CN111049251A - Modulated laser energy supply system - Google Patents
Modulated laser energy supply system Download PDFInfo
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- CN111049251A CN111049251A CN202010000179.6A CN202010000179A CN111049251A CN 111049251 A CN111049251 A CN 111049251A CN 202010000179 A CN202010000179 A CN 202010000179A CN 111049251 A CN111049251 A CN 111049251A
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a light energy supply device for synchronously transmitting discontinuous modulation light source energy signals, which comprises a main control device, a signal generating device, a laser system, a laser beam shaping system, a beam pointing system, a laser-photovoltaic cell, a pulse conversion device, an electrical load and a communication device. The main control device loads the waveforms required by the electric load sent by the communication device to the laser system through the signal generating device, and transmits energy beams with carrier information to the receiving end synchronously through the laser beam shaping system and the beam pointing system. The energy beam with carrier information is a power beam modulated by pulse width, position, amplitude or sinusoidal carrier, and the like, outputs electric energy with carrier information through a laser-photovoltaic cell, and then outputs carrier electric energy with controllable amplitude, phase and frequency through a pulse conversion device. The system can be applied to laser wireless energy supply of electric unmanned aerial vehicle electric drive equipment.
Description
Technical Field
The application relates to the technical field of laser wireless energy transmission in the technical field of photoelectricity, in particular to a light energy supply device adopting a discontinuous modulation light source.
Background
The electrically driven unmanned aerial vehicle has the advantages of small volume, light weight, low noise, low cost and the like, and is widely applied to the fields of aerial photography, investigation and the like. However, because current electric unmanned aerial vehicle energy storage mainly relies on the lithium cell energy supply, its energy density is limited, needs frequent take off and land to change the battery. The restriction of electric unmanned aerial vehicle energy memory often becomes the key problem of its unable full play efficiency. Therefore, research and development are provided for realizing energy supply of the electrically driven unmanned aerial vehicle by adopting a laser wireless energy supply mode. The laser wireless energy transmission technology has incomparable advantages compared with other wireless energy supply technologies in the aspects of size, transmission distance, power density and the like of a transmitting and receiving device. Therefore, the wireless energy supply system has a great application prospect in the wireless energy supply of the medium-distance and long-distance electrically-driven unmanned aerial vehicle. The laser wireless energy transmission technology is a technology that a laser system is used as an electro-optical conversion device, a laser beam is used as an energy transmission carrier, laser energy is received through a laser-photovoltaic cell and is converted into electric energy, and finally the electric energy is utilized through a power management system, so that energy wireless transmission is realized. A complete laser wireless energy transmission system mainly comprises a laser system for converting energy from energy to laser beam energy, a laser beam shaping and emitting system, a beam pointing system for realizing target capture, tracking and pointing (ATP), a laser-photovoltaic cell serving as a photoelectric conversion device, a power management system and a communication system of a transceiver device. Besides the energy supply of lasers (artificial light sources such as semiconductor laser systems, solid laser systems, gas laser systems and the like), other controllable artificial light sources can also be used for energy supply, such as LED energy supply.
In order to realize the efficient transmission of the laser wireless energy supply system of the electric drive device, the energy transmission laser beam needs to be aligned with the laser-photovoltaic cell. However, for a driving device in motion, such as an electric unmanned aerial vehicle, the motion trajectory of the driving device is difficult to predict, so that it is difficult to achieve real-time high-precision alignment of a light beam and a laser-photovoltaic cell for a long time; in addition, in order to improve the operation efficiency of the system, the energy supply system needs to meet the requirement of short-time charging and long-time endurance. At present to lithium cell and lead acid battery, generally adopt the mode of pulse charging to improve the charging speed, in addition, become the charging mode of pulse and can also play the guard action to the battery to a certain extent, prolong its life. The specific mode is that the amplitude or the width of the pulse is adjusted according to the required current or voltage to finish the quick charging by adopting the form of pulse current or pulse voltage. A traditional constant laser wireless energy transmission quick charging system adopts a two-stage conversion mode to realize pulse output. The laser system outputs a laser beam with constant light intensity, and after the laser-photovoltaic battery receives the laser beam with constant light intensity, the laser-photovoltaic battery firstly converts the laser beam into electric energy with a constant voltage value through the direct current conversion device, and then the electric energy is generated into pulse electric energy through the secondary conversion circuit, and the constant direct current electric energy is converted into pulse electric energy waveforms required by charging of the lithium battery or the lead-acid battery. In this way, the following disadvantages exist: firstly, the energy conversion devices are composed of a plurality of power devices, so that each stage of energy conversion device is added, certain energy loss is brought; secondly, most energy is dissipated in the traditional pulse electric energy generation mode in the pulse interval period, so that the energy cannot be effectively utilized, and the system efficiency is further greatly influenced; moreover, the structures of the direct current converter and the secondary energy conversion device are complex, the self weight of the electric drive device is increased, the load is extruded, and the endurance time of the electric drive device is reduced.
