CN110971142B - Solar energy and wind energy multi-energy complementary small-sized energy collecting device based on TEG and PEG - Google Patents
Solar energy and wind energy multi-energy complementary small-sized energy collecting device based on TEG and PEG Download PDFInfo
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Abstract
The invention provides a solar energy and wind energy multi-energy complementary small energy collecting device based on TEG and PEG, which is formed by coupling a TEG unit arranged at the top, a PEG unit in the middle and an energy management unit at the bottom, wherein the TEG unit comprises a thermoelectric generation component, a heat storage chamber serving as a hot end and a flat heat pipe serving as a cold end; the PEG unit comprises a piezoelectric cantilever beam and a flexible beam or a mass block connected with the free end of the piezoelectric cantilever beam; the fixed end of the piezoelectric cantilever beam is clamped by a clamp and fixed in the middle of the main side wall of the packaging shell, and the lower end face of the flat heat pipe, the packaging shell and the upper end face of the energy management unit jointly form an air duct of the PEG unit; and the energy management unit is integrated by two parts, namely an energy storage and management module of the PEG unit and a TEG booster circuit module, and is used for storing electric energy and supplying electric energy to the outside. The invention has the advantages of compact structure, multiple energy complementation and the like, effectively improves the power generation performance, is clean and pollution-free and saves the cost.
Description
Technical Field
The invention relates to the technical field of multi-energy complementary self-energy supply, in particular to a solar energy and wind energy multi-energy complementary small-sized energy collection device based on TEG and PEG, which can collect solar energy and wind energy in the environment to supply power for a small-sized sensing network and electric equipment and can be applied to scenes such as an intelligent ship sensing network, an ocean intelligent sensing network, agricultural meteorological monitoring node energy supply, forest dangerous case early warning and the like.
Background
Currently, micro devices and systems still mostly use conventional chemical batteries as operating power sources. However, conventional batteries require manual periodic replacement or recharging, especially in remote areas, which can be a cumbersome and costly task. Moreover, the conventional chemical battery has the defects of large volume, short service life, low power density and the like, so that the application of the conventional chemical battery in the aspects of wireless sensing nodes, implanted microsystems and the like is limited to a certain extent. The energy collection technology is a technology for collecting and collecting energy in various surrounding environments and converting the collected energy into electric energy to supply power to electric loads. In recent years, a great deal of research is carried out on energy collectors at home and abroad, the energy collectors can collect and convert energy in the environment into required electric energy, and the energy collectors have the advantages of environmental protection, small size, long service life, easiness in integration and the like, and are ideal schemes for solving the power supply problems of wireless sensing nodes and the like.
In the natural environment, many energy sources are available, such as mechanical energy, thermal energy, optical energy, and the like. The mechanical energy (such as vibration energy, wind energy and the like) is abundant in storage, clean and environment-friendly, and has attracted extensive attention of people for collecting and utilizing the mechanical energy in the environment. Because wind energy is visible everywhere in nature, the wind energy collector has the advantages of being renewable, environment-friendly and the like, related researches on wind energy collection are more and more, and the small wind energy collector gradually becomes one of hot spots of micro-energy research. The self-powered wireless wind speed and temperature monitoring node can be widely applied to the fields of agricultural meteorological monitoring, forest dangerous case early warning and the like. The solar energy has high power density, and is abundant under the condition of outdoor bright sun and high illumination. If the two kinds of energy can be captured at the same time and place at the same time, the two kinds of energy are subjected to complementary power generation and energy supply, the problem of discontinuous output of renewable energy can be effectively solved, various energy sources in the environment can be recovered to a greater extent, and the device has great significance for energy supply of loads.
Therefore, there is a need for a collection device that can effectively capture two energy sources, namely solar energy and wind energy, and effectively perform complementary power generation and energy supply.
