Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/02—Contact members
  • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
  • H01R12/50—Fixed connections
  • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
  • H01R12/61—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to flexible printed circuits, flat or ribbon cables or like structures
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/02—Soldered or welded connections
  • H01R4/021—Soldered or welded connections between two or more cables or wires
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
  • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections

Definitions

• the invention relates to an electrical connection element comprising an electrical conductor and an electrically conductive coating.
• fasteners which are formed as a flat wire and having a coating of a solder.
• connection element is used to connect a plurality of electrical components, e.g. Solar cells to electrically connect with each other.
• the connecting element is heated and soldered while melting the coating with the electrical component.
• coated fasteners which are formed as stamped parts or as cut strips.
• the known connecting elements have the disadvantage that considerable amounts of energy are necessary in order to heat the coating fast enough. Otherwise, the coating may not heat up quickly enough so that a secure connection between the electrical conductor and the electrical component is not achieved. It is therefore an object of the present invention to provide a connecting element of the type mentioned, which is easy to process and the coating can be heated quickly, so that a secure connection between the electrical conductor and electrical component can be achieved at the same time higher processing speeds.
• This object is achieved in that the surface of the coating is at least partially formed with a structuring and / or rough surface. This results in the advantage that an effective surface area of the coating, which is larger than an unprocessed surface, is available and therefore has a high light and / or heat absorption.
• the coating is preferably constructed of a homogeneous material, in which the structuring and / or rough surface is incorporated by a surface treatment. Homogeneity ensures that the entire layer heats up evenly and is thus available for the subsequent bonding process.
• the electrically conductive coating contains a solderable material, for example a solder, in particular tin.
• the coating itself can ensure the production of a firmly adhering solder joint in one work step.
• the electrically conductive coating may contain an adhesive, preferably a conductive adhesive. This allows the coating
• the electrical conductor consists of a metal, in particular copper, or a metal alloy, in particular a copper alloy.
• Knurling or ribbing exist.
• Such a surface modification is, for example, particularly simple and automated to produce by rolling.
• the structuring and / or rough surface can be produced by etching.
• etching By this chemical treatment, a uniform surface modification can also be achieved.
• Coating extends. This eliminates the need to work the entire surface of the coating. So only that surface area must be changed, which later on the application of the connecting element to the electrical component for
• Heating is irradiated, for example, with infrared light.
• Cross section extend over the entire circumference of the electrical conductor.
• the connecting element is particularly simple and inexpensive to manufacture.
• the electrical conductor may have a large longitudinal extent in comparison to the cross section and may be formed, for example, as a wire. This is It makes possible in one step many electrical components over a
• Li advantageously, a corrugation or knurling substantially parallel to
• the electrical conductor may be circular in cross section. This allows the use of commercially available wires.
• the electrical conductor in cross section with a deviating from the circular shape, for example rectangular, in particular as
• Length of the connecting element may be formed with a structuring and / or rough surface.
• a particularly high heat input and a particularly simple production and processing is possible.
• the structuring and / or rough surface can be applied in a continuous process, while in the processing the same properties of the product can be safely applied at any time
• Length of the connecting element extends. It is advantageous that during processing does not have to pay attention to where the coating is located and also results in a surface protection for the electrical conductor.
• the connecting element according to the invention can be applied to a solar cell. In this use, a secure production of a connection between solar cell and electrical conductor is particularly important and therefore the inventive application of a structuring and / or rough surface on the coating of particular advantage.
• two or a multiplicity of solar cells can be connected to one another via connecting elements according to the invention.
• the connecting elements so several solar cells can be interconnected to a larger unit, for example, to a solar module.
• the module can, to be weather-resistant, be encapsulated.
