CN104901622A - Junction box for solar photovoltaic assembly - Google Patents
Junction box for solar photovoltaic assembly Download PDFInfo
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- CN104901622A CN104901622A CN201510282032.XA CN201510282032A CN104901622A CN 104901622 A CN104901622 A CN 104901622A CN 201510282032 A CN201510282032 A CN 201510282032A CN 104901622 A CN104901622 A CN 104901622A
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- busbar
- box body
- chamber
- electrically connected
- electrical connection
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- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000002955 isolation Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 abstract description 12
- 238000011161 development Methods 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
-
- 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
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
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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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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to a junction box for a solar photovoltaic assembly and belongs to the solar cell assembly technical field. The junction box includes a box body, an electric connection mechanism which is arranged in a box body cavity and is located on the bottom plate of the box body cavity, a bypass diode which is arranged in the box body cavity and is corresponding to a position above the electrical connection mechanism, and is electrically connected with the electric connection mechanism, and a box cover which is matched with the box body and is used for sheltering the electrical connection mechanism and the bypass diode which are arranged in the box body cavity. The junction box is characterized in that one electrical connection mechanism and one bypass diode are arranged in the box body cavity; in a use state, the electrical connection mechanisms in the box body cavities of two adjacent box bodies can be electrically connected with each other through one pair of bus-bars which are led into the box body cavities. With the junction box adopted, the heat dissipation effect of the bypass diode can satisfy requirements of high-power and large-current development direction of the solar photovoltaic assembly, and contradiction between the heat dissipation of the box body and the utilization of a high-power and large-current bypass diode can be alleviated. The junction box has the advantages of concise overall structure, convenience in production and fast assembly.
Description
Technical field
The invention belongs to solar module technical field, be specifically related to a kind of terminal box for solar photovoltaic assembly.
Background technology
The terminal box of solar photovoltaic assembly is the vitals exporting sun-generated electric power, be transition apparatus solar cell lead and external lead wire being implemented be connected, be usually made up of lid, cassette holder (also claiming box body), the bypass diode be arranged in cassette holder, electric wire and conduction bindiny mechanism.The effect of aforesaid bypass diode avoids reverse charging and undermines solar-energy photo-voltaic cell and prevent from bringing disaster to because of a solar-energy photo-voltaic cell short circuit the normal work of whole solar photovoltaic battery component.
As the industry's knowledge of the reason, during solar energy power generating, electric current can flow through the aforementioned bypass diode be located in cassette holder, and bypass diode is generated heat, therefore solar photovoltaic assembly terminal box must be made to have the radiating effect of standing out from one's fellows, use and make the heat produced by bypass diode be distributed to the external world.So, be no lack of to be seen in published Chinese patent literature and be intended to the heat produced by bypass diode effectively outwardly to distribute and use the technical scheme ensureing that bypass diode normally works.Typical in CN201639227U(solar photovoltaic assembly terminal block housings), CN101944546B(solar photovoltaic assembly terminal box), CN101442280A(solar photovoltaic assembly terminal box), the structure-improved of CN2716748Y(solar assembly junction box), the terminal box of the output line of CN101138098A(solar energy module and the installation method of this terminal box), CN200941388Y(Wiring box for solar photovoltaic electrification component), CN201075856Y(solar energy photovoltaic metallic wiring box), CN101286626A(solar photovoltaic metallic wiring box) and CN101459392A(solar-energy photo-voltaic cell system terminal box), etc..
By known to the reading of the patent documentation being not limited to exemplify above: the watt level of quality to selected bypass diode of terminal box radiating effect has a direct impact, specifically, terminal box radiating effect is better, so can select the bypass diode that power is relatively large, and vice versa.
And then as is known in the industry, current solar cell is progressively to high-power high-current future development, and therewith adaptably, aforesaid bypass diode is also corresponding to high-power future development.So, if the radiating effect of terminal box can not meet the cooling requirements of the bypass diode to high-power, the process that solar cell develops to high-power high-current so certainly can be hindered.
