Fuel cell stack e.g. proton exchange membrane (PEM) fuel cell stack for internal combustion engine used in motor car, establishes heat conductive connection between sheet-shaped metal partition structure and partial structures

摘要

The fuel cell stack has bipolar plates (2) that are arranged between electrode-electrolyte units (1a,1b). The channels (K) are provided for supplying carbon dioxide and hydrogen gases for respective electrode. A flow space for cool air (L) is formed between partial structures (2a,2b) which are spaced apart by spacer element. A heat conductive connection is established between sheet-shaped metal partition structure (2c) and partial structures such that channels for cool air are formed. The channel walls (W) extended between partial structures are in contact with cool air. An independent claim is included for motor car.