Vitesco Technologies Gmbh

Temic Automotive Electric Motors Gmbh

Continental Automotive Gmbh

Sönke Gürtler

Holger Fröhlich

Peter Birke

Michael Keller

Knut Welke

Swen Wiethoff

Axel Rudorff

Nevzat Güner

Reinhard Kassen

David Charles

Rogelio Villarroel

Martin Voss

Reinhard Ganghofner

Ingo Dziedzek

An electric machine for a drivetrain of a motor vehicle may comprise: a rotor with a rotor laminated core; a stator with winding heads on opposite end faces; and a housing with a a cooling liquid reservoir. The rotor core comprises multiple stacked laminations each with an aperture connecting the end faces to one another. The apertures of adjacent laminations are offset in a circumferential direction so: a first helical cooling channel connects an inner region of the core to a first end face; a second helical cooling channel connects the inner region of the core to a second end face; and the first cooling channel and the second cooling channel are oriented oppositely with respect to one another and are connected via a passage within the rotor laminated core to a feed line conducting the cooling liquid within the rotor shaft.

Electric machine with helical cooling channels

The invention relates to a battery holder () for galvanic cells, in which a first honeycomb structure (to), comprising a lower and an upper basic cooling body () and at least one intermediate cooling body (), is provided, wherein in each case, galvanic cells can be arranged on a cell level (to) in each case between one of the basic cooling bodies () and one of the intermediate cooling bodies () and/or between two of the intermediate cooling bodies (), wherein the galvanic cells of one of the cell levels (to) are displaced to the side to the galvanic cells of at least one adjacent cell level (to) by half the width of a galvanic cell, and wherein the intermediate cooling body () and the basic cooling bodies () are formed in an area between the galvanic cells according to the outer contours of the galvanic cells, and wherein each of the cooling bodies () comprises at least on one end which lies in an axial direction to the galvanic cells a cooling chamber (), through which a cooling medium (K) can flow, into which the cooling medium (K) can flow from at least one cooling chamber (K) of at least one adjacent cooling body () and/or from which the cooling medium (K) can flow out into at least one cooling chamber () of at least one of the adjacent cooling bodies (), wherein at least one cooling chamber () of at least one of the cooling bodies () comprises a cooling agent inflow () and/or a cooling agent outflow ().

Method and device for determining the ageing of a battery

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Berlin, Germany

Sönke Gürtler