car-engineer english version car-engineer version française

The newly designed Renault electric motor


With this completely new electric motor, Renault reaffirms its electric vehicle strategy and its desire to develop a comprehensive level of expertise in this field.

The objective was first and foremost to work on the integration of components for a more compact motor. Volumes have been reduced by 10 per cent for the same level of performance, which opens up new opportunities to use it for smaller vehicles. The electronic management and charging systems have been refined to optimize charging time at low power and electricity consumption while on the move.

How the new Electric motor works?

  • Designed by Renault’s motor engineers in France,
  • Manufactured in France at Renault’s Cléon plant, which specializes in advanced powerplants,
  • Innovative in its design and architecture: this motor was subjected to 95 specific tests, taking advantage of the electric vehicle experience Renault has acquired.

This is a synchronous electric motor with wound rotor developing 65 kW and peak torque of 220 Nm, complete with an integrated Chameleon charger.

New Renault electric motor

Integration, miniaturization and simplification are the three objectives that guided the designers of this motor:

  • Integration: switching from macro-module stacking to fully integrated modules
  • Miniaturization: the design of smaller modules, assembled closely (minimization of space between the modules, doing away with external power supply cables)

‘Three in one’: the junction box, power electronics and Chameleon charger are all contained within a single system entitled Power Electronic Controller, enabling a 25 percent reduction in the size of this group of functions.

  • Simplification: switch to air cooling for the electric motor (removal of inter-module ducting). Only the Power Electronic Controller continues to be cooled by water, adapted to its specific needs.

Refinement of the charging system at low power

The designers have improved the electronic management of the charging process in order to reduce charging times using low-power infrastructure (flexi-charger cable for domestic networks, 3kW and 11kW electric charging points).

Enhanced efficiency: thanks to the comprehensive redesign of the inverter system, the designers have been able to improve efficiency, thereby reducing the consumption of electric energy.

Source: Renault
Romain’s opinion:
Renault has accumulated a lot of experience in electric motor design through its electric vehicles program. Do you think that Renault will supply its technology to partners or competitors willing to enter the electric vehicle market? Do you think Renault and Nissan will standardize their EV powertrain in a near future?

Leave a Reply