Sealing assembly for a fuel cell stack having a coated metallic sheet intermediate element

US9812716B2 · kind B2 · utility

Assignee

• ElringKlinger AG · DE

Inventors

• Hans-Rainer Zerfass · Burscheid, DE
• Armin Diez · Lenningen, DE
• Peter Schenk · Bärnau, DE
• Wolfgang Fritz · Linden, DE
• Peter Lamp · Landsberg am Lech, DE
• Manfred Wier · Wenzenbach, DE
• Joachim Tachtler · Ismaning, DE

Key dates

• Filing date: Jan 22, 2014
• Grant date: Nov 7, 2017
• Expiry date: Sep 25, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

In order to provide a sealing assembly for a fuel cell stack comprising a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein each of the fuel cell units comprises a housing with at least one housing part made of a metallic material, which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing assembly comprises at least one intermediate element made of a metallic material, wherein the intermediate element is soldered to a housing part of a first fuel cell unit at at least one location by means of a metal solder and is secured to a housing part of a second fuel cell unit at at least another location, wherein the intermediate element and/or the housing part of the first fuel cell unit is provided with a coating made of a ceramic material.