CN115218533A - Refrigeration energy-saving system and method for photovoltaic power generation - Google Patents
Refrigeration energy-saving system and method for photovoltaic power generation Download PDFInfo
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- 238000010248 power generation Methods 0.000 title claims abstract description 35
- 238000005057 refrigeration Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 36
- 239000004065 semiconductor Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000005678 Seebeck effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims 6
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/20—Arrangements for moving or orienting solar heat collector modules for linear movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
- F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
- F24S30/425—Horizontal axis
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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
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
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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
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Abstract
The invention relates to the technical field of photovoltaic power generation and refrigeration, in particular to a refrigeration energy-saving system and a refrigeration energy-saving method for photovoltaic power generation, wherein the system comprises: the solar energy receiving plate is connected with a storage battery, and the storage battery is connected with a refrigerating unit; still include the thermoelectric generation piece, the thermoelectric generation piece comprises a plurality of PN type semiconductors of group, the non-joint end of PN type semiconductor contacts with the working face of solar panel, the joint end of PN type semiconductor contacts with the non-working face of solar panel, the thermoelectric generation piece is connected with the battery. The invention can drive the refrigerating unit by using the thermoelectric force, improves the power of the refrigerating unit, can reduce the electric energy consumption required by the refrigerating unit, and solves the technical problem of poor energy-saving effect of photovoltaic power generation refrigeration.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation and refrigeration, in particular to a refrigeration energy-saving system and method for photovoltaic power generation.
Background
The photovoltaic power generation is a technology for converting light energy into electric energy, and the basic principle is the photovoltaic effect, when photons irradiate on metal, the energy of the photons can be completely absorbed by some electrons in the metal, if the energy absorbed by the electrons is large enough, the internal gravitation of the metal can be overcome to do work, and the photons escape from the surface of the metal and form photoelectrons to form voltage. The possible technical approaches for achieving refrigeration by means of solar energy mainly include two main types: firstly, converting solar energy into heat energy, and refrigerating by utilizing the heat energy; and secondly, converting solar energy into electric energy, and driving related equipment to supply heat and refrigerate by using the electric energy. That is, according to different energy conversion methods, there are mainly the following two methods for solar refrigeration: firstly, the light-electricity conversion is realized, and then electric refrigeration (optical compression refrigeration) is carried out; the second is to perform light-heat conversion and then to refrigerate by heat energy (photoelectric semiconductor refrigeration).
At present, the conventional method adopts the former method, firstly, the optical-electrical conversion is realized, and then the conventional compression type refrigerating system is driven by electric energy to realize refrigeration, namely, the solar receiving panel converts the optical energy into the electric energy, and the electric energy is transmitted to the storage battery through a lead to carry out refrigeration and power supply. In the process of light-electricity conversion, a working surface (a surface facing the sun) of the solar receiving plate continuously receives solar energy, a part of the received solar energy is converted into electric energy according to a photoelectric effect, the rest part of the received solar energy heats the solar receiving plate according to a heat conduction effect, and the non-working surface (the surface not facing the sun) of the solar receiving plate does not receive the solar energy, so that the temperature of the non-working surface of the solar receiving plate is lower than that of the working surface, and the temperature difference can be actually used in the latter mode for refrigeration (seebeck effect), but the actual temperature difference is not utilized, so that the energy-saving effect of photovoltaic power generation refrigeration is poor.
Disclosure of Invention
The invention provides a refrigeration energy-saving system and method for photovoltaic power generation, which solve the technical problem of poor energy-saving effect of photovoltaic power generation refrigeration.
