EP2115838A1

EP2115838A1 - Junction box and connecting box for a solar module

Info

Publication number: EP2115838A1
Application number: EP08707533A
Authority: EP
Inventors: Stefan Giefers
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2007-02-05
Filing date: 2008-02-04
Publication date: 2009-11-11
Also published as: EP2118977A1; ES2385112T3; US20100173511A1; CN101606293B; EP2118977B1; JP2010518614A; CN101606293A; WO2008095669A1; US8366471B2; WO2008095670A1; DK2118977T3; WO2008095670A8; JP5441716B2

Abstract

The invention relates to a junction box and connecting box for a photovoltaic solar module having flexible flat conductor strips that protrude from the surface of the solar module. The junction box and connecting box comprises, on its side facing the solar module when assembled, an introduction opening for at least one flexible flat conductor strip of the solar module and a housing for installing on the solar module and a junction device that is arranged in the housing for the flexible flat conductor strip. Said junction device comprises a deviation lever and an electric contact clip that are actuated when the box is installed on the solar module in order to bend the flat conductor strip and to establish contact therewith.

Description

Connection and connection box for a solar module

FIELD OF THE INVENTION The invention relates to a connection and connection box for a photovoltaic solar module with flexible flat conductor strips which protrude from the surface of the solar module and to a method for connecting a connection and connection box to a solar module.

Background of the invention

The production of photovoltaic solar modules has experienced a veritable boom in recent years, partly because of the increased demand for environmentally friendly energy production. The direct conversion of sunlight into electricity by means of photovoltaic solar modules is completely emission-free and involves almost no risks for humans and the environment. Therefore, recently, for example, in new buildings whole roofs with solar modules occupied and even

Built "solar power plants". Due to the technical development of photovoltaics, the use of solar modules is more and more in less favorable latitudes, such. As Central Europe or North America, increasingly efficient, so that in particular in these regions, there is a great demand. Due to the continuous increase in efficiency of the solar modules due to technical advancement on the one hand and increasing energy production costs with other energy sources, such as fossil fuels or nuclear energy, making photovoltaic power generation more and more competitive. It can be seen that the achievement of solar modules in economic competition with other energy sources depends on the costs of manufacturing and assembling the solar modules.

Solar modules typically consist of a plurality of solar cells based on semiconductors, which are interconnected to form large-area solar panels. A typical solar module has on the side facing the sun a glass pane and on the back of a transparent plastic layer in which the solar cells are embedded. The back of the solar module is typically with a weather-resistant plastic composite film, z. As polyvinyl fluoride and polyester, laminated. The monocrystalline or polycrystalline solar cells are electrically interconnected by soldering strips. Typically, the solar module is still installed in a metal profile frame for attachment and stiffening of the composite. A solar module is therefore basically a planar structure, similar to a thick glass pane.

Typically, solar modules on the back facing away from the sun thin flexible conductor strips, usually made of copper, which protrude vertically from the back of the solar module. These flexible flat conductor strips are very sensitive and therefore difficult to contact. In addition, due to the disc-like shape of the solar module, a mechanical attack to attach an electrical connector is also difficult. Therefore, a special type of electrical connector for such solar modules has developed, which is referred to as a junction box or junction box. The connection and junction box is typically glued to the rear surface of the solar module and has in the interior electrical connection means for contacting the flexible Flachl-eiterbänder of the solar module. Further, the connection and connection box optionally has a device for connecting an electrical connection cable, which is connected by means of the connection and junction box with the flexible flat conductor band of the solar module to dissipate the electric power generated by the solar module.

Furthermore, typically several solar modules are in

Series circuit operated, being connected in anti-parallel to each module, a so-called bypass or freewheeling diode. The freewheeling diode is connected to the electrical connection device within the connection and connection box. Without a bypass diode, if a module is shaded or does not provide power due to a defect, this module would reduce or even damage the performance of the series-connected solar modules. The bypass diode prevents this because the current flows through the diode and is maintained.

It can be seen that due to the mechanical conditions, in particular the shape of the solar module and the sensitivity of the flexible flat conductor strips, a number of difficulties for the construction of the connection and junction boxes occur.