Although the terminal box involved by patent formula being not limited to exemplify above is to improving the equal tool positive effect of radiating effect, but still be not enough to adapt to the cooling requirements to the bypass diode under high-power high-current operating mode, reason is, the mentality of designing of people's butted line box does not break away from the constraint of traditional design theory all the time, and so-called traditional design theory main manifestations is following several factor: one is selected the material making terminal box; Two is in terminal box, form rational heat dissipation channel (comprising louvre) as far as possible; The set-up mode of three bypass diodes in terminal box body and position thereof are explored by three.But show through the experiment repeatedly that the applicant does, if do not break away from the yoke of aforementioned three kinds of factors, the degree that the heat distributed in the course of the work by three bypass diodes outwardly spreads by terminal box is limited all the time, consequently cannot adapt to the requirement of solar cell to high-power high-current future development.Therefore the problem how finding rational balance point between terminal box develops the thermal diffusivity of the excellence of bypass diode and the existing high-power high-currentization of solar cell suffers from industry for a long time, and patent and non-patent literature are showed no all technology enlightenments for using for reference disclosed in up to now.
For above-mentioned prior art, the applicant has done positive and useful exploration and design, finally defines technical scheme described below, and proves practicable through analogue test taking under secrecy provision.
Summary of the invention
Task of the present invention be to provide a kind of contribute to significantly improving the high-power high-current making bypass diode adapt to solar cell is used to the radiating effect of bypass diode require and be conducive to simplified structure and use convenient manufacture and the terminal box for solar photovoltaic assembly of installing.
Task of the present invention has been come like this, a kind of terminal box for solar photovoltaic assembly, comprise box body, in the box body chamber being arranged on box body and the electrical connection mechanism be positioned on the box body chamber base plate in box body chamber, be arranged on equally box endoceliac and correspond to the bypass diode that is electrically connected with electrical connection mechanism above electrical connection mechanism and match with box body for being arranged on the endoceliac electrical connection mechanism of box and bypass diode covers the lid protected, be characterised in that: the quantity of the endoceliac described electrical connection mechanism of box and bypass diode that are arranged on described box body is respectively one, and the endoceliac described electrical connection mechanism of the box of two adjacent pack is by being introduced into the endoceliac a pair busbar realization of box electrical connection each other in a state of use.
In a specific embodiment of the present invention, offer one in the front side of the box body chamber base plate corresponding to described box body chamber and introduce chamber for the busbar making box body chamber communicate with the external world, introduce chamber by this busbar and make box body chamber base plate form half intercept form box body chamber base plate, a pair described busbar is introduced in introducing box body chamber, chamber from described busbar and is electrically connected with described electrical connection mechanism, described bypass diode has pin and the pin that is electrically connected, and pin and the pin that is electrically connected all are electrically connected with electrical connection mechanism.
In another specific embodiment of the present invention, described box body chamber base plate is configured with the first electric connection board reference column and one second electric connection board reference column that one is raised in the upper surface of box body chamber base plate; Described electrical connection mechanism comprises the first electric connection board and one second electric connection board, one first electric connection board location hole is offered on the first electric connection board and corresponding to the position of the first electric connection board reference column, one second electric connection board location hole is offered on the second electric connection board and corresponding to the position of the second electric connection board reference column, first electric connection board location hole matches with the first electric connection board reference column, and the second electric connection board location hole matches with the second electric connection board reference column; Pin and described first electric connection board of described bypass diode are electrically connected, and be electrically connected described in bypass diode pin and described second electric connection board are electrically connected; Wherein a busbar and the first electric connection board in a pair described busbar are electrically connected, and another root busbar in a pair busbar and the second electric connection board are electrically connected.
In another specific embodiment of the present invention, the one end of introducing chamber towards described busbar at described first electric connection board is configured with one first busbar electrical connection leg, the direction that this first busbar electrical connection leg introduces chamber towards busbar is stretched, and the wherein busbar in a pair described busbar and this first busbar are electrically connected leg and are electrically connected; The one end of introducing chamber towards described busbar at described second electric connection board is configured with one second busbar electrical connection leg, this second busbar electrical connection leg stretches towards the direction that chamber introduced by busbar and to be electrically connected leg corresponding with the first busbar, and another root busbar in a pair described busbar and this second busbar are electrically connected leg and are electrically connected.
In another specific embodiment of the present invention, the first described busbar electrical connection leg offers one first busbar electrical connection hole, and on the second described busbar electrical connection leg, offer a second bar electrical connection hole, wherein busbar in a pair described busbar be electrically connected leg in the position corresponding to the first busbar electrical connection hole with the first busbar and is electrically connected, and another root busbar in a pair busbar is electrically connected leg in the position and the second busbar that are electrically connected hole corresponding to the second busbar and is electrically connected.
