CN103532253B - Laser radio energy output system - Google Patents
Laser radio energy output system Download PDFInfo
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- CN103532253B CN103532253B CN201310524728.XA CN201310524728A CN103532253B CN 103532253 B CN103532253 B CN 103532253B CN 201310524728 A CN201310524728 A CN 201310524728A CN 103532253 B CN103532253 B CN 103532253B
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- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 claims description 3
- VTGARNNDLOTBET-UHFFFAOYSA-N gallium antimonide Chemical compound [Sb]#[Ga] VTGARNNDLOTBET-UHFFFAOYSA-N 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 241000931526 Acer campestre Species 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- YMHOBZXQZVXHBM-UHFFFAOYSA-N 2,5-dimethoxy-4-bromophenethylamine Chemical compound COC1=CC(CCN)=C(OC)C=C1Br YMHOBZXQZVXHBM-UHFFFAOYSA-N 0.000 description 1
- 241000545067 Venus Species 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Photovoltaic Devices (AREA)
Abstract
A kind of laser radio energy output system, comprising: a laser; One light uniforming device, it is positioned on the output light path of laser; Collimator, it is positioned on the output light path of light uniforming device; One laser energy receiver, it is positioned on the output light path of collimater; One watch-dog, its input is connected with the output of laser energy receiver.The present invention can realize the long range radio transmissions of energy, has structure simple, the advantage that cost is low simultaneously.
Description
Technical field
The present invention relates to energy field, particularly relate to a kind of laser radio energy output system.
Background technology
Power transmission has various ways, and modal is wired transporting, and namely adopts metal wire that electric energy is transported to second ground from first; Also storage battery can be adopted to carry, charge to discharge in second in first; Can also be undertaken by the mode of wireless power transfer.Wireless power transfer has two kinds of forms, one microwave power transmission, and it two is laser delivery of energies, and two kinds of forms are all be wave energy by electric energy conversion, and ripple aloft transmits, and receives, then be the process of electric energy by wave energy conversion after arriving destination.Comparatively speaking, the Energy Transfer density of laser system is large, is 100 times of microwave system; Secondly good directionality, intensity is not limited, but can not work under the weather that atmosphere intrinsic fog great Yun is many.Contrary with it, microwave energy transfer system can under the bad weather of endoatmosphere supply energy source, but microwave diversity is strong, thus makes system acceptance antenna size excessive, and disturbs its intensity limited by atmospheric ionized layer.As can be seen here, as long as avoid rainy weather, or above the clouds, laser delivery of energy is exactly optimal selection.
Laser delivery of energy is often used for special occasions, as cannot stringing, cannot to transport and between the two places needing again long-term power supply.Therefore, its market is less, but very important.
List of references:
[1] Hong Yanji, Venus, young pathbreaker Lee, Dou Zhiguo, Li Qian etc., " near space vehicle technology " equips the academic monograph of institute, National Defense Industry Press, January in 2012 the 1st edition.
[2] Xiong Shaozhen, Zhu Meifang, " solar cell basis and application ", chapter 5: silicon-based thin film solar cell, Science Press, the first edition, in October, 2009.
First be the homogeneity question of light intensity in hot spot.Usually best laser is all single mode, and light intensity presents Gaussian Profile, i.e. light intensity radius and weakening.Due to the difference of light intensity, the receiving efficiency of receiver can be greatly affected, if battery be series connection, then with the most weak a slice of light intensity for benchmark, the electric current of whole receiver is minimum value.And if battery is in parallel, although electric current can superpose, the voltage of whole receiver is only 0.5V, electric current is very large, boosting difficulty.
Next is the collimation problem of laser beam.Along with the distance of the transmission of laser increases, conventional laser has the angle of divergence of 5 milliradians, after transmitting a segment distance hot spot can become very large, and light intensity decreasing.Such as, after laser transmission 1000 meters, laser facula can become the great circle spot that radius is 5 meters.Therefore, laser beam divergence should control within 0.5 milli arc.
