CN205490391U - Modularization solar junction box - Google Patents

Abstract

The utility model relates to a modularization solar junction box, including lid and terminal block, the terminal block is formed with the diode unit integration plastic package who connects adjacent terminal by a plurality of terminals that set up side by side, and lieing in, two terminals in the outside are used for the connecting cable respectively, the terminal block conduct the backplate and the removable fixed connection of lid of lid, form the cavity that is used for filled silica between lid and the terminal block. This modularization solar junction box assembly is convenient, and thermal diffusivity and leakproofness are all better.

Description

A kind of modular solar power rosette

Technical field

This utility model relates to the solar junction box of a kind of solar-energy photo-voltaic cell, belongs to field of photovoltaic technology.

Background technology

Solar junction box is the adapter between solar cell array and the solar charging electric control device that solar module is constituted, and has provided the user the combination connection scheme of solar panel.General solar junction box is made up of base, lid and the terminal between base and lid, is provided with diode between adjacent terminal.Solar junction box operationally diode produces substantial amounts of heat, if can not dispel the heat in time, can directly influence the performance of solar junction box.It addition, the working environment of solar junction box is more severe, sealing is also required that high.But, the thermal diffusivity of existing solar junction box and sealing property all can not meet requirement.

Summary of the invention

It is convenient that the technical problems to be solved in the utility model is to provide a kind of assembling, thermal diffusivity and sealing all preferably modular solar power rosette.

In order to solve above-mentioned technical problem, this utility model provides a kind of modular solar power rosette, including lid and terminal board, described terminal board is formed by the diode integrated plastic encapsulation of multiple terminals being arranged side by side and connection terminals of adjacent, being positioned at outermost two terminals to be respectively used to connect cable, described terminal board fixing is connected as the backboard of described lid is removable with lid；The cavity for filling gel is formed between described lid and terminal board.

Above-mentioned terminal board is fixed in described lid, and the back side of the encapsulation part of described terminal board is plane, and at the back edge of described lid, the back side with described encapsulation part flushes.

Above-mentioned terminal board is fixed in lid, and it is 1.5mm to 3.5mm and the through slot traversing the encapsulation part back side that the back side of the encapsulation part of described terminal board offers the degree of depth.

The edge of the encapsulation part of above-mentioned terminal board has the breach of semicircular in shape, described lid offers the groove of the semicircular in shape of the position with breach and mating shapes, described breach and groove and constitutes glueing channel.

The busbar fixed part stretching out encapsulation part it is equipped with on each described terminal；The described cable crimp head being positioned at the encapsulation part being additionally provided with external part daughter board on outermost two terminals, described cable is crimped in described cable crimp head；Said two cable crimp head vertically extends from the bottom of respective terminal；Or, said two cable crimp head overhangs from the bottom of respective terminal is oblique, is distributed in splayed；Described cavity is separated into the first cavity and the second cavity, and the encapsulation part of described terminal board is positioned at described first cavity, and described busbar fixed position is in described second cavity；Offering the opening being connected with described second cavity on described lid, described opening is provided with cover plate.

Above-mentioned modular solar power rosette also includes line card；The cable trough for accommodating described cable it is provided with in described lid；One end of described cable trough is connected with described cavity, and the other end of described cable trough extends to the edge of described lid；Described line card is fixedly connected in described cable trough by ultrasonic bonding, and is positioned at the edge of described lid；Described cable clamping is between described line card and described lid；Described cable is positioned at described cable trough with the junction of described terminal；For filling gel in described cable trough.

Above-mentioned line card is provided with U-type groove, and the width of described U-type groove matches with the external diameter of cable；Being provided with the first circumferentially disposed arc convex portion along described cable in described U-type groove, described first arc convex portion is provided with the first salient point；Being provided with in described cable trough and the step surface that the two ends of described U-type groove match and the second arc convex portion corresponding with the shape in described first arc convex portion and position, described second arc convex portion is provided with the second salient point；Described first arc convex portion and described second arc convex portion abut against with described cable, described first salient point and the second salient point and cable interference fit；The end, two ends of described U-type groove and described line card are provided with fusion bar towards the edge outside described lid.

At least two, above-mentioned first arc convex portion, and interval setting；At least one of which and described cable interference fit；At least two, described second arc convex portion, and interval setting, at least one of which and described cable interference fit.

The both sides of above-mentioned line card are provided with spaced stopper slot, are provided with the limited block coordinated with described stopper slot grafting in described cable trough.

