Patent ID: 8814086
Filing Date: 2014-08-26
Classification: B64D,H01M,Y02B,Y02E,Y02T

Abstract:
1. An on-board supply system for use in an aircraft, comprising: a fuel cell unit for generating electrical energy and heat energy, at least one consumer system, the fuel cell unit configured to release heat energy in the form of hot air, and the at least one consumer system configured to absorb the electrical energy and the heat energy in the form of hot air, wherein the fuel cell unit comprises at least one low-temperature (LT) fuel cell and at least one high-temperature (HT) fuel cell, the at least one LT fuel cell and the at least one HT fuel cell are configured to be regulated to the respective operating temperature in operation by means of air cooling, and an air cooling outlet of the at least one LT fuel cell is connected in direct fluid communication with an air cooling inlet of the at least one HT fuel cell, a hot air pipe bus system configured to guide hot air from the at least one HT fuel cell to the at least one consumer system, and a fan disposed upstream of an air cooling inlet of the at least one LT fuel cell, for conveying air required for feeding an oxidation medium to the at least one LT fuel cell and the at least one HT fuel cell, such that the discharged air of the at least one HT fuel cell has substantially the same oxygen content as air outside of the aircraft.