WO2017013139A1

WO2017013139A1 - Solar panel system

Info

Publication number: WO2017013139A1
Application number: PCT/EP2016/067221
Authority: WO
Inventors: Thomas BÜTTNER; Helmut Teschner; Sven Schulze
Original assignee: Asola Technologies Gmbh
Priority date: 2015-07-20
Filing date: 2016-07-20
Publication date: 2017-01-26
Also published as: DE102015111768A1

Abstract

The invention relates to a solar panel system (10, 210, 310) comprising a solar panel (12, 120, 120A, 120B, 120C, 120D, 120F) that has at least one solar cell string (18, 18a, 18b, 18n) formed by a plurality of electrically series-connected solar cells (22), further comprising at least one main junction box (26, 226; 27, 27a, 27b), optionally at least one intermediate junction box (66, 166; 27c), and bypass devices (50; 51) which are detachably plugged into the main junction boxes (26, 226; 27, 27a, 27b) or intermediate junction boxes (66, 166; 27c).

Description

Solar panel system

The invention relates to a solar module system according to the preamble of patent claim 1.

DE 10 201 1 052 928 A1 discloses a solar module system with a solar module and a connection box arranged on a rear side of the solar cell module. The junction box has a receiving space in which a connector, the connecting lines and a plurality of bypass devices has been added. The object of the invention is to provide a solar module system which is easily adaptable to the respective installation conditions and which has a high reliability.

This object is solved by the subject-matter of independent claims 1, 5 and 6. Advantageous embodiments of the invention are specified in the subclaims.

According to the invention, a solar module system is provided, which has a solar module with at least one first and one second solar cell string, each of which is formed by a plurality of solar cells connected in series, the solar cell strings being electrically connected in series with one another. Furthermore, the solar module system has a first solar cell string associated first main junction box and a second solar cell string associated with the second main junction box.

"Assigned" in reference to a main junction box and an intermediate junction box described below means that they each have components, preferably a can terminal, that are electrically connected to the respective solar cell string.

The main junction boxes each have: a junction box housing with a plate-shaped fastening section formed thereon for fastening the junction box housing to the solar module,

a can-type pole terminal for picking up a voltage generated by the solar cells, a pole terminal portion of the junction box for releasably connecting a line device, and a pole contact portion electrically connected to the respective one of the solar cell strings and leading to the pole terminal portion having,

- a can-bypass connection for connecting a bypass

An apparatus, wherein the can by-pass port has a bypass port portion of the junction box body and a bypass port device electrically connected to the respective solar cell string and leading to the bypass port portion.

Furthermore, the solar module system has bypass devices. These each have a bypass diode, which is electrically connected to a contact device, and a bypass housing surrounding the bypass diode and the contact device with a terminal having the contact device, which is detachably plugged into the can bypass connection, so that the bypass - Diode electrically antiparallel, that is connected in parallel but reversed polarity, to the respective solar cell string. When spoken in this application by "bypass diode" or "diode" or "diode circuit" It will be understood by those skilled in the art that these terms are also intended to encompass diodeless bypass circuits. Such bypass circuits are known, for example, in the versions of the type SPV1001 ST Microelectronics, the type LX2400 Microsemi or the type SM7461 1 Texas Instruments.

Since each solar cell string is associated with a main junction box, to each of which a bypass device is plugged, each bypass housing is also provided only in the performance of the solar cell string matched bypass diode or diode circuit. Thus, a heat dissipation away from the bypass diode or the diode circuit is easily possible. For the heat dissipation, it is of particular advantage that the bypass diode or the diode circuit or the diode-less bypass circuit are arranged outside the main junction boxes. The improved heat dissipation away from the bypass diode or from the diode circuit increases the life of the diodes, resulting in a significant improvement in the reliability of the solar module system.

The above-described solar module system forms a basic unit. The solar module system can advantageously have at least one further solar cell string which is electrically connected in series with the first and the second solar cell string. In particular, any natural number of further solar cell strings between the first and the second solar cell string can be electrically connected in series with them. In this way, the solar module system can be extended arbitrarily starting from a basic unit.

In this case, it is particularly advantageously provided that in each case an intermediate junction box is assigned to a respective further solar cell string, each having: a junction box housing having a plate-shaped fastening section formed thereon for fastening the junction box housing to the solar module,

a can-pole terminal formed at least by a pole terminal portion of the junction box housing;

a can by-pass port for connecting a bypass device, the can bypass port having a bypass port portion of the port can body and a bypass port electrically connected to the respective solar cell string and leading to the bypass port portion.

Particularly preferably, the intermediate junction box can be constructed the same as the main junction box. In other words, a main junction box can also be used as an intermediate junction box. As a result, the production cost of the solar module system is reduced and this is easier to assemble, as always the same doses are used, so there is no likelihood of confusion of doses.

In each case, the connection section of a bypass housing of a respective further bypass device is detachably connected to the socket bypass connection of the respective intermediate connection box so that the bypass diode or diode-less bypass circuit is electrically connected in anti-parallel to the respective solar cell string. Since each additional solar cell string is assigned an intermediate junction box, the solar module system starting from the basic unit can be expanded as required by further solar cell strings without having to make design changes to the main junction boxes. This is particularly advantageous when the solar module system is used on building facades. The solar module system can then be adapted by adding or omitting solar cell strings to the space conditions, such as the floor height, in a particularly simple manner. It can also be advantageously provided that in each case a closure device is plugged into the socket pole connection of the respective intermediate connection box. Thus, the penetration of moisture into the intermediate junction box can be prevented.

As already described, at least one further solar cell string between the first and the second solar cell string can be electrically connected in series with the latter. This at least one further solar cell string is assigned in each case an intermediate junction box. This may preferably have a junction box housing with a plate-shaped fastening section formed thereon for fastening the junction box housing to the solar module,

a can by-pass port for connecting a bypass device, the can bypass port having a bypass port portion of the port can body and a bypass port electrically connected to the respective solar cell string and leading to the bypass port portion. Accordingly, the intermediate connection box can in particular be designed differently from the main connection box. It is particularly advantageous that no additional cover, for example in the form of a closure device is needed for the intermediate junction box. This reduces the number of components of the solar module system. This leads in particular to a higher reliability of the solar module system, since the probability of failure is basically reduced with fewer components. Also, a particularly reliable sealing of the intermediate junction box is ensured, since there are fewer openings in the housing through which moisture can penetrate.

The connection section of a respective bypass housing is detachably plugged into the socket bypass connection, with the result that the bypass diode or diode-less byte Pass circuit is electrically connected in anti-parallel to the respective solar cell string.

According to a further embodiment of the solar module system is provided that the solar module system is a solar module with a solar cell string, which is formed by a plurality of electrically connected in series solar cells and having a main junction box.

The main junction box according to this embodiment has:

a junction box housing with a plate-shaped fastening section formed on the junction box housing for fastening the junction box housing to the solar module,

a first and a second can-pole terminal for picking up a voltage generated by the solar cells, the first and second can-pole terminals each having a terminal portion of the receptacle housing for connecting a lead and a terminal electrically connected to the solar cell string have a pole contact section leading to the respective pole connection section,

a can-bypass connection for a bypass device, which has a bypass connection section of the junction box housing and a bypass connection device connected electrically to the solar cell string and leading to the bypass connection section. Furthermore, the solar module system has the bypass device. This comprises a bypass diode, which is electrically connected to a contact device, and a bypass housing surrounding the bypass diode and the contact device with a contact device having terminal portion which is detachably plugged into the socket bypass terminal, so that the bypass diode Alternatively, the diodeless bypass circuit is electrically connected in anti-parallel to the solar cell string. In this way, a basic unit is formed with only one solar cell string. Several such basic units can be extended by electrical conduction devices to a solar generator system with any number of solar cell strings. This is particularly advantageous when the solar module system is used as a façade system, since the solar module system can be adapted as needed, eg to gable slopes or projecting façade areas.

It is also of advantage here that a bypass device is connected to the main junction box assigned to the solar cell string, in which case each bypass

Housing only one in the performance of the solar cell string adapted bypass diode or diode circuit or diode-less bypass circuit is provided. Thus, the heat dissipation away from the bypass diode or the diode circuit or the diode bypass circuit is easily possible. For the improved heat dissipation, it is of particular advantage that the bypass diode or the diode circuit or diode-less bypass circuit are arranged outside the main junction boxes. The improved heat dissipation away from the bypass diode or the diode circuit increases the life of the diodes or other electronic components of the diodeless bypass circuit, resulting in a significant improvement in the reliability of the solar module system.

