CN2612074Y - Terminal box device for solar battery module connecting - Google Patents

Abstract

A terminal box for the connection of solar battery module comprises a plurality of terminal boards which one end is electrically connected with an output electrode of a solar battery module and another end is electrically connected with an extended cable connected with the solar battery module, and at least one by-pass diode. The utility model is characterized in that the by-pass diode comprises a combine part with layered area and two long sheet metal conductors extended from the combine part along reversal direction, while the whole layered area is arranged with bare connected diodes of diode function portion, the two terminal boards are respectively and electrically connected with the two conductors, and the utility model is filled with insulation resin at least around the bare connected diodes. The utility model has compact structure, while the bare connected diodes can reduce filled resin to reduce cost and contain large current.

Description

Solar battery module terminal for connecting box device

Technical field

The utility model relates to a kind of terminal board device, the adjacent terminal board device that is electrically connected usefulness of particularly a kind of a plurality of solar battery modules.

Background technology

Solar cell is the device that solar energy is directly changed into electric energy.Solar battery cell can only produce the current/voltage of trace; The unit parallel connection of a plurality of solar cells, be composed in series a solar battery module M.Utilize a plurality of solar battery module M such as Figure 12 on roofing, to be configured again, at this moment must be electrically connected between solar battery module M as the family house.For this reason, use the terminal board device B that connects usefulness as shown in figure 13.

Draw positive electrode, negative electrode from the back side of each solar battery module M, be guard electrode, use terminal box device B; Both positive and negative polarity by with being connected of terminal board inner terminal, thereby draw a pair of cable for connection 17,17 by each terminal for connecting box B again, this termination to cable for connection 17,17 is connected to male connector P and female connector J respectively, and P and J are connected with the connection cable of adjacent solar cell module respectively again.

The substrate reverse side periphery use two-sided tape of terminal for connecting box device B etc. is pasted with the solar battery module M back side temporarily.Simultaneously, substrate is provided with and makes the positive electrode of drawing from solar battery module M, the substrate aperture that negative electrode can pass; Here, the inboard of the positive electrode of drawing from solar battery module M by substrate aperture, negative electrode and said external cable for connection 17,17 is electrically connected.Such electric connection part is subjected to terminal for connecting box device B protection and surrounds, and when preventing rainwater etc., outside cable for connection 17,17 is subjected to till the periphery wall that external force affacts terminal for connecting box device B, and above-mentioned electric connection part also is protected.

In terminal for connecting box device B, inject insulating resin for making above-mentioned electric connection part resin-encapsulated.This insulating resin part is passed the substrate aperture of terminal for connecting box device B, arrive the back side of solar battery module M, make above-mentioned positive and negative electrode export department carry out resin-encapsulated, simultaneously insulating resin play make positive and negative electrode and substrate and enter the substrate reverse side and the solar battery module M back side between the effect of gap bonding agent.Therefore, to remember that in the past the interim stickup of two-sided tape changes into permanent bonding for substrate.

Afterwards, terminal for connecting box device B covers capping, this capping fastens with the periphery of snap close state and terminal for connecting box B, or uses bonding material configuration between the circumferential edges top whole week of circumferential edges and the box of lid, again or with screw etc. lid and box edge is closely fixed.

In the above description, outside cable for connection 17,17 is inner directly carries out electric property with positive electrode, the negative electrode of solar battery module M and is connected.Here there are the amboceptor and outside 17 inner connections of cable for connection that are called terminal board.Therefore, have 2 terminal boards 5 as shown in figure 11 in the terminal for connecting box device B, and 25 of terminal boards are connected to bypass diode 18.If any contrary electric loading occasion, 17,17 direct short-circuits of 2 outside cable for connection, promptly solar battery module M is by bypass.