So far, junction boxes are known, which are placed over the flexible flat conductor strips. Here, the flexible flat conductor band is bent by hand and contacted by means of a terminal or a solder joint. In a further operation then the junction box is closed. Such connecting devices or junction boxes are described in DE 10 2005 025 632 A1 and DE 20 2005 018 884 Ul described. It can be seen that the installation of such Verbindungsvorrichtüngrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrengrenngrengrengrengrengrengren bzw.

From DE 103 58 140 B4 an electrical connection and connection box for a solar cell module is known, which has on its underside a guide device in which the thin conductor strip is guided with little play in the transverse direction to kinking or folding the conductor strips during insertion into to avoid the clamping device. The disadvantage here is that the conductor strip must be threaded into the narrow guide means and the clamping force of the clamping device should still be relatively low to the thin

To be able to insert conductor strip into the clamping device.

After all, there is room for improvement in this respect due to the high pressure of innovation in the production of solar modules.

General description of the invention

It is therefore an object of the present invention to provide a junction box for a photovoltaic solar module which is automated, e.g. with a robot, which can be connected to the solar module and provides a high contact reliability and longevity.

A further object of the invention is to provide such a connection and junction box, which has a certain tolerance with respect to the lateral positioning on the solar module.

Another object of the invention is to provide such a connection and junction box, which the Disadvantages of the prior art avoids or at least diminished and inexpensive to manufacture and assemble.

According to the invention, a connecting and connection box for a photovoltaic solar module with flexible flat conductor strips which protrude from the surface of the solar module is provided. The connection and connection box has an insertion opening for at least one flexible flat conductor band of the solar module on its side facing the solar module (referred to below as the underside) in the assembled state and a housing for placing it on the solar module. In the housing, a connection device for the flexible flat conductor tape is housed.

The connecting device has an electrical contact terminal for producing a clamping contact with the flexible flat conductor strip, wherein the contact terminal can assume at least two defined stable states, namely an open mounting state in which an open or free Einfangraumbereich is defined in which the flat conductor strip is essentially without resistance introduced and a closed contact state in which a clamping contact with the between two clamping elements of

Contact terminal clamped flat conductor tape is made. Furthermore, the connection and connection box inside the housing comprises a deflection lever, which bends the flexible flat conductor band after insertion through the insertion opening into the connection and junction box in the open Einfangraumbereich the contact terminal, such that, the flexible flat conductor band after bending of the Contact terminal detected and can be contacted electrically. The connection H erfindungsgemäßeCI junction box according to the invention can be easily mounted, in particular by a robot arm. It is advantageous that the flexible flat conductor band without resistance even if possible without contact in the

Insertion opening is inserted next to the contact terminal and thus outside the Kontaktierungs- or Einfangraumbereichs, so that damage to the sensitive flat conductor band can be avoided. In particular, the insertion opening can be chosen to be relatively large, so that there is a certain tolerance with respect to the lateral arrangement of the connection and connection box on the solar module and an abutment of the conductor strip is avoided on parts of the connection and junction box.

Furthermore, the flat conductor strip at the nip by bending over obliquely or even parallel to the surface of the solar module, so that the clamping force of the contact terminal can act obliquely or even perpendicular to the surface of the solar module. Furthermore, the bend provides some flexibility of the flat conductor band, which can contribute to the longevity.

The actuation of the reversing lever is preferably carried out by a first actuating element, which is attached to the housing and optionally. Is formed integrally therewith. Suitably, the first actuating element in the form of a cam is formed which acts on the deflection lever. For this purpose, the housing and the connecting device are formed in two parts and movable to each other and the

Cam operates in response to a relative movement of the housing relative to the connecting device, the lever, thereby automatically causing the bending of the flexible flat conductor strip. Preferably, the housing has a second one

Actuator on which also automatically closes in response to the relative movement of the housing relative to the terminal device, the contact terminal to make the electrical contact with the flat conductor strip after it has been bent by the lever in the still open at Umfang bending Einfangraumbereich. The second actuator is e.g. formed as an actuating pin which projects inwardly into the housing and is integrally formed therewith. However, the housing cover itself can act as a first and / or second actuator, if the spatial arrangement allows it. The contact terminal is therefore actively closed by means of the second actuating element, only after the flat conductor strip is inserted into the contact terminal, so that the sensitive flat conductor ribbon does not need to press the contact terminal, as is the case with other connection and junction boxes.

