DE202009007524U1 - Solar connection or transfer box with solder depot - Google Patents

Abstract

A junction box (6; 8) for a solar module (4) comprising:
A junction box fastening element (12, 18),
At least one connector (20) having a connection pole (50) or at least one cable (14) connected to the connection box (6; 8) with at least one line core (16),
- At least one terminal box contact device (36, 46) with
At least two conductor contacts (38a, 38b; 48a, 48b),
- At least one diode (40) which electrically connects two of the conductor contacts (38a, 38b; 48a, 48b) and
- At least one terminal contact (52) which is contacted with the terminal pole (50) or the at least one line core (16),
wherein at least one of the at least two conductor contacts (38a, 38b, 48a, 48b) has a solder depot (60a, 60b).

Description

The The present invention relates to a junction box, a jumper box and a solar panel.

conventional Include solar modules for generating electrical energy from sunlight one or more individual solar cells. Depending on the desired from the solar module available To put voltage and / or current, individual solar cells within of the module connected in parallel and / or in series and thus to solar cell groups summarized become. The solar cell groups can continue to be combined to form a flat solar module.

• (1) Eine (gleichmäßige) Verringerung der Bestrahlungsintensität innerhalb der zusammen geschalteten Solarzellengruppen führt zu einer Leistungsverminderung der jeweiligen Solarzellengruppe bzw. des jeweiligen Solarmoduls.
• (2) Durch eine partielle Abschattung einer Solarzelle innerhalb einer Solarzellengruppe wirkt diese abgeschattete Solarzelle als Sperrdiode bzw. Widerstand innerhalb des Stromkreises der Solarzellengruppe, was zum einen dazu führen kann, daß die gesamte Solarzellengruppe keine elektrische Energie mehr liefern kann und zum anderen zu einer Beschädigung der abgeschatteten Solarzelle und damit zum dauerhaften Ausfall der Solarzellengruppe führen kann.

The electrical connections of the solar cell groups of the solar module are led to the outside. In the case of partial reduction of the irradiation intensity by sunlight to individual solar cells or solar cell groups or to different solar modules, for example due to soiling or shadows, the following effects may occur, inter alia:

• (1) A (uniform) reduction of the irradiation intensity within the interconnected solar cell groups leads to a reduction in performance of the respective solar cell group or the respective solar module.
• (2) By a partial shading of a solar cell within a solar cell group, this shaded solar cell acts as a blocking diode or resistance within the circuit of the solar cell group, which may lead to the fact that the entire solar cell group can no longer provide electrical energy and on the other to damage the shaded solar cell and thus lead to permanent failure of the solar cell group.

In any case can between the led out connections the solar cell groups of a solar module, depending on the irradiation intensity on the individual Solar cells, different voltages applied. A series connection the solar cell groups by appropriate circuit of the outwardly led connections leads analogously to the above problems.

Around those with the different irradiation intensity of the solar cells To avoid associated problems, conventionally so-called bypass diodes are used, the electrically connected in anti-parallel to the solar cell groups become. These bypass diodes have the effect that the current flow through the solar module to solar cell groups, which is a low power deliver, passed by, d. H. the connections of this solar cell group of a solar module are short-circuited by the bypass diode and thereby bridging the corresponding solar cell group. Thus, such provides Solar cell group no longer contributes to the overall performance of Solar module, the total current flow through However, the solar panel is essentially unhindered and one damage individual solar cells is prevented.

solar panels Therefore, in addition to the solar module usually include an electrical junction box with a variety of contact devices and a corresponding matched Number of bypass diodes. Furthermore, the solar cells are in a solar module usually through flat thin Head bands connected with each other. These conductor strips are made from the solar module led out and manually with the arranged in the junction box contact devices contacted, so that on the one hand the generated power can be guided out of the solar module and on the other hand the solar cells are bridged if necessary can. The with the junction box provided solar module is referred to as a solar panel.

It The object of the invention is a junction box, a bridging box and provide a solar panel, which is a simple, material-saving Allow assembly.

The The object is solved by the independent claims. preferred Variants and / or embodiments are the subject of the dependent Claims.

Junction box according to one aspect

• – ein Anschlußdosenbefestigungselement,
• – zumindest einen Verbinder mit einem Anschlußpol oder zumindest ein mit der Anschlußdose verbundenes Kabel mit zumindest einer Leitungsader,
• – zumindest eine Anschlußdosenkontakteinrichtung mit
• – zumindest zwei Leiterkontakten,
• – zumindest einer Diode, welche zwei der Leiterkontakte elektrisch verbindet und
• – zumindest einem Anschlußkontakt, der mit dem Anschlußpol oder der zumindest einen Leitungsader kontaktiert ist,

wobei zumindest einer der zumindest zwei Leiterkontakte ein Lötmitteldepot aufweist.One aspect of the present invention relates to a junction box for a solar module, comprising:

• A junction box fastener,
• At least one connector having a terminal pole or at least one cable connected to the junction box having at least one line conductor,
• - At least one terminal box contact device with
• At least two conductor contacts,
• - At least one diode which electrically connects two of the conductor contacts and
• At least one terminal contact which is contacted with the terminal pole or the at least one line conductor,

wherein at least one of the at least two conductor contacts comprises a solder depot.

The solder deposit comprises a solder or is formed by a solder. The solder is preferably a metal alloy which may contain lead, tin, silver and / or copper, or more preferably an electrically conductive thermoplastic polymer. By the solder, a conductor contact with an associated electrical conductor is electrically and mechanically connectable by the solder in the molten state connects with these and then solidifies. The melting point of the solder is lower than the melting point of the conductor contact and is preferably less than 450 ° C, more preferably less than 300 ° C, and especially for electrically conductive polymers smaller than 250 ° C.

Further Preferably, the solder deposit next to the solder have a flux. A flux advantageously facilitates the melting process and handling of the molten solder. In particular, the flux deoxidizes in the heating of the Lötmitteldepot the surfaces the conductor contact and prevents the re-oxidation before and while of the soldering process by forming a liquid Protective layer.

advantageously, is an electrical conductor particularly easy with the associated Conductor contact connectable because the electrical conductor only by Arranging on the conductor contact and by applying heat to the solder or the solder deposit by means of a heat source can be contacted with the conductor contact. In particular, can heating of the solder deposit indirectly via a warming made of the electrical conductor or the conductor contact. Prefers is the heat source Soldering iron, so that the electrical conductor by means of the soldering iron with heat and a force acting against the associated conductor contact force acted upon is. Advantageously, the electrical conductor is particularly simple in particular automated, connectable to the conductor contact. Alternatively or additionally to the soldering iron may also be another or further heat source for heating the solder or of the solder deposit used, such as a heating tongs, a fan heater, a blowtorch and so on.

