Obrist Technologies Gmbh

Obrist Engineering Gmbh

Obrist Powertrain Gmbh

Martin Graz

Frank Obrist

Peter Giese

Oliver Obrist

Jochen Bont

Christian Schmälzle

Joachim Georg Roth

Gunnar Busse

Peter Gieze

A battery system, in particular for an aircraft, having a housing, which is sealed gas-tight, and a cell block, which is formed from a plurality of battery cells connected electrically and mechanically by contact plates. The housing can be connected to a vacuum pump in order to generate vacuum within the housing and a vacuum prevails within the housing, wherein at least one housing side wall of the housing is flexible enough that the housing side wall is tensioned together with the cell block by the vacuum acting within the housing. A vehicle, in particular an aircraft, may be electrified, at least in part, by such a battery system.

Battery system

The invention relates to a battery housing, in particular for an energy accumulator for a hybrid drive, comprising a tubular main body and at least two terminating covers, which are inserted into the main body and each have a cover plate that is offset inwards in the longitudinal direction of the main body and supports housing walls of the main body, wherein the terminating covers are each welded to the main body and all joints of the battery housing are formed without separate connecting elements.

Battery housing

The invention relates to a battery system, in particular for a hybrid drive, having a housing, a plurality of battery cells arranged inside the housing and a cooling element, wherein fluid connections and at least one electrical connection are arranged on the housing, said electrical connection being electrically coupled to the battery cells, and wherein the fluid connections comprise at least one coolant inlet and at least one coolant outlet, each of which is fluidically connected to the cooling element. The invention is characterized in that the housing comprises a tubular main body, which is sealed in a fluid-tight manner by a closure cap at each of the opposite end faces thereof, wherein the electrical connection is arranged on a first closure cap and the fluid connections are arranged on a second closure cap. The invention also relates to a motor vehicle having such a battery system.

Battery system with cooling device

The invention relates to a battery system, in particular for a hybrid drive, comprising a housing and a plurality of battery cells arranged within the housing, said cells being combined to give a cell block, wherein a container having a variable inner volume is arranged between the cell block and at least one housing wall, by means of which container the cell block can be braced relative to the housing, wherein the container is filled with a curable or cured medium.

For a technical object whose temperature is to be controlled, in particular a battery for an electric vehicle drive, there is provided a heat exchanger arrangement, the heat exchanger of which is in the form of a heat-exchanging pouch which has an inflow and outflow duct and which is in heat-conducting contact with internal surfaces of the object whose temperature is to be controlled. The heat-exchanging pouch is produced in a simple manner by means of edge welding of two foil pieces arranged one above the other. The mounting of said heat-exchanging pouch in a narrow gap space of a heat exchanger arrangement, and good heat transfer to adjacent walls, are made possible by means of a pressure pouch which is likewise formed from a foil material and which is filled with a compressible medium.

Heat-exchanger assembly

The battery has rod cells, which are arranged next to one another in multiple rows and the end-side electrical contacts of which are respectively electrically connected to one another in parallel and in series by a common contact plate. For effective cooling, a flat heat exchange pocket, through which a heat transfer medium flows, abuts against these contact plates. This heat exchange pocket consists of a multilayered thin film having an electrically insulating outer layer.

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Lustenau, Austria

Martin Graz