CN109936307A - A kind of mixed tensor collector - Google Patents
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- CN109936307A CN109936307A CN201910323363.1A CN201910323363A CN109936307A CN 109936307 A CN109936307 A CN 109936307A CN 201910323363 A CN201910323363 A CN 201910323363A CN 109936307 A CN109936307 A CN 109936307A
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Abstract
The application proposes a kind of mixed tensor collector, the collector includes acquisition device and generating means, generating means include vibration module, at least two in magnetic field module and wind field module, acquisition device is used to acquire the mixed tensor of generating means generation, realize the vibrational energy that can be acquired simultaneously in nature by acquisition device, at least two energy in wind field energy and magnetic field energy, substantially increase the efficiency and reliability of energy acquisition, improve the output power of collected energy, solves single energy acquisition in the prior art, collecting efficiency is lower, and the lesser technical problem of output power.
Description
Technical field
This application involves energy acquisition technical field more particularly to a kind of mixed tensor collectors.
Background technique
With the development and progress of micro-electromechanical technology, various microsensors and low energy consumption actuator using more and more,
These technologies are while bringing life convenient for human production life, and also along with a series of problems, wherein most critical is just
It is the energy supply problem of equipment.Mainly there are three insufficient for traditional battery-powered: 1) needing frequent charge；2) service life is limited；
3) battery itself is to environment nocuousness.Current universal resolving ideas be by the energy of other forms present in environment (such as light,
Heat, electromagnetism, vibration etc.) it is converted into electric energy, it directly powers for equipment, it is green and never withered that this energy, which comes from ambient enviroment,
It exhausts.
In the related technology, what is be most widely used is the acquisition mode of single energy, for example, vibrational energy acquires, still
The acquisition of single energy has certain limitation, and it is limited that there are collecting energies, and collecting efficiency is lower, output power is lesser asks
Topic.
Summary of the invention
The application is intended to solve at least some of the technical problems in related technologies.
For this purpose, first purpose of the application is to propose a kind of mixed tensor collector, multiple kinds of energy can be acquired simultaneously,
The chief is respectively taken, the efficiency and reliability of energy acquisition is substantially increased, improves output power, is solved single in the prior art
Energy acquisition, collecting efficiency is lower, and the lesser technical problem of output power.
In order to achieve the above object, the application first aspect embodiment proposes a kind of mixed tensor collector, the collector
Including acquisition device and generating means；
The generating means are acted on including at least two in vibration module, magnetic field module and wind field module for generation
Power；
The acquisition device, for acquiring mixed tensor, the mixed tensor is the work generated according to the generating means
Firmly generate.
Optionally, in the application in the first possible implementation, the acquisition device, including cantilever beam and piezoelectricity
Piece, wherein the piezoelectric patches is set to the upper surface of the cantilever beam, applies in the generating means that the cantilever beam receives
Deformation is generated under the active force added, so that the acquisition device exports corresponding energy according to the deformation；Wherein, described outstanding
Arm beam is formed using magnetostriction materials.
Optionally, in second of the application possible implementation, the generating means, including vibration module, it is described
Vibration module, including vibration excitor, the vibration excitor is for generating vibrational excitation, wherein the frequency of the vibrational excitation of the vibration excitor
Rate is identical with the intrinsic frequency of cantilever beam.
Optionally, in the application in the third possible implementation, the generating means, including magnetic field module；It is described
Magnetic field module, including coil, the coil is for generating uniform magnetic field excitation；Wherein, the magnetic field excitation that the coil generates
Frequency is identical with the intrinsic frequency of the cantilever beam.
Optionally, in the 4th kind of possible implementation of the application, the acquisition device is set to the magnetic of the coil
Field center, so that the magnetic field around acquisition device is uniform magnetic field.
Optionally, in the 5th kind of possible implementation of the application, the generating means, including wind field module；It is described
Wind field module, including blower, the blower is for generating wind field excitation.