Of the Term "contact" in the sense The present invention includes in particular electrical and / or mechanical contact, so that a Junction boxes contactor is designed to have an electrical and / or mechanical contact with to produce the electrical conductors of the solar cell. The contact takes place by soldering by means of the solder deposit.

Of the Connector can be made in one piece be formed with the input and / or output terminal box. For example can the junction box in an injection molding process be made, wherein the connector made simultaneously with the junction box becomes. It is also possible, that the junction box and the connector made in separate process steps and the connector is then placed on the junction box is glued to it, for example. advantageously, is an electrical contact of the solar panel over the junction box using the or the electrical connector (s) particularly simple producible, with the junction box can be made compact. A connector is preferred only one pole each ready, d. H. a positive pole or a negative pole of the solar panel.

The junction box at least one cable with one or more conductor core (s) that contacts the terminal box contactor is / are. For example, the junction box in an injection molding process be prepared, wherein the sheath of the cable during manufacture the junction box with the junction box is connected. Advantageously, the electrical contact the solar panel by means of or the cable particularly reliable be prepared, in particular an increased moisture-proofness can be achieved in a simple manner. This can be a strain relief of the cable firmly with the junction box connected, in particular glued. Analogous to the previous one Description provides a cable preferably only one each A terminal ready, d. H. a positive pole or a negative pole of the solar panel, so that one Cable in particular has only one line wire.

Especially preferred for contacting or for connecting the solar panel, a connector and a cable to the junction box be provided. In particular, the cable can be at its distal to the junction box End a complementary one Have connector, which is designed with the connector of the junction box of a to be connected or contacted second solar panel.

The Conductor contacts of the junction box contact device are especially designed to contact with conductor strips. With In other words, the conductor contacts comprise, in particular, an im essentially planar area that is designed essentially form-fitting with an electrical conductor, in particular a conductor strip, too to contact.

Of the Term "im essential "can Within the meaning of the present invention, a deviation from a desired Describe property. In particular, this may mean a low level of d. H. without significant change the desired Property, for example, if the desired property as a source property can be viewed "in the essential "one Deviation from this property by less than about 20%, less than about 10%, less than about 5%, less than about 2%, in particular describe less than about 1%.

Preferred embodiments the junction box

Preferably is the solder deposit by means of an adhesive Connection attached to the conductor contact. In particular, that is Lötmitteldepot soldered to the conductor contact. Alternatively or in addition can the solder deposit also be clamped to the conductor contact, for example by Pressing in the solder deposit in a recess and / or by clamping the solder deposit between two holding areas of the conductor contact. Is preferred at least one of these holding portions designed to be flexible the solder depot set. More preferably, at least one of the holding areas resilient, so that the Holding area when attaching the solder deposit elastically deformed and applies a holding force to the solder deposit when the solder depot is mounted on the conductor contact.

• – genau einen Verbinder mit einem Anschlußpol oder genau ein mit der Anschlußdose verbundenes Kabel mit genau einer Leitungsader umfaßt und
• – genau eine Anschlußdosenkontakteinrichtung mit
• – genau zwei Leiterkontakten,
• – genau einem Anschlußkontakt, der mit dem einen Anschlußpol oder der einen Leitungsader kontaktiert ist, und
• – einer Diode, welche die zwei Leiterkontakte elektrisch verbindet,

umfaßt.Preferably, the junction box includes

• - Exactly one connector with a terminal pole or exactly one connected to the junction box cable with exactly one line wire includes and
• - exactly one terminal box contact device with
• - exactly two conductor contacts,
• - Just one terminal contact, which is contacted with the one terminal pole or a line core, and
• A diode electrically connecting the two conductor contacts,

includes.

ever after using the junction box corresponds to the junction box an input connection box or an outlet connection box. Every junction box thus provides exactly one pole of the solar panel ready, the current flow is defined such that the Output junction box the plus pole and the input connection box provide the negative pole, when the solar panel is in operational use.

Further Preferably, the output connection box has exactly one cable with exactly a line wire, with the trained as a line contact connection contact the junction box contact device the output connection box is contacted and the input terminal box has exactly one electrical Connector with exactly one terminal pole, which with the terminal contact the junction box contact device the input socket is contacted. It is understood that the input terminal box accordingly the above-described output terminal box and the output terminal box accordingly the input terminal box described above can be formed.

The The properties described below also apply to the Input connection box and / or outlet connection box trained junction box.

Preferably comprises the junction box attachment element a junction box base plate. Preferably, the junction box base plate integrally, in particular of a polymer or an electrically non-conductive Plastic, formed.

A Junction boxes baseplate is particularly preferably designed to be with a solar module be bondable. In particular, the side of the junction box base plate, which is designed to be attached to the solar module, essentially just trained. In particular, an adhesive may be applied to the junction box base be applied. The adhesive may, for example, a pressure-sensitive adhesive and / or a hot melt adhesive and / or an adhesive tape, etc. Further preferably comprises a junction box base plate at least one opening area. In particular, each conductor contact can be assigned an opening region.

Preferably has the junction box a junction box lid with a filling opening. Especially is the filling opening to it designed, an extrusion die for liquid synthetic resin to contact and / or record. For this purpose, the filling opening is particular conical educated.

Preferably are the at least two conductor contacts of the at least one terminal box contact device one piece formed, wherein the at least one terminal box contact means a predetermined breaking point has to dekontaktieren the two conductor contacts. Farther Preferably, the junction box contact device formed for example of a metal or a metal alloy be.

Preferably are the two conductor contacts of the at least one terminal box contact device mechanically connected to each other by means of the diode. Here are the two conductor contacts in particular so connected to the diode, that the Position of the two conductor contacts fixed to each other by the diode is. The connection between the diode and the respective conductor contact can by welding, Soldering, Gluing, clamping, crimping, etc. done.

Preferably, the terminal contact of the terminal box contactor is integrally formed with one of the conductor contacts. In particular, the conductor contact consists of a metal sheet or consist of the conductor contact and the terminal contact of the junction box contact means of a common piece of sheet metal.

Preferably is the diode of the junction box contact device an SMD diode. Advantageously, due to the flat design the SMD diode an improved mechanical contact between the Conductor contact and the diode formed. Further advantageously is the specific heat flow due the enlarged surface of the SMD diode across from a cylindrical coaxial diode reduced at the same power loss, so that the outgoing from the diode Thermal load of the surrounding components is reduced.

Junction box according to a aspect

• – ein Überbrückungsdosenbefestigungselement,
• – eine Überbrückungsdosenkontakteinrichtung mit
• – zwei Leiterkontakten und
• – zumindest einer Diode, welche die zwei Leiterkontakte elektrisch verbindet,

wobei zumindest einer der Leiterkontakte ein Lötmitteldepot aufweist.One aspect of the present invention relates to a jumper for a solar module, comprising:

• A bridging box attachment element,
• - A bridging can contact device with
• - two conductor contacts and
• At least one diode electrically connecting the two conductor contacts,

wherein at least one of the conductor contacts comprises a solder depot.

