EP2559115A1

EP2559115A1 - Leadframe and connecting socket having a leadframe

Info

Publication number: EP2559115A1
Application number: EP11723278A
Authority: EP
Inventors: Cord Starke; Sebastian Schäfer; Sebastian Scholz; John Phillip Huss
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2010-04-14
Filing date: 2011-04-14
Publication date: 2013-02-20
Anticipated expiration: 2031-04-14
Also published as: TW201212788A; US20130065456A1; DE102010015225A9; JP2013527566A; TWI487457B; DE102010015225A1; CN102859808A; US8979597B2; EP2559115B1; WO2011128401A1; JP5567736B2; CN102859808B

Abstract

The present invention relates to a leadframe having a plurality of connections for electrical conductors, a plurality of contacts and at least two outer current bars, and to a connecting socket having a leadframe as well as to a system for transmission of electrical power, in particular from a plurality of solar modules (photovoltaic modules), having a connecting socket such as this. In order to devise a leadframe which occupies as little space as possible, at least one connection (32a-e) is provided for an electrical conductor between the outer current bars (34a, b). This allows the leadframe to have a compact physical shape. The invention is based on the discovery that leadframes are used in the prior art to bridge the distances between predetermined contact separations, offering the possibility of producing, in one stamped part, strip conductors which have different geometries. Furthermore, a connecting socket having such a leadframe is described, and a system for transmission of electrical power using such a connecting socket.

Description

Leadframe and junction box with a leadframe

The present invention relates to a leadframe having a plurality of terminals for electrical conductors, a plurality

Contacts and at least two outer current bars,

and a junction box with a leadframe and a system for transmitting electrical energy, in particular of a plurality of solar modules, with such a junction box.

In this case, solar modules in the context of the present invention, in particular photovoltaic modules, ie modules that generate electrical energy by the incidence of light, which can then be delivered to consumers.

From DE 102 32 281 AI is a use of a

Leadframes with partially parallel current bars within a connection arrangement for connecting a connecting cable to the stator winding ends of a

External rotor known. There, an arrangement of the contacts is disclosed corresponding to the position of the stator winding ends.

Object of the present invention is therefore to provide a leadframe with the least possible footprint.

This is realized in a leadframe of the type mentioned above in that at least one connection (32a-e) for an electrical conductor between the outer

Current bar (34 a, b) is provided. In this way, a compact design of the lead frame can be achieved. The invention is based on the finding that in the prior art leadframes are used to

To bridge distances between given contact distances while offering a possibility in their Geometry to produce different tracks in a stamped part.

In order to create a particularly compact and simple leadframe, in a preferred embodiment of the invention, the outer current bars have first sections which run essentially parallel to one another. This can be realized even better, if at least one

Connection for an electrical conductor in his

Longitudinal direction transverse to the longitudinal extent of the first

Section of the outer current bar runs.

To connect between the current bars and the

To be able to produce connections for electrical conductors, bridges are provided between the first sections of the outer current bars and the connections for electrical conductors. These can be produced easily with a stamped part. In a preferred embodiment of the invention, a second portion of each outer current bar is angled away from the first portion and a bridge is provided between at least one of the second portions and one of the terminals for an electrical conductor. Due to this design, the bridges are accessible even with fixed ladders.

By arranging at least one current bar as an inner current bar between the two outer current bars, the design also remains in use

Current bars compact and thus the space required low.

A further reduction of the space requirement can be achieved in that the contacts to a plane spanned by the current bar and the connections level are aligned vertically, because in this way a

Contacting of the contacts by a plug also perpendicular to the plane defined by the current bar and terminals level, and thus perpendicular to the largest dimension of the leadframe results.

Particularly preferred is the course of the current bar

rectilinear because this results in a simple structure of the leadframe and thus also the punching tool.

In a particularly preferred embodiment, the leadframe on fewer contacts than connections for electrical conductors, so that even with a limited number of contacts a higher-pole cable can be placed uniformly and the individual conductors of the cable are securely received. This is also a faulty circuit, z. For example, by confusing the conductors in the wiring of the leadframe less likely than in one of the leadframe

Leadframe varying assignment of the individual conductors to the terminals. The intended assignment of the conductors to the contacts is effected by the corresponding assignment of the bridges of the leadframe. This can vary depending on the requirements of the wiring according to a predetermined scheme.

