Siemens Aktiengesellschaft

Axel Ganster

Carsten Schuh

Jörg Zapf

Susanne Kornely

Jens Dahl Jensen

Hellmut Freudenberg

Randolf Mock

Christoph Hamann

Heiner Bayer

Günter Lugert

Andreas Wolff

Andreas Lenk

Stefan Denneler

Stefan Stegmeier

Albrecht Donat

Oliver Hennig

Erik Weisbrod

Franziska Lambrecht

Markus Lasch

Hubert Baueregger

Andreas Mantovan

Oliver Henning

Various embodiments of the teachings herein include an electronic module comprising: a circuit carrier with an electrically conductive thick film with a thickness of at least 0.5 millimeter; and a plurality of thermally conductive elements connected to one another by a thermally conductive material. The thermally conductive elements have a base area with rotational symmetry.

Electronic module, method for producing an electronic module, and industrial plant

The embodiments relate to a piezoelectric component including at least one fully active piezoelectric element comprising electrode layers and piezoelectric layers arranged therebetween. The electrode layers are conveyed to a lateral edge of the piezoelectric element and contacted there. The external electrode is attached in a structured fashion for electrical contacting and/or a structured external electrode is made available: The external electrode essentially includes two components, namely the contacting field and the contacting path. In the event of several piezoelectric elements (piezoelectric actuator in multilayer structure) stacked one above the other, the contacting path functions as a collector electrode, which connects the contacting fields of the piezoelectric elements to one another. The insulation path exists for the electrical insulation of the contacting path from electrode layers which are not to be contacted. A reliable contacting of the electrode layers is possible with the structure according to the invention. A fully active, piezoceramic multilayer actuator with the described contacting is used in automotive engineering for activating fuel injection valves.

Piezoelectric component with directly structured external contacting, method for manufacturing the component and use of said component

In a method for the production of a gradient encapsulation layeron a piezoelectric actuator, based on this gradient encapsulation layer, the piezoelectric actuatordoes notrequire an additional housing-like enveloping structure in order to be protected externally. The gradient encapsulation layeris produced by cold gas spraying of particles having different material properties.

Piezoelectric actuator with encapsulation layer having a thickness-varying property gradient

A piezoelectric component with at least one fully active piezoelement has electrode layers and interposed piezoelectric layers guided to a lateral edge of the piezoelement and contacted there. An insulating layer applied for electric contacting has an electric through-plating. An electrically conductive gas-phase deposition layer is applied directly to the electrode layer guided up to the lateral surface of the piezoelement by way of deposition from the gas phase in order to improve electric contacting. An external electrode is applied to the gas-phase deposition layer. In the case of several superposed stacked piezoelements (piezoactuator in multi-layer design), the external electrode functions as a collector electrode which connects the electrode layers to each other. The structure enables secure contacting of the electrode layers. A fully active piezoceramic multi-layer actuator with the described contacting may be used in automobile technology for activating fuel-injection valves.

Piezoelectric component with outer contacting, having gas-phase deposition, method for manufacturing component and use of component

According to various production methods for producing a piezoceramic multilayer actuator, in the course of the production method, multilayer locks () are electrochemically or mechanically processed in such a way that a recess structure is obtained. The lateral surfaces () of the electrodes () inside these recesses are electrically insulated using the slip casting method in order to be able to contact the remaining electrodes by imprinting an outer metallization.

Piezoceramic multilayer actuator and method for the production thereof

In a method for producing a multilayer encapsulation () of a piezo actuator () such that the piezo actuator () is protected towards the outside without having to use an additional enveloping housing-type structure, in order to produce the multilayer encapsulation (), an electrically insulating elastic layer () is first applied to the surface of the piezo actuator (), whereupon a metallic layer is applied to the electrically insulating elastic layer () so as to planarly cover the same.

Piezo actuator comprising a multilayer encapsulation, and method for the production thereof

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Schwindegg, Germany

Axel Ganster