3rd is the opto-electronic conversion problem under high power light intensity.Current photovoltaic cell is with 1 sun light intensity (0.1W/cm
2) shallow junction (<0.5 μm) that designs for standard and wide grid (>1mm) structure.But when laser intensity rises to 100 times of (10W/cm
2) or the sun light intensity of 1000 times time (100W/cm
2), photo-generated carrier becomes the increase of hundred times and thousand times, is gathered in battery top layer, and its compound also increases considerably, and therefore, its efficiency can decline.Usual solar cell efficiency under 3 times of optically focused starts to decline.Therefore, want to overcome this difficulty, must battery structure be redesigned.
Summary of the invention
The object of the invention is to, provide a kind of laser radio energy output system, it can realize the long range radio transmissions of energy, has structure simple, the advantage that cost is low simultaneously.
The invention provides a kind of laser radio energy output system, comprising:
One laser;
One light uniforming device, it is positioned on the output light path of laser;
Collimator, it is positioned on the output light path of light uniforming device;
One laser energy receiver, it is positioned on the output light path of collimater;
One watch-dog, its input is connected with the output of laser energy receiver.
As can be seen from technique scheme, the present invention has following beneficial effect.
1, utilize the present invention, multi-mode laser can be used to carry out laser delivery of energy, multi-mode laser also can be used to carry out laser delivery of energy, greatly reduce the cost of delivery of energy.
2, utilize the present invention, the even intensity of laser facula can be made, thus improve the efficiency of laser delivery of energy.
3, utilize the present invention, laser can be transported to farther distance, and laser facula change is little.
4, utilize the present invention, battery can be made to withstand the irradiation of high energy laser, and the photoelectric conversion efficiency of laser energy receiver is not reduced.
Accompanying drawing explanation
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of light uniforming device in Fig. 1;
Fig. 3 is the structural representation of collimater in Fig. 1.
Embodiment
Refer to shown in Fig. 1-Fig. 3, the invention provides a kind of laser radio energy output system, comprising:
One laser 11, the wavelength of described laser 11 at visible and infrared band, namely from 0.5 micron to 12 microns;
One light uniforming device 12, it is positioned on the output light path of laser 11;
Collimator 13, it is positioned on the output light path of light uniforming device 12, described collimater 13 is the combination of Single wavelength poly-lens, and it controls beam divergence angle, the spot size of control laser destination a long way off, described collimater 13 comprises, one first lens 131, one second lens 132, these first lens 131 and the second lens 132 are positioned in same light path, these second lens 132 are positioned on a stepping motor slide rail 133, to regulate the distance with the first lens 131;
One laser energy receiver 14, it is positioned on the output light path of collimater 13, described laser energy receiver 14 is the integrated of semiconductor photovoltaic cells and heat radiation thereof and encapsulation, the material of this laser energy receiver 14 is silicon, indium gallium arsenic, gallium antimonide, tinization lead or telluride germanium, its band gap is between 1.1 to 0.1eV, corresponding wavelength is between 1.1-10 micron, described laser energy receiver 14 is for bearing the pn junction photovoltaic battery of predetermined power density, the gate electrode of photovoltaic cell is dense distribution, reach gate spacer at below 1mm, capture photo-generated carrier with more; The junction depth of photovoltaic cell is greater than 0.5 micron, to reduce the series resistance of battery, described laser energy receiver 14 is back of the body junction battery, its pn ties at the back side of battery, and side to light is unobstructed, light-receiving area is maximized, described laser energy receiver 14 is vertical junction battery, its pn ties perpendicular to side to light, and side to light is unobstructed, light-receiving area is maximized, and described laser energy receiver 14 is the string of multiple photovoltaic cell and connects, to tackle the inhomogeneities of receiver boosting and laser energy density;
One watch-dog 15, its input is connected with the output of laser energy receiver 14.
Adopt laser, light uniforming device, collimater, laser energy receiver and watch-dog composition laser radio energy output system.Utilize the present invention, energy can be transferred to second ground from first wirelessly, thus form wireless power transfer.
Adopt near infrared band, namely from 0.5 micron to 12 microns, at this wave band, laser energy is less in space loss; The laser longer than 12 micron wave lengths does not then have.
Adopt light uniforming device, change laser intensity with the change profile of radius, uniform intensity when making arrival laser energy receiver, thus improve the receiving efficiency of receiver.
Adopt Single wavelength lens combination, control beam divergence angle, control the spot size of laser destination a long way off.