• an electrical conductor may be used which has a large longitudinal extent in comparison to the cross section and is designed, for example, as a wire, preferably as a flat wire.
• the electrical conductor can be advantageously applied along its longitudinal extent to the electrical component. It is possible to connect many electrical components via a connecting element in one processing step.
• FIG. 1 shows a first embodiment of a connecting element with an electrical conductor of a substantially circular cross-section
• 2 shows a second embodiment of a connecting element with a flat electrical conductor
• FIG. 3 shows a third embodiment of a connecting element with a flat electrical conductor
• FIG. 4 shows a fourth embodiment of a connecting element with a flat electrical conductor
• Fig. 6 shows a further embodiment, in which the surface of the coating and the
• Fig. 8 is a solar module consisting of a plurality of each other by means of electrical
• Fig. 9 shows a detail A of the solar module shown in Figure 8 with two by means of electrical
• the electrical connection element 1 consists of an electrical conductor 2, which is designed as a core.
• the electrical conductor 2 is provided all around with a coating 3, which may for example contain a solderable material. Alternatively, however, the coating 3 may also contain an adhesive.
• the coating 3 has a textured or rough surface 5, e.g. can be achieved by rolling, grinding, etching or the like. The effective surface coating is therefore greater than that of such without this processing step.
• the electrical connection element 1 consists of an electrical conductor 2, which is designed as a flat wire. It has a deviating from the circular shape, substantially rectangular cross-section.
• the side of the electrical conductor 2 shown in Figures 2a and 2b above is provided with a coating which is also electrically conductive.
• the side shown in FIGS. 2a and 2b above, ie the outside of the coating 3, has a structured or rough surface 5.
• the side of the electrical conductor 2 shown in FIGS. 2a and 2b below may also have a coating.
• the electrical connection element 1 is made of an electrical conductor 2, which, like the exemplary embodiment according to FIG.
• the coating 3 shown in FIG. 3 has a structuring and / or rough surface 5 on the upper and lower sides of the electrical connection element 1. Since the coating 3 is applied in cross-section over the entire circumference of the electrical conductor 2, a universal applicability of the electrical connection element is achieved. During processing, therefore, it is no longer necessary to pay attention to the correct position of the electrical connection element 1. In addition, the electrical connection element is protected against harmful environmental influences and corrosion.
• the coating does not have to be equally strong everywhere. Rather, on one side, for example, more coating material may be applied. On the opposite side, for example, the layer thickness is reduced. In a particularly advantageous manner, the layer thickness on the side intended for contacting is greater than on the opposite side, where the coating has mainly a protective function.
• the electrical connection element 1 consists of an electrical conductor 2, which is similar to the embodiments of Figure 2 and 3 designed as a flat wire.
• the surface of the coating 3 is modified only on the side of the electrical conductor 2 intended for energy absorption.
• the structuring and / or rough surface 5 therefore extends in cross-section only over a region of the circumference of the coating.
• a coating 3 is applied in cross-section over the entire circumference, so that the electrical conductor 2 is completely surrounded by the coating 3.
• the coating need not be equally strong everywhere. Rather, on one side, for example, more coating material may be applied.
• the layer thickness on the side intended for contacting is greater than on the opposite side, where the coating has mainly a protective function.
• the use of an electrical connection element according to the invention is described below with reference to FIG.
• the electrical connection element in FIG. 5 has an electrical conductor 2, which is designed as a flat wire. It is so applied to an electrical component 4, for example a solar cell, that the Coating comes to lie with the structuring and / or rough surface 5 having side in the direction of an energy input device.
• any type of device which is suitable for sufficiently heating the coating material to produce a secure connection is considered as the energy introduction device.
• an example of a hifrarot device is given.
• the electrical conductor 2 is designed as a flat wire and which has a coating all around. Since the coating on both sides of the connecting element 1 has a structuring and / or rough surface 5, the connecting element 1 can be applied twisted both in the position shown and by 180 °.
• the coating 3 is made of a solderable material, for example, it is heated under infrared light and allowed to melt. In doing so, it connects to the electrical component 4 and, after cooling, ensures a connection between the electrical conductor 2 and the electrical component 4.
• the surface 5 of the coating 3 can have any type of structuring, for example grooves in the longitudinal and / or transverse direction, grooves in the longitudinal and / or transverse direction, sanding marks in the longitudinal and / or transverse direction, or the like.
