Method for charging an energy storage element of a vehicle using a modular charging apparatus with high overall efficiency

A method for charging an energy storage element of a vehicle using a charging apparatus which provides a charging current (IL) and a charging voltage (U) at an operating point, wherein the charging apparatus has a plurality of energy supply modules connected in parallel, said method comprising:

• in an optimization step, the method comprises distributing the charging current to the energy supply modules connected in parallel, wherein the charging apparatus has a maximum overall efficiency that is respectively determined for a plurality of predefined operating points;
• and
• in a charging step which follows the optimization step, the method comprises distributing the charging current (IL) to the individual energy supply modules of the charging apparatus, wherein the charging apparatus has a maximum overall efficiency that is selected on the basis of a predefined charging current (IL) and a predefined charging voltage (U),
• wherein, during the charging step, the method comprises selecting the distribution of the charging current to the individual energy supply modules using a decision tree classifier.