Fuel cell system and method for regulating a fuel cell system

H - Electricity – 01 – M

Patent

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Details

H01M 8/04 (2006.01)

Patent

CA 2680131

The invention relates to a fuel cell system for mobile applications, comprising a fuel cell (1) and a DC/DC transformer (2) that is coupled to the fuel cell (1) and that can be coupled to an energy storage unit (3). According to the invention, the fuel cell system is characterized in that a control and regulation unit (4) is connected to the fuel cell (1) and to the DC/DC transformer (2), and in that the control and regulation unit (4) comprises a performance characteristic regulator (5) which receives a value I FC,actual of a current and receives from the fuel cell (1) the one voltage value U FC,actual as well as a value for at least one additional operating variable of the fuel cell system, said regulator processes the received values I FC,actual, U FC,actual and the value for the operating variable so as to create a control signal, and then relays the control signal to a device (6) for controlling the operating variable. Moreover, the invention relates to an active hybrid system and to a method for regulating the performance characteristics of the fuel cell.

L'invention concerne un système de cellule électrochimique destiné à des applications mobiles, comportant une cellule électrochimique (1) et un convertisseur DC/DC (2) couplé à la cellule électrochimique (1), pouvant être couplé à un accumulateur d'énergie (3). Le système de cellule électrochimique est caractérisé en ce qu'une unité de commande et de régulation (4) est connectée à la cellule électrochimique (1) et au convertisseur DC/DC (2), et en ce que l'unité de commande et de régulation (4) comporte une régulation de champ caractéristique (5) recevant une valeur l<SUB>Bz,ist</SUB>d'un courant, une valeur de tension U<SUB>Bz,ist</SUB> provenant de la cellule électrochimique (1), et une valeur d'au moins une autre grandeur de fonctionnement du système de cellule électrochimique, traitant les valeurs reçues l<SUB>Bz,ist</SUB>, U<SUB>Bz,ist</SUB> et la valeur de la grandeur de fonctionnement, sous forme de signal de commande, et transmettant le signal de commande à un dispositif (6) de commande de la grandeur de fonctionnement. L'invention concerne également un système hybride actif et un procédé de régulation de champ caractéristique de la cellule électrochimique.

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