Epcos Ag

Jan-Thorsten Reszat

Reinhard Gabl

Franz Rinner

Martin Galler

Georg Kuegerl

Christoph Auer

Dieter Somitsch

Markus Laussermayer

A piezoelectric actuator of a multilayer design includes outer electrodes that are fastened by means of a bonding layer applied by thermal spraying. For example, the outer electrodes are formed as a woven wire fabric. Furthermore, a method for fastening an outer electrode in a piezoelectric actuator is specified.

Method of forming a piezoelectric actuator

Piezoelectric actuator of a multilayer design and method for fastening an outer electrode in a piezoelectric actuator

A multilayer piezo actuator is specified, in which piezoelectric layers and electrode layers are arranged to form a stack. Electrical contact is made with the electrode layers via two external electrodes which consist of wires which are woven with one another. The external electrodes are in this case connected over their entire area to the side surfaces of the stack. A method is also specified for fitting an external electrode.

Piezo actuator with external electrode soldered to outer face

A piezoactuator has multilayer construction. Piezoelectric layers and electrode layers are alternatingly disposed one over the other in a stack. A number of the electrode layers are electrically conductively connected to a contact pin. A continuation is electrically conductively disposed on the contact pin. The continuation has a contact point with the contact pin and a free end for producing an electrical connection of the piezoactuator. A straight line extending through the contact point and the free end of the continuation encloses an angle with the longitudinal axis of the contact pin that is greater than 0&#xb0; and less than 180&#xb0;.

Piezoactuator having electrical contact

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Karlsruhe, Germany

Jan-Thorsten Reszat