Adopt the photovoltaic cell corresponding with optical maser wavelength, the band gap width of battery is slightly less than photon energy corresponding to wavelength, and receiving efficiency is maximized.
Adopt the material that silicon, indium gallium arsenic, gallium antimonide, tinization are plumbous, telluride germanium is described laser energy receiver, its band gap is between 1.1 to 0.1eV, and corresponding wavelength is between 1.1-10 micron.
Employing can bear the pn junction photovoltaic battery of certain power density, and the gate electrode of photovoltaic cell is dense distribution, reaches gate spacer at below 1mm, captures photo-generated carrier with more; The junction depth of photovoltaic cell is greater than 0.5 micron, to reduce the series resistance of battery.
Adopt back of the body junction battery to be laser energy receiver, its pn ties at the back side of battery, and side to light is unobstructed, and light-receiving area is maximized.
Adopt vertical junction battery to be laser energy receiver, its pn ties perpendicular to side to light, and side to light is unobstructed, and light-receiving area is maximized.
Adopt the series and parallel connections of multiple photovoltaic cell, to form laser energy receiver.The series connection of photovoltaic cell is to increase output voltage, and parallel connection then can be resisted uneven the caused receiving efficiency of laser energy density and reduce, and both are for organically combining.
Four, principle explanation
1, the uniformity of light intensity in hot spot
Utilize the optical diffraction characteristic of Laser output; utilize tapered wall to the total reflection characteristic of light, through ray-tracing simulations, can show that the best forming even light ties tapered structure more; the laser intensity of single mode or multimode is evenly distributed after light uniforming device, and non-gaussian distribution.
2, the collimation of laser beam
Choose two lens, carry out collimation combination.For optical maser wavelength, to its evaporation optical anti-reflective film, make the transmitance of single lens be greater than 95%, the transmitance of lens combination is greater than 90%.By the fine setting to two geometric lens relative positions, its collimation is greatly improved, can lower than less than 0.5.
3, the opto-electronic conversion under high power light intensity
Parallel junction battery: strengthen junction depth, encryption grid line;
Back of the body junction battery: the area strengthening side to light;
Vertical junction battery: reduce series resistance, increase output voltage.
Above embodiment be only illustrate technological thought of the present invention, protection scope of the present invention can not be limited with this, every according to the present invention propose technological thought, in technical scheme do any change that basis is done, all fall within scope.
Claims (1)
1. a laser radio energy output system, comprising:
One laser, the wavelength of this laser is at visible and infrared band, and this wavelength is from 0.5 micron to 12 microns;
One light uniforming device, it is positioned on the output light path of laser;
Collimator, it is positioned on the output light path of light uniforming device, described collimater is the combination of Single wavelength poly-lens, and it controls beam divergence angle, the spot size of control laser destination a long way off, described collimater comprises, one first lens, one second lens, these first lens and the second lens are positioned in same light path, these second lens are positioned on a stepping motor slide rail, to regulate the distance with the first lens;
One laser energy receiver, it is positioned on the output light path of collimater, this laser energy receiver is the integrated of semiconductor photovoltaic cells and heat radiation thereof and encapsulation, the material of this laser energy receiver is silicon, indium gallium arsenic, gallium antimonide, tinization lead or telluride germanium, its band gap is between 0.1eV to 1.1eV, and corresponding wavelength is between 1.1-10 micron; Described photovoltaic cell is the pn junction photovoltaic battery bearing predetermined power density, and the gate electrode of photovoltaic cell is dense distribution, reaches gate spacer at below 1mm, captures photo-generated carrier with more; The junction depth of photovoltaic cell is greater than 0.5 micron, and to reduce the series resistance of battery, described laser energy receiver is the connected in series or in parallel of multiple photovoltaic cell, to tackle the inhomogeneities of laser energy receiver boosting or laser energy density respectively;
