Hydro Aluminium Rolled Products Gmbh

Speira Gmbh

Hydro Aluminum Rolled Products Gmbh

Nemak Linz Gmbh

Hartmut Janssen

Thorsten Richter

Olaf Gussgen

Kathrin Eckhard

Andreas Siemen

Volker Denkmann

Franz Josef Feikus

Olaf Güßgen

Gernot Nitzsche

Manfred Mrotzek

Werner Droste

Rolf Gosch

Jochen Schwarz

Nico Eigen

Waldemar Krieger

Philipp Kramer

Mathis Ruppert

Thiemo Brüggemann

Holger Aretz

Martin Christoph Lentz

Katrin Kuhnke

Raimund Sicking

Gerd-Ulrich Grün

Gerhard Bermig

Volker Sass

Stefan Schlüter

Stefan Schluter

Volker Saß

Olaf GÜSSGEN

A battery cell housing having an aluminium alloy strip or sheet. The object of providing a battery cell housing having an aluminium alloy strip or sheet which, on the one hand, makes it possible to achieve recycling rates and, on the other hand, satisfies the requirements of a battery cell housing, in particular with regard to strength, electrolyte stability and electrical and thermal conductivity, is achieved in that the aluminium alloy strip or sheet has an aluminium alloy with the following alloy constituents in wt %:

Battery cell housing made of an aluminium alloy strip having a high recycling content

Use of an aluminium composite material in a thermal joining method, said material consisting of at least one aluminium core alloy and at least one external brazing layer consisting of an aluminium brazing alloy provided on one or both sides of the aluminium core alloy, wherein the aluminium brazing layer has a pickled surface. Reduced costs and a lower environmental impact is achieved by using an aluminium composite material in which the pickled surface of the aluminium brazing layer had been pickled by pickling with an acid, aqueous pickling solution containing at least one mineral acid and at least one complex-forming agent or a complexing mineral acid, wherein the removal of material in the pickling is between 0.05 g/mand 6 g/m, the aluminium composite material is used in a flux-free, thermal joining method, and the joining method is carried out in the presence of a protective gas.

Flux-free joining of aluminium composite materials

The invention relates to a brazable three-layered aluminium composite material having at least three layers with at least two different aluminium alloys, whereby an inner layer of the at least three layers is an aluminium brazing layer made from an aluminium brazing alloy, the other layers are configured as covering layers and include at least one further aluminium alloy, wherein the at least one further aluminium alloy has a higher solidus temperature than the liquidus temperature of the aluminium brazing alloy. The individual covering layers have a thickness which exceeds the thickness of the aluminium brazing layer by at least a factor of 1.5, preferably by a factor of 5. The brazable aluminium composite material is simply structured, has good brazing properties for the production of butt-joint brazing connections, significantly reduces the risk of a 'burning through' of brazed-on components and provides sufficient mechanical properties.

Aluminium composite material having an internal solder layer

The invention relates to a brazable three-layered aluminum composite material having at least three layers with at least two different aluminum alloys, whereby an inner layer of the at least three layers is an aluminum brazing layer made from an aluminum brazing alloy, the other layers are configured as covering layers and include at least one further aluminum alloy, wherein the at least one further aluminum alloy has a higher solidus temperature than the liquidus temperature of the aluminum brazing alloy. The individual covering layers have a thickness which exceeds the thickness of the aluminum brazing layer by at least a factor of 1.5, preferably by a factor of 5. The brazable aluminum composite material is simply structured, has good brazing properties for the production of butt-joint brazing connections, significantly reduces the risk of a 'burning through' of brazed-on components and provides sufficient mechanical properties.

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Hilden, Germany

Hartmut Janssen