With reference to Figure 11, describe existing terminal for connecting terminal board device in detail.Substrate 1 is the body portion of the terminal for connecting box device that is connected with solar battery module, forms with the insulating resin moulding.The reverse side of substrate 1 can with for example paste the solar battery module back side with two-sided tape; Substrate 1 has the substrate aperture 3 of perforate, and by substrate aperture 3, when substrate 1 was installed at the solar battery module back side, positive electrode, the negative electrode of drawing from the solar battery module back side guided to Fig. 1 and shown the substrate upper face side.

Substrate 1 top 31 on 2 terminal boards 5 are housed, an end of terminal board 5 is outstanding in substrate aperture 3.Positive electrode welding or spot welding welding that jag in the substrate aperture of a terminal board and solar battery module are drawn; Another terminal board 5 is connected equally with the negative electrode of solar battery module.The heart yearn 15 and the pressure contact portion 8 of the terminal board other end and outside cable for connection 17 are electrically connected in the crimping mode.Each the outside cable for connection 17 that is connected with each terminal board 5 is connected with the contiguous solar battery module in each both sides respectively, can continue a plurality of solar battery modules again and connect, can obtain fixed voltage.

When contrary electric loading is arranged,, adopt bypass diode 18 for allowing reverse current flow into 17 short circuits of the opposing party's cable for connection from a side cable for connection 17.Be that an end lead 19 of bypass diode 18 and the bypass diode of a side daughter board 5 weld or the spot welding weldings with connecting portion 7, other end lead 19 is connected with connecting portion 7A equally with the bypass diode of other terminal board 5.

For making terminal board 5 fixing on substrate 1, substrate is provided with 2 projections 10, and the hole 6 of energy terminal board 5 can be chimeric respectively, and the hole 6 of terminal board 5 is the chrysanthemum dentation.This chrysanthemum tooth 6A can allow 10 embeddings of substrate projection that terminal board is not pulled out from projection 10.In a word, shown in Figure 11 b, chrysanthemum tooth 6A tilts in (left side of Figure 11 b) at the upper face side of terminal board 5, and the jut 10 that terminal board 5 is placed on substrate 1 is to pressing down, and it is not interrupted to be pressed into projection 10 in the hole 6 of terminal board 5.

Clamp fixingly at substrate 1 for insulation-coated 16 parts that make 2 outside cable for connection 17, be provided with wire clamp 20.This wire clamp 20 is supplied periphery wall 4, plays the effect that 2 terminal boards 5 and bypass diode 18 besieged spaces are set.2 first cylindrical portions may are arranged on the wire clamp 20; Corresponding with this first cylinder, second cylindrical portions may 25 is set on the cable placement section 32 of substrate 1.Insulation-coated portion the external connection line cable between semicircular cylinder is partly put up and down clamps, and wire clamp 20 carries out welding with the cable placement section 32 of substrate 1 by ultrasonic waves.

Afterwards, use on the figure in accordance with regulations the height in periphery wall 4 of the packaging insulating resin of expression not, the height that terminal board 5 and pressure contact portion 8 are buried injects and solidifies; This resin does not expand the part of stretching out bonding in advance as use two-sided tape etc. by the back side of the perforate 3 arrival solar battery modules of substrate 1.After insulating resin solidified, periphery wall 4 loam cake upper covers were closed terminal board.

The packaged type bypass diode that existing terminal for connecting box device uses; this diode takes up space because protection uses encapsulation partly as the diode function portion of funtion part; institute is taken up space obviously become big; when reverse current became big, taking in thereupon needing to increase necessary bypass diode number in a terminal for connecting box device, difficulty became problem points.

And the existing box-packed connection bypass diode that is changed to of terminal for connecting need be established bypass diode connecting portion 7 shown in Figure 11 on the terminal board, and 7A has increased amount of metal during the manufacturing terminal daughter board and become problem points.

Summary of the invention

The purpose of this utility model is to overcome the defective of above-mentioned prior art, and a kind of novel solar battery module terminal for connecting box device is provided.

