US 10,946,712 B2 · Method for operating a vehicle with a fuel cell unit

Abstract

A vehicle includes a fuel cell unit with which is associated a first coolant circuit, with a second coolant circuit associated with the interior of the vehicle, in which is held a coolant of lower temperature relative to the coolant of the first coolant circuit. Given higher demand for cooling capacity in the first coolant circuit, a valve is opened by a control device, independently of the heat demand in the second coolant circuit, to open a first connecting conduit between the first coolant circuit and the second coolant circuit, and thus, using a second connecting conduit, forms a common ring conduit for the first coolant circuit and the second coolant circuit with the accumulated coolant from the first coolant circuit and the second coolant circuit.

Claims13

Dependent claims

A method, comprising:

operating a vehicle, the vehicle including a fuel cell unit, an interior, a first coolant circuit for controlling a temperature of the fuel cell unit, and a second coolant circuit for controlling a temperature of the interior, wherein the first coolant circuit includes a first coolant having a first temperature and the second coolant circuit includes a second coolant having a second temperature that is lower than the first temperature;
wherein operating the vehicle includes, in response to a high cooling capacity demand in the first coolant circuit and independent of a heating demand in the second coolant circuit, operating a control device to open a valve to open a connecting conduit between the first coolant circuit and the second coolant circuit and form a common ring conduit including the first coolant circuit and the second coolant circuit.

Dependencies are inferred from the claim text.

Method for operating a vehicle with a fuel cell unit

Life of this patent

Method for operating a vehicle with a fuel cell unit

Life of this patent

Abstract

Claims13