Classifications

• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
  • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
  • H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
  • H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
  • H10F19/906—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells characterised by the materials of the structures
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
  • H10F71/00—Manufacture or treatment of devices covered by this subclass
  • H10F71/137—Batch treatment of the devices
  • H10F71/1375—Apparatus for automatic interconnection of photovoltaic cells in a module
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
  • H10F77/00—Constructional details of devices covered by this subclass
  • H10F77/40—Optical elements or arrangements
  • H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
  • H10F77/488—Reflecting light-concentrating means, e.g. parabolic mirrors or concentrators using total internal reflection
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/50—Photovoltaic [PV] energy
  • Y02E10/52—PV systems with concentrators

Definitions

• the invention relates to a method for producing a solar module from a plurality of solar cells connected in series by means of cell connectors, wherein the cell connectors are mechanically fastened to the solar cells by soldering and are electrically contacted with their busbars. It further relates to an arrangement for carrying out these methods.
• the connector dimensions are limited in thickness, although for physical reasons, thicker connectors are desirable.
• copper strips must be dipped tinned due to the soldering process. It also areas that are not required for soldering, provided with relatively thick tin layers, which increases the cost. It should be pointed out that the price of the coating plays an even greater role, above all because of the conversion to lead-free solders.
• the invention is based on the idea of replacing the material-consuming and thus cost-intensive tinning of cell connectors with a material-saving other process of solderable machining.
• the invention is based on the consideration of replacing the material-costly silver coating of LHS-type cell connectors with a more efficient and cost-effective thin-film method. It also includes the idea of using a material-saving coating method of this type, which is basically suitable for applying the required coating.
• the invention finally proposes that the cell connectors be made solderable or permanently highly reflective by means of spraying the solderable alloy or highly reflective coating in a plasma spraying process, thermal spraying process or cold gas spraying process in connection areas and then soldered onto the busbars.
• the proposed method can selectively solder copper tapes. This can reduce the cost of the connector.
• non-solderable connectors can also be soldered in this way. Possible alternatives to copper bands are z. B. aluminum connector.
• the process has a positive effect on the mechanical stress of the connection in use.
• cell connector sections which lie in the connected state of the solar module in the distance between adjacent solar cells, are exempt from the spraying of a solderable alloy and a coating with solder. Since the area between the cells is not soldered, the strength is lower there, and the material can deform and thereby absorb stresses acting on the solar cells.
• the cell connectors on both surfaces can be made solderable locally by spraying the solderable connection only in those sections which, when soldered onto the solar cells, face their respective surface.
• a highly reflective material is sprayed as a thin layer onto the patterned area.
• This highly reflective layer may be a component or a combination of layers.
• These can z. B. reflective metal layers are coated with a plastic protective layer by means of Plasma process can be brought to the cell connector.
• the protective layer has the task of completing under normal circumstances oxidizing (ie unprotected) metal so that it retains its reflective properties over the life of the module.
• Corresponding protective layers are known from the literature; see. z. B. DE 112005001068 T5.
• the FIGURE shows a schematic representation of a coating arrangement 1 which comprises two adjacent coating chambers 3, 5 which are adjacent to each other and which are advantageously also vacuum-technologically connected, each with two plasma spray guns 3a, 3b and 5a, 5b.
• a conveyor 7 with corresponding (not separately designated) drives conveys cell connector tapes 9a, 9b through the coating system.
• the cell connector strips 9a, 9b are each solderable in sections by spraying with a suitable metal by the spray guns 3a, 3b on the front side and by the spray guns 5a, 5b on the rear side made.
• the operation of the coating installation 1, in particular of the plasma spray guns 3a, 3b and 5a, 5b, is controlled by a process control device 11 in a manner known per se in adaptation to the specific process configuration.
• the spray guns directed at the front and back of the connector ribbons may also be arranged in a single coating chamber, and the connector ribbons may also be solderably coated on both surfaces over their entire length.
• the coating system can be controlled so that neither the top nor the bottom are coated in predetermined portions of the connector in order to obtain these sections as highly flexible as possible.
• the coating arrangement shown in the figure is basically also for the application of a highly reflective coating on the front (in

Landscapes

• Coating By Spraying Or Casting (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47324057

Family Applications (1)

Country Status (2)

Citations (9)

• 2012
  • 2012-01-13 DE DE102012200497A patent/DE102012200497A1/de not_active Withdrawn
  • 2012-11-14 WO PCT/EP2012/072564 patent/WO2013104452A1/fr not_active Ceased

Patent Citations (9)

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