CN208874535U - Thermal energy convection heat emission type photovoltaic module - Google Patents
Thermal energy convection heat emission type photovoltaic module Download PDFInfo
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- CN208874535U CN208874535U CN201821766789.1U CN201821766789U CN208874535U CN 208874535 U CN208874535 U CN 208874535U CN 201821766789 U CN201821766789 U CN 201821766789U CN 208874535 U CN208874535 U CN 208874535U
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- photovoltaic module
- diode
- thermal energy
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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
Abstract
Thermal energy convection heat emission type photovoltaic module.It is related to photovoltaic energy technical field, more particularly to the improvement to photovoltaic module and the pass devices plan of establishment.Provide a kind of work corresponding with single battery plate in photovoltaic module, heat transfer can be formed between each other, and then make solar panel and itself be in reasonable working temperature section, and then extend whole service life, improve the thermal energy convection heat emission type photovoltaic module of discovery efficiency.Including at least two groups photovoltaic cell group interconnected, a bypass connection box is correspondingly arranged at the back side of each photovoltaic cell group；Photovoltaic cell group described at least two groups and the respective bypass connection box are connected with each other, and constitute the circuit of the photovoltaic module.Photovoltaic cell group in the photovoltaic module is three groups, and the back side of each photovoltaic cell group is correspondingly arranged the bypass connection box.The utility model improves system effectiveness, while also acting as the effect for extending other device service lifes of photovoltaic module.
Description
Technical field
The utility model relates to photovoltaic energy technical fields, more particularly to photovoltaic module and the pass devices plan of establishment
It improves.
Background technique
Photovoltaic generating system generally by multiple photovoltaic modulies series connection become a group string, through inverter to power grid power supply (or
It is personal).It breaks down in order to prevent because individual elements damage or meet with shadow occlusion, causes entirely to organize string current limliting, generally all can
One or more diodes are reversely accessed in assembly junction box, provide current bypass for faulty components.But this way is being sent out
When raw failure, when bypass diode, can generate significant heat, and more serious accident can even be caused by influencing system reliability.
The photovoltaic junction box of the prior art generally corresponds to the construction of photovoltaic module monomer, includes the diode of three concatenations,
It is connected on photovoltaic module.When component is at least partially obscured, whole is blocked or other failures, corresponding diode can generate heat rapidly,
Problem component temperature can reduce rapidly simultaneously.
Photovoltaic junction box overheats in order to prevent, and traditional design is all using increase internal current conductor, and the measures such as encapsulating increase
The thermal interface of diode and shell, the shell by terminal box radiate outward.Since shell must have good electrical isolation
Performance is usually made of plastic or other material, and heat dissipation performance is very limited, bad so as to cause entire terminal box performance, reliably
Property is not high.Influence the reliability of light hair system.
For this purpose, teach that many relevant heat sink conceptions, such as " High-radiation performance photovoltaic junction box,
2012103426098 ", the technical solution of the case is: it include a box body, box body bottom, which is arranged side by side, multiphase electric conductor,
Connecting terminal, the bypass diode connected between each phase electric conductor is arranged in electric conductor end；The side of each bypass diode is arranged
There is an aluminium radiator；Vertical with the box bottom and electric conductor with its two sides of the pin lower section of bypass diode is connect；Bypass
The pin upper section and tube body of diode are bent to horizontality, stick on tube body lateral surface on the upper surface of aluminium radiator, and
Tube body is fixed by screw.The bypass diode that the case is bent by setting pin, not only makes tray interior structure more
Step up to gather, reduced overall dimensions, while tube body being enable to fit closely with aluminium radiator, strengthens dissipating for bypass diode
Heat ensure that the heat-sinking capability of entire terminal box, improve operational reliability.
For another example " photovoltaic junction box, 2018102500931 ", which includes box body, radiator portion and interconnecting piece
Part, box body are provided with heat-dissipating storehouse, conductive storehouse and photovoltaic welding chamber, are sealed off between heat-dissipating storehouse and conductive storehouse by sealing element,
Heat-dissipating storehouse is exposed in air；Radiator portion is mounted on heat-dissipating storehouse；Connecting component includes diode and electric conductor, diode with
Radiator portion contact, so that the radiator portion is to diode radiating, electric conductor has main coupling part and convergent belt interconnecting piece
Point, the main coupling part of diode and electric conductor is placed in conductive storehouse, and convergent belt coupling part is protruded into photovoltaic welding chamber.The case
The radiating efficiency that can be improved terminal box keeps the output power of component, guarantees the reliability of terminal box diode.