Also have in a specific embodiment of the present invention, the middle position of introducing the side in chamber at described box body chamber base plate towards described busbar is configured with an electrical isolation flange, and being configured with an electrical isolation sheet in busbar introducing chamber towards the side of box body chamber base plate and in the position corresponding to electrical isolation flange, electrical isolation flange and electrical isolation sheet form T-shaped position relationship each other.
More of the present invention and in a specific embodiment, the outer wall of the left and right sides of described box body is respectively configured with a cases snap in position to correspond to each other, and a lid card base is respectively configured with on the inwall of the left and right sides of described lid and in the position corresponding to cases snap, this lid card base matches with cases snap, be extended with a through box body sluicing stack limit in the bottom of described box body and around the surrounding of box body, between the lid basal surface of described lid and this box body sluicing stack limit, maintain gap.
In an of the present invention and then specific embodiment, be extended with a cable in the position in the lower left corner of described box body and introduce positioning seat, the cable introducing positioning seat chamber that positioning seat introduced by this cable communicates with described box body chamber, and is equipped with a cable briquetting in this electric current introducing positioning seat chamber; Introduce the position of positioning seat be extended with a positioning seat protecting cover in the lower left corner of described lid and corresponding to cable, introduce coordinating of positioning seat by this positioning seat protecting cover and cable and positioning seat chamber is introduced to cable cover and protect.
Of the present invention again more and in a specific embodiment, the left right chamber wall in described box body chamber is respectively configured with in the position corresponding to described busbar and introduce chamber the encapsulating reference mark flange being raised in chamber wall surface.
In an again of the present invention and then specific embodiment, the cable that the chamber diapire in described cable introducing positioning seat chamber is configured with the surface being raised in chamber diapire limits flange, described cable briquetting has a cable briquetting chamber, and the chamber roof in this cable briquetting chamber is configured with the cable defining flange on the surface being raised in chamber roof.
Technical scheme provided by the invention owing to only arranging an electrical connection mechanism and a bypass diode in the box body chamber of a box body, thus the quantity of housing is seemingly added, but the radiating effect of bypass diode can be made to meet the requirement of solar-energy photo-voltaic cell to high-power high-current future development, solve the contradiction between box body heat radiation and the bypass diode adopting high-power high-current; Because overall structure is terse, thus both conveniently can make, can fast assemble again.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention structure chart.
Fig. 2 is that the endoceliac electrical connection mechanism of box being positioned at two adjacent pack is realized the schematic diagram of electrical connection by a pair busbar.
Fig. 3 is the structure chart of the box body between two box bodys shown in Fig. 2.
Fig. 4 is the schematic diagram of the cable briquetting shown in Fig. 1 after upset 180 °.
Embodiment
Technical spirit of the present invention and beneficial effect can be fully understood in order to make the public; applicant will describe in detail the specific embodiment of the present invention below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to the present invention's design all should be considered as protection scope of the present invention.
Everyly in the following description relate to upper and lower, left and right, the concept of directivity (or claim directionality) of front and rear is all for the location status residing for the figure be described, object is to facilitate public understanding, thus can not be understood as being particularly limited to technical scheme provided by the invention.
Refer to Fig. 1 and Fig. 2, give box body 1, be arranged on box body 1 box body chamber 11 in and be positioned at electrical connection mechanism 2 on the box body chamber base plate 111 in box body chamber 11, be equally arranged on box body chamber 11 and correspond to the bypass diode 3 that is electrically connected with electrical connection mechanism 2 above electrical connection mechanism 2 and match with box body 1 for covering to the electrical connection mechanism 2 and bypass diode 3 that are arranged on box body chamber 11 lid 4 protected.
Shown in Fig. 1 and Fig. 2, aforesaid bypass diode 3 is welded and fixed with electrical connection mechanism 2, because the function of bypass diode 3 and electrical connection mechanism 2 and respective operation principle belong to known technology, such as can see the patent documentation mentioned in the superincumbent background technology hurdle of applicant, therefore applicant repeats no more.