The relative movement between the housing and the connection device is preferably realized as a linear displacement, ie that a displacement device is provided between the housing and the connection device. Further, the actuation of the reversing lever and the contact terminal takes place successively, so that in the placement operation in response to the relative displacement initially the first actuating element actuates the reversing lever and subsequently the second actuating element closes the contact terminal, finally to make electrical contact with the flat conductor strip. In the closed contact state, the flat conductor band is clamped in the contact terminal with a predefined clamping force. According to a simple embodiment, the displacement device comprises a guide sleeve on the connection device and a guide pin on the housing or vice versa. Guide pin and guide sleeve are formed self-clamping, the clamping is overcome by a predefined application of force, so that the housing can be taken with a robot arm and placed on top of the solar module, but in this case the connection device is secured in the housing against falling out. In this first or assembled state, the connection device protrudes out of the housing, so that initially only the connection device with the solar module comes into contact when placed on the solar module. In a further continuation of the month operation, the housing is subjected to a force force orthogonal to the solar module, wherein the connection device is already supported on the solar module. By applying force, the clamping between the housing and the connecting device is overcome, so that the housing is pushed against the solar module with relative displacement of the housing relative to the connecting device until it stops. Due to the relative displacement, the reversing lever is actuated one after the other automatically in the interior of the housing and the contact terminal is closed.

This has the advantage that in an automated assembly of the connection and junction box on the solar module only one step with a linear movement needs to be performed, which is particularly easy to perform for a mounting robot.

The deflection lever expediently comprises a holding section, which is fastened to the connection device, and a bending leg, which bends the flexible flat conductor strip and which is the holding section and the bending leg integrally connected to each other by means of a folding hinge, so that the BiegescheΗ-kel is pivotable relative to the holding portion.

Preferably, the contact terminal comprises a clamping spring and a counter-clamping element, of which at least one of the two has an electrical contact portion, and wherein the electrical contact with the flat conductor band is closed by an active movement of the clamping spring or the Gegenklemmelements in response to the operation by means of the second actuating element , It is easy to realize, for this purpose, to mount the clamping spring pivotally on the connecting device and to close the electrical contact with the flat conductor strip by means of a pivoting movement of the clamping spring in response to the operation by means of the second actuating element. In this case, a clamping portion of the clamping spring passes over the catching space between the clamping spring and the counter-clamping element in order to catch the bent flat conductor strip. As a result, the catching space when bending the flat conductor strip is advantageously relatively large and free of resistances or obstacles, so that the risk of damage to the flat conductor strip during bending is avoided.

Advantageously, a high and predefined clamping and contact force can be generated by the active closing of the contact terminal after insertion and bending of the flat conductor strip.

According to a preferred embodiment of the invention, the leaf spring-like clamping spring has an actuating portion, with which the second actuating element of the housing cooperates to close the contact terminal, wherein the actuating portion has a curved and a in the Substantially straight portion of the clamping spring comprises. This ensures a constant clamping and contact force, so that the contact has a lasting quality.

Suitably, the contact terminal on a metallic and generally U-shaped support frame in which the clamping spring is rotatably supported by bearing journals in bearing openings. The holding frame is slotted to the bearing openings, so that during the pre-assembly of the connection and junction box, the journals of the clamping spring can be inserted through the slots. Preferably, a cable connection terminal for connecting the connection cable, ie. preferably a stripped round conductor, provided. Preferably, the

Cable terminal a second clamping spring to close the electrical contact with the connecting cable.

Further preferably, the contact clamp comprises a latching mechanism by means of which the clamping spring is latched in the contact state, e.g. by engagement of locking lugs of the clamping spring in the holding frame. In the closed and latched state, the contact terminal is under predefined voltage. More preferably, the contact clamp on a clamping mechanism that holds the contact terminal in the open position. By applying force by means of the second actuating element, the clamping of the clamping mechanism is overcome to close the contact terminal.

Preferably, the connection device has a dielectric support to which the guide sleeves are preferably integrally attached and in which of the support frame by means of mutual latching hooks is engaged. The dielectric support thus forms the bottom of the connection and Verbiridϊmgsdose.

In the following the invention will be explained in more detail by means of embodiments and with reference to the figures, wherein the same and similar elements are partially provided with the same reference numerals. It can also be seen that the orientation information such as "bottom" or "bottom" is not to be understood as absolute orientation in space, but relative with respect to the solar module, since the connection and junction box mounted on the "back" facing away from the sun in the operation of the solar module The underside thus indicates the side facing the solar module in the mounted state.

