Renault Z.E. Concept

Renault Z.E. Concept - An all-electric concept car powered by a 70kW electric motor with torque of 226Nm, with lithium-ion batteries

Based on the brand new Renault Kangoo be bop, the Z.E. Concept features a fun design which has been adapted to the spirit of an electric vehicle, with the focus on minimising energy consumption.

The Z.E. Concept's compact dimensions (length: 3.95m, height: 1.85m) favour manoeuvrability in and about town. The design of this electric vehicle ensures that it is fun to ride in, but at the same time minimises energy consumption, without forgetting modern comfort-related refinements.

The use of heat-reflective paint and insulating bodywork featuring large surface areas contributes to the reduction of temperature fluctuations. Traditionally this prompts the use of climate control or heating systems which are big consumers of energy. Insulation is further optimised by the use of acid green-tinted glass for the glazed areas.

The bodywork functions along the same lines as a Thermos flask. It comprises two insulating panels with a sandwich of air. This air, which is still the most effective insulator known today, limits variations in temperature between the exterior and the interior of the car.

Solar panels, positioned on the roof, power a temperature regulation system. Cooling the inside of a vehicle uses a great deal of energy, but this system permits a pleasant temperature to be maintained in the cabin, even at standstill or when parking, and avoids having to switch on the climate control when starting the vehicle.

Meanwhile, the layout of the heating and climate control functions has been thought through to produce a particularly efficient balance between performance and energy consumption. For example, the impression of heat is especially felt on the face and hands. Accordingly, if the cabin temperature is 15°C but warmth can be channelled as close as possible to key zones (a heated steering wheel, for example), the driver will feel comfortable while using less electrical energy.

The conventional drag-producing exterior mirrors have been replaced by streamlined, low-energy cameras which are also powered by the roof-mounted solar panels to enhance all-round visibility, especially when manoeuvring. The low-drag full-disc aluminium alloy wheels also improve aerodynamic performance.

The headlamps use efficient, high-performance light-emitting diodes (LEDs) which are not only long lasting but also low consumers of energy.

Optimising energy management is consequently a key aspect of the research that has gone into the technology employed for this concept car.

The Z.E. Concept illustrates Renault's vision of mobility in the future. As a socially responsible vehicle, it is equipped with polyurethane gel bumpers, for example. These deform easily to soak up minor knocks, while pedestrians are reassured by their absorbent aspect.

A linear display on the outside of the door provides a visual indication of how much range remains even before the driver gets into the vehicle. This display is reminiscent of a mobile phone charge-indicator.

As a vehicle of the future, the Z.E. Concept is seen as a simple link in the overall mobility chain. To facilitate getting around in areas where space is a premium, an electric scooter is packed into the boot and is charged via the car's own system. To make loading easier, the rear hatch-type tailgate combines with a wide, folding sill which enables this scooter – or any other item – to be slid into the boot.

The Z.E. Concept is equipped with a 70kW (95hp) electric motor which delivers torque of 226Nm, making it particularly flexible, responsive and comfortable to use. Batteries are lithium-ion type.

The Z.E. Concept provides a preview of the Renault electric vehicle which will be easy to use, practical and efficient.