• the rough surface 5 may have one or more preferred directions or be formed the same in all directions.
• the structuring and / or rough surface 5 can be carried out mechanically and / or chemically, for example by etching.
• the coating 3 itself may constitute a means for connecting the electrical conductor 2 and the electrical component 4. It is then in the application of the electrical connection means 1 no further connection means such as solder or adhesive necessary.
• the coating 3 may be made of a solderable material.
• the larger surface 5 of the coating 3 allows a faster heating for the formation of a solder joint between the electrical conductor 2 and the electrical component 4.
• Such a soldering can be automated.
• the soldering can be carried out by means of infrared light. Since the coating consists of a solderable material, in particular a solder, eg tin, the soldering can be done without additional material. In this case, the solder necessary for a solder joint is the coating material itself. If, as an alternative, the conductive coating 3 contains an adhesive, it can act as a means for connecting the electrical conductor 2 and the electrical component 4.
• the enlarged surface 5 of the coating improves Energy input into the coating 3 and thus a faster and secure production of an adhesive bond between the electrical conductor 2 and electrical component 4 achieved.
• the surface 6 of the electrical conductor 2 can also be modified.
• the electrical conductor 2 can thus also be formed with a structured and / or rough surface 6. This results in the advantage that an enlarged contact surface between the electrical conductor and the coating material is available and therefore the achievable adhesive force is increased. At the same time, the layer thickness of the coating can be reduced to achieve a given adhesive force.
• the coating usually has a convex surface.
• this surface is flat and flat owing to the processing of the surface of the coating.
• the electrical connection element according to the invention can be completely flat and flat on its surface, at least in regions. This in turn has the advantage that when applied to an electrical component, such as a solar cell, it rests flat and so a secure connection can be produced.
• such a connecting element for example a flat wire, which also has a substantially flat, flat surface on its coating
• the usual vacuum grippers can take such flat objects faster and safer.
• a wire with a flat, flat surface can also be wound up in a space-saving, faster and with higher process reliability on a spool.
• the wire, especially if it is a flat wire can therefore easily wrap in layers on a spool and also unwind easily from this. Also, the straightness guaranteed, which could be affected by an irregular winding. This represents a significant advantage in terms of automation possibilities and thus on the manufacturing costs in the processing process.
• the electrical connection elements 1 according to the invention can be used in a particularly advantageous manner as a connector for a solar cell 4.
• two connecting elements 1 for example, designed as a flat wire and applied to a surface of the solar cell 4 in each case.
• other described connecting elements according to the invention can also be used.
• connecting elements with an electrical conductor also structured or rough surface as a connector for a solar cell results in a high deduction or Abrisskraft of the connecting element of the solar cell. It is also possible to reduce the coating thickness for a given withdrawal or removal force.
• Several solar cells 4 can be interconnected by means of the connecting elements 1 in any desired manner to a solar module 7.
• connecting elements 1 designed as flat wire the appearance shown in FIG. 8 results with continuous connecting bands.
• other described connecting elements according to the invention can also be used, wherein, for example, in a connection via stamped parts or cut strips, no continuous connecting bands are visible.
• FIG. 9 shows a possibility of connecting two adjacent solar cells 4 of a solar module 7.
• the upper side of a solar cell 4 is connected to the underside of an adjacent solar cell 4 via connecting elements 1 according to the invention.
• Further embodiments according to the invention have only a part of the features described, wherein each feature combination, in particular also of various described embodiments, can be provided.

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• Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
• Photovoltaic Devices (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36888748

Family Applications (1)

Country Status (6)

Cited By (6)

Families Citing this family (5)

Citations (4)

Family Cites Families (7)

• 2005
  • 2005-06-01 AT AT0093905A patent/AT502004B1/de not_active IP Right Cessation
• 2006
  • 2006-05-29 EP EP06741017A patent/EP1891701A1/de not_active Withdrawn
  • 2006-05-29 CN CNA2006800194231A patent/CN101199084A/zh active Pending
  • 2006-05-29 KR KR1020077030995A patent/KR20080034858A/ko not_active Withdrawn
  • 2006-05-29 WO PCT/AT2006/000218 patent/WO2006128204A1/de active Application Filing
  • 2006-05-29 JP JP2008513863A patent/JP2008543062A/ja active Pending

Patent Citations (4)

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