The basic scheme provided by the invention is as follows: a refrigeration economizer system for photovoltaic power generation comprising: the solar energy receiving plate is connected with a storage battery, and the storage battery is connected with a refrigerating unit;
the solar energy collecting device is characterized by further comprising a temperature difference power generation sheet, wherein the temperature difference power generation sheet is composed of a plurality of groups of PN type semiconductors, the non-connection end of each PN type semiconductor is in contact with the working surface of the solar energy receiving plate, the connection end of each PN type semiconductor is in contact with the non-working surface of the solar energy receiving plate, and the temperature difference power generation sheet is connected with the storage battery;
the solar energy collecting device is characterized by further comprising a wind direction monitoring module and a direction adjusting module, wherein the wind direction monitoring module is electrically connected with the direction adjusting module and used for collecting wind direction data, and the direction adjusting module is used for adjusting the orientation of the solar receiving plate according to the wind direction data so that the solar receiving plate is parallel to the wind direction.
The working principle and the advantages of the invention are as follows: under the temperature gradient, current carriers in the PN type semiconductor move from the hot end to the cold end and are accumulated at the cold end, a potential difference is formed inside the PN type semiconductor, a reverse charge flow is generated under the action of the potential difference, when the charge flow and the internal potential difference reach dynamic balance, stable temperature difference electromotive force can be formed at two ends of the PN type semiconductor, and the larger the temperature difference at the two ends of the PN type semiconductor is, the larger the formed temperature difference electromotive force is. In the scheme, the solar receiving panel converts light energy into electric energy, the working surface of the solar receiving panel can continuously receive solar energy in the process of light-electricity conversion, one part of the received solar energy can be converted into the electric energy according to the photoelectric effect, the refrigerating unit is driven by the electric energy to refrigerate, according to the second law of thermodynamics, the solar energy cannot be completely converted into the electric energy, the rest part of the solar energy can heat the solar receiving panel according to the heat conduction effect, the temperature of the non-working surface is lower than that of the working surface due to the fact that the non-working surface of the solar receiving panel does not receive the solar energy, the temperature difference acts on the thermoelectric generation sheet, so that thermoelectric electromotive force is formed at two ends of the thermoelectric generation sheet, the thermoelectric electromotive force can also be used for driving the refrigerating unit, the power of the refrigerating unit is improved due to the thermoelectric electromotive force, the electric energy consumption required by the refrigerating unit can be reduced, the energy-saving effect of photovoltaic power generation refrigeration is improved, the material heat conduction coefficient of the solar receiving panel is low, and the temperature difference between the working surface and the non-working surface is large, so that the thermoelectric force can be fully utilized and the purpose of energy saving is realized. Meanwhile, the direction adjusting module can adjust the orientation of the solar receiving panel according to wind direction data, so that the solar receiving panel is parallel to the wind direction, and the stability of the solar receiving panel in the wind is improved.
The invention can drive the refrigerating unit by utilizing the thermoelectric force, improve the power of the refrigerating unit, reduce the electric energy consumption required by the refrigerating unit and solve the technical problem of poor energy-saving effect of photovoltaic power generation refrigeration.
Further, the storage battery is provided with a first port and a second port, and the output current of the first port is larger than that of the second port; the refrigerating unit is provided with a first interface and a second interface, the first interface is connected with the first port, and the second interface is connected with the second port.
Has the advantages that: the refrigerating unit is equivalently set with two working modes of high power and low power, the electric energy of the high power working mode is generated by the solar receiving panel, and the electric energy of the low power working mode is generated by the thermoelectric generation piece, so that the matching of the two power generation modes and the two refrigerating powers can be realized, the solar energy can be used as much as possible, and the energy-saving effect is improved.
Furthermore, a first temperature sensor and a second temperature sensor are respectively arranged on the working surface and the non-working surface of the solar receiving plate, the first temperature sensor is used for detecting the temperature of the working surface of the solar receiving plate, and the second temperature sensor is used for detecting the temperature of the non-working surface of the solar receiving plate; the first temperature sensor and the second temperature sensor are both connected with the controller, the controller is used for calculating the temperature difference value between the working surface and the non-working surface and judging whether the temperature difference value is larger than a temperature difference threshold value, and when the temperature difference value is larger than the temperature difference threshold value, the controller is also used for controlling the second interface to be communicated with the second port.
