Renault: The new models with V2G technology
Renault is increasingly working on V2G (vehicle-to-grid) technology by adopting a two-way power transfer technology that will soon allow Renault vehicles to transfer some of the electricity stored in their battery.
CEA (French Atomic Energy and Alternative Energy Commission), which is a major player in the field of research, and the Renault Group, a pioneer and expert in electric vehicles, are already working on this technology, evolving future generations of V2G technologies, which will be adopted by the end of this decade.
Thus, after three years of continuous research and 11 joint patents, which consists of innovative materials and has compact dimensions, they allow the reduction by 30% of energy losses, the improvement of the charging time of the vehicle, but also the longevity of the battery.
The important thing is that this is a two-way charger, which has the ability to store energy from the electrical network.
Great progress has been made in the field of materials that make up wide band-gap semiconductors, such as Gallium Nitride (GaN) or Silicon Carbide (SiC). The result is a 30% reduction in energy losses during conversion, a reduction in heat by the same percentage, and a facilitation of cooling of the conversion system.
In addition, the effort to optimize the active (semiconductor) and passive (capacitors and inductive winding elements) components, allowed to reduce the volume and cost of the charger.
The new design architecture of the power converter offers the possibility of charging up to 22 kW in three-phase mode, allowing for faster charging of the car and ensuring battery longevity. It also allows the charger to be two-way, so that the energy stored in the battery can be replenished into the grid or used to meet the energy needs of an autonomous home, provided that the house is equipped with such equipment.