E-MOBILITY


BorgWarner’s integrated drive module (iDM) combines power electronics, electric motor and mechanical components within one single eAxle unit


INTEGRATED DRIVE INNOVATION


Explore the conceptualisation and development of next-gen drive modules, pushing technological advancement to new heights


T


he next-generation drive module responds to market demands for ultra-compact systems aimed at reducing


costs and off ering higher eff iciency than traditional systems. The fully integrated high-speed drive module is equipped with a high-speed diff erential gearbox at the rotor shaft of the electric motor, as well as two gearboxes for low torques. By integrating a diff erential unit with


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lower torque capacity, the required space compared to similar concepts has been signifi cantly reduced. Due to system requirements, the


electric motor has been completely redesigned compared to currently produced motors. Taking these requirements into account, new rotor properties have been developed, allowing speeds of over 20,000rpm. Despite further reduction in rotor losses, such a concept requires


additional optimisation of motor cooling. The solution involves complete immersion cooling of the stator winding heads in circulating oil fl ow.


E-MOTORS: HIGH- VOLTAGE HAIRPIN TECHNOLOGY Hairpin technology for electric motors has achieved a power density and maximum eff iciency of over


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