Has the advantages that: only when the temperature difference between the working surface and the non-working surface is large enough, the generated thermoelectric electromotive force can drive the refrigerating unit to work alone, if the temperature difference between the working surface and the non-working surface is small, the electric energy generated by the temperature difference is stored in the storage battery, so that the electric energy generated by the temperature difference and the photovoltaic effect drive the refrigerating unit together, and the electric energy generated by the temperature difference is prevented from being too small to be wasted.
Furthermore, a plurality of water bags are arranged on the non-working surface of the solar receiving plate and are arranged in an array.
Has the advantages that: the water bags can absorb the heat of the non-working surface of the solar receiving plate, increase the temperature difference between the working surface and the non-working surface, improve the thermoelectric force and be beneficial to the full utilization of solar energy.
Further, the surface of thermoelectric generation piece is equipped with the heat insulation layer.
Has the advantages that: prevent the loss of heat of the thermoelectric generation piece, reduce the temperature difference at the two ends of the thermoelectric generation piece, so as to avoid reducing the thermoelectric force.
Further, the number of the solar receiving plates is multiple, and the solar receiving plates are arranged in an array mode.
Has the advantages that: the plurality of solar receiving plates are arranged in an array mode, so that the solar energy is received more uniformly, the electric energy can be accumulated more and less, the electric energy converted by the solar energy is fully utilized by utilizing the scale effect, and the utilization effect of the solar energy is improved.
Furthermore, the refrigerating unit is connected with a fan outlet unit.
Has the advantages that: the air outlet unit can blow out cold air and is suitable for various environments.
Furthermore, the refrigerating unit comprises a plurality of refrigerating machines which are arranged in parallel, and the air outlet unit comprises a plurality of air outlet machines which are arranged in parallel.
Has the advantages that: the influence on refrigeration when a refrigerator or an air outlet machine breaks down is prevented.
Based on the refrigeration energy-saving system for photovoltaic power generation, the invention also provides a refrigeration energy-saving method for photovoltaic power generation, which comprises the following steps:
s1, converting light energy into electric energy by using a photovoltaic effect through a solar receiving panel, converting heat energy into electric energy by using a Seebeck effect through a thermoelectric generation piece, and guiding the converted electric energy into a storage battery;
s2, detecting the working surface temperature of the solar receiving plate by the first temperature sensor, and detecting the non-working surface temperature of the solar receiving plate by the second temperature sensor;
s3, the controller calculates the temperature difference value between the working surface and the non-working surface and judges whether the temperature difference value is larger than a temperature difference threshold value or not, and when the temperature difference value is larger than the temperature difference threshold value, the controller controls the second interface to be communicated with the second interface;
and S4, refrigerating by the refrigerating unit.
The working principle and the advantages of the invention are as follows: in the process of light-electricity conversion, the working surface of the solar receiving plate can continuously receive solar energy, one part of the received solar energy can be converted into electric energy according to photoelectric effect, the refrigerating unit is driven by the electric energy to refrigerate, the rest solar energy can heat the solar receiving plate according to heat conduction effect, and the non-working surface of the solar receiving plate does not receive the solar energy, so that the temperature of the non-working surface is lower than that of the working surface, and the temperature difference acts on the thermoelectric generation sheet, so that thermoelectric electromotive force is formed at two ends of the thermoelectric generation sheet and can be used for driving the refrigerating unit, the electric energy consumption required by the refrigerating unit can be reduced, and the energy-saving effect of photovoltaic power generation refrigeration is improved; meanwhile, only when the temperature difference between the working surface and the non-working surface is large enough, the generated thermoelectric electromotive force can drive the refrigerating unit to work alone, and if the temperature difference between the working surface and the non-working surface is small, the electric energy generated by the temperature difference is stored in the storage battery, so that the electric energy generated by the temperature difference and the photovoltaic effect drive the refrigerating unit together, and the electric energy generated by the temperature difference is prevented from being too small and being wasted.
