Fuel cell having bipolar plates with multi-layered dehomogenized turing-pattern microstructure configuration

Patent metadata

Field	Value
Publication number	US-12424639-B2
Application number	US-202017085413-A
Country	US
Kind code	B2
Filing date	Oct 30, 2020
Priority date	Oct 30, 2020
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A fuel cell that includes an air fuel cell bipolar plate and a hydrogen fuel cell bipolar plate respectively having a Turing-pattern microstructure configuration. The spatial arrangement of the air fuel cell bipolar plate and the hydrogen fuel cell bipolar plate is such that the air layer of the air fuel cell bipolar plate and the hydrogen layer of the hydrogen fuel cell bipolar plate are opposed to each other to define a microstructure configuration for a coolant layer.

First claim

What is claimed is:

1. A fuel cell, comprising:
a membrane electrode assembly;
a first fuel cell bipolar plate, having a first dehomogenized Turing-pattern microstructure configuration that facilitates flow of a first fluid along, through, and contacting the first dehomogenized Turing-pattern microstructure configuration; and
a second fuel cell bipolar plate, having a second dehomogenized Turing-pattern microstructure configuration that facilitates flow of a second fluid along, through, and contacting the second dehomogenized Turing-pattern microstructure configuration,
wherein the first fuel cell bipolar plate and the second fuel cell bipolar plate are spatially arranged in a stacked formation such that the first dehomogenized Turing-pattern microstructure configuration and the second dehomogenized Turing-pattern microstructure configuration are opposed to define a third dehomogenized Turing-pattern microstructure configuration that includes at least one channel that facilitates flow of a third fluid along, through, and directly contacting the third dehomogenized Turing-pattern microstructure configuration so as to directly contact the first fuel cell bipolar plate and the second fuel cell bipolar plate plate,
wherein one of the first fuel cell bipolar plate and the second fuel cell bipolar plate comprises an anode,
wherein the other of the first fuel cell bipolar plate and the second fuel cell bipolar plate comprises a cathode, and
wherein the first Turing-pattern microstructure configuration comprises a plurality of large air channels extending from an air inlet of the air fuel cell bipolar plate for fluidic connection to a plurality of smaller air channels in a dendritic arrangement, and the plurality of large air channels extend toward a middle region of the air fuel cell bipolar plate, and transition into the plurality of smaller air channels along a diagonal line of the air fuel cell bipolar plate.

2. A fuel cell, comprising:
a membrane electrode assembly;
a first fuel cell bipolar plate, having a first dehomogenized Turing-pattern microstructure configuration that facilitates flow of a first fluid along, through, and contacting the first dehomogenized Turing-pattern microstructure configuration; and
a second fuel cell bipolar plate, having a second dehomogenized Turing-pattern microstructure configuration that facilitates flow of a second fluid along, through, and contacting the second dehomogenized Turing-pattern microstructure configuration,
wherein the first fuel cell bipolar plate and the second fuel cell bipolar plate are spatially arranged in a stacked formation such that the first dehomogenized Turing-pattern microstructure configuration and the second dehomogenized Turing-pattern microstructure configuration are opposed to define a third dehomogenized Turing-pattern microstructure configuration that includes at least one channel that facilitates flow of a third fluid along, through, and directly contacting the third dehomogenized Turing-pattern microstructure configuration so as to directly contact the first fuel cell bipolar plate and the second fuel cell bipolar plate,
wherein the second fuel cell bipolar plate comprises a hydrogen fuel cell bipolar plate. and the second fluid comprises hydrogen gas, and
wherein: the second Turing-pattern microstructure configuration comprises a plurality of large hydrogen channels extending along side edges of the hydrogen fuel cell bipolar plate for fluidic connection to a plurality of smaller hydrogen channels in a dendritic arrangement, and the plurality of large hydrogen channels branch along the side edges of the hydrogen fuel cell bipolar plate such that the plurality of smaller hydrogen channels extend across to the plurality of large hydrogen channels that are adjacent to the side edges of the hydrogen fuel cell bipolar plate at the hydrogen outlet.

