Renault Claims Production Cost Cut for new BEV Platform
Renault has revealed details of its future generations of BEVs using a new electric specific platform to make its first appearance in the Renault 5 next year.
An extensive program of testing prototype ‘mules’ is currently underway, taking in various types of terrain and grip including in extremely cold conditions, testing the Renault-Nissan-Mitsubishi Alliance’s new CMF-B EV platform: ‘CMF’ for Common Module Family, ‘B’ for B-segment, and ‘EV’ for Electric vehicles. The automaker claims the platform will enjoy production costs 30% less than the current Zoe BEV. This means seamless driving pleasure.
Test mules are based on the Clio silhouette and do not yet look like the future Renault 5 model. Alternating between static and dynamic fine-tuning and endurance testing, the mules are being put through their paces this winter in ice and snow conditions in Arvidsjaur, Swedish Lapland, as well as average-to-high grip conditions at the Renault technical centers in Lardy, outside Paris, and Aubevoye in Normandy.
Platform
While the new platform uses 70% of the parts featured on the CMF-B platform used for Clio and Captur, Renault says it is easier to make, develop and optimize the performance of next-generation B-segment electric vehicles. The advantages of the new design mean that a new generation of electric vehicles can be created, with adjustable tracks and wheelbase to allow for different body types and styles. The chassis boasts a premium-level multi-link rear axle and a lower center of gravity with batteries installed under the floor.
The electric motor on the future electric Renault 5 will be based on the tried-and-tested electrically excited synchronous motor used primarily on the Zoe and Megane E-Tech electric. However it benefits from a new internal architecture, combining three main components: the DC/DC converter that converts the battery’s 400V into 12V; the battery charger; and the accessory box that manages power distribution. This results in about 44lbs lighter than that used for the Zoe, the future electric Renault 5 engine will be more enjoyable and dynamic to drive than its predecessor.
Its new battery pack sees a switch from the 12 modules seen on the Zoe battery to four large modules making the architecture simpler and 33lbs lighter. Jérémie Coiffier, Renault’s head of engineering BEV Family, said: “Tests being carried out on rolling chassis prototypes will help us confirm decisions made in terms of comfort and handling on the upcoming Renault 5 electric. Without giving anything away, the early test drives are a clear indication that it is a worthy descendant of the Megane E-Tech electric with best-in-class performance for its category; encouraging results that drive us to push ahead with testing through to its commercial launch set for next year.”
— Paul Myles is a seasoned automotive journalist based in Europe. Follow him on Twitter @Paulmyles_
