Patents by Inventor Jan Nekarda

Jan Nekarda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250187109
    Abstract: A device and a method for forming a structure on a workpiece by processing radiation while the workpiece is moved by a transport device, in which correction data of the workpiece are acquired by optical sensors. The correction data includes movement data of the workpiece and/or position data of a structure created on the workpiece by the processing radiation, and, dependent on the correction data, the deflection of processing radiation brought about by a deflection unit is determined, in particular corrected.
    Type: Application
    Filed: March 31, 2023
    Publication date: June 12, 2025
    Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Georg HOPPE, Fabian MEYER, Jale SCHNEIDER, Andreas BRAND, Simon Holger GUTSCHER, Jan NEKARDA
  • Patent number: 12317607
    Abstract: A method for producing a solar cell string includes: providing a solar cell stack having at least five solar cells which each have a front side and a rear side, the solar cells are arranged in overlapping fashion; and forming electrically conductive connections between the solar cells by: arranging an electrically conductive first connecting element on the solar cell stack and forming electrically conductive connections; dividing the first connecting element into a first group of cell connectors; arranging an electrically conductive second connecting element on the solar cell stack and forming electrically conductive connections; and dividing the second connecting element into a second group of cell connectors.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: May 27, 2025
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Jan Tobias Paschen, Jan Nekarda, Andreas Brand
  • Publication number: 20240178332
    Abstract: A method for producing a solar cell string includes: providing a solar cell stack having at least five solar cells which each have a front side and a rear side, the solar cells are arranged in overlapping fashion; and forming electrically conductive connections between the solar cells by: arranging an electrically conductive first connecting element on the solar cell stack and forming electrically conductive connections; dividing the first connecting element into a first group of cell connectors; arranging an electrically conductive second connecting element on the solar cell stack and forming electrically conductive connections; and dividing the second connecting element into a second group of cell connectors.
    Type: Application
    Filed: March 17, 2022
    Publication date: May 30, 2024
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: Jan Tobias PASCHEN, Jan NEKARDA, Andreas BRAND
  • Publication number: 20240170594
    Abstract: A solar cell string, includes a first photovoltaic solar cell A and at least one second photovoltaic solar cell B, the solar cell A having at least one metallic electrode A and the solar cell B having at least one metallic electrode B, the electrode A being electrically conductively connected to the electrode B by a cell connector of the solar cell string. The cell connector is a flexurally slack cell connector, at least partly covering a side of the solar cell A and the electrode A in a cell connector covering region A, the connector is at least partly directly electrically conductively connected to the electrode A in the connector covering region A. The cell connector is at least partly directly electrically conductively connected to the electrode B in the cell connector covering region B, and the cell connector covering region A or the cell connector covering region B.
    Type: Application
    Filed: March 17, 2022
    Publication date: May 23, 2024
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventors: Jan NEKARDA, Jan PASCHEN, Oliver JOHN, Gernot EMANUEL
  • Patent number: 11588070
    Abstract: A method for producing a photovoltaic solar cell, including the method steps: A. providing at least one solar cell precursor having at least one base and at least one emitter; B. providing a metal film on a back side of the solar cell precursor, so that the metal film is electrically conductively connected to the base or the emitter, the metal film being formed as an integral component of the back side contact and the solar cell being terminated on the back side. The at least one cell connection region on at least one side of the metal film overhangs the edge of the solar cell precursor by at least 1 mm, preferably by at least 3 mm.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: February 21, 2023
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Jan Nekarda, Andreas Brand, Martin Graf, Angela De Rose, Achim Kraft
  • Publication number: 20210005773
    Abstract: A method for producing a photovoltaic solar cell, including the method steps: A. providing at least one solar cell precursor having at least one base and at least one emitter; B. providing a metal film on a back side of the solar cell precursor, so that the metal film is electrically conductively connected to the base or the emitter, the metal film being formed as an integral component of the back side contact and the solar cell being terminated on the back side. The at least one cell connection region on at least one side of the metal film overhangs the edge of the solar cell precursor by at least 1 mm, preferably by at least 3 mm.
    Type: Application
    Filed: March 8, 2019
    Publication date: January 7, 2021
    Applicant: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Jan NEKARDA, Andreas BRAND, Martin GRAF, Angela DE ROSE, Achim KRAFT
  • Patent number: 10644189
    Abstract: The invention relates to a method for stabilizing a photovoltaic silicon solar cell, including a regeneration step in which a semiconductor substrate of the solar cell which are heated to at least 50° C. is injected with charge carriers. The invention is characterized in that a degradation step is carried out before the regeneration step, wherein the solar cell is subjected to radiation, in particular laser radiation, having an illumination intensity of at least 5.000 W/m2 and the solar cell is simultaneously cooled. The invention also relates to a device for stabilizing a photovoltaic silicon solar cell.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: May 5, 2020
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Jan Nekarda, Andreas Brand, Stefan Rein, Fabian Fertig, Karin Krauss
  • Publication number: 20190027632
    Abstract: The invention relates to a method for stabilizing a photovoltaic silicon solar cell, including a regeneration step in which a semiconductor substrate of the solar cell which are heated to at least 50° C. is injected with charge carriers. The invention is characterized in that a degradation step is carried out before the regeneration step, wherein the solar cell is subjected to radiation, in particular laser radiation, having an illumination intensity of at least 5.000 W/m2 and the solar cell is simultaneously cooled. The invention also relates to a device for stabilizing a photovoltaic silicon solar cell.
    Type: Application
    Filed: August 25, 2016
    Publication date: January 24, 2019
    Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Jan Nekarda, Andreas Brand, Stefan Rein, Fabian Fertig, Karin Krauss