According to a further embodiment, a solar module system is provided which comprises: a solar module with a solar cell string formed by a plurality of solar cells connected in series,

a first and a second main junction box, each comprising: a junction box housing having a plate-shaped fastening section formed thereon for fastening the junction box

Housing on the solar module

a can-pole terminal for picking up a voltage generated by the solar cells, which has a pole terminal portion of the terminal do sen housing for releasably connecting a line device and having an electrically connected to the respective one of the solar cell string and leading to the Polanschluss portion leading Pol contact portion,

- a can-bypass connection for connecting a bypass

Apparatus, wherein the can by-pass port has a bypass port portion of the junction box body and a bypass port device electrically connected to the respective solar cell string and leading to the bypass port portion,

the bypass device comprising:

a bypass diode or diodeless bypass circuit electrically connected to a contact device,

a bypass housing surrounding the bypass diode or diodeless bypass circuit and the contact device with a terminal portion having the contactor detachably connected to the can bypass terminal so that the bypass diode or diodeless bypass circuit is electrically connected in anti-parallel to the solar cell string is.

In this embodiment as well, the solar module system forms a basic unit with only one solar cell string, which can be expanded by electrical line devices with further such basic units or with basic units of the other embodiments to form a solar generator system with an arbitrary number of solar cell strings , The advantages described above can also be achieved in this way.

In all embodiments, it can preferably be provided that the solar module has a carrier plate and a cover plate, between which the solar cells are arranged. These preferably each have a thickness in the range between 1 and 12 mm, more preferably in the range of 3 to 10 mm and particularly preferably of about 8 mm.

Particularly preferably, the plate-shaped attachment portion of the junction box housing between the support plate and the cover plate located be. This is to be understood in particular that the attachment portion may be located in relation to a respective thickness direction of the support plate and the cover plate between them. As a result, the main and the intermediate junction boxes can be arranged on a front side of the solar module, resulting in a particularly space-saving arrangement of the junction boxes. This is particularly advantageous when using the solar module system as a facade system, since there is often tight space. Furthermore, the junction boxes can be arranged in a better concealed manner, since a viewer usually looks at a main surface of the solar module system facing or facing away from the facade. Thus, the aesthetic impression of the solar module system can be improved in this way.

In all embodiments, provision can advantageously be made for the bypass connection section to be designed as a recess of the junction box housing, and for the connection section of the bypass housing to be designed as a plug. Alternatively, it may be provided that the bypass connection section is designed as a connector formed on the junction box housing and the connection section of the bypass housing as a recess of the bypass housing. In both cases, a particularly simple change of the bypass device in case of damage is possible.

In all embodiments, provision can preferably be made for the connection section of the bypass housing to have a cross-section that is complementary to the bypass connection section of the junction box housing.

In this case, it can be particularly preferably provided that the connection section of the bypass housing has a groove which extends in a longitudinal direction along a lateral surface of the connection section defining the cross section. The bypass port portion then has a web complementary to the groove. This ensures that the bypass device can only be connected to the junction box housing in one way. In particular, this can be prevented that the bypass diode or the diode circuit or diodeless bypass circuit with incorrect polarity is connected to the junction box housing. The bypass device is thus verpolungssicher releasably attached to the junction box housing. Groove and web can also be provided in each case in kinematic reversal at the bypass connection portion of the junction box housing or the connection portion of the bypass housing.

In addition, in all embodiments it can be provided that at least one of the housings of the main junction boxes or the intermediate junction boxes has at least one locking device for mechanically securing the bypass device or a plug-in device in a state connected to the junction box housing.

Preferably, the locking device is formed in one of the following alternative ways:

(a) a latching clip is provided on the junction box housing of the main junction box or the intermediate junction box, wherein the bypass housing has a latching groove for receiving a latching section of the latching latch,

(b) The pole terminal portion or the bypass terminal portion of the junction box of the main junction box or the intermediate junction box and the terminal portion of the bypass housing form an interference fit. It can preferably be provided in all embodiments that the bypass housing has a latching groove, in which engages a latching portion of the latching clip. As a result, the bypass device in the infected state is mechanically secured in a particularly reliable manner to the junction box housing. In all embodiments, it can advantageously be provided that an annular seal is arranged on the connection section of the bypass housing. This is preferably located close to a base portion of the same with respect to a longitudinal direction of the terminal portion of the bypass housing. By the The ring seal ensures additional sealing of the junction box housing, effectively preventing corrosion or other damage caused by moisture penetration. An advantageous development provides that the solar cell strings are arranged in a laminate between at least two adjacent panes or between insulating glass elements or between panes and insulating glass elements, projecting from the laminate contact lugs, which are electrically conductively connected to a contact board to the junction boxes. The connection boxes are preferably dimensioned so small that they can be accommodated at least predominantly in the space between the panes.

A particularly advantageous development provides that the contact board has at least one plus area and at least one minus area, the plus area and the minus area each having two rows of plus contacts and minus contacts lying alternately on a line exhibit. By virtue of such an arrangement, it is possible in a simple manner to configure selectively positive main junction boxes or negative main junction boxes or intermediate junction boxes on a single contact board by means of correspondingly inserted plug-in contact connectors. Through the use of identical parts this is a significant cost reduction possible.

In this case, the contact lugs can be connected to contact tongues in a particularly advantageous manner, wherein the contact tongues each have at least one first contact and at least one second contact which can be brought into engagement with the contact board in different ways such that the connection sockets can be used as a positive main connection box negative main junction box or as an intermediate junction box are configurable. A particularly preferred embodiment provides that the contact lugs can be detachably connected to the contact tongues by means of resilient contact clips. In this way, the contacting during the assembly of the solar modules is considerably simplified. Embodiments of the invention will be explained in more detail with reference to the drawings. It shows:

Fig. 1 is a schematic overview of the electrical interconnection and the

Structure of a solar module system according to the invention according to a first embodiment;

Fig. 2 is a schematic overview of the electrical interconnection and the

Structure of a variant of the solar module system according to the invention according to the first embodiment;

Fig. 3 shows the solar module system according to the first embodiment in a

Top view of the solar module system in a state in which the bypass devices are not infected;

4 is an enlarged view of a detail showing a main junction box of the solar module system according to the first embodiment, in a perspective view;

5 is an enlarged view of a section showing a main junction box of the solar module system according to the first embodiment with an attached bypass device and an attached line device, as a plan view;

6 is an enlarged view of a detail showing an intermediate

Junction box of the solar module system according to another variant of the first embodiment shows, in plan view;

7 shows a solar module system according to a second embodiment in a

Top view of the solar module system, in a state in which the bypass device is not infected;

8 is an exploded view of a main junction box of a solar module system according to the first embodiment;

Fig. 9 is a plan view of a can by-pass port of a junction box;

10 is a plan view of a socket-pole connection of a junction box; 1 1 shows a solar module system according to a third embodiment in a plan view of the solar module system in a state in which the bypass devices are not plugged.

12 is an exploded view of a solar module system with a see between an insulating glass element and a disc arranged in a laminate composite of solar cell strings,

FIG. 13 shows the solar module system according to FIG. 11 in partially assembled state, FIG.

Fig. 14 in the sub-figures 14A-F, several variants of solar modules consisting of individual slices of insulating glass elements and discs or

Insulating glass elements are made, the solar cell strings are embedded in a direction indicated only in Figures 14A and 14D laminate,

15 is an enlarged view of a junction box in an exploded view,

Fig. 1 6 in perspective view configured as a positive junction box

Junction box without the housing,

17 is a perspective view of a configured as a negative junction box junction box without the housing,

18 is a side view of the junction box according to Figure 17,

FIG. 19 is a perspective view of a junction box configured as a junction box; FIG.

20 is a plan view of the contact board with a contact as a positive junction box,

Fig. 21 in another perspective view of a junction box according to

FIG. 1 6,

22 is a plan view of the contact board with a contact as a negative connection box ,,

FIG. 23 is an enlarged view of a bypass device designed as a diode plug; FIG. and

24 shows a schematic view of a circuit of a solar module system with a plurality of solar cell strings with omission of the panes or insulating glass elements. 1 shows a schematic overview of the structure of a solar module system 10 according to the invention according to a first embodiment. According to the first embodiment, the solar module system 10 has a solar module 12, main junction boxes 26, in particular a first and a second main junction box 26a and 26b, and to the respective main junction boxes 26 releasably infected bypass devices 50.

As FIG. 1 shows, the solar module 12 has at least one first and one second solar cell string 18a and 18b, each of which is formed by a multiplicity of solar cells 22 connected in series. The solar cell strings 18a, 18b are electrically connected in series with each other.

In the variant of the first embodiment of the solar module system 10 shown in FIG. 2, a further solar cell string 18n between the first solar cell string 18a and the second solar cell string 18a, 18b is electrically connected in series therewith. According to FIG. 2, only one further solar cell string 18n is arranged between the first and the second solar cell string 18a, 18b by way of example. In general, however, a natural number N of further solar cell strings 18n can be arranged between the first solar cell string 18a and the second solar cell string 18b and can be electrically connected in series therebetween.

