Power supply unit, distributed power supply system and...

Details Power supply unit, distributed power supply system and... Power supply unit, distributed power supply system and...

2005-07-12

2005-07-12

Tibbits, Pia (Department: 2838)

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

Reexamination Certificate

active

06917181

ABSTRACT:
A power supply unit with improved charge/discharge operation for use in distributed power supply system or electric vehicles. The power supply unit includes a storage battery comprising a plurality of circuits connected in series. Each of the plurality of circuits includes a first cell group and a second cell group connected in parallel. The first cell group includes lithium secondary cells or electrical double layer capacitors. The second cell group utilizes an electrolyzable electrolytic solution, or is capable of generating recombinable gas. The second cell group may include lead cells, nickel hydrogen cells, nickel cadmium cells and/or fuel cells. A charger/discharger is provided for controlling charge/discharge of the storage battery adapted to charge the storage battery up to a voltage at which the electrolytic solution of the second cell group is electrolyzed, or to a voltage at which the generated gas is recombined.

REFERENCES:
patent: 5488283 (1996-01-01), Dougherty et al.
patent: 5557189 (1996-09-01), Suzuki et al.
patent: 5726553 (1998-03-01), Waugh
patent: 6229279 (2001-05-01), Dierker
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patent: 6680600 (2004-01-01), Emori et al.
patent: 6700349 (2004-03-01), Emori et al.
patent: 6747438 (2004-06-01), Emori et al.

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