Method for controlling the power supply of an electric motor

摘要

A method and electrical system for controlling the power supply of an electric motor, in particular the electric motor of a vehicle that can be electrically driven, includes a control device that controls the power supply of the electric motor by an energy store. The energy store comprises a plurality of modules that are exposed to stress due to repeated charging and/or discharging and undergo an aging process as a result of said stress. In order to decouple the service life of the energy store from the service life of a vehicle, for example, the control device controls the charging and/or discharging of at least two modules differently such that said modules exhibit a stress difference so as to selectively reduce the aging process of the module being exposed to less stress.

主权项

1. A method for controlling a power supply of an electric motor, comprising:
controlling the power supply of the electric motor with a control device, the power supply having an energy store including a plurality of modules electrically connected together in parallel and configured to provide a current to the electric motor, each module having an average current during at least one of charging and discharging; and controlling the at least one of charging and discharging of at least two modules with the control device such that the average currents of the at least two modules are different, the controlling of the at least one of charging and discharging further comprising:
modifying a resistance value of at least one variable resistor of the power supply, the at least one variable resistor being configured to control the average current of at least one of the at least two modules.