Technical essential as technical scheme provided by the invention: the quantity being arranged on electrical connection mechanism 2 in the box body chamber 11 of aforementioned box body 1 and bypass diode 3 is respectively one, and the electrical connection mechanism 2 in the box body chamber 11 of two adjacent pack 1 is in a state of use illustrated by a pair busbar 5(Fig. 2 be introduced in box body chamber 11) realize each other electrical connection.It can thus be appreciated that, the present invention is three in the quantity of the using state lower box body 1 of reality, formally see and seem terminal box in prior art is broken the whole up into parts and adds the quantity of box body 1 and perhaps add manufacturing cost, but the structure due to box body 1 becomes significantly simple, and volume significantly reduces, thus the quantity increasing box body 1 relative to prior art because three bypass diodes 3 are caused rapid wear (box body 1 radiating effect is poor to be caused) and for the frequent use cost changing whole box body 1 with being located in a box body 1, the present invention has the advantage that prior art cannot match in excellence or beauty, to a certain extent, instant invention overcomes the design prejudice of prior art, because its technique effect produced is that prior art cannot be expected.
Please see Fig. 1 by emphasis, offer one in the position of the front side of the box body chamber base plate 111 corresponding to aforementioned box body chamber 11 and introduce chamber 112 for the busbar making box body chamber 11 communicate with the external world, introduce chamber 112 by this busbar and make box body chamber base plate 111 form half intercept form box body chamber base plate (i.e. half range formula base plate), aforesaid a pair busbar 5 is introduced in box body chamber 11 from busbar introducing chamber 112 and is electrically connected with electrical connection mechanism 2, aforesaid bypass diode 3 has pin 31 and the pin 32 that is electrically connected, and this pin 31 and the pin 32 that is electrically connected all are electrically connected with electrical connection mechanism 2.
Preferably, aforesaid box body chamber base plate 111 is configured with the first electric connection board reference column 1111 and one second electric connection board reference column 1112 that is raised in the upper surface of box body chamber base plate 111, aforesaid electrical connection mechanism 2 comprises the first electric connection board 21(also can claim metallic conduction sheet, as follows) and one second electric connection board 22(also can claim metallic conduction sheet, as follows), one first electric connection board location hole 211 is offered on the first electric connection board 21 and corresponding to the position of the first electric connection board reference column 1111, one second electric connection board location hole 221 is offered on the second electric connection board 22 and corresponding to the position of the second electric connection board reference column 1112, first electric connection board location hole 211 is matched with the first electric connection board reference column 1111 and is positioned at by heat fusing welding manner on the first electric connection board reference column 1111, second electric connection board location hole 221 is matched with the second electric connection board reference column 1112 and is positioned at by heat fusing welding manner on the second electric connection board reference column 1112, wherein a busbar 5 and the first electric connection board 21 in aforesaid a pair busbar 5 are electrically connected, and another root busbar in a pair busbar 5 and the second electric connection board 22 are electrically connected.The pin 31 of aforesaid bypass diode 3 is electrically connected by welding and the first electric connection board 31, and the aforesaid pin 32 that is electrically connected is electrically connected by welding and the second electric connection board 22 equally.
Preferably, the one end of introducing chamber 112 towards described busbar at aforementioned first electric connection board 21 is configured with one first busbar electrical connection leg 212, the direction that this first busbar electrical connection leg 212 introduces chamber 112 towards busbar is stretched, and the wherein busbar in aforesaid a pair busbar 5 and this first busbar are electrically connected leg 212 and are electrically connected; The one end of introducing chamber 112 towards busbar at aforementioned second electric connection board 22 is configured with one second busbar electrical connection leg 222, this second busbar electrical connection leg 222 stretches towards the direction that chamber 112 introduced by busbar and to be electrically connected leg 212 corresponding with the first busbar, and another root busbar in aforesaid a pair busbar 5 and this second busbar are electrically connected leg 222 and are electrically connected.
Aforesaid first busbar electrical connection leg 212 offers one first busbar electrical connection hole 2121, and on aforesaid second busbar electrical connection leg 222, offer a second bar electrical connection hole 2221, wherein busbar in aforesaid a pair busbar 5 be electrically connected leg 212 in the position corresponding to the first busbar electrical connection hole 2121 with the first busbar and is electrically connected, and another root busbar in a pair busbar 5 is electrically connected leg 222 in the position and the second busbar that are electrically connected hole 2221 corresponding to the second busbar and is electrically connected.
Please continue to refer to Fig. 1, the middle position of introducing the side in chamber 112 at aforementioned box body chamber base plate 111 towards aforementioned busbar is configured with an electrical isolation flange 113, and be configured with an electrical isolation sheet 1121 in busbar introducing chamber 112 towards the side of box body chamber base plate 111 and in the position corresponding to electrical isolation flange 113, electrical isolation flange 113 and electrical isolation sheet 1121 form T-shaped position relationship each other, namely electrical isolation sheet 1121 is perpendicular to electrical isolation flange 113, but both do not contact.The abnormal electrical contact that electrical isolation flange 113 and electrical isolation sheet 1121 can stop a pair busbar 5 likely to produce and cause the situation of short circuit.