Drawings
Fig. 1 is a system block diagram of an embodiment of a refrigeration energy-saving system for photovoltaic power generation according to the present invention.
Fig. 2 is a second system block diagram of an embodiment of the refrigeration energy-saving system for photovoltaic power generation according to the present invention.
Fig. 3 is a schematic structural diagram of a refrigeration energy-saving system in accordance with an embodiment 3 of the present invention.
Detailed Description
The following is further detailed by the specific embodiments:
the reference numbers in the drawings attached hereto include: base 1, electric telescopic handle 2, fixing base 3, driving motor 4, perpendicular riser 5, mount pad 6, photovoltaic board 7, drive wheel 8, clean layer 9, inoxidizing coating 10, driving chain 11.
Example 1
An embodiment is substantially as shown in figure 1, comprising: the solar energy receiving plate is connected with a storage battery, and the storage battery is connected with a refrigerating unit; still include the thermoelectric generation piece, the thermoelectric generation piece comprises a plurality of PN type semiconductors of group, the non-joint end of PN type semiconductor contacts with the working face of solar panel, the joint end of PN type semiconductor contacts with the non-working face of solar panel, the thermoelectric generation piece is connected with the battery.
In this embodiment, the number of the solar receiving panels is plural, the solar receiving panels are arranged in an array, for example, the number of the solar receiving panels is M × N, M is the number of the horizontal rows of the solar receiving panels, N is the number of the horizontal rows of the solar receiving panels, and the plurality of solar receiving panels are arranged in an array, so that the solar receiving is uniform, the electric energy accumulation can be reduced to a large extent, the electric energy converted by the solar energy can be fully utilized by utilizing the scale effect, and the utilization effect of the solar energy can be improved. The refrigerating unit is connected with out fan group, goes out fan group and can blow off cold wind, can be applicable to multiple environment, refrigerating unit includes the refrigerator that a plurality of set up side by side, go out fan group including a plurality of air-out machine that sets up side by side, say that the quantity of refrigerator and air-out machine is 3 ~ 5, influences refrigeration when preventing a refrigerator or the break down of air-out machine. The non-working surface of the solar receiving plate is provided with a plurality of water bags which are arranged in an array manner, and the water bags can absorb the heat of the non-working surface of the solar receiving plate, increase the temperature difference between the working surface and the non-working surface, improve the thermoelectromotive force and facilitate the full utilization of solar energy; the surface of thermoelectric generation piece is equipped with the heat insulation layer, for example insulating rubber, prevents that thermoelectric generation piece heat from scattering and disappearing, reduces the difference in temperature at thermoelectric generation piece both ends to reduce the thermoelectromotive force.
As one preferable scheme, the storage battery is provided with a first port and a second port, the output current of the first port is greater than the output current of the second port, for example, the output current of the first port is 0.10A, and the output current of the second port is 0.02A; the refrigerating unit is provided with a first interface and a second interface, the first interface is connected with the first interface through a lead, the second interface is connected with the second interface through a lead, the power of the refrigerating unit is in direct proportion to the square of the current of the refrigerating unit, namely, two working modes of high power and low power are set for the refrigerating unit, the electric energy of the high power working mode is generated by a solar receiving plate, and the electric energy of the low power working mode is generated by a thermoelectric generation sheet, so that the matching of the two power generation modes and the two refrigerating powers can be realized, the solar energy can be used as much as possible, and the energy-saving effect is improved.