Disclosure of Invention
According to the technical problems that the energy output is discontinuous when the existing micro energy collector collects renewable energy or the utilization rate is low and the Power cannot meet a large range in the mechanical energy collection process, the solar energy and wind energy multi-energy complementary small energy collection device based on TEG (Thermoelectric Power Generator) and PEG (Piezoelectric Power Generator) is provided. The device is mainly formed by coupling a TEG unit arranged at the top with a PEG unit arranged at the middle and an energy management unit arranged at the bottom, wherein the TEG unit at the top is rigidly connected and fixed through the top of a packaging shell of the PEG unit, collects energy in the surrounding environment to generate electric energy and outputs the electric energy to the energy management unit, and supplies energy to a load circuit after processing, so that the requirement of a large power range can be met, and a plurality of groups of energy collection devices can be connected in series to supply power to an external load according to the actual situation, so that the power utilization requirement of the load can be met.
The technical means adopted by the invention are as follows:
a solar energy and wind energy multi-complementary small energy collection device based on TEG and PEG is characterized in that the device is formed by coupling a TEG unit arranged at the top, a PEG unit arranged in the middle and an energy management unit arranged at the bottom, the end part of the TEG unit is rigidly connected and fixed with the top of an encapsulation shell of the PEG unit, the encapsulation shell of the PEG unit further comprises a main side wall and side plates connected with two sides of the main side wall, wherein:
the TEG unit comprises a thermoelectric generation component, a heat storage chamber which is arranged at the upper part of the thermoelectric generation component and used as a hot end for providing a heat source, and a flat heat pipe which is arranged at the lower part of the thermoelectric generation component and used as a cold end for dissipating heat; the electric energy generated by the TEG unit is transmitted to the energy management unit through a lead;
the PEG unit comprises a piezoelectric cantilever beam and a flexible beam or a mass block connected with the free end of the piezoelectric cantilever beam; the fixed end of the piezoelectric cantilever beam is clamped by a clamp and fixed in the middle of the main side wall of the packaging shell, and the lower end face of the flat heat pipe of the TEG unit, the packaging shell and the upper end face of the bottom energy management unit jointly form an air duct of the PEG unit; the electric energy generated by the PEG unit is transmitted to the energy management unit through a lead;
and the energy management unit is integrated by two parts, namely an energy storage and management module of the PEG unit and a TEG booster circuit module, and is used for storing electric energy and supplying electric energy externally.
Furthermore, the thermoelectric generation component is formed by arranging thermoelectric generation sheets between an upper copper plate and a lower copper plate, and fixing four corners of the thermoelectric generation sheets by rigid bolts.
Furthermore, the heat storage chamber is a sealing structure and comprises a solar heat absorption film fixed on the copper plate at the upper end in the thermoelectric generation component and a light-transmitting glass cover arranged on the solar heat absorption film.
Furthermore, heat conduction materials are filled between the solar heat absorption film and the copper plate and between the light-transmitting glass cover and the upper surface of the thermoelectric generation component.
Furthermore, the solar heat absorption film adopts a film formed by combining a substrate with a metal-dielectric composite coating and a light interference type coating or other solar heat absorption films with high sunlight absorptivity and low emissivity.
Further, the flat heat pipe is connected with the cold end of the thermoelectric generation piece; one end of the flat heat pipe is connected with the radiating fin in a combined mode to enhance air cooling and radiating.
Furthermore, amplitude limiting protection structures for limiting and protecting the vibration amplitudes of the piezoelectric cantilever beams and the flexible beams or the mass blocks are further arranged on the lower end face of the flat heat pipe of the TEG unit and the upper end face of the energy management unit.
Furthermore, an upper flow passage limiting structure and a lower flow passage limiting structure with arc surfaces are arranged at the air inlet of the PEG unit, and the upper flow passage limiting structure and the lower flow passage limiting structure form an arc air inlet flow passage at the air inlet, so that the contraction type air duct for improving the air speed is formed.