One watch-dog, its input is connected with the output of laser energy receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524728.XA CN103532253B (en) | 2013-10-30 | 2013-10-30 | Laser radio energy output system |
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|---|---|---|---|
| CN201310524728.XA CN103532253B (en) | 2013-10-30 | 2013-10-30 | Laser radio energy output system |
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| CN103532253A CN103532253A (en) | 2014-01-22 |
| CN103532253B true CN103532253B (en) | 2016-03-30 |
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| CN201310524728.XA Expired - Fee Related CN103532253B (en) | 2013-10-30 | 2013-10-30 | Laser radio energy output system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104767471B (en) * | 2014-12-19 | 2017-01-25 | 中国航天科技集团公司第五研究院第五一三研究所 | Laser wireless energy transmission efficient composite energy receiving device |
| CN105119327B (en) * | 2015-07-17 | 2017-12-22 | 潘跃兵 | A kind of low-power wireless charging device |
| US10264650B2 (en) * | 2015-08-31 | 2019-04-16 | The Boeing Company | System and method for contactless energy transfer to a moving platform |
| CN105553125B (en) * | 2015-09-11 | 2018-07-24 | 宇龙计算机通信科技(深圳)有限公司 | Wireless charging device, user terminal and wireless charging method |
| CN106340978A (en) * | 2015-12-11 | 2017-01-18 | 中国特种飞行器研究所 | Long-distance wireless power transmission system |
| TW201731069A (en) * | 2016-02-22 | 2017-09-01 | 晶元光電股份有限公司 | Photo-electrical conversion system |
| CN107305912A (en) * | 2016-04-15 | 2017-10-31 | 北京空间技术研制试验中心 | Spacecraft laser battery |
| CN105772446B (en) * | 2016-05-09 | 2019-03-01 | 武汉锐科光纤激光技术股份有限公司 | A kind of cleaning device and its method suitable for standard component raw material |
| CN106785856A (en) * | 2016-11-25 | 2017-05-31 | 中国人民解放军装备学院 | Laser delivery of energy opto-electronic conversion synergisting method based on photovoltaic cell arrays circuit optimization |
| CN106741973A (en) * | 2016-11-29 | 2017-05-31 | 陈蓓 | The aircraft power supply of superlaser is transmitted based on optical fiber |
| CN106849381B (en) * | 2016-12-27 | 2019-05-14 | 武汉光谷航天三江激光产业技术研究院有限公司 | A kind of wireless energy transfer emitter, Transmission system and transmission method |
| CN107947393B (en) * | 2017-11-13 | 2023-10-13 | 南京理工大学 | Self-adaptive wave front shaping laser charging system and charging method thereof |
| CN108494115B (en) * | 2018-02-13 | 2020-08-28 | 中国电子科技集团公司第十一研究所 | Laser wireless energy transfer device and method |
| CN109038866A (en) * | 2018-07-03 | 2018-12-18 | 山东航天电子技术研究所 | A kind of laser radio biography energy emitting-receiving system |
| CN110109223B (en) * | 2019-05-14 | 2024-04-26 | 深圳技术大学 | Laser wireless energy transmission system based on light guide plate |
| CN110109224A (en) * | 2019-05-14 | 2019-08-09 | 深圳技术大学 | A kind of laser array wireless energy transfer system based on light guide plate |
| CN113036949A (en) * | 2021-03-02 | 2021-06-25 | 全球能源互联网研究院有限公司 | Laser energy supply device based on photocell |
| CN113300491B (en) * | 2021-04-30 | 2024-04-16 | 西安电子科技大学 | Laser wireless energy transmission system capable of realizing multi-point access |
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| CN2203785Y (en) * | 1994-12-16 | 1995-07-19 | 中国科学院半导体研究所 | Homogeneous emission lasing source |
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| CN103124108A (en) * | 2013-01-31 | 2013-05-29 | 天津大学 | Method and device for transmitting energy wirelessly by coherent light |
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| CN1624520A (en) * | 2004-12-15 | 2005-06-08 | 中国科学院上海光学精密机械研究所 | Conical device for improving light beam energy distribution |
| CA2846843C (en) * | 2011-08-26 | 2019-05-14 | Kevin L. Lear | High speed free-space optical communications |
| CN102664469A (en) * | 2012-04-28 | 2012-09-12 | 清华大学 | Feedback type laser energy wireless transmission device |
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- 2013-10-30 CN CN201310524728.XA patent/CN103532253B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2203785Y (en) * | 1994-12-16 | 1995-07-19 | 中国科学院半导体研究所 | Homogeneous emission lasing source |
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| CN103124108A (en) * | 2013-01-31 | 2013-05-29 | 天津大学 | Method and device for transmitting energy wirelessly by coherent light |
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