Brief description of the figures

Show it:

Fig. 1 is a perspective view from above of the

2 shows a perspective view from below of and into the housing of the connecting and connecting box, FIG. 3 shows a cross section transversely to the solar module through the

Connection and connection box with the electrical

Connecting device in the open mounting state, Fig. 4 shows a cross section transverse to the solar module through the

Connection and connection box with the

Connecting device in the intermediate state, Fig. 5 shows a cross section transverse to the solar module through the

Connection and connection box with the connection device in closed position

Contact state and Fig. 6 is a perspective partially sectioned

Presentation of the connection device. ^'Detailed Description of the Invention

Referring to FIGS. 1 ^' and> -2, the junction box has a plastic housing 2. The housing 2 is formed by a substantially rectangular frame of four side walls 2a to 2d and a closed lid 2e connecting the four side walls and extending parallel to the solar module. The five-sided closed and downwardly open housing 2 is z. B. injected in one piece. The connection cable (not shown) is led through connection cable bushings 4 to the outside.

Referring to Fig. 2, the housing 2 is open at the bottom and has an outwardly projecting mounting frame 8 with a circumferential adhesive groove 10, so that the

- Housing 2 has a hat-like shape. By means of the adhesive introduced into the adhesive groove 10, the housing is permanently glued and sealed on the silicone module. The hat-shaped or trough-like shape of the housing forms an inner cavity 12, in which the connecting device, not shown in Fig. 2 is housed in the assembled state substantially waterproof. The connection device can, but need not, be glued additionally on the solar module by means of a thin adhesive layer.

Further, the underside of the housing cover 2e has a first actuating device 16 in the form of a lateral cam for actuating the reversing lever (not shown in FIG. 2, cf. FIG. 3). 5). Furthermore, actuating pins 18 for actuating the contact terminal protrude from the housing cover 2e into the interior 12 Actuators 16 and 18 are formed integrally with the housing in this embodiment.

With reference to FIGS. 3-5, the connection device 20 is arranged in the housing 2 of the connection and connection box 1. Fig. 3 shows the connection and connection box after it has been slipped over the flat conductor strip. The junction box is located when slipping in a first state, the mounting state in which the lever 21 is in a first position. In the assembled state, in which the connection and connection box is preferably delivered, the insertion space area 30 is kept free above the insertion opening 26 and the contact terminal 22 is opened.

The connecting device 20 has guide sleeves 15 into which the guide pins 14 are inserted. The guide pins 14 clamp in the associated guide sleeves 15, such that when placing the connection and junction box 1 on the solar module 24 the

Terminal device 20 is clamped in the housing 2, so that the housing can be captured by a robot and automatically placed without the connecting device 20 falls out. On the other hand, the clamping between the guide pins 14 and the

Guide sleeves 15 by applying force overcoming to allow a relative displacement between the housing 2 and the connecting device 20. The guide sleeve 15 is slotted in this example in order to improve the overcoming clamping interaction with the guide pin 14.

In the assembled state shown in Fig. 3, the connecting device 20 is not yet fully inserted into the housing 2, that is still protruding a bit (a few millimeters) from the housing 2 down, ie on the solar module side facing ^' out. Thus, in the assembled state, an offset between the underside 20a of the connecting device 20 and the mounting frame 8 of the housing 2, so that when attaching the connection and junction box 1 first, the connection device 20 comes into contact with the solar module 24 and in this in Fig. 3rd shown state of the mounting frame 8 is still spaced from the surface 24 a of the solar module 24.

The connection and junction box 1 has a relatively large insertion opening 26 on its side facing the solar module 24 underside. This ensures that the sensitive, flexible flat conductor strip 28, the so-called "ribbon", in the assembled state, is introduced into the connection and connection box 20 without obstacle and resistance from below. As a result, the risk of damage to the flat conductor strip 28 is reduced. The connection and junction box 1 defines in this state a located between the contact terminal 22 and the lever 21 open Einführraumbereich 30, in which the flat conductor strip 28 immersed without resistance when placing the connection and junction box from below. Preferably, no contact between the contact terminal 22 or the reversing lever 21 and the flat conductor strip 28 takes place in this state.

