Method for determining state of charge of lead-acid...

Details Method for determining state of charge of lead-acid... Method for determining state of charge of lead-acid...

2005-01-31

2008-09-30

Rhee, Jane (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C320S132000, C320S137000, C320S151000

Reexamination Certificate

active

07429436

ABSTRACT:
In accordance with various embodiments, there is a method for determining the state of charge of a battery. Various embodiments include the steps of determining the specific gravity of the battery and measuring an open circuit voltage of the battery at rest. The open circuit voltage at rest can be used to determine the battery state of charge from a correlation function dependent on the battery specific gravity.

REFERENCES:
patent: 3684273 (1972-08-01), Bensen et al.
patent: 4626765 (1986-12-01), Tanaka
patent: 4719427 (1988-01-01), Morishita et al.
patent: 5049803 (1991-09-01), Palanisamy
patent: 5381096 (1995-01-01), Hirzel
patent: 6366054 (2002-04-01), Hoenig et al.
patent: 6380716 (2002-04-01), Finger
patent: 2002/0193953 (2002-12-01), Hoenig et al.
patent: 2005/0270033 (2005-12-01), Singh et al.

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