CN103701408B - Encapsulating type photovoltaic junction box - Google Patents
Encapsulating type photovoltaic junction box Download PDFInfo
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- CN103701408B CN103701408B CN201310576639.XA CN201310576639A CN103701408B CN 103701408 B CN103701408 B CN 103701408B CN 201310576639 A CN201310576639 A CN 201310576639A CN 103701408 B CN103701408 B CN 103701408B
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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 present invention discloses a kind of encapsulating type photovoltaic junction box, comprise the base and upper cover that mutually cover, in base, base plate is installed, base plate is provided with terminal, terminal is provided with strap clamp, diode, photovoltaic cable is connected with terminal through the Line pressing buckle be arranged in base, and filling above base plate in base has fluid sealant.Most hot spot of the present invention direct contact solar backboard, base bottom offers convection cavity, base end face and base plate height of formation poor, above covered ventilation hole, good heat dissipation effect; Metalwork has been covered with box body inner chamber, and the area of dissipation after encapsulating is large, uniform heat distribution; Base periphery is bent to form coaming plate, and forms cavity by coaming plate, accelerates again heat radiation while reducing encapsulating amount; Terminal edge adds flange, plays the effect increasing area of dissipation; Convergent belt welds and clamps dual fixing, and terminal, base plate are firmly connected with base three, and reliability is high; There is boss as fulcrum, can conveniently prize strap clamp and realize installing/dismounting.
Description
Technical field
The present invention relates to field of photovoltaic power generation, particularly relate to a kind of encapsulating type photovoltaic junction box be applied in photovoltaic generating system.
Background technology
In the electric connection technology of photovoltaic generating system, employing photovoltaic junction box realizes the electrical connection between photovoltaic module and inverter usually.Due to the application scenario normally outdoor environment of photovoltaic junction box, therefore prevent the media such as rainwater from infiltrating and affecting the Consideration that inner electrical connection is an outbalance in photovoltaic junction box design.Encapsulating type photovoltaic junction box realizes water-tight by encapsulating, is current preferably solution.Current encapsulating type photovoltaic junction box is identical with common terminal box, is all arrange installation cavity between box body, is arranged in installation cavity by diode.Because diode operationally can produce higher temperature, along with the continuous rising of diode temperature, the resistance in diode will constantly increase, and cause diode to produce more heat, thus waste more electric power resource and enter vicious circle.In order to ensure that photovoltaic junction box has better thermal diffusivity, the general method adopting installation cavity volume in increase photovoltaic junction box, thus add thickness and the volume of whole photovoltaic junction box, the more important thing is, adopt and be difficult in this way reach good radiating effect.Therefore, how while being implemented to sealing effectiveness, making encapsulating type photovoltaic junction box have excellent heat dissipation ventilation effect, become the focus of industry research.
Summary of the invention
The object of the present invention is to provide a kind of encapsulating type photovoltaic junction box with high heat dispersion and sealing property; by integral heat sink characteristics design and mounting structure design; realize encapsulating type photovoltaic junction box cross-ventilation, flash heat transfer; reach internal thermal equilibrium and protect diode, making product have higher reliability.
Technical scheme of the present invention is as follows:
A kind of encapsulating type photovoltaic junction box, comprises the base and upper cover that mutually cover, is provided with base plate in described base, described base plate is provided with multiple terminal, each terminal is separately installed with strap clamp, be provided with diode between each terminal; Photovoltaic cable is connected with terminal through the Line pressing buckle be arranged in base; Fill above base plate in described base and have fluid sealant;
Described terminal, base plate are distributed in base; Described terminal, base plate adopt heat proof material, and described base adopts nonrefractory material; When described base plate is assemblied in after in base, the bottom surface of base plate and the bottom surface of base are on different horizontal planes, and the base end face below described base plate has convection cavity; On described base plate, the bottom surface of non-mounting terminal is provided with through hole, and described via bottoms is sealed by pasting boards;
Described base periphery is provided with and bends and perpendicular to the coaming plate of base end face along base plate configuration; Described base have the multiple cavitys surrounded by coaming plate; The edge of described terminal has the flange perpendicular to terminal bottom surface, and the described flange of terminal contacts with the coaming plate of base; Described upper cover top surface has projection upwards, and the end face of described upper cover and side have the multiple ventilation holes corresponding with the empty cavity position on base.
Its further technical scheme is: the pin of described diode is welded on two adjacent terminals, and described terminal is installed on base plate, and described base plate is installed on base.
