CN201797464U - Terminal box of solar photovoltaic component - Google Patents

Abstract

A terminal box of a solar photovoltaic component belongs to solar power supply components and comprises a box body provided with a hollow cavity, a box cover covering and matched with the box body, a set of bypass diodes and a set of electric conduction connecting plates. The electric conduction connecting plates are fixed inside the cavity of the box body and are separated from each other, one bypass diode is serially connected between the adjacent electric conduction connecting plates, radiation fin insertion slots with the number the same as the number of the electric conduction connecting plates are concavely formed inside the cavity of the box body in the positions corresponding to the electric conduction connecting plates, radiation fins are embedded inside the radiation fin insertion slots, and the electric conduction connecting plates contact with the radiation fins; and a ventilation slot is formed at the exterior bottom of the box body, a side vent communicated with the surroundings is arranged on each side of the exterior bottom of the box body, and the side vents are communicated with the ventilation slot. The technical scheme provided by the utility model has more ideal heat radiation effect, so as to increase the power of the bypass diodes.

Description

The solar photovoltaic assembly terminal box

Technical field

The utility model belongs to sun-generated electric power component technology field, is specifically related to a kind of solar photovoltaic assembly terminal box.

Background technology

As everyone knows, the solar photovoltaic assembly terminal box is the critical piece of output sun-generated electric power, comprises the terminal box box body, is located at bypass diode, electric wire and cable connector in the box body.Terminal box is as the transition apparatus that solar cell lead is connected with external lead wire, in inside the effect of set aforesaid bypass diode be prevent reverse charging and undermine solar-energy photo-voltaic cell with prevent because of a solar-energy photo-voltaic cell short circuit causes whole solar photovoltaic battery component can't operate as normal.

When solar energy power generating, bigger electric current can flow through the bypass diode in the solar junction box, makes the bypass diode heating, thereby should make terminal box have excellent radiating effect as much as possible, uses the heat that bypass diode is produced and is distributed to the external world.

Be no lack of in disclosed Chinese patent literature around the technical scheme of solar photovoltaic assembly terminal box heat radiation and be seen in.The Wiring box for solar photovoltaic electrification component that patent of invention publication number CN101442280A recommends has remedied the CN2716748Y in the prior art (structure-improved of solar assembly junction box), CN101138098A (terminal box of the output line of solar energy module and the installation method of this terminal box), CN200941388Y (solar photovoltaic electrification component plug wire box) and the existing logical fraud of CN201075856Y (solar energy photovoltaic metallic wiring box), specifically can be referring to the 2nd page of the 2nd row of the 1st page of inverse 8-of specification of CN101442280A, this patent application scheme is that bypass diode is installed on one piece of fin, both sides at the long side direction of box body constitute the box wing, exterior bottom at the middle part of the long side direction of box body extends raised line at interval, is made of and the extraneous air duct that communicates the space between the raised line.Has desirable result of ventilating heat dissipation when undoubtedly this patent application scheme is on being installed on solar photovoltaic cell panel.The solar photovoltaic metallic wiring box that CN101286626A discloses is between the shell of aluminium alloy and the nonmetal inner casing of ring-type heat-dissipating cavity to be set, and uses and improves waterproof and dampproof and radiating effect.By heat abstractor is set on the lid, heat abstractor is made up of some fin that tilt with respect to the lid upper surface with terminal box in the solar-energy photo-voltaic cell system that CN101459392A discloses, and the ventilating air permeability of butted line box has positive effect.

The common shortcoming that above-mentioned application CN101442280A, CN101286626A and CN101459392A exist is: leave fast during the heat utmost point that all bypass diode can not be produced when the work, because the aforementioned patent applications scheme all is to ensure that in the mode of ventilating the heat of bypass diode distributes, and venting practice is essentially a kind of indirectly but not directly cooling measure, and the utmost point time property that its radiating effect especially dispels the heat can't reach gratifying degree undoubtedly.Well-known reason, terminal box is in open-air state usually, be subjected to environmental factor for example expose to the sun and rain and avenge the frost and so on influence bigger, therefore unaffected in order to ensure (in the box body) electric component of inside, terminal box must have good sealing property, and sealing is good more, and then heat dispersion is difficult to guarantee more.Under the continuous high temperature state, the performance of the bypass diode that works long hours can descend gradually, and the lost of life also can cause the circuit open circuit when serious, finally influence the performance of the proper efficiency of solar panel.