Optionally, in the 6th kind of possible implementation of the application, the wind field module further includes that wind speed improves dress
It sets, it is that air intake vent is big that the wind speed, which improves device, the narrow horn-like hollow round table structure of air outlet, and the wind speed improves dress
The air outlet adjustable angle set.
Optionally, in the 7th kind of possible implementation of the application, collector further include: the fixed device of cantilever beam is used
It is fixed in the cantilever beam；The fixed device is fixedly connected with the top of the vibration excitor, is used for the exciting
The vibrational excitation that device generates is transferred to the cantilever beam.
Optionally, in the 8th kind of possible implementation of the application, the collector further includes two permanent magnets, described
Two permanent magnets are placed in the both ends of the longitudinal direction of the cantilever beam；Described two permanent magnets, for being applied to the cantilever beam
Add bias magnetic field.
Technical solution provided by the embodiment of the present application may include it is following the utility model has the advantages that
The mixed tensor collector of the application, including acquisition device and generating means, generating means include vibration module, magnetic
At least two in field module and wind field module, acquisition device is used to acquire the mixed tensor of generating means generation, realizes logical
At least two energy in vibrational energy, wind field energy and magnetic field energy in nature can be acquired simultaneously by crossing acquisition device,
The efficiency and reliability for substantially increasing energy acquisition improves the output power of collected energy.
The additional aspect of the application and advantage will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is a kind of structural schematic diagram of mixed tensor collector provided by the embodiment of the present application；
Fig. 2 is the structural schematic diagram of another kind mixed tensor collector provided by the embodiment of the present application；
Fig. 3 is the structural schematic diagram of another mixed tensor collector provided by the embodiment of the present application；
Fig. 4 is a kind of front view of mixed tensor collector provided by the embodiment of the present application；
Fig. 5 is a kind of side view of mixed tensor collector provided by the embodiment of the present application；And
Fig. 6 is the output schematic diagram of collection of energy provided by the present application.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the application, and should not be understood as the limitation to the application.
In order to solve in the prior art, single energy acquires that may be present unstable and lower problem of collecting efficiency,
And the environment in living is complicated and diversified, if multiple kinds of energy can be acquired simultaneously, respectively takes the chief, can greatly improve energy and adopt
The efficiency and reliability of collection, present applicant proposes a kind of mixed tensor collectors, and when mixing acquisition, there are many energy sources, can mention
High-energy output, guarantees the stability and efficiency of output.
Below with reference to the accompanying drawings a kind of mixed tensor collector of the embodiment of the present application is described.
Fig. 1 is a kind of structural schematic diagram of mixed tensor collector provided by the embodiment of the present application.
As shown in Figure 1, collector includes acquisition device 10 and generating means 20.
Generating means 20, including at least two in vibration module 21, magnetic field module 22 and wind field module 23, generating means
20 for generating active force.
Acquisition device 10, for acquiring mixed tensor, mixed tensor is generated according to the active force that generating means 20 generate
's.
It as an example, simultaneously include vibration module 21, magnetic field module 22 and wind field mould Fig. 2 shows generating means 20
The implementation of block 23, that is to say, that acquisition device 10 can acquire the corresponding power of vibrational excitation of the generation of vibration module 21, magnetic
The wind field that the corresponding power of magnetic field excitation and wind field module 23 that field module 22 generates generate motivates the totally 3 kinds of power effects of corresponding wind-force
The mixed tensor of lower generation obtains a variety of mixed tensors by acquiring simultaneously, improves the efficiency of energy acquisition and the function of output
Rate.
The mixed tensor collector of the embodiment of the present application acquires the mixed tensor that generating means generate by acquisition device,
Realize while the acquisition to multiple kinds of energy, compared to the prior art in the mode that only single energy is acquired, mention
The high efficiency of energy acquisition, and improve the output power of energy acquisition.
Based on a upper embodiment, the present embodiment includes vibration module, magnetic field module and wind field module three with generating means
For module, it is illustrated in conjunction with structure of Fig. 3-Fig. 5 to mixed tensor collector.
