Storage battery voltage control apparatus

Details Storage battery voltage control apparatus Storage battery voltage control apparatus

1997-09-10

1999-08-03

Elms, Richard T.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

320116, 320134, B60R 2200

Patent

active

059329327

ABSTRACT:
Eight storage battery cells 11.sub.1 to 11.sub.8 making up a storage battery cell group 2 can be connected selectively to a voltage-correcting storage battery 12 through nine cell change-over switches 13.sub.1 to 13.sub.9, four polarity-inverting switches 14.sub.1 to 14.sub.4 and a current-limiting resistor 15. When the voltages of two or more of the storage battery cells 11.sub.1 to 11.sub.8 are different, the voltages of each of the storage battery cells 11.sub.1 to 11.sub.8 can be equalized by then transferring the charge from a storage battery cell high in voltage to the voltage-correcting storage battery 12 and by transferring the charge of that voltage-correcting storage battery 12 to a storage battery cell low in voltage. As a result, the voltage difference due to the performance variations among the individual storage battery cells 11.sub.1 to 11.sub.8 can be obviated thereby to increase the working voltage range of the storage battery cell group 2 as a whole.

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