Furthermore, the energy storage and management module consists of a bridge type single-phase rectifier, an electric storage capacitor and a linear voltage stabilizer, wherein the bridge type single-phase rectifier can convert alternating current generated by the piezoelectric cantilever beam into direct current and store the direct current in the electric storage capacitor, when the electric energy stored in the electric storage capacitor meets the requirements of electric appliances of external loads, the power semiconductor device is triggered to release the stored electric energy, and the electric energy is processed by the linear voltage stabilizer and then is output to the external loads; the TEG booster circuit can process electric energy generated by solar thermoelectric power generation and then supply energy to a load.
Compared with the prior art, in the small TEG unit provided by the invention, heat is transferred to the hot end of the thermoelectric generation piece from the heat storage chamber, the heat storage chamber at the top of the thermoelectric generation piece can effectively avoid heat loss, the heat insulation capability of the top of the device is enhanced, and ambient air is prevented from cooling a hot end node. The heat loss due to air convection at the top is more severe when the device surface has a higher convection coefficient. The cold junction and the dull and stereotyped heat pipe of thermoelectric generation piece are connected, and dull and stereotyped heat pipe is connected with the fin, indirectly makes the thermoelectric generation piece cold junction expose in the air, and simultaneously, outside wind can further take away some heats of fin after the PEG unit of bottom flows out, has realized the complementation of the TEG unit at top and the PEG unit of bottom, has improved the generating performance of small-size thermoelectric generation structure.
In the bottom PEG unit provided by the invention, the piezoelectric cantilever beam can respond to the pressure of external wind to generate electric energy, the amplitude limiting protection structure can limit the vibration amplitude of the piezoelectric sheet and the flexible beam, the strain stress is controlled within an allowable range, the fatigue and the damage of a device are prevented, and the reliability is improved. Besides providing protection for piezoelectric cantilever beam and other parts, the encapsulation shell of the PEG unit can also change flow field distribution through pipeline design to promote wind-induced vibration.
The energy management unit can manage and output the electric energy generated by the TEG unit and the PEG unit. The energy management unit is integrated by two parts, namely an energy storage and management module of a PEG unit and a TEG booster circuit module, wherein the energy storage and management module of the PEG unit can convert irregular voltage generated in the vibration process of a piezoelectric plate into stable and available regular voltage and supply power for a load, and the energy storage and management unit consists of a bridge type single-phase rectifier, an electric storage capacitor and a linear voltage stabilizer. The bridge type single-phase rectifier can convert alternating current generated by the piezoelectric plate into direct current, the direct current is stored in the electric storage capacitor, when the electric energy stored in the electric storage capacitor meets the requirements of electric appliances of an external load, the power semiconductor device is triggered to release the stored electric energy, and the electric energy is processed by the linear voltage stabilizer to output the energy of the external load. The booster circuit can process the electric energy generated by the solar TEG power generation unit and supply energy to the load.
The invention has the following advantages:
1. the solar thermoelectric generation system combines solar thermoelectric generation and wind power piezoelectric generation together, can effectively collect solar energy and wind energy in the environment and convert the solar energy and the wind energy into electric energy to supply energy for electric equipment such as a small sensor and the like, is clean and pollution-free, has low cost and is easy to realize.
2. The cold ends of the thermoelectric generation pieces of the solar TEG units at the top of the solar TEG unit radiating heat by adopting the combination of flat plate heat and radiating fins can utilize natural wind to radiate heat without consuming redundant power to radiate heat.
4. According to the invention, the shrinkage type flow channel is arranged in the packaging shell, so that the critical wind speed of wind power piezoelectric work can be reduced, and meanwhile, the wind speed of external wind flowing through the packaging shell can be further improved, so that the heat dissipation plate is further cooled, the cold end temperature of the thermoelectric generation piece is reduced, the multiple utilization of wind energy is realized, and the power generation performance is improved.
5. According to the invention, the booster circuit module of the solar TEG unit and the energy storage and management unit of the PEG unit are integrated and arranged in the pipeline of the packaging shell, so that the space of the device is saved, and the device has great significance for future integration and application under the miniaturization trend of the current electronic equipment and sensor.