As shown in figure 3, acquisition device 10, including cantilever beam 101 and piezoelectric patches 102.Piezoelectric patches 102 is set to cantilever beam
101 upper surface generates deformation under the active force that the generating means 20 that cantilever beam 101 receives apply, so that acquisition dress
It sets 10 and corresponding energy is exported according to the deformation of piezoelectric patches 102.
Vibration module 21, including the first drive module 210 and vibration excitor 211, the first drive module 210 is for generating first
Driving signal, first driving signal for drive vibration excitor 211 generate vibrational excitation, while piezoelectric patches 102 be set to it is outstanding
At upper surface on arm beam 101 and close to vibration excitor 211, as shown in figure 4, receiving the biography of cantilever beam 101 to improve piezoelectric patches 102
The vibrational excitation passed increases the deformation of piezoelectric patches 102, increases the output of energy.It is driven as a kind of possible implementation, first
Dynamic model block 210 includes signal generator 2102 and power amplifier 2101, and signal generator 2102 generates sine wave signal all the way,
For example, being denoted as CH1, wherein the power and amplitude of signal CH1 be all it is adjustable, sine wave signal CH1 pass through power amplifier
2101 amplification after, for drive vibration excitor 211 vibrate, generate vibrational excitation, the vibrational excitation pass to cantilever beam 101 so that
Cantilever beam 101 is vibrated, and makes piezoelectric patches 102 deformation occurs, to generate the output of energy.
Magnetic field module 22, including the second drive module 220 and coil 221, the second drive module 220 are driven for generating second
Dynamic signal, second driving signal generate uniform magnetic field excitation for driving coil 221.As a kind of possible realization side
Formula, the second drive module 220 include signal generator 2102 and power amplifier 2201, and signal generator 2102 generates another way
Sine wave signal, for example, being denoted as CH2, wherein the power and amplitude of signal CH2 is all adjustable, sine wave signal CH2 process
Power amplifier 2102 amplify after, for driving coil 221 generate magnetic field excitation, the magnetic field excitation pass to cantilever beam 101 with
So that deformation occurs for cantilever beam 101, and make piezoelectric patches 102 deformation occurs, to generate the output of energy.As a kind of possible
Implementation, coil 221 are Helmholtz coil, and the Helmholtz coil is under the driving effect of driving signal, the magnetic of generation
Center be uniform magnetic field, thus, acquisition device 10 is set to the center of coil 221, in coil 221
Electromagnetic field near heart position is approaches uniformity, consequently facilitating observation and analysis magnetic field excitation, as a kind of possible realization
Mode, can be by the magnetic field strength in the formed magnetic field of gaussmeter measuring coil 221, within a preset range by magnetic field strength difference
The center of distributed areas of magnetic field strength be determined as the center of coil 221 so that acquisition device 10 is in equal
In even magnetic field environment.
It should be noted that the first drive module 210 and the second drive module 220 share same signal hair in the present embodiment
Raw device, in practical application, different signal generators is also can be used in the first drive module 210 and the second drive module 220, together
When, the amplification factor of power amplifier 2101 and power amplifier 2201 can be identical or not identical, those skilled in the art
Member can be not construed as limiting in the present embodiment according to the demand flexible setting of practical application scene.
In the present embodiment, wind field module 23, including blower 231, blower 231 is for generating wind field excitation.Optionally, wind field
Module 23 further includes that wind speed improves device 230, and it is that air intake vent is big that wind speed, which improves device 230, the narrow horn-like open circles of air outlet
Platform structure, and air outlet adjustable angle realize the cross-sectional area for reducing the excitation of the collected wind field of acquisition device 10, and make
Wind field can be with the cantilever beam 101 in face acquisition device 10, while can also improve the wind speed for acting on acquisition device 10, improves
The power to energy collected.
It should be noted that the wind field excitation that the application Wind Field module 23 generates, can pass through the sky among coil 221
Gap acts on cantilever beam 101.In a kind of possible implementation of the embodiment of the present application, as shown in figure 4, collector also wraps
The fixed device 30 of cantilever beam is included, for cantilever beam 101 to be fixed.
