Abstract: An oil pump, in particular an electric or electromotive auxiliary pump for a motor vehicle, having a housing having an inlet on the admission side and an outlet on the pressure side, in addition to a pump rotor which is inserted in the housing such that it can rotate about an axis, and having at least one rotor part, a flexible housing component which is in the form of an elastic press plate and which extends over the cross-sectional surface of the pump rotor. The flexible pressure plate is maintained, in an advantageous manner, in the edge area of the second housing parts.

Abstract: A rotary electric machine having a stator and a rotor, in addition to an electric control device and a connection device which comprises at least one coupling element for electrically connecting the control device to one or several electrical lines and a mass element provided to connect to an electric mass potential. In order to improve the machine with respect to electromagnetic interference, the stator is connected to the mass element by a contact bridge which has a first securing section and a second securing section in addition to a bridge element arranged between the securing sections and includes a single-piece spring steel sheet which is at least partially sinuous.

Abstract: A rotary electric machine having a stator and a rotor, in addition to an electric control device and a connection device which comprises at least one coupling element for electrically connecting the control device to one or several electrical lines and a mass element provided to connect to an electric mass potential. In order to improve the machine with respect to electromagnetic interference, the stator is connected to the mass element by a contact bridge which has a first securing section and a second securing section in addition to a bridge element arranged between the securing sections and includes a single-piece spring steel sheet which is at least partially sinuous.

Abstract: A rotary electric machine having a stator and a rotor, in addition to an electric control device and a connection device which comprises at least one coupling element for electrically connecting the control device to one or several electrical lines and a mass element provided to connect to an electric mass potential. In order to improve the machine with respect to electromagnetic interference, the stator is connected to the mass element by a contact bridge which has a first securing section and a second securing section in addition to a bridge element arranged between the securing sections and includes a single-piece spring steel sheet which is at least partially sinuous.

Abstract: The present invention relates to a circuit board assembly, comprising a circuit board which has a first and a second solder region, which is galvanically separated from the first, and which furthermore has a separator arranged between the solder regions and rising out from the solder regions, having a power semiconductor component which has a housing having an output connection side, from which at least one control connection and a plurality of output connections protrude, which are arranged substantially adjacent to each other on the output connection side, wherein the control connection is electrically and mechanically connected to the first solder region and the output connections are electrically and mechanically connected to the second solder region and the control connection is separated from the output connections via the raised separator.

Abstract: The invention relates to a fan and a fan module, wherein the fan comprises: a fan hub which comprises a fan rotation axis to rotate in a predetermined direction, a plurality of fan blades comprising a lower end and an upper end, wherein each fan blade is attached with its lower end to the fan hub and extends radially outwardly from the fan hub, wherein each fan blade comprises a lower back sweep portion and an upper forward sweep portion, wherein a maximum ratio r/R of the lower back sweep portion is at least 0.90, wherein r is the local radius of a point of the fan blade edge, and R is the radius of the upper end of the fan blade.

Abstract: An electrical machine, in particular an electric motor of a motor vehicle, having a stator and having a rotor which has a rotation axis. An electrical machine can be a brushless electric motor (DC motor) or a synchronous machine, but also a generator. The stator or the rotor has an electromagnet structure, and the other has a permanent-magnet structure which comprises a first quantity of permanent magnets and a second quantity of permanent magnets. At at least the operating temperature (T), the magnetic coercive field strength (Hcji) of the first quantity is greater than the magnetic coercive field strength (Hcj2) of the second quantity. Further, two methods for producing hybrid magnets are provided.

Abstract: A drive unit for operating a device, in particular a device in a vehicle and a method for operating a drive unit are provided. An electrical drive assembly and a break assembly are combined and arranged together in a common housing. The breaking assembly could be a mechanical breaking assembly or an electrical break assembly. The break assembly automatically locks the shaft of the electrical drive assembly and thus provides self-locking capabilities.

Abstract: An electrical machine, in particular an electric motor of a motor vehicle, having a stator and having a rotor which has a rotation axis. In this case, an electrical machine can be a brushless electric motor (DC motor) or a synchronous machine, but also a generator. The stator or the rotor has an electromagnet structure and the other has a permanent-magnet structure which comprises a first quantity of permanent magnets and a second quantity of permanent magnets. At an operating temperature, the magnetic coercive field strength of the first quantity is greater than the magnetic coercive field strength of the second quantity.

Abstract: A brush system for an electric motor, having a substantially semiannular resistor housing into which an electric flat resistor is introduced, two resistor terminals which protrude from the resistor housing and can be coupled in an electrically conducting manner to a conductor path of the electric motor, and a substantially semi-circular support plate that includes two bus bars to electroconductively couple the conductor path to the terminals and to two brush elements. The two terminals are arranged on the same narrow side of the resistor housing.