The term "between" in relation to the solar cell strings herein generally means that an electrical charge carrier that passes through the solar cells 22, first the first solar cell string 18a, then the other solar cell strings 18n and finally the second solar cell strings. String 18b goes through, and this direction is also reversible.

With respect to the arrangement of the other solar cell strings 18n, as shown in FIG. 2, they may be seen along a longitudinal direction L12 of the solar module 12, behind the first solar cell string 18a and the second solar cell string 18b behind that in the longitudinal direction L12 the solar module 12 seen last further solar cell string 18n be arranged. As shown in FIGS. 1 and 2, the first main junction box 26a is associated with the first solar cell string 18a and the second main junction box 26b is associated with the second solar cell string 18b, that is, they are electrically connected to the respective solar cell string. String 18a, 18b connected can attachment device on. As FIG. 2 shows, each additional solar cell string 18n can be assigned an intermediate connection box 66, that is to say it has a socket connection device 34 which is electrically connected to the respective further solar cell string 18n. The main junction boxes 26 and the intermediate junction boxes 66 each have a junction box housing 28, to which a bypass device 50 is detachably plugged. This plug-in connection and the main and intermediate connection boxes 26, 66 are indicated only schematically in FIGS. 1 and 2 and will be described in more detail below.

As FIGS. 1 and 2 further show, the bypass device 50 has a bypass diode or a diodeless bypass circuit 56. Both the main junction boxes 26 and the intermediate junction boxes 66 each have the can connector 34 electrically connected to the respective solar cell string 18a, 18b, 18n. In this case, the can-connection device 34 and the bypass device 50 are each designed such that the bypass diode or diode-less bypass circuit is electrically connected in anti-parallel to the respective solar cell string 18a, 18b, 18n.

3 shows a solar module system 10 according to the first embodiment in a plan view of the solar module 12. According to the representation of FIG. 3, the solar module system 10 has a solar module 12 with a first solar cell string 18a, a second solar cell string 18b and another solar cell string 18n. The solar cell strings 18a, 18b, 18n are each formed by a plurality of solar cells 22 connected in series and electrically connected in series with each other. The further solar cell string 18n is arranged between the first and the second solar cell string 18a, 18b and connected in series electrically between them. The further solar cell string 18n, as shown in Fig. 1, also omitted. Also, additional additional solar cell Strings 18n may be disposed between the first and second solar cell strings 18a, 18b.

As shown in FIG. 3, the solar module system 10 has a first main junction box 26a associated with the first solar cell string 18a and a second main junction box 26b associated with the second solar cell string 18b. Optionally, as shown in FIG. 3, an intermediate junction box 66, which is associated with the further solar cell string 18n, may be provided. The first and second main junction box 26a, 26b, or generally a main junction box 26, each have a junction box housing 28 having a plate-shaped mounting section 28a formed thereon for attaching the junction box enclosure 28 to the solar module 12. The attachment portion 28a may in particular be integrally formed, ie in material unit, with the junction box housing 28. Alternatively, the attachment portion 28a can also be connected to the junction box 28, for example by an adhesive connection.

As shown in FIG. 4, the main junction boxes 26 further include a can terminal 30 for picking up a voltage generated by the solar cells 22. The can-type pole terminal 30 is formed by a terminal portion 32 of the terminal box body 28 and a pole contact portion 36a electrically connected to each of the solar cell string 18a, 18b and leading to the terminal portion 32.

The pole connection section 32 may, as shown in FIG. 4, be formed by a recess of the junction box housing 28, so that an end section of a line device 82 in the form of a plug can be detachably inserted into the recess. Alternatively, it may be provided that the pole-connection section 32 is designed as a section formed on the junction box housing 28 and in particular projecting therefrom, which forms a plug (not shown), such that an end section of a recess has a recess Line device 82 is releasably attachable to the plug. overall In general, the pole connection section 32 is thus designed for detachably coupling a clip-on device, wherein the clip-on device 76 may be a line device 82 or a closure device 68. In each case, a lateral surface of the pole connection section 32 designed as a plug or a recess defines a pole connection longitudinal direction L32 along which an attachment device 76 is connected.

The can-pole terminal 30 is thus provided for releasably connecting a clip-on device 76.

The pole contact portion 36a is electrically connected to the respective solar cell string 18a, 18b. In the embodiment of FIG. 3, the pole contact portion 36a of the first main junction box 26a is the first solar cell string 18a, the pole contact portion 36a of the second main junction box 26b is the first solar cell string 18b, and the pole contact portion 36a of the intermediate junction box 66 electrically connected to the other solar cell string 18n.

The pole terminal section 32 has the pole contact section 36a, wherein the pole contact section 36a can be embodied in particular as an elongate rod which projects into the pole terminal section 32 with a first end section (see FIG. 4).

The main junction boxes 26 further include a can by-pass port 40 for connecting a bypass device 50. The can by-pass port 40 is formed through a bypass port portion 42 of the junction box 28 and a bypass port 44 electrically connected to the respective solar cell string 18 a, 18 b and leading to the bypass port portion 42.

The bypass connection section 42 can, as shown in FIG. 4, be formed by a recess of the junction box housing 28, so that a connection section 54 formed as a connector of a housing of a bypass preventer. direction 50 is releasably inserted into the recess. Alternatively, it can be provided that the bypass connection section 42 is formed as a section formed on the junction box housing 28 and in particular protruding therefrom, which forms a plug (not shown), so that a connection section of the bypass section has a recess. Device (not shown) releasably attachable to the plug. Generally, the bypass port portion 42 is thus provided for releasably coupling a bypass device 50 to the main junction box 26. In both cases, a lateral surface of the bypass connection section 42 designed as a plug or as a recess defines a bypass connection longitudinal direction L42 along which the bypass device 50 is plugged.

As shown in FIGS. 3 and 4, the main junction boxes 26 each have a can connector 34. This comprises: a first contact piece 36 having a pole contact section 36a and a bypass contact section 36b, a second contact section 38, located opposite to it.

a first contact band 36k extending between the first contact piece 36 and a first conductor band 22a,

a second contact band 38k extending between the second contact piece 38 and a second conductor band 22b.

Between the first and the second conductor strip 22a, 22b, the solar cells 22 in each case one of the solar cell strings 18a, 18b or 18n are electrically connected in series. A first conductor strip 22a of a further solar cell string 18n is for this purpose electrically connected to a second conductor strip 22b of the first solar cell string 18a or of an additional further solar cell string 18n. A second conductor band 22b of another solar cell string 18n is electrically connected to a first conductor band 22a of the second solar cell string 18b or an additional further solar cell string 18n. In the variant of the solar module system 10 shown in FIG. 1, the second conductor strip 22b of the first Solar cell strings 18a connected to the first conductor strip 22a of the second solar cell string 18b.

The bypass contact portion 36 b and the second contact piece 38 together form the bypass connection device 44.

The solar module system 10 further includes the bypass devices 50. The bypass devices 50 each include a bypass diode or diodeless bypass circuit 56 that is electrically connected to a contactor 58. Next, the bypass devices 50 have a bypass diode 56 or diode bypass bypass circuit 56 and the contact device 58 surrounding bypass housing 52 with a contact device 58 having terminal portion 54 which is detachably connected to the doses bypass port 40, so that the bypass Diode or diodeless bypass circuit 56 is electrically connected in anti-parallel to the respective solar cell string 18a, 18b.

For a clearer explanation of the solar module system 10, FIGS. 3 and 4 show the bypass devices 50 in a state which is not connected to the main or intermediate connection boxes 26 and 66, respectively. A Dar- position of the infected state, which is required for the operation of the solar module system is shown in Fig. 5 for a variant of the junction box, in which the bypass port portion 42 is designed as a recess.

