Fuel cell component with embedded power connector

Patent metadata

Field	Value
Publication number	US-10038201-B2
Application number	US-201213495353-A
Country	US
Kind code	B2
Filing date	Jun 13, 2012
Priority date	Jun 13, 2012
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

An exemplary fuel cell component includes a plate comprising an electrically conductive material. An electrical connector includes a first portion embedded in the plate. A second portion of the electrical connector extends from the plate. The second portion is configured to make an electrically conductive connection with another device.

First claim

We claim:

1. A fuel cell assembly, comprising:
a cell stack assembly including a plurality of fuel cells stacked in a longitudinal direction; and
a fuel cell component including:
an end cell plate arranged at an end of the cell stack assembly, the end cell plate including an electrically conductive material disposed therein, the electrically conductive material comprising at least one of carbon and graphite; and
an electrical connector including:
a first portion including one or more exterior surfaces which define an outer periphery of the electrical connector, the outer periphery completely extending around the first portion, the outer periphery of the first portion being fully surrounded by the electrically conductive material of the end cell plate;
a second portion extending from the end cell plate, the second portion being configured to make an electrically conductive connection with another device; and
a plurality of flexible wire strands with spacing between at least some of the wire strands, wherein some of the electrically conductive material of the end cell plate is received in the spacing.

2. The fuel cell assembly of claim 1 , wherein the end cell plate is configured as a current collector for the end of the cell stack assembly.

3. The fuel cell assembly of claim 1 , wherein the plurality of flexible wire strands of the electrical connector are provided in the form of a braided cable.

4. The fuel cell assembly of claim 1 , wherein
the electrical connector has a length, a width and a thickness;
the thickness and the width are generally perpendicular to the length; and
the width is greater than the thickness.

5. A fuel cell device, comprising
a cell stack assembly including a plurality of fuel cells stacked in a longitudinal direction;
an end cell plate at one end of the cell stack assembly, the end cell plate including an electrically conductive material disposed therein, the electrically conductive material comprising at least one of carbon and graphite; and
an electrical connector including:
a first portion having including exterior surfaces which define an outer periphery of the electrical connector, the outer periphery completely extending around the first portion, and the outer periphery of the first portion being fully surrounded by the electrically conductive material of the end cell plate;
a second portion extending from the end cell plate, the second portion being configured to make an electrically conductive connection with another device; and
a plurality of flexible wire strands with spacing between at least some of the wire strands, wherein some of the electrically conductive material of the end cell plate is received in the spacing.

6. The device of claim 5 , wherein the end cell plate is configured as a current collector at the end of the cell stack assembly.

7. The device of claim 5 , wherein the plurality of flexible wire strands of the electrical connector are provided in the form of a braided cable.

8. The device of claim 5 , wherein
the electrical connector has a length, a width and a thickness;
the thickness and the width are generally perpendicular to the length; and
the width is greater than the thickness.

9. A method of making a fuel cell component, comprising:
forming an end cell plate that is sized and shaped to be arranged at an end of a cell stack assembly of a fuel cell assembly, the cell stack assembly including a plurality of fuel cells stacked in a longitudinal direction, the end cell plate comprising an electrically conductive material disposed therein, and the electrically conductive material comprising at least one of carbon and graphite;
embedding a first portion of an electrically conductive connector in the end cell plate with a second portion of the connector extending from the end cell plate, the embedding including fully surrounding exterior surfaces of the first portion with the electrically conductive material of the end cell plate, the exterior surfaces defining an outer periphery of the electrical connector which outer periphery completely extends around the first portion; and
introducing some of the electrically conductive material of the end cell plate into spacing between at least some of a plurality of flexible wire strands of the electrically conductive connector.

10. The method of claim 9 , further comprising:
introducing a powder including the electrically conductive material into a mold;
situating the first portion of the connector in the mold; and
applying heat and pressure to the powder in the mold while the first portion is in the mold.

Assignees

• Ferreira David Melo
• Carnevale Christopher John
• Allen Glenn Michael
• Audi Ag

Inventors

• Ferreira David Melo
• Carnevale Christopher John
• Allen Glenn Michael

Classifications

• H01M8/2465 Primary

  Details of groupings of fuel cells · CPC title

• H01M8/249

  comprising two or more groupings of fuel cells, e.g. modular assemblies · CPC title

• H01M8/0204 Primary

  Non-porous and characterised by the material · CPC title

• Y02E60/50

  Fuel cells · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title