As a second preferable scheme, as shown in fig. 2, a first temperature sensor and a second temperature sensor are respectively arranged on the working surface and the non-working surface of the solar receiving panel, the first temperature sensor is used for detecting the temperature of the working surface of the solar receiving panel, the second temperature sensor is used for detecting the temperature of the non-working surface of the solar receiving panel, and the first temperature sensor and the second temperature sensor both adopt thermocouple sensing temperature sensors with the sensitivity of 5-40 microvolts/DEG C; the first temperature sensor and the second temperature sensor are both connected with the controller, the controller adopts a single chip microcomputer, the controller is used for calculating the temperature difference value of the working surface and the non-working surface and judging whether the temperature difference value is larger than a temperature difference threshold value, and when the temperature difference value is larger than the temperature difference threshold value, the controller is also used for controlling the second interface to be communicated with the second port. Only when the temperature difference between the working surface and the non-working surface is large enough, the generated thermoelectric electromotive force can drive the refrigerating unit to work alone, if the temperature difference between the working surface and the non-working surface is small, the electric energy generated by the temperature difference is stored in the storage battery, so that the electric energy generated by the temperature difference and the photovoltaic effect drive the refrigerating unit together, and the electric energy generated by the temperature difference is prevented from being too small to be wasted.
In this embodiment, carriers in the PN type semiconductor move from the hot end to the cold end and are accumulated at the cold end under a temperature gradient, a potential difference is formed inside, a reverse charge flow is generated under the action of the potential difference, when the charge flow and the internal potential difference reach a dynamic balance, stable thermoelectromotive force can be formed at two ends of the PN type semiconductor, and the larger the temperature difference between the two ends of the PN type semiconductor is, the larger the formed thermoelectromotive force is. In the scheme, the solar receiving plate converts light energy into electric energy, the working surface of the solar receiving plate can continuously receive solar energy in the process of light-electricity conversion, one part of the received solar energy can be converted into the electric energy according to a photoelectric effect, a refrigerating unit is driven by the electric energy to refrigerate, according to the second law of thermodynamics, the solar energy cannot be completely converted into the electric energy, the rest part of the solar energy can heat the solar receiving plate according to a heat conduction effect, the temperature of the non-working surface is lower than that of the working surface due to the fact that the non-working surface of the solar receiving plate does not receive the solar energy, the temperature difference acts on the thermoelectric generation sheet, two ends of the thermoelectric generation sheet form thermoelectric electromotive force, the thermoelectric electromotive force can also be used for driving the refrigerating unit, the power consumption of the refrigerating unit is improved, the energy-saving effect of photovoltaic power generation refrigeration is improved, the material heat conduction coefficient of the solar receiving plate is low, the temperature difference between the working surface and the non-working surface is large, and therefore the thermoelectric electromotive force can be fully utilized and the purpose of energy saving is achieved.
Example 2
The difference from embodiment 1 is only that, in view of embodiment 1, the present embodiment also discloses a refrigeration energy-saving method for photovoltaic power generation, including the steps of: firstly, a solar receiving plate converts light energy into electric energy by utilizing a photovoltaic effect, a thermoelectric generation piece converts heat energy into electric energy by utilizing a Seebeck effect, and the electric energy obtained by conversion is led into a storage battery; then, the first temperature sensor detects the working surface temperature of the solar receiving plate, and the second temperature sensor detects the non-working surface temperature of the solar receiving plate; then, the controller calculates the temperature difference value between the working surface and the non-working surface and judges whether the temperature difference value is larger than a temperature difference threshold value, and when the temperature difference value is larger than the temperature difference threshold value, the controller controls the second interface to be communicated with the second port; and finally, refrigerating by the refrigerating unit.
