CN104135226A - Photovoltaic module junction box facilitating bus bar connection - Google Patents
Photovoltaic module junction box facilitating bus bar connection Download PDFInfo
- Publication number
- CN104135226A CN104135226A CN201410370450.XA CN201410370450A CN104135226A CN 104135226 A CN104135226 A CN 104135226A CN 201410370450 A CN201410370450 A CN 201410370450A CN 104135226 A CN104135226 A CN 104135226A
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- CN
- China
- Prior art keywords
- common bus
- terminal box
- bus bar
- splicing ear
- junction box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
The invention provides a photovoltaic module junction box facilitating bus bar connection. The photovoltaic module junction box comprises a junction box body and an electric connection wire. A photovoltaic module comprises a battery pack string and a common bus bar, wherein the battery pack string connects a plurality of battery pieces with bus bars, and the common bus bar connects the battery pack string with the junction box body. A plurality of bus bar connection terminals are arranged in the junction box body, holes parallel to the width direction of the common bus bar of the module are formed in the positions of the connection terminals, and the common bus bar penetrates out of the holes to be welded to bonding pads of the connection terminals. Due to the fact that the holes parallel to the width direction of the common bus bar is formed in the positions of the connection terminals of the junction box body, the common bus bar does not need to be bent and can directly penetrate through the holes to be welded to the bonding pads of the connection terminals; the connection terminals are arranged in a plane or L type, and different welding technologies are adopted, so that stress influences generated after welding are eliminated to the maximum degree, and the photovoltaic module junction box is simple in structural design, reliable in connection and long in service life.
Description
Technical field
The present invention relates to solar-photovoltaic technology field, particularly a kind of photovoltaic component terminal box of being convenient to busbar connection.
Background technology
Increasingly serious along with Global climate change and problem of environmental pollution, green regenerative energy sources industry last decade is developed rapidly.Solar energy is a kind of renewable resource, utilizes the solar cell technology that photovoltaic effect generates electricity to enjoy common people to pay close attention to.Solar cell is by the material that can produce photovoltaic effect, makes as materials such as silicon, GaAs, indium selenium coppers, light energy conversion can be become to electric energy.At present, combined the photovoltaic module forming by multi-disc solar cell and used for building various photovoltaic generating systems in a large number, or for build up energy saving and environment friendly building as constructure screen wall.
The electric energy that in actual use, need to use photovoltaic component terminal box that photovoltaic module is produced is drawn with outside load and is connected.Therefore, photovoltaic component terminal box is the critical component that photovoltaic module builds various electricity generation systems.As shown in Figure 1, for the electric energy of photovoltaic module 10 is drawn, need to gang up common bus 14 and wore to the assembly back side from assembly front using busbar connect battery pack that multiple cell pieces 12 form, be welded to connect with the splicing ear (copper sheet) in assembly junction box, Figure 1 shows that the cabling mode of common bus 14 in current photovoltaic module, Figure 2 shows that the structural representation of current terminal box and busbar splicing ear wherein, common bus 14 need the perforate 244 from terminal box body 20 in through being welded to connect (as shown in Figure 3 a) with the pad portion 242 of splicing ear 24 again, can find out from Fig. 1 and Fig. 2, because the perforate 244 on terminal box body is vertical with the Width of common bus 14, therefore want to allow common bus 14 and splicing ear weld, common bus must be turned back and just can then weld through perforate 244 after 90 °, shown in Fig. 3 b, this structure set-up mode existing problems mainly contain: the closely folded bit architecture that forms metal material in common bus bending part branch, so in the time that electric current passes through, easily produce electric spark, easily busbar itself and parts are around damaged, affect the useful life of product, moreover, after junction box glue-pouring sealing, easily producing bubble at common bus bending part, when photovoltaic module work, temperature can be very high, and bubble can constantly expand and cause gap constantly to become large, finally can affect quality and the useful life of whole terminal box, in addition, as shown in Figure 3 a, because need to being upward through perforate, welds down to the pad position of splicing ear again by busbar, the sweep of busbar has a stress always and exists, under long applied at elevated temperature environment after sealant pouring and sealing, this stress can exert an influence to the useful life of busbar itself and the effect being welded to connect, and then affected the useful life of whole terminal box.
For the problems referred to above, also has at present a solution, weld again a perpendicular busbar in the common bus end in photovoltaic module front, so, busbar, in the time being connected with the terminal box terminal at the back side through assembly, can directly weld through splicing ear perforate, but this mode can not fundamentally solve the above problems without bending, and increased use and the processing step of busbar, be not a kind of more thoroughly, solution that cost is low.
Summary of the invention
In view of above-mentioned the problems of the prior art, the object of this invention is to provide a kind of terminal box that busbar connects of being convenient to, can realize busbar with the convenient of terminal box splicing ear and be connected rapidly, technique is simple, connection is reliable, can not affect the useful life of busbar and terminal box.