In a particularly preferred embodiment

adjacent end faces of the terminals for electrical conductors characterized by existing short residual sections punched webs. These are evidence of a particularly efficient production of leadframes according to the invention, namely by punching, whereby also the later no longer required webs are punched out. But the punching tool will not punch out the webs at every point exactly, but small deviations due to tolerances must be accepted. But to the required material cross-section and thus the To reduce current carrying capacity, the

Tolerances preferred in the other direction

taken into account, so that remains of the

punched webs can not be avoided.

On the one hand to be able to meet the required minimum distances and on the other hand to achieve a production-friendly but compact design, the distances between the connections for electrical conductors and the current bars with each other, but also the distances between terminals for electrical conductors and current bars with about 1.8 mm up to 4 mm and more preferably from 1.8 mm to 3 mm.

The contacts are preferably 4 mm to 12 mm and more preferably 9 mm to 10.5 mm apart.

The leadframe, which is the link between it

connected cables is present for protection

Touch, but also to protect against unwanted

Influences, recorded in a junction box.

In a preferred embodiment of the leadframe are the surfaces of the terminals, which are provided for the conductors to be connected to the surfaces of the

Strombalken out.

By this measure, the handling of the connection of the connections to the conductors to be connected is particularly easy, because the insulation exerts on the one hand no forces on the connection point, on the other hand, however, the connection point is kept free of foreign substances in the connection, the connection during the connection could escape the insulating material. To ensure a twist-proof connector, the mating face of the junction box is equipped in a preferred embodiment with a mechanical coding in the form of different geometries of the contact holes, so that a plug with a complementary mating face can only be inserted in the prescribed position.

To feed one cable out of several

Power sources such as To realize solar modules in a simple way is the cable mentioned above

characterized by a plurality of connected to the cable junction boxes according to the invention in

predetermined intervals.

The distribution of the charging of the individual phases is particularly preferably realized by bridges arranged according to an alternating pattern in the junction boxes. In a particularly preferred embodiment of

Invention, the cable is characterized by cast-out junction boxes. This ensures complete protection of the junction boxes against penetrating particles and water (IP67 protection).

A particularly simple and flexible production process is realized by using a leadframe to make a galvanic connection between

Connections for electrical cables and contacts for a connector in junction boxes for feeding electrical power into a cable.

A simple method of manufacturing a cable includes operations in which the cable is stripped and stripped at predetermined positions,

the stripped conductors to the terminals of the

Leadframe connected,

Cable and leadframe are inserted into a junction box and the junction box is closed, the junction box is shed.

In this case, the respective predetermined assignment between

Connections and current bars realized in a simple way that the connections between the

Connections and the current bar by cutting out

predetermined bridges between the terminals and the current bars of the leadframe before connecting the

stripped conductor is made with the terminals.

Due to the fact that the connections between the terminals and the current bars takes place by separating predetermined bridges between the terminals and the current bars of the leadframe prior to casting the junction box, the separation can then be provided adapted to the production process, if it is particularly advantageous in the

Integrate production process. To a plug with an interior and a

Contacting area and with a half shells

To make housing formed safer, the interior is filled with a potting compound, which connects to the cable and the housing. Even with a damage of the plug then the fragments of the

Potting compound, so that access to

Potential leading lines is prevented.

The plug is made by a housing made of a shock-resistant and UV-resistant material particularly resistant and thus still offers good protection for the components contained therein even after intensive UV irradiation.

To achieve a good castability is in the

Plug a seal of the plug contacts against the

Interior provided by a sealing plate, so that the potting compound can not reach the plug contacts themselves and can affect the contact safety. Particularly preferably, the plug has an integral with the

Half shells of the housing molded sealing elements, which from the interior to the plug contacts

enclose the running ladder. This eliminates the need for a separate seal and thus simplifies the installation of the plug.

Since the plug is designed especially for connecting a power source, in particular a solar module, mediating a junction box to a manifold, resulting from the interaction of the plug and junction box a particularly space-saving and reliable connection.

Particularly advantageous is the system for transmitting

electrical energy, in particular of a plurality of solar modules, the junction boxes according to the invention and

Plug and at least one inventive cable comprises.

