HEAT EXCHANGER AND METHOD OF OPERATION

A heat exchanger of an electrically driven motor vehicle, which includes a tube/rib block having a multiplicity of tubes and having a multiplicity of ribs. The tubes being arranged essentially in parallel to each other and spaced a distance apart, and the ribs each being arranged between two adjacent tubes. The ribs touching the two adjacent tubes, at least one manifold being arranged on one of the sides of the tube/rib block for the purpose of supplying fluid to tubes of the tube/rib block and for removing fluid from tubes of the tube/rib block. A cover device is arranged downstream and/or upstream from the tube/rib block for controlling the air flow through the tube/rib block temporarily or in certain regions for the defined removal of water from the tube/rib block. A method for operating a heat exchanger is also provided.