To achieve the object of the present invention, a kind of photovoltaic component terminal box of being convenient to busbar connection of the present invention comprises terminal box body and electric connection line, described photovoltaic module comprises the battery pack string that use busbar connects multiple cell pieces and the common bus that battery pack string is connected with terminal box, in described terminal box body, be provided with multiple busbar splicing ears, be provided with the perforate parallel with the Width of the common bus of assembly at the position of described splicing ear, common bus is welded to connect with the pad position of splicing ear from described perforate passes.
Preferably, described splicing ear is plane layout.
Preferred again, described splicing ear is L-type setting, and its wrap direction is parallel with the Width of common bus.
Preferred again, the pad position of described busbar and splicing ear adopts electric resistance welding.
Preferred again, described each splicing ear is provided with two pad positions of welding with common bus.
Preferred again, described each splicing ear is provided with a pad position and described pad position setting in a row of welding with common bus.
The photovoltaic component terminal box of being convenient to busbar connection of the present invention is provided with the perforate parallel with the Width of common bus at the splicing ear position of terminal box, so, common bus can directly be welded to connect through the pad position of perforate and splicing ear without bending; Splicing ear adopts plane or L-type setting, uses respectively different welding procedures, so can eliminate to greatest extent the stress influence after welding, and structural design is simple, connects reliably the long service life of product.
Brief description of the drawings
By the detailed description below in conjunction with accompanying drawing, the present invention is aforesaid will be become apparent with other object, feature and advantage.Wherein:
Figure 1 shows that the structural representation of the photovoltaic module of prior art;
Figure 2 shows that the structural representation of the photovoltaic component terminal box of prior art;
Fig. 3 a is depicted as the cross-sectional schematic of the A-A face of Fig. 2;
Fig. 3 b is depicted as the schematic diagram of the common bus bending cabling of prior art;
Figure 4 shows that the structural representation of the photovoltaic component terminal box of being convenient to busbar connection of one embodiment of the invention;
Fig. 4 a is depicted as the cross-sectional schematic of the B-B face of Fig. 4;
Figure 5 shows that the structural representation of the photovoltaic component terminal box of being convenient to busbar connection of another embodiment of the present invention;
Fig. 5 a is depicted as the cross-sectional schematic of the C-C face of Fig. 5;
The structural representation of the photovoltaic component terminal box of being convenient to busbar connection of another embodiment of the present invention shown in Fig. 6.
Embodiment
By feature of the present invention and advantage, details are as follows by reference to the accompanying drawings:
The structural representation of the photovoltaic component terminal box of being convenient to busbar connection of one embodiment of the invention as shown in Figure 4, described terminal box comprises terminal box body 40 and electric connection line 42, described photovoltaic module comprises the battery pack string that use busbar connects multiple cell pieces and the common bus that battery pack string is connected with terminal box, in described terminal box body 40, be provided with multiple busbar splicing ears 44, be provided with the perforate 444 parallel with the Width of the common bus of assembly at the position of described splicing ear, common bus is welded to connect with the pad position 442 of splicing ear from described perforate 444 passes.
In the present embodiment, the copper sheet that described splicing ear 44 is plane layout, as shown in Fig. 4 a, in this embodiment, common bus 14 turns to directly and welds through after the perforate 444 and pad position 442 of splicing ear without bending from assembly front is passed, simple and the busbar of technique can not produce large stress concentration portion position, and can not be affected useful life.
The structural representation of the photovoltaic component terminal box of being convenient to busbar connection of another embodiment of the present invention as shown in Figure 5, as shown in Figure 5 a, described splicing ear 44 ' is L-type setting, and its wrap direction is parallel with the Width of common bus 14, in the time that common bus 14 passes from perforate 444, parallel with the vertical bending part of splicing ear and mutually press close to, this is just for electric resistance welding has been created condition, use electric resistance welding instrument directly busbar and splicing ear to be welded, without adopting traditional soldering technique, simple and the environmental protection of technique, can not produce the tin cigarette that human body is produced to injury, and this kind of welding connecting mode avoided the bending stress problem producing of busbar completely, extend the working life of busbar and terminal box.
Figure 4 shows that for existing in positive positive negative two the terminal box designs of always confluxing that adopt tiling up and down of assembly, in this design, correspondingly on the splicing ear 44 of terminal box be provided with upper and lower two pad positions 442, and in use, it is no on each splicing ear, all having a pad position 442, and this has just caused unnecessary waste.For this problem, the structural representation of the photovoltaic component terminal box of being convenient to busbar connection of another embodiment of the present invention as shown in Figure 6, on each splicing ear 44 of terminal box, be only provided with a pad position 442, photovoltaic module now can adopt the stacked design of the positive and negative electrode of common bus, and as long as an insulating barrier is set between positive and negative electrode busbar.So, can save the area of assembly, the size that more can reduce assembly junction box reduces manufacturing cost.
