Patent ID: 11958347
Assignee: FLET GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 9:
10. An electric vehicle with an electric motor wherein the electric motor comprises
a plurality of electric motor modules, comprising
a first electric motor module, comprising a first rotor which has a first rotor shaft, wherein the first rotor shaft has a first shaft coupling structure, and
at least a second electric motor module, comprising a second rotor which has a second rotor shaft, wherein the second rotor shaft has a second shaft coupling structure, and

a rotational bearing by which the first rotor shaft is mounted,
wherein the first rotor shaft and the second rotor shaft are positively coupled with one another via the first and second shaft coupling structures, and, a stator,
wherein at least one of the first rotor shaft and the second rotor shaft comprises
a central cooling duct that extends in an axial direction,
a feed branch duct that extends radially outwards and is connected to the central cooling duct, and
a discharge branch duct that extends outwards and is connected to the central cooling duct, and

wherein the stator comprises
a cooling fluid feed for supplying cooling fluid to the feed branch duct, and
a cooling fluid discharge for discharging cooling fluid from the discharge branch duct.