In addition, for the brush dc motor, the rotation speed is related to the average voltage of the input electric energy, and the higher the average voltage is, the faster the rotation speed is, the speed regulation mode is usually realized by using a Pulse Width Modulation (PWM) input voltage method, that is, the input voltage of the motor is a square wave voltage with a certain duty ratio, and the square waves with different duty ratios have different average voltages to realize different rotation speed control. For motor driving devices such as electric unmanned aerial vehicles and electric unmanned vehicles, the main power consumption load of the motor driving devices is a motor driven and regulated in a pulse modulation mode. In a constant laser wireless motor power supply system, a laser runs in a constant output power mode, after a laser-photovoltaic cell receives laser light beams with constant light intensity, the laser light beams are converted into electric energy with a constant voltage value through a direct current conversion device, and the electric energy with pulse width or pulse amplitude modulation characteristics is converted into the electric energy through a secondary electric energy conversion module, so that the control of the rotating speed of a motor is completed. Similar to a pulse storage battery charging system, the two-stage energy conversion structure reduces the system efficiency, increases the system complexity and weight, extrudes the system load capacity and reduces the endurance time of the system.
Disclosure of Invention
In order to solve the problem that two-stage transformation is needed to reduce the system efficiency and increase the weight and complexity of the system structure in the prior art, the application provides the following solution, the wireless energy signal synchronous transmission of laser is realized by increasing modulation for energy-transmitting laser, on one hand, the pulse or other waveform quick charging required by a receiving end energy storage battery is realized by modulating laser of a transmitting end, on the other hand, the wireless synchronous energy supply and real-time control of a remote electric drive unmanned aerial vehicle motor are realized at the transmitting end by a laser wireless energy signal synchronous transmission technology, so that the structure of the system is optimized, and the endurance and the reliability of motor drive devices such as a motor-driven unmanned aerial vehicle and an unmanned vehicle are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: an apparatus for light energizing using a modulated light source, the apparatus comprising: the device comprises a main control device, a signal generating device, a laser system, a laser beam shaping and emitting system, a beam pointing system, a laser-photovoltaic cell, a pulse conversion device, an electric load and a communication device. The main control device is connected with the signal generating device and the communication device and is used for controlling the signal generating device to generate a modulation signal according to a pulse form required by the power load transmitted by the communication device; the signal generating device is connected with the laser system, the modulation signal is a signal for modulating the intensity and/or the pulse width of laser, and the modulation signal acts on the laser system to generate modulated laser output according to the modulation signal; the laser system outputs modulated laser beams, and the laser beam shaping system is used for shaping and collimating the laser beams output by the laser system to emit the laser beams at high efficiency, so that transmission loss is reduced; the beam pointing system is used for capturing, tracking and pointing the laser-photovoltaic cell, and further guiding the shaped and collimated laser beam to project on the laser-photovoltaic cell. The laser-photovoltaic cell, the pulse conversion device, the electric load and the communication device are energy receiving devices of an electrically driven aircraft system. The laser-photovoltaic cell receives the irradiation of the laser beam to realize the conversion from the laser light energy to the electric energy; the pulse conversion device directly converts the pulses output by the photovoltaic cell into a pulse form required by an electric load; the power load comprises an energy storage device such as a lithium battery and a storage battery or a direct current brush, brushless or alternating current motor. And the communication device sends the power demand or the required pulse waveform of the power load to a main control device.
