Mahle International Gmbh

Mahle Behr Gmbh & Co. Kg

Matthias Ganz

Stefan Hirsch

Christopher Laemmle

Peter Sever

Volker Schall

Bernd Schaefer

Niklas Kull

Thomas Kalmbach

Oleksandr Pavlov

Janko Horvat

Jessica Kansy

Sebastian Egger

Michael Trebbe

A power electronics unit may include a circuit board and a cooling device. The circuit board may include at least one electronic component which, in a heat transfer region, is disposed flat against an electronics side of the circuit board. The cooling device may include at least one impingement jet chamber through which a cooling fluid is flowable from an inlet to an outlet. The cooling device may further include at least one nozzle plate having at least one flow nozzle. The at least one nozzle plate may be arranged in and divide the at least one impingement jet chamber into an inlet chamber and an outlet chamber, which may be fluidically connected to one another via the at least one flow nozzle. The at least one flow nozzle may accelerate and conduct the cooling fluid towards the heat transfer region of the at least one electronic component.

Power electronics unit

A cooling arrangement may include a fluid-tight housing in which a power electronics system and a dielectric fluid for cooling the power electronics system may be arranged. The dielectric fluid may be in heat-transferring contact with the power electronics system and may cool the power electronics system via a fluid movement. The fluid movement may be provided via acceleration forces acting on the cooling arrangement.

Cooling arrangement

A thermoelectric generator for a motor vehicle may include a housing. The housing may define a housing interior space. An outer thermal insulation may be arranged in the housing interior space. The outer thermal insulation may at least partially envelope an insulation interior space. A plurality of first stack discs and a plurality of second stack discs may be alternately stacked along a stack direction within the insulation interior space. The alternately stacked plurality of first stack discs and second stack discs may form a plurality of stack disc pairs. Each of the plurality of stack disc pairs may include a first stack disc and a second stack disc. The first stack disc and the second stack disc may define a gas flow path. At least one tube body may be positioned within at least one intermediate space defined between at least a first stack disc pair of the plurality of stack disc pairs and a second stack disc pair of the plurality of stack disc pairs adjacent to the first stack disc pair in the stack direction. The at least one tube body may define a coolant flow path. The at least one first stack disc pair may be in fluid communication with the at least one second stack disc pair via at least one connecting gas flow path. A thermoelectric module having at least one thermoelectrically active element may be disposed within the at least one intermediate space between the gas flow path and the coolant flow path. The thermoelectric module may include a hot side in thermal contact with the gas flow path and a cold side in thermal contact with the coolant flow path. An inner thermal insulation having at least one thermal insulation element may be disposed within the insulation interior space. The inner thermal insulation may be constructed and arranged to thermally insulate the gas flow path relative to the coolant flow path.

Thermoelectric generator, in particular for a motor vehicle

A cooling device for a battery system may include at least two battery units. The cooling device may include at least a first and a second cooling plate able to be flowed through respectively by a coolant. The first and second cooling plate may be arranged respectively for thermal coupling with a respective battery unit. The first and second cooling plate each may include a first fluid inlet, which is connected fluidically with a first fluid outlet via a first fluid duct extending along an extent direction, and a second fluid inlet, which is connected fluidically with a second fluid outlet via a second fluid duct extending along the extent direction.

Cooling device for a battery system, in particular of a motor vehicle

Growing community of inventors

Stuttgart, Germany

Matthias Ganz