But the prior art is had in common that: one, integral bypass circuit (the i.e. wiring to be formed is constructed according to photovoltaic module
Box includes three diode/chips), wherein one occurs generating heat that by all means other diode operation performances certainly will be influenced；Two, it is
" convection type heat dissipation " or " segmented heat dissipation ", i.e., the former increase convection effects using change to box body structure；The latter a, inside
Thermal energy is gone out outside box by thermal conductor conducts, b, forms convection current with air to radiate.
On the whole, all measures of the prior art taken for terminal box heat dissipation purpose, only solve to connect in isolation
Wire box ontology heat dissipation problem, and radiating efficiency is not high.Meanwhile photovoltaic module is not accounted for from by partial occlusion, whole
The problem of cooling meeting bring damages component rapidly under circumstance of occlusion and extreme weather, such as to protective layer, (temperature change is bent
Line is excessively steep, accelerates the aging of EVA adhesive film) influence.
Utility model content
The utility model is in view of the above problems, provide a kind of work corresponding with single battery plate in photovoltaic module, mutually
Between can form heat transfer, and then make solar panel and itself be in reasonable working temperature section, and then extend and whole use the longevity
Life improves the thermal energy convection heat emission type photovoltaic module of discovery efficiency.
The technical solution of the utility model includes: including at least two groups photovoltaic cell group interconnected, in each light
The back side of volt cell piece group is correspondingly arranged on a bypass connection box；
The bypass connection box includes box body, diode and heat conducting device, and the diode is fixed at the box
In vivo, the heat conducting device has towards the face A and the exposed face B outside the box body of the diode, the face A
Between the diode there is heat transfer to connect, the B face paste closes the back side of the photovoltaic cell group；
Photovoltaic cell group described at least two groups and the respective bypass connection box are connected with each other, and constitute the photovoltaic group
The circuit of part.
Photovoltaic cell group in the photovoltaic module is three groups, and the back side of each photovoltaic cell group is correspondingly arranged an institute
State bypass connection box.
The cutting plane of the photovoltaic module from top to bottom has glass surface layer, protective layer one, cell piece group layer, protective layer two
And backing layer；It is linked together by the frame.
The back side of cell piece close quarters in the cell piece group is arranged in the bypass connection box.
The diode is the diode chip for backlight unit of sheet, and the diode chip for backlight unit is welded on metal framework；In the box
It is equipped with the pedestal for disposing the metal framework in vivo, the placement hole of the pedestal is through hole, and the face A of the heat conducting device is simultaneous
Make the back cover of the through hole；
Be welded with the diode chip for backlight unit the metal framework be placed in pedestal through hole after, distance also serve as back cover dissipate
Backing 2-5mm, then encapsulate.
The diode is columnar axial diode, and the face A of the heat conducting device sets arc groove, two pole of axial direction
Pipe is placed in the arc groove.
The recurrent efficiency of photovoltaic module based on client feedback in actual use of the utility model and service life
Problem and conceived.Conventional electrical connectors in use, mainly realized by itself by heat dissipation.The utility model is first
It first proposes that each cell piece group in component is allowed to correspond with bypass diode module, using cell piece group as the " heat of diode
It is heavy "；When cell piece group is blocked, in the case where there is temperature steep drop, corresponding diode while steep temperature rise, at this point, two poles
In the thermal energy conduction of pipe to cell piece group, its temperature steep drop is avoided, therefore by the reality of client feedback, is frequently being hidden
Gear-exposure-is blocked ... in this case, and cell piece damaged condition is more, and main cause is existed as the EVA adhesive film of protective layer
Aging causes rapidly in this steep temperature excursion, the cyclic process dropped suddenly ....Secondly, to realize this improvement, the utility model
Single tube bypass connection box is proposed, can use sheet type diode, diode chip for backlight unit or tube axial can produce, relative to tradition
Its advantage of lower cost of terminal box, use cost are lower.Third, the utility model are most in fact using cell piece group as heat sink
A kind of efficient heat-removal modalities, directly utilize heat transfer, can be rapidly by the backboard of diode thermal energy conduction to component, by backboard
Come " heat absorption ", on the other hand the slow drop of the thermal energy one side user maintenance own temperature that photovoltaic component back plate is absorbed is conducive to two poles
Pipe heat dissipation rapidly.The utility model overcomes the inertial thinking to radiate outward in traditional technology, but inside " heat dissipation " taken.