The photovoltaic component terminal box of being convenient to busbar connection of the present invention, be provided with at the splicing ear position of terminal box with assembly and draw the parallel perforate of the Width of common bus, so, common bus can directly be welded to connect through the pad position of perforate and splicing ear without bending; Splicing ear adopts plane or L-type setting, uses respectively different welding procedures, so can eliminate to greatest extent the stress influence after welding, and structural design is simple, connects reliably the long service life of product.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention openly in scope, still can do some corrections or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (6)
1. be convenient to the photovoltaic component terminal box that busbar connects for one kind, described photovoltaic module comprises the battery pack string that use busbar connects multiple cell pieces and the common bus that battery pack string is connected with terminal box, described terminal box comprises terminal box body and electric connection line, it is characterized in that, in described terminal box body, be provided with multiple busbar splicing ears, be provided with the perforate parallel with the Width of the common bus of assembly at the position of described splicing ear, common bus is welded to connect with the pad position of splicing ear from described perforate passes.
2. a kind of photovoltaic component terminal box that busbar connects of being convenient to as claimed in claim 1, is characterized in that, described splicing ear is plane layout.
3. a kind of photovoltaic component terminal box that busbar connects of being convenient to as claimed in claim 1, is characterized in that, described splicing ear is L-type setting, and its wrap direction is parallel with the Width of common bus.
4. a kind of photovoltaic component terminal box that busbar connects of being convenient to as claimed in claim 3, is characterized in that, described busbar and splicing ear adopt electric resistance welding.
5. a kind of photovoltaic component terminal box that busbar connects of being convenient to as claimed in claim 1, is characterized in that, described each splicing ear is provided with two pad positions of welding with common bus.
6. a kind of photovoltaic component terminal box that busbar connects of being convenient to as claimed in claim 1, is characterized in that, described each splicing ear is provided with a pad position and described pad position setting in a row of welding with common bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370450.XA CN104135226A (en) | 2014-07-31 | 2014-07-31 | Photovoltaic module junction box facilitating bus bar connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370450.XA CN104135226A (en) | 2014-07-31 | 2014-07-31 | Photovoltaic module junction box facilitating bus bar connection |
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| CN104135226A true CN104135226A (en) | 2014-11-05 |
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| CN201410370450.XA Pending CN104135226A (en) | 2014-07-31 | 2014-07-31 | Photovoltaic module junction box facilitating bus bar connection |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101488536A (en) * | 2007-09-13 | 2009-07-22 | 胡玉海 | Convergence belt for solar photovoltaic component and method for assembling solar panel by convergence belts |
| CN101753060A (en) * | 2008-12-19 | 2010-06-23 | 承建洪 | Photovoltaic terminal box |
| CN103050557A (en) * | 2011-10-12 | 2013-04-17 | 浚鑫科技股份有限公司 | Packaging circuit of solar cell string and solar cell module |
| CN203026535U (en) * | 2013-01-09 | 2013-06-26 | 莱尼电气线缆（常州）有限公司 | Totally-gummed sealed solar junction box |
| KR101305849B1 (en) * | 2011-12-09 | 2013-09-06 | 엘지이노텍 주식회사 | Solar cell module |
| CN203984345U (en) * | 2014-07-31 | 2014-12-03 | 苏州快可光伏电子股份有限公司 | A kind of photovoltaic component terminal box of being convenient to busbar connection |
-
2014
- 2014-07-31 CN CN201410370450.XA patent/CN104135226A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488536A (en) * | 2007-09-13 | 2009-07-22 | 胡玉海 | Convergence belt for solar photovoltaic component and method for assembling solar panel by convergence belts |
| CN101753060A (en) * | 2008-12-19 | 2010-06-23 | 承建洪 | Photovoltaic terminal box |
| CN103050557A (en) * | 2011-10-12 | 2013-04-17 | 浚鑫科技股份有限公司 | Packaging circuit of solar cell string and solar cell module |
| KR101305849B1 (en) * | 2011-12-09 | 2013-09-06 | 엘지이노텍 주식회사 | Solar cell module |
| CN203026535U (en) * | 2013-01-09 | 2013-06-26 | 莱尼电气线缆（常州）有限公司 | Totally-gummed sealed solar junction box |
| CN203984345U (en) * | 2014-07-31 | 2014-12-03 | 苏州快可光伏电子股份有限公司 | A kind of photovoltaic component terminal box of being convenient to busbar connection |
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Application publication date: 20141105 |
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