3. A fuel cell, comprising:
a membrane electrode assembly:
a first fuel cell bipolar plate, having a first dehomogenized Turing-pattern microstructure configuration that facilitates flow of a first fluid along, through, and contacting the first dehomogenized Turing-pattern microstructure configuration; and
a second fuel cell bipolar plate, having a second dehomogenized Turing-pattern microstructure configuration that facilitates flow of a second fluid along, through, and contacting the second dehomogenized Turing-pattern microstructure configuration,
wherein the first fuel cell bipolar plate and the second fuel cell bipolar plate are spatially arranged in a stacked formation such that the first dehomogenized Turing-pattern microstructure configuration and the second dehomogenized Turing-pattern microstructure configuration are opposed to define a third dehomogenized Turing-pattern microstructure configuration that includes at least one channel that facilitates flow of a third fluid along, through, and directly contacting the third dehomogenized Turing-pattern microstructure configuration so as to directly contact the first fuel cell bipolar plate and the second fuel cell bipolar plate,
wherein the third fluid comprises a coolant, and
wherein the third Turing-pattern microstructure configuration comprises a plurality of large coolant channels extending adjacent to a coolant inlet for fluidic connection to a plurality of smaller coolant channels, and the plurality of smaller coolant channels linearly extend across the air fuel cell bipolar plate and the hydrogen fuel cell bipolar plate to a plurality of large coolant channels extending adjacent to a coolant outlet.

4. A fuel cell, comprising:
a membrane electrode assembly; and
a pair of opposed fuel cell bipolar plates, each fuel cell bipolar plate having a dehomogenized Turing-pattern microstructure configuration that facilitates flow of fluid along, through, and contacting the dehomogenized Turing-pattern microstructure configuration,
wherein the fuel cell bipolar plates are spatially arranged in a stacked formation such that the dehomogenized Turing-pattern microstructure configurations are opposed to define a third dehomogenized Turing-pattern microstructure configuration that includes at least one fluid channel that facilitates flow of a third fluid along, through, and directly contacting the third dehomogenized Turing-pattern microstructure configuration so as to directly contact the each of the pair of opposed fuel cell bipolar plates,
wherein one of the fuel cell bipolar plates comprises an anode,
wherein the other of the fuel cell bipolar plates comprises a cathode, and
wherein the air fuel cell bipolar plate has a Turing-pattern microstructure configuration that facilitates the flow of air therethrough as a fuel reactant, the Turing-pattern microstructure configuration comprising a plurality of large air channels extending from an air inlet of the air fuel cell bipolar plate for fluidic connection to a plurality of smaller air channels in a dendritic arrangement.

5. The fuel cell of claim 4 , wherein the plurality of large air channels extend toward a middle region of the air fuel cell bipolar plate, and transition into the plurality of smaller air channels along a diagonal line of the air fuel cell bipolar plate.

6. The fuel cell of claim 4 , wherein the third Turing-pattern microstructure configuration facilitates the flow of a coolant therethrough for thermal management of the fuel cell, the third Turing-pattern microstructure configuration comprising a plurality of large coolant channels extending adjacent to a coolant inlet for fluidic connection to a plurality of smaller coolant channels.

7. The fuel cell of claim 6 , wherein the plurality of smaller coolant channels linearly extend across the air fuel cell bipolar plate and the hydrogen fuel cell bipolar plate to a plurality of large coolant

Assignees

• Toyota Eng & Mfg North America

Inventors

• Zhou Yuqing
• Dede Ercan M
• Nomura Tsuyoshi

Classifications

• H01M8/0258 Primary

  characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M8/0223

  Composites · CPC title

• H01M8/0265

  the reactant or coolant channels having varying cross sections · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title