Heat exchanger comprising deep-drawn heat exchanger plates

A method for producing a heat exchanger tube bundle for heat exchangers of electrochemical energy accumulators, in which a plurality of individual electrochemical storage cells are arranged next to one another in at least two adjacent rows, said method comprising:

• a) providing two deep-drawable material strips;
• b) incorporating at least one heat exchanger channel and a desired profile into the material strips by deep drawing;
• c) incorporating forward-flow distribution apertures for the heat exchanger tube bundle into a first material strip from step b), to form a first heat exchanger plate, and incorporating return collecting apertures for the heat exchanger tube bundle into a second material strip from step b), to form a second heat exchanger plate;
• d) aligning the first and the second heat exchanger plates formed in step c) in such a manner that i) webs of the two heat exchanger plates border each other, ii) the heat exchanger channels form heat exchanger tubes, and iii) the forward-flow distribution apertures and the return collecting apertures do not overlap;
• and
• e) joining together the heat exchanger plates as arranged in step d), to form the heat exchanger tube wherein the heat exchanger tubes span substantially an entire length of the heat exchanger plates in a longest dimension of the heat exchanger plates.