Further Preferably, the solder deposit next to the solder a flux exhibit. Other properties and advantages of the solder and the flux are in relation to the junction box described.

Preferred embodiments the bridging box

Preferably is the solder deposit by means of an adhesive Connection attached to the conductor contact. In particular, that is Lötmitteldepot soldered to the conductor contact. Alternatively or in addition can the solder deposit also be clamped to the conductor contact, for example by Pressing in the solder deposit in a recess and / or by clamping the solder deposit between two holding areas of the conductor contact. Preferred holding areas are with respect to the solder deposit the junction box already described.

Preferably comprises the jumper socket fastener one at the bypass can contactor directly arranged adhesive, wherein the bridging can contact means can be fastened by means of the adhesive to a solar module. Especially is the jumper box fastener an adhesive disposed directly on the bridging can contactor is.

For example the bridging box is ground plate free, d. h., That the bridging box no Base plate has. Thus, the bridging can contact device can be arranged on the solar module be, and the bypass can contact device from a bypass can lid be covered.

Preferably comprises the jumper socket fastener a bridging box base plate. For example, at the bridging box base plate arranged the adhesive. A bridging box base plate is particularly preferably adapted to be with the solar module be bondable.

Especially is the side of the jumper box base, which is designed to be attached to the solar module, essentially just trained. In particular, an adhesive may be on the bridging box base plate be applied. The adhesive may, for example, a pressure-sensitive adhesive and / or a hot melt adhesive and / or an adhesive tape, etc. Further preferably comprises a bridging box base plate at least one opening area. In particular, each conductor contact can be assigned an opening region.

Preferably the jumper box has a jumper can lid with a filling opening. In particular, the filling opening is designed to an extrusion nozzle for liquid synthetic resin to contact and / or record. For this purpose, the filling opening is particular conical educated.

Preferably are the two conductor contacts of the bypass can contactor one piece formed, wherein the bridging can contact device having a predetermined breaking point to dekontaktieren the two conductor contacts. Further preferably, the bridging can contact device formed for example of a metal or a metal alloy be.

Preferably are the two conductor contacts of the bypass can contactor mechanically connected to each other by means of the diode. Here are the two conductor contacts in particular so connected to the diode, that the Position of the two conductor contacts fixed to each other by the diode is. The connection between the diode and the respective conductor contact can by welding, Soldering, Gluing, crimping, etc. done.

Preferably, the diode of the bridging box is an SMD diode. This results the advantages shown in relation to the junction box also for the bridging box.

Solar panel according to one aspect

• – ein Solarmodul mit zumindest zwei elektrischen Leitern und
• – zumindest eine erfindungsgemäße elektrische Anschlußdose,

wobei zwei der elektrischen Leiter des Solarmoduls jeweils mit einem zugeordneten Leiterkontakt der Anschlußdosenkontakteinrichtung mittels des Lötmitteldepots verlötet sind.One aspect of the present invention relates to a solar panel comprising:

• A solar module with at least two electrical conductors and
• At least one electrical junction box according to the invention,

wherein two of the electrical conductors of the solar module are each soldered to an associated conductor contact of the junction box contact means by means of the solder deposit.

The Solar module includes at least one voltage-generating solar cell or solar cell group, which has two electrical conductors, the plus and minus poles form the solar cell. On a connection side, the at least two electrical Ladder, in particular in the form of thinner Head bands out of the solar module out become. The "connection side or area "in the sense The invention describes a side or surface, in particular a light-active side or surface across from lies. In other words, the photoactive side or surface is designed To record light or to lead into the solar module. The "connection side or surface" is in particular the backside of the solar module, by means of which the solar module, for example, attached or can be mounted.

Around the solar cell, as described above, from damage to protect, are the plus and minus pole of the solar cell, each with an associated Conductor contact of the junction box contact device contacted. By means of a bypass diode, which contains the two conductor contacts the junction box contact device contacted with each other, becomes a short circuit between the two poles generated when the over the voltage drop across the solar cell exceeds a predetermined threshold.

The at least one junction box is at the connection side or area attached to the solar module. The attachment of the junction box is done by means of the junction box fastening element, wherein the junction box fastener in particular may be designed to advantageously in easy to be glued to the solar module.

Preferred embodiments of the solar panel

Preferably are two electrical junction boxes spaced from each other attached to the solar module. Further preferred acts a first junction box as an input connection box and a second junction box as output connection box.

The Solar module includes preferably at least two series-connected voltage-generating Solar cells or solar cell groups, each solar cell two electrical conductor having the plus and minus pole of the solar cell form. Consequently included a solar module at least four electrical conductors. On the connection side, the at least four electrical conductors, in particular in the form of thin conductor strips from led out of the solar module. To protect every solar cell, are the plus and minus pole of each solar cell by means of a bypass diode connected with each other.

A Bypass diode is on the junction box contactor the input connection box or the input terminal box contact means of Input connection box arranged and indirectly connects the electrical conductors of a first solar cell, the electrical conductors with two different ones Conductor contacts the input terminal box contact device contacted are electrically connected only by the bypass diode are. Analogously, a second bypass diode is connected to the junction box contact device the output connection box or the output terminal can contact device arranged the output terminal box and indirectly connects the electrical conductors of a second solar cell, wherein the electrical conductors of the first solar cell from the electrical Ladders of the second solar cell are different. The solar cells are electrically connected to each other, the negative pole a solar cell connected to the positive pole of another solar cell can be.

The Input and output connection box are at the connection side or area the solar module spaced from each other, in particular by gluing.

Of the Term "spaced" in particular with respect to the spacing of the input and output terminal box in the sense of the invention that between the input socket and the output connection box a clear distance of preferably more than about 1 cm, more than about 5 cm, more than about 10 cm, more than about 50 cm and especially preferably more than about 1 m exists. The distance is through the Dimension of the solar module limited.

The one input terminal can contactor and the one output terminal can contactor are electrically connected to each other via the solar module, the input and output terminal can contactors being defined by the fact that the electric current from the Input terminal box contactor toward the output terminal box contactor flows when the solar panel is in operational use. In other words, the input terminal box and the output terminal box can form the two poles of the solar panel, ie, the output terminal box can be the positive terminal and the input terminal box can be the negative terminal, so that the current flows from the positive terminal to the negative terminal through a load connected to the solar panel. The terminology can also be reversed.

advantageously, the input and output junction boxes are easy to assemble and can independently be attached to each other anywhere on the solar module. This makes it possible advantageously the input terminal box z. B. at one to the output terminal box to arrange opposite end of the solar module. Become several such solar panels installed side by side in a solar system, can be an output outlet a first solar panel adjacent to an input terminal box of a second Be arranged solar panels. This allows the cable connections advantageously be minimized between the two solar panels, resulting in a material savings and ease of assembly the solar system results.

