a confined space, and the flow unit flows in the confined space; wherein a first transmission tube is connected to the resonant cavity and the storage tank, and the flow unit flows from the resonant cavity to the storage tank through the first transfer tube; the magnetic field generating unit is disposed around the first transfer tube; The first transfer tube connects the storage tank and the resonant cavity, and the flow unit passes through the second transfer tube and flows from the storage tank to the resonant cavity; the power transmission element passes through the © H 2 · a power transfer tube and the resulting application of the fluid generator such as a wireless power transmission system of item 1 (iv) patents, wherein the system pressure is below the sealed space 10 -2 p a. 2. The wireless power transmission system according to claim 1, wherein the magnetic field direction generated by the residual magnetic medium generating unit is not parallel to the flow direction of the flowing soap 70 in the first transmission tube. ^ The wireless power transmission system as described in the patent application scope is a wire coated with an insulating layer. The wireless power transmission system of claim 4, wherein the first transmission tube comprises a nozzle and a straight tube, and the nozzle is connected to the resonant cavity, and the straight tube is The storage tanks are connected. 6. The wireless power transmission system according to claim 5, wherein the aperture of the nozzle and the resonant cavity is larger than the aperture of the nozzle and the straight pipe connection portion. 7. The wireless power transmission system of the item, wherein the receiver is a horn antenna. ❹ 8. The wireless power transmission system according to claim 1, wherein the frequency of the microwave signal is 2.45 GHz. 9. The wireless power transmission system of claim 1, wherein the flow unit is an aqueous electrolyte solution. 10. The wireless power transmission system of claim 2, wherein the flow unit is a vaporized sodium aqueous solution or an aqueous magnesium oxide solution. 15 A. The wireless power transmission system of claim 1, wherein the magnetic field generating unit is a neodymium iron boron magnet. The wireless power transmission system of claim 1, wherein the material of the first transmission tube is an insulating material. 13. The wireless power transmission system of claim 1, wherein the material of the first transmission tube is acrylic. 15
TW097110388A 2008-03-24 2008-03-24 A wireless power transmission system TWI366320B (en)

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TW097110388A TWI366320B (en) 2008-03-24 2008-03-24 A wireless power transmission system

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Application Number Priority Date Filing Date Title
TW097110388A TWI366320B (en) 2008-03-24 2008-03-24 A wireless power transmission system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8853995B2 (en) 2009-06-12 2014-10-07 Qualcomm Incorporated Devices for conveying wireless power and methods of operation thereof
US9502909B2 (en) 2009-11-17 2016-11-22 Qualcomm Incorporated Power management for electronic devices

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8878393B2 (en) 2008-05-13 2014-11-04 Qualcomm Incorporated Wireless power transfer for vehicles
US9178387B2 (en) 2008-05-13 2015-11-03 Qualcomm Incorporated Receive antenna for wireless power transfer
US20100201312A1 (en) 2009-02-10 2010-08-12 Qualcomm Incorporated Wireless power transfer for portable enclosures
US8338991B2 (en) 2009-03-20 2012-12-25 Qualcomm Incorporated Adaptive impedance tuning in wireless power transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8853995B2 (en) 2009-06-12 2014-10-07 Qualcomm Incorporated Devices for conveying wireless power and methods of operation thereof
US9502909B2 (en) 2009-11-17 2016-11-22 Qualcomm Incorporated Power management for electronic devices
US9680313B2 (en) 2009-11-17 2017-06-13 Qualcomm Incorporated Authorized based receipt of wireless power

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