Its further technical scheme is: the one side of described base plate is the installed surface of terminal, it comprises multiple installation unit side by side, and each installation unit can be installed for a terminal; The both sides of each installation unit have the fixture block pair be made up of two fixture blocks respectively, form gap between two fixture blocks that each fixture block is right; Described terminal has clamp, and the two ends of described clamp are inserted in the right gap of correspondence position fixture block respectively; Is provided with draw-in groove with fixture block to corresponding position in described base, the size of described draw-in groove is less than fixture block to size during relaxation state, inwardly shrinks among the draw-in groove that right two fixture blocks of described fixture block are connected to correspondence position, clamps the clamp on described terminal.
Its further technical scheme is: the edge of described base is provided with boss, has the gap Gong prizing between described boss and strap clamp.
Its further technical scheme is: described each terminal has for confluxing of passing of convergent belt with holes, and for the solder bath of the welding that confluxes.
Advantageous Effects of the present invention is:
The present invention is on hot speciality is optimized, make most hot spot direct contact solar backboard, the convection cavity of hollow out is offered at the base bottom at most hot spot place, and make base end face and base plate directly form step difference in height, ventilation hole simultaneously by above covering processing makes heat rapid divergence, plays the effect of radiating and cooling; By metalwork has been covered with box body inner chamber, make the area of dissipation after encapsulating larger, the heat in box body has been more evenly distributed; By base periphery is bent to form coaming plate, and form multiple cavity by coaming plate, while reducing encapsulating amount, make again heat radiation accelerate; By increasing the flange of terminal edge, after playing encapsulating, increase the effect of area of dissipation; By the design of upper lid surface evagination, increase effectively photovoltaic junction box inner space, be also conducive to the raising of heat dispersion.The present invention is on mounting structure is optimized, photovoltaic junction box for encapsulating type devises the installation site of convergent belt and the fixed structure of welding and the dual guarantee of clamping, devise the syndeton that terminal, base plate and base three are solid and reliable, and devise boss and prize strap clamp as fulcrum realize installing/dismounting to facilitate.
Advantage of the present invention provides in the description of embodiment part below, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is exploded view of the present invention.
Fig. 2 is superstructure figure of the present invention.
Fig. 3 is terminal structure figure of the present invention.
Fig. 4 is base arrangement figure of the present invention.
Fig. 5 is understructure figure of the present invention.
Fig. 6 is cut-away view of the present invention.
Fig. 7 is structure figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As shown in Figure 1, the present invention includes the base 6 and upper cover 1 that mutually cover, base plate 5 is installed in base 6, base plate 5 is provided with difform multiple terminal 4, multiple strap clamp 2 and multiple diode 3.See Fig. 6, mounting means is install diode 3 between terminals of adjacent 4, and each terminal 4 installs strap clamp 2 respectively.As shown in Figure 1, two Line pressing buckles 7 are arranged in base 6, and two strands of photovoltaic cables 8 are each passed through Line pressing buckle 7 and weld with terminal 4.
As shown in Figure 3, each terminal 4 has the 4-1 with holes that confluxes passed for convergent belt, and for the solder bath 4-3 of the welding that confluxes.When convergent belt (not shown) is installed, wear above terminal 4, and be welded on the solder bath 4-3 position of terminal 4 from the below of the 4-1 with holes that confluxes of terminal 4, convergent belt is clamped fixing by strap clamp 2 simultaneously, dual Reliability Assurance.
As shown in Figure 6, two pins of diode 3 are welded on two adjacent terminals 4, and terminal 4 is installed on base plate 5, and base plate 5 is installed to again on base 6.
Here the connected mode of a kind of terminal 4, base plate 5, base 6 is provided.As shown in Figure 4, the one side of base plate 5 is the installed surface of terminal 4, it comprises multiple installation unit side by side, and each installation unit can be installed for a terminal 4.The both sides of each installation unit have the fixture block pair be made up of two fixture block 5-1 respectively, form gap between two fixture block 5-1 that each fixture block is right.As shown in Figure 3, terminal 4 has clamp 4-2, during installation, the two ends of clamp 4-2 are inserted in the right gap of correspondence position fixture block respectively.As shown in Figure 5, be provided with draw-in groove 6-4 with fixture block to corresponding position in base 6, when not installing, the size of draw-in groove 6-4 is less than fixture block to size during relaxation state; During installation, draw-in groove 6-4 and fixture block 5-1 interferes mutually, inwardly shrinks among the draw-in groove 6-4 that right two the fixture block 5-1 of fixture block are connected to correspondence position, fixes from the clamp 4-2 both sides clamping terminal 4.
