Test cell of an apparatus for characterising a cell of a fuel cell and method for producing such a test cell

Patent metadata

Field	Value
Publication number	US-10629929-B2
Application number	US-201615557919-A
Country	US
Kind code	B2
Filing date	Mar 16, 2016
Priority date	Mar 18, 2015
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A test cell configured to qualify an apparatus for characterizing cells of at least one fuel cell and a method for producing such a test cell. The test cell includes a first and a second contact face respectively including a first and a second contact area entirely or partially occupying a surface of the corresponding contact face, the first and second contact faces together delimiting an interior volume. The test cell further includes an equivalent passive circuit configured to have an equivalent impedance to at least one cell of a fuel cell, the equivalent circuit including a first and a second output terminal respectively connected to the first and second contact areas, the equivalent circuit being housed in the interior volume.

First claim

The invention claimed is:

1. A test cell for qualifying an apparatus, the apparatus being an apparatus for electrically characterizing cells of at least one fuel cell, the test cell comprising:
a first contact face and a second contact face, the first contact face including a first metal layer occupying all or part of an area of the first contact face and forming a first contact zone, the second contact face including a second metal layer occupying all or part of an area of the second contact face and forming a second contact zone, the first contact face and the second contact faces delimiting together an internal volume between them;
a passive equivalent circuit configured to exhibit an impedance equivalent to at least one cell of a fuel cell element, the passive equivalent circuit including a first output terminal and a second output terminal, the first output terminal being connected to the first contact zone, the second output terminal being connected to the second contact zone, the passive equivalent circuit being housed in the internal volume.

2. The test cell according to claim 1 , wherein a rest of the internal volume is filled with one of a curable resin, an epoxide resin, an unsaturated polyester, or an epoxy acrylate.

3. The test cell according to claim 1 , wherein the passive equivalent circuit includes at least the following components in series:
a first inductance,
a first resistance,
one or more assemblies, each assembly comprising a corresponding capacitance and a corresponding resistance, the corresponding capacitance and the corresponding resistance of each assembly being connected in parallel.

4. The test cell according to claim 3 , wherein the inductance value of the first inductance is between 0 and 10 mH, the value of each of the first resistance and of the corresponding resistance of each assembly is between 0 and 1 Ohm and the value of the corresponding capacitance of each assembly is between 10 μF and 1 F.

5. The test cell according to claim 1 , wherein the passive equivalent circuit includes components of surface-mounted component type.

6. The test cell according to claim 1 , wherein, a metal of the first metal layer and/or of the second metal layer being selected from gold or platinum.

7. The test cell according to claim 1 , wherein the first contact zone occupies an entire area of the first contact face, and
wherein the second contact zone occupies an entire area of the second contact face.

8. The test cell according to claim 1 , wherein the passive equivalent circuit is configured to exhibit an impedance equivalent to plural cells of a fuel cell connected in series and forming a test fuel cell.

9. A method for manufacturing a test cell for qualifying an apparatus, the apparatus being for characterizing cells of at least one fuel cell, the test cell comprising:
providing a passive equivalent circuit configured to exhibit an impedance equivalent to at least one cell of a fuel cell, the passive equivalent circuit including a first and a second output terminal;
providing a first contact face and a second contact face, the first contact face including a first metal layer occupying all or part of an area of the first contact face and forming a first contact zone, the second contact face including a second metal layer occupying all or part of an area of the second contact face and forming a second contact zone;
arranging the first contact face and the second contact face to delimit an internal volume between them in which the passive equivalent circuit is housed with the first output terminal connected to the first contact zone and the second output terminal connected to the second contact zone.

10. The manufacturing method according to claim 9 , wherein the providing the first contact face and the second contact faces includes:
encapsulating the passive equivalent circuit in a curable resin block and curing the curable resin block to form a resin block, wherein the first output terminal is projecting from the resin block on a first face of the resin block, and wherein the second output terminal is projecting from the resin block on a second face of the resin block.

11. The manufacturing method according to claim 10 , wherein a resin of the curable resin block is selected from an epoxide resin, an unsaturated polyester, or an epoxy acrylate.

12. The manufacturing method according to claim 10 , wherein the providing the first contact face and the second contact face further includes:
polishing the first face of the resin block and the second face of the resin block;
depositing the first metal layer on the first face of the of the resin block and the second metal layer on the second face of the resin block to form the first contact zone and the second contact zone.

13. A test cell for qualifying an apparatus, the apparatus being an apparatus for electrically characterizing cells of at least one fuel cell, the test cell comprising:
a first contact face and a second contact face, the first contact face including a first metal layer occupying all or part of an area of the first contact face and forming a first contact zone, the second contact face including a second metal layer occupying all or part of an area of the second contact face and forming a second contact zone, the first contact face and the second contact faces delimiting together an internal volume between them;
a passive equivalent circuit configured to exhibit an impedance equivalent to at least one cell of a fuel cell element, the passive equivalent circuit including a first output terminal and a second output terminal, the first output terminal being connected to the first contact zone, the second output terminal being connected to the second contact zone, the passive equivalent circuit being housed in the internal volume,
wherein the first contact zone occupies an entire area of the first contact face, and
wherein the second contact zone occupies an entire area of the second contact face.

Assignees

• Commissariat Energie Atomique

Inventors

• Vulliet Julien

Classifications

• G01R31/389

  Measuring internal impedance, internal conductance or related variables · CPC title

• H01M8/04656

  of auxiliary devices, e.g. batteries, capacitors · CPC title

• H01M8/04298

  Processes for controlling fuel cells or fuel cell systems · CPC title

• H01M8/04305 Primary

  Modeling, demonstration models of fuel cells, e.g. for training purposes · CPC title

• Y02E60/50

  Fuel cells · CPC title