There exactly one diode is arranged in the input terminal box and exactly a diode is arranged in the output terminal box is achieved advantageously that the waste heat the diode efficiently routed out of the corresponding junction box can be. Thus, a damage the diode and / or junction box prevented due to excessive heat.

The Conductor contacts of the input terminal box are in operational use, d. h., if the input socket is arranged on the solar module, mechanically and electrically separated from each other Elements by means of the diode at least electrically, in particular also mechanically connected to each other.

Preferably comprises the solar panel at least one electrical bridging box according to the invention, wherein two of the electrical conductors of the solar module each with a associated conductor contact of the bridging can contact device are contacted, and wherein the at least one bridging box of the at least a junction box spaced attached to the solar module. Preferably, the at least one bridging box also from all junction boxes spaced apart.

The Solar module can also at least three, d. H. 3, 4, 5, 6, 7, 8, 9, 10, etc. connected in series voltage generating solar cells or Solar cell groups include, each solar cell two electrical Head has, which form the plus and minus pole of the solar cell and those on the connection side of the Solar module are led out of this. Consequently, a solar module includes at least six, d. H. 6, 8, 10, 12, 14, 16, 18, 20, etc. electrical Ladder, two of which are connected to the input socket and two with the output connection box are connected.

Around to protect the other solar cells by means of a bypass diode are the plus and minus pole of one the further, in particular each of the other, solar cells) with in each case one conductor contact of the bridging can contact device contacted. The bypass diode is on the bypass can contactor the bridging box arranged and indirectly connects their electrical conductors. consequently the number of diodes is equal to the number of doses, i. H. of the Sum of input connection box and output connection box and bridging box (s).

The Conductor contacts of the bridging can contact device are especially designed to contact with conductor strips. With In other words, the conductor contacts comprise, in particular, an im essentially planar area that is designed essentially form-fitting to contact with an electrical conductor, in particular a conductor strip. The bridging cans or the bypass can contact device points over the Ladder contacts no further contacts, in particular no further inputs and / or outputs or connecting poles, around the lock can contactor to electrically connect with an external device.

A or more bridging can (s) at the connection side of the solar module spaced from each other and from the input and output terminal box attached. In particular, the bridging box (s) is / are along the connecting line attached between the input and output connection box. The attachment takes place by means of the respective bridging box fastening element, which in particular can be designed to be with the solar module to be glued.

Preferably comprises the jumper socket fastener one at the bypass can contactor arranged adhesive, wherein the bridging can contact means is attached by means of the adhesive to the solar module.

In particular, the bridging Do senbefestigungselement comprise a layer of pressure-sensitive adhesive, hot melt adhesive and / or a double-sided adhesive tape. Advantageously, the bridging box is thereby material-saving and easy to attach to the solar module, since the bridging box is substantially free of ground plates, ie formed without a base plate or base plate. Due to the low mechanical load of the bridging box, which in particular does not include cable connections, so that no tensile load occurs, a simplified or weaker attachment of the bridging box does not preclude safe operation.

Preferably is the interior of at least one of the junction boxes and / or at least one the bridging cans moisture-proofing with synthetic resin.

The The junction box (n), in particular the input terminal box and / or the output terminal box, and / or the bridging boxes) is / are preferably poured with an insulating resin to the individual To connect components firmly together and electrically from each other to isolate. Advantageously, by pouring with Synthetic resin provides particularly good protection against the ingress of moisture, z. B. to achieve the standard IP67.

Farther The resin can also serve to the corresponding can on the To fix solar module, if z. B. the resin is a chemical Connection with the solar module is received. In this case, the synthetic resin serve as an adhesive. This is especially true for a jumper box when the jumper box is formed base plate free. In this case, the bypass can contactor be arranged on the solar module and the conductor contacts with the Ladders of the solar module can be contacted. Then you can the lock can lid are arranged and thus formed cavity with resin be poured out, whereby an intimate connection between the bridging can lid and the synthetic resin and the surface of the solar module can be produced, wherein the bridging can contact device embedded in the resin. Thus, the housing of the bridging box essentially from the bridging can lid, wherein one side of the jumper box is closed by the solar module.

Method for producing a solar panel

• – Bereitstellen eines Solarmoduls mit zumindest zwei elektrischen Leitern,
• – Bereitstellen zumindest einer erfindungsgemäßen elektrischen Anschlußdose,
• – Befestigen der Anschlußdose an dem Solarmodul, wobei zwei der elektrischen Leiter des Solarmoduls jeweils mit einem zugeordneten Leiterkontakt der Anschlußdosenkontakteinrichtung durch Erwärmung des Lötmitteldepots verlötet werden.

A preferred method of manufacturing a solar panel comprises the steps of:

• Providing a solar module with at least two electrical conductors,
• Providing at least one electrical junction box according to the invention,
• - Attaching the junction box to the solar module, wherein two of the electrical conductors of the solar module are each soldered to an associated conductor contact of the junction box contact by heating the solder deposits.

The Attach the junction box can be done in particular by means of an adhesive. The fastening For example, an application, in particular a spraying of a deformable, especially liquid Comprise adhesive on or on a contact surface of the junction box, with which the junction box comes into contact with the solar module. The glue can, for example completely cover the contact surface. It is also possible, that the glue applied only at discrete points or areas on or at the contact surface is.

Farther may include attaching the corresponding junction box to the solar module, that the Adhesive receives its adhesive or adhesive property. Of the Glue can z. B. with heat and / or be treated with light, such as. B. be irradiated with UV light.

The previous versions apply mutatis mutandis, if the adhesive is arranged on or on the contact surface of the solar module is. The adhesive may for example be a so-called two-component adhesive be arranged with a component on the junction box and a further component on the solar module. The fastening can thus include that Both components are brought into contact with each other. alternative or additionally The fastening may also include a protective sheet of one Adhesive or adhesive is removed.

The Solder one of the electrical conductors of the solar module with an associated Conductor contact of the junction box contact device is done by placing the electrical conductor on the conductor contact or at the solder deposit and warming of the solder deposit. Arranging and heating can at the same time or with a time delay, manually or automatically or mechanically respectively.

As a result of the heating, the solder deposit or the solder of the solder deposit is at least partially melted, so that the molten solder combines both with the electrical conductor and with the conductor contact and then solidifies by cooling. Preferably, the melting point of the solder is lower than the melting point of the conductor contact and the electrical conductor. The solder is preferably a soft solder having a melting temperature of less than 450 ° C, especially less than about 300 ° C. Alterna tively, the solder may comprise an electrically conductive thermoplastic polymer, wherein the melting temperature is preferably less than 250 ° C.