Again as shown in Figure 5, the edge of base 6 is provided with boss 6-5, after installation as shown in Figure 6, has the gap Gong prizing between boss 6-5 and strap clamp 2.By boss 6-5 as fulcrum, can conveniently prize strap clamp 2.
Because the present invention is encapsulating type, in the space therefore in base 6 above base plate 5, be all perfused with fluid sealant.See Fig. 7, on base plate 5, the bottom surface of non-mounting terminal 4 is provided with through hole 5-2, and with the sealing of pasting boards (not shown) bottom through hole 5-2, therefore fluid sealant can not flow in the space below through hole 5-2.
As shown in Figure 7, when base plate 5 is assemblied in after in base 6, bottom surface and the bottom surface of base 6 of base plate 5 are on different horizontal planes, and base 6 bottom surface below base plate 5 has convection cavity 6-1.Wherein, terminal 4, base plate 5 adopt heat proof material, such as metal; Base 6 adopts nonrefractory material.Such structure, it is poor with base plate 5 height of formation to make bottom the base 6 of photovoltaic junction box, the most serious terminal 4 of box body internal heat generation, base plate 5 position can not direct contact solar backboards, the heat avoided on terminal 4, base plate 5 is transmitted on base 6 fast, thus the solar panel of impact below.
Again as shown in Figure 6, metalwork terminal 4, base plate 5 are distributed in base 6, cover more than at least 90% base area of base 6 inner chamber, have substantially been covered with box body inner chamber, and the area of dissipation after such encapsulating is larger, and the heat in box body is more evenly distributed.
As shown in Figure 5, base 6 periphery is provided with the encirclement to fluid sealant when to bend along base plate 5 shape and to be used for encapsulating perpendicular to the coaming plate 6-2 of base 6 bottom surface, coaming plate 6-2.Base 6 also has the multiple cavity 6-3 formed after being connected by coaming plate 6-2, the position of cavity 6-3, without encapsulating, reduces encapsulating amount, has saved cost, and cavity 6-3 can make again heat radiation faster simultaneously, kills two birds with one stone.
Again as shown in Figure 4, the edge of terminal 4 has the flange 4-3 perpendicular to terminal 4 bottom surface, and during installation, the flange 4-3 of terminal 4 contacts with the coaming plate 6-2 of base 6, can increase the area of dissipation after encapsulating.
In addition, as shown in Figure 2, upper cover 1 end face has protruding 1-1 upwards, effectively increases tray interior space, is also conducive to the raising of heat dispersion; Meanwhile, the end face of upper cover 1 and side have the multiple ventilation hole 1-2s corresponding with the cavity 6-3 position on base 6, can form the cross-ventilation inside and outside box body, play the effect of radiating and cooling.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive without departing from the spirit and concept in the present invention or associate, all should think and be included within protection scope of the present invention.
Claims (4)
1. an encapsulating type photovoltaic junction box, comprise the base (6) and upper cover (1) that mutually cover, base plate (5) is installed in described base (6), described base plate (5) is provided with multiple terminal (4), each terminal (4) is separately installed with strap clamp (2), diode (3) is installed between each terminal (4); Photovoltaic cable (8) is connected with terminal (4) through the Line pressing buckle (7) be arranged in base (6); Fill in base plate (5) top in described base (6) and have fluid sealant;
It is characterized in that: described terminal (4), base plate (5) are distributed in base (6); Described terminal (4), base plate (5) adopt heat proof material, and described base (6) adopts nonrefractory material; When described base plate (5) is assemblied in after in base (6), the bottom surface of base plate (5) is on different horizontal planes from the bottom surface of base (6), and base (6) bottom surface of described base plate (5) below has convection cavity (6-1); On described base plate (5), the bottom surface of non-mounting terminal (4) is provided with through hole (5-2), and described through hole (5-2) bottom is sealed by pasting boards;
Described base (6) periphery is provided with along base plate (5) shape bending and perpendicular to the coaming plate (6-2) of base (6) bottom surface; Described base (6) have the multiple cavitys (6-3) surrounded by coaming plate (6-2); The edge of described terminal (4) has the flange (4-3) perpendicular to terminal (4) bottom surface, and the flange (4-3) of described terminal (4) contacts with the coaming plate (6-2) of base (6); Described upper cover (1) end face has projection (1-1) upwards, and the end face of described upper cover (1) and side have the multiple ventilation holes (1-2) corresponding with cavity (6-3) position on base (6);
The one side of described base plate (5) is the installed surface of terminal (4), it comprises multiple installation unit side by side, and each installation unit can be installed for a terminal (4); The both sides of each installation unit have the fixture block pair be made up of two fixture blocks (5-1) respectively, form gap between two fixture blocks (5-1) that each fixture block is right; Described terminal (4) has clamp (4-2), the two ends of described clamp (4-2) are inserted in the right gap of correspondence position fixture block respectively; With fixture block, draw-in groove (6-4) is provided with to corresponding position in described base (6), the size of described draw-in groove (6-4) is less than fixture block to size during relaxation state, inwardly shrink among the draw-in groove (6-4) that right two fixture blocks (5-1) of described fixture block are connected to correspondence position, clamp the clamp (4-2) on described terminal (4).
