Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1995-08-21
1997-05-20
Tso, Edward
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 15, 320 21, H01M 1046
Patent
active
056315341
ABSTRACT:
A battery balancing system for balancing charge among series connected batteries. The battery balancing system includes a series connected battery array having a predetermined number of series connected batteries. A predetermined number of bidirectional charge balancing modules are provided and each respective module is coupled across two consecutive batteries. A controller is connected to each of the batteries for sensing the state of charge of each of the batteries and for providing control output signals that turn on and off and control the current direction flow of the modules to balance charge among batteries. Each module includes first and second series connected switches coupled across two consecutive batteries. Each of the series connected switches have control inputs connected to control outputs of the controller. First and second diodes are respectively coupled across the first and second series connected switches. An inductor is coupled from a point between the first and second series connected switches and a point between the batteries.
REFERENCES:
patent: 4502000 (1985-02-01), Mashikian
patent: 4502001 (1985-02-01), Galloway
patent: 4949028 (1990-08-01), Brunt
patent: 4967136 (1990-10-01), Nofzinger
patent: 5498950 (1996-03-01), Ouwerkerk
Delco Electronics Corp.
Navarre Mark A.
Tso Edward
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