| 摘要 |
<p>An arrangement which comprises two or more energy storage units (1) for electrical energy connected in series, two or more balancing resistor units (2), each balancing resistor unit (2) connected in parallel with one of the energy storage units (1), means (3) for determining a voltage ( U tot ) over all of the series-connected energy storage units and means (3) for determining the energy storage unit voltages ( U cap ) between poles of the energy storage units (1). One or more of the balancing resistor units (2) comprise a base resistor unit (2.1) and a control resistor unit (2.2) connected in series and a switching device (2.3) connected in parallel with the control resistor units (2.2). The arrangement further comprises means (3) for determining reference voltages ( U ref ) for the energy storage units (1) on the basis of the voltage ( U tot ) over all of the series-connected capacitors and means (3) for controlling the switching device (2.3) to control the resistance of one or more of the balancing resistor units so that the energy storage unit voltage ( U cap ) of each energy storage unit (1) is maintained within a set range of the reference voltage ( U ref ) for each energy storage unit (1).</p> |