The purpose of this utility model is achieved in that a kind of solar battery module terminal for connecting box device, has the electric property of a plurality of ends connection solar battery module to export the terminal board of the electric property of the extension cable connection that is connected with solar battery module with electrode, the other end; And this device is furnished with a bypass diode at least, it is characterized in that bypass diode is to have the joint portion in overlapped zone to reach the elongated lamellar metallic conductor sheet that extends along mutual opposite direction from the junction surface, whole overlapping region disposes the naked diode that connects of diode function portion; On two terminal boards respectively electric property directly connect above-mentioned two conductor pieces, and in the naked surrounding space that connects diode, be marked with insulating resin at least in the terminal for connecting box device.

What be provided with a pair of arranged side by side and terminal for connecting box integrated injection molding in this terminal board device is used to protect and locate the naked protective bulkhead that connects diode.

This is naked to connect the conductor piece that diode oppositely extends each other in conjunction with portion, and at least one side is provided with the elastic force pars contractilis.

This naked wide of two conductor piece joint portions and wide face of terminal board master that connects diode is in same plane or parallel surface.

This is naked, and to connect wide of two conductor piece joint portions of diode vertical with wide of terminal board master.

This terminal board is provided with the right angle folded up portion.

This conductor piece side is provided with outstanding quarter bend folding part.

Positive progressive effect of the present utility model is: the utility model adopts naked two adapters that connect in solar battery module terminal for connecting box device, compares the naked diode low price that connects with the packaged type diode.Therefore, usually use the insulating resin encapsulation in the solar battery module terminal for connecting box device,, do not exert an influence, reach the low-cost effect of terminal for connecting box device for bypass functionality because naked to connect diode also packed.

In addition, the naked funtion part that connects diode takes up space very little.For the increase of reverse current, the naked quantity that connects diode can freely increase, and nakedly connects diode because self capacity is big, even reverse current increases, also can adopt a naked diode that connects.

For the naked diode that connects, take up space with funtion part and to compare, conductor piece takes up space bigger.At first sight, be full of conductor piece on the whole, use naked two adapters that connect thus easily, the naked conductor piece that connects diode extends between terminal board fully, and the connecting portion of using as diode in the prior art on the terminal board can not established yet; The naked conductor piece that connects diode is all transmitted to terminal board by the two sides of diode funtion part by the heat that diode function portion produces, and the diode funtion part is well cooled off, thereby the naked diode that connects can hold big electric current.

Description of drawings

Fig. 1 a is the schematic diagram of the utility model one embodiment; Fig. 1 b is the A profile of Fig. 1 a.

Fig. 2 is Fig. 1 a naked schematic diagram that connects diode of not packing into.

Fig. 3 a1 is the naked diode floor map that connects among Fig. 1 a, and Fig. 3 a2 is the side schematic view of Fig. 3 a1; Fig. 3 b1 is the naked floor map that meets the another embodiment of diode among Fig. 1 a, and Fig. 3 b2 is the side schematic view of Fig. 3 b1; Fig. 3 c1 is the naked floor map that meets another embodiment of diode among Fig. 1 a, and Fig. 3 c2 is the side schematic view of Fig. 3 c1.

Fig. 4 a is the utility model schematic diagram of an embodiment again; Fig. 4 b is the A profile of Fig. 4 a.

Fig. 5 is the schematic diagram of the another embodiment of the utility model.

Fig. 6 a1 is the naked diode floor map that connects among Fig. 5, and Fig. 6 a2 is the side schematic view of Fig. 6 a1; Fig. 6 b1 is the naked floor map that meets the another embodiment of diode among Fig. 5, and Fig. 6 b2 is the side schematic view of Fig. 6 b1; Fig. 6 c1 is the naked floor map that meets another embodiment of diode among Fig. 5, and Fig. 6 c2 is the side schematic view of Fig. 6 c1.

Fig. 7 a is the schematic diagram of another embodiment of the utility model; Fig. 7 b is the A profile of Fig. 7 a.

