Voltage equalising circuit for multiple cell vehicle battery

摘要

The circuit has a capacitor connectable in parallel to accumulator cells by switching system The accumulator includes a capacitor (C1) able to be connected in a parallel to at least two of the accumulator cells. A switching and connection system (S11-S41 and S12-S42) is able to establish selectively a first or second mode of connection. In the first mode, the capacitor may be charged or discharged by accumulators. In the second mode, the capacitor is similarly connected to a different group of accumulators. Switching between modes is executed rapidly and repetitively, so that the voltages of the elements become equalised.