Patents by Inventor Lukas WITTCHEN

Lukas WITTCHEN 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).

  • Patent number: 11211630
    Abstract: A housing is provided for a fuel cell stack. The housing includes two end plates, two opposite side walls, a lateral connecting wall, and at least one media exchange element. The two end plates are arranged at the two ends of the fuel cell stack. The two opposite side walls connect the end plates to each other. The lateral connecting wall connects the opposite side walls to each other. The at least one media exchange element has media connections. At least the two end plates are each designed as an extruded supporting structure. The media connections are not fed across the end plates.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: December 28, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Stefan Haase, Fabian Heining, Lukas Wittchen
  • Patent number: 10892510
    Abstract: A method is provided for producing an energy supply unit for a vehicle having a housing and a stack, realized as a fuel-cell stack, battery stack or capacitor stack, arranged in the housing. The method includes providing the housing, including first and second tie-rod plates and first and second pressure-plate arrangements, wherein each pressure-plate arrangement is fastened to each tie-rod plate, arranging the stack between the two tie-rod plates and between the two pressure-plate arrangements, applying a bracing force to the two pressure-plate arrangements for the purpose of bracing the stack, and fastening at least the first pressure-plate arrangement to both tie-rod plates while the bracing force is being maintained upon the two pressure-plate arrangements. At least one pressure-plate arrangement includes a tolerance compensation system including an end plate securely connected to the tie-rod plates, a contact-pressure plate arranged between the end plate and the stack, and a positioning arrangement.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: January 12, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Thomas Hoefler, Paul Eitzenberger, Martin Moser, Lukas Wittchen, Stefan Haase
  • Patent number: 10673039
    Abstract: A housing is provided for accommodating a stack of fuel cells, batteries or capacitors, including a first half-shell and a second half-shell opposite the first half-shell, a first pressure plate arrangement and a second pressure plate arrangement opposite the first pressure plate arrangement, the stack being accommodated between the two half-shells and between the two pressure plate arrangements, each half-shell gripping each pressure plate arrangement on the outer face thereof.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: June 2, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Thomas Hoefler, Paul Eitzenberger, Martin Moser, Lukas Wittchen
  • Publication number: 20180294453
    Abstract: A housing is provided for accommodating a stack of fuel cells, batteries or capacitors, including a first half-shell and a second half-shell opposite the first half-shell, a first pressure plate arrangement and a second pressure plate arrangement opposite the first pressure plate arrangement, the stack being accommodated between the two half-shells and between the two pressure plate arrangements, each half-shell gripping each pressure plate arrangement on the outer face thereof.
    Type: Application
    Filed: June 15, 2018
    Publication date: October 11, 2018
    Inventors: Thomas HOEFLER, Paul EITZENBERGER, Martin MOSER, Lukas WITTCHEN
  • Publication number: 20180294503
    Abstract: A method is provided for producing an energy supply unit for a vehicle having a housing and a stack, realized as a fuel-cell stack, battery stack or capacitor stack, arranged in the housing. The method includes providing the housing, including first and second tie-rod plates and first and second pressure-plate arrangements, wherein each pressure-plate arrangement is fastened to each tie-rod plate, arranging the stack between the two tie-rod plates and between the two pressure-plate arrangements, applying a bracing force to the two pressure-plate arrangements for the purpose of bracing the stack, and fastening at least the first pressure-plate arrangement to both tie-rod plates while the bracing force is being maintained upon the two pressure-plate arrangements. At least one pressure-plate arrangement includes a tolerance compensation system including an end plate securely connected to the tie-rod plates, a contact-pressure plate arranged between the end plate and the stack, and a positioning arrangement.
    Type: Application
    Filed: June 13, 2018
    Publication date: October 11, 2018
    Inventors: Thomas HOEFLER, Paul EITZENBERGER, Martin MOSER, Lukas WITTCHEN, Stefan HAASE
  • Publication number: 20170125834
    Abstract: A housing is provided for a fuel cell stack. The housing includes two end plates, two opposite side walls, a lateral connecting wall, and at least one media exchange element. The two end plates are arranged at the two ends of the fuel cell stack. The two opposite side walls connect the end plates to each other. The lateral connecting wall connects the opposite side walls to each other. The at least one media exchange element has media connections. At least the two end plates are each designed as an extruded supporting structure. The media connections are not fed across the end plates.
    Type: Application
    Filed: January 11, 2017
    Publication date: May 4, 2017
    Inventors: Stefan HAASE, Fabian HEINING, Lukas WITTCHEN
  • Publication number: 20170077542
    Abstract: A fuel cell housing has at least one portion that has at least three layers, including a first, outward-facing layer designed as an electrically conductive layer, a second layer for absorbing mechanical forces and as a penetration shield, and a third layer designed as a high voltage-insulating, hydrogen-insulating layer.
    Type: Application
    Filed: November 25, 2016
    Publication date: March 16, 2017
    Inventors: Johannes SCHMID, Lukas WITTCHEN, Andreas BUCHNER, Maximilian ZETTL