Energy recovery method and system on a vehicle equipped with...

B - Operations – Transporting – 60 – H

Patent

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Details

B60H 1/00 (2006.01) B60L 11/18 (2006.01) H01M 8/04 (2006.01) H01M 8/06 (2006.01)

Patent

CA 2499860

The invention relates to a method and device for recovering the electrical energy in a motor vehicle driven by at least one electric motor (10). The invention is of the type which comprises a fuel cell (14) for powering the electric motor (10), which is supplied with fuel by means of reformer (42), the fuel flow being controlled according to the power consumption (P mot) of the electric motor (10), and which temporarily produces an excess of fuel when the consumption (P mot) of the electric motor (10) falls. Moreover, the invention is also of the type which comprises energy storage means (16, 76, 78, 80). The inventive method is characterised in that it comprises the following steps in particular, namely: a step (b) consisting in calculating the excess electric power (P réC) which can be produced by the fuel cell (14) and steps consisting in storing (d) and distributing the excess fuel (e), during which the excess electric power (P réc) is stored in storage means (16, 76, 78, 80).

L'invention concerne un procédé de récupération de l'énergie électrique dans un véhicule automobile mu par au moins un moteur électrique (10), du type qui comporte une pile à combustible (14) qui alimente notamment le moteur électrique (10), et qui est alimentée en carburant par l'intermédiaire d'un reformeur (42) dont le débit de carburant est commandé en fonction de la consommation électrique (Pmot) du moteur électrique (10), et qui produit temporairement un excès de carburant lorsque la consommation (Pmot) du moteur électrique (10) diminue, et du type qui comporte des moyens de stockage d'énergie (16, 76, 78, 80), caractérisé en ce qu'il comporte notamment une étape b) de calcul de la puissance électrique excédentaire (Préc) susceptible d'être produite par la pile à combustible (14) et des étapes de stockage d) et de répartition de l'excès de carburante) au cours desquelles la puissance électrique excédentaire (Préc) est stockée dans les moyens de stockage (16, 76, 78, 80).

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