The V2G technology (From the car to the network) of two-way exchanges allows electric vehicles to re-introduce part of the electricity from their batteries thanks to bidirectional charger. Thus, this technology makes it possible to optimize the operation of the local electricity grid, using electric vehicles as a source of energy during periods of stress, during which the demand on the grid is too high.

Renault joins the circle of builders working on it technologies of the futurelike Hyundai, and in partnership with CEA (Atomic Energy Commission) to develop technologies that will be equipped with future electric vehicles of the French group.

Renault: bidirectional charger developed in collaboration with CEA

CEA and the Renault group jointly developed a new electronic architecture power converter built directly into the car charger. This work required almost 3 years of researchand was the subject 11 patents have been filed.

Designed with innovative materials, this more compact energy converter will allow reduce energy loss by 30%but also improve cooldown time electric vehicle, while extending the life of the battery. It will also be bi-directional to store energy coming from the electrical grid and regenerate it in it if necessary.

Renault and CEA: technology concentration

This one is new bidirectional on-board charger equipped with innovative materials such as gallium nitride (GaN) or silicon carbide (SiC), the so-called “Grand Gap” semiconductors, which reduce energy loss by 30% and therefore heating.

Engineers also optimized the semiconductors, capacitors and wire inductive components to reduce the bulk and cost of the bidirectional charger. This is made more compact by the use of ferrite materials as well as an innovative power injection molding process.

Bi-directional charger: more performance

This new bi-directional charger provides a charging capacity of up to 22 kW three-phasewhich allows you to charge the car faster while optimizing battery life.

The bidirectional charger also makes it possible to use the energy stored in the battery to send it back to the electrical network or to supply the electric circuit of an autonomous house equipped with a bidirectional meter.

This unique French innovation is compatible with electromagnetic compatibility standards for networks and cars. It should be found on cars of the Renault group by the end of the decade.