Patent ID: 6942938

Claim:
A system for cooling a fuel cell arrangement that includes a fuel cell and at least one additional component that is to be cooled, the system comprising: a coolant circuit for circulating in a coolant, the coolant circuit including at least one cooler, at least one coolant delivery device, and at least two valve devices that are assigned to the fuel cell and the additional component, respectively, wherein a flow rate of the coolant through the fuel cell is influenced by one of the valves as a function of the temperature in a region assigned to the fuel cell, and a flow rate of coolant through the additional component is influenced by the other valve as a function of the temperature in a region assigned to the additional component; wherein the coolant circuit has a bypass line around the cooler and another bypass line around at least one of the fuel cell and the additional component, the valve devices being arranged such that they influence the ratio of the rates of flow through the cooler and the bypass line around the cooler and the ratio of the rates of flow through the at least one of the fuel cell and the additional component and the bypass line around the at least one of the fuel cell and the additional component; and wherein a sensor for sensing the temperature, as a function of which the valve device assigned to the bypass line around the cooler can be operated, is arrange in the flow direction of the coolant behind the flowing together of the volume flows of the coolant coming from the cooler and from the bypass line around the cooler.