Fig. 8 a is the wire clamp floor map that the utility model uses; Fig. 8 b is the front elevation of this wire clamp; Fig. 8 c is the side view of this wire clamp; Fig. 8 d is the d-d profile of Fig. 8 b; Fig. 8 e is the e-e profile of Fig. 8 b.

Fig. 9 a is the outward appearance front view after the utility model lid covers; Fig. 9 b is the upward view of Fig. 9 a; Fig. 9 c is the left view of Fig. 9 a.

Figure 10 is the rearview of Fig. 9 a.

Figure 11 a is the schematic diagram of existing terminal board; Figure 11 b is the generalized section of existing terminal board; Figure 11 c is the floor map of existing terminal board.

Figure 12 is solar battery module configuration schematic diagram on roofing.

Figure 13 utilizes the terminal for connecting box device to be electrically connected schematic diagram between solar battery module.

Embodiment

Fig. 1 to Fig. 3 is the present invention the 1st embodiment.

As the feature of terminal for connecting box device of the present invention, adopt as the naked diode 13 that connects of adverse current with bypass diode.The naked diode that connects is such parts: from joint portion, overlapping region 52, along oppositely extending metallic each other, present embodiment adopts elongated laminal 2 conductor pieces 50,51 made of copper, and 52 in joint portion, whole 50.51 overlapping region, configuration diode function portion.

Fig. 3 a shows that conductor piece 50 is rectangle, on location hole 53 is arranged; Conductor piece 51 two ends width have narrow protuberance, one end protuberance and conductor piece 50 are overlapped into the joint portion, 50 of this conductor piece 51 and conductor pieces, and integral body is provided with the diode function 13A of portion, and electric current can only flow to conductor piece 51 from conductor piece 50, and reverse substance can not conducting.

Shown in Figure 2, the core 15 of outside cable for connection 17, by with after pressure contact portion 8 crimping of terminal board 5 are connected, the jut 10 that stretches out from substrate penetrates the hole 6 of terminal board 5, chrysanthemum shape seat 11 links closely with the projection 10 of substrate 1 afterwards, makes terminal board 5 fixing on substrate 1; And for insulation-coated 16 of outside cable for connection 17 is fixedly secured, 1 of the wire clamp 20 of insulating resin system and substrate are used the ultrasonic waves welding, thereby terminal board 5 is substantive fixing with substrate 1.After terminal board 5 and substrate 1 are fixed, carry out the naked welding that connects 2 conductor pieces 50,51 of diode 13 on 2 terminal boards 5.

For making the naked service orientation that connects diode 13 not reverse, only take in the narrow protuberance of conductor piece 51 in the wall 56A of location, and conductor piece 50 is not contained, location wall 56C can just take in conductor piece 50.The hole 53 of conductor piece 50 and the outstanding pin 55 of substrate make naked the connect diode located lateral horizontal with terminal board 5, and be fixing between a pair of protective bulkhead 56B of 2 conductor pieces, 50,51 joint portions 52.And for making outstanding pin 55 from substrate 1, arrive and pass conductor piece 50 by terminal board 5, terminal board 5 is provided with the hole.

Therefore carry out the substance contact as naked conductor piece 50,51 to the terminal board 5,5 that connects diode of figure.Here the scolding tin that suitably drips and melt, naked two conductor pieces that connect 2 utmost point pipes carry out direct electric property with each terminal board and are connected.

Secondly, encapsulate with insulating resin in the terminal for connecting box device.Here, the insulating resin encapsulation is that the present invention is necessary.For the joint portion 52 that prevents the naked conductor piece 50,51 that connects diode 13 takes place nakedly to connect that to produce conductor piece 50,51 short circuits be that the diode function 13A of portion is by bypass, at least in the joint portion 52 around must carry out resin-encapsulated, and require the inside of the internal perisporium 9 of terminal for connecting box device all to use resin-encapsulated.