The connection portion 54 of the bypass housing 52 may, as shown in FIGS. 3 and 4, be designed as a plug. The bypass devices 50 can then be detachably connected to the port portion 54 to the doses bypass port 40. In particular, the plug can be plugged into a bypass connection section 42 of the junction box housing 28 designed as a recess. The connecting portion 54 of the bypass housing 52 may be designed as a recess of the bypass housing 52 (not shown). The bypass device can then be plugged into a bypass connection section 42 of the junction box housing 28 designed as a plug (not shown). The contact device 58 is provided for electrically contacting the bypass diode or diodeless bypass circuit 56 with the bypass connection device 44 of the main connection box 26 or the intermediate connection box 66. The contact device 58 may be formed by two elongate rods having a first end portion located at least partially in the terminal portion 54 and a second end portion opposite to the first end portion, at each of which a terminal of the bypass diode (cathode and anode) or diodeless bypass circuit 56 is electrically contacted. The contact device 58 may additionally comprise two adjoining the second end portion of the elongated rods of the contact device 58 elongated contact plates, to which the terminals of the bypass diode or diode bypass circuit 56 are contacted. As a bypass diode 56 is preferably exactly one diode or bypass circuit or diode-less bypass circuit is provided, for example, a diode with a housing type TO-220 or a housing type DPAK or D2PAK .. However, it may also be provided that, for example, two or more diodes connected in series or in antiparallel are provided. In general, one bypass device 50 is provided for each solar cell string 18a, 18b, 18n, which has a diode 56 or a diode circuit or diode-less bypass circuit which is connected in antiparallel to the respective solar cell string 18a, 18b, 18n ,

The aforementioned embodiment of the bypass device 50 has the advantage that in the case of a shading of one or more solar cell strings 18a, 18b, 18n of the bypass device 50, which connected in parallel to the respective shaded solar cell string 18a, 18b, 18n antiparallel Diode or diode circuit or diode-less bypass circuit 56, only the falling at the respective diode or the diode circuit or diode-less bypass circuit 56 loss power is supplied. Since each bypass housing 52 has only one diode or diode bypass circuit 56, the diodes or diode circuits or diode bypass circuit 56 of different solar cell strings 18a, 18b, 18n can not heat each other. WEI terhin is also the available cooling area per diode or diode-less bypass circuit 56 is very large, which facilitates the heat dissipation from the diode or the diode-less bypass circuit 56 away. This improves the performance and the life of the diodes 56 and other electronic components of the diode-less bypass circuit 56 and increases the reliability of the solar module system 10 as a whole.

In the variant of the solar module system 10 shown in FIG. 3, the latter has a further solar cell string 18n, which is electrically connected in series with the first and the second solar cell string 18a, 18b. As already stated above, a plurality of further solar cell strings 18n can also be provided. Each additional solar cell string 18n is assigned an intermediate junction box 66 in each case, that is to say it has an outlet connection device 34 that is electrically connected to the respective further solar cell string 18n.

The intermediate junction boxes 66 may have the above-described features of the main junction boxes 26 and in particular may be constructed identically thereto. This has the advantage that only one single terminal box type can be used for a solar module system 10. This facilitates the assembly of the solar module system 10, since the connection boxes can not be confused. Also, the production cost is low, because the manufacturing devices only need to be set to a type of junction box.

The intermediate junction box 66 can in particular be constructed as shown in FIG. 4: The intermediate junction box 66 accordingly has a junction box housing 28 with a plate-shaped fastening section 28 a formed thereon for fastening the junction box 28 to the solar module 12 on. Furthermore, the intermediate connection box 66 has a socket pole connection 30, which is formed at least by a pole connection section 32 of the junction box housing 28. The pole connection section 32 can, as already described for the main junction box 26, be designed as a recess of the junction box 28 or alternatively as a plug. Also, the intermediate junction box 66 may also have a pole contact section 36a leading to the pole connection section 32, as already described for the main junction box 26, leading to the pole connection section 32. Fig. 3 shows such an embodiment. At the can-pole terminal 30 of the respective intermediate junction box 66 each have a closure device 68 may be infected. The closure device 68 may, for example, as shown in Fig. 3, be formed as a plug. Alternatively, the closure device can also be designed as a cap, which is slipped over or plugged in via a pole connection section 32 in the form of a plug.

Intermediate junction box 66 further includes a can by-pass port 40 for connecting a bypass device 50. The can by-pass connection 40 is formed by a bypass connection section 42 of the connection box housing 28 and a bypass connection device 44 connected electrically to the respective solar cell string 18 a, 18 b and leading to the bypass connection section 42.

The bypass connection section 42 may, as already described for the main junction box 26, be designed as a recess of the junction box 28 or as a plug.

In each case, the connection section 54 of a bypass housing 52 of a respective further bypass device 50 is detachably connected to the can by-pass connection 40 of the respective intermediate connection box 66, so that the bypass diode or diode-less bypass circuit 56 is electrically antiparallel to the respective solar cell string 18n is switched. The bypass device 50 is constructed as described above. Alternatively or in addition to an intermediate junction box 1 66 having the above-described construction, the solar module system 10 may also have an intermediate junction box 1 66 constructed as shown in FIG. This intermediate connection box 1 66 is assigned to one of the respective further solar cell strings, that is to say it has a socket connection device 34 connected electrically to the respective further solar cell string 18 n.

The intermediate connection box 1 66 has a junction box housing 128 with a plate-shaped fastening section 128a formed thereon for fastening the junction box 28 to the solar module 12. The fastening section 128a can in particular be formed in one piece, ie in a material unit, with the junction box 128 be. Alternatively, the mounting portion 128a may also be connected to the junction box 128, e.g. be connected by an adhesive connection.

The intermediate junction box 1 66 further includes a doses bypass port 140 for connecting a bypass device 50, the doses bypass port 140 passing through a bypass port portion 142 of the port housing 128 and electrically connected to the respective solar cell string 18n connected and leading to the bypass port portion 142 leading bypass connection device 144 is formed.

The bypass connection section 142 can, as shown in FIG. 6, be formed by a recess of the junction box housing 128 so that a connection section 154 of a housing of a bypass device 50 designed as a plug can be detachably inserted into the recess. Alternatively, it may be provided that the bypass connection section 142 is designed as a section which is formed on the junction box housing 28 and in particular protrudes therefrom, forming a plug (not shown), such that a connection section having the recess Bypass device (not shown) releasably attachable to the plug. Generally, the bypass port portion 142 is thus for releasably coupling a bypass device 50 provided to the intermediate junction box 166. In both cases, a lateral surface of the bypass connection section 42 designed as a plug or a recess defines a bypass connection longitudinal direction L142, along which the bypass device 50 is plugged.

As shown in FIG. 6, the inter-junction boxes 1 66 each have a can connector 134. This comprises: a first contact piece 136 with a bypass connection portion 136b, a second contact piece 138,

a first contact band 136k extending between the first contact piece 136 and a first conductor band 22a,

a second contact band 138k extending between the second contact piece 38 and a second conductor band 22b.

The bypass terminal portion 136 b and the second contact piece 38 together form the bypass terminal device 144.

The connection section 54 of a respective bypass housing 52 is detachably plugged into the can by-pass connection 140, so that the bypass diode or diode-less bypass circuit 56 is electrically connected in antiparallel to the respective solar cell string 18n.

According to a second embodiment of the solar module system, a solar module system 210, as shown in FIG. 7, has a solar module 12 with a solar cell string 18. The solar cell string 18 is formed by a plurality of solar cells 22 electrically connected in series.

As shown in Fig. 7, the solar module system 210 has a main junction box 226 associated with the solar cell string 18. "Assigned" in this context, as in the first embodiment, means that the main junction box 226 is electrically connected to the main junction box 226 Solar cell string 18 connected can connector 234. The main junction box 226 has a junction box housing 228 having a plate-shaped mounting section 228 a formed thereon for attaching the junction box 228 to the solar module 12. The fastening section 228a may in particular be formed in one piece, that is to say in material unit, with the junction box housing 228. Alternatively, the attachment portion 228a may also be connected to the housing, eg, by an adhesive bond. As shown in FIG. 7, the main junction box 226 further includes a first can terminal 230a and a second can terminal 230b each for picking up a voltage generated by the solar cells 22. The first and second can-pole terminals 230a, 230b are respectively connected to a pole terminal portion 232a, 232b of the junction box housing 228 and to the first and second pole terminal portions 232a electrically connected to the solar cell string 18, respectively or 232b leading pole contact portion 236a and 238a, respectively.

As shown in FIG. 7, the first and the second pole connection sections 232a and 232b can each be formed by a recess of the junction box housing 228 so that an end section of a line device 82 designed as a plug can be detachably inserted into the recess. Alternatively, it can be provided that the first and the second pole connection section 232a and 232b are each designed as a section formed on the junction box housing 228 and projecting therefrom, which forms a plug (not shown) in that a recess section of a line device 82 can be detachably attached to the plug. In general, the first and the second pole connection sections 232a and 232b are thus designed for detachably coupling a clip-on device, wherein the clip-on device 76 may be a line device 82 or a closure device 68. It is also conceivable that, for example, the first pole connection section 232a is designed as a recess and the second pole connection section 232b is designed as a plug or vice versa. In each case, a lateral surface of the first or second pole terminal section 232a or 232b designed as a plug or a recess defines a first or second pole terminal longitudinal direction L232a or L232b, along which the clip device 76 is connected. The first can-pole terminal 230a and the second can-pole terminal 230b are thus respectively provided for detachably connecting a clip-on device 76.

