Method for manufacturing a battery, battery arrangement and modular system

A battery arrangement, comprising:

• at least one battery module having a plurality of battery cells;
• a support device configured to hold the at least one battery module and having two rails of substantially L-shaped cross section for supporting the at least one battery module and a single-piece support plate which is separate from said two rails, each of said rails has a vertical leg and also a horizontal leg with a longitudinal groove having a width in a vertical direction, said support plate extending between said two rails in a longitudinal direction and having two horizontally extending ends each having a vertical width which corresponds to the vertical width of the longitudinal groove and each fittingly engaging in a corresponding one of the longitudinal grooves of the horizontal legs of said two rails to connect them with each other, said at least one battery module and said support plate of said support device defining a receiving space;
• at least one heat sink insertable in the receiving space and configured to provide liquid cooling or cooling with a gaseous medium;
• and
• at least one guide arranged between the rails and configured to facilitate insertion of the at least one heat sink into the receiving space and to contact the at least one heat sink, when the at least one heat sink is accommodated in the receiving space in the guide, said guide being part of the support device or the battery module and including at least two vertical guide rails which extend in the receiving space upwardly from said support plate and in a direction transverse to the longitudinal direction, said vertical guide rails are of one piece with said support plate and are spaced from said ends of said support plate and are spaced from each other in the longitudinal direction to receive each of the heat sinks exclusively directly between the two of the vertical guide rails extending from the support plate without intermediate elements so as to laterally embrace the heat sink, said support plate having a straight upper horizontal surface and each of said heat sinks has a straight lower horizontal surface and contact with said straight upper horizontal surface of said support plate.