CN109217812A - Cooling device of photovoltaic module, photovoltaic module and photovoltaic power generation system - Google Patents
Cooling device of photovoltaic module, photovoltaic module and photovoltaic power generation system Download PDFInfo
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- CN109217812A CN109217812A CN201811177532.7A CN201811177532A CN109217812A CN 109217812 A CN109217812 A CN 109217812A CN 201811177532 A CN201811177532 A CN 201811177532A CN 109217812 A CN109217812 A CN 109217812A
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- Prior art keywords
- cooling
- photovoltaic module
- cooling device
- pipeline
- photovoltaic
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- 238000001816 cooling Methods 0.000 title claims abstract description 98
- 238000010248 power generation Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 75
- 239000003507 refrigerant Substances 0.000 claims abstract description 42
- 238000005086 pumping Methods 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 38
- 230000006872 improvement Effects 0.000 description 29
- 239000000463 material Substances 0.000 description 14
- 239000005341 toughened glass Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 230000007704 transition Effects 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 238000003379 elimination reaction Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- 238000007731 hot pressing Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
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Classifications
-
- 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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
-
- 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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- Photovoltaic Devices (AREA)
Abstract
The invention provides a cooling device of a photovoltaic assembly, the photovoltaic assembly and a photovoltaic power generation system, wherein the cooling device of the photovoltaic assembly comprises a cooling channel which is arranged in a back plate at the rear side of the photovoltaic assembly and is communicated with a cold source, and the cooling channel is distributed in the whole area of the back plate so as to exchange heat and cool the whole heating area of the photovoltaic assembly through a circulating refrigerant in the cooling channel; the device also comprises a liquid pumping device, a temperature sensor and a controller; the photovoltaic module comprises a cooling device arranged in the back plate; the photovoltaic power generation system comprises a photovoltaic module and a support. According to the photovoltaic module, the water-cooling pipeline is arranged in the photovoltaic module back plate, and the opening and closing of the water-cooling pipeline are controlled by collecting and analyzing the data of the temperature sensor on the back surface of the photovoltaic module, so that the working temperature of the photovoltaic module can be more efficiently reduced and controlled within a certain range, the output power of the module is greatly improved, the generated energy is increased, the service life is prolonged, and the risk of fire caused by a hot spot effect is reduced.
Description
Technical field
The present invention relates to technical field of photovoltaic modules, cooling device, photovoltaic module more particularly, to a kind of photovoltaic module
And photovoltaic generating system.
Background technique
Solar energy is inexhaustible green energy resource, and solar battery can utilize photovoltaic effect by the sun
Electric energy, application such as solar photovoltaic assembly, solar street light, photovoltaic curtain wall, the photovoltaic green-house of solar battery can be converted into
All gradually close to people's lives.
Existing photovoltaic cell transfer efficiency has moved closer to theoretical boundary, seeks to break through from the direction and improves photovoltaic power generation
It measures extremely difficult.But photovoltaic generating system is in practical applications, power generation performance is by the temperature of ambient enviroment, wind speed, illumination
Intensity etc. is affected.Therefore, reinforce that actual power generation can be greatly improved to the maintenance and management of photovoltaic generating system.Its
In, core-photovoltaic module operating temperature of photovoltaic generating system is an important factor for influencing photovoltaic generating system performance
One of.
Applicants have discovered that at least there is following technical problem in the prior art:
1, temperature is higher when existing photovoltaic module is due to work, and component output power substantially reduces, electric quantity loss is larger,
Studies have shown that the temperature of photovoltaic module is every to increase 1 DEG C, and power reduces 0.35% within the scope of 20~100 DEG C.；And component is long-term
It in higher temperature, is persistently damaged, service life is greatly decreased；2, photovoltaic module occurs to generate big calorimetric when hot spot effect
There is the risk that fire occurs in amount, part sharply temperature rise.
Therefore, how to solve that photovoltaic module temperature in use is excessively high to lead to that its generated output is low, the service life is short, fire
The big problem of risk becomes those skilled in the art's important technological problems to be solved.