Above-mentioned diode includes positive pole chip, negative pole chip and connects sheet；Described positive pole chip is attached on one of them adjacent terminal, and described negative pole chip is attached on another adjacent terminal, and described positive pole chip is connected by being connected sheet with described negative pole chip.

Above-mentioned modular solar power rosette also includes described cable, and one end that this cable stretches out outside described lid is provided with adapter.

Modular solar power rosette described in the utility model, by using the terminal board replacement base of integrated plastic encapsulation as backboard, improves heat dispersion；Sealing is improve by filling gel in cavity；And also decrease the spare and accessory parts quantity of rosette, and simplifying the structure of rosette so that it is more convenient to assemble, production efficiency is high.

Accompanying drawing explanation

Below in conjunction with the accompanying drawings the solar junction box described in this utility model embodiment is described further.

Fig. 1 is the perspective view of the solar junction box in embodiment；

Fig. 2 is perspective view when observing from the back side of the solar junction box in Fig. 1；

Fig. 3 is the stereo decomposing structural representation of the solar junction box in Fig. 2；

Fig. 4 is the structural representation that the terminal board in Fig. 3 is observed from front；

Fig. 5 is the internal structure schematic diagram of the terminal board in Fig. 4；

Fig. 6 is the structural representation of the lid in Fig. 3；

Fig. 7 is the close-up schematic view at the A of the lid in Fig. 6；

Fig. 8 is the structural representation of the line card in Fig. 3；

Fig. 9 is the perspective view of the solar junction box of the another kind of shape in embodiment；

Figure 10 is the perspective view of the terminal board in the solar junction box of Fig. 9.

The labelling of above-mentioned accompanying drawing is as follows:

Lid 1, the first cavity 11, the second cavity 12, cable trough 13, step surface 13-1, the second arc convex portion 13-2, the second salient point 13-2-1, limited block 13-4, groove 14, opening 15,

Terminal board 2, terminal 21, busbar fixed part 21-1, cable crimp head 21-2, positive pole chip 22, negative pole chip 23, connection sheet 24, encapsulation part 25, breach 25-1, through slot 25-2,

Cable 3,

Line card 4, U-type groove 41, the first arc convex portion 42, the first salient point 42-1, stopper slot 44, fuse bar 45,

Stopper slot 41, cover plate 5, adapter 6.

Detailed description of the invention

Seeing Fig. 1 and Fig. 2, the modular solar power rosette described in the present embodiment includes: lid 1 and terminal board 2.Terminal board 2 is fixed in lid 1 as the backboard of lid 1 so that assemble convenient.Forming the cavity for filling gel between lid 1 and terminal board 2, when being full of silica gel in the cavity of lid 1, terminal board 2 can be by sealing protection well.Can comprise cable 3 and can not also comprise cable 3, one end of each cable 3 is plugged on the terminal board 2 in lid 1, and the other end stretches out outside lid 1 and is provided with adapter 6, for connecting required miscellaneous part.

Seeing Fig. 4 and Fig. 5, terminal board 2 is formed by epoxy molding material packaging technology integrative packaging by three diodes of four copper terminals being arranged side by side 21 and connection terminals of adjacent 21.Terminal board 2 includes terminal 21, diode and encapsulation part 25.Solar junction box is connected with solaode by busbar in use, and in order to terminal board 2 is more convenient with the connection of busbar and cable 3, each terminal 21 is equipped with the busbar fixed part 21-1 stretching out encapsulation part 25.Being positioned on outermost two terminals and be additionally provided with cable crimp head 21-2 stretching out encapsulation part 25, cable 3 is crimped in cable crimp head 21-2.

Seeing Fig. 1 and Fig. 4, two cable crimp head 21-2 can vertically extend from the bottom of respective terminal 21, thus cable 3 also vertically extends from the bottom of lid 1.Or, see Fig. 9 and Figure 10, two cable crimp head 21-2 can overhang from the bottom of respective terminal 21 is oblique, is distributed in splayed, thus cable 3 also vertically extends from the bottom of lid 1, be distributed in splayed.Cable 3 is distributed when mounted in splayed so that cable is difficult to impaired because of bending.

Seeing Fig. 5, so that the connection of the diode in terminal board 2 is more firm, be hardly damaged, each diode includes positive pole chip (diode P pole piece sheet) 22, negative pole chip (diode N pole piece sheet) 23 and connects sheet 24.Positive pole chip 22 is attached on one of them adjacent terminal 21, and negative pole chip 23 is attached on another adjacent terminal 21, and positive pole chip 22 is connected by being connected sheet 24 with negative pole chip 23.