As shown in Figure 1, the outer wall of the left and right sides of aforementioned box body 1 is respectively configured with a cases snap 12 in position to correspond to each other, and a lid card base 41 is respectively configured with on the inwall of the left and right sides of lid 4 and in the position corresponding to cases snap 12, this lid card base 41 matches with cases snap 12.In addition, a through box body sluicing stack limit 13 is extended with in the bottom of aforementioned box body 1 and around the surrounding of box body 1, gap is maintained between the lid basal surface 42 of aforementioned lid 4 and this box body sluicing stack limit 13, box body sluicing stack limit 13 also can be described as box body sluicing shirt rim, both contributed to ventilating, be conducive to again making the water (rainwater primarily of precipitation weather produces) entered in the aforementioned gap between lid basal surface 42 and box body sluicing stack limit 13 to let out fast to remove and evaporate and gasify, be convenient to the position of instrument such as screwdriver is corresponding to this gap in addition and open lid 4.
Be extended with a cable in the position in the lower left corner of box body 1 and introduce positioning seat 14, the cable introducing positioning seat chamber 141 that positioning seat 14 introduced by this cable communicates with aforesaid box body chamber 11, and is equipped with a cable briquetting 142 in this cable introducing positioning seat chamber 141; Introduce the position of positioning seat 14 be extended with a positioning seat protecting cover 43 in the lower left corner of lid 4 and corresponding to cable, introduce coordinating of positioning seat 14 by this positioning seat protecting cover 43 and cable and positioning seat chamber 141 is introduced to cable cover and protect.In a state of use, cable briquetting 142 by the mode of ultrasonic bonding with to introduce positioning seat chamber 141 fixing with cable.
Preferably, the left right chamber wall in aforesaid box body chamber 11 is respectively configured with in the position corresponding to described busbar and introduce chamber 112 the encapsulating reference mark flange 114 being raised in chamber wall surface, the upper surface of this encapsulating reference mark flange 114 is a little less than plane on the chamber in box body chamber 11, lower than degree be preferably 0.3-0.8 ㎜, being 0.4-0.6 ㎜ preferably, is 0.5 ㎜ better.In the present embodiment; the upper surface of encapsulating reference mark flange 114 is lower than accent 0.5 ㎜ in box body chamber 11; thus the blindness when pouring into fluid sealant in box body chamber 11 can be avoided; because exceedingly excess encapsulating can cause unnecessary waste, otherwise the protected effect to the aforementioned bypass diode 3 be arranged in box body chamber 11 can be affected.
Refer to Fig. 4 and composition graphs 1 and Fig. 2, the cable that the chamber diapire in aforementioned cable introducing positioning seat chamber 141 is configured with the surface being raised in chamber diapire limits flange 1411, aforementioned cable briquetting 142 has a cable briquetting chamber 1421, and the cable defining flange 14211(being configured with the surface being raised in chamber roof on the chamber roof in this cable briquetting chamber 1421 is shown in detail by Fig. 4).The function that aforementioned cable limits flange 1411 and cable defining flange 14211 increases the holdback force to cable 6 as shown in Figure 2, stops cable 6 to be shaken off from box body 1 easily.
Known by the superincumbent explanation of applicant, due to when reality uses, the quantity of box body 1 is three, and for the location status shown in Fig. 2, with left, center, right arrangement (also can arrange for upper, middle and lower), the structure of left and right each box body is identical, only that cable is introduced the position of positioning seat 14 and be there are differences, therefore each introducing on positioning seat 14 introduced by the cable of each box body 1 in left and right a cable 6 for being electrically connected with electrical connection mechanism 2, and cable 6 is limited by aforesaid cable briquetting 142 and is welded and fixed with the first electric connection board 21.In addition conveniently wiring, also the surface of positioning seat protecting cover 43 of a lid 4 on the left side and the right the power supply mark 431 representing that power supply is positive and negative can be designed respectively as preferred scheme, power supply mark 431 on the positioning seat protecting cover 43 of two lids 4 of arranged on left and right sides is different, when one for power-mark (-), then another is just marking (+) for power supply, otherwise with example.
