Voltage equalizing circuit for battery, e.g. for electric vehicle, has several windings electromagnetically coupled to reference winding by synchronous control of switching elements

摘要

The battery voltage equalizing circuit has several windings (P1-Pn) electromagnetically coupled to one another. Each of several storage elements (E1-En) is connected in series. Each of several switching elements (S1-Sn) is connected in series so as to constitute a number of closed circuits. A voltage reference winding (Pp) is electromagnetically coupled to the other windings. The switches are activated and de-activated synchronously to couple the reference with the other windings.