Swissbatt Ag

Wyon Ag

Philipp Wyser

Urban Schnell

Jean-Noël Fehr

Paul Julian Wyser

Walter Döll

A battery cell casing comprises a first casing element () with a first contact surface () and a second casing element () with a second contact surface (). In an assembled position the first and second contact surfaces () contact each other and the first and second casing elements () encase active materials () of a battery cell in an interior space. At least one seal layer is arranged between the first and second contact surfaces () to seal the interior space, wherein one of first and second contact surface () comprises a void volume layer and the other of first and second contact surface () comprises a formable material layer, which fills voids on a surface of the void volume layer hermetically in the assembled position and forms the seal layer.

Battery cell casing with seal

The battery comprises a can, a cap, and a seal. The cap fits into the can to build a housing with a closed interior volume, and the seal sealing cap and can in relation to one another. A porous membrane spills the interior volume into two subcells with each subcell containing one or multiple layers of electrolyte and one or multiple layer structures. The latter comprise a conducting film at least partially coated with active material and contain one or more through-holes. The layer structure is parallel to the porous membrane and the conducting film is connected to either can or cap. This construction allows for a large area of contact between active material and electrolyte and as between electrolyte and porous membrane which result in a high performance of the battery.

Growing community of inventors

Appenzell, Switzerland

Philipp Wyser