The invention is based on the figures

described in more detail. Showing:

Fig. 1 is a perspective view of a

junction box according to the invention with cable;

Fig. 2 is an exploded view of the junction box in

Fig. 1; Fig. 3 shows a first embodiment of a

lead frame according to the invention;

Fig. 4 shows a second embodiment of a

lead frame according to the invention;

Fig. 5 shows a third embodiment of a

lead frame according to the invention;

Fig. 6 is a perspective view of the with

Cable connected leadframe;

7 is a plan view of leadframe and cable with a first assignment of terminals and current bars.

Fig. 8 is a plan view of the leadframe and cable with a second assignment of terminals and

Current bar;

Fig. 9 is a plan view of leadframe and cable with a third assignment of terminals and

Current bar;

10 is a highly simplified representation of a

Plug housing;

Fig. 11 shows a fourth embodiment of a

lead frame according to the invention;

Fig. 12 a Kabelmanger for use with various

Embodiments of an inventive

Leadframe;

Fig. 13 is a perspective view of the with

Cable connected leadframe according to the fourth

embodiment;

Fig. 14 is a perspective view of the with

Cable connected leadframe according to the fourth embodiment with cable managers; and FIG. 15 is a side view of a leadframe and cable according to the fourth embodiment.

Fig. 1 shows a junction box 10 according to the invention with cables 16, 18. These cables 16, 18 may have a

forming continuous strand through the junction box is guided through. But you can also each one

Be cable ends of cable pieces of predetermined length, which are joined together by the junction box 10 into a strand. The length of this strand is for the

Invention not relevant and larger cable lengths can be drummed as usual.

The housing 10 is composed of a lower shell 12 and a

Upper shell 14 is formed, which are locked together. The upper shell 14 has a connection for a (not shown in this figure) plug and that

Connector face, so that portion of the junction box 10 to which the plug is connected, has round openings 20 and at least partially angular openings 21. All shown openings 20, 21 serve the

Contacting and are adapted in number to the number of contacts to be contacted. Only in the figures, a housing with five openings is shown. Of course, when using four contacts, a four-contact case is also used.

The different forms of the openings of the

Plug face serve the mechanical coding of the

Plug. While round openings are universal, plugs that are placed the wrong way around the at least partially square openings, not to a

Lead contact. This is always a correct installation with the associated desired contact assignment

ensured. Further, in the Fig. A seal seat 15 is shown, which is the inclusion of a known per se in the prior art gasket, for. As an O-ring, allowed to seal the transition between junction box 10 and connector 40 (not shown in this figure), so that the connector in total meets the requirements of

relevant protection class. As long as the Junction box 10 is not occupied by a plug, a (not shown in the figures) sealing cap can be placed and the openings are thus also sealed.

In Fig. 2, the junction box 10 is shown open. On the lower shell 12 are good locking tabs 24 can be seen, which cooperate with locking lugs 23 on the upper shell 14 and form the housing of the junction box 10. In addition, detent springs 22 are provided, the lower shell 12 and upper shell 14 securely hold together.

Within the housing, the cables 16, 18 are shown, which are prepared for the electrical connection.

Furthermore, a so-called leadframe 30 is shown, which is provided for a contact, the below

will be described in detail. The provision of the cables 16, 18 includes the stripping of the outer cable sheath as well as the stripping of the individual conductors, so that they

can be connected to each other. Furthermore, the device may include fanning the conductors so that each of the conductors is a predetermined distance from the conductor

has adjacent conductor and is located at a predetermined position above the leadframe 30.

The cable openings 17 are designed so that the housing of the junction box 10 can take over the strain relief function. For this purpose, the cable openings 17 are so

shaped in that the inside of the housing of the junction box 10 recorded cable sheath is deformed so that

Cross-section of that of the cable openings 17 deviates so much that he can not pass this. Thus, acting on the cables 16, 18 tensile loads in the housing of the junction box 10 are removed and the cables 16, 18 are relieved. How the leadframe 30 can be configured is shown by way of example in FIGS. 3, 4, 5 and 11. All lead frames 30 shown in these figures have in common that they have connections 32a-e which are provided for the conductors to be connected (not shown in this figure). The connection of the ladder with the

Leadframe 30 can be done in a known manner. The person skilled in the art is the joining techniques such as soldering, crimping, bonding, IDC, and welding (eg.