The utility model changes terminal box base structure, heat-dissipating aluminium plate is arranged in base outer surface, internal diode is close to
Aluminium sheet, the heat that when diode continuousing flow generates can efficiently be transmitted to aluminium sheet.And the back of photovoltaic module is close in aluminium sheet outer surface
Plate forms a very big radiating surface, substantially reduces junction box temperature, improve system effectiveness, also act as simultaneously
Extend the effect of other device service lifes of photovoltaic module.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model,
Fig. 2 is A-A partial sectional view in Fig. 1,
Fig. 3 is the working principle diagram of the utility model；
Fig. 4 is the exploded perspective schematic diagram of bypass connection box embodiment one in the utility model,
Fig. 5 is the structural schematic diagram of bypass connection box embodiment one in the utility model,
Fig. 6 is the B-B cross-sectional view of Fig. 5,
Fig. 7 is the rearview of Fig. 5；
Fig. 8 is the structural schematic diagram of bypass connection box embodiment two in the utility model,
Fig. 9 is C-C cross-sectional view in Fig. 8.
1 is photovoltaic module in figure,
10 be frame, and 11 be photovoltaic cell group, and 111 be cell piece, and 112 be drainage strip,
12 be glass surface layer, and 13 be protective layer one, and 14 be protective layer two, and 15 be backing layer；
2 be bypass connection box, and 21 be box body, and 211 be box cover, and 22 be pedestal, and 221 be insulation-encapsulated area, and 222 be diode
Chip, 2221 be axial diode, and 23 be cooling fin.
Hollow arrow indicates the heat transfer direction between cell piece group and bypass connection box in Fig. 3.
Specific embodiment
As shown in figs 1-9, photovoltaic module 1 includes at least two groups photovoltaic cell group 11 interconnected to the utility model,
A bypass connection box 2 is correspondingly arranged at the back side of each photovoltaic cell group 11；Include in each photovoltaic cell group 11
Several cell pieces 111, drainage strip 112 connect cell piece in groups, and the profile construction of photovoltaic module 1 is as shown in Fig. 2, include frame
10, towards the glass surface layer 12 of the sun, protective layer 1, photovoltaic cell group 11, protective layer 2 14 and back are then successively set
Layer 15.To realize the utility model aim, protective layer 2 14 and backing layer 15 should take the material with certain thermal conductivity to make,
In view of having thermal conductivity while the selection of those skilled in the art can be belonged to as the material of fabric backplanes, protective layer, this case
In without repeating.
Bypass connection box 2 includes box body 21, diode and heat conducting device, and diode is fixed in box body 21, heat
Conduction device has towards the face A and the exposed face B outside box body of diode, between the face A and diode there is heat transfer to connect
It connects, B face paste closes the back side of photovoltaic cell group 11；
At least two groups photovoltaic cell group 11 and respective bypass connection box 2 are connected with each other, and constitute the electricity of photovoltaic module 1
Road.
11 groups of photovoltaic cell in photovoltaic module 1 are three groups, and the back side of each photovoltaic cell group 11 is correspondingly arranged one
Bypass connection box 2.
The back side of 11 close quarters of cell piece in cell piece group 11 is arranged in bypass connection box 2.This is mainly that heat is concentrated
Region, herein carry out thermal convection efficiency it is relatively high.
