Fuel cell system and method for controlling a heating current for temperature control of a fuel cell stack of a fuel cell system

Abstract

The invention relates to a fuel cell system (100), wherein the fuel cell system (100) comprises a fuel cell stack (10) for generating an output voltage and a boost converter (30) for increasing the output voltage of the fuel cell stack (10), having at least one converter unit (31a, 31b, 31c, 31d), wherein the converter unit (31a, 31b, 31c, 31d) comprises a coil (33) and a controllable switch (34) for increasing the output voltage of the fuel cell stack (10), wherein the controllable switch (34) comprises a variable resistor. Furthermore, the fuel cell system (100) comprises a control apparatus (50), wherein the control apparatus is configured so as to control the controllable switch (34) of the at least one converter unit (31a, 31b, 31c, 31d) in such a way that the resistor of the controllable switch (34) of the at least one converter unit (31a, 31b, 31c, 31d) is adjusted for controlling a heating current for temperature control of the fuel cell stack (10).

Dependencies are inferred from the claim text.