With regard to present technology, should, the sealing problem that solves terminal box has been reached masterly degree, promptly have any technology barrier hardly, yet be in stage of continuous exploration all the time for the ultimate attainment performance of the radiating effect of terminal box, because the watt level of the bypass diode that is provided with in the box body is directly related with the height of the degree of heat radiation of terminal box.That is to say, if the good heat dissipation effect of terminal box, the power of bypass diode just can correspondingly increase so, thereby can avoid bypass diode because of the fragile problem that easily causes damage of the little thermal endurance of power, uses and fully plays the operate as normal that ensures solar photovoltaic battery component.

In order to substantially improve the radiating effect of terminal box, the applicant has carried out long-term concern and trial, and technical scheme described below produces under above-mentioned background.

Summary of the invention

Task of the present utility model is to provide a kind of radiating effect even more ideal and use the power that is located at the bypass diode in the box body is increased with the whole solar photovoltaic battery component of the abundant guarantee solar photovoltaic assembly terminal box of operate as normal enduringly.

Task of the present utility model is finished like this, a kind of solar photovoltaic assembly terminal box, comprise box body with the chamber of soaring, the lid of joining with tray cover, one group of bypass diode and one group of conductive connection plates, one group of conductive connection plates is fixed in the box chamber of box body, and space, described bypass diode of serial connection between the adjacent conductive connecting plate, be characterised in that: be concaved with the fin insertion slot that quantity equates with the quantity of conductive connection plates in the box chamber of described box body and at position corresponding to described conductive connection plates, be embedded with fin in each fin insertion slot, described conductive connection plates contacts with described fin; The outer bottom of described box body constitutes ventilation slot, and respectively offer in the both sides of the outer bottom of box body one with the extraneous side blow vent that communicates, the side blow vent communicates with described ventilation slot.

In a specific embodiment of the present utility model, in described box chamber and an end that is positioned at the length direction in box chamber offer relief hole, relief hole communicates with described ventilation slot.

In another specific embodiment of the present utility model, offer the conductive connection plates fixing screw hole on the described conductive connection plates, and on described fin and at position, offer the fin fixing screw hole corresponding to described conductive connection plates fixing screw hole, conductive connection plates is passed the box chamber diapire in the box chamber of conductive connection plates fixing screw hole and described fin fixing screw hole and described box body and is fixed by hold-down screw, and the incoming end of each conductive connection plates is stretched in the chamber of soaring that corresponds to described box body outside the described box chamber, the chamber of soaring is parallel with the box chamber, and simultaneously by described lid cap seal, and the end that picks out of conductive connection plates is connected with outgoing cable.

In another specific embodiment of the present utility model, the global shape of the profile of described fin is the door font, and described fin insertion slot is a door font groove.

In another specific embodiment of the present utility model, offer bypass diode pin hole on the described conductive connection plates, described bypass diode has one first pin and one second pin, first pin probes in the bypass diode pin hole on the conductive connection plates, second pin then probes in the bypass diode pin hole on another conductive connection plates, and first, second pin and described fin paste and touch.

Also have in the specific embodiment of the present utility model, the spacing between described one group of conductive connection plates is that the length with described bypass diode adapts.

More of the present utility model and in specific embodiment, respectively be extended with a blend stop plant projection on the described box chamber and at two ends with the position, boundary in the described chamber of soaring, between a pair of blend stop plant projection, be plugged with a blend stop, the described box chamber and the chamber of soaring separated by blend stop 6.

In of the present utility model and then specific embodiment, the material of described fin is a metal.

Of the present utility model again more and in specific embodiment, on the described box body and the two ends of a side that are positioned at the length direction of described box body respectively offer a mortise, the two ends of one side of the long side direction of described lid and respectively be extended with a tenon at the position corresponding to described mortise, tenon matches with mortise.

In again of the present utility model and then specific embodiment, offer the pin groove on the described fin and towards a side of described first pin and second pin, described first pin and second pin all are embedded in the pin groove.

The technical scheme that the utility model provides is because in the box chamber of box body and offering the fin insertion slot that equates with the quantity of conductive connection plates corresponding to the position of conductive connection plates, at each fin insertion slot interpolation embedding fin, conductive connection plates contacts with fin, in bypass diode when work,, the heat of producing was directly passed to box body by fin in the mode of heat transmission, ventilation slot by the box body bottom distributes, and then drain into the external world by the side blow vent, therefore have even more ideal radiating effect with respect to prior art, thereby the power of bypass diode is increased.