Summary of the invention
The cooling device for being designed to provide a kind of photovoltaic module of first aspect present invention, to solve to deposit in the prior art
The excessively high technical problem of photovoltaic module temperature.
To achieve the above object, the present invention provides following technical schemes:
A kind of cooling device of photovoltaic module provided by the invention, including setting is on rear side of the photovoltaic module in backboard and cold source
The cooling channel being connected, the cooling channel are covered with the backboard whole region with cold by the circulation in the cooling channel
Matchmaker carries out heat exchange cooling to the entire hot zone of photovoltaic module.
As a further improvement of the present invention, the cooling channel includes the refrigerant pipeline that disk is located in the backboard, institute
It states refrigerant pipeline both ends and passes through input duct and liquid outlet pipe respectively and be connected to the cold source.
As a further improvement of the present invention, the refrigerant pipeline diameter is the 1/3 of the back plate thickness, and the refrigerant
Pipeline central axis is located at the center in the back plate thickness direction.
As a further improvement of the present invention, the refrigerant pipeline includes the first main line and at least two first branch pipes
Road, first main line one end are connect with the input duct, and all first bye-pass both ends are respectively with described
The one main line other end and the liquid outlet pipe are connected in parallel.
As a further improvement of the present invention, the refrigerant pipeline includes main cooling pipeline and auxiliary temperature-reducing interconnected
Pipeline, the main cooling pipeline are connect with the input duct, and the auxiliary temperature-reducing pipeline is connect with the liquid outlet pipe, described
Main cooling pipeline disk, which is located on backboard, corresponds to the main fever zone position of photovoltaic module, and it is right on backboard that the auxiliary temperature-reducing pipeline disk is located at
Answer photovoltaic module time fever zone position.The main hot zone of photovoltaic module refers at the photovoltaic module back side equipped with intelligent wiring box, power
The region of the controllers such as optimizer, Miniature inverter；Due to that can discharge amount of heat when controller work, which will be anxious
Play rises, even more than 80 DEG C of the safe working temperature of photovoltaic module, therefore refrigerant is taken out from cold source through pumping device in the design
It flows through input duct after out to enter in main cooling pipeline, main cooling pipeline disk is located in main hot zone, so that low cold of temperature
Matchmaker preferentially flows through the region, and the refrigerant of low temperature can take away most of heat that controller work generates at this time, effectively to the region
Cool down.
As a further improvement of the present invention, the main cooling pipeline and the auxiliary temperature-reducing pipeline include the second supervisor
Road and at least two second bye-passes, all second bye-pass one end are in parallel with second main line one end to be connected
It connects.
As a further improvement of the present invention, first bye-pass and/or second bye-pass is S-shaped, rectangular-ambulatory-plane,
Circular concentric is arranged in the backboard.
It as a further improvement of the present invention, further include the pumping device being arranged in the input duct.
As a further improvement of the present invention, the pumping device is pump, and the flow of the pump is adjustable.
It as a further improvement of the present invention, further include temperature sensor and controller, the temperature sensor setting exists
On the backboard, the controller is electrically connected with the temperature sensor and the pumping device.
As a further improvement of the present invention, the quantity of the temperature sensor be two, respectively first sensor and
Second sensor.
As a further improvement of the present invention, the first sensor and the second sensor are fixed in a manner of pasting
In the back plate surface.
As a further improvement of the present invention, the first sensor and second sensor detection temperature are above and set
When determining temperature, the controller controls the pumping device and is actuated for cooling heat exchange；The first sensor and described second
When sensor detection temperature is below set temperature, it is out of service that the controller controls the pumping device；Described first passes
Sensor and second sensor detection temperature are one high and one low, and when the temperature difference is not more than 10 degrees Celsius, controller judgement is visited
Relationship between the maximum temperature and set temperature of survey controls starting or stoping for the pumping device；The first sensor and
Second sensor detection temperature is one high and one low, and when the temperature difference is greater than 10 degrees Celsius, be determined as wherein a sensor occur therefore
Barrier carries out malfunction elimination.