Prefers the electrical conductor is arranged on the conductor contact and subsequently by means of a heat source, z. B. by a soldering iron, pressed against the conductor contact and held by this until the indirect heating of the Solder deposits over the heated electrical conductor the solder is melted, so that the electrical conductor and the conductor contact are soldered. advantageously, the electrical conductor is particularly simple, in particular automated to solder with the conductor contact.

Preferred embodiments of the procedure

• – Bereitstellen eines Solarmoduls mit zumindest vier elektrischen Leitern,
• – Bereitstellen von zwei erfindungsgemäßen elektrischen Anschlußdosen, wobei eine erste Anschlußdose als Eingangsanschlußdose und eine zweite Anschlußdose als Ausgangsanschlußdose dient,
• – Befestigen der Eingangsanschlußdose mittels des Befestigungselements der Eingangsanschlußdose bzw. des Eingangsanschlußdosenbefestigungselements an dem Solarmodul,
• – Befestigen der Ausgangsanschlußdose mittels des Befestigungselements der Ausgangsanschlußdose bzw. des Ausgangsanschlußdosenbefestigungselements beabstandet von der Eingangsanschlußdose an dem Solarmodul,
• – Verlöten von zwei der elektrischen Leiter des Solarmoduls jeweils mit einem zugeordneten Leiterkontakt der Eingangsanschlußdosenkontakteinrichtung der Eingangsanschlußdose mittels des Lötmitteldepots der Eingangsanschlußdosenkontakteinrichtung,
• – Verlöten von zwei der elektrischen Leiter des Solarmoduls jeweils mit einem zugeordneten Leiterkontakt der Ausgangsanschlußdosenkontakteinrichtung der Ausgangsanschlußdose mittels des Lötmitteldepots der Ausgangsanschlußdosenkontakteinrichtung.

Preferably, the method comprises one or more of the following steps:

• Providing a solar module with at least four electrical conductors,
• Providing two electrical junction boxes according to the invention, wherein a first junction box serves as an input junction box and a second junction box as an outlet junction box,
• Fixing the input connection box by means of the fastening element of the input connection box or of the input connection box fastening element to the solar module,
• Fixing the output connection box by means of the fastening element of the output connection box or of the outlet connection box fastening element at a distance from the input connection box on the solar module,
• Soldering two of the electrical conductors of the solar module respectively to an associated conductor contact of the input terminal box contact means of the input terminal box by means of the solder deposit of the input terminal box contactor,
• - Soldering of two of the electrical conductors of the solar module in each case with an associated conductor contact of the output terminal box contact means of the output connection box by means of the solder deposit of the output terminal can contact device.

• – Bereitstellen zumindest einer erfindungsgemäßen elektrischen Überbrückungsdose,
• – Befestigen der Überbrückungsdose mittels des Überbrückungsdosenbefestigungselements an dem Solarmodul, wobei zwei der elektrischen Leiter des Solarmoduls jeweils mit einem zugeordneten Leiterkontakt der Überbrückungsdosenkontakteinrichtung durch Erwärmung des Lötmitteldepots verlötet werden und

wobei die zumindest eine Überbrückungsdose von der zumindest einen Anschlußdose beabstandet an dem Solarmodul befestigt wird.Preferably, the method further comprises the steps of:

• Providing at least one electrical bridging box according to the invention,
• - Fixing the bridging box by means of the bridging socket attachment element to the solar module, wherein two of the electrical conductors of the solar module are each soldered to an associated conductor contact of the bridging can contact device by heating the solder deposit and

wherein the at least one bridging box is at a distance from the at least one junction box attached to the solar module.

In the case, that this Solar panel has two or more junction boxes, for example an input connection box and an outlet connection box, becomes the bridging box from every junction box spaced attached to the solar module. Fastening the jumper box can also be done in particular by means of an adhesive, being the execute related to "fixing" with the junction box apply analogously.

• – Anordnen eines Anschlußdosendeckels an der Anschlußdose und/oder
• – Anordnen jeweils eines Überbrückungsdosendeckels an jeder Überbrückungsdose.

Preferably, the method comprises the further steps:

• - Arranging a junction box cover to the junction box and / or
• - Arrange one jumper cover at each jumper box.

Prefers comprises the above arrangement also a substantially fluid-tight, in particular waterproof and / or airtight, sealing.

Preferably comprises the method the further step of separating the junction box contact device and / or the at least one bridging can contact device at a predetermined breaking point.

Prefers are the two conductor contacts of the junction box contact device and / or the bypass can contact device in an original Condition together in one piece formed, wherein the junction box contact means a Has predetermined breaking point and / or the bridging can contact device has a predetermined breaking point / to the two conductor contacts to decode. Preferably, the two conductor contacts are present the decontacting soldered to the diode such that the position of the two conductor contacts to each other is fixed by the diode after decontacting. By separating at the predetermined breaking point, the decontacting takes place, both the electrical as well as the mechanical contact is interrupted.

The separation can be done by means of a tool before or after attaching the connection / bridging can contact device on the solar module. Preferably, the separation can take place by means of the connection / bridging can lid or a separating device arranged thereon with the arrangement of the lid. In particular, it is possible that an element of the lid when arranging the lid on the corresponding box separates the conductor contacts at the predetermined breaking point and / or is arranged at the position of the predetermined breaking point between the two conductor contacts to prevent subsequent contacting of the two conductor contacts.

Preferably comprises the method the further step of pouring the interior of the junction box and / or the at least one bridging box with synthetic resin through the opening the corresponding lid.

Prefers comprises pouring out the substantially fluid-tight, in particular waterproof and / or airtight, sealing or closing the interior of the junction box and / or the bridging box. The bypass diodes and the associated electrical conductors are thereby advantageously against environmental influences, in particular against moisture, protected. Further preferred pouring out also the attachment on the solar module.

Use according to one aspect

A junction box with the features described above can be arranged on a Solar module can be used as input or output connection box. there becomes the junction box on a connection side arranged the solar module. In particular, after the junction box with the Solar module to be electrically connected. Furthermore, the junction box can be used be to the solar module with other solar modules or electrical To connect consumers.

The The invention is not limited to the aspects or embodiments described above limited. Much more can individual features of the aspects and / or embodiments combined with each other arbitrarily In particular new embodiments will thus be formed.

figure description

following become preferred embodiments of the present invention with reference to the accompanying drawings by way of example explained. It shows:

1 a perspective view of a preferred embodiment of a solar panel in teilbestücktem state;

2 a plan view of a preferred embodiment of the solar panel;

3 FIG. 3 is an exploded perspective view of a preferred embodiment of an input terminal box; FIG.

4 Fig. 3 is an exploded perspective view of a preferred embodiment of an output terminal box;

5 : An exploded perspective view of a preferred embodiment of a bridging box; and

6 : A perspective view of a preferred embodiment of a bridging can contact device.

7A to 7F : Preferred Embodiments of a Conductor Contact with Solder Depot.

