Apparatus and method for assembling a conductor assembly for a proton exchange membrane fuel cell

Patent metadata

Field	Value
Publication number	US-2024421334-A1
Application number	US-202318336224-A
Country	US
Kind code	A1
Filing date	Jun 16, 2023
Priority date	Jun 16, 2023
Publication date	Dec 19, 2024
Grant date	—

Abstract

An apparatus for assembling a conductor assembly for a PEM fuel cell includes an application module for applying first and second stripes of an adhesive onto a rolled-out segment of GDL material, wherein the first and second stripes run along respective first and second longitudinal edges of the GDL material defining an applied segment. A cutting module cuts the applied segment to form one or more cut segments each having a respective primary surface on which respective portions of the stripes are carried. A laminating module laminates a subgasket between two cut segments, wherein the subgasket has a window bounded by a window periphery, and the two cut segments are oriented with their primary surfaces facing and covering the window with their respective portions of the first and second stripes being in contact with the window periphery.

First claim

What is claimed is:

1 . A conductor assembly for a proton exchange membrane fuel cell, comprising:
first and second cut segments of gas diffusion layer (GDL) material, wherein each of the first and second cut segments has a respective first surface, respective opposed first and second longitudinal edges, and respective first, second and third stripes of an adhesive material applied onto the respective first surface along a respective length of the respective first surface, wherein for each of the first and second cut segments the respective first stripe runs along and is proximate to the respective first longitudinal edge, the respective second stripe runs along and is proximate to the respective second longitudinal edge, and the respective third stripe runs between the respective first and second stripes; and a generally planar subgasket having a window therethrough bounded by a window periphery surrounding the window; wherein the generally planar subgasket is sandwiched between the first and second cut segments with the first and second cut segments oriented with their respective first surfaces facing and covering the window and with their respective first and second stripes being disposed in contact with the window periphery.

2 . The conductor assembly of claim 1 , wherein the first and second cut segments are oriented such that the first, second and third stripes of one of the first and second cut segments are registered with the first, second and third stripes of the other of the first and second cut segments.

3 . The conductor assembly of claim 1 , wherein for each of the first and second cut segments the respective first, second and third stripes are parallel with each other.

4 . The conductor assembly of claim 1 , wherein the respective third stripes of the first and second cut segments are adhered to each other.

5 . The conductor assembly of claim 1 , wherein the adhesive material is an ionomer solution.

6 . The conductor assembly of claim 5 , wherein the ionomer solution is a perfluorosulfonic acid polymer.

7 . The conductor assembly of claim 5 , wherein the ionomer solution contains an electrically conductive additive therein.

8 . The conductor assembly of claim 1 , wherein the respective first and second stripes of the first and second cut segments are disposed in contact with less than an entirety of the window periphery.

9 . A conductor assembly for a proton exchange membrane fuel cell, comprising:
first and second cut segments of gas diffusion layer (GDL) material, wherein each of the first and second cut segments has a respective first surface, respective opposed first and second longitudinal edges, and respective first and second stripes of an ionomer solution applied onto the respective first surface along a respective length of the respective first surface, wherein for each of the first and second cut segments the respective first stripe runs along and is proximate to the respective first longitudinal edge and the respective second stripe runs along and is proximate to the respective second longitudinal edge; and a generally planar subgasket having a window therethrough bounded by a window periphery surrounding the window; wherein the generally planar subgasket is sandwiched between the first and second cut segments with the first and second cut segments oriented with their respective first surfaces facing and covering the window and with their respective first and second stripes being disposed in contact with the window periphery.

10 . The conductor assembly of claim 9 , wherein each of the first and second cut segments includes a respective third stripe of the ionomer solution applied onto the respective first surface along the respective length of the respective first surface and running between the respective first and second stripes.

11 . The conductor assembly of claim 10 , wherein the respective third stripes of the first and second cut segments are self-adhered to each other.

12 . The conductor assembly of claim 9 , wherein the first and second cut segments are oriented such that the first and second stripes of one of the first and second cut segments are registered with the first and second stripes of the other of the first and second cut segments.

13 . The conductor assembly of claim 9 , wherein for each of the first and second cut segments the respective first and second stripes are parallel with each other.

14 . The conductor assembly of claim 9 , wherein the ionomer solution is a perfluorosulfonic acid polymer.

15 . The conductor assembly of claim 9 , wherein the ionomer solution contains an electrically conductive additive therein.

16 . The conductor assembly of claim 9 , wherein the respective first and second stripes of the first and second cut segments are disposed in contact with less than an entirety of the window periphery.

17 . The conductor assembly of claim 9 , wherein each of the first and second cut segments includes one or more respective deposits of the ionomer solution on the respective first surface between the respective first and second stripes, wherein the one or more deposits on one of the first and second cut segments are registered with and self-adhered to the one or more deposits on the other of the first and second cut segments.

18 . An apparatus for assembling a conductor assembly for a proton exchange membrane fuel cell, comprising:
an application module configured for applying first, second and third stripes of an adhesive material onto a first surface of a rolled out segment of gas diffusion layer (GDL) material along a length thereof, the rolled out segment having opposed first and second longitudinal edges, wherein the first stripe runs along and is proximate to the first longitudinal edge, the second stripe runs along and is proximate to the second longitudinal edge, and the third stripe runs between the first and second stripes, thereby defining an applied segment; a cutting module configured for cutting the applied segment so as to form one or more cut segments each having a respective primary surface on which respective portions of the first, second and third stripes are carried; and a laminating module configured for laminating a generally planar subgasket between two of the cut segments, wherein the subgasket has a window therethrough bounded by a window periphery surrounding the window, and wherein the two cut segments are oriented with their respective primary surfaces facing and covering the window and with their respective portions of the first and second stripes being disposed in contact with the window periphery.

19 . The apparatus of claim 18 , further comprising:
an unrolling module configured for unrolling a roll of the GDL material to provide the rolled out segment.

20 . The apparatus of claim 19 , wherein the unrolling module and the application module are configured to cooperate with each other such that the unrolling and the applying are continuous and simultaneous with each other.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Kumaraguru Swaminatha P

Classifications

• H01M8/0202

  Collectors; Separators, e.g. bipolar separators; Interconnectors · CPC title

• H01M4/8875

  Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support · CPC title

• H01M4/8807 Primary

  Gas diffusion layers · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M2300/0097

  with adhesive layers · CPC title