METHOD FOR BALANCING THE CHARGE STATES OF BATTERY CELLS IN A BATTERY AND BATTERY FOR IMPLEMENTATION OF THE METHOD

摘要

A method is described for the control of a battery (10) comprising at least one battery module string (50) with a number of battery modules (40-1, 40-2) connected in a series. Each battery module (40-1, 40-2) comprises at least one battery cell (41), at least one coupling unit (30, 70), a first connection (42) and a second connection (43) and is designed for accommodating one of at least two switching states depending on an actuation of the coupling unit (30, 70), wherein different switching states correspond to different voltage values between the first connection (42) and the second connection (43) of the battery module (40-1, 40-2). According to the method, a first and second output voltage (+U1, -U2) of the battery module string (50) are provided and applied to an inductivity (L) during a first and second time interval. In the process, the second output voltage (-U2) has the opposite polarity of the first output voltage (+U1).