1 shows a perspective view of a preferred embodiment of a solar panel 2 in partially assembled condition. The shown solar panel 2 includes a solar module 4 , one as an input connection box 6 trained junction box and one as outlet connection box 8th trained junction box. The respective features of the two different junction boxes are accordingly distinguished from one another by the prefixing of the corresponding syllables "input" and "output".

The solar module 4 has ten electrical conductors 10a - 10j on, which are out on the connection side of the solar module out of this. Two of the electrical conductors 10a . 10b (in 1 not visible) are with the already attached input connection box 6 and two of the electrical conductors 10c . 10d (in 1 not visible) are with the already attached output connection box 8th contacted. Six more electrical conductors 10e - 10j protrude from the solar panel and are still to be contacted by bridging boxes (not shown).

The input connection box 6 is in this embodiment with its input terminal box base plate 12a as a preferred component of the input terminal box fastener 12 with the solar module 4 bonded. The input connection box 6 has a cable 14 with exactly one conductor 16 on, which with the input connection box 6 is firmly connected.

The outlet connection box 8th is in this embodiment with its output terminal box base plate 18a as a preferred component of the output terminal box fastener 18 with the solar module 4 bonded. The outlet connection box 8th has a connector 20 with exactly one connection pole. Furthermore, a fixing device (not shown) can be arranged, which serves to the cable 14 z. B. during installation of the solar panel 2 and / or during transport of the solar panel 2 to fix so that it prevents a loose end of the cable 14 the solar panel 2 and / or other objects damaged or persons injured.

2 shows a plan view of a preferred embodiment of the solar panel 2 , with three bridging boxes 22 , each with their bridging box base plate 24a as a preferred component of the bridging box attachment element 24 with the solar module 4 are glued. In the bypass doses 22 became the electrical conductors 10e - 10j (shown in 1 ) with the corresponding conductor contacts (shown in FIG 5 ) of bridging doses 22 contacted, in particular soldered.

2 shows that the input socket 6 by means of an input terminal box cover 26 , the outlet outlet 8th by means of an outlet outlet cover 28 and the bridging doses 22 each by means of a bridging can lid 30 are closed. The input outlet can lid 26 and / or the outlet outlet cover 28 and / or the lock can lids 30 can be glued to the solar module. Furthermore, the input terminal box cover 26 , the outlet outlet can lid 28 and the bypass can ends 30 one filling opening each 32 through, in a subsequent step, the interior of the input terminal box 6 or the outlet connection box 8th or bridging boxes 22 is poured with synthetic resin. Consequently, it is possible for the input terminal can lid 26 , the outlet outlet can lid 28 and the bypass can ends 30 by means of an adhesive, for. As an adhesive tape on the solar module 2 be fixed and then the respective interior is poured with the resin. The synthetic resin turns the input terminal can lid 26 , the outlet outlet can lid 28 and the bypass can ends 30 at the corresponding box and / or the solar module 2 fixed. It is also possible that the input terminal can lid 26 and / or the outlet outlet cover 28 and / or the lock can lids 30 be arranged with a tool on the corresponding box and held there until the inside of the box is filled with resin and the resin is cured so far that the input terminal can lid 26 and / or the outlet outlet cover 28 and / or the lock can lids 30 at the corresponding box and / or the solar module 2 is attached.

Further shows 2 in that the connector 20 the output connection box 8th through a complementary connector 34 is electrically connected to the input terminal box of another solar panel (not shown). By means of this electrical connection can several solar panels 2 over z. B. a series connection can be connected. Alternatively to the in 2 configuration shown may be the input terminal box 6 instead of the cable 14 also a connector 2 exhibit. Alternatively to the in 2 configuration shown may be the output connection box 8th instead of the connector 2 also a cable 14 exhibit.

3 shows an exploded perspective view of a preferred embodiment of the junction box as an input terminal box 6 , The shown electrical input connection box 6 includes the input terminal box fastener 12 with an input junction box base 12a and an adhesive 12b and an input terminal box contactor 36 with two conductor contacts 38a . 38b and a diode 40 , The conductor contacts 38a . 38b each have a bore, in or on each of which a solder depot 60a . 60b is fixed, for example, by clamping or soldering the solder in the respective hole. Two of the electrical conductors 10a . 10b of the solar module 4 are each with the associated conductor contact 38a . 38b the input terminal box contactor 36 contacted, in particular soldered, ie the electrical conductor 10a is with the conductor contact 38a contacted and the electrical conductor 10b is with the conductor contact 38b contacted.

The two conductor contacts 38a . 38b the input terminal box contactor 36 are integrally formed together, wherein the input terminal box contact means 36 a breaking point 42 has to the two conductor contacts 38a . 38b before or during closing of the input terminal box cover 26 to decode. After separating the predetermined breaking point 42 and before pouring the inside of the input terminal box 6 are the two conductor contacts 38a . 38b only by means of the diode 40 mechanically interconnected. It is possible that the conductor contacts 38a . 38b at the entrance junction box 6 are fixed. For example, the conductor contacts 38a . 38b at the entrance junction box 6 glued and / or riveted and / or welded and / or held by a mechanical locking device.

The input connection box 6 in 3 has a cable 14 with a conductor 16 on, which formed with a line contact as a contact terminal 52 the input terminal box contactor 36 is contacted. Furthermore, the cable points 14 a strain relief, the area in a trained receiving device of the input terminal box 6 arranged and fixed there. In particular, the strain relief with the receiving device of the input terminal box 6 be glued so that the inside of the input terminal box 6 at the receiving device against the environment is moisture-proof completed.

4 shows an exploded perspective view of a preferred embodiment of the junction box as an output terminal box 8th , The electrical output connection box shown 8th includes an output terminal box fastener 18 with an outlet outlet base plate 18a and an adhesive 18b and an output terminal can contactor 46 with two conductor contacts 48a . 48b and a diode 40 , The conductor contacts 48a . 48b each have a bore, in or on each of which a solder depot 60a . 60b is fixed, for example, by clamping or soldering the solder in the respective hole. Two of the electrical conductors 10c . 10d of the solar module 4 are each with the associated conductor contact 48a . 48b the output terminal can contact device 46 contacted, in particular soldered, ie the electrical conductor 10c is with the conductor contact 48a contacted and the electrical conductor 10d is with the conductor contact 48b contacted.

The two conductor contacts 48a . 48b the output terminal can contact device 46 are integrally formed together, wherein the output terminal can contact device 46 a breaking point 42 has to the two conductor contacts 48a . 48b before or during the closing of the outlet outlet cover 28 to decode. After separating the predetermined breaking point 42 and before pouring the interior of the outlet connection box 8th are the two conductor contacts 48a . 48b only by means of the diode 40 mechanically interconnected.

