Schaeffler Technologies Ag & Co .kg

Tobias Vogler

Raphael Fischer

Mark Lauger

Dorothee Stirnweiss

Darius Dlugal

Nicole Denzler

Dorothee Stirnweiß

A cooling jacket () for cooling an electric motor, in particular a stator (), wherein a first spiral line () for transporting a coolant is formed at least partially on the cooling jacket (). The aim of the invention is to provide a cooling system that is optimized in terms of mounting space and ensures axially equalized cooling. This aim is achieved in that a second spiral line () for transporting coolant is formed at least partially, and in that based on a common spiral axis R, both spiral lines () form an axially integrated double spiral, wherein the first spiral line () is an inflow line and the second spiral line () is a return flow line. The invention further relates to a deflection unit () for the return into the second line (), which substantially prevents the static pressure from dropping.

Cooling jacket and deflection unit for cooling jackets

A wheel hub motor for driving a motor vehicle is provided. Aging of the rolling element bearings used to support the rotor is prevented, while at the same time minimizing the emission of electromagnetic waves, in that the wheel hub motor includes a&#x2014;rotor,&#x2014;a hub (), &#x2014;a wheel bearing having a first bearing ring () which is non-rotatably and electrically conductively connected to the hub (), and a second bearing ring () which is non-rotatably and electrically conductively connected to the rotor, and&#x2014;a contact element () for creating an electrically conductive connection between said bearing rings (), the contact element () being supported against the hub () via a spring () and has a pressure contact with a potential equalization element () that is non-rotatably and electrically conductively connected to the second bearing ring ().

Wheel hub motor with potential equalization

A control arm base () for connecting a control arm (), particularly a divided control arm, for a wheel () to a vehicle, which control arm () includes at least two partial control arms () which can be connected on the one hand to a vehicle-side joint () and on the other to a wheel-side joint (). In order to realize a targeted influencing of the longitudinal and transverse rigidity of the control arm with simple conventional joints, the control arm base () includes at least two vehicle-connecting joints () for articulated connection of the control arm base () to the vehicle, and at least two partial control arm connecting joints () for the vehicle-side articulated connection of each of the partial control arms () to the control arm base (). The invention further relates to a wheel suspension that includes such a control arm base ().

Control arm base

A stator holding plate () for a wheel hub drive system, in particular for an electric and/or hybrid vehicle, which stator holding plate has a stator fastening portion (S) for the fastening of a stator () of an electric motor to the stator holding plate () and has an inverter fastening portion (I) for the fastening of an inverter () to the stator holding plate (). A wheel hub drive system equipped with the same.

Stator holding plate with inverter fastening function

A wheel hub drive system with an electric motor that can be arranged inside a wheel rim, whereby the electric motor is formed by rotor that is at least indirectly joined to a wheel hub and by means of a stationary stator that can be supplied with alternating current. With an eye towards obtaining more space for the vehicle occupants, it is proposed to arrange the converter with its entire power electronics unit on the stator so that the wheel hub drive system can be operated with direct current from the battery of the vehicle, or else no alternating current lines have to be laid in the vehicle. Consequently, the alternating current is generated by the converter that is arranged in a converter housing attached axially next to the stator.

Growing community of inventors

Herzogenaurach, Germany

Tobias Vogler