^* For contacting the flat conductor strip, the housing will be subjected to force against the solar module 2 24, wherein the connection device 20 is supported on the solar module 24th This results in a linear relative displacement between the housing 2 and the connecting device 20 to the effect that the housing 2 is pushed over the connecting device 20 until the mounting frame 8 with the in the adhesive groove 10th located adhesive (not shown) on the surface of the solar module 24 to-plant and the bottom of the connecting device 20 and the housing 2 abut flush with the solar module 24. This closed contact state represents the end or operating state and is shown in Fig. 5. In the operating state, the housing 2 is glued to the solar module by means of the adhesive located in the adhesive groove 10.

Before the connection and junction box 1, however, enters the final state, it still passes through the intermediate state shown in Fig. 4, in which the flat conductor strip 28 is already bent and the contact terminal 22 is still open. Thus, when mounting the connection and junction box 1, the flat conductor strip 28 is first introduced into the insertion space region 30. Subsequently, after the underside 20a of the connection device 20 has come to rest on the solar module 24, the flat conductor strip 28 is moved into the catchment region by means of the deflection lever 21 31 of the contact terminal 22 bent. Next, the contact terminal 22 is actively closed by means of the second actuating element 18. Thus, the connection and junction box 1 defines three predefined states, namely the mounting state (Figure 3), in which the lever 21 is in a first position, so that the Einführraumbereich 30 is free and the contact terminal 22 is open; the intermediate state (Figure 4), in which the flat conductor strip 28 is bent by the reversing lever 21 in the Einfangraumbereich 31 of the still open Kontaktaktklemme 22; and the end or operating state (FIG. 5), in which the contact terminal 22 is closed, and makes the electrical contact with the flat conductor strip 28 by means of clamping contact. In the relative displacement of the G-ehäuses 2 against the connecting device 20 thus initially interact the first actuator 16, in this example an actuating cam, with the lever 21 and subsequently the second actuator 18, in this example, an actuating pin, with the clamping spring 32. Through this successive operation, the bending portion 21a of the reversing lever 21 is initially deflected in response to an operation by means of the cam 16 and subsequently closed the contact terminal 22 by means of a pivoting movement of the clamping spring 32. The cam 16 is formed in this example as a projection of the side wall of the housing 2 integral therewith. In this case, the clamping portion 34 of the clamping spring 32 passes over the trapping space 31 of the contact terminal and clamps and contacts free end of the flat conductor strip 28 between the clamping portion 34 of the clamping spring 32 and the counter-clamping member 36. The bending portion 21a of the reversing lever 21 is integrally by means of a hinge hinge 21b with a holding portion 21c connected. The holding portion 21 c is attached to the connecting device 20.

The clamping spring 32 has an actuating portion 38 which is divided into a curved portion 40 and a substantially straight portion 42. When closing, the actuating element 18 initially acts on the curved portion 40 (see Fig. 4) and biases in the closed contact state shown in Fig. 5 of the connection and junction box 1 against the straight

Section 42. That is, the actuator 18 passes over when closing the operating portion 38 of the clamping spring 32nd Referring to Fig. 6, in this example, the terminal device 20 includes two contact terminals 22 and two cable terminals 46 for the respective electrical connection cable (not shown). In this example, the cable terminal 46 is also with a

Provided clamping spring 48, but here also other connection variants, such. B. screw terminals are used. It can be seen that the invention can also be realized with only one contact terminal or more than two contact terminals.

Furthermore, the connection device 20 has a dielectric support 50, preferably made of plastic, which defines with its base plate 50a, the underside of which defines the primary abutment surface to the solar module 24 and to which the contact clamp is suspended. The contact terminal has a substantially U-shaped, metallic support frame 51, preferably made of copper, which is latched to the carrier 50 with latching hooks 52.

Fig. 6 shows the contact terminal 22 in the open mounting state. The clamping spring 32 has two locking pins 54, which are clamped in the open mounting state each in recesses 53 in the metallic support frame 51 surmountable. In the contact state, the contact spring 32 is biased against the counter-clamp 36 and the latching pin 54 are engaged behind corresponding projections 55 in the metallic support frame 51 (see Fig .. 5). This ensures a permanent and safe electrical contact.