In one embodiment of the embodiment of the present application, as shown in figure 5, the fixed device 30 of cantilever beam includes being set to cantilever
Two brackets 31 of 101 upper and lower part of beam, as a kind of possible implementation, two brackets 31 can pass through the side of buckle
Cantilever beam 101 is fixed in formula；As alternatively possible implementation, two brackets 31 can also be by bolt 32 to outstanding
Arm beam 101 is fixed, and optionally, bolt can be 1, or and 2, such as two bolts 32 shown in Fig. 5.Its
In, the fixed device 30 of cantilever beam is fixedly connected with the top of vibration excitor 211, and the vibrational excitation for generating vibration excitor 211 passes
It is handed to cantilever beam 101, the natural resonance frequency of cantilever beam 101 can set a value, for example, 50 hertz, while adjust second
The frequency for the signal that drive module 210 generates is identical with the intrinsic frequency of cantilever beam 101, i.e., is also 50 hertz.To vibration excitor
211 vibrational excitations generated can pass to cantilever beam 101, so that cantilever beam 101 vibrates, and make piezoelectric patches
102 deformation occurs, to form energy output.
Further, as a kind of possible implementation, cantilever beam 101 is magnetostriction materials, for example, iron gallium, due to
When magnetostriction materials work, preset bias magnetic field is needed, therefore, acquisition device 10 further includes two permanent magnets 103, and two
Permanent magnet 103 is placed in the both ends of the longitudinal direction of cantilever beam 101, as shown in figure 4, two permanent magnets 103 are used to be cantilever beam
101 provide a constant bias magnetic fields, so that magnetostriction materials are under the action of bias magnetic field, so that its interior permanent magnet
Son is active, so that the deformation that cantilever beam 101 can extend.Meanwhile acquisition device 10 is in coil 221
Center, coil 221 formed uniform alternating magnetic field and permanent magnet 103 formed bias magnetic field under the action of, meeting
So that apparent magnetostrictive effect occurs for cantilever beam 101, so that the piezoelectric patches 102 for being placed in 101 upper surface of cantilever beam is raw
At deformation, the output of energy is formed.
In turn, therein in generating means 20 while when including vibration module 21, magnetic field module 22 and wind field module 23
Vibrational excitation can be passed to cantilever beam 101 by vibration by vibration excitor 211, and magnetic field excitation can be passed to cantilever beam by coil 221
101, meanwhile, the wind field excitation of formation can be passed to cantilever beam 101 by blower 231, and cantilever beam 101 is receiving a variety of excitations
Afterwards, it may occur that magnetostrictive deformation, so that the piezoelectric patches 102 for being placed in 101 upper surface of cantilever beam can be made to generate deformation, thus
The output of energy is generated, the energy of output is generated under the multi-acting force of vibration, magnetic field and wind field, by adopting simultaneously
Collect multiple kinds of energy, improve energy output efficiency, at the same time it can also improve energy output power, convenient for subsequently through
Conversion circuit is converted to electric energy, the application for power supply.
Further, the output end of acquisition device 10 can also connect display device, for example, oscillograph, it can by oscillograph
To carry out the observation of energy output waveform so that the collector can be used for the scenes such as experimental teaching.
It should be noted that the present embodiment is to include vibration module, magnetic field module and three kinds of wind field module with generating means
What the case where energy source, was illustrated, and include any in vibration module, magnetic field module and wind field module for generating means
The case where one or two combination, principle is identical, repeats no more in the present embodiment, that is to say, that vibration module in the application,
Magnetic field module and wind field module can work independently, and can also be not construed as limiting in the application with work in combination.
The mixed tensor collector of the embodiment of the present application, the cantilever beam and piezoelectric patches in acquisition device are in wind field module, magnetic
Under the action of field module and vibration module, vibration and deformation occurs, so that acquisition device acquires under three kinds of immixture power
To energy, the efficiency of the collected energy of acquisition device is improved, while the value of the power of collected energy can also be improved.