As the first embodiment (such as Fig. 4-7), diode is the diode chip for backlight unit 222 of sheet, diode chip for backlight unit 222
It is welded on metal framework；The pedestal 22 of placement metal framework is equipped in box body 2, the placement hole of pedestal 22 is through hole, heat
The face A of conduction device also serves as the back cover of through hole；Be welded with diode chip for backlight unit metal framework be placed in 2 through hole of pedestal after,
Distance also serves as the cooling fin 2-5mm of back cover, then encapsulates, and final insulation-encapsulated area 221 encapsulates chip and frame, contacts cooling fin
23, i.e. insulation (this mainly considers the insulation between chip, frame and cooling fin), and heat can be conducted to cooling fin 23.
Finally seal up box cover 211
Another embodiment is as Figure 8-9, and diode is columnar axial diode 2221, and heat conducting device is (equivalent
In cooling fin) the face A set arc groove, axial diode is placed in arc groove.
This structure that the utility model is taken, when a certain area of battery component is blocked or when failure, in terminal box
Heat, is taken to the assembly surface above terminal box by corresponding diode continuousing flow fever.That is, if it is component central area
Domain failure, terminal box heat are brought to component middle section.There is no any damage to system；But if not taking one-to-one
Zone configuration mode, but a block assembly uses a heat dissipation box, if the region of two sides is broken down, and heat is by band
To middle section, has to the middle section of normal work and centainly negatively affect.
Claims (6)
1. thermal energy convection heat emission type photovoltaic module, including at least two groups photovoltaic cell group interconnected, which is characterized in that
The back side of each photovoltaic cell group is correspondingly arranged on a bypass connection box；
The bypass connection box includes box body, diode and heat conducting device, and the diode is fixed in the box body,
The heat conducting device has towards the face A and the exposed face B outside the box body of the diode, the face A with it is described
There is heat transfer connection, the B face paste closes the back side of the photovoltaic cell group between diode；
Photovoltaic cell group described at least two groups and the respective bypass connection box are connected with each other, and constitute the photovoltaic module
Circuit.
2. thermal energy convection heat emission type photovoltaic module according to claim 1, which is characterized in that the light in the photovoltaic module
Lying prostrate cell piece group is three groups, and the back side of each photovoltaic cell group is correspondingly arranged the bypass connection box.
3. thermal energy convection heat emission type photovoltaic module according to claim 1, which is characterized in that the cutting of the photovoltaic module
Face from top to bottom has glass surface layer, protective layer one, cell piece group layer, protective layer two and backing layer；It is linked together by frame.
4. thermal energy convection heat emission type photovoltaic module according to claim 1, which is characterized in that the bypass connection box setting
The back side of cell piece close quarters in the cell piece group.
5. thermal energy convection heat emission type photovoltaic module according to claim 1, which is characterized in that the diode is sheet
Diode chip for backlight unit, the diode chip for backlight unit are welded on metal framework；It is equipped in the box body and disposes the metal framework
The placement hole of pedestal, the pedestal is through hole, and the face A of the heat conducting device also serves as the back cover of the through hole；
Be welded with the diode chip for backlight unit the metal framework be placed in pedestal through hole after, distance also serves as the cooling fin of back cover
2-5mm, then encapsulate.
6. thermal energy convection heat emission type photovoltaic module according to claim 1, which is characterized in that the diode is columnar
Axial diode, the face A of the heat conducting device set arc groove, and the axial diode is placed in the arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821766789.1U CN208874535U (en) | 2018-10-30 | 2018-10-30 | Thermal energy convection heat emission type photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821766789.1U CN208874535U (en) | 2018-10-30 | 2018-10-30 | Thermal energy convection heat emission type photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN208874535U true CN208874535U (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821766789.1U Active CN208874535U (en) | 2018-10-30 | 2018-10-30 | Thermal energy convection heat emission type photovoltaic module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194281A (en) * | 2018-10-30 | 2019-01-11 | 江苏通灵电器股份有限公司 | A kind of thermal energy convection heat emission type photovoltaic module |
-
2018
- 2018-10-30 CN CN201821766789.1U patent/CN208874535U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194281A (en) * | 2018-10-30 | 2019-01-11 | 江苏通灵电器股份有限公司 | A kind of thermal energy convection heat emission type photovoltaic module |
| CN109194281B (en) * | 2018-10-30 | 2023-12-19 | 江苏通灵电器股份有限公司 | Heat energy convection heat dissipation type photovoltaic module |
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