Seeing Fig. 3, so that produce more flexible with encapsulating in later stage installation process, cavity is divided into the first cavity 11 and the second cavity 12.The encapsulation part 25 of terminal board 2 is positioned at the first cavity 11.Busbar fixed part 21-1 is positioned at the second cavity 22.Offering the opening 15 being connected with the second cavity 12 on lid 1, opening 15 is provided with cover plate 5.Encapsulation part 25 and the busbar fixed part 21-1 of terminal board 2 are separately positioned in two encapsulating spaces the most isolated, the most individually the first cavity 11 can be carried out sealant pouring and sealing when producing solar junction box, the later stage can carry out sealant pouring and sealing to the second cavity 12 the most again when installing busbar.Making solar junction box have good insulating properties and resistance to ag(e)ing, good sealing effect, power is up to 400W, and water proof and dust proof grade is up to IP68, durable in use.

Seeing Fig. 2 and Fig. 3, the back side of the encapsulation part 25 of terminal board 2 is plane.At the back edge of lid 1, the back side of encapsulation part 25 with terminal board 2 flushes, so that the back side of solar junction box is overall in plane, the back side is smooth, can the most airtight be bonded on the backboard of photovoltaic module, better tightness.And, this solar junction box uses the terminal board 2 replacement base of integrated plastic encapsulation to be directly anchored to the back side of lid 1 as backboard, when solar junction box is fixed on the backboard of photovoltaic module, terminal board 2 directly contacts with backboard, heat conduction is more direct, effectively improve the radiating effect of solar junction box so that solar junction box work is more stable.

Or, so that the back side of the higher solar junction box of heat does not directly contact with the backboard of photovoltaic module, prevent photovoltaic module impaired because of high temperature, described terminal board 2 can also be made to be fixed in lid, and make at the back edge of described lid 1 the high 1.5mm to 3.5mm in the back side of encapsulation part 25 than terminal board 2.Seeing Figure 10, specifically, it is 2mm and the through slot 25-2 that traverses encapsulation part 25 back side that the such as back side of encapsulation part 25 offers the degree of depth.

So that encapsulating is convenient in cavity, the edge of encapsulation part 25 has the breach 25-1 of semicircular in shape, and lid 1 offers the groove 14 of the semicircular in shape of the position with breach 25-1 and mating shapes.Breach 25-1 and groove 14 constitute glueing channel.If directly offering single glueing channel on terminal board 2 or lid 1, the moulding process of terminal board 2 and lid 1 can be made more to bother.And by respectively opening half glueing channel on terminal board 2 and lid 1, the molding also making terminal board 2 and lid 1 while ensureing the convenience of encapsulating is relatively simple, it is ensured that yield rate.

Still seeing Fig. 2 and Fig. 3, so that the fixed effect of cable, sealing effectiveness are more preferable, this modular solar power rosette can further include line card 4, is additionally provided with the cable trough 13 for accommodating cable 3 in lid 1.One end of cable trough 13 is connected with cavity, and the other end of cable trough 13 extends to the edge of lid 1.Conventional solar junction box grips cable by connecting and fixing lid 1 together and base, and fixed effect is general, and sealing effectiveness is the best.And in present embodiment, when terminal board 2 is as the backboard of lid 1, lid 1 is offered cable trough 13, single line card 4 is set in cable trough 13 in order to grip cable 3, and filling gel in cable trough 13, can ensure that aqueous vapor will not enter in the cavity of lid 1 from the gap between line card 4 and lid 1, thus be effectively improved the sealing of solar junction box.It addition, cable trough 13 has reserved working place, so that cable 3 can be crimped by automation equipment with terminal 21 to cable crimp head 21-2.

Lid 1 and line card 4 can be the mouldings of polyphenylene oxide material, and line card 4 can be fixedly connected in the cable trough 13 of lid 1 by ultrasonic bonding, and be positioned at the edge of lid 1.Lid 1 and line card 4 are all that polyphenylene oxide material is fixed together by ultrasonic bonding, easy to assembly, and bonding strength is high, are more beneficial for improving sealing and the ruggedness of rosette.