In order to further clearly illustrate the energy collecting device of the application, the present embodiment, which proposes, a kind of to be acquired collector
The energy arrived is applied to the demonstration scene of laboratory energy waveform, is specifically described in conjunction with Fig. 2-5.
Specifically, the first drive module 210 and the second drive module 220 share the same signal generator 2102, signal
Generator 2102 generates two paths of signals, is denoted as CH1 and CH2 respectively, and CH1 and CH2 amplify by corresponding power amplifier respectively
Afterwards, the driving signal CH1 of amplification generates vibrational excitation, and amplified driving signal for driving vibration excitor 101 to carry out vibration
CH2 generates the uniform magnetic field excitation of alternation for driving coil 221, wherein the frequency of vibrational excitation signal is by driving signal CH1
It adjusts, the frequency of magnetic field excitation signal is adjusted by driving signal CH2, if the two frequency is different, acquisition device 10 is collected
Waveform regularity it is very poor, generate and clap shake phenomenon, to need to avoid difference on the frequency as far as possible to improve energy acquisition efficiency and precision
It is different, thus by the frequency of vibrational excitation and the set of frequency of magnetic field excitation be identical frequency in the application, meanwhile, in order to guarantee
The eigentone of the frequency of vibrational excitation, the frequency of magnetic field excitation and cantilever beam is set phase by biggish output voltage
Same frequency.
In turn, vibrational excitation is transferred to cantilever beam 101 by the fixed device 30 of cantilever beam by vibration excitor 211, meanwhile, when outstanding
Arm beam 101 be magnetostriction materials when, cantilever beam 101 be set to two sides permanent magnet 103 formed bias magnetic field effect under,
Internal magnetic pole is active, so that cantilever beam 101 is under the action of bias magnetic field and alternating magnetic field, cantilever beam
101 generate apparent telescopic deformation.And wind field has adjusted wind field module 23 and exports wind under the action of wind speed improves device 230
The wind field excitation of the position of speed and the wind speed for improving output wind field, formation can form active force to cantilever beam 101, increase
The energy of acquisition device 10 exports, can be by hand-held for the relationship of size and output energy size convenient for quantitative analysis wind speed
Formula airspeedometer measures the wind speed of the air outlet of wind field module 23.Therefore, cantilever beam 101 receives magnetic field excitation simultaneously, vibration swashs
The active force with the multiple kinds of energy source of wind field excitation is encouraged, then is placed in the piezoelectric patches 101 of 101 upper surface of cantilever beam in cantilever beam
Under the active force in the 101 multiple kinds of energy sources being subject to can deformation occurs, i.e., the deformation be because the active force in multiple kinds of energy source is formed,
The deformation of piezoelectric patches 102 produces the output of corresponding energy, to improve the efficiency of collected energy, also improves and adopts
The power of the energy collected.
In order to which the output for the energy that cantilever beam 101 generates under the effect of different-energy source can be read, by acquisition device 10
It is electrically connected with oscillograph 41, so that oscillograph 41 can show the output of collected energy, it, can for the ease of quantitative analysis
To access resistance in circuit, resistance is linked on the conducting wire of 102 energy acquisition of piezoelectric patches output, to be seen on oscillograph 41
Examine the indexs such as the voltage of output and the power of output.Fig. 6 is the output schematic diagram of collection of energy provided by the present application, is shown in figure
When the access of different resistance, single energy collect and when multiple kinds of energy mixed collection energy output performance number, can be with from Fig. 6
Find out, the frequency band and amplitude that mixed tensor is collected are better than single energy collection, embody the efficiency of the application energy acquisition compared with
Height, the power of collected energy are also relatively strong.In turn, the collector of the application and rectification circuit are cooperated, by designing electric bridge
Deng, carry out alternating current and direct current conversion, the application of the power supply to product may be implemented, such as to LED illumination, be powered to machine
Energy.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present application, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
It, can also be in addition, can integrate in a processing module in each functional unit in each embodiment of the application
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of mixed tensor collector, it is characterised in that: the collector includes acquisition device and generating means；
The generating means, including at least two in vibration module, magnetic field module and wind field module, for generating active force；
The acquisition device, for acquiring mixed tensor, the mixed tensor is the active force generated according to the generating means
It generates.