As a further improvement of the present invention, the cold source is liquid reserve tank, is provided with cooling structure in the liquid reserve tank.
As a further improvement of the present invention, the cooling structure is spaced extremely along the liquid reserve tank length direction
Few two block baffles are will be separated at least three free convection cooling areas, the baffle and the liquid reserve tank inside the liquid reserve tank
Between there are cross liquid mouth, and it is two neighboring it is described cross liquid mouth shift to install, the inlet and liquid outlet of the liquid reserve tank respectively with
The neighbouring liquid mouth of crossing shifts to install.
As a further improvement of the present invention, the height of baffle plate be less than the liquid reserve tank height, the baffle upper end or
It was liquid mouth at the top of lower end and the liquid reserve tank or between bottom.
As a further improvement of the present invention, the baffle is provided with bevel structure close to the end for crossing liquid mouth.
As a further improvement of the present invention, the bevel structure is located at the downstream that the baffle flows naturally towards refrigerant
The side in direction.
As a further improvement of the present invention, liquid reserve tank is made of the material of good heat conductivity.By liquid reserve tank to
The convection current conduction of refrigerant in external radiation heat and liquid reserve tank cools down to refrigerant.
As a further improvement of the present invention, the cooling structure is condenser pipe.
As a further improvement of the present invention, the refrigerant is the cooling liquid that water or endothermic effect are better than water.
Second aspect of the present invention is designed to provide a kind of photovoltaic module, to solve photovoltaic group existing in the prior art
The excessively high technical problem of part temperature.
To achieve the above object, the present invention provides following technical schemes:
A kind of photovoltaic module provided by the invention, including backboard, and be arranged in the backboard such as first party of the present invention
Cooling device described in face.
The photovoltaic module further includes the toughened glass layer for being sequentially laminated setting, the first EVA (ethene-vinyl acetate copolymerization
Object) layer and cell piece, the backboard is located on rear side of the cell piece, and also lamination setting between the backboard and the cell piece
There is the second EVA layer.EVA refers to " ethylene-vinyl acetate copolymer " and its manufactured in chemistry and organic chemical industry field, EVA
Rubber plastic foam material, product have good flexibility, impact resistant strength, resisting environmental stress and cracking in wider temperature range
Property and good optical property, low temperature resistant and nontoxic characteristic.In the encapsulating material of solar cell, EVA is most important material
Material, EVA adhesive film is a kind of heat cured membranaceous hot melt adhesive, not tacky under room temperature, but is heated to required temperature, through certain item
Melting adhered and crosslinking curing just occurs for part hot pressing.
As a further improvement of the present invention, the photovoltaic module further includes up-conversion layer.
As a further improvement of the present invention, the toughened glass layer using ordinary glass, tunica albuginea tempered glass, from
One of cleaning tempered glass is made.
As a further improvement of the present invention, first EVA layer is made of transparent EVA or transmission increasing EVA.
As a further improvement of the present invention, the cell piece is monocrystalline type or polymorphic.
As a further improvement of the present invention, second EVA layer is made of transparent EVA or white EVA.
As a further improvement of the present invention, the backboard is made of easily molded TPT or glass-reinforced plastic material.
Third aspect present invention is designed to provide a kind of photovoltaic generating system, to solve light existing in the prior art
Lie prostrate the excessively high technical problem of component temperature.
To achieve the above object, the present invention provides following technical schemes:
A kind of photovoltaic generating system provided by the invention, including photovoltaic module as described in respect of the second aspect of the invention and is used for
The bracket of the photovoltaic module is supported, the photovoltaic module is obliquely installed on the bracket.
As a further improvement of the present invention, the bracket include four support columns, two crossbeams and four card slots, every
The height of the support column is adjustable, and two crossbeams are connect at the top of wherein two support columns respectively, four cards
Slot, which is respectively fixedly connected with, to be formed between the both ends of two crossbeams, four card slots for limiting the photovoltaic module
Limiting section.