In the embodiment, in the process of light-electricity conversion, the working surface of the solar receiving plate can continuously receive solar energy, one part of the received solar energy can be converted into electric energy according to a photoelectric effect, the electric energy drives the refrigerating unit to refrigerate, the rest part of the solar energy can heat the solar receiving plate according to a heat conduction effect, and the non-working surface of the solar receiving plate does not receive the solar energy, so that the temperature of the non-working surface is lower than that of the working surface, and the temperature difference acts on the thermoelectric generation sheet, so that thermoelectric electromotive force is formed at two ends of the thermoelectric generation sheet, and can also be used for driving the refrigerating unit, thereby reducing the electric energy consumption required by the refrigerating unit and improving the energy-saving effect of photovoltaic power generation refrigeration; meanwhile, only when the temperature difference between the working surface and the non-working surface is large enough, the generated thermoelectric electromotive force can drive the refrigerating unit to work alone, and if the temperature difference between the working surface and the non-working surface is small, the electric energy generated by the temperature difference is stored in the storage battery, so that the electric energy generated by the temperature difference and the electric energy generated by the photovoltaic effect drive the refrigerating unit together, and the phenomenon that the electric energy generated by the temperature difference is too small is avoided.
Example 3
The difference from the embodiment 2 is only that, as shown in fig. 3, the photovoltaic module is included, the photovoltaic module includes a photovoltaic panel 7 (i.e. a solar receiving panel), a wind direction monitoring module, a wind speed monitoring module, an electricity storage module and a direction adjusting module, and the photovoltaic panel 7 is electrically connected with the electricity storage module; the photovoltaic panel 7 is provided with a base 1, the electricity storage module is arranged in the base 1 and adopts a 12V 200AH lithium battery; the wind direction monitoring module is used for collecting wind direction data, the wind speed monitoring module is used for collecting wind speed data, the wind direction monitoring module is electrically connected with the wind speed monitoring module, and the direction adjusting module is used for adjusting the orientation of the photovoltaic panel 7 according to the wind direction data so that the photovoltaic panel 7 is parallel to the wind direction.
The improved electric telescopic handle is characterized in that a bearing seat is arranged in the middle of the upper surface of the base 1, an electric telescopic rod 2 passing through the bearing seat is arranged inside the base 1, the electric telescopic rod 2 is a rotatable electric telescopic rod 2, a fixing seat 3 is arranged at the top of the electric telescopic rod 2, and two arc-shaped hinged plates which are parallel to each other are arranged on the upper surface of the fixing seat 3. The photovoltaic panel 7 bottom is equipped with mount pad 6, 6 lower surfaces of mount pad are equipped with the perpendicular riser 5 with the looks adaptation of arc articulated board, perpendicular riser 5 transversely is provided with the rotation axis. The photovoltaic panel is characterized in that a through hole for a rotating shaft to penetrate is formed in the surface of the arc-shaped hinged plate, a motor 4 is arranged on one side of the arc-shaped hinged plate, the motor 4 is electrically connected with the controller, an output shaft of the motor 4 is in transmission connection with the rotating shaft, and the direction adjusting module is used for controlling the orientation of the photovoltaic panel 7 by controlling the rotation of the output shafts of the electric telescopic rod 2 and the motor 4.
The photovoltaic module further comprises a height adjusting module, and the height adjusting module is used for adjusting the length of the electric telescopic rod 2. The direction adjusting module is provided with a first wind speed threshold value and a second wind speed threshold value, when wind speed reaches the first wind speed threshold value, the direction adjusting module adjusts the orientation of the photovoltaic panel 7 according to wind direction data, so that the photovoltaic panel 7 is parallel to the wind direction, when the wind speed reaches the first wind speed threshold value, the direction adjusting module controls the photovoltaic panel 7 to be parallel to the wind direction according to the wind direction data, the resistance of wind borne by the photovoltaic panel 7 is reduced, the probability that the photovoltaic panel 7 is damaged or blown away in strong wind weather is reduced, when the wind speed reaches the second wind speed threshold value, the direction adjusting module is further used for controlling the photovoltaic panel 7 to be parallel to the base 1, the height adjusting module controls the electric telescopic rod 2 to shrink, the height of the photovoltaic panel 7 is reduced, the photovoltaic panel 7 is enabled to be close to the base 1 as far as possible, the situation that the swing range is too large in the wind due to the electric telescopic rod 2 is avoided, and the stability in the wind is improved.
