Bridge battery voltage equalizer

Details Bridge battery voltage equalizer Bridge battery voltage equalizer

2006-11-21

2009-11-03

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

Having variable number of cells or batteries in series

C320S118000, C320S119000, C320S121000

Reexamination Certificate

active

07612530

ABSTRACT:
This present invention provides a bridge battery voltage equalizer to equalize the voltages of the serially connected battery strings, comprising at least one battery crossing over an energy-transferring circuit. A plurality of the energy-transferring circuits are interconnected in a bridge architecture. Each energy-transferring circuit having four nodes comprises a first semiconductor switch, a first diode, a second semiconductor switch, a second diode, and an inductor. One end of the first element switch is connected to a negative pole of the first diode thereto. A positive pole of the second diode is connected to one end of the second element switch thereto. The inductor is an energy storing element that crosses over between the negative pole of the first diode and the positive pole of the second diode.

REFERENCES:
patent: 4041363 (1977-08-01), Scheidler
patent: 5631534 (1997-05-01), Lewis
patent: 5659237 (1997-08-01), Divan et al.
patent: 1998-052061 (1998-02-01), None

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