As a further improvement of the present invention, the height and angle of the bracket are adjustable.
As a further improvement of the present invention, the bracket is the mounting bracket of manually adjustable elevation angle, or can chase after
The mounting bracket of track sun rotation automatic adjustment angle direction.Two kinds of brackets are product in the prior art.
Compared with prior art, the present invention has the following advantages:
The present invention acquires by being arranged water-cooled cooling pipeline in photovoltaic component back plate and analyzes the photovoltaic module back side
The data of temperature sensor control the open and close of water-cooled cooling pipeline, can more efficiently reduce the work temperature of photovoltaic module
Degree, is controlled in a certain range, and component output power is greatly improved, and increases generated energy, extends component service life, is reduced
Since hot spot effect causes the risk of fire.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the mounting structure schematic diagram of the cooling device of photovoltaic module of the present invention；
Fig. 2 is a kind of structural schematic diagram of embodiment of cooling device of the present invention；
Fig. 3 is the structural schematic diagram of cooling device another kind embodiment of the present invention；
Fig. 4 is a kind of internal structure chart of embodiment of liquid reserve tank of the present invention；
Fig. 5 is the cross-sectional view of photovoltaic module of the present invention；
Fig. 6 is the structural schematic diagram that photovoltaic module is rack-mount in photovoltaic generating system of the present invention.
1, photovoltaic module in figure；11, toughened glass layer；12, the first EVA layer；13, cell piece；14, the second EVA layer；15,
Backboard；16, refrigerant pipeline；161, the first main line；162, the first bye-pass；163, main cooling pipeline；164, auxiliary temperature-reducing pipe
Road；165, the second main line；166, the second bye-pass；2, cold source；21, inlet；22, liquid outlet；23, baffle；24, liquid is crossed
Mouthful；25, warm water zone；26, transition region；27, cold water area；3, controller；31, crossbeam；32, card slot；33, bolt and nut；4, temperature
Sensor；5, pumping device；6, input duct；7, liquid outlet pipe；8, bracket；100, main hot zone；200, secondary hot zone.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
First aspect present invention provides a kind of cooling device of photovoltaic module, including setting is carried on the back on rear side of photovoltaic module 1
The cooling channel being connected in plate 15 with cold source 2, cooling channel are covered with 15 whole region of backboard by following in cooling channel
Ring refrigerant carries out heat exchange cooling to the entire hot zone of photovoltaic module 1.In the present invention, refrigerant is water, and cold source 2 is liquid reserve tank,
Cooling structure is provided in liquid reserve tank.
As optional embodiment, the channel that cools down includes the refrigerant pipeline 16 that disk is located in backboard 15, refrigerant pipeline 16
Both ends pass through input duct 6 respectively and liquid outlet pipe 7 is connected to cold source 2, and further, 16 diameter of refrigerant pipeline is that backboard 15 is thick
The 1/3 of degree, and 16 central axis of refrigerant pipeline is located at the center of 15 thickness direction of backboard, refrigerant pipeline 16 is with 15 thickness side of backboard
It is center symmetrical structure to center.For the intensity for guaranteeing backboard 15 and total, 15 thickness of backboard is slightly thicker than general thickness, can
It is adjusted according to the actual situation.
Specifically, the embodiment in two kinds of water-cooled cooling channels is set forth in Fig. 2, Fig. 3.Fig. 2 is general common type water cooling
Cool down channel, it is ensured that water flow passes through 1 backboard of photovoltaic module, 15 all areas, cools down to entire photovoltaic module 1.Fig. 3 is
The water-cooled cooling designed for the back side equipped with the photovoltaic module 1 of the controllers such as intelligent wiring box, power optimization device, Miniature inverter
Channel.Region shown in upper square box is the controller installation region hot zone Ji Zhu 100 in Fig. 3.Since controller works
When can discharge amount of heat, which will steeply rise, even more than 80 DEG C of the safe working temperature of photovoltaic module 1, because
Water flow preferentially flows through the region in this design, and water temperature is minimum at this time, can take away most of heat that controller work generates, have
Effect cools down to the region.Except hot zone 100 is time hot zone 200 with exterior domain.Fig. 2, water-cooled cooling channel shown in Fig. 3
Size for convenience of the effect structure figure drawn out of observation, be not equal proportion effect picture.