Refer to Fig. 3 and composition graphs 2, because the box body 1 being positioned at centre of Fig. 3 signal is without the need to spliced cables 6, thus eliminate cable and introduce positioning seat 14, also eliminate corresponding positioning seat protecting cover 43 to its supporting lid 4, and all the other structures are all identical with structure shown in Fig. 1.
During assembling, first bypass diode 3 and electrical connection mechanism 2 to be electrically connected, then by the electrical connection with electrical connection mechanism 2 of cable 6 and a pair busbar 5, then to box body chamber 11 embedding fluid sealant, after encapsulating completes, then lid 4 and box body 1 are covered to join.
Claims (10)
1.
a kind of terminal box for solar photovoltaic assembly, comprise box body (1), in the box body chamber (11) being arranged on box body (1) and the electrical connection mechanism (2) be positioned on box body chamber base plate (111) in box body chamber (11), be arranged on equally in box body chamber (11) and the bypass diode (3) be electrically connected at the top and the electrical connection mechanism (2) that correspond to electrical connection mechanism (2) and match with box body (1) for covering the lid (4) protected to the electrical connection mechanism (2) be arranged in box body chamber (11) and bypass diode (3), it is characterized in that: the quantity being arranged on described electrical connection mechanism (2) in the box body chamber (11) of described box body (1) and bypass diode (3) is respectively one, and the described electrical connection mechanism (2) in the box body chamber (11) of two adjacent pack (1) in a state of use realizes electrical connection each other by a pair busbar (5) be introduced in box body chamber (11).
2.
terminal box for solar photovoltaic assembly according to claim 1, it is characterized in that offering one introduces chamber (112) in the front side in box body chamber base plate (111) corresponding to described box body chamber (11) for the busbar making box body chamber (11) communicate with the external world, introduce chamber (112) by this busbar and make box body chamber base plate (111) form half intercept form box body chamber base plate, described a pair busbar (5) is introduced in chamber (112) introducing box body chamber (11) from described busbar and is electrically connected with described electrical connection mechanism (2), described bypass diode (3) has pin (31) and the pin that is electrically connected (32), pin (31) and the pin that is electrically connected (32) are all electrically connected with electrical connection mechanism (2).
3.
terminal box for solar photovoltaic assembly according to claim 1 and 2, is characterized in that on described box body chamber base plate (111), be configured with the first electric connection board reference column (1111) and the one second electric connection board reference column (1112) that is raised in the upper surface in box body chamber base plate (111), described electrical connection mechanism (2) comprises the first electric connection board (21) and one second electric connection board (22), go up at the first electric connection board (21) and offer one first electric connection board location hole (211) in the position corresponding to the first electric connection board reference column (1111), go up at the second electric connection board (22) and offer one second electric connection board location hole (221) in the position corresponding to the second electric connection board reference column (1112), first electric connection board location hole (211) matches with the first electric connection board reference column (1111), second electric connection board location hole (221) matches with the second electric connection board reference column (1112), pin (31) and described first electric connection board (21) of described bypass diode (3) are electrically connected, and the pin (32) that is electrically connected described in bypass diode (3) is electrically connected with described second electric connection board (22), wherein busbar (5) in described a pair busbar (5) is electrically connected with the first electric connection board (21), and another root busbar in a pair busbar (5) and the second electric connection board (22) are electrically connected.
4.
terminal box for solar photovoltaic assembly according to claim 3, it is characterized in that the one end of introducing chamber (112) towards described busbar described first electric connection board (21) is configured with one first busbar electrical connection leg (212), the direction that this first busbar electrical connection leg (212) introduces chamber (112) towards busbar is stretched, and the wherein busbar in described a pair busbar (5) and this first busbar are electrically connected leg (212) and are electrically connected; The one end of introducing chamber (112) towards described busbar described second electric connection board (22) is configured with one second busbar electrical connection leg (222), this second busbar electrical connection leg (222) stretches towards the direction that chamber (112) introduced by busbar and to be electrically connected leg (212) corresponding with the first busbar, and another root busbar in described a pair busbar (5) and this second busbar are electrically connected leg (222) and are electrically connected.