Further, the clamping spring 32 is suspended by means of bearing pin 56 in slotted bearing openings 58. Thus, the clamping spring 32 can be easily used in the manufacture of the connection and junction box and is due the rotated in the assembled state and contact state relative to the slot 60 position des- flat bearing pin 56 secured. The clamping spring 32 is stamped from sheet steel and bent substantially U-shaped.

The metallic support frame 51 may further include an electrical connection element for the bypass diode.

Referring again to Figs. 3-5, the cooperation between the housing 2 and the

Connection device 20 by means of the actuators 16 and 18 successively the bending portion 21a of the reversing lever 21 and the clamping spring 32 is set in a pivoting movement. At the end of the pivoting movement, the clamping spring engages with its locking lugs 54 in the

Contact or operating state (Fig. 5) in the metallic support frame 51 a. By the bias of the clamping spring 32, a permanent and predefined pressure force between the flat conductor strip 28 and the conductive counter-clamping element 36 is produced.

It will be apparent to those skilled in the art that the above-described embodiments are to be understood by way of example, and that the invention is not limited to them, but that they can be varied in many ways without departing from the invention. For example, For example, the connection and junction box may have a plurality of contact terminals for contacting a plurality of flat conductor strips in a box. It can also be seen that the features, regardless of whether they are described in the description, the

Claims, figures or otherwise disclosed are also individually defining essential components of the invention, even if described together with other features.

Claims

Claims:

1. connection and junction box (1) for a photovoltaic solar module (24) with flexible

Flat conductor strips (28) which protrude from the surface of the solar module, wherein the connection and junction box (1) in its mounted state to the solar module (24) side facing an insertion opening (26) for at least one of the flexible flat conductor strips (28) of the solar module (24) and a housing (2) for placement on the solar module (24) and in the housing (2) arranged connection device (20) for the flexible flat conductor strip (28), wherein the connection device (20) is an electrical contact terminal ( 22) for producing a clamping contact with the flexible flat conductor strip (28), and wherein a deflection lever (21) is included, which the flexible flat conductor strip (28) after insertion through the insertion opening (26) in the connection and connection box (1) to the contact terminal (22) bends over, in such a way that, the flexible flat conductor strip (28) after bending by means of the contact terminal (22) is electrically contacted.

2. connection and junction box (1) according to claim 1, wherein the housing (2) relative to the connecting device (20) is movable and on the housing (2) a first actuating element (16) is arranged, which in response to a relative movement of Housing (2) opposite the connecting device (20) the deflection lever (21) actuated to the bend of the flexible To cause flat conductor band (28).

3. connection and junction box (1) according to claim 1 or

2, wherein the housing (2) relative to the connecting device (20) is movable and on the housing (2) a second actuating element (18) is arranged, which in response to a relative movement of the housing (2) relative to the connecting device (20) Contact terminal (22) closes to make electrical contact with the flat conductor strip (28).

4. connection and junction box (1) according to claim 2 and

3, wherein the housing (2) and the connecting device (20) by means of a displacement device (14, 15) against each other are displaceable and when placing the connection and junction box (1) on the solar module (24) the housing (2) relative to the connection device (20) is displaced, whereby in the fitting operation, the first actuating element (16) actuates the reversing lever (21) and the second actuating element (18) closes the contact terminal (22) to make electrical contact with the flat conductor strip (28).

5. connection and junction box (1) according to claim 4, wherein the displacement device (14, 15) comprises a guide sleeve (15) and a guide pin (14), which clamp in the mounting state (Fig. 3) against each other, such that on the one hand in the mounting state, the connection device (20) in the housing (2) is secured against falling out and on the other hand in the installation on the solar module (24) by a force on the housing (2) against the solar module (24), this clamping can be overcome to the Housing (2) relative to the against the Solar module (24) supported connecting device (20) to the stop of the housing (2) against the solar module (24) to move and in this case to actuate the reversing lever (21) and to close the contact terminal (22).

6. connection and junction box (1) according to one of claims 3 to 5, wherein the contact terminal (22) has a clamping spring (32) and a counter-clamping element (36), and wherein the electrical contact with the flat conductor strip (28) by a movement at least one of the clamping spring (32) or the counter-clamping element (36) is closed in response to the actuation by means of the second actuating element (18).

