Patent ID: 9490639
Filing Date: 2016-11-08
CPC Classification: B60L,H01M,H02J,Y02E,Y02T

Claim Text:
1. An apparatus comprising a battery equalization system for a battery, said battery comprising at least two accumulator stages arranged in series, each of said at least two accumulator stages having a negative pole, a positive pole, and at least one accumulator placed between said negative pole and said positive pole; said battery equalization system comprising: a voltage generator comprising a positive terminal and a negative terminal and configured to apply a voltage between said positive terminal and said negative terminal; for each accumulator stage, a charging device, wherein each accumulator stage is associated with its own charging device, powered by said voltage generator, said charging device comprising at least one inductor, a first capacitor, a second capacitor, a first diode, a second diode, and a switch, wherein said first capacitor has a first end connected to a terminal of said voltage generator and a second end linked to said at least one inductor, wherein said second capacitor has a first end connected to a terminal of said voltage generator and a second end linked to said at least one inductor, wherein said first diode has an anode connected to said negative pole of the accumulator stage and a cathode connected to said second end of said first capacitor, wherein said second diode has an anode connected to said negative pole of the accumulator stage and a cathode connected to said second end of said second capacitor, wherein at least one diode in said charging device has an anode connected to said negative pole of the accumulator stage and has a cathode connected to one end of said at least one inductor, so as to allow, when said at least one diode is on, a charging current to flow through the accumulator stage, said at least one diode and said at least one inductor, and wherein said switch is linked to said at least one inductor and linked to a pole of the accumulator stage, such that said switch is connected in series with one of said at least one inductor and one of said first and second capacitors of said charging device between a terminal of said voltage generator and a pole of the accumulator stage; and a control device, wherein said control device is configured to control each one of the at least two accumulator stages to be charged with the following steps in order: