APPARATUS FOR AND A METHOD OF BALANCING THE STATE OF CHARGE OF SUB-UNITS OF A BATTERY

WIPO Patent Application WO/1993/010589

A1

Apparatus for balancing the state of charge of a plurality of serially connected sub-units (1) of a battery comprises state of charge monitoring means operative to monitor the state of charge reached by each sub-unit (1). Discharging means (R) operate in response to the state of charge monitoring means to discharge sub-unit which store more charge than another sub-unit. The discharge is performed for a period of time in order to reduce the inequality in the state of charge between said sub-units (1). The state of charge monitoring means preferably includes a processor which monitors the voltage (V0, V2, V3... Vn) across the sub-units and applies control signals to terminals (T1, T2...Tn) in order to control the balancing discharge of the sub-units (1).

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MANGAN MICHAEL FRANCIS (GB)
MOLYNEUX JOHN (GB)

PCT/GB1992/002147

May 27, 1993

November 20, 1992

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SILENT POWER GMBH (DE)

H02J7/00; (IPC1-7): H02J7/00

WO1992006525A2

1992-04-16

US4816735A	1989-03-28
DE3533437A1	1987-03-26

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