For the embodiment in Fig. 2, refrigerant pipeline 16 includes the first main line 161 and at least two first bye-passes
162,161 one end of the first main line is connect with input duct 6, all 162 both ends of the first bye-pass respectively with the first main line
161 other ends and liquid outlet pipe 7 are connected in parallel.Refrigerant i.e. in cold source 2 enters in the first main line 161 through input duct 6,
Then it flows into all first bye-passes 162 in parallel with the first main line 161, after all the first bye-pass 162 heat absorptions
It is expelled back into cold source 2 from liquid outlet pipe 7.All first bye-passes 162 are S-shaped, rectangular-ambulatory-plane, circular concentric or other modes cloth
The whole region of full backboard 15.
For the embodiment in Fig. 3, refrigerant pipeline 16 includes main cooling pipeline 163 interconnected and auxiliary temperature-reducing pipe
Road 164, main cooling pipeline 163 are connect with input duct 6, and auxiliary temperature-reducing pipeline 164 is connect with liquid outlet pipe 7, main cooling pipeline
163 disks, which are located on backboard 15, corresponds to main 100 position of hot zone of photovoltaic module 1, and it is right on backboard 15 that 164 disk of auxiliary temperature-reducing pipeline is located at
Answer 1 hot zone of photovoltaic module, 200 position.Refrigerant flows through input duct 6 after the extraction of pumping device 5 from cold source 2 in the design
It enters in main cooling pipeline 163, main 163 disk of cooling pipeline is located in main hot zone 100, so that the low refrigerant of temperature preferentially flows
The region is crossed, the refrigerant of low temperature can take away most of heat that controller work generates at this time, effectively cool down to the region.
Specifically, main cooling pipeline 163 and auxiliary temperature-reducing pipeline 164 include the second main line 165 and at least two pieces the
Two bye-passes 166, all 166 one end of the second bye-pass are connected in parallel with 165 one end of the second main line.
Such as Fig. 2 and as shown in figure 3, the first bye-pass 162 and/or the second bye-pass 166 S-shaped, rectangular-ambulatory-plane, circular concentric
It is arranged in backboard 15.
As shown in Figure 1, further including the pumping device 5 being arranged in input duct 6.As optional embodiment, drawing liquid
Device 5 is pump, and the flow pumped is adjustable.It further include temperature sensor 4 and controller 3, temperature sensor 4 is arranged in backboard 15
On, controller 3 is electrically connected with temperature sensor 4 and pumping device 5.
As optional embodiment, the quantity of temperature sensor 4 is two, respectively first sensor and the second sensing
Device.First sensor and second sensor are fixed on 15 surface of backboard in a manner of pasting.When specifically used, first sensor and
When second sensor detection temperature is above set temperature, controller 3 controls pumping device 5 and is actuated for cooling heat exchange；First
When sensor and second sensor detection temperature are below set temperature, it is out of service that controller 3 controls pumping device 5；First
Sensor and second sensor detection temperature it is one high and one low, and the temperature difference be not more than 10 degrees Celsius when, controller 3 judgement detection most
Relationship between high-temperature and set temperature controls starting or stoping for pumping device 5；First sensor and second sensor are visited
Testing temperature is one high and one low, and when the temperature difference is greater than 10 degrees Celsius, is determined as a wherein sensor failure, carries out malfunction elimination.