The first pole contact section 236a is electrically connected to the solar cell string 18, in particular by means of a first conductor strip 22a. The first pole terminal section 232a has the first pole contact section 236a, wherein the first pole contact section 236a can be embodied in particular as an elongate rod which projects with a first end section into the first pole terminal section 232a. The second pole contact section 236b is electrically connected to the solar cell string 18, in particular by means of a second conductor strip 22b. The second pole connection section 232b has the second pole contact section 238a, wherein the second pole contact section 238a can be embodied in particular as an elongate rod, which projects into the second pole connection section 232b with a first end section.

The main junction box further includes a can by-pass port 240 for connecting a bypass device 50. The can by-pass port 240 is formed through a bypass port portion 242 of the junction box 228 and a bypass port 244 electrically connected to the solar cell string 18 and leading to the bypass port portion 242. The bypass connection section 242 can, as shown in FIG. 7, be formed by a recess of the junction box housing 228, so that a connector section 54 of a housing of a bypass device 50 can be detachably inserted into the recess. Alternatively, it can be provided that the bypass connection section 242 is designed as a section which is formed on the junction box housing 228 and in particular protrudes therefrom, forming a plug (not shown), such that a connection section having a recess is the bypass Device (not shown) releasably attachable to the plug. Generally, the bypass port portion 242 is thus provided for releasably coupling a bypass device 50 to the main junction box 226. In both cases, a lateral surface of the bypass connection section 242, which is shown as a plug or a recess, defines a bypass connection longitudinal direction L242, along which the bypass device 50 is plugged.

As shown in FIG. 7, the main junction boxes 226 include a can connector 234. This comprises: a first contact piece 236 with the first pole contact portion 236a and a bypass contact portion located opposite thereto

236b

a second contact piece 238,

a first contact band 236k extending between the first contact piece 236 and the first conductor band 22a,

a second contact band 238k extending between the second contact piece 238 and the second conductor band 22b, and

the second pole contact portion 238a electrically connected to the second contact band 238k. Between a first and a second conductor strip 22a, 22b, the solar cells 22 of the solar cell string 18 are electrically connected in series. The bypass contact portion 236b and the second contact piece 238 together form the bypass connection device 244.

The solar module system 210 further includes the bypass device 50. The bypass devices 50 include a bypass diode or diodeless bypass circuit 56 that is electrically connected to a contactor 58. Furthermore, the bypass device 50 has a by-pass diode or diode-less bypass circuit 56 and a bypass device 52 surrounding the contact device 58 with a contact device 58 having terminal portion 54 which is detachably connected to the doses bypass port 40, so the bypass diode or diodeless bypass circuit 56 is electrically connected in anti-parallel to the respective solar cell string 18a, 18b.

Incidentally, the bypass device 50 is implemented as described for the first embodiment of the solar module system 10.

In FIG. 7, to better illustrate the solar module system 210, the bypass device 50 is shown in a state not connected to the main junction box 226. During operation of the solar module system 210, the bypass device 50 is plugged into the main junction box 226, e.g. in the manner shown in Fig. 5, when on the junction box 228 of the bypass port portion 242 is designed as a recess.

In the solar module system 210 according to the second embodiment, there is the advantage that a plurality of such solar module systems 210 can be electrically connected in series with one another in that a second pole contact section 238a of a solar module system 210 is electrically connected to a first pole contact section 236a of another solar module system 210 can be connected. This is possible in a particularly simple manner due to the realization of the first and second doses pole terminal 230a, 230b with a first and a second pole terminal section 232a, 232b, respectively, since electrical line device 82 can be detachably connected to corresponding end sections first or into a second pole terminal section 232a or 232b. can be tilted. In this way, depending on the application, any expandable solar generators system can be created, which is formed from a customized number of solar module systems 230. The provision of a bypass device 50 embodied as described above on the solar module system 210 has the advantage that in the case of shading of the solar cell string 18 of the bypass device 50, the diode or the anti-parallel connected to the shaded solar cell string 18 or diode Diode circuit or diode-less bypass circuit 56, only the falling at the respective diode or the diode circuit or diode-less bypass circuit 56 power loss is supplied. This is particularly advantageous if, as described above, a plurality of solar module systems 210 are connected to form a solar generator system. Since each bypass housing 52 has only one diode or diode or bypass diode 56, the diodes or diode circuits or diodeless bypass 56 of different solar cell strings 18a, 18b, 18n can not heat each other. Furthermore, the available cooling area per diode 56 is very large, which facilitates the heat dissipation away from the diode or from the diode-less bypass circuit 56. This improves the performance and life of the diodes or diode bypass circuit 56 and increases the overall reliability of the solar module system 210.

According to a third embodiment of the solar module system, a solar module system 310, as shown in FIG. 11, has a solar module 12 with a solar cell string 18. The solar cell string 18 is formed by a plurality of solar cells 22 electrically connected in series.

As shown in FIG. 11, the solar module system 310 has two main junction boxes 26, in particular a first and a second main junction box 26a, 26b. The first and second main junction boxes 26a and 26b are basically configured with the same features as the main junction boxes 26 of the solar module system 10 according to the first embodiment. In the following, only the differences are discussed. As shown in FIG. 11, the pole contact portion 36a of the first main junction box 26a is electrically connected to the solar cell string 18, in particular to a first conductor band 22a. Furthermore, the pole contact section 36a of the second main junction box 26b is electrically connected to the solar cell string 18, in particular by means of a second conductor strip 22b. The solar cells 22 are connected in series between the first and second conductor strips 22a, 22b. Similar to the second embodiment, in the third embodiment of the solar module system 310, the second contact piece 38 of the can connector 34 of the first main junction box 26a is electrically connected to the second conductor band 22b. In contrast to the first embodiment, in the third embodiment of the solar module system 310, the second contact piece 38 of the can connector 34 of the second main junction box 26a is not electrically connected to the second conductive band 22b. In particular, the second contact band of the can-connecting device 34 of the second main junction box 26 b is made shorter than in the first embodiment, so that this does not establish an electrical connection between the second conductor strip 22 b and the second contact piece 38.

To the can-bypass connection 40 of the first main junction box 26a, a bypass device 50 as already described above is plugged. The bypass diode or diode-less bypass circuit 56 is thus electrically connected in anti-parallel to the solar cell string 18.

As shown in FIG. 11, a clip-on device 68 can be connected to the can by-pass connection 40 of the second main connection box 26b. The clip 68 may be formed by a bypass dummy 350 as shown in FIG. The bypass dummy device 350 has a bypass housing 352 with a connection portion 354 which is detachably attachable to the can bypass port 40.

The bypass dummy device 350 may have the same features as a bypass device 50 described above, and the bypass dummy device 350 is preferably not provided with a bypass diode or diodeless bypass circuit 56. In particular, the connection section 354 of the bypass housing 352 can have the same features as the connection section 54 of the bypass housing 52 described above. The connection section 354 of the bypass housing 352 can also have the contact device 58.

In FIG. 11, the bypass device 50 and the bypass dummy device are not shown plugged into the main 26 for a clearer explanation of the solar module system 310. In operation of the solar module system 310, the bypass device 50 is plugged into the first main junction box 26a (the optional bypass dummy 350 is plugged into the second main junction box 26b), e.g. in the manner shown in FIG. 5, when the bypass connection section 42 is designed as a recess on the junction box 28.

In the solar module system 310 according to the third embodiment, there is an advantage that a plurality of such solar module systems 310 can be electrically connected in series with each other by electrically connecting the pole contact portion 36a of the second main junction box 26b of a solar module system 310 a pole contact portion 36a of a first main junction box 26a of another solar module system 310 is connected. This results in the advantages mentioned in relation to the second embodiment in an analogous manner. In all embodiments of the solar module system 10, 210, 310, the solar module 12 may have at least one flat extending support plate 14 or a likewise extending cover plate 1 6, in particular, the solar module 12, the cover plate 1 6 and the support plate 14 have. It can be provided that the solar cells 22 are arranged with respect to a thickness direction D12 of the solar module 12 between the cover plate 14 and the support plate 14. It can further be provided that with respect to the thickness direction D12 of the solar module 12 between the cover plate 14 and the support plate 14, a connection layer (not shown) is provided from a preferably transparent plastic, which surrounds the solar cells 22 at least partially and the support plate 14 flat with the cover plate 1 6 connects.

Furthermore, in all embodiments of the solar module system 10, 210 may be provided that the plate-shaped mounting portion 28a, 128a, 228a of the junction box housing 28, 128, 228 between the support plate 14 and the cover plate 1 6 is located.

In this context, "between" means that the fixing portion 28a, 128a, 228a is located between the support plate 14 and the cover plate 16 with respect to the thickness direction D12.

