Bayerische Motoren Werke Aktiengesellschaft

Elringklinger Ag

B Ayerische M Otoren W Erke a Ktiengesellschaft

Olav Finkenwirth

Bernd Kuhn

Thomas Hoefler

Franz-Josef Wetzel

Andreas Oswald Stoermer

Maximilian Danzer

Xiaofeng Yan

Tuncay Idikurt

Hans-Rainer Zerfass

Daniel Scherer

Azad Darbandi

Matthias Frahm

Jochen Gerschler

A method for producing an energy storage cell, in particular a lithium-ion cell, whose housing is elastically deformable include introducing at least one electrode coil or electrode stack, having at least two electrodes and at least one separator arranged between the electrodes, into a housing. The method also includes introducing an electrolyte into the housing, and filling the housing with gas and generating an excess pressure in the housing, by which at least one housing wall of the housing is curved outward. The housing is sealed in a gas-tight manner such that the excess pressure in the housing and the curvature of the at least one housing wall are maintained, and such that the housing is elastically deformable in a direction perpendicular to the at least one curved housing wall.

Method for producing energy storage cells, energy storage cells, battery module, and motor vehicle

A sealing structure in a fuel cell and/or an electrolyzer (particularly a solid-oxide fuel cell and/or a solid-oxide electrolyzer) is arranged between neighboring separator plates of a cell stack. The sealing structure is constructed in at least two layers, including at least one insulating layer and at least one sealing layer.

Seal construction for a fuel cell electrolyser and process for making a fuel cell with same

The invention relates to a fuel cell stack which is composed of several individual fuel cells that are stacked on top of each other. Each of said fuel cells comprises a cathode-electrolyte-anode unit () and a perforated film () which distributes a combustible gas across the first electrode surface thereof, supports the cathode-electrolyte-anode unit (), and is combined into a cassette () that is provided with a hollow space along with an additional structure (). The combustible gas reaches the first electrode (A) via said cassette (). The side of each cassette (), which is located opposite the cathode-electrolyte-anode unit (), is provide with a structure for distributing atmospheric oxygen across the surface of the second electrode of a neighboring cassette such that the stack is formed by several superimposed cassettes (), between the film () of which a cathode-electrolyte-anode unit () and the structure for distributing atmospheric oxygen across the surface of the second electrode are disposed along with the additional structure (). In order to brace the individual cassettes against each other in a housing or similar, the inventive stack comprises at least one bracing cassette, the walls of which are impermeable and which is filled with a material that expands to a relatively great extent when being heated.

Fuel cell stack

A fuel cell includes a cathode-electrolyte-anode unit, and a perforated foil structure distributes fuel gas over an electrode surface thereof. Longitudinal axes of at least some of the holes forming perforations in the foil are inclined differently relative to the foil surface such that, near a fuel gas feed, the outlet openings of the holes facing the electrode are oriented at least slightly toward the area of the fuel gas outlet from the fuel cell. Near a fuel gas outlet, the inlet openings of the holes facing the electrode are oriented at least slightly to the area of the fuel gas feed. However, holes whose inlet openings facing away from the electrode are oriented toward the fuel gas feed, and holes whose outlet openings facing away from the electrode are oriented toward the fuel gas outlet, may also be arranged alternately side-by-side.

Fuel cell having a perforated foil distributing the fuel gas over the electrode surface

Growing community of inventors

Munich, Germany

Olav Finkenwirth