As the naked title that connects diode, do not possess the naked shape diode function 13A of portion of encapsulation, easily damaged by external impact, promptly conductor piece 50,51 easily 52 is peeled off from the junction surface.Among the present invention; for making the clamping apparatus head that uses in the terminal for connecting box device packing engineering (as solder horn, potting resin with encapsulating head, screwdriver etc.) not impact the naked diode function 13A of portion that connects mistakenly, the both sides of joint portion 52 are provided with the protective bulkhead 56B that abundant height is arranged with substrate 1 one resin forming.

It shown in Fig. 3 b and Fig. 3 c naked other form that connects diode.Here, the naked conductor piece 50,51 that connects diode for make terminal board 5,5 near again away from the time, the suffered stress of diode function portion obtains buffering and is provided with elastic force pars contractilis 54.Fig. 3 b shows on the both sides conductor piece 50,51 and is provided with elastic force pars contractilis 54 that Fig. 3 c shows that a side conductor sheet 50 is provided with elastic force pars contractilis 54.

As shown in Figure 2, this is that the naked diode that connects can suitably be assembled on 2 terminal boards 5,5, and is aforementioned clear and definite.Even but also having the naked diode that connects to be separated with when how much changing 5,5 of two terminal boards, be not stripped from the joint portion 52 of conductor portion 50,51 yet.

Fig. 4 is the present invention the 2nd embodiment.For making interest of clarity, only to stating with the foregoing description 1 discrepancy.

The naked diode 13 that connects of legend state is made relative arranged perpendicular with the primary flat of terminal board 5; for the naked conductor piece 50,51 that connects diode 13 is welded on terminal board 5,5; a terminal board part is provided with right angle folded up portion 5A; the naked junction surface 52 that connects the conductor piece 50,51 of diode 13; the diode function 13A of portion is promptly arranged; between a pair of protective bulkhead 56B, insert; conductor piece 50,51 substrate 1 extend outstanding pin 55,55 with on insert between the note right angle folded up portion 5A, conductor piece 50,51 is welded on right angle folded up portion 5A easily.

Be pressed into the junction surface 52 of conductor piece 50,51 between a pair of protective bulkhead 56B, 56B aptly.So, even the junction surface of conductor piece 50,51 52 is owing to the distortion such as variable in distance of 5,5 of terminal boards, conductor piece 50,51 can be kept with electric the contact also between the diode function 13A of portion, also need not state simultaneously and use the naked diode that connects of form shown in Fig. 3 b and Fig. 3 c disposing with terminal board 5,5 primary flat upright positions among Fig. 4.

Fig. 5, Fig. 6 are the present invention the 3rd embodiment.For making interest of clarity, only to stating with above-mentioned the 2nd embodiment discrepancy.

In the present embodiment, for make with terminal board 5,5 plumbnesss under welding conductors sheet 50,51, be provided with outstanding quarter bend folding part 50A, 51A in conductor piece 50,51 each end side.Fig. 6 b and Fig. 6 c are the naked diodes that connects that is provided with elastic force pars contractilis 54 with Fig. 3 b and Fig. 3 c equally.

Fig. 7 is the present invention the 4th embodiment.For making interest of clarity, only to stating with previous embodiment 1 discrepancy.

Shown in Fig. 7 b, protective bulkhead 58 is supported by supporting surface post 57, below protective bulkhead 58, connects curved surface 59 connections by drawing.Under the configuration of correct direction, the naked conductor piece that connects diode 13 50,51 joint portions 52 are inserted protective bulkheads 58 and are connect below the curved surface 59 drawing, and the hole 53 of conductor piece 50 is through on the outstanding pin 55 of substrate, and the protuberance of conductor piece 51 inserts between the wall 56A of location.

In the above-described embodiments, as Fig. 8, Fig. 9 and Figure 10 shows that its same section, existing to its with existing implement shape (Figure 11) further discrepancy state.

Among Fig. 8,20 is wire clamp (body), and 21 is semicircular cylinder portion, and 22 are prominent bar, the portion of supplying of 23 terminal board periphery walls 4, and 24A, 24B, 24C are Embedded Division.