Aiming at different types of electric loads, the embodiment of the invention provides the following technical scheme:
a lithium battery and storage battery rapid charging scheme based on pulse modulation laser is characterized in that electric energy information of an energy storage battery is fed back through a communication device between an energy transmitting end and a receiving end, corresponding pulse light energy is output through a laser according to a pulse waveform required by rapid charging of a lithium battery or a lead-acid storage battery, and the receiving end only uses a single-stage electric energy conversion device to realize rapid charging of the storage battery.
On the other hand, based on a pulse modulation laser brush direct current motor driving speed regulation scheme, energy transmission laser is modulated at a transmitting end of a laser wireless energy transmission system, the power of laser output by a laser is modulated according to an electric energy waveform required by motor driving speed regulation through a communication device between a transmitting system and a receiving system, the modulated laser output is incident to a laser-photovoltaic cell at a remote end through a transmission path, the laser-photovoltaic cell directly outputs the modulated driving electric energy, and the driving electric energy directly drives a motor to rotate.
And compounding the control signal into the wireless laser energy transmission device, and transmitting the control signal by taking the laser beam as a control signal carrier. At the ground end, the signal generating device generates a modulation signal with a control instruction according to the control instruction sent by the main control device to modulate the laser beam output by the laser system. In the aircraft part, besides the electricity load, the electric vehicle further comprises a decoupling device and a switching converter device which are positioned at the moving end; the decoupling device comprises a laser-photovoltaic cell, a signal separation device and a signal extraction device, wherein the laser-photovoltaic cell, the signal separation device and the signal extraction device are positioned at the moving end. The laser-photovoltaic cell realizes photoelectric conversion; the separation device is used for separating the electric signal into a control part and an energy part, the control part is input into the signal extraction device, and the energy part is input into the switch converter device; the signal extraction device is used for extracting the modulation information of the control part; the switching converter device is used for realizing the maximum power output control of the laser-photovoltaic cell.
On the other hand, based on the pulse modulation laser brushless direct current motor driving speed regulation scheme, the modulation signal sent by the signal generating device is a modulation signal comprising a control signal. Firstly, inputting a modulation signal including a control signal into a laser system, so that the emergent laser simultaneously comprises the modulation signal and energy, the modulated laser is output as an energy beam with frequency, phase and amplitude information, the frequency, phase and amplitude information of the modulated laser output are in a recognizable fluctuation range of a laser-photovoltaic cell, the emergent laser comprising the modulation signal is converted into corresponding modulation electric energy through the laser-photovoltaic cell 6, the separation of the signal and the energy is realized through a signal separation device, and the extraction of the modulation signal is carried out on a signal part through a signal extraction device for realizing the transmission of the control signal for controlling an aircraft or other signals; the power part is input into a switch converter device, and the switch converter device can always set the laser-photovoltaic cell to be in a maximum power point working state or a specific voltage and current working state according to the incident laser power and output driving electric energy.
The scheme has the advantages that based on the pulse laser wireless rapid charging structure, the single-stage converter is adopted at the receiving end, so that the energy loss of a secondary energy conversion device in the traditional rapid charging mode is reduced, and the system efficiency can be effectively improved. In addition, in the low level interval of the pulse energy laser, no energy is transmitted, so that no energy loss exists, and the efficiency of the system can be greatly improved. In addition, the single-stage energy conversion system based on the pulse modulation laser reduces the complexity of the receiving system, improves the reliability of the receiving system and can effectively reduce the weight of the receiving system.
The specific technical scheme of the application is as follows:
a light energy supply device adopting a discontinuous modulation light source comprises a main control device, a signal generating device, a laser system, a laser beam shaping system, a beam pointing system, a laser-photovoltaic cell, a pulse conversion device and an electric load, wherein the main control device is connected with the signal generating device and is used for controlling the signal generating device to generate a modulation signal according to a pulse form required by the electric load; the signal generating device is connected with the laser system, the modulation signal is a signal for modulating the intensity and/or the pulse width of laser, and the modulation signal acts on the laser system to generate modulated laser output according to the modulation signal; the laser beam shaping system is used for realizing beam-shrinking collimation of the laser beam output by the laser system so as to emit the laser beam with high efficiency; the beam pointing system guides the laser beam after beam contraction and collimation to project on the laser-photovoltaic cell; the laser-photovoltaic cell receives the irradiation of the laser beam to realize the conversion from the laser energy to the electric energy.