Preferably, the entire attachment portion 28a, 128a, 228a is located between the support plate 14 and the cover plate 16, that is, an edge portion of the attachment portion 28a, 128a, 228a preferably not laterally over an edge of the solar module 12 with respect to a longitudinal direction L12 survives.

As shown in FIGS. 3 to 8, the attachment portion 28a, 128a, 228a may include a plurality of through holes d28, d128, d228. This applies regardless of the embodiment of the solar module system 10, 210, 310. The optionally provided in the thickness direction D12 between the support plate 14 and the cover plate 16 plastic compound layer (not shown) can be introduced in the liquid or pasty state, these through holes d28, d128 , d228 penetrate and thus ensures a positive connection of the fastening section 28a, 128a, 228a with the solar module 12.

In all embodiments of the solar module system 10, 210, the connection section 54 of the bypass housing 50 may be complementary to the bypass housing 50. Passport section 42, 142, 242 of the junction box 28, 128, 228 have executed cross-section. In this case, in particular, a lateral surface 54a of the connection section 54 of the bypass housing 50 has a surface structure that is complementary to a surface structure of the bypass connection section 42, 142, 242 of the junction box housing 28, 128, 228.

In cross-sections of the connecting section 54 of the bypass housing 50 and of the bypass connection section 42, 142, 242 of the junction box housing 28, 128, 228 that are executed complementary to one another, it may be provided that the connection section 54 of the bypass housing 50 has a groove 70 and the bypass connection section 42 , 142, 242 has a web 72 formed to be complementary to the groove 70. This is e.g. shown in Figs. 4, 8 and 9. As best seen in Fig. 4, the groove 70 extends in a longitudinal direction L54 along a lateral surface 54a of the terminal portion 54. The lateral surface 54a defined in the longitudinal direction L54, the cross section of the connecting portion 54. The groove 70, as in the figures as shown in or opposite to the longitudinal direction L54 have a rectangular cross-section. Alternatively, the groove 70 may be e.g. also have a U, V or W-shaped cross-section.

As best seen in FIG. 9, the bypass port portion 42, 142, 242 of the junction box housing 28, 128, 228 has a web 72 which has a cross-section shaped to be complementary to the groove 70.

FIGS. 4 and 9 show these features for a connector portion 54 of the bypass device 50 and a bypass port portion 42, 142, 242 of the junction box 28, 128, 228. However, the groove 70 may also be on a connecting section 54 of the bypass device 50 designed as a recess of the bypass housing 52 and the web on a bypass connection section 42, 142, 242 of the junction box 28, 128, 228 designed as a plug. be seen. It can also be provided that the groove 70 is formed on the bypass connection section 42, 142, 242 of the junction box housing 28, 128, 228 and the web 72 on the connection section 54 of the bypass device 50.

By providing a groove 70 or a web 72 at the bypass connection section 42, 142, 242 of the junction box housing 28, 128, 228 and the correspondingly complementary component (groove 70 or web 72) at the connection section 54 of the bypass device 50 It is ensured that the bypass device can only be detachably connected to the junction box housing 28, 128, 228 if the crossbar 72 can engage in the groove 70. This ensures a polarity-proof connection. That is, the diode or diodeless bypass circuit 56 is connected with its poles (anode, cathode) to a respective solar cell string 18, 18a, 18b, 18n in such a way that it is connected in anti-parallel with it and that the diode or diode-less bypass Circuit 56 is switched in the event of shading in the forward direction.

As shown in FIG. 10, the pole terminal portion 32 of the main junction boxes 26 may also have at least one land 86a, 86b extending along the pole terminal longitudinal direction L32. 10 shows a main junction box 26 having a pole terminal portion 32 having a first land 86a and a second land 86b, the first and second lands 86a, 86b extending along the pole terminal longitudinal direction L32, respectively, and to each other opposite sections of the lateral surface of the pole-connecting portion 32 forming recess of the junction box 28 are located. If the pole connection section 32 is designed as a plug, the webs 86a, 86b may be located on opposite sections of the lateral surface of the plug connection section 32 forming the plug. Although FIG. 10 shows a main junction box 28 of a solar module system 10 according to the first embodiment. However, the first and second pole terminal portions 232a, 232b of a main junction box 228 of a solar module system 210 according to the second embodiment may also be correspondingly Webs 82a, 82b have. Furthermore, provision may be made for a pole terminal section 32, 232a, 232b, on which a positive polarity of the voltage generated by the solar cells 22 is tapped, to have webs with a first cross-sectional shape, eg rectangular, and a pole terminal section 32 , 232a, 232b, at which a negative polarity of the voltage generated by the solar cells 22 is tapped, webs having a second of the first different cross-sectional shape, for example, V-shaped. This ensures that terminal contacts of a consumer are always connected according to their polarity to the solar module system 10, 210. The can Polanschluss 30, 230 is thus reverse polarity.

As shown in FIGS. 3 to 10, in all embodiments it can be provided that the junction box housing 28, 128, 228 has at least one locking device 74. Such a locking device 74 may have both the main junction boxes 26 and the intermediate junction boxes 66, 1 66. The locking device 74 serves for the mechanical securing of the bypass device 50 or an attachment device 76 in a state connected to the junction box housing 28, 128, 228. The junction box housing 28, 128, 228 of the main junction box 26, 226 or the intermediate junction box 66, 1 66, as a locking device 74, for example, as shown in Figs. 3 to 6 and 8 to 10, a locking bracket 78 have , The latching clip 78 may be formed in one piece, that is to say in a material unit, with the junction box housing 28, 128, 228 or with this, e.g.

be connected by an adhesive or welded joint.

As shown, for example, in FIG. 5, the latching clip 78 has a base section 78b located on the junction box housing 28, 128, 228 and in particular connected thereto, and a latching section 78a opposite to the base section 78b. The latching portion 78a and the base portion 78b are interconnected by an intermediate portion 78c defining a longitudinal direction L78 of the latching bracket 78. The latching portion 78a projects from the intermediate portion 78c with an extension transverse to the longitudinal direction L78. The latching clip 78 protrudes from the junction box housing 28, 128, 228 in such a way that the longitudinal direction L78 of the latching clip 78 along the pole connection longitudinal direction L32, L232a, L232b of the respective pole connection section 32, 232a, 232b or the bypass connection longitudinal direction L42, L142, L242 of the respective bypass connection section 42, 142, 242 extends.

Also, a locking device 74, such as e.g. 7, may be formed in that the pole connection section 32, 232a, 232b or the bypass connection section 42, 142, 242 of the junction box housing 28, 128, 228 of the main junction box 26, 226 or the intermediate connection box. Junction box 66, 1 66 and the connection portion 54 of the bypass housing 52 form a press fit. In this case, in particular, a connection section 54 designed as a plug can have a cross-sectional diameter which forms an interference fit with an inner diameter of a bypass connection section 42, 142, 242 formed as a recess of the connection box housing 28, 128, 228.

Furthermore, it can be provided in all embodiments that the bypass housing 52 has a latching groove 80, as shown in Fig. 4. If a locking device 74 in the form of a latching clip 78 configured as described above is provided on the connection box 26, 66, 1 66, 226, the latching groove 80 can receive the latching section 78a of the latching clip 78. In particular, the latching portion 78a engages in the locking groove 80 a. Thereby, the bypass device 50 is mechanically secured in the connected to the junction box housing 28, 128, 228 state.

Furthermore, in all embodiments, an annular seal 82 may be arranged on the connection section 54 of the bypass housing 52. As shown in FIG. 4, the ring seal 84 is preferably arranged with respect to the longitudinal direction L 54 of the terminal portion 54 near a base portion 53 of the bypass housing 52. By the annular seal 82 ensures that when the bypass device 50 is plugged into the junction box 28, 128, 228, no moisture can penetrate into the interior of the can. 8 shows a variant of a junction box 28 of a main junction box 26. However, this design of the housing may also be provided for the junction box housing one of the variants of the intermediate junction boxes 66,166 or the main junction box 226.

As shown in FIG. 8, the junction box housing 28 may be divided along the path of the mounting section 28a into a first junction box section 28b and a second junction box section 28c. The first and the second junction box section 28b, 28c may in particular be constructed identically. It can also be provided that the first junction box section 28b has the latching clip 78 and the web 72, while these components are missing in the otherwise identically constructed second junction box section 28c. After mounting the can connector 34, the junction box sections 28b, 28c are connected together.

Several variants of solar module systems are shown in FIGS. 12 to 24, in which the solar cell strings 18, 18 a, 18 b, 18 n are embedded in a laminate 136 that is located between an outer pane 122 and an inner pane 124. The outer pane 122 and / or the inner pane 124 may be replaced by insulating glass elements 126 and 128, whereby three-pane insulating glass elements 129 may be used. The laminate 136 with the solar cell strings 18, 18a, 18b, 18n embedded therein can also be part of the prefabricated insulating glass elements 126 or 128 or triple-pane insulating glass elements 129.