Abstract: A fan of a motor vehicle is particularly suited as a main fan of an internal combustion engine. The fan has a fan wheel with an outer ring which has a substantially L-shaped ring cross section. The L-shape is defined with a radial limb and an axial limb. The radial limb has a cross-sectional enlargement on a free-end side.

Abstract: Electrical contact arrangement for an electric motor and method for producing same. The present invention relates to an electrical contact arrangement for an electric motor, in particular for an EC drive of a motor vehicle fan, comprising an elongate contact which runs perpendicular to a planar basic conductor, wherein the basic conductor is in the form of a leadframe, and a conductive cohesive and/or form-fitting and/or force-fitting connection is provided between the leadframe and the contact. The present invention also relates to a method for the production of said electrical contact arrangement.

Abstract: A method and a device for operating a closed-loop or open-loop speed-controlled electric motor of a fan drive, which motor is connected to an on-board system voltage of a motor vehicle and the motor speed of which is set to a defined first desired speed, wherein, if the on-board system voltage fluctuates, the motor speed is set to a desired speed that is lower compared with the first desired speed.

Abstract: A gear unit for an actuating drive, in particular a window lifter drive, of a motor vehicle is provided that includes a gear housing and a pivot bolt rotatably fixedly connected thereto for rotatably supporting a gear wheel, in particular of a worm gear, the pivot bolt has a second pivot section, which is adjacent to a first pivot section having a first outer diameter, and which has a free end section on the front, the outer diameter of the second pivot section being smaller than the outer diameter of the first pivot section at least over one part of it pivot section length.

Abstract: An electric machine having a stator and a rotor which is mounted so as to be rotatable about a rotor axis and has a rotor body, in which at least two permanent magnets are arranged in receptacles, a first of which component magnets is associated with a first set of permanent magnets, and a second of which component magnets is associated with a second set of permanent magnets. The permanent magnets of the first set differ from the permanent magnets of the second set with respect to the material composition, In particular to the magnetic properties, and wherein at least one permanent magnet of the first or second set or at least one composite body has a contour, the cross-sectional face of which, being located perpendicularly with respect to the longitudinal axis, decreases within the respective receptacle towards that end thereof which is radially further to the outside.

Abstract: An electrical machine is provided, in particular an electric motor having a stator and also a rotor which is mounted such that it can rotate about a rotor axis and has a rotor body, wherein permanent magnets are arranged in holders of the rotor body. The permanent magnets being composed of a mixed material, wherein the mixture is set in such a way that the mixed material has a remanence field strength Br of between 0.6 Tesla and 1 Tesla and a coercive field strength Hcj of between 1300 and 2500 KA/m. Permanent magnets or composite bodies can be arranged in holders, and the permanent magnets or composite bodies can have a contour, the cross-sectional area of said contour which is situated perpendicular to the longitudinal axis being reduced within the respective holder in the direction of the radially further outer end of said holder.

Abstract: A transmission unit of a motor vehicle, with a transmission having a transmission shaft and with an electric motor that is coupled thereto in an axial direction and that has a stator and that has a rotor arranged on a motor shaft and that is bearingless on the A-side. The electric motor includes an end plate on the B-side, and the stator is located at least partly inside a housing of the transmission.

Abstract: A method for operating a brushless, rotating electrical machine, including at least three phase windings, each of which has a first phase winding terminal and a second phase winding terminal. The phase windings are connected to each other, in particular the particular second phase winding terminals are connected to a shared star point, and phase-width-modulated voltage signals being applied separately to each individual phase winding, and at least one selected phase winding being at least temporarily connected to a constant electrical potential. To minimize switching operations and to reduce the alternating current component of the current source, the pulses of the pulse-width-modulated signals applied to the remaining phase windings are at least temporarily phase-shifted with respect to each other during the period in which the selected phase winding is connected to a constant electrical potential.

Abstract: An electric motor, in particular a radiator fan motor of a motor vehicle, has a stator which is fitted with a rotating-field winding, and a rotor which is mounted such that it can rotate in relation to the stator. A converter electronics system is provided, wherein a number of contact elements for insulation-free or enamel-insulated connection contacts of at least one component of the converter electronics system and/or for enamel-insulated winding ends of the rotating-field winding are mounted on a printed circuit board. The contact elements are in the form of clamping contacts or insulation-displacement terminal contacts.

Abstract: A method for positioning a brushless electric drive comprising a stator that has at least one phase winding to which a voltage signal can be applied, and a rotor equipped with magnetic poles. In the method, a voltage signal is applied to the at least one phase winding, the voltage signal generates a magnetic field as a result of the current flowing in the phase winding. The magnetic field putting the rotor into alignment, and as long as the rotor is in motion, the voltage signal is modified in accordance with the intensity of the current induced in the at least one phase winding by the moving rotor, in such a way that the induced current is increased.