Patent ID: 9203336
Filing Date: 2015-12-01
Classification: B60L,H02J,H02M,H02P,Y02T

Abstract:
1. A drive unit for an electric motor comprising: a multilevel inverter; and a battery having at least one battery module string including a plurality of series-connected battery modules, wherein each battery module includes at least one battery cell and a coupling unit, wherein the at least one battery cell is connected between a first input and a second input of the coupling unit and the coupling unit is configured to connect the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module in response to a first control signal, and to connect the first terminal to the second terminal in response to a second control signal, wherein a plurality of center taps are arranged at the battery module string and are configured to tap a potential at a connection between in each case two battery modules in the plurality of battery modules, and wherein inverter inputs of the multilevel inverter are connected to the center taps.