US 11,938,806 B2
Integrated drive system
Christian Finger-Albert, Bad Kissingen (DE); and Alexander Frank, Bad Kissingen (DE)
Assigned to VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH, Erlangen (DE)
Appl. No. 17/052,381
Filed by Valeo Siemens eAutomotive Germany GmbH, Erlangen (DE)
PCT Filed May 14, 2019, PCT No. PCT/EP2019/062335
§ 371(c)(1), (2) Date Nov. 2, 2020,
PCT Pub. No. WO2019/219676, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 10 2018 111 624.1 (DE), filed on May 15, 2018.
Prior Publication US 2021/0086608 A1, Mar. 25, 2021
Int. Cl. B60K 11/02 (2006.01); H02K 7/116 (2006.01); H02K 9/19 (2006.01); H02K 11/33 (2016.01); B60K 6/26 (2007.10)
CPC B60K 11/02 (2013.01) [H02K 7/116 (2013.01); H02K 9/19 (2013.01); H02K 11/33 (2016.01); B60K 6/26 (2013.01); B60Y 2200/91 (2013.01); B60Y 2200/92 (2013.01); B60Y 2306/05 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An integrated drive system comprising:
an electric motor having a stator and a rotor, an inverter configured to control said electric motor, a gearbox configured to transmit a torque provided by the electric motor, and a coolant system,
wherein the coolant system comprises a cooling fluid, configured to follow one cooling path for cooling the inverter, the rotor, the stator and the gearbox,
wherein the electric motor comprises a casing enclosing the rotor and the stator; said casing having a lateral part in a shape of a cylinder, extending along an electric motor axis to enclose the stator, a first end part at a first axial end of said electric motor forming a B-shield, closing a first axial end of the lateral part; and a second end part at a second axial end of said electric motor opposite to the first axial end of said electric motor, said second end part forming an A-shield closing a second axial end of the lateral part,
wherein the casing of the electric motor comprises an extending portion, which extends from the lateral part of the casing of the electric motor from a position proximal to the B-shield to a position distal from the B-shield, along a direction perpendicular with respect to the axis of the electric motor,
wherein the electric motor includes a rotor shaft to which the rotor is fixedly attached, and said gearbox is configured to transmit a torque from the rotor shaft of the electric motor to an output position at a distance from the electric motor with respect to the axis of the rotor shaft,
wherein said extending portion extends from the lateral part of the casing of the electric motor so as to face an output position of the gearbox and comprises a hole receiving a secondary shaft connected to said output position of the gearbox,
wherein the inverter comprises a casing including components of the inverter, and the casing of the inverter is supported on the casing of the electric motor such that an outer face of the casing of the inverter extends in a plane tangent with respect to an outer surface of the lateral part of the casing of the electric motor, and
wherein said outer face of the casing of the inverter, the lateral part of the casing of the electric motor, the extending portion of the casing of the motor and the gearbox define a volume receiving connecting ducts of the cooling system connecting the inverter, the electric motor and the gearbox.