As shown in figure 4, Fig. 4 is a kind of internal structure chart of embodiment of liquid reserve tank, it is respectively equipped with inlet 21 and liquid outlet
22；Cooling structure is along spaced at least two block baffles 23 of liquid reserve tank length direction will be separated at least inside liquid reserve tank
Three free convection cooling areas, the present invention in 23 quantity of baffle be two pieces, two block baffles 23 will be separated into three inside liquid reserve tank
Cooling area, respectively warm water zone 25, transition region 26 and cold water area 27, there are crossing liquid mouth 24 between 23 liquid reserve tank of baffle, and it is adjacent
It crosses liquid mouth 24 for two to shift to install, the inlet 21 and liquid outlet 22 of liquid reserve tank are shifted to install with neighbouring liquid mouth 24 of crossing respectively.
Specifically, 23 height of baffle is less than at the top of liquid reserve tank height, 23 upper end of baffle or lower end and liquid reserve tank or was liquid between bottom
Mouth 24.Baffle 23 has skewed bevel structure close to the end design for crossing liquid mouth 24, passes through convenient for water flow.The bevel structure position
In the downstream direction side that baffle 23 flows naturally towards refrigerant.
According to the principle that cold water density specific heat water density is big, in liquid reserve tank cold water under, hot water is in upper, 25 left side of warm water zone
Have inlet 21, above water temperature it is higher, below water temperature it is lower, from below baffle 23 cross liquid mouth 24 enter transition region 26, transition
The water in area 26 enters cold water area 27 from the liquid mouth 24 of crossing above baffle 23, and the water below cold water area 27 is dropped by multiple heat transfer
Temperature, heat radiation cooling are extracted away with lower temperature and carry out water-cooled cooling to photovoltaic module 1.
In the present embodiment, the refrigerant in liquid reserve tank be by natural radiation (i.e. by liquid storage tank wall radiate outward) and according to
The side of cooling of secondary flowing conduction cooling (flowing to the flow process that transition region 26 flows to cold water area 27 again from warm water zone 25)
What formula was realized；So in order to improve the cooling effect of natural radiation, liquid reserve tank is made of the material of good heat conductivity.Pass through storage
The convection current conduction of refrigerant in the outside radiations heat energy and liquid reserve tank of liquid case cools down to refrigerant.Such structure is only
Basic cooling method is only applicable to the lower area of long-term temperature (such as annual temperature is lower than 25 DEG C).It is higher for summer temp
Area (such as day temperature is higher than 25 DEG C) or extreme climate are regional (such as desert, equator), and another kind embodiment party may be selected
Formula changes the baffle 23 in liquid reserve tank into condenser pipe, reinforces cooling effect, the specific structure design of condenser pipe and the choosing of refrigerant
Select to be selected according to the actual situation.
Specifically, refrigerant is the cooling liquid that water or endothermic effect are better than water, it can select according to the actual situation, in the present invention
Select water as refrigerant.
Specifically used method:
As shown in Figure 1, photovoltaic module 1 is mounted at a certain angle on bracket 8；Water cooling drop up and down is provided on backboard 15
Warm channel is imported and exported, and is connected separately with water inlet line 6 and outlet conduit 7 in the inlet and outlet.Wherein, water inlet line 6 and water pump phase
Even, water is extracted from liquid reserve tank by water pump, the water-cooled cooling in 1 backboard 15 of photovoltaic module is injected by water inlet line 6
In channel, 1 back side all areas of photovoltaic module are flowed through, absorb the heat that photovoltaic module 1 carries out photovoltaic effect generation, then from
Outlet conduit 7 flows into liquid reserve tank.1 back side of photovoltaic module is pasted with two panels temperature sensor 4, connect with controller 3, when two
When the temperature signal that piece temperature sensor 4 is transferred to controller 3 is all higher than a certain critical temperature value, letter is opened in the transmission of controller 3
Number feed pump, water pump are started to work, and water-cooled cooling is carried out；Pump capacity is adjustable, and the temperature detected according to temperature sensor 4 is high
It is low, determine pump capacity, temperature is higher, and flow is bigger；When two panels temperature sensor 4 is transferred to the temperature signal of controller 3 all
When lower than a certain critical temperature value, controller 3 transmits shutdown signal feed pump, and water pump stops working, and terminates water-cooled cooling.