The outlet connection box 8th in 4 has a connector 20 with a connection pole 50 on that with a connection contact 52 the output terminal can contact device 46 is contacted. Preferably, the terminal contact 52 the output terminal can contact device 46 and the terminal contact formed as a line contact 52 the input terminal box contactor 36 formed substantially identical.

It is understood, however, that in the 3 shown input socket 6 also as output connection box 8th can serve and vice versa, since the function is determined as input or output only by the Stromflußrichtung. The input connection box 6 and the outlet connection box 8th can therefore be referred to as junction boxes, if they are not in a solar panel 2 are installed. Furthermore, the apply to 3 made statements in an analogous way for 4 ,

5 shows an exploded perspective view of a preferred embodiment of the bridging box 22 , The electrical jumper box shown 22 includes a bridging socket fastener 24 with a bridging box base plate 24a and an adhesive 24b , Furthermore, the bridging box includes 22 a bridging can contact device 54 with two conductor contacts 56a . 56b and a diode 40 , The conductor contacts 56a . 56b each have a bore, in or on each of which a solder depot 60a . 60b is fixed, for example by clamping or soldering the solder in the respective bore, so that the solder depot is partially visible in this view. Two of the electrical conductors 10e . 10f (Conductor bands) of the solar module 4 are each with the associated conductor contact 56a . 56b the bypass can contact device 54 contacted, in particular soldered, ie the electrical conductor 10e is with the conductor contact 56a contacted and the electrical conductor 10f is with the conductor contact 56b contacted.

The two conductor contacts 56a . 56b the bypass can contact device 54 are integrally formed together, wherein the bridging can contact device 54 a breaking point 42 has to the two conductor contacts 56a . 56b before or during the closing of the lock can lid 30 to decode. After separating the predetermined breaking point 42 and before pouring the interior of the bridging box 22 are the two conductor contacts 56a . 56b only by means of the SMD diode 40 mechanically interconnected.

6 shows a perspective view of the preferred embodiment of the bypass can contact device 54 the bridging box 22 according to 5 with the two conductor contacts 56a . 56b , the SMD diode 40 , the two solder deposits 60a . 60b and the breaking point 42 , Through the breaking point 42 are the two conductor contacts 56a . 56b still mechanically and electrically connected to each other. For operational use, the bypass can contactor 54 at the breaking point 42 separated into two parts, so that the electrical connection of the two parts only via the diode 40 and optionally one to the conductor contacts 56a . 56b connected solar cell takes place.

Next, the lock box contact means 54 in a floor area mounting holes 58 by means of which the bridging can contact device 54 on the solar module 4 can be fastened when the floor area on the solar panel 4 is arranged. In particular, on the solar module 4 and / or to the lock can contactor 54 an adhesive, e.g. As an adhesive, a thermoplastic, etc. are applied, so that the adhesive through the mounting holes 58 penetrates and the bypass can contactor 54 engages when the Bridging doses contactor 54 is arranged on the solar module for fastening. Alternatively or additionally, the adhesive could also be applied to the solar module 4 facing side of the bypass can contact device 54 be arranged without through the mounting holes 58 to penetrate. Likewise, the mounting holes 58 Serve, bypass can contact device 54 on the solar module 4 and / or at the lock box base plate 24a by riveting, welding, gluing, etc. to attach.

Otherwise, the bridging can contact device 54 substantially identical to the terminal box contactor or input terminal box contactor 36 or the output terminal can contact device 46 be educated.

Alternatively to the in 5 shown embodiment of the bridging box 22 In a further embodiment, the bridging box 22 from the bypass can contact device 54 and from the jumper can lid 30 and optionally a fastener for securing the lock-up can contactor 54 at the lock can lid 30 (or vice versa) and / or on the solar module 4 consist. Consequently, the lock-up box will 22 only assembled when the bridging can contact device 54 and the bypass can lid 30 on the solar module 4 are arranged. In this embodiment, the bridging box 22 further one or more adhesives, such as. As an adhesive, an adhesive tape, etc., and / or one or more fastening means, in particular screws, rivets, snaps, undercuts, hooks, eyes, etc. for attaching the bridging can lid 30 on the solar module 4 and / or securing the jumper can lid 30 at the bypass can contact device 54 and / or for attaching the lock-up can contactor 54 on the solar module 4 include.

The 7A to 7F show exemplary preferred embodiments of a conductor contact 56a with solder depot 60a , It is understood that these exemplary preferred embodiments of the conductor contact 56a both in a bridging box 22 as well as in one of the above-described junction boxes 6 . 8th can be used. Thus, the conductor contacts shown 56a also with the reference numerals 38a or 48a be designated.

That in the 7A and 7B shown solder depot 60a is by means of an adhesive connection to the conductor contact 56a attached, in particular soldered to this. Like in the 7A shown, can be an electrical conductor 10e by pressing on the solder depot 60a and heating with the conductor contact 56a be soldered. In contrast to 7A is the solder deposit 60a in the 7B on a side of the conductor contact facing the bottom region of the bridging can contact device 56a arranged so that the electrical conductor 10e must be bent to the solder deposit 60a to be arranged and soldered.

That in the 7C and 7D shown solder depot 60a is by means of a continuous bore 62 at the conductor contact 56a attached. Like in the 7C The solder, similar to a rivet, can be shown on either side of the hole 62 with the conductor contact 56a engage. Advantageously, an electrical conductor 10e from both sides of the ladder contact 56a be soldered with this. In contrast to 7C is the solder deposit 60a so in the hole 62 pressed or filled that the solder depot 60a only on one side of the conductor contact 56a out of the hole 62 protrudes, so that advantageously less solder to form the solder depot 60a is needed.

As in the 7E and 7F shown, the solder deposit 60a alternatively or in addition to an adhesive attachment also on the conductor contact 56a be clamped, for example, by pinching the solder deposits 60a between two holding areas 64a . 64b of the conductor contact 56a , At least one of these holding regions is preferred 64a made flexible to the solder depot 60a set. More preferably, at least one of the holding areas 64a formed resilient, so that the holding area 64a when attaching the solder deposit 60a is deformed elastically in the solid state and a holding force on the solder depot 60a exercises when the solder deposit 60a at the conductor contact 56a is fixed.