Resistance welding) is well known, so a further implementation of these individual methods is not

is required. The skilled person will rather select and use the appropriate method for the particular application.

Furthermore, the leadframe 30 includes current bars 34a-d and contacts 36a-d. The current bars 34a-d are the

Connections between the terminals 32a-e and the

Contacts 36a-d. The contacts 36a-d are used for connection to the outside, so the connection to a cable below

Mediation of a plug.

In the figures, it can be clearly seen that in each case five

Terminals 32a-e, but only four contacts 36a-d are provided. In order to be able to produce the desired configuration between the terminals 32a-e and the contacts 36a-d, bridges 38a-f are provided, which are interrupted in accordance with the respective configuration to be produced. This interruption can z. B. by punching or simply cutting the bridge just not required 38a-d done. Corresponding to the remaining bridges, the assignments of the connections 32a-e and the contacts 36a-d are then made through the intermediary of

Current bar 34a-d. It is also good in the figures recognize that in the embodiments shown, the two terminals 32d, 32e closest to the contacts 36a-d are connected without a bridge to the current bars and further to the contacts 36b, 36c.

Between the terminals 32a-e webs 39 are present. However, these webs 39 are only relevant for the manufacture and handling of the leadframe 30, because they cause the necessary rigidity, and are removed during assembly of the leadframe 30, z. B. by punching.

In Fig. 3, an embodiment of the leadframe 30 is shown with two bridges 38a-f, with which each of the three of the contacts 36a-d furthest removed terminals 32a, 32b, 32c with the outer current bars 34a, 34c

connected is. In order to separate one of the terminals 32a, 32b, 32c from the current bars 34a, 34c, the

corresponding bridges 38a-f interrupted or

be cut out. By interrupting a respective one of the terminals 32a, 32b, 32c associated bridge 38a-f of the connection one of the current bars 34a, 34c

associated so that the connection between the terminal 32a, 32b, 32c and one of the contacts 36a, 36d is made.

In Fig. 2 it can be seen that the conductors on the

Leadframe 30 are arranged, or vice versa, that the leadframe 30 is disposed below the ladder. The arrangement of the bridges 38a-f below the conductors shown in FIG. 3 results in a maximum space saving. But it is advantageous in the production process, the bridges 38a-f according to the required assignment of

Terminals 32a, 32b, 32c to the contacts 36a, 36d already before connecting the conductors to the terminals 32a, 32b, 32c to interrupt. In Fig. 4, the arrangement of the bridges 38a-d is different. Also in this figure are terminals 32a-e for the conductors

provided after connecting to the ladders

lie below this ladder. However, the bridges 38a-d are pulled laterally out of the area below the conductors so that the conductors do not bridge the bridges 38a-d

cover. Thus, the bridges 38a-d can still be interrupted even after the connection of the conductors. As a result, the production process can be made more flexible, since in this embodiment, the time of interruption of the bridges 38a-d considerably better to the rest

Requirements of the production process can be adjusted. Fig. 5 differs by the orientation of

Contacts 36a-d of FIG. 4. While the contacts in FIGS. 3 and 4 are oriented perpendicular to the plane of the current bars 34a-d, such contacting is also perpendicular to the plane of the current bars 34a-d (or of the current bars 34a -d and the terminals 32a-e spanned level) takes place. Deviating from this, the contacts 36a-d in FIG. 5 extend in the plane defined by the current bars 34a-d and the terminals 32a-e. This makes it possible to realize a contact also in this plane, so depending on the space conditions the most advantageous

Contacting by selecting the leadframe 30 (and a suitable housing) can be set.

FIG. 6 shows a perspective view of conductors LI, L2, L3, N, PE connected to leadframe 30. Also in this figure, the cover of the terminals 32a-e is clearly visible through the conductors LI, L2, L3, N, PE. In the figure below the conductors LI, L2, L3, N, PE, the bridges 38a-d are to be seen, which are therefore not covered by the conductors LI, L2, L3, N, PE and thus at a suitable Job interrupted in the production process (eg

punched out) can be.

