Commissariat a L'energie Atomique Et Aux Energies Alternatives

Centre National De La Recherche Scientifique

Institut National Des Sciences Appliquees De Lyon

Ecole Centrale De Lyon

Institut Français Des Sciences Et Technologies Des Transports Réseaux

Université Lyon 1 Claude Bernard

Université Grenoble Alpes

Institut Polytechnique De Grenoble

Centre National De La Recherche Scientifique-Cnrs

Institut Francais Des Sciences Et Technologies Des Transports, De L'amenagement Et Des Reseaux

Mathias Gerard

Remi Vincent

Christophe Robin

Lara Jabbour

Jean-Philippe Poirot-Crouvezier

Fabrice Micoud

Eric Bideaux

Ramon Naiff Da Fonseca

Fredy-Intelligent Nandjou Dongmeza

Daniel Chatroux

Patrick Le Gallo

Matthieu Desbois-Renaudin

Vincent Heiries

Rémi Vincent

Laurent Garnier

Bruno Beranger

Frédéric Suard

Pascal Schott

Ludovic Rouillon

Jean-Noel Carminati

Maxime Piffard

Guillaume Serre

Paolo Massioni

Anthony Barre

Ramon Da Fonseca

Bruno Jeanneret

Sébastien Rosini

Mathilde Grandjacques

Christophe Berenguer

Catherine Cadet

Gauthier Jullian

A flying device includes a mechanical coupling that is designed to cooperate with a cable of an electrical distribution line in such a way that the flying device remains secured to the cable in a rest position.

Flying device

The invention relates to a method for determining the dimensions of an electrochemical cell allowing a total area of the electrochemical cell to be minimized while maximizing an electrical signal generated by the electrochemical cell in operation, including: a/ determining a first cost function expressing the variation in a first parameter representative of the total area as a function of an adjustment variable representative of an aspect ratio of the active zone; b/ determining a second cost function expressing the variation in a second parameter representative of the generated electrical signal as a function of the adjustment variable; c/ determining a compound cost function from the first and second cost functions and identifying a value of the adjustment variable that optimizes the compound cost function and that therefore conjointly optimizes the first and second cost functions.

Method for determining the dimensions of an electrochemical cell comprising PCB holding plates

A method is provided for determining a spatial distribution (R) of a parameter of interest (R) representative of the electrical power production of an electrochemical cell, including steps of determining the spatial distribution (R) the parameter of interest (R) depending on a spatial distribution (Q) of a second thermal quantity (Q) estimated beforehand from a spatial distribution (T) of a set-point temperature (T) and from a spatial distribution (D) of a first thermal quantity (D).

Determination of a spatial distribution of an electrical production parameter of an electrochemical cell

A method for producing an electrochemical cell is provided, the method including determining a spatial distribution (k) of a parameter of interest (k) representative of a permeability of a diffusion layer of at least one electrode of a reference electrochemical cell in operation, the determining being performed by defining a spatial distribution (T) of a set-point temperature (T) within the cell in operation, by measuring a spatial distribution (D) of a first thermal quantity (D) representative of local removal of heat, by estimating a spatial distribution (Q) of a second thermal quantity (Q) representative of local production of heat (Q), and by determining the spatial distribution (k) depending on the estimated spatial distribution (Q), and the method further including producing the electrochemical cell based on the reference electrochemical cell and in which the parameter of interest (k) has the determined spatial distribution (k).

Determination of a spatial distribution of the permeability of an electrochemical - cell electrode

A method for observing a state of an electrochemical system including a fuel cell including the following steps: measuring parameters that are representative of the fuel cell in operation; forming a control vector; forming a measurement vector; calculating a temporal variation, referred to as a non-corrected temporal variation; calculating a corrective term in sliding mode; calculating an estimate of the state of the electrochemical system; reiterating above steps while incrementing the measurement time.

Method and device for observing a state of a fuel-cell electrochemical system

A fuel cell, including: first and second electrochemical cells; a two-pole plate arranged between the first and second electrochemical cells, including a conductor support delimiting a first flow channel facing the first electrochemical cell and extending between an air inlet and a water outlet, and including a first conductive coating attached to the conductor support at the air inlet of the first flow channel and including a second conductive coating fastened to the conductor support at the middle part of the first flow channel, the second conductor coating having an electrical surface resistance greater than that of the first conductive coating.

Fuel cell with optimized operation

A method is provided for determining a spatial distribution (Wc) of a parameter of interest (Wc) representative of a catalytic activity of an active layer of at least one electrode among two electrodes of an electrochemical cell, including steps of providing the cell, within which the parameter of interest (Wc) has an initial spatial distribution (Wc) of one or more values of catalytic load; defining a spatial distribution (T) of a set-point temperature (T) within the cell in operation; measuring a spatial distribution (D) of a first thermal quantity (D) within the cell in operation; estimating a spatial distribution (Wc) of a second thermal quantity (Q) within the cell in operation, depending on the spatial distribution (T) and on the measured spatial distribution (D); and determining the spatial distribution (Wc) of the parameter of interest (Wc) depending on the estimated spatial distribution (Q) of the second thermal quantity (Q).

Determination of a spatial distribution of the catalytic activity of an electrochemical-cell electrode

A method for determining a spatial distribution (Rc) of a parameter of interest (Rc) representative of a contact resistance between a bipolar plate and an adjacent electrode of an electrochemical cell, in which a spatial distribution (Rc) of the parameter of interest (Rc) is determined depending on the spatial distribution (Q) of a second thermal quantity (Q) estimated beforehand from the spatial distribution (T) of a set-point temperature (Tc) and from the spatial distribution (D) of a first thermal quantity (D).

Determining of a spatial distribution of the electrical contact resistance of an electrochemical cell

An automotive vehicle drive unit, comprising a fuel cell whose control input is a setpoint of the electrical power to be delivered by the fuel cell. There is a reversible electrical energy storage system and an electric motor to propel the wheels of a vehicle. An electrical connection element selectively connects the fuel cell and/or the energy storage system to the electric motor. A control circuit stores a model of the consumption of dihydrogen as a function of the power delivered by this fuel cell, in the form of a second-degree polynomial and is configured to compute a coefficient of power distribution &#x3bb;between the fuel cell and the electrical energy storage system pursuant to a defined equation. The control circuit controls the electrical connection element to recharge the energy storage system when the value of the power setpoint Pfc* is greater than the power demanded by the electric motor.

Motor vehicle drive unit including a fuel cell and an energy storage system

Growing community of inventors

Grenoble, France

Mathias Gerard