Heat treatment apparatus and method of membrane electrode assemblies

Patent metadata

Field	Value
Publication number	US-11569520-B2
Application number	US-201916680729-A
Country	US
Kind code	B2
Filing date	Nov 12, 2019
Priority date	Dec 24, 2018
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A heat treatment apparatus of membrane electrode assemblies includes a base, a first member extending from the base in a first direction, and a plurality of second members formed on the base in a radially outward direction of the first member and having inner surfaces facing the first member, where the first member or the second members includes a heat wire member, and membrane electrode assemblies are disposed between the first member and the second members.

First claim

What is claimed is:

1. A heat treatment method of membrane electrode assemblies, comprising:
preparing a heat treatment apparatus comprising a first member extending from a base in a first direction and a plurality of second members formed on the base in a radially outward direction of the first member;
disposing membrane electrode assemblies provided in plural between the first member and the plurality of second members of a heat treatment apparatus in which at least the first member or the second members includes a heat wire member;
pressurizing the membrane electrode assemblies by moving the second members in a radially inward direction toward the first member; and
conducting heat to the membrane electrode assemblies by heating at least the first member or the second members, and
wherein the disposing the membrane electrode assemblies between the first member and the second members comprises: winding the membrane electrode assemblies on the first member so as to be stacked on the first member in a radially outward direction.

2. The heat treatment method of claim 1 , further comprising forming the membrane electrode assemblies, each membrane electrode assembly comprising a first electrode, a second electrode and an electrolyte membrane formed between the first electrode and the second electrode, prior to disposing the membrane electrode assemblies between the first member and the second members.

3. The heat treatment method of claim 1 , further comprising forming interleaving sheets between the membrane electrode assemblies, prior to disposing the membrane electrode assemblies between the first member and the second members.

4. The heat treatment method of claim 1 , wherein, in pressurizing the membrane electrode assemblies, the second members are moved in the radially inward direction toward the first member to pressurize the membrane electrode assemblies with a load of 500 kgf to 1000 kgf.

5. The heat treatment method of claim 1 , wherein, in pressurizing the membrane electrode assemblies:
when a pressurized load applied to the membrane electrode assemblies is less than 500 kgf, the second members are moved in the radially inward direction toward the first member; and
when the pressurized load applied to the membrane electrode assemblies exceeds 1000 kgf, the second members are moved in a radially outward direction.

6. The heat treatment method of claim 1 , wherein, in the conducting heat to the membrane electrode assemblies, the heat is conducted to the membrane electrode assemblies by heating at least the first member or the second members to a temperature range of 100° C. to 200° C.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Min Jin
• Yu Sam Hee
• Park Young June
• Lee Woo Jin
• Lee Ki Sub

Classifications

• H01M8/0267

  having heating or cooling means, e.g. heaters or coolant flow channels · CPC title

• H01M8/1004 Primary

  characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title

• H01M8/04037

  Electrical heating · CPC title

• Y02P70/50

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

• Y02E60/50

  Fuel cells · CPC title