Preferably, the electricity load is a lithium battery; the modulation signal sent by the signal generating device is a modulation signal for modulating the output light beam of the laser system according to the electric energy required by the pulse charging of the lithium battery, the laser system sends out a modulated laser beam according to the modulation signal with the characteristics required by the pulse charging, the laser-photovoltaic battery of the aircraft part receives the modulated laser beam, and the lithium battery can be directly and rapidly charged by outputting variable current or variable voltage.
Preferably, the electrical load is an electric motor.
Preferably, the electric energy output by the laser-photovoltaic cell is used for driving a motor.
Preferably, the motor is a brushed direct current motor, the signal generating device sends out a modulation signal to control the laser system with the modulation function to directly output the modulation signal with the designated duty ratio, the modulated laser output is incident to the laser-photovoltaic cell of the aircraft part through a transmission path, the laser-photovoltaic cell directly outputs the modulated driving electric energy, the driving electric energy directly drives the brushed direct current electrode to rotate, and the speed regulation of the motor is realized by controlling the duty ratio of laser pulses.
Preferably, the motor acquires real-time information in an open-loop control mode or a wireless monitoring mode and then transmits the real-time information back to the main control device, and the main control device controls the signal generating device to generate a speed regulating signal.
Preferably, the modulation signal sent by the signal generating device is a modulation signal comprising a control signal, and the control signal is a control signal for controlling the flight state of the aircraft or a transmission audio-video signal.
Preferably, the electric energy output by the laser-photovoltaic cell comprises a speed regulation signal, and the electric energy is directly used for driving the motor.
Preferably, the laser further comprises decoupling means for separating the modulation signal in the modulated laser output.
Preferably, the modulated signal in the modulated laser output is split and input to a motor to regulate the speed of the motor.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic diagram of the decoupling assembly and switching converter assembly required to drive the motor;
Detailed Description
A light energy supply device adopting a discontinuous modulation light source comprises a main control device 1, a signal generating device 2, a laser system 3, a laser beam shaping system 4, a beam pointing system 5, a laser-photovoltaic cell 6, a pulse conversion device 7, an electric load 8 and a communication device 9. The main control device 1, the signal generating device 2, the laser system 3, the laser beam shaping system 4 and the beam directing system 5 are components of a transmitting system, the main control device 1 is connected with the signal generating device 2 and the communication device 9, and is used for controlling the signal generating device 2 to generate a modulation signal according to a pulse form required by the power load 8 transmitted by the communication device 9; the signal generating device 2 is connected to the laser system 3, the modulation signal is a signal for modulating the intensity and/or the pulse width of laser light, and the modulation signal acts on the laser system 3 to generate modulated laser output according to the modulation signal; the laser system 3 outputs laser beams, and the laser beam shaping system 4 is used for realizing beam-shrinking collimation of the laser beams output by the laser system 3 so as to emit the laser beams with high efficiency, so that transmission loss is reduced; the beam pointing system 5 is used for capturing, tracking and pointing the laser-photovoltaic cell 6, and further guiding the laser beam after beam-shrinking collimation to be projected onto the laser-photovoltaic cell 6. The laser-photovoltaic cell 6, the pulse conversion device 7, the electrical load 8 and the communication device 9 are components of an aircraft. The laser-photovoltaic cell 6 receives the irradiation of the laser beam to realize the conversion from the laser light energy to the electric energy; the pulse conversion device 7 converts the pulses output by the photovoltaic cell into the pulse form required by the electric load 8; the electric load 8 is a lithium battery or a motor; the communication device 9 connects the electric load8The power demand or the required pulse waveform is sent to the main control device1。
The first embodiment is as follows:
the electric load 8 is an energy storage battery, the signal generator 2 of the transmitting system emits a modulation signal which modulates the output light beam of the laser system 3 according to the pulse charging waveform required by the lithium battery sent to the main control device by the communication device 9, the laser system 3 emits a modulated laser beam according to the modulation signal with the characteristics required by pulse charging, and the laser-photovoltaic battery 6 of the aircraft part receives the modulated laser beam and outputs variable current or variable voltage to directly and rapidly charge the lithium battery. Compared with the prior art, the aircraft part omits a power supply conversion module, so that the rear end weight is reduced, the loading capacity and the cruising capacity are improved, the complexity of the device is reduced, and the reliability is improved.