Description of drawings

Fig. 1 is a specific embodiment structure chart of the present utility model.

Fig. 2 is the schematic diagram that removes behind the lid.

Embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in conjunction with the accompanying drawings in the mode of embodiment below, but to the description of embodiment all is not restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

Ask for an interview Fig. 1 and Fig. 2, in order clearly to show structure of the present utility model, in Fig. 1, the applicant has overturn 180 ° with the box body 1 of terminal box, makes at the bottom of the box of box body 1 towards last, and Fig. 2 is then opposite.By illustrated in figures 1 and 2, all be arranged in the box chamber 11 (Fig. 2 shows) of box body 1 as the solar photovoltaic assembly terminal box comprises box body 1, the lid 2 (Fig. 2 has removed lid 2) of joining with box body 1 lid, one group of quantity are three bypass diode 3 and one group of quantity is four pieces 4, one groups of bypass diodes 3 of conductive connection plates and one group of conductive connection plates 4.Undoubtedly, one group of conductive connection plates 4 is metalwork, promptly made by sheet metal, and fixing spaced reciprocally (following also will describe in detail) in box chamber 11, arranges a bypass diode 3 between the adjacent conductive connecting plate 4.One side of the length direction of aforesaid box body 1 has the chamber of soaring 15, that is to say, the chamber 15 of soaring is parallel with a side of the length direction in box chamber 11,11 respectively are extended with a blend stop plant projection 16 by Fig. 2 signal with the two ends at position, boundary (also can claim to border on the position) in the chamber 15 of soaring in the box chamber, insert a blend stop 6 between a pair of blend stop plant projection 16.By the clear signal of Fig. 1, respectively be extended with a plug 61 at the two ends of blend stop 6, each plug 61 has a socket 611, by socket 611 with blend stop 6 insertings on aforesaid blend stop plant projection 16, thereby by blend stop 6 accent of a side of the long side direction in box chamber 11 and the chamber 15 of soaring are separated.In the time will implementing sealing, when promptly bypass diode 3 envelopes being protected, then blend stop 6 is placed on the blend stop plant projection 16, soar chamber 15 and the waste that causes adhesive to avoid when sealing adhesive to overflow into (spread and enter).Otherwise, do not adopt other seal approach for example to use rubber gasket etc. if do not carry out sealing, can need to select requirement thereby can satisfy complying with of user in order to avoid blend stop 6 is placed on the blend stop plant projection 16 so.

As technical essential of the present utility model: in the box chamber of aforesaid box body 1, constitute equate with the quantity of aforesaid conductive connection plates 4 and the corresponding fin insertion slot 111 in position, each fin insertion slot 111 interpolation embeddings one material is preferably the fin 5 of aluminium or copper, and conductive connection plates 4 is fixed together with fin 5.Specifically be on conductive connection plates 4, to offer a conductive connection plates fixing screw hole 41, on fin 5 and offering fin fixing screw hole 51 corresponding to the position of conductive connection plates fixing screw hole 41, by hold-down screw 42 pass conductive connection plates fixing screw hole 41 back so that pass fin fixing screw hole 51 with conductive connection plates 4 and fin 5 jointly with the diapire in box chamber 11 on fixing screw hole fix, make conductive connection plates 4 and fin 5 fit (reclining) each other together.The incoming end 43 of conductive connection plates 4 probes into the aforesaid chamber 15 of soaring, for being electrically connected with solar module, and by 43 location, trim ring 431 access sides, trim ring 431 is inserted on the trim ring seat 1121 that constitutes on the diapire 112 that is embedded in box chamber 11, trim ring seat 11 is in the face of the aforesaid chamber 15 of soaring, that is to say that trim ring seat 1121 is positioned at the outside in box chamber 11, promptly be positioned at the side towards the chamber 15 of soaring of aforesaid blend stop plant projection 16.Preferred scheme can set a trim ring screw 4311 on trim ring 431, by 4311 pairs of aforesaid incoming ends of trim ring screw, 43 location (specifically seeing Fig. 2).The end 44 that picks out of conductive connection plates 4 is connected with outgoing cable 441, and outgoing cable 441 is fixed by outgoing cable setscrew nut 4411 and the nut seat 18 that extends integratedly on box body 1.

