BorgWarner secures an order from a global EV OEM for its integrated drive module

BorgWarner has won an order for its integrated drive module (iDM) from an unnambed “global OEM.” Production is scheduled to begin in 2027.

BorgWarner’s iDM packages the electric motor, gearbox and inverter as a single unit in “what BorgWarner calls “a three-in-one coaxial layout.” In a coaxial e-drive the motor typically sits on the same axis as the output shafts, rather than on an offset, parallel axis. BorgWarner says the gearbox layout improves packaging flexibility in the vehicle.

The motor is oil-cooled. Oil is dielectric, so unlike water-glycol it can be run in direct contact with windings and end-turns instead of through a jacket outside the stator.

Power conversion is handled by the company’s GenIV inverter, which is built into the drive unit. The inverter uses the latest generation of BorgWarner’s Viper power switch, designated Viper D, which the company says cuts switching losses and carries more current, raising the efficiency of the whole drive system. Switching losses turn into heat inside the inverter, so reducing them lowers the cooling burden and leaves more battery energy available at the wheels. BorgWarner has used Viper switches in 800 V silicon carbide inverters for other OEM programs, including an extension of PHEV and BEV inverter contracts with a European automaker.

The module’s hardware and software are organized as building blocks, an approach the company says makes the platform adaptable to different customer requirements and shortens development cycles.

Source: BorgWarner