Abstract: A cooling body for the regulator of an electric machine, which regulator may be a voltage regulator of a DC generator of a vehicle, includes a heat exchange surface with an inflow region and an outflow region. A cooling air flow may be applied to the heat exchange surface during the operation of the electric machine. The cooling air stream impinges on the heat exchange surface in the inflow region and leaves the heat exchange surface from the outflow region. The heat exchange surface is shaped differently in the inflow region than in the outflow region. Because of the shape of the heat exchange surface, the direction in which the cooling air is applied is different compared to conventional surfaces.

Abstract: The present invention relates to high-current plug-in connectors, in particular to unipolar high-current plug-in connectors for wind turbine generator systems, which can be arranged beside one another in a space-saving manner and can also meet high requirements on the current-carrying capacity. According to the invention, this is achieved in that cross-sections of which the longitudinal extent exceeds the transverse extent are selected for the plug-in and coupling contact. This means that the dimension in the transverse direction can be restricted and simultaneously the cable cross-section and the contact surface required from an electrical point of view are provided by the increased longitudinal extent. Moreover, the plug and the coupling comprise a visible mechanical coding, which prevents accidental reversal of the polarity of adjacently arranged cables.

Abstract: The present invention relates to high-current plug connectors, in particular to electrical contact elements for plug connectors of this type, which are distinguished by low heating even at high currents, and to a corresponding method for manufacturing contact elements of this type. According to the invention, for this purpose, the contact element is made in one piece by internal high-pressure forming from a tubular blank. As a result, the contact element has at each point substantially the same line cross section, so that no local electrical or thermal load peaks can occur.

Abstract: The present invention relates to high-current plug-in connectors, in particular to unipolar high-current plug-in connectors for wind turbine generator systems, which can be arranged beside one another in a space-saving manner and can also meet high requirements on the current-carrying capacity. According to the invention, this is achieved in that cross-sections of which the longitudinal extent exceeds the transverse extent are selected for the plug-in and coupling contact. This means that the dimension in the transverse direction can be restricted and simultaneously the cable cross-section and the contact surface required from an electrical point of view are provided by the increased longitudinal extent. Moreover, the plug and the coupling comprise a visible mechanical coding, which prevents accidental reversal of the polarity of adjacently arranged cables.

Abstract: The present invention relates to high-current plug connectors, in particular to electrical contact elements for plug connectors of this type, which are distinguished by low heating even at high currents, and to a corresponding method for manufacturing contact elements of this type. According to the invention, for this purpose, the contact element is made in one piece by internal high-pressure forming from a tubular blank. As a result, the contact element has at each point substantially the same line cross section, so that no local electrical or thermal load peaks can occur.

Abstract: The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annular closing member (10) located between adjacent magnet poles (21, 23). The magnet wheel halves (21, 23) can be inserted into pockets (11) of the closing member (10) along with the magnet poles (22, 24) thereof such that the closing member (10) overlaps the magnet poles (22, 24) on the edge in at least some areas. Also disclosed is a closing member (10).

Abstract: A cooling body for the regulator of an electric machine, especially for a voltage regulator of a DC generator of a vehicle including a heat exchange surface, that is able to have applied to it a cooling air flow during the operation of the electric machine, having an inflow region, in which the cooling air stream impinges on the heat exchange surface, and an outflow region from where the cooling air stream leaves the heat exchange surface. The heat exchange surface is shaped differently in the inflow region and in the outflow region and is able to have flow of the cooling air applied to it in a different manner.

Abstract: An electrical machine, in particular a rotary current generator for motor vehicles, is proposed which has a housing (13) in which a stator (16) is retained, such that a coolant can flow around the outside of the stator (16) from one of its axial face ends (57) to a circumferential region of the stator (16), defining a flow cross section of the flow course through the stator (16) and the housing (13). The flow course is defined toward the stator by outer stator teeth (62) located on the outer circumference of the stator (16).

Abstract: A heat sink, in particular for a rectifier unit of an electrical machine has at least one diode opening, and disposed around the at least one diode opening at least partially ring-shaped cooling air openings and at least one mass-increasing raised area, wherein the mass-increasing raised area extends between two of the cooling air openings associated with the diode opening.

Abstract: The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annular closing member (10) located between adjacent magnet poles (21, 23). The magnet wheel halves (21, 23) can be inserted into pockets (11) of the closing member (10) along with the magnet poles (22, 24) thereof such that the closing member (10) overlaps the magnet poles (22, 24) on the edge in at least some areas. Also disclosed is a closing member (10).

Abstract: The present invention relates to a fan wheel (11) for electrical machines, in particular for alternators of motor vehicles, with a fan disk (10) that, on its axially outwardly directed end face, has a number of fan blades (13, 18) distributed around the circumference in the shape of a circular ring, the fan blades extending away from the fan disk in the axial direction, so that cooling air beneath the fan blades can be drawn in axially and blown radially outwardly between air channels (20, 21) formed between them. One part (18) of each of the fan blades is joined in a fixed manner with the fan disk (10) via only its radially outward end section (18a), so that each inner end section (18b) is swiveled radially increasingly outwardly by a centrifugal force (22) occurring there as rotational speeds increase, to reduce the cooling air stream.

