WATER MANAGEMENT SYSTEM FOR DIRECT METHANOL FUEL CELL AND DIRECT METHANOL FUEL CELL SYSTEM COMPRISING THE SAME

摘要

A water management system for a direct methanol fuel cell of the present invention comprises a stack receiving a fuel from a fuel dilution and gas-liquid separator and oxygen from an air supply unit, generating electricity, and including one, or two or more arranged membrane electrode assemblies; the air supply unit supplying oxygen used as an oxidizer in a reaction of a cathode forming the stack to the cathode; and a cathode generated water recovery unit recovering generated water generated in the cathode. The cathode generated water recovery unit can comprise a buffer tank storing water passing through a polymer electrolyte film forming the stack to the cathode and water generated in the cathode, and connected with a rear end of the cathode; and a cathode heat exchanger in which one side is connected with the buffer tank, and unreacted air and vapor of the buffer tank flow in.