Based on the reasons, the method can be widely popularized in the fields of intelligent ship sensing networks, ocean intelligent sensing networks, agricultural meteorological monitoring node energy supply, forest dangerous case early warning and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a solar energy and wind energy multi-energy complementary small-sized energy collecting device based on TEG and PEG.
Fig. 2 is a partial schematic view of the solar TEG of fig. 1 according to the present invention.
FIG. 3 is a state diagram of a plurality of groups of TEG and PEG-based solar and wind energy multi-energy complementary small-sized energy harvesting devices used in cooperation.
In the figure: 1. a TEG unit; 11. a copper plate; 12. a flat heat pipe; 13. a thermoelectric power generation sheet; 14. a solar heat absorbing film; 15. a light-transmitting glass; 16. a side wall; 17. a heat sink; 2. a flow passage restriction structure; 3. an energy management unit; 4. a flexible beam (or mass); 5. an amplitude limiting protection structure; 6. a piezoelectric cantilever.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in figure 1, the invention provides a solar energy and wind energy multi-energy complementary small-sized energy collecting device based on TEG and PEG, which is formed by coupling a TEG unit 1 arranged at the top, a PEG unit arranged in the middle and an energy management unit 3 arranged at the bottom, wherein the end part of the TEG unit 1 is rigidly connected and fixed with the top of a packaging shell of the PEG unit, and the packaging shell of the PEG unit also comprises a main side wall and side plates connected with two sides of the main side wall.
As shown in fig. 2, the TEG unit includes a thermoelectric generation component, a heat storage chamber disposed at an upper portion of the thermoelectric generation component as a hot end for providing a heat source, and a flat heat pipe 12 disposed at a lower portion of the thermoelectric generation component as a cold end for dissipating heat; the electric energy generated by the TEG unit 1 is transmitted to the energy management unit 3 through a lead;
the thermoelectric generation component is formed by arranging a thermoelectric generation sheet 13 between an upper copper plate 11 and a lower copper plate 11 and fixing four corners of the thermoelectric generation sheet by rigid bolts.
The heat storage chamber is a cuboid or other regular cube sealing structure and comprises a solar heat absorption film 14 fixed on an upper copper plate 11 in the thermoelectric generation component and a light-transmitting glass cover arranged on the solar heat absorption film 14, the light-transmitting glass cover comprises light-transmitting glass 15 and side walls 16 fixed with the periphery of the light-transmitting glass 15, and the light-transmitting glass 15 is made of high-light-transmittance materials such as resin-based light-transmitting composite materials; the side walls 16 are constructed of a material having a low thermal conductivity, such as rock wool, resilient foam, or the like.
And heat conduction materials such as heat conduction silica gel, heat conduction silicone grease and the like are filled between the solar heat absorption film 14 and the copper plate 11 and between the light-transmitting glass cover and the upper surface of the thermoelectric generation component.
The solar heat absorption film 14 is a film formed by combining a substrate with a metal-dielectric composite coating or an optical interference type coating or other solar heat absorption films with high sunlight absorptivity and low emissivity.
The flat heat pipe 12 is connected with the cold end of the thermoelectric generation piece; one end of the flat heat pipe is connected with the radiating fins 17 in a combined mode to enhance air cooling and radiating.
According to the top solar TEG unit, sunlight irradiates a solar heat absorption film 14 arranged at the upper end of a thermoelectric generation component through transparent glass, the solar heat absorption film 14 can convert solar energy into heat energy to provide a heat source for the hot end of the thermoelectric generation component, and the cold end adopts a combination mode of a flat heat pipe 12 and a radiating fin 17 to carry out air cooling and heat radiation, so that the cold end and the hot end of the thermoelectric generation component generate a certain temperature difference, and further thermoelectric generation is carried out. Meanwhile, in the process of generating power by external wind flowing through the PEG unit at the bottom, partial heat of the upper flat plate heat pipe 12 can be taken away, the heat dissipation of the cold end is further promoted, the cold end temperature of the thermoelectric generation piece is reduced, and the temperature difference of the cold end and the hot end of the thermoelectric generation piece is increased, so that the power generation performance of the thermoelectric generation unit is improved, and the electric energy generated by the solar thermoelectric generation unit is processed by the booster circuit and then supplies power to the load;
the PEG unit comprises a piezoelectric cantilever beam 6, and a flexible beam 4 or a mass block connected with the free end of the piezoelectric cantilever beam 6; the piezoelectric cantilever beam 6 is formed by clamping a PZT ceramic piezoelectric sheet and a flexible material through a glue or an acrylic plate, and the flexible beam can adopt a PET film or a PTFE film and the like.