2. mixed tensor collector according to claim 1, it is characterised in that:
The acquisition device, including cantilever beam and piezoelectric patches, wherein the piezoelectric patches is set to the upper surface of the cantilever beam,
Generate deformation under the active force that generating means that the cantilever beam receives apply so that the acquisition device according to
The deformation exports corresponding energy；
Wherein, the cantilever beam is formed using magnetostriction materials.
3. mixed tensor collector according to claim 2, which is characterized in that the generating means, including vibration module；
The vibration module, including vibration excitor and the first drive module, wherein first drive module is driven for generating first
Dynamic signal, first driving signal is for driving the vibration excitor to generate vibrational excitation；
The frequency of the vibrational excitation of the vibration excitor is identical with the intrinsic frequency of the cantilever beam.
4. mixed tensor collector according to claim 3, which is characterized in that the generating means, including magnetic field module；
The magnetic field module, including coil and the second drive module, second drive module are used to generate the second driving signal,
Second driving signal is for driving the coil to generate uniform magnetic field excitation；
Wherein, the magnetic field excitation frequency that the coil generates is identical with the intrinsic frequency of the cantilever beam.
5. mixed tensor collector according to claim 4, which is characterized in that
The acquisition device is set to the magnetic field center position of the coil, so that the magnetic field around the acquisition device is equal
Even magnetic field.
6. mixed tensor collector according to claim 2, which is characterized in that the generating means, including wind field module；
The wind field module, including blower, the blower is for generating wind field excitation.
7. mixed tensor collector according to claim 6, it is characterised in that:
The wind field module further includes that wind speed improves device；
The wind speed improves device, is that air intake vent is big, the narrow horn-like hollow round table structure of air outlet, and the wind speed improves dress
The air outlet adjustable angle set.
8. according to any mixed tensor collector of claim 2-7, it is characterised in that:
The collector further includes the fixed device of cantilever beam, for the cantilever beam to be fixed；
The fixed device is fixedly connected with the top of the vibration excitor, the vibrational excitation transmitting for generating the vibration excitor
To the cantilever beam.
9. according to any mixed tensor collector of claim 2-7, which is characterized in that the cantilever beam is magnetostriction
Material；
The acquisition device further includes two permanent magnets, and described two permanent magnets are placed in the two of the longitudinal direction of the cantilever beam
End；
Described two permanent magnets, for applying bias magnetic field to the cantilever beam.
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| CN103595295A (en) * | 2013-11-20 | 2014-02-19 | 重庆大学 | Magnetic/piezoelectric broadband vibration energy collector |
| CN105203203A (en) * | 2015-09-07 | 2015-12-30 | 中国科学院地质与地球物理研究所 | Micro-vibration measurement device based on magnetic field and measurement method thereof |
| CN106803726A (en) * | 2015-11-26 | 2017-06-06 | 清华大学 | Low-frequency vibration electromagnetic energy collector |
| CN106050572A (en) * | 2016-07-16 | 2016-10-26 | 北京工业大学 | Broadband wind-induced vibration piezoelectric energy collector |
| CN108696183A (en) * | 2017-04-12 | 2018-10-23 | 北京工业大学 | A kind of broadband vortex-induced vibration piezoelectric energy collector being installed on high-speed railway |
| CN107302323A (en) * | 2017-07-10 | 2017-10-27 | 天津大学 | Three-dimensional piezoelectric cantilever beam vibrational energy acquisition system |
| CN209982365U (en) * | 2019-04-22 | 2020-01-21 | 清华大学 | Hybrid energy collector |
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