As shown in figure 5, second aspect of the present invention provides a kind of photovoltaic module, the tempered glass including being sequentially laminated setting
The 11, first EVA layer 12 of layer, cell piece 13, the second EVA layer 14 and backboard 15, the cooling device that first aspect present invention provides are set
It sets in backboard 15.Photovoltaic module 1 further includes up-conversion layer.
Wherein, toughened glass layer 11 is one of ordinary glass, tunica albuginea tempered glass, self-cleaning toughened glass system
At.First EVA layer 12 is made of transparent EVA or transmission increasing EVA；Cell piece 13 is monocrystalline type or polymorphic；Either p-type, N
Type, more main grids, half, imbrication or one of two-sided；Second EVA layer 14 is made of transparent EVA or white EVA；Backboard 15
It is made of easily molded TPT or glass-reinforced plastic material.
Third aspect present invention provides a kind of photovoltaic generating system, the photovoltaic module provided including second aspect of the present invention
1 and it is used to support the bracket 8 of photovoltaic module 1, photovoltaic module 1 is inclined on bracket 8；Fig. 6 is a kind of peace of photovoltaic module
The example of dress mode, bracket 8 include four support columns, two crossbeams 31 and four card slots 32, and the height of every support column is adjustable,
Two crossbeams 31 are connect at the top of wherein two support columns respectively, and four card slots 32 are fixedly connected on by bolt and nut 33 respectively
The both ends of two crossbeams 31 form the limiting section for limiting photovoltaic module 1 between four card slots 32.It can be by adjusting support column
Relative altitude change photovoltaic module 1 setting angle.
Since angle difference will lead to the difference of generated energy between photovoltaic module 1 and the sun, in order to increase photovoltaic group
The generated energy of part 1, bracket 8 select height and the adjustable type of angle, such as mounting bracket of manually adjustable elevation angle,
Or it can be using the mounting bracket of traceable sun rotation automatic adjustment angle direction；Two kinds of brackets are in the prior art
Product.
Specifically, the cooling device in the photovoltaic module and photovoltaic generating system of second aspect of the present invention and the third aspect is equal
The cooling device of first aspect present invention can be used, other components can be all made of structure in the prior art and connection side
Formula, details are not described herein.
In the present invention, the type selecting of the component part of five lamination settings of photovoltaic module 1 can be selected arbitrarily according to demand
Suitable material and structure also can according to need and increase some other parts, transition material layer as above etc..Water in backboard 15
Cold cooling channel can do other designs as needed, need to only flow through 1 back side all areas of photovoltaic module.Liquid reserve tank can carry out
Other designs can in liquid reserve tank if 1 operating area of photovoltaic module is regional for superhigh temperature, such as desert area or torrid areas
Condenser pipe is selected, the more excellent material of heating conduction can be selected in liquid storage box material, and it is more preferable that endothermic effect can be selected in aqueous cooling liquid
Other refrigerants etc..1 mounting means of photovoltaic module can also choose other modes.
Here for first choice it should be noted that " inside " is directed towards the direction in accommodating space center, " outside " is far from accommodating
The direction in space center.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
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 invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
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 included at least one embodiment or example of the invention.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.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (15)
1. a kind of cooling device of photovoltaic module, it is characterised in that: including setting on rear side of the photovoltaic module (1) in backboard (15) with
The cooling channel that cold source (2) is connected, the cooling channel are covered with the backboard (15) whole region with logical by the cooling
Circulating refrigerant in road carries out heat exchange cooling to the entire hot zone of photovoltaic module (1).
2. cooling device according to claim 1, it is characterised in that: the cooling channel includes that disk is located at the backboard
(15) refrigerant pipeline (16) in, refrigerant pipeline (16) both ends pass through input duct (6) and liquid outlet pipe (7) and institute respectively
State cold source (2) connection.