Continue to see Fig. 1 and Fig. 2, offer bypass diode pin hole 45 on each conductive connection plates 4 in aforesaid one group of conductive connection plates 4, and be concaved with pin groove 52 towards a side of conductive connection plates 4 at each fin 5.Aforesaid one group (three) bypass diode 3 respectively has one first pin 31 and one second pin 32, end by first pin 31 shown in Figure 1 is placed in one piece of bypass diode pin hole 45 on the conductive connection plates 4, the end of second pin 32 then is placed in the bypass diode pin hole 45 on another piece conductive connection plates 4 (because being equipped with a bypass diode 3 between the two adjacent conductive connection plates 4), aforesaid first pin 31 also with one piece of fin 5 on pin groove 52 scarves, second pin 32 then with another piece fin 5 on pin groove 52 scarves.Comparatively preferred scheme is that the length of spacing between the two adjacent conductive connection plates 4 and bypass diode 3 is suitable.

By shown in Figure 1, because the quantity of one group of conductive connection plates 4 is four pieces, therefore the quantity of one group of fin 5 also should have four pieces mutually, the shape of each fin 5 on both sides is a shape, and for simple gate shape structure promptly is n shape, though and two middle fin 5 also are a shape, the structure that shows two-door shape promptly is m shape.In other words, in four pieces of fin 5, the length of two pieces of fin 5 in the middle of being positioned at is identical and than the length long (length of the fin 5 of both sides is identical) of the fin 5 of both sides, this is because each keeps somewhere the cause that a lead-in wire chamber 113 (Fig. 2 shows) is arranged at the two ends of the side in aforesaid box chamber 11, make the narrowed width in box chamber 11, thereby conductive connection plates 4 and fin 5 are shortened because of the chamber 113 of avoiding going between.Aforesaid outgoing cable 441 in lead-in wire chamber 113 be insinuated into picking out of the conductive connection plates 4 of lead-in wire in the chamber 113 and hold 44 enforcements to be electrically connected.

Because the shape of fin 5 is a font, therefore the fin insertion slot 111 that is formed in the box chamber 11 also is a shape groove.Observe by the carefulness to Fig. 1, as can be known, the ventilation slot 12 that is formed in the outer bottom of box body 1 comes down to be formed by outside extension of the material that constitutes fin insertion slot 111, making between the heat radiation film trap 111 not only vertically to communicate, and lateral direction penetrating.For the air in the ventilation slot 12 is linked up with extraneous, therefore respectively offer a side blow vent 13a who all communicates with the external world at the two ends of box body 1 exterior bottom wall, side blow vent 13a communicates with ventilation slot 12.Comparatively preferred scheme also can be to offer the front blow vent 13b that quantity is not subjected to diagram (three) restricted number on the wall body of an aforesaid side that constitutes nut seat 18 in a side of box body 1, and front blow vent 13b communicates with described ventilation slot 12 equally.

Please see Fig. 1 then, in the box chamber 11 of box body 1 and an end that is positioned at box chamber 11 offer relief hole 14, relief hole 14 (also can claim air vent hole, because play the ventilation effect) communicates with ventilation slot 12 equally.In addition, join in order to make lid 2 and box body 1 convenient cap, two ends in a side of the long side direction of box body 1 respectively offer a mortise 17, and respectively be extended with a tenon 21 at the two ends of a side of the long side direction of lid 2 and at position corresponding to mortise 17, by tenon 21 inserts mortises 17 lid 2 and box body 1 lid are joined.Can be on lid 23 with lid 2 and box body 1 lid timing sheathed sealing ring.

Under user mode, the box body 1 with side of ventilation slot 12 is fixed with solar photovoltaic battery component (also claiming solar photovoltaic cell panel), that is, with state shown in Figure 2 terminal box of the present utility model is fixed on the solar photovoltaic cell panel.Because the function and the operation principle of solar photovoltaic assembly terminal box belong to known technology, so the applicant is no longer given unnecessary details.But, because the applicant is provided with fin insertion slot 111 in the box chamber 11 of box body 1 and in the position corresponding to conductive connection plates 4, in each fin insertion slot 111, be embedded fin 5, therefore, when bypass diode 3 work, the high temperature that is produced can be directly passed to the cell wall of fin insertion slot 111 in the mode of heat transmission by metal material and the fin 5 heat transfer performance excellence, and then drains into the external world by ventilation slot 12 through front blow vent 13b, 13a.The utility model scheme is on probation under secrecy provision through the applicant, the result has shockingly shown the radiating effect that comprises the terminal box in the patent application scheme that the applicant mentions in the above that obviously is better than in the prior art, thereby the power of bypass diode 3 is increased, and the ultimate guarantee solar photovoltaic assembly is worked lastingly and normally.