In this Fig. And the following Figs. 7 - 9 it can be seen that always all the conductors LI, L2, L3, N, PE are connected to the terminals 32a-e. The connection of the conductors LI, L2, L3, N, PE with the current bars 34a-d takes place directly for the conductors PE and N, because the connections for these two conductors are directly connected to the current bars 34c, 34d. The conductors LI, L2, L3 are replaced by a suitable breaking of the bridges 38a-d with the

Current bars 34a, 34b and further connected to the contacts 36a, 36d. It follows that the conductors PE, N are always connected to the contacts 36b, 36c. This is of course a possible embodiment. Likewise, the conductors PE, N by a suitable routing of the current bars 34a-d and arrangement of the bridges 38a-d z. B. connected to the contacts 36a and 36d. Accordingly, then the conductors LI, L2 would be connected to the contacts 36b, 36c.

Through the bridge 38a, the conductor L2 is connected to the contact 36a through the intermediary of the current bar 34a. Or not, if the bridge 38a is punched out. The conductor L3 is connected to the contact 36d via the bridge 38d and through the current bar 34b, or not. The conductor LI is either connected by the bridge 38b and the current bar 34a to the contact 36a or via the bridge 38c and the current bar 34b to the contact 36d or again just not. It follows that the conductor L2 is always connected to the contact 36a and the conductor L3 is always connected to the contact 36d when the respective bridges 38a and 38d are present, while the conductor LI, according to existing bridges 38b, 38c provided , either via the current bar 34a with the contact 36a or is connected via the current bar 34b to the contact 36d. This will be explained again with reference to the following figures

explained in detail. In Fig. 7, the conductors LI, L2 are connected to the terminals 36a and 36d via the bridges 38a and 38c, while the bridges 38b and 38d are punched out. Consequently, a connection of the conductor LI via the bridge 38c and the current bar 34b results to the contact 36d. By the

Punching out the bridge 38d, the conductor L3 is not connected to any of the current bars and accordingly does not contact any of the contacts 36a-d. The conductor L2 is connected to the contact 36a via the bridge 38a and the current bar 34a.

Including the fixed connection of the conductors PE and N, the assignment of contact 36a to conductor L2, contact 36b to conductor N, contact 36c to conductor PE, and contact 36d to conductor LI thus results.

In Fig. 8, the conductors L2, L3 are connected to the terminals 36a and 36d because the bridges 38a and 38d

have been preserved while the bridges 38b and 38c are punched out. Consequently, a connection of the conductor L3 via the bridge 38d and the current bar 34b results to the contact 36d. By punching out the bridge 38b and 38c, the conductor LI is disconnected from the current bar 34a and 34b. The conductor L2 is connected to the contact 36a via the bridge 38a and the current bar 34a.

Including the fixed connection of the conductors PE and N, the assignment of contact 36a to conductor L2, contact 36b to conductor N, contact 36c to conductor PE and contact 36d to conductor L3 thus results.

In Fig. 9, the conductors LI and L3 are connected to the terminals 36a and 36d via the bridges 38b and 38d, while the bridges 38a and 38c punched out. Consequently, a connection of the conductor LI via the bridge 38b and the current bar 34a results to the contact 36a. By punching out the bridge 38a, the conductor L2 is not connected to the current bar 34a and therefore does not contact the contact 36. The conductor L3 is connected to the contact 36d via the bridge 38d and the current bar 34b. Including the fixed connection of the conductors PE and N thus results in the

Assignment of contact 36a to conductor LI, contact 36b to conductor N, contact 36c to conductor PE and contact 36d to

Head L3.

In Fig. 10, a connector housing 40 is shown greatly simplified, as it may be provided for the connector for connection to the junction box (see Fig. 1, 2). The housing of the plug 40 is divided into two half-shells 41, 42. In each of these half-shells 41, 42, a part of the cable duct 43 is formed, so that the housing can surround the (not shown in this Fig.) Cable.

Within the housing sealing elements 44a, 44b integrally formed, which together seal the interior of the housing against the contacting area, so that the housing can be cast. The openings required for supplying the potting compound on the one hand and for venting on the other hand are assumed to be known and are therefore not shown in this figure. In each of the sealing elements 44a, 44b recesses 45 are provided, through which the conductors or the contacts can be performed themselves. When joining the

Housing halves 41, 42 form the Dichtelemte 44 a, 44 b, a seal which seals the interior of the housing against the contacts, so that a potting compound with which the housing the plug 40 is filled, the contact area can not reach. As a result, on the one hand a tight housing is realized, while the sealant the

Contact security not impaired.