Example two:
the electric load 8 is a motor, preferably a brushed direct current motor, the running speed of the brushed direct current motor is related to the voltage value of the input electric energy, the rotating speed is faster when the input voltage is larger, the speed regulation mode is usually realized by adopting a modulation method, for example, the input voltage is realized to be a square wave with a certain duty ratio by pulse width modulation, and the square waves with different duty ratios have different average voltages to realize different rotating speed control; the speed regulation can also be realized by inputting electric energy with sinusoidal fluctuation of voltage, and the sinusoidal fluctuation with different wave crests and wave troughs has different average voltage, namely different rotating speed control can be realized.
In the embodiment, output laser is modulated at a laser output end of a laser wireless energy transmission system, a signal generating device 2 sends out a modulation signal, a laser system 3 with a modulation function is controlled to directly output modulated laser pulses with a specified duty ratio or specified pulse amplitude, the modulated laser output is transmitted to a laser-photovoltaic battery 6 of an aircraft part through a transmission path, the laser-photovoltaic battery 6 directly outputs modulated driving electric energy to directly drive a brushed direct current motor to rotate, and the motor is regulated by controlling the duty ratio or the specified pulse amplitude of the laser pulses. The motor can be controlled in an open loop mode, and real-time information can be acquired in a wireless monitoring mode and then transmitted back to the main control device 1 through the communication device 9, so that the wireless energy supply and control of the motor by laser are directly realized.
Example three:
the motor is a brushless DC motor andthen in the powered deviceThe decoupling device comprises a decoupling device and a switch converter device, wherein the decoupling device comprises a laser-photovoltaic cell 6, a signal separation device and a signal extraction device which are positioned at a moving end. The laser-photovoltaic cell 6 realizes photoelectric conversion; the separation device is used for separating the electric signal into a control part and an energy part, the control part is input into the signal extraction device, and the energy part is input into the switch converter device; the signal extraction device is used for extracting the modulation information of the control part; the switching converter device is used for realizing the maximum power output control of the laser-photovoltaic cell.
The modulation signal emitted by the signal generating device 2 is a modulation signal comprising a control signal. Firstly, inputting a modulation signal including a control signal into a laser system, so that the emergent laser simultaneously comprises the modulation signal and energy, the modulated laser is output as an energy beam with frequency, phase and amplitude information, the frequency, phase and amplitude information of the modulated laser output are in a recognizable fluctuation range of a laser-photovoltaic cell 6, the emergent laser comprising the modulation signal is converted into corresponding modulation electric energy through the laser-photovoltaic cell 6, the separation of the signal and the energy is realized through a signal separation device, and the extraction of the modulation signal is carried out on a signal part through a signal extraction device for realizing the transmission of the control signal for controlling an aircraft or other signals; the power part is input into a switch converter device, and the switch converter device can always set the laser-photovoltaic cell to be in a maximum power point working state or a specific voltage and current working state according to the incident laser power and output driving electric energy.
When the control signal is a speed regulating signal, the speed regulating signal is input into the motor speed regulator and finally converted into a control signal of the motor, so that the motor is controlled to operate at different speeds, and the switch converter device converts the output driving electric energy into direct current voltage suitable for the brushless direct current motor and inputs the direct current voltage into a direct current input end of the brushless direct current motor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A light energy supply device adopting a discontinuous modulation light source comprises a main control device, a signal generating device, a laser system, a laser beam shaping system, a beam pointing system, a laser-photovoltaic battery, a pulse conversion device, an electric load and a communication device, wherein the main control device is connected with the signal generating device and the communication device and is used for controlling the signal generating device to generate a modulation signal according to a pulse form required by the electric load transmitted by the communication device; the signal generating device is connected with the laser system, the modulation signal is a signal for modulating the intensity and/or the pulse width of laser, and the modulation signal acts on the laser system to generate modulated laser output according to the modulation signal; the laser beam shaping system is used for realizing beam-shrinking collimation of the laser beam output by the laser system so as to emit the laser beam with high efficiency; the beam pointing system guides the laser beam after beam contraction and collimation to be projected onto the laser-photovoltaic cell; the laser-photovoltaic cell receives the irradiation of the laser beam to realize the conversion from the laser light energy to the electric energy; the pulse conversion device converts the pulse output by the laser-photovoltaic cell into a pulse form required by the electric load; the electric load 8 is a lithium battery or a motor; and the communication device sends the power demand or the required pulse waveform of the power load to the main control device.