Among Fig. 9,4 periphery walls, 12 is lid, 17 is external connection cable, 15 is core, and 16 is insulation-coated portion, and 20 is wire clamp, 21 is first cylindrical portion, 25 is second cylindrical portion, and 22 are the prominent bar of first cylindrical portion, and 26 are the prominent bar of second cylindrical portion, 23 portions of supplying for periphery wall 4 and wire clamp 20 periphery walls, 32 is the wire clamp junction surface.

Among Figure 10,3 is substrate aperture, and 30 is reverse side, the opening that 58A uses for the injection mo(u)lding portion material of protective bulkhead 58 among Fig. 7.

Among Fig. 8 to Figure 10, particularly the discrepancy with product always shown in Figure 11 is the wire clamp part.The common wire clamp 20 that uses in the various embodiments of the present invention is being provided with Embedded Division 24A, 24B, 24C with product differentiation always.For taking in Embedded Division 24A, 24B, 24C, on the wire clamp joint portion 32 of substrate 1, be provided with corresponding recess (not expression on the figure), like this, Embedded Division 24A, 24B, 24C make wire clamp 20 correctly chimeric with substrate 1.Take in Embedded Division 24A, 24B, 24C when joint portion 32 is provided with recess, the back side of substrate 1 30 makes tabular surface as Figure 10, and the contact-making surface with the back side of solar pond electroplax is increased; And in the box device of terminal for connecting always shown in Figure 11, quite be provided with recess (not expression on the figure) in the back side in zone with wire clamp joint portion 32, and make the consumption saving of box moulding with insulating resin, easily loosening thereby the back side contact force of box and solar panel weakens; And the design of corresponding wire clamp 20 shown in Fig. 1, Fig. 4 and Fig. 7, is added periphery wall 4 on the internal perisporium 9, makes the face shaping of terminal for connecting box device succinct merely.

Claims (9)

1, a kind of solar battery module terminal for connecting box device has the electric property of a plurality of ends connection solar battery module to export the terminal board of the electric property of the extension cable connection that is connected with solar battery module with electrode, the other end; And this device is furnished with a bypass diode at least, it is characterized in that bypass diode is to have the joint portion in overlapped zone to reach the elongated lamellar metallic conductor sheet that extends along mutual opposite direction from the junction surface, whole overlapping region disposes the naked diode that connects of diode function portion; On two terminal boards respectively electric property directly connect above-mentioned two conductor pieces, and in the naked surrounding space that connects diode, be marked with insulating resin at least in the terminal for connecting box device.

2, solar battery module terminal for connecting box device as claimed in claim 1, what it is characterized in that being provided with in it a pair of arranged side by side and terminal for connecting box integrated injection molding is used to protect and locate the naked protective bulkhead that connects diode.

3, solar battery module terminal for connecting box device as claimed in claim 1 or 2 is characterized in that the naked conductor piece that diode oppositely extends each other in conjunction with portion that connects, and at least one side is provided with the elastic force pars contractilis.

4, solar battery module terminal for connecting box device as claimed in claim 1 or 2 is characterized in that naked wide of two conductor piece joint portions and the wide face of terminal board master that connects diode is in same plane or parallel surface.

5, solar battery module terminal for connecting box device as claimed in claim 3 is characterized in that naked wide of two conductor piece joint portions and the wide face of terminal board master that connects diode is in same plane or parallel surface.

6, solar battery module terminal for connecting box device as claimed in claim 1 or 2 is characterized in that naked wide of two conductor piece joint portions that connect diode are vertical with wide of terminal board master.

7, solar battery module terminal for connecting box device as claimed in claim 3 is characterized in that naked wide of two conductor piece joint portions that connect diode are vertical with wide of terminal board master.

8, solar battery module terminal for connecting box device as claimed in claim 6 is characterized in that terminal board is provided with the right angle folded up portion.

9, solar battery module terminal for connecting box device as claimed in claim 6 is characterized in that the conductor piece side is provided with outstanding quarter bend folding part.

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