Abstract: An electrical machine, in particular a rotary current generator for motor vehicles, is proposed which has a housing (13) in which a stator (16) is retained, such that a coolant can flow around the outside of the stator (16) from one of its axial face ends (57) to a circumferential region of the stator (16), defining a flow cross section of the flow course through the stator (16) and the housing (13). The flow course is defined toward the stator by outer stator teeth (62) located on the outer circumference of the stator (16).

Abstract: In a radial fan wheel for supplying cooling air for an electrical machine, with a number of fan blades (16) attached along the circumference of the fan wheel (10) that have arc-shaped blade ends (18), which, at their radially inner edge, enclose a first angle (?1) with a tangent (20) to the inner circumference (20) of the fan wheel (10) and at their radially outer edge, enclose a second angle (?2) with a tangent (22) to the outer circumference (24) of the fan wheel (10), the invention proposes that the second angle (?2) be selected to be 75% or more greater than the first angle (?1) in order to minimize the turbulence noise in the vicinity of the fan blades (16) during operation of the fan wheel (10).

Abstract: In a radial fan wheel for supplying cooling air for an electrical machine, with a number of fan blades (16) attached along the circumference of the fan wheel (10) that have arc-shaped blade ends (18), which, at their radially inner edge, enclose a first angle (?1) with a tangent (20) to the inner circumference (20) of the fan wheel (10) and at their radially outer edge, enclose a second angle (?2) with a tangent (22) to the outer circumference (24) of the fan wheel (10), the invention proposes that the second angle (?2) be selected to be 75% or more greater than the first angle (?1) in order to minimize the turbulence noise in the vicinity of the fan blades (16) during operation of the fan wheel (10).

Abstract: The invention relates to a fan apparatus for an electrical machine, with a fan (10), which can be rotated around an axis, wherein air flows into the fan (10) in the axial direction and out of the fan (10) in the radial direction, a bearing plate (12), and a magnet wheel (14), wherein a flow conduit (16) is at least partially bounded by the bearing plate (12) and the magnet wheel (14) and the flow cross section of the flow conduit (16) is essentially constant in the radial direction.

Abstract: The invention proposes a heat sink, in particular for a rectifier unit (50) of an electrical machine, having at least one diode boundary surface, this heat sink having at least one diode boundary surface and having at least two cooling air openings (26) and at least one raised area (38) disposed around the at least one diode boundary surface, wherein a radius-dependent circumference section (M) of the heat sink (20) around a diode boundary surface deviates from a radius-dependent normal section (AN) by maximally ?52%.

Abstract: The present invention relates to a fan wheel (11) for electrical machines, in particular for alternators of motor vehicles, with a fan disk (10) that, on its axially outwardly directed end face, has a number of fan blades (13, 18) distributed around the circumference in the shape of a circular ring, the fan blades extending away from the fan disk in the axial direction, so that cooling air beneath the fan blades can be drawn in axially and blown radially outwardly between air channels (20, 21) formed between them. One part (18) of each of the fan blades is joined in a fixed manner with the fan disk (10) via only its radially outward end section (18a), so that each inner end section (18b) is swiveled radially increasingly outwardly by a centrifugal force (22) occurring there as rotational speeds increase, to reduce the cooling air stream.

Abstract: The invention relates to an electrical machine, preferably a rotary-current generator (10) for motor vehicles, having a rectifier unit (11) on a bearing plate (23) of the machine, in which bearing plate a rotating fan (28) is disposed; the rectifier unit is secured in heat-conducting fashion to a heat-conducting annular portion (23a) of the bearing plate (23), and the annular portion surrounds a region (23b) of the bearing plate (23) that is provided with openings (27) through which the cooling air aspirated by the fan (28) flows. The negative and positive diodes of each diode bridge of the rectifier unit are disposed, with an input-side connection part inserted between them, between a common positive and negative connection plate (15, 17) and with them forms the rectifier unit.

Abstract: The invention relates to an electrical machine, preferably an alternator (10) for motor vehicles, comprising a rectifier assembly (11a) that is fixed to an end shield (23) of the machine. Said rectifier assembly is cooled by a fan (27) that operates in the end shield (23), the diodes being positioned on a negative connecting plate (15) and a positive connecting plate (17) of the rectifier assembly (11). The aim of the invention is to evacuate the dissipated heat from the rectifier assembly (11a) in an advantageous manner. To achieve this, the rectifier assembly is located in an opening in the front face (32) of the end shield (23) and is connected in an electrically and thermally conductive manner by one of its two connecting plates (15 and 17) to a cooling body (33), which is connected to the exterior of the end shield (23) and covers the opening (32).

Abstract: The invention relates to an electrical machine, preferably an alternator (10) for motor vehicles, comprising a rectifier assembly (11a) that is fixed to an end shield (23) of the machine. Said rectifier assembly is cooled by a fan (27) that operates in the end shield (23), the diodes being positioned on a negative connecting plate (15) and a positive connecting plate (17) of the rectifier assembly (11). The aim of the invention is to evacuate the dissipated heat from the rectifier assembly (11a) in an advantageous manner. To achieve this, the rectifier assembly is located in an opening in the front face (32) of the end shield (23) and is connected in an electrically and thermally conductive manner by one of its two connecting plates (15 and 17) to a cooling body (33), which is connected to the exterior of the end shield (23) and covers the opening (32).