In addition, a board surface cleaning mechanism is further arranged and comprises a cleaning assembly, a transmission mechanism and a water storage tank; the transmission mechanism comprises a transmission chain 11, transmission wheels 8 and a driving motor 4, the transmission wheels 8 are symmetrically arranged at two ends of the photovoltaic panel 7, the driving motor 4 is used for driving the transmission wheels 8 to rotate, the transmission chain 11 is connected and arranged at the periphery of the transmission wheel 8 at the same side, and a cloth shaft is arranged between the transmission wheels 8 at any end; the cleaning assembly comprises a cleaning plate and a connecting water pipe; the cleaning plate comprises an protective layer 10 and a cleaning layer 9, a cavity is arranged between the protective layer 10 and the cleaning layer 9, a connecting water pipe is arranged on the side face of the cleaning plate, the cavity is communicated with the reservoir through the connecting water pipe, the cleaning plate is integrally made of flexible materials, one end of the cleaning plate is fixedly connected with the cloth shaft, two sides of the other end of the cleaning plate are fixedly connected with a transmission chain 11, the cleaning plate can cover the surface of the photovoltaic plate 7 along with the transmission chain 11 through rotation of a driving wheel 8 in different directions, and the cleaning plate can also be wound on the surface of the cloth shaft along with rotation of the driving wheel 8. The outer surface of the cleaning layer 9 is wavy, the surface of the cleaning layer is provided with a brush, the arc-shaped top end in contact with the surface of the photovoltaic panel 7 is provided with a water outlet, and a check valve is arranged at the water outlet.
When the wind speed reaches a first wind speed threshold value, the driving motor 4 drives the driving wheel 8 to rotate so as to unfold the cleaning plate, and when the wind speed is lower than the first wind speed threshold value, the driving motor 4 drives the driving wheel 8 to rotate so as to fold the cleaning plate. When the water storage tank is specifically implemented, in the unfolding process of the cleaning plate, the cavity in the cleaning plate is unfolded, and water in the water storage tank is sucked into the cavity under the action of negative pressure; after the cleaning plate is completely unfolded, an air channel is formed between the outer surface of the cleaning layer 9 and the photovoltaic plate 7, when strong wind blows, the pressure intensity in the channel is different due to the width change of the channel (Bernoulli principle), and water in the cavity in the cleaning plate is sucked out under the action of negative pressure due to the fact that the water outlet hole is formed in the arc-shaped top end, in contact with the plate surface of the photovoltaic plate 7, of the outer surface of the cleaning layer 9, so that the cleaning effect on the plate surface of the photovoltaic plate 7 is achieved; in addition, because of the whole flexible material that adopts of cleaning layer 9, so the outer surface of cleaning layer 9 can produce certain undulant deformation under the wind-force effect to make the brush on its surface can scrub photovoltaic board 7 face, improve its clean effect.
The foregoing are embodiments of the present invention and are not intended to limit the scope of the invention to the particular forms set forth in the specification, which are set forth in the claims below, but rather are to be construed as the full breadth and scope of the claims, as defined by the appended claims, as defined in the appended claims, in order to provide a thorough understanding of the present invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. A refrigeration economizer system for photovoltaic power generation comprising: the solar energy receiving plate is connected with a storage battery, and the storage battery is connected with a refrigerating unit;
the solar thermoelectric generation device is characterized by further comprising a thermoelectric generation piece, wherein the thermoelectric generation piece is composed of a plurality of groups of PN type semiconductors, the non-connection end of the PN type semiconductor is in contact with the working surface of the solar receiving plate, the connection end of the PN type semiconductor is in contact with the non-working surface of the solar receiving plate, and the thermoelectric generation piece is connected with a storage battery;
the solar energy collecting device is characterized by further comprising a wind direction monitoring module and a direction adjusting module, wherein the wind direction monitoring module is electrically connected with the direction adjusting module and used for collecting wind direction data, and the direction adjusting module is used for adjusting the orientation of the solar receiving plate according to the wind direction data so that the solar receiving plate is parallel to the wind direction.