The fixed end of the piezoelectric cantilever 6 is clamped by a clamp and fixed in the middle of the main side wall of the packaging shell, and the lower end face of the flat heat pipe 12 of the TEG unit 1, the packaging shell and the upper end face of the bottom energy management unit 3 jointly form an air duct of the PEG unit; an upper flow channel limiting structure 2 and a lower flow channel limiting structure 2 with arc surfaces are arranged at an air inlet of the PEG unit, the upper flow channel limiting structure 2 and the lower flow channel limiting structure 2 form an arc air inlet flow channel at the air inlet, namely a contraction type air channel for improving the air speed is formed, and the air flows through the surfaces and has the effect of increasing the air speed according to the basic principle of hydrodynamics.
The lower end face of the flat heat pipe 12 of the TEG unit 1 and the upper end face of the energy management unit 3 are further provided with amplitude limiting protection structures 5 for limiting and protecting the piezoelectric cantilever beams 6 and the flexible beams 4 or the mass block, and the amplitude limiting protection structures 5 can be baffles with certain heights to prevent the flexible beams 4 from being bent and damaged.
The electric energy generated by the PEG unit is transmitted to the energy management unit 3 through a lead;
the PEG unit in the invention can effectively reduce the critical wind speed of wind-induced vibration power generation by arranging the flexible beam 4 or the mass block on the piezoelectric cantilever beam 6. The amplitude limiting protection structure 5 can limit the vibration amplitude of the piezoelectric sheet and the flexible beam 4, control the strain stress within an allowable range, prevent the fatigue and the damage of a device and improve the reliability. Besides providing protection for the piezoelectric cantilever beam 6 and other components, the encapsulation shell of the PEG unit can change flow field distribution through pipeline design to promote wind-induced vibration, the flow channel is arranged in a contraction type, the improvement of wind speed can be further promoted, the critical wind speed of wind power piezoelectric work is reduced, meanwhile, the further improvement of the wind speed can effectively promote the heat dissipation of the flat heat pipe, and the thermoelectric generation performance is improved.
The energy management unit 3 is integrated by two parts, namely an energy storage and management module of the PEG unit and a TEG booster circuit module, and is used for storing electric energy and externally supplying electric energy.
The energy storage and management module consists of a bridge type single-phase rectifier, an electric storage capacitor and a linear voltage stabilizer, wherein the bridge type single-phase rectifier can convert alternating current generated by the piezoelectric cantilever beam into direct current and store the direct current in the electric storage capacitor, when the electric energy stored in the electric storage capacitor meets the requirements of electric appliances of external loads, the electric storage capacitor triggers the power semiconductor device to release the stored electric energy, and the electric energy is processed by the linear voltage stabilizer and then is output to the external loads; the TEG booster circuit can process electric energy generated by solar thermoelectric power generation and then supply energy to a load.
As shown in fig. 3, a plurality of energy collecting devices provided by the invention can be additionally arranged on a proper occasion to work together to meet the power supply requirement.
The top TEG unit and the middle PEG unit collect solar energy and wind energy in the surrounding environment for complementary energy supply, the problem of unstable output of single renewable energy can be effectively solved, the problems of short persistence and high maintenance cost of the traditional power supply mode can be solved, and the solar energy and wind energy hybrid power supply system has great strategic significance under the background of current energy shortage and increasingly serious environmental pollution.