Claims (10)

1. solar photovoltaic assembly terminal box, comprise box body (1) with the chamber of soaring (15), cover the lid (2) of joining with box body (1), one group of bypass diode (3) and one group of conductive connection plates (4), one group of conductive connection plates (4) is fixed in the box chamber (11) of box body (1), and space, a serial connection described bypass diode (3) between the adjacent conductive connecting plate (4), it is characterized in that: be concaved with the fin insertion slot (111) that quantity equates with the quantity of conductive connection plates (4) in the box chamber (11) of described box body (1) and at position corresponding to described conductive connection plates (4), be embedded with fin (5) in each fin insertion slot (111), described conductive connection plates (4) contacts with described fin (5); The outer bottom of described box body (1) constitutes ventilation slot (12), and respectively offer in the both sides of the outer bottom of box body (1) one with the extraneous side blow vent (13a) that communicates, side blow vent (13a) communicates with described ventilation slot (12).

2. solar photovoltaic assembly terminal box according to claim 1 is characterized in that in described box chamber (11) and the end that is positioned at the length direction in box chamber offers relief hole (14), and relief hole (14) communicates with described ventilation slot (12).

3. solar photovoltaic assembly terminal box according to claim 1, it is characterized in that offering on the described conductive connection plates (4) conductive connection plates fixing screw hole (41), and go up and offer fin fixing screw hole (51) at position corresponding to described conductive connection plates fixing screw hole (41) at described fin (5), conductive connection plates (4) passes conductive connection plates fixing screw hole (41) by hold-down screw (42) and described fin fixing screw hole (51) is fixed with the box chamber diapire in the box chamber (11) of described box body (1), and the incoming end (43) of each conductive connection plates (4) is stretched over, and described box chamber (11) is outer to correspond in the chamber of soaring (15) of described box body (1), the chamber (15) of soaring is parallel with box chamber (11), and simultaneously by described lid (2) cap seal, and the end (44) that picks out of conductive connection plates (4) is connected with outgoing cable (441).

4. solar photovoltaic assembly terminal box according to claim 1 is characterized in that the global shape of the profile of described fin (5) is the door font, and described fin insertion slot (11) is a door font groove.

5. solar photovoltaic assembly terminal box according to claim 1, it is characterized in that offering on the described conductive connection plates (4) bypass diode pin hole (45), described bypass diode (3) has one first pin (31) and one second pin (32), first pin (31) probes in the bypass diode pin hole (45) on the conductive connection plates (4), second pin (32) then probes in the bypass diode pin hole (45) on another conductive connection plates (4), and first, second pin (31,32) pastes with described fin and touches.

6. solar photovoltaic assembly terminal box according to claim 1 or 5 is characterized in that spacing between described one group of conductive connection plates (4) is that length with described bypass diode (3) adapts.

7. according to claim 1 or 3 described solar photovoltaic assembly terminal boxes, it is characterized in that described box chamber (11) is gone up and respectively be extended with a blend stop plant projection (16) at two ends with the position, boundary in the described chamber of soaring (15), between a pair of blend stop plant projection (16), be plugged with a blend stop (6), the described box chamber (11) and the chamber (15) of soaring separated by blend stop (6).

8. according to claim 1 or 3 or 4 described solar photovoltaic assembly terminal boxes, the material that it is characterized in that described fin (5) is a metal.

9. according to claim 1 or 3 described solar photovoltaic assembly terminal boxes, it is characterized in that described box body (1) is gone up and the two ends of a side that are positioned at the length direction of described box body (1) respectively offer a mortise (17), the two ends of one side of the long side direction of described lid (2) and respectively be extended with a tenon (21) at the position corresponding to described mortise (17), tenon (21) matches with mortise (17).

10. solar photovoltaic assembly terminal box according to claim 5, it is characterized in that described fin (5) is gone up and offer pin groove (52) towards a side of described first pin (31) and second pin (32), described first pin (31) and second pin (32) all are embedded in the pin groove (52).

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