5.
terminal box for solar photovoltaic assembly according to claim 4, it is characterized in that offering one first busbar electrical connection hole (2121) on the first described busbar electrical connection leg (212), and on the second described busbar electrical connection leg (222), offer second bar electrical connection hole (2221), a wherein busbar in described a pair busbar (5) is electrically connected leg (212) in the position and the first busbar that correspond to the first busbar electrical connection hole (2121) and is electrically connected, and another root busbar in a pair busbar (5) is electrically connected leg (222) in the position and the second busbar that correspond to the second busbar electrical connection hole (2221) and is electrically connected.
6.
terminal box for solar photovoltaic assembly according to claim 2, it is characterized in that the middle position of the side of introducing chamber (112) described box body chamber base plate (111) towards described busbar is configured with an electrical isolation flange (113), and being configured with an electrical isolation sheet (1121) at busbar introducing chamber (112) towards the side in box body chamber base plate (111) and in the position corresponding to electrical isolation flange (113), electrical isolation flange (113) and electrical isolation sheet (1121) form T-shaped position relationship each other.
7.
terminal box for solar photovoltaic assembly according to claim 1, to it is characterized in that on the outer wall of the left and right sides of described box body (1) and to be respectively configured with a cases snap (12) in position to correspond to each other, and a lid card base (41) is respectively configured with on the inwall of the left and right sides of described lid (4) and in the position corresponding to cases snap (12), this lid card base (41) matches with cases snap (12), a through box body sluicing stack limit (13) is extended with in the bottom of described box body (1) and around the surrounding of box body (1), gap is maintained between the lid basal surface (42) of described lid (4) and this box body sluicing stack limit (13).
8.
terminal box for solar photovoltaic assembly according to claim 1, it is characterized in that being extended with a cable in the position in the lower left corner of described box body (1) introduces positioning seat (14), cable introducing positioning seat chamber (141) that positioning seat (14) introduced by this cable communicates with described box body chamber (11), and is equipped with a cable briquetting (142) in this electric current introducing positioning seat chamber (141); Be extended with a positioning seat protecting cover (43) in the lower left corner of described lid (4) in the position corresponding to cable and introduce positioning seat (14), introduce coordinating of positioning seat (14) by this positioning seat protecting cover (43) and cable and positioning seat chamber (141) is introduced to cable cover and protect.
9.
terminal box for solar photovoltaic assembly according to claim 2, to is characterized in that on the left right chamber wall in described box body chamber (11) and to be respectively configured with in the position corresponding to described busbar and introduce chamber (112) the encapsulating reference mark flange (114) being raised in chamber wall surface.
10.
terminal box for solar photovoltaic assembly according to claim 8, it is characterized in that the cable being configured with the surface being raised in chamber diapire on the chamber diapire that positioning seat chamber (141) introduced by described cable limits flange (1411), described cable briquetting (142) has a cable briquetting chamber (1421), and the chamber roof in this cable briquetting chamber (1421) is configured with the cable defining flange (14211) on the surface being raised in chamber roof.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282032.XA CN104901622A (en) | 2015-05-28 | 2015-05-28 | Junction box for solar photovoltaic assembly |
| PCT/CN2015/096370 WO2016188080A1 (en) | 2015-05-28 | 2015-12-04 | Junction box for solar photovoltaic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282032.XA CN104901622A (en) | 2015-05-28 | 2015-05-28 | Junction box for solar photovoltaic assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104901622A true CN104901622A (en) | 2015-09-09 |
Family
ID=54034058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510282032.XA Pending CN104901622A (en) | 2015-05-28 | 2015-05-28 | Junction box for solar photovoltaic assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104901622A (en) |
| WO (1) | WO2016188080A1 (en) |
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| WO2016188080A1 (en) * | 2015-05-28 | 2016-12-01 | 常熟市冠日新材料有限公司 | Junction box for solar photovoltaic assembly |
| CN107800379A (en) * | 2017-11-24 | 2018-03-13 | 浙江人和光伏科技有限公司 | A kind of photovoltaic wiring units |
| CN108134574A (en) * | 2017-12-14 | 2018-06-08 | 常州星海电子股份有限公司 | Solar junction box triad photovoltaic module |
| CN110138334A (en) * | 2019-06-14 | 2019-08-16 | 江苏最上电气有限公司 | A kind of waterproof construction for photovoltaic junction box |
| WO2021208456A1 (en) * | 2020-04-17 | 2021-10-21 | 泰州隆基乐叶光伏科技有限公司 | Junction box, photovoltaic module and wiring method |
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| WO2016188080A1 (en) | 2016-12-01 |
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