The laminate 136 is shown by way of example only in FIGS. 14A and 14D, but is also present in the other embodiments according to FIG. 14 as element surrounding the solar cells 18. The solar cell strings 18, 18a, 18b, 18n have out of the laminate 136 protruding connectors 19 with tabs 20 at their ends. The connectors 19 with the contact lugs 20 protrude upward into a space between the panes 138, which is indicated by way of example only in FIG. 14E. The space between the panes 138 is between the outer pane 122 and the inner pane 124 or between the outer pane and the inner pane of the respective outer or inner insulating glass element 126, 128, 129.

The space between the panes 138 is wide enough in all embodiments, and deep enough to have main outlets 26, 226, 27, 27a, 27b, or intermediate outlets 66, 1, 66, and 27c, respectively, through a reduced inner pane dimension therein at least largely, but preferably completely absorb.

The contact lugs 20 are passed through recesses 41 6 and 426 in a contact board 400 and connected there by means of resilient contact clips 450 with contact tongues 440 mechanically and electrically conductive. The contact boards 400 form part of the main junction boxes 27, 27a and 27b and the inter-junction boxes 27c. They are arranged in a housing 271 indicated in FIGS. 12 and 15.

The contact tongues 440 have a contact plate 444 and at least two downwardly extending contacts 441 and 442, respectively. These contacts 441 and 442 can be brought into electrically conductive connection by different insertion of the contact tongues 440 with different positive contacts 4221, 4222, 4224 and 4225 or different negative contacts 4241, 4242, 4243 or 4245.

The plus contacts 4221, 4222, 4224, and 4225 are in a plus region 422, and the minus contacts 4241, 4242, 4243, or 4245 are disposed in a minus region 424 that is in a right side region best seen in FIG 420 of the contact board 400 are arranged. The contact board 400 also has a left portion 410 that is separated from the right portion 420 by an isolation trench 430. The plus contacts 4221, 4222, 4224 and 4225 and the minus contacts 4241, 4242, 4243 or 4245 are, as shown in FIG. 20, alternately arranged in two parallel rows of contact openings extending along the contact board 400. As a result, when the contact tongues 440 according to FIGS. 1 6, 20 or 21 are inserted, the negative contact 415 in the left region 410 and the negative contact 4241 in the right region 420 can be connected by means of a first contact tongue 440 and the negative contact 4222 and the negative Contact 4223 are contacted in the right area 420 by means of a second contact tongue 440. The contact plates 444 of the two contact tongues 440 are thereby positioned over the recesses 41 6 and 426 so that the contact lugs 20 can be placed opposite them in the recesses 41 6 and 426, respectively. The contact lugs 20 are then mechanically and electrically connected by means of the cross-sectionally omega-shaped contact clips 450 (FIG. 15) to the contact plates 444 of the contact tongues 440. As a result, according to FIGS. 1 6, 20 or 21, a negative connection box 27 b is created.

In the embodiment illustrated in FIGS. 17 and 22, one of the two contact tongues 440 makes contact between the positive contact 414 in the left region 410 and the positive contact 4221 in the right region 420 of the contact plate. The second contact tongue 440 establishes contact between the minus contacts 4242 and 4243 in the right region 420. This results in accordance with Figures 17 and 22, a positive junction box 27a.

The contact openings 413 in the left portion 410 of the contact diene serve to receive and attach contacts of a terminal connector 275 of the receiving and mechanically clamping and electrically conductive connection of the conduit device 82 is used.

In a configuration as intermediate junction box 27c according to FIG. 19, the two contact tongues 440 are brought into contact with the same contacts as in FIGS. 6, 20 or 21. In this case, the contact board 400 in the left region 410 is not provided with a clamping connector 275. In the right region 420 of the contact board 400, two positive contacts 4224 and 4225 are arranged in the positive region 422. In the surrounding minus area 424, four minus contacts 4244, 4245 and 42 46.4247 are arranged. These contacts are electrically conductively connected to a connector 274, which makes contact with the junction box 271 and the plug-in bypass device in the form of the diode plug 51.

As can be seen particularly clearly in the enlarged illustration according to FIG. 23, the middle pole 512 of the 3 poles 51 1, 512 and 513 of the diode plug 51 provided with a diode 515 is always set to plus so that the diode plug in each case is protected against reverse polarity the junction box 271 can be associated.

List of Reference Numerals, 210 Solar Module System

solar module

0, 120A, 120B, 120C solar module

0D, 120E, 120F solar module

2 outer pane

4 inner pane

6 insulating glass element (outside)

8 insulating glass element (inside)

9 Three-pane insulating glass element0 Spacer

2 sealants

4 disc space (at 126, 128) 6 laminate

8 distance (between 122, 124)

support plate

cover plate

a first solar cell string

b second solar cell string

n more solar cell strings

Solar cell string

Interconnects

contact tag

solar cells

, 226 Main junction box

a first main junction box

b second main junction box

Main junction box

a first (positive) main junction boxb second (negative) main junction boxc intermediate junction box

1 junction box 2 lids

3 base plate

4 connectors

5 clamp connectors

6 plugs

, 128, 228 junction boxes

a, 128a, 228a attachment section

b first junction box section

c second junction box section

Doses-pole connection

Pole connection section

, 134, 234 Can Connection Device

first contact piece

a, 236a, 238a pole contact section

b Bypass contact section

k first contact band

second contact piece

k second contact band

, 140, 240 can by-pass connection

, 142, 242 bypass connection section

, 244 Bypass connection device

Bypass device

Bypass device (diode plug)

bypass housing

connecting section

a lateral surface of the connection section

Bypass diode or diodeless bypass circuit contact device

, 166 Intermediate junction box

closure device

groove

web

locking device 76 attachment device

78 snap bar

78a resting section

78b base section

78c intermediate section

80 locking groove

82 line device

84 ring seal

86a first footbridge

86b second bridge

230a first can-pole connection

230b second socket pole connection

232a first pole connection section

232b second pole connection section

236k first contact band

238k second contact band

350 bypass blind device

352 Bypass housing

354 connection section

400 contact board

410 first area (from 400)

413 contacts (for XXX)

414 plus contact

415 minus contact

41 6 recess (for 20)

420 second area (from 400)

422 plus range (from 420)

4221 plus contact

4222 Plus contact

4224 plus contact

4225 plus contact

424 minus range (from 420)

426 recess (for 20) 4241 minus contact

4241 minus contact

4242 minus contact

4243 minus contact

4245 minus contact

430 isolation trench

440 contact tongue

441 first contact (at 440)

442 second contact (at 440)

444 contact plate (at 440)

450 contact clips

L32 pole connection longitudinal direction

L42, L142, L242 Bypass connection longitudinal direction

L54 Longitudinal direction of the connection section

L78 Longitudinal direction of the locking clip

d28, d128, d228 Through holes of the connection section

Claims

claims

Solar module system (10), comprising:

a solar module (12, 120, 120A, 120B, 120C, 120D, 120F) having at least a first and a second solar cell string (18a, 18b), each formed by a plurality of solar cells (22) connected in series, wherein the solar cell strings (18a, 18b) are electrically connected in series with each other, a first main junction box (26, 26a;) associated with the first solar cell string (18a) and a second main associated with the second solar cell string (18b) Junction box (26, 26b), the junction boxes (26, 26a, 26b; 27, 27a, 27b) each having:

a junction box housing (28; 271) having a plate-shaped mounting section (28a; 273) formed thereon for attaching the junction box housing (28; 271) to the solar module (12),

a can-pole terminal (30) for picking up a voltage generated by the solar cells (22), a pole terminal portion (32) of the junction box (28) for releasably connecting a line device (82) and electrically connected to the one the solar cell string (18a, 18b) connected and leading to the Polanschluss- section (32) leading Pol contact portion (36a),

a can by-pass port (40) for connecting a by-pass device (50; 51), said can-bypass port (40) having a bypass port portion (42) of said port canister (28) and one electrically connected to said respective solar cell string (18a, 18b) connected and to the bypass port portion (42) leading towards bypass connection device (44), the bypass devices (50), each comprising:

a bypass diode or diodeless bypass circuit (56) which is electrically connected to a contact device (58), a bypass housing (52) surrounding the bypass diode or diode-less bypass circuit (56) and the contact device (58) with a connection portion (54) having the contact device (58), which is detachably connected to the socket bypass connection (40), so that the bypass diode or diode-less bypass circuit (56) is electrically antiparallel to the respective solar cell string (18a, 18b) is switched.

