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    • 4. 发明申请
    • ELECTRICAL MACHINE WITH COOLED BUSBARS
    • US20220271609A1
    • 2022-08-25
    • US17625530
    • 2020-05-29
    • Robert Bosch GmbH
    • Konstantin LindenthalClaus-Christian OettingSebastian HoffmannAndreas HerzbergerThomas BublatUwe Knappenberger
    • H02K5/20H02K3/50H02K5/15H02K9/19
    • The present invention relates to an electrical machine (1) having a rotor (2) and a stator (3) which are at least partially arranged in a machine housing (4), and also having a cooling jacket (5) for cooling the stator (3), a plurality of first cooling ducts (6), which run parallel in relation to one another, in particular in an axial direction with respect to the stator axis, for guiding a cooling medium run through said cooling jacket, wherein the machine housing (4) has at least one end plate (7), which is connected to the cooling jacket (5), for supporting a rotor shaft (8) of the rotor (2), wherein a plurality of second cooling ducts (9) which each connect two, in particular adjacent, first cooling ducts (6) to one another in terms of flow are formed on the end plate (7), wherein the second cooling ducts (9) together with the first cooling ducts (6) produce a coolant path, which is in particular of meandering or serpentine design, through the electrical machine (1), and wherein at least one busbar (10) which is electrically connected to a stator winding (14) of the stator (3) runs on the end plate (7), characterized in that the busbar (10) has a main section (11) and at least one cooling lug (12) which extends from the main section (11), wherein the cooling lug (12) engages into a housing recess (13) of the end plate (7), which housing recess is formed directly adjacent to one of the second cooling ducts (9).
    • 5. 发明申请
    • ROTOR OF AN ELECTRIC MACHINE
    • US20220021256A1
    • 2022-01-20
    • US17297654
    • 2019-10-15
    • Robert Bosch GmbH
    • Daniel KuehbacherFelix BensingJannik StammlerRalph PeterUwe Knappenberger
    • H02K1/32H02K1/27H02K1/28H02K7/04
    • A rotor (1) of an electrical machine is already known, comprising a rotor body (3) which can be rotated about a rotor axis (2) and comprising several cooling ducts (5) which have a cooling duct opening (8.1, 8.2) at each of its ends, wherein one cooling duct opening (8.1) of one of the cooling ducts (5) is arranged radially further outside than the other cooling duct opening (8.2) of the same cooling duct (5). The driving force for generating an airflow through the cooling ducts (5) is generated by a radial offset between a channel of a hollow shaft of the rotor and one of the cooling duct openings of the rotor. In the rotor (1) according to the invention, the driving force for generating the airflow is generated solely in the cooling duct (5) in question of the rotor (1). According to the invention: the first cover element (10) covers the radially innermost partial cross-section of the cooling duct opening (8.1) in question with an edge section which is radially outward with respect to the rotor axis (2) and in each case leaves a radially outermost partial cross-section of the same cooling duct opening (8.1) uncovered as a cooling duct outlet (8.1); the other cooling duct opening (8.2) of the same cooling duct (5) is in each case a cooling duct inlet; an inflow which is axial with respect to the rotor axis (2) is provided in each case upstream of the cooling duct inlets (8.2); and the geometric centre of gravity of the cooling duct outlet (8.1) is in each case offset in the radial direction relative to the rotor axis (2) with respect to the geometric centre of gravity of the cooling duct inlet (8.2) of the same cooling duct (5).
    • 7. 发明授权
    • Rotor of an electric machine
    • US11955846B2
    • 2024-04-09
    • US17297654
    • 2019-10-15
    • Robert Bosch GmbH
    • Daniel KuehbacherFelix BensingJannik StammlerRalph PeterUwe Knappenberger
    • H02K1/32H02K1/276H02K1/278H02K1/28H02K7/04
    • H02K1/32H02K1/276H02K1/278H02K1/28H02K7/04
    • A rotor (1) of an electrical machine is already known, comprising a rotor body (3) which can be rotated about a rotor axis (2) and comprising several cooling ducts (5) which have a cooling duct opening (8.1, 8.2) at each of its ends, wherein one cooling duct opening (8.1) of one of the cooling ducts (5) is arranged radially further outside than the other cooling duct opening (8.2) of the same cooling duct (5). The driving force for generating an airflow through the cooling ducts (5) is generated by a radial offset between a channel of a hollow shaft of the rotor and one of the cooling duct openings of the rotor. In the rotor (1) according to the invention, the driving force for generating the airflow is generated solely in the cooling duct (5) in question of the rotor (1). According to the invention: the first cover element (10) covers the radially innermost partial cross-section of the cooling duct opening (8.1) in question with an edge section which is radially outward with respect to the rotor axis (2) and in each case leaves a radially outermost partial cross-section of the same cooling duct opening (8.1) uncovered as a cooling duct outlet (8.1); the other cooling duct opening (8.2) of the same cooling duct (5) is in each case a cooling duct inlet; an inflow which is axial with respect to the rotor axis (2) is provided in each case upstream of the cooling duct inlets (8.2); and the geometric centre of gravity of the cooling duct outlet (8.1) is in each case offset in the radial direction relative to the rotor axis (2) with respect to the geometric centre of gravity of the cooling duct inlet (8.2) of the same cooling duct (5).