3. cooling device according to claim 2, it is characterised in that: refrigerant pipeline (16) diameter is the backboard
(15) the 1/3 of thickness, and the refrigerant pipeline (16) central axis is located at the center of the backboard (15) thickness direction.
4. cooling device according to claim 2, it is characterised in that: the refrigerant pipeline (16) includes the first main line
(161) it is connect at least two first bye-passes (162), described first main line (161) one end with the input duct (6),
All the first bye-pass (162) both ends respectively with the first main line (161) other end and the liquid outlet pipe (7)
It is connected in parallel.
5. cooling device according to claim 2, it is characterised in that: the refrigerant pipeline (16) includes master interconnected
Cooling pipeline (163) and auxiliary temperature-reducing pipeline (164), the main cooling pipeline (163) connect with the input duct (6), institute
It states auxiliary temperature-reducing pipeline (164) to connect with the liquid outlet pipe (7), main cooling pipeline (163) disk is located on backboard (15)
Corresponding photovoltaic module (1) main hot zone (100) position, auxiliary temperature-reducing pipeline (164) disk, which is located on backboard (15), corresponds to light
Lie prostrate component (1) secondary hot zone (200) position.
6. cooling device according to claim 5, it is characterised in that: the main cooling pipeline (163) and auxiliary drop
Warm pipeline (164) includes the second main line (165) and at least two second bye-passes (166), all second branch pipes
Road (166) one end is connected in parallel with described second main line (165) one end.
7. according to any cooling device of claim 2-6, it is characterised in that: further include being arranged in the input duct
(6) pumping device (5) on.
8. cooling device according to claim 7, it is characterised in that: it further include temperature sensor (4) and controller (3),
The temperature sensor (4) is arranged on the backboard (15), the controller (3) and the temperature sensor (4) and described
Pumping device (5) is electrically connected.
9. cooling device according to claim 8, it is characterised in that: the quantity of the temperature sensor (4) is two, point
It Wei not first sensor and second sensor.
10. cooling device according to claim 1, it is characterised in that: the cold source (2) is liquid reserve tank, the liquid reserve tank
Inside it is provided with cooling structure.
11. cooling device according to claim 10, it is characterised in that: the cooling structure is along the liquid reserve tank length
Spaced at least two block baffles (23) in direction at least three free convection cooling areas will be separated into inside the liquid reserve tank,
There are mistakes liquid mouth (24) between the baffle (23) and the liquid reserve tank, and two neighboring cross liquid mouth (24) shift to install,
The inlet (21) and liquid outlet (22) of the liquid reserve tank are shifted to install with neighbouring cross liquid mouth (24) respectively.
12. cooling device according to claim 11, it is characterised in that: the baffle (23) crosses liquid mouth (24) close to described
End be provided with bevel structure.
13. cooling device according to claim 10, it is characterised in that: the cooling structure is condenser pipe.
14. a kind of photovoltaic module, it is characterised in that: including backboard (15) and be arranged in the backboard (15) such as claim
Any cooling device of 1-13.
15. a kind of photovoltaic generating system, it is characterised in that: including photovoltaic module as claimed in claim 14 (1) and for branch
The bracket (8) of the photovoltaic module (1) is supportted, the photovoltaic module (1) is inclined on the bracket (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177532.7A CN109217812A (en) | 2018-10-10 | 2018-10-10 | Cooling device of photovoltaic module, photovoltaic module and photovoltaic power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177532.7A CN109217812A (en) | 2018-10-10 | 2018-10-10 | Cooling device of photovoltaic module, photovoltaic module and photovoltaic power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN109217812A true CN109217812A (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811177532.7A Pending CN109217812A (en) | 2018-10-10 | 2018-10-10 | Cooling device of photovoltaic module, photovoltaic module and photovoltaic power generation system |
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| CN111313823A (en) * | 2020-03-26 | 2020-06-19 | 浙江知瑞科技集团有限公司 | Solar power generation temperature adjusting device |
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