2

solar panel

4

solar module

6

Input connection box

8th

Output junction box

10a-10j

electrical ladder

12

Input terminal cans fastener

12a

Input terminal cans baseplate

12b

adhesives

14

electric wire

16

cable core

18

Output terminal cans fastener

18a

Output terminal cans baseplate

18b

adhesives

20

Interconnects

22

bridging can

24

Bridging doses fastener

24a

Bridging doses baseplate

24b

adhesives

26

Input terminal can lid

28

Output terminal can lid

30

Bridging can lid

32

fill opening

34

complementary connector

36

Input terminal cans contactor

38a, 38b

conductor contact

40

diode

42

Breaking point

46

Output terminal cans contactor

48a, 48b

conductor contact

50

A terminal

52

connection contact

54

Bridging doses contactor

56a, 56b

conductor contact

58

fastening opening

60a, 60b

Lötmitteldepot

62

drilling

64a, 64b

holding area

Claims (22)

Junction box ( 6 ; 8th ) for a solar module ( 4 ), comprising: - a junction box fastening element ( 12 . 18 ), - at least one connector ( 20 ) with a connection pole ( 50 ) or at least one with the junction box ( 6 ; 8th ) connected cable ( 14 ) with at least one conductor ( 16 ), - at least one junction box contact device ( 36 ; 46 ) with - at least two conductor contacts ( 38a . 38b ; 48a . 48b ), - at least one diode ( 40 ), which two of the conductor contacts ( 38a . 38b ; 48a . 48b ) electrically connects and - at least one terminal contact ( 52 ) connected to the terminal pole ( 50 ) or the at least one conductor ( 16 ), wherein at least one of the at least two conductor contacts ( 38a . 38b ; 48a . 48b ) a solder deposit ( 60a . 60b ) having. Junction box ( 6 ; 8th ), according to claim 1, wherein the solder deposit ( 60a . 60b ) by means of an adhesive connection to the conductor contact ( 38a . 38b ; 48a . 48b ) is attached. Junction box ( 6 ; 8th ) according to claim 1 or 2, wherein the junction box ( 6 ; 8th ) - exactly one connector ( 20 ) with a connection pole ( 50 ) or exactly one with the junction box ( 6 ; 8th ) connected cable ( 14 ) with exactly one conductor ( 16 ) and - exactly one terminal box contact device ( 36 ; 46 ) with - exactly two conductor contacts ( 38a . 38b ; 48a . 48b ), - exactly one connection contact ( 52 ) connected to one terminal pole ( 50 ) or the one conductor ( 16 ), and - a diode ( 40 ) containing the two conductor contacts ( 38a . 38b ; 48a . 48b ) electrically connects. Junction box ( 6 ; 8th ) according to one of the preceding claims, wherein the junction box fastening element ( 12 ; 18 ) a junction box base plate ( 12a ; 18a ). Junction box ( 6 ; 8th ) according to one of the preceding claims, wherein the junction box ( 6 ; 8th ) a junction box lid ( 26 ; 28 ) with a filling opening ( 32 ) having. Junction box ( 6 ; 8th ) according to one of the preceding claims, wherein the at least two conductor contacts ( 38a . 38b ; 48a . 48b ) of the at least one terminal box contact device ( 36 ; 46 ) are integrally formed and wherein the at least one terminal box contact device ( 36 ; 46 ) a predetermined breaking point ( 42 ) to connect the two conductor contacts ( 38a . 38b ; 48a . 48b ) to decontact. Junction box ( 6 ; 8th ) according to one of the preceding claims, wherein two conductor contacts ( 38a . 38b ; 48a . 48b ) of the at least one terminal box contact device ( 36 ; 46 ) by means of the diode ( 40 ) are mechanically interconnected. Junction box ( 6 ; 8th ) according to one of the preceding claims, wherein the terminal contact ( 52 ) of the junction box contact device ( 36 ; 46 ) with one of the conductor contacts ( 38a . 38b ; 48a . 48b ) is integrally formed. Junction box ( 6 ; 8th ) according to one of the preceding claims, wherein the diode ( 40 ) is an SMD diode. Bridging box ( 22 ) for a solar module ( 4 ), comprising: - a bridging socket attachment element ( 24 ), - a bridging can contact device ( 54 ) with - two conductor contacts ( 56a . 56b ) and - at least one diode ( 40 ) containing the two conductor contacts ( 56a . 56b ), wherein at least one of the conductor contacts ( 56a . 56b ) a solder deposit ( 60a . 60b ) having. Bridging box ( 22 ), according to claim 10, wherein the solder deposit ( 60a . 60b ) by means of an adhesive connection to the conductor contact ( 56a . 56b ) is attached. Bridging box ( 22 ) according to claim 10 or 11, wherein the bridging box fastening element ( 24 ) on the bypass can contactor ( 54 ) directly arranged adhesive and wherein the bridging can contact means ( 54 ) by means of the adhesive to a solar module ( 4 ) is attachable. Bridging box ( 22 ) according to one of claims 10 to 12, wherein the bridging socket fastening element ( 24 ) a bridging box base plate ( 24a ). Bridging box ( 22 ) according to one of claims 10 to 13, wherein the bridging box ( 22 ) a bridging can lid ( 30 ) with a filling opening ( 32 ) having. Bridging box ( 22 ) according to one of claims 10 to 14, wherein the two conductor contacts ( 56a . 56b ) of the bypass can contact device ( 54 ) are integrally formed and wherein the bridging can contact means ( 54 ) a predetermined breaking point ( 42 ) to connect the two conductor contacts ( 56a . 56b ) to decontact. Bridging box ( 22 ) according to one of claims 10 to 15, wherein the two conductor contacts ( 56a . 56b ) of the bypass can contact device ( 54 ) by means of the diode ( 40 ) are mechanically interconnected. Bridging box ( 22 ) according to one of claims 10 to 16, wherein the diode ( 40 ) is an SMD diode. Solar panel ( 2 ), comprising: - a solar module ( 4 ) with at least two electrical conductors ( 10a . 10b ), - at least one electrical junction box ( 6 ; 8th ) according to at least one of claims 1 to 9, wherein two of the electrical conductors ( 10a . 10b ) of the solar module ( 4 ) each with an associated conductor contact ( 38a . 38b ; 48a . 48b ) of the junction box contact device ( 36 ; 46 ) by means of the solder deposit ( 60a . 60b ) are soldered. Solar panel ( 2 ) according to claim 18, wherein two electrical junction boxes ( 6 ; 8th ) spaced from each other on the solar module ( 4 ) are attached. Solar panel ( 2 ) according to one of claims 18 or 19, with at least one electrical bridging box ( 22 ) according to at least one of claims 10 to 17, wherein two of the electrical conductors ( 10e . 10f ) of the solar module ( 4 ) each with an associated conductor contact ( 56a . 56b ) of the bypass can contact device ( 54 ), and wherein the at least one bridging box ( 22 ) of the at least one junction box ( 6 ; 8th ) spaced at the solar module ( 4 ) is attached. Solar panel ( 2 ) according to claim 20, wherein the bridging box attachment element ( 24 ) on the bypass can contactor ( 54 ) and wherein the bridging can contact means (14) comprises 54 ) by means of the adhesive on the solar module ( 4 ) is attached. Solar panel ( 2 ) according to one of claims 18 to 21, wherein the interior of at least one of the junction boxes ( 6 ; 8th ) and / or at least one of the bridging doses ( 22 ) is moisture-sealed with synthetic resin.