In Fig. 11 is a fourth embodiment of a

leadframes 30 according to the invention shown. These

differs from the previously discussed leadframes essentially in that the leadframe is cranked. By the cranking are the surfaces of the terminals 32a-e, which are provided for the conductors to be connected (not shown in this figure), with respect to the surfaces of the current bars 34a-e out. By this cranking, which is particularly well visible in the side view of FIG. 15, the

Handling in the connection of the terminals 32a-e to the conductors to be connected particularly simple. At the respective terminals 32a-e are the stripped conductors 19th

attached while cable sections 46, the one more

Isolation, are beyond the offset. This ensures that the insulation on the one hand exerts no forces on the connection point, on the other hand, however, the connection point is kept free of foreign substances during connection, which could escape during bonding from the insulating material. If, for example, a conductor is soldered, the insulation - if it is in the area of the solder joint - can be damaged by the soldering process and decomposition products can get into the solder joint and impair this solder joint. The invention significantly minimizes these effects.

FIG. 13 shows a perspective view of the leadframe 30 connected to the cable 16, 18 according to the fourth embodiment. There are the stripped Head 19 already attached to the leadframe 30 in a suitable configuration.

A suitable configuration of the leadframe 30 can again be produced by separating out individual ones of the bridges 38a-f. The bridges can also be subsequently removed due to their arrangement, i. E. as previously described with reference to FIG. It can be clearly seen that the respective

Conductor portions 46, which still have an insulation, are separated from the actual connection points at the terminals 32a-e. In Figure 14, the perspective view of Figure 13 is further supplemented by two cable manager 47. Such a cable manager 47 is also shown in FIG.

The cable manager 47 has a plurality of groove-like recesses 48, which are dimensioned so that the recesses 48 can receive insulated conductors 46. Furthermore, these depressions 48 may also have further projections, which may allow a clamping of the insulated conductors 46.

In Figure 15 is further a side view of a

Leadframe 30 and cable 16, 18 according to the fourth

Embodiment shown. It can be seen that the cranking can be made larger than the insulation of a conductor 47. This allows conductors 47

different thickness of the insulating layer can be used without these different thicknesses of the

Insulation layer complicate the mounting on the terminals 32a-e. However, it is particularly preferred if the offset corresponds approximately to the thickness of the insulation layer of the conductor 47, since then forces on the conductors 47 or on the connection point at the terminals 32a-e are minimized.

Of course, webs and holders can still be provided in the housing. Also locking means on the housing for secure assembly of the housing halves, z. As locking lugs and locking tabs are known in the art and not shown in this figure.

Reference sign list

Junction box 10

Lower shell 12 upper shell 14

Seal seat 15

Cable 16

Cable opening 17

Cable 18 Stripped conductors 19

Guide openings 20

Contact openings 21

Detent springs 22

Latches 23 locking tabs 24

Lead frame 30

Terminal 32a-e

Current bar 34a-e

Contact 36a-d Bridge 38a-e

Footbridge 39

Plug 40

First housing half shell 41

Second housing half shell 42 Cable bushing 43

Sealing element 44

Recesses for ladder or contact 45

Insulated conductor 46

Cable manager 47 Channel-like depressions 48

Claims

claims

1. Leadframe for an electrical junction box, with multiple connections for electrical conductors, several

Contacts and at least two outer current bars,

characterized in that at least one terminal (32-e) for an electrical conductor between the outer

Current bar (34 a, b) is provided.

2. leadframe according to claim 1, characterized in that the outer current bar (34 a, b) each having a first portion, and that the first portions are substantially parallel to each other.

3. Leadframe according to one of claims 1 or 2, characterized in that at least one connection (32a-e) extends for an electrical conductor in its longitudinal extent transversely to the longitudinal extent of the first portion of the outer current bar (34a, b).

4. Leadframe according to one of the preceding claims, characterized by bridges (38a-f) between the first portions of the outer current bars (34a, b) and the

Terminals (32a-e) for electrical conductors.