2. The light energy supply device adopting the discontinuous modulation light source according to claim 1, wherein the electric load is a lithium battery; the modulation signal sent by the signal generating device is a modulation signal for modulating the output light beam of the laser system according to the electric energy required by pulse charging required by the lithium battery sent to the main control device by the communication device, the laser system sends out a modulated laser beam according to the modulation signal with the characteristics required by pulse charging, and the laser-photovoltaic battery of the aircraft part receives the modulated laser beam and outputs variable current or variable voltage to directly and rapidly charge the lithium battery.
3. The light energy supply device using a discontinuous modulation light source according to claim 1, wherein the electric load is a motor.
4. The light energy supply device adopting the discontinuous modulation light source according to claim 3, wherein the electric energy output by the laser-photovoltaic cell is used for driving a motor.
5. The light energy supply device adopting the discontinuous modulation light source according to claim 3, wherein the motor is a brushed direct current motor, the signal generating device sends out a modulation signal to control the laser system with the modulation function to directly output the modulation signal with the designated duty ratio or the designated pulse amplitude, the modulated laser output is incident to the laser-photovoltaic cell of the aircraft part through a transmission path, the laser-photovoltaic cell directly outputs the modulated driving electric energy, the driving electric energy directly drives the brushed direct current electrode to rotate, and the speed regulation of the motor is realized by controlling the duty ratio or the designated pulse amplitude of the laser pulse.
6. The light energy supply device adopting the discontinuous modulation light source according to claim 5, wherein the motor obtains real-time information in an open-loop control mode or a wireless monitoring mode, and then the real-time information is transmitted back to the main control device through the communication device, and the main control device controls the signal generation device to generate a speed regulation signal.
7. The light energy supply device using discontinuous modulation light source according to claim 1, wherein the modulation signal generated by the signal generating device is a modulation signal comprising a control signal, and the control signal is a control signal for controlling the electric driving device or other signals.
8. The device of claim 7, wherein the laser-photovoltaic cell outputs power including a speed-adjusting signal, and the power is directly used to drive the motor.
9. The light energy supply device adopting the discontinuous modulation light source according to claim 7, further comprising a decoupling device and a switch converter device, wherein the decoupling device comprises a laser-photovoltaic cell, a signal separation device and a signal extraction device which are positioned at a moving end; the decoupling device is used for separating the signal and the energy of the modulated laser output modulation signal; the switching converter device is used for realizing the maximum power output control of the laser-photovoltaic cell.
10. The optical power supply device using a discontinuous modulation light source as claimed in claim 9, wherein the modulation signal of the separated modulated laser output is input to a motor to regulate the speed of the motor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740513A (en) * | 2020-06-10 | 2020-10-02 | 李永强 | Wireless transmission device and system |
| CN113179126A (en) * | 2021-03-04 | 2021-07-27 | 深圳大学 | Multicast unmanned aerial vehicle communication system combining free space laser return and energy transmission |
| CN113541805A (en) * | 2021-06-11 | 2021-10-22 | 南京航空航天大学 | Method for realizing energy-carrying two-way communication based on laser wireless energy transmission system |
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2020
- 2020-01-02 CN CN202010000179.6A patent/CN111049251A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740513A (en) * | 2020-06-10 | 2020-10-02 | 李永强 | Wireless transmission device and system |
| CN113179126A (en) * | 2021-03-04 | 2021-07-27 | 深圳大学 | Multicast unmanned aerial vehicle communication system combining free space laser return and energy transmission |
| CN113541805A (en) * | 2021-06-11 | 2021-10-22 | 南京航空航天大学 | Method for realizing energy-carrying two-way communication based on laser wireless energy transmission system |
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