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 (7)
1. A solar energy and wind energy multi-complementary small energy collection device based on TEG and PEG is characterized in that the device is formed by coupling a TEG unit arranged at the top, a PEG unit arranged in the middle and an energy management unit arranged at the bottom, the end part of the TEG unit is rigidly connected and fixed with the top of an encapsulation shell of the PEG unit, the encapsulation shell of the PEG unit further comprises a main side wall and side plates connected with two sides of the main side wall, wherein:
the TEG unit comprises a thermoelectric generation component, a heat storage chamber which is arranged at the upper part of the thermoelectric generation component and used as a hot end for providing a heat source, and a flat heat pipe which is arranged at the lower part of the thermoelectric generation component and used as a cold end for dissipating heat; one end of the flat heat pipe is connected with the radiating fin in a combined mode to enhance air cooling radiation; the electric energy generated by the TEG unit is transmitted to the energy management unit through a lead;
the PEG unit comprises a piezoelectric cantilever beam and a flexible beam or a mass block connected with the free end of the piezoelectric cantilever beam; the fixed end of the piezoelectric cantilever beam is clamped by a clamp and fixed in the middle of the main side wall of the packaging shell, and the lower end face of the flat heat pipe of the TEG unit, the packaging shell and the upper end face of the bottom energy management unit jointly form an air duct of the PEG unit; an air inlet of the PEG unit is provided with an upper flow passage limiting structure and a lower flow passage limiting structure with arc surfaces, and the upper flow passage limiting structure and the lower flow passage limiting structure form an arc air inlet flow passage at the air inlet, namely a contraction type air channel for improving the air speed is formed; the electric energy generated by the PEG unit is transmitted to the energy management unit through a lead;
the energy management unit is integrated by two parts, namely an energy storage and management module of the PEG unit and a TEG booster circuit module, and is used for storing electric energy and supplying electric energy externally; the energy management unit is integrally encapsulated in the pipeline of the encapsulation shell of the PEG unit.
2. The TEG and PEG-based solar and wind energy multi-complementary small energy harvesting device according to claim 1, wherein the thermoelectric generation component is formed by placing thermoelectric generation pieces between an upper copper plate and a lower copper plate, and fixing four corners of the thermoelectric generation pieces by rigid bolts.
3. The TEG and PEG based solar and wind energy multi-complementary small energy harvesting device according to claim 2, wherein said heat storage chamber is a sealed structure consisting of a solar heat absorbing film fixed on the upper copper plate in said thermoelectric generation part and a light transparent glass cover placed on said solar heat absorbing film.
4. The TEG and PEG based solar and wind energy multi-complementary small energy harvesting device according to claim 3, characterized in that a heat conducting material is filled between said solar heat absorbing thin film and said copper plate, between said light transparent glass cover and the upper surface of said thermoelectric generation component.
5. The TEG and PEG based solar and wind energy multi-complementary small energy harvesting device according to claim 3, wherein said solar heat absorbing film is a film with a substrate combined with a metal-dielectric composite coating, an optical interference type coating or other solar heat absorbing films with high solar absorptivity and low emissivity.
6. The TEG and PEG based solar energy and wind energy multi-energy complementary small-sized energy collection device according to claim 1, wherein an amplitude limiting protection structure for limiting and protecting the vibration amplitude of the piezoelectric cantilever beam and the flexible beam or the mass block is further arranged on the lower end face of the flat heat pipe of the TEG unit and on the upper end face of the energy management unit.
7. The TEG and PEG based solar energy and wind energy multi-energy complementary small-sized energy collection device is characterized in that the energy storage and management module consists of a bridge type single-phase rectifier, a storage capacitor and a linear voltage stabilizer, wherein the bridge type single-phase rectifier can convert alternating current generated by the piezoelectric cantilever beam into direct current and store the direct current in the storage capacitor, when the electric energy stored in the storage capacitor meets the requirements of an electric appliance of an external load, a power semiconductor device is triggered to release the stored electric energy, and the energy is output to the external load after the electric energy is processed by the linear voltage stabilizer; the TEG booster circuit can process electric energy generated by solar thermoelectric power generation and then supply energy to a load.
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