| 摘要 |
A parallel device comprises a battery module, a plurality of switching units and a control module being couplable to the battery module. The battery module includes a plurality of battery groups. The plurality of switching units includes a plurality of first switches. Each of the switching units is couplable to a respective battery group in series. Each series combination of the switching unit and the respective battery group is coupled in parallel with another series combination, and each of the switching unit includes a respective first switch coupled with a load in series. The control module is configured to receive values of measured voltages across at least two battery groups, calculate a voltage difference between the two received voltage values, compare an absolute value of the voltage difference to a reference voltage to obtain a voltage comparison result, and turn ON or OFF at least one of the first switches in accordance with the comparison result
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