2. The cooling and energy saving system for photovoltaic power generation as claimed in claim 1, wherein the storage battery is provided with a first port and a second port, and the output current of the first port is larger than that of the second port; the refrigerating unit is provided with a first interface and a second interface, the first interface is connected with the first interface, and the second interface is connected with the second interface.
3. The cooling and energy saving system for photovoltaic power generation as claimed in claim 2, wherein the working surface and the non-working surface of the solar receiving panel are respectively provided with a first temperature sensor and a second temperature sensor, the first temperature sensor is used for detecting the temperature of the working surface of the solar receiving panel, and the second temperature sensor is used for detecting the temperature of the non-working surface of the solar receiving panel; the first temperature sensor and the second temperature sensor are both connected with the controller, the controller is used for calculating the temperature difference value between the working surface and the non-working surface and judging whether the temperature difference value is larger than a temperature difference threshold value, and when the temperature difference value is larger than the temperature difference threshold value, the controller is also used for controlling the second interface to be communicated with the second port.
4. The cooling and energy saving system for photovoltaic power generation as claimed in claim 3, wherein the non-working surface of the solar receiving panel is provided with a plurality of water bags, and the water bags are arranged in an array.
5. The cooling and energy saving system for photovoltaic power generation as claimed in claim 4, wherein the surface of the thermoelectric generation sheet is provided with a heat insulating layer.
6. The cooling and energy saving system for photovoltaic power generation as claimed in claim 5, wherein the number of the solar receiving panels is multiple, and the solar receiving panels are arranged in an array.
7. The cooling and energy saving system for photovoltaic power generation as claimed in claim 6, wherein the refrigerating unit is connected with an air outlet fan unit.
8. The system of claim 7, wherein the chiller unit comprises a plurality of parallel refrigerators, and the air outlet unit comprises a plurality of parallel air outlets.
9. A refrigeration energy-saving method for photovoltaic power generation is characterized by comprising the following steps:
s1, converting light energy into electric energy by a solar receiving plate through a photovoltaic effect, converting heat energy into electric energy by a thermoelectric generation piece through a Seebeck effect, and introducing the converted electric energy into a storage battery;
s2, detecting the working surface temperature of the solar receiving plate by a first temperature sensor, and detecting the non-working surface temperature of the solar receiving plate by a second temperature sensor;
s3, the controller calculates the temperature difference value between the working surface and the non-working surface and judges whether the temperature difference value is larger than a temperature difference threshold value or not, and when the temperature difference value is larger than the temperature difference threshold value, the controller controls the second interface to be communicated with the second interface;
and S4, refrigerating by the refrigerating unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210907625.0A CN115218533B (en) | 2022-07-29 | 2022-07-29 | Refrigerating energy-saving system and method for photovoltaic power generation |
| PCT/CN2023/073830 WO2024021550A1 (en) | 2022-07-29 | 2023-01-30 | Energy-saving system and method for photovoltaic power generation refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210907625.0A CN115218533B (en) | 2022-07-29 | 2022-07-29 | Refrigerating energy-saving system and method for photovoltaic power generation |
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| CN115218533A true CN115218533A (en) | 2022-10-21 |
| CN115218533B CN115218533B (en) | 2023-11-24 |
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| WO (1) | WO2024021550A1 (en) |
Cited By (1)
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| WO2024021550A1 (en) * | 2022-07-29 | 2024-02-01 | 重庆跃达新能源有限公司 | Energy-saving system and method for photovoltaic power generation refrigeration |
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| WO2024021550A1 (en) | 2024-02-01 |
| CN115218533B (en) | 2023-11-24 |
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