Solar module system (10) according to claim 1, wherein

at least one further solar cell string (18n) between the first and the second solar cell string (18a, 18b) is electrically connected in series therewith,

a respective intermediate solar cell string (18n) is assigned in each case an intermediate junction box (66; 27c), each comprising: a junction box housing (28; 271) having a plate-shaped fastening section (28a;

273) for fixing the junction box (28;

271) on the solar module (12, 120, 120A, 120B, 120C, 120D,

120F)

a can-pole terminal (30) formed at least by a pole terminal portion (32) of the junction box (28);

a can by-pass port (40) for connecting a by-pass device (50; 51), the can-bypass port (40) having a bypass port portion (42) of the port can body (28; 271) and one electrically connected to the respective one of the solar cells -String (18a, 18b) and connected to the bypass terminal portion (42) leading bypass adapter (44), in each case the connection section (54) of a bypass housing (52) of a respective further bypass device (50; 51) is detachably plugged into the socket bypass connection (40) of the respective intermediate connection box (66; 27c), so that the bypass diode or diodeless bypass circuit (56) is electrically connected in anti-parallel to the respective solar cell string (18n).

Solar module system (10) according to claim 2, wherein the can-pole terminal (30) of the respective intermediate junction box (66; 27c) in each case a closure device (68) is plugged.

Solar module system (10) according to claim 1, wherein

a respective further solar cell string (18n) in each case an intermediate junction box (1 66; 27c) is assigned, each comprising:

a junction box housing (128; 271) having a plate-shaped mounting portion (128a; 271, 273) formed thereon for attaching the junction box housing (28; 271) to the solar module (12), a can by-pass port (140) for connection a bypass device (50, 51), wherein the can bypass connection (140) has a bypass connection section (142) of the junction box housing (128) and an electrical connection to the respective solar cell string (18n) and to the bypass connection. Section (142) leading bypass connection device (144), wherein in each case to the doses bypass connection (140) of the connecting portion (54) of a respective bypass housing (52) is detachably plugged, so that the bypass diode or diode bypass circuit (56 ) electrically connected in anti-parallel to the respective solar cell string (18n).

Solar module system (210) comprising:

a solar module (12) having a solar cell string (18) which is formed by a multiplicity of solar cells (22) connected in series,

a main junction box (226; 27, 27a, 27b, 27c) comprising: a junction box housing (228; 271) having a plate-shaped mounting section (228a; 271, 273) formed on the junction box housing (228; 271) ) for fixing the junction box (228; 271) to the solar module (12),

a first and a second can-pole terminal (230a, 230b) for picking up a voltage generated by the solar cells (22), the first and a second can-pole terminal (230a, 230b) each having a pole terminal portion (232a, 232b) of the A junction box housing (228; 271) for connecting a respective line device (82) and a pole contact section (236a, 238a) electrically connected to the solar cell string (18) and leading to the respective pole connection section (232a, 232b) .

a can by-pass port (240) for a by-pass device (50; 51) having a bypass port portion (242) of the port can body (228; 271) and electrically connected to the solar cell string (18) and to the Bypass terminal portion (242) leading bypass connection device (244),

the bypass device (50; 51) comprising:

a bypass diode or diodeless bypass circuit (56) electrically connected to a contact device (58), a Bypassgehäu- se (52) surrounding the bypass diode or diode-less bypass circuit (56) and the contact device (58) with a connecting portion (54) having the contact device (58), which releasably attached to the can by-pass port (240) is such that the bypass diode or diodeless bypass circuit (56) is electrically connected in anti-parallel to the solar cell string (18).

Solar module system (310) comprising:

a first and a second main junction box (26a, 26b; 27a,

27b), each comprising:

a junction box housing (28, 271) having a plate-shaped fastening section (28a, 271, 273) formed thereon for fastening the junction box (28, 271) to the solar module (12),

a can-pole terminal (30) for picking up a voltage generated by the solar cells (22), a pole terminal portion (32) of the junction box (28) for releasably connecting a line device (82) and electrically connected to the one comprising the solar cell strings (18a, 18b) and leading to the Polanschluss- section (32) leading Pol-contact portion (36a),

a can by-pass port (40) for connecting a by-pass device (50; 51), the can bypass port (40) passing through a bypass port portion (42) of the junction box (28; 271) and electrically connected to the one Solar cell string (18a, 18b) and connected to the bypass connection Section (42) leading bypass connection device (44),

the bypass device (50; 51) comprising:

a bypass diode or diodeless bypass circuit (56) which is electrically connected to a contact device (58), a bypass housing (52) surrounding the bypass diode or diode-less bypass circuit (56) and the contact device (58) with a contact portion (54) having the contact device (58), which is detachably connected to the socket bypass terminal (240), so that the bypass diode or diode-less bypass circuit (56) connected electrically anti-parallel to the solar cell string (18) is.

Solar module system (10) according to one of the preceding claims, wherein the solar module (12) has a carrier plate (14; 124; 128; 129) and a cover plate (16; 122; 126; 129) between which the solar cells (22) are arranged.

The solar module system (10) of claim 7, wherein the plate-shaped mounting portion (28a, 128a, 228a; 271; 273) of the junction box housing (28, 128, 228; 271) is disposed between the support plate (14; 124; 128; 129). and the cover plate (16; 122; 126; 129).

The solar module system (10) according to any one of the preceding claims, wherein the bypass port portion (42; 142; 242) as a recess of the junction box housing (28, 128, 228; 271), and the connection portion (54) of the bypass housing (52 ) is designed as a plug.

The solar panel system (10) according to any one of claims 1 to 8, wherein the bypass terminal portion (42; 142; 242) is formed as a plug formed on the junction box housing (28, 128, 228; 271) and the terminal portion (54) of the Bypass housing (52) is designed as a recess of the bypass housing (52). Solar module system (10) according to any one of the preceding claims, wherein at the connection portion (54) of the bypass housing (50) has a complementary to the bypass port portion (42, 142, 242) of the junction box (28, 128, 228) having executed cross-section.

Solar module system (10) according to claim 1 1, wherein the connecting portion (54) of the bypass housing (50) has a groove (70) extending in a longitudinal direction (L54) along a cross-section defining lateral surface (54a) of the connecting portion (54 ), and the bypass port portion (42, 142, 242) has a land (72) shaped complementarily to the groove, such that the bypass device (50) is releasably releasably secured to the receptacle housing (28, 128, 228) ) is attachable.

Solar module system (10) according to one of the preceding claims, wherein at least one of the housings (28, 128, 228; 271) of the main junction boxes (26, 26a, 26b; 27, 27a, 27b) or the intermediate junction boxes (66 , 1 66, 27c) has at least one locking device (74) for mechanically securing the bypass device (50) or an attachment device (76) in a state connected to the junction box housing (28, 128, 228; 271).

14. The solar module system (10) according to claim 1 3, wherein the locking device (74) is formed in one of the following alternative ways:

(a) a latching clip (78) is provided on the junction box housing (28, 128, 228; 271) of the main junction box (26, 226; 27, 27a, 27b) or the intermediate junction box (66, 1 66; 27c) ), wherein the bypass housing (52) has a latching groove (80) for receiving a latching portion (78a) of a latching clip (78), or

(b) the pole terminal portion (32, 232a, 232b) or the bypass terminal portion (42, 142, 242) of the junction box housing (28, 128, 228; 271) of the main junction box (26, 226; 27, 27a, 27b) or the intermediate junction box (66, 1 66, 27c) and the connecting portion (54) of the bypass housing (52) form an interference fit. 15. Solar module system (10) according to any one of the preceding claims, wherein at the connection portion (54) of the bypass housing (52) an annular seal (84) is arranged.

Solar module system (10) according to one of the preceding claims, characterized in that the solar cell strings (18a, 18b, 18n) in a laminate (136) between at least two adjacent panes (122, 124) or between insulating glass elements (126, 128, 129) are arranged so that protrude from the laminate (136) tabs (20) and these with a contact board (400) to the junction boxes (26, 226, 26a, 26b, 27, 27a, 27b, 27c) are electrically conductively connected.

The solar module system (10) according to claim 1 6, characterized in that the contact board (400) has at least one plus area (422) and at least one minus area (424), the plus area (422) and the minus area (424) each have two rows of alternately line positive contacts (4221, 4222, 4224, 4225) and negative contacts (4241, 4242, 4243, 4245).

18. Solar module system (10) according to claim 1, characterized in that the contact lugs (20) can be connected to contact tongues (440), the contact tongues (440) each having a first contact (441) and a second contact (44). 442) which are engageable in different ways with the contact board (400) in such a way that the connection boxes (26, 226, 26a, 26b; 27, 27a, 27b, 27c) are optionally in the form of a positive main connection box (27a), can be configured as a negative main junction box (27b) or as an intermediate junction box (27c). Solar module system (10) according to claim 18, characterized in that the contact lugs (20) by means of resilient contact clips (450) releasably connectable to the contact tongues (440),