Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Continental Automotive Gmbh

Katrin Benkert

Carsten Schuh

Thomas Soller

Stefan Denneler

Martin Koletzko

Werner Hartmann

Sylvio Kosse

Morgane Radanielina

Francois Bamiere

Steffen Lang

Harald Landes

Harald Johannes Kastl

Paul Gregor Nikolic

Andreas Lenk

Norbert Wenzel

Johann Holweg

Thomas Rettenmaier

André Leonide

Hermann Bödinger

Rolf Neubert

Various embodiments include a method for producing a ceramic insulator for a high-voltage or medium-voltage switching system comprising: attaching a base material for an equipotential layer between two axially symmetrical ceramic structural elements; disposing the electrically conductive equipotential layer between the two ceramic structural elements; and joining the two ceramic structural elements to form a unitary body along a symmetry axis of a first of the two elements.

Ceramic insulator

A vacuum interrupter includes a housing having at least one annular ceramic insulating element which forms a vacuum chamber. A contact system has two contacts which are movable relative to one another. A capacitive element has two electrodes and a dielectric material disposed between the electrodes. The capacitive element is form-lockingly mounted on the insulating element and has a capacitance between 400 pF and 4000 pF. A high-voltage switching assembly including the vacuum interrupter is also provided.

Vacuum interrupter and high-voltage switching assembly

Various embodiments include an insulator arrangement for a high-voltage or medium-voltage assembly comprising an axially symmetrical insulating structure element having two annular base regions separated from one another by an annular blocking region. The relative permittivity of the material of the blocking region is at least twice as high as the relative permittivity of the material of the base region.

Insulation arrangement for a high or medium voltage assembly

The present disclosure relates to semiconductors. Some embodiments may include a series circuit arrangement of power semiconductors comprising: cooling-water boxes arranged on the semiconductors and electrically connected to them; two cooling-water distributor lines; respective branchings on the cooling-water distributor lines for the cooling chambers; and a control electrode arranged on the cooling-water distributor lines. The cooling chambers are connected in parallel between the cooling-water distributor lines with respect to a cooling-water stream. The cooling chambers are connected to the branchings via a respective connecting line. For at least some of the cooling chambers, the branchings on the cooling-water distributor lines are arrayed relative to the position of the respective cooling chamber in offset manner in relation to a geometrically shortest possible link to the cooling-water distributor lines, so that a difference of potential between the cooling chambers and the branchings is minimized.

Series circuit arrangement of power semiconductors

A storage structure of an electrical metal-air energy storage cell is provided having an active storage material. The storage structure has a core region and at least one shell region, wherein the material in the core region has a higher porosity than the material of the shell region.

Storage structure of an electrical energy storage cell

An energy conversion cell includes an electrochemical conversion unit. The energy conversion cell has an electrically positive side with a process gas supply and an electrically negative side. The electrochemical conversion unit, which has a self-supporting substrate and a number of functional layers, is disposed between the two sides. The electrochemical conversion unit has a positive electrode and a negative electrode. The negative electrode includes a porous metallic, self-supporting substrate.

Energy conversion cell having an electrochemical conversion unit

A storage element for a solid-electrolyte battery is provided, having a main body which is composed of a porous matrix of sintered ceramic particles, and also having a redox system which is composed of a first metal and/or at least one oxide of the first metal, wherein a basic composition of the storage element comprises at least one further oxide from the group comprising Y2O3, MgO, Gd2O3, WO3, ZnO, MnO which is suitable for forming an oxidic mixed phase with the first metal and/or the at least one oxide of the first metal.

Storage element

A storage element for a solid electrolyte battery is provided, having a main member including a porous ceramic matrix in which particles that are made of a first metal and/or a metal oxide and jointly form a redox couple are embedded. The storage element further includes particles made of another metal and/or an associated metal oxide, the other metal being electrochemically more noble than the first metal.

Storage element for a solid electrolyte battery

A method for producing a piezo actuator includes: providing a green stack including alternately successive green films and inner electrode layers; forming trenches on the outside green stack in areas in which the inner electrode layers are intended to be electrically insulated from the corresponding outer electrodes, the trenches shortening the inner electrode layers from the outside of the green stack toward the inside; filling the trenches with an electrically insulating slurry; further processing the green stack, including filling the trenches with slurry, such that the green films produce piezo electric layers and the green stack produces a piezo stack; mounting two outer electrodes on the outside of the piezo stack, such that the two outer electrodes are alternately electrically connected to the inner electrode layers. The trenches may be filled with the slurry using one of the following methods; screen printing, immersion, spraying, or vacuum infiltration.

Method for producing a piezo actuator and piezo actuator

A piezoceramic composition has a nominal empirical formula of PbREAE[ZrTi(FeW)]O. RE is a rare earth metal with a fraction b and AE is an alkaline earth metal with a fraction c. Iron is present with an iron fraction f&#xb7;z, and tungsten with a tungsten fraction w&#xb7;z. In addition, the following relationships apply: a&#x3c;1; 0=b=0.15; 0=c=0.5; f&#x3e;0; w&#x3e;0; 0.1=f/w=5; x&#x3e;0; y&#x3e;0; z&#x3e;0 and x+y+z=1. A method of producing a piezoceramic material using the piezoceramic composition has the steps: a) provision of a green ceramic body with the piezoceramic composition, and b) heat treatment of the green body, a piezoceramic of the piezoceramic material being produced from the piezoceramic composition. The heat treatment encompasses calcining and/or sintering. The piezoceramic composition undergoes compaction at below 1000&#xb0; C. Metals which melt at low temperature (such as silver or a silver-palladium alloy with a low palladium content, for example) can therefore be sintered together with the piezoceramic composition.

Lead zirconate titanate with iron/tungstein doping, method of producing a piezoceramic material with the lead zirconate titanate, and use of the piezoceramic material

A piezoceramic composition of a calculated empirical formula PbREAE[ZrTi(NiMo)]O, wherein RE represents a rare earth metal having a rare earth metal content b, AE represents an alkaline earth metal having an alkaline earth metal content c, nickel is provided with a nickel content n.z, and molybdenum is provided with a molybdenum content m.z. Furthermore, the following correlations apply: a&#x3c;1; 0=b=0.15; 0=c=0.5; n&#x3e;0; m&#x3e;0; 0.1=n/m=5; x&#x3e;0; y&#x3e;0; z&#x3e;0, and x+y+z=1. In a method for producing a piezoceramic component a) a green ceramic member containing the piezoceramic composition is supplied; and b) the green member is subjected to a thermal treatment such that the piezoceramic material of the component is produced from the piezoceramic composition. The thermal treatment encompasses calcining and/or sintering of the piezoceramic composition. The piezoceramic composition is compressed below 1000&#xb0; C., thus allowing metals melting at a lower temperature to be sintered along with the piezoceramic composition.

Nickel-molybdenum-doped lead zirconate titanate, method for the production of a piezoceramic component using said lead zirconate titanate, and use of the piezoceramic component

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Schwaig, Germany

Katrin Benkert