2. encapsulating type photovoltaic junction box according to claim 1, it is characterized in that: the pin of described diode (3) is welded on two adjacent terminals (4), described terminal (4) is installed on base plate (5), and described base plate (5) is installed on base (6).
3. encapsulating type photovoltaic junction box according to claim 1, is characterized in that: the edge of described base (6) is provided with boss (6-5), has the gap Gong prizing between described boss (6-5) and strap clamp (2).
4. encapsulating type photovoltaic junction box according to claim 1, is characterized in that: described each terminal (4) has conflux (4-1) with holes that pass for convergent belt, and for the solder bath (4-3) of the welding that confluxes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576639.XA CN103701408B (en) | 2013-11-16 | 2013-11-16 | Encapsulating type photovoltaic junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576639.XA CN103701408B (en) | 2013-11-16 | 2013-11-16 | Encapsulating type photovoltaic junction box |
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| Publication Number | Publication Date |
|---|---|
| CN103701408A CN103701408A (en) | 2014-04-02 |
| CN103701408B true CN103701408B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310576639.XA Active CN103701408B (en) | 2013-11-16 | 2013-11-16 | Encapsulating type photovoltaic junction box |
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| CN (1) | CN103701408B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024640A (en) * | 2014-04-27 | 2015-11-04 | 江苏通灵电器股份有限公司 | Clamping connection type photovoltaic module junction box |
| CN109962678A (en) * | 2017-12-22 | 2019-07-02 | 阿特斯阳光电力集团有限公司 | Photovoltaic junction box |
| CN109150094A (en) * | 2018-10-09 | 2019-01-04 | 安徽大恒能源科技有限公司 | Box in a kind of commercial style photovoltaic plant data set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110726A (en) * | 2010-11-05 | 2011-06-29 | 苏州快可光伏电子股份有限公司 | Sealed type photovoltaic junction box with rapid heat dissipation |
| CN202616266U (en) * | 2012-06-04 | 2012-12-19 | 宁波市创源光伏科技有限公司 | Novel solar photovoltaic connecting box |
| CN102856409A (en) * | 2012-09-12 | 2013-01-02 | 常熟市冠日新材料有限公司 | Connecting box for solar photovoltaic module |
| CN202695485U (en) * | 2012-05-30 | 2013-01-23 | 莱尼电气线缆（常州）有限公司 | Solar energy junction box |
| KR20130019730A (en) * | 2011-08-17 | 2013-02-27 | 주식회사엘디티 | Junction box for photovoltaic module |
| CN202940258U (en) * | 2012-12-05 | 2013-05-15 | 江西晶科光伏材料有限公司 | Photovoltaic junction box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203590147U (en) * | 2013-11-16 | 2014-05-07 | 浙江鑫辉光伏科技有限公司 | Glue pouring photovoltaic junction box |
-
2013
- 2013-11-16 CN CN201310576639.XA patent/CN103701408B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110726A (en) * | 2010-11-05 | 2011-06-29 | 苏州快可光伏电子股份有限公司 | Sealed type photovoltaic junction box with rapid heat dissipation |
| KR20130019730A (en) * | 2011-08-17 | 2013-02-27 | 주식회사엘디티 | Junction box for photovoltaic module |
| CN202695485U (en) * | 2012-05-30 | 2013-01-23 | 莱尼电气线缆（常州）有限公司 | Solar energy junction box |
| CN202616266U (en) * | 2012-06-04 | 2012-12-19 | 宁波市创源光伏科技有限公司 | Novel solar photovoltaic connecting box |
| CN102856409A (en) * | 2012-09-12 | 2013-01-02 | 常熟市冠日新材料有限公司 | Connecting box for solar photovoltaic module |
| CN202940258U (en) * | 2012-12-05 | 2013-05-15 | 江西晶科光伏材料有限公司 | Photovoltaic junction box |
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| CN103701408A (en) | 2014-04-02 |
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