5. Leadframe according to one of the preceding claims, characterized in that a second portion of each outer current bar (34 a, b) angled to the first

Section is arranged and that between at least one of the second portions and one of the terminals (32a-e) for an electrical conductor, a bridge (38a-d) is provided.

6. Leadframe according to one of the preceding claims, characterized by at least one inner current bar (34c, d) disposed between the two outer current bars (34a, b).

7. Leadframe according to one of the preceding claims, characterized in that the contacts (36a-d) are aligned perpendicular to a plane defined by the current bar (34a, b) and the terminals (32a-e) plane.

8. Leadframe according to one of the preceding claims, characterized by a rectilinear course of

Current bar.

9. Leadframe according to one of the preceding claims, characterized by fewer contacts (36a-d) than

Connections (32a-e) for electrical conductors.

10. Leadframe according to one of the preceding claims, characterized in that the bridges (38a-f) are provided according to a predeterminable scheme between the terminals (32a-e) for electrical conductors and the current bar (34a, b).

11. Leadframe according to one of the preceding connections, characterized by a spacing of the connections (32a-e) for electrical conductors and current bars (34a-d)

with each other and each other in the range of 1.8 mm to 4 mm.

12. Leadframe according to one of the preceding claims, characterized in that the contacts (36a-d) are arranged in a row and 4 mm to 12 mm apart.

13. Leadframe according to one of the preceding claims, characterized by adjacent end faces of Terminals (32a-e) for electrical conductors present short

Remaining sections of punched webs (39).

14. Leadframe according to one of the preceding claims, characterized in that the surfaces of the terminals (32a-e), which are provided for the conductors to be connected, with respect to the surfaces of the current bar (34a-e) protrude

15. Junction box with a leadframe according to one of the preceding claims.

16. Junction box according to claim 15, characterized by a mechanical coding of the mating face

Contact openings (20, 21) with different geometries.

17. Cable for connecting a plurality of power sources, with a plurality of conductors for guiding different

Potentials in the cable, characterized by a plurality of connection boxes (10) connected to the cable according to claim 15 or 16.

18. Cable according to claim 11, characterized by according to an alternating scheme in the junction boxes (10) arranged bridges (38 a-f).

19. Cable according to one of claims 17 or 18,

characterized by potted junction boxes (10).

20. A method for producing a cable according to any one of claims 17 to 19, characterized in that

the two cable ends (16, 18) at given

Positions are stripped and stripped, the stripped conductors (LI, L2, L3, N, PE) are connected to the terminals of the leadframe (30),

the cable ends (16, 18) and the associated lead frame (30) are inserted into a connection box (10) and the connection box (10) is closed,

the junction box (10) is poured.

21. The method according to claim 20, characterized in that the connections between the terminals (32a-c) for electrical conductors and the current bar (34a, b) by

Separating predetermined bridges (38a-f) between the terminals (32a-c) and the current bars (34a, b) of the leadframe (30) before connecting the stripped conductors (LI, L2, L3, N, PE) to the terminals (32) 32a-e) takes place.

22. The method according to claim 20, characterized in that the connections between the terminals (32a-c) for electrical conductors and the current bar (34a, b) by separating predetermined bridges (38a-f) between the terminals (32a-c) and the current bar (34a, b) of the

Lead frame (30) before pouring the junction box (10) takes place.

23. Plug for connecting an inverter of a solar module to a bus, with one out

Half-shell formed housing having an interior and a Kontaktierungsbereich and with a connecting line between the inverter output and the plug, characterized by a filling of the interior with a potting compound, which connects to the connecting line and the housing (41, 42).

24. Plug according to claim 23, characterized by a housing (41, 42) made of an impact-resistant and UV-resistant material.

25. Plug according to claim 23 or 24, characterized by a sealing of the plug contacts against the interior by a sealing plate.

26. Plug according to claim 23 or 24, characterized by integrally with the half-shells of the housing (41, 42)

molded sealing elements (44a, 44b), which surround the extending from the interior to the plug contacts conductor or the plug contacts themselves.

27. system for transmitting electrical energy,

in particular of a plurality of solar modules, characterized by a plurality of junction boxes

Claim 15 or 16, at least one cable according to one of claims 17 to 19 and plug according to one of claims 22 to 26.