Seeing Fig. 6 to Fig. 8, in order to preferably fix cable 3 so that cable 3 cannot rotate, line card 4 is provided with U-type groove 41, and the width of U-type groove 41 matches with the external diameter of cable 3.The the first circumferentially disposed arc convex portion 42 along cable 3 it is provided with in U-type groove 41.First arc convex portion 42 can have two or more and interval to arrange, and the first arc convex portion 42 in lid 1 is provided with the first salient point 42-1, the first salient point 42-1 and cable 3 interference fit.The first salient point 42-1 is not set, himself and cable 3 interference fit in the first arc convex portion 42 outside lid 1.It is provided with in cable trough 13 and the step surface 13-1 that the two ends of U-type groove 41 match and the second arc convex portion 13-2 corresponding with the shape in the first arc convex portion 42 and position.This second arc convex portion 13-2 at least two, and interval setting, the second arc convex portion 13-2 in lid 1 is provided with the second salient point 13-2-1, the second salient point 13-2-1 and cable 3 interference fit.The second salient point 13-2-1 is not set, himself and cable 3 interference fit on the second arc convex portion 13-2 outside lid 1.First arc convex portion 42 and the second arc convex portion 13-2 abuts against with cable 3.The end, two ends of U-type groove 41 and line card 4 are provided with fusion bar 45 towards the edge outside lid 1.During ultrasonic bonding, the soldering tip of altofrequency vibration is under modest pressure so that fusion bar 45 and cable trough 13 produce frictional heat with the composition surface of line card 4 and moment melts and engages, and weld strength can match in excellence or beauty with body.

Match by U-type groove 41 can cable 3 be carried out spacing with cable trough 13, the insulating barrier of salient point extruded cable 3 outer layer in arc convex portion, bring it about certain deformation, relying on pressure and frictional force that cable cannot be rotated, the vacancy on both sides, arc convex portion also provides space for cable 3 deformation simultaneously.By arranging multiple arc convex portion, the arc convex portion being provided with salient point passes through salient point and cable 3 interference fit, and cable deformation is bigger；The arc convex portion not setting salient point passes through self and cable 3 interference fit, and cable 3 deformation is less, and this progressive spacing the most preferably fixed cable 3 that is conducive to, restriction cable 3 rotates.

See that Fig. 6 and Fig. 7, the both sides of line card 4 are provided with spaced stopper slot 44, in cable trough 13, be provided with the limited block 13-4 coordinated with stopper slot 44 grafting.The limited block 13-4 cooperated by setting in line card 4 and cable trough 13 and stopper slot 44 can ensure that the precision of assembling, the side that limited block 13-4 makes line card 4 contact with cable trough 13 simultaneously forms multiple step, is conducive to improving the sealing of solar junction box.

The modular solar power rosette of the present embodiment is when assembling, cover plate 5 covers on lid 1 opening 15, first terminal board 2 is fixed in lid 1, again cable 3 is crimped in cable crimp head 21-2, then line card 4 is fixed in cable trough 13 by ultrasonic bonding, then pass through breach 25-1 and glueing channel filling gel, filling gel in cable trough 13 so that rosette becomes semi-finished product in the first cavity 11 of groove 14 composition.After semi-finished product are supplied to client, client opens cover plate 5, is fixedly connected on by busbar on busbar fixed part 21-1, then by opening 15 filling gel in the second cavity 12, is fitted on the backboard of photovoltaic module at the back edge of lid 1.

Modular solar power rosette described in present embodiment uses the terminal board 2 replacement base of integrated plastic encapsulation as backboard, solar junction box is made up of after lid 1 encapsulating terminal board 2, encapsulation part 25 good heat conductivity of terminal board 2, the heat that terminal board 2 produces is conducted to lid 1 by silica gel, so that the heat of diode is dissipated by point and becomes face and dissipate, heat radiation is more uniformly, directly.This modular design decreases the spare and accessory parts quantity of rosette, simplifies the structure of rosette so that it is more convenient to assemble, and production efficiency is high.

Obviously, above-mentioned embodiment is only for clearly demonstrating this utility model embodiment example, and is not the restriction to this utility model embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And these belong to obvious change or variation that spirit of the present utility model extended out still in protection domain of the present utility model among.

Claims (10)

1. a modular solar power rosette, it is characterised in that: include lid (1) and terminal board (2)；

Described terminal board (2) is formed by the diode integrated plastic encapsulation of multiple terminals (21) being arranged side by side and connection terminals of adjacent (21), is positioned at outermost two terminals (21) and is respectively used to connect cable (3)；

Described terminal board (2) fixing is connected as the backboard of described lid (1) is removable with lid (1)；

The cavity for filling gel is formed between described lid (1) and terminal board (2).