7. connection and junction box (1) according to claim 6, wherein the clamping spring (32) and / or the counter-clamping element (36) is pivotally mounted on the connecting device (20) and the electrical contact with the flat conductor strip (28) by means of a pivoting movement at least one of the clamping spring (32) or the counter-clamping element (36) is closed in response to the actuation by means of the second actuating element (18).

8. connection and junction box (1) according to any one of the preceding claims, wherein the clamping spring (32) has an actuating portion (38) with which the actuating element (18) of the housing (2) cooperates to close the contact terminal (22) and wherein the actuating portion (38) comprises a curved and a substantially straight portion (40, 42) of the clamping spring (32).

9. connection and junction box (1) according to any one of the preceding claims, wherein the contact terminal (22) has a latching mechanism (54, 55), by means of which the clamping spring (32) is latched in the contact state.

10. connection and junction box (1) according to claim -9, wherein the contact terminal (22) in the closed and latched state is under tension to the flat conductor strip (28) between the clamping spring (32) and the counter-clamping element (36) with a permanent clamping force to clamp and contact.

11. connection and junction box (1) according to any one of the preceding claims, wherein the contact terminal (22) has a holding frame (51) and the clamping spring (32) by means of bearing pins (56) in bearing openings (58) in the holding frame (51) rotatable is stored.

A junction box (1) according to claim 11, wherein said frame (51) is made of electrically conductive material of generally U-shaped configuration and comprises a cable terminal (46) for connecting said connection cable, said cable terminal ( 46) in the same holding frame (51) as the associated contact terminal (22) for the flat conductor strip (28) is suspended.

13. Connection and connection box (1) according to one of

Claims 11 or 12, wherein the connecting device (20) comprises a dielectric support (50) in which the

Holding frame (51) is suspended.

14. connection and junction box (1) for a photovoltaic solar module ^'' {-24) with flexible flat conductor strips (28) which protrude from the surface of the solar module, comprising a housing (2) for mounting on the solar module

(24), in the housing (2) arranged connecting device (20) with an electrical contact terminal (22) for producing a clamping contact with the flexible flat conductor strip (28), an insertion opening (26) on the underside of the connection and connection box (1 ), wherein the insertion opening (26) is considerably wider than the flexible flat conductor strip (28) to the flexible flat conductor strip (28) through the insertion opening (26) from below leadership and non-contact in a outside of the contact terminal (22) lying free insertion space (30) of the housing (2) to introduce, and a reversing lever (21) which the flexible

Flat conductor band (28) after insertion from the free Einführraumbereich (30) to the contact terminal (22) hinbiegt out, wherein the contact terminal (22) is opened during Umbiegevorgang and an open Einfangraumbereich (31) for receiving the flexible

Flat conductor strip (28) defined so that the flexible flat conductor strip (28) by means of Umlenklenkhebels (21) in the open Einfangraumbereich (31) of the contact terminal (22) is bent and the flexible flat conductor strip (28) after bending by closing the contact terminal (22) is electrically contactable.

15. Photovoltaic solar module (24) with out of the surface (24a) protruding flexible flat conductor strips (28), and at least one connection and connection box (1) mounted on the solar module (24) according to one of the preceding claims.

16. Method for connecting a connection and

Junction box (1) to a photovoltaic solar module, comprising the steps:

Providing a solar module (24) with flexible flat conductor strips (28) which protrude from the surface (24a) of the solar module (24),

Provide a connection and

A junction box (1) comprising a housing (2) and a connection device (20) arranged in the housing (2) with an electrical contact terminal (22) for producing a clamping contact with at least one of the flexible flat conductor strips (28) and an insertion opening (26 ) at the bottom of the connection and junction box (1),

Attaching the junction box (1) on the solar module (24), wherein the connection and

Junction box (1) on the flexible flat conductor strip (28) is slipped and the connection device (20) in the housing (2) slidably mounted and surmountably clamped, so that the connection device when placing not from the

Housing (2) falls out, wherein the connecting device protrudes downwards out of the housing (2), so that only the connecting device (20) initially comes into contact with the surface (24a) of the solar module (24) during placement,

Applying force to the housing (2) against the solar module (24) in such a way that the housing (2) is displaced relative to the connection device (20) until the housing (2) also abuts the solar module (24), wherein in response to the relative displacement between the housing (2) urid ^ the connecting device (20) the flexible flat conductor strip (28) in the connection and junction box (1) is contacted automatically.