A kind of modular solar power rosette the most according to claim 1, it is characterized in that: described terminal board (2) is fixed in described lid (1), the back side of the encapsulation part (25) of described terminal board (2) is plane, and at the back edge of described lid (1), the back side with described encapsulation part (25) flushes.

A kind of modular solar power rosette the most according to claim 1, it is characterized in that: described terminal board (2) is fixed in lid (1), and the back side of the encapsulation part (25) of described terminal board (2) offers the degree of depth and is 1.5mm to 3.5mm and traverses the through slot (25-2) at encapsulation part (25) back side.

A kind of modular solar power rosette the most according to claim 1, it is characterized in that: the edge of the encapsulation part (25) of described terminal board (2) has the breach (25-1) of semicircular in shape, offer the groove (14) of the semicircular in shape of the position with breach (25-1) and mating shapes, described breach (25-1) and groove (14) on described lid (1) and constitute glueing channel.

A kind of modular solar power rosette the most according to claim 1, it is characterised in that: it is equipped with the busbar fixed part (21-1) of the encapsulation part (25) of external part daughter board (2) on each described terminal (21)；

Described being positioned on outermost two terminals (21) is additionally provided with the cable crimp head (21-2) stretching out encapsulation part (25), and described cable (3) is crimped in described cable crimp head (21-2)；

Said two cable crimp head (21-2) vertically extends from the bottom of respective terminal (21)；Or, said two cable crimp head (21-2) overhangs from the bottom of respective terminal (21) is oblique, is distributed in splayed；

Described cavity is separated into the first cavity (11) and the second cavity (12), and the encapsulation part (25) of described terminal board (2) is positioned at described first cavity (11), and described busbar fixed part (21-1) is positioned at described second cavity (22)；

Offering the opening (15) being connected with described second cavity (12) on described lid (1), described opening (15) is provided with cover plate (5).

6. according to a kind of modular solar power rosette according to any one of Claims 1 to 5, it is characterised in that: also include line card (4)；

The cable trough (13) for accommodating described cable (3) it is provided with in described lid (1)；One end of described cable trough (13) is connected with described cavity, and the other end of described cable trough (13) extends to the edge of described lid (1)；Described line card (4) is fixedly connected in described cable trough (13) by ultrasonic bonding, and is positioned at the edge of described lid (1)；

Described cable (3) is clamped between described line card (4) and described lid (1)；

Described cable (3) is positioned at described cable trough (13) with the junction of described terminal (21)；

For filling gel in described cable trough (13)；

Described line card (4) is provided with U-type groove (41), and the width of described U-type groove (41) matches with the external diameter of cable (3)；Being provided with the first circumferentially disposed arc convex portion (42) along described cable (3) in described U-type groove (41), described first arc convex portion (42) is provided with the first salient point (42-1)；

Being provided with in described cable trough (13) and the step surface (13-1) that the two ends of described U-type groove (41) match and the second arc convex portion (13-2) corresponding with the shape in described first arc convex portion (42) and position, described second arc convex portion (13-2) is provided with the second salient point (13-2-1)；

Described first arc convex portion (42) and described second arc convex portion (13-2) abut against with described cable (3), described first salient point (42-1) and the second salient point (13-2-1) and cable (3) interference fit；

The end, two ends of described U-type groove (41) and described line card (4) are provided with fusion bar (45) towards the outer edge of described lid (1).

A kind of modular solar power rosette the most according to claim 6, it is characterised in that: at least two, described first arc convex portion (42), and interval setting；At least one of which and described cable (3) interference fit；

At least two, described second arc convex portion (13-2), and interval setting, at least one of which and described cable (3) interference fit.

A kind of modular solar power rosette the most according to claim 6, it is characterized in that: the both sides of described line card (4) are provided with spaced stopper slot (44), in described cable trough (13), be provided with the limited block (13-4) coordinated with described stopper slot (44) grafting.

9. according to a kind of modular solar power rosette according to any one of Claims 1 to 5, it is characterised in that: described diode includes positive pole chip (22), negative pole chip (23) and connects sheet (24)；Described positive pole chip (22) is attached on adjacent one of them terminal (21), and described negative pole chip (23) is attached on adjacent another terminal (21), and described positive pole chip (22) is connected by being connected sheet (24) with described negative pole chip (23).

10. according to a kind of modular solar power rosette according to any one of Claims 1 to 5, it is characterised in that: also include that described cable (3), this cable (3) stretch out described lid (1) one end outward and be provided with adapter (6).