Method and apparatus for determining the state of charge of a ba

Details Method and apparatus for determining the state of charge of a ba Method and apparatus for determining the state of charge of a ba

1986-06-02

1990-09-18

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

320 48, 324427, 324431, G01N 2746

Patent

active

049581279

ABSTRACT:
A method of determining the state of charge of a motor vehicle battery 1 in which a stabilization load 2 is applied to the battery 1 after the engine is switched off to accelerate the stabilization of the charge distribution within the battery 1. The stabilization load 2 is applied until the terminal voltage of the battery 1 reaches a level corresponding to a predicted value of the state of charge of the battery 1. After a pre-determined delay of 8 hours or less, the terminal voltage of the battery 1 is measured and the state of charge derived therefrom.

REFERENCES:
patent: 3971980 (1976-07-01), Jungfer et al.
patent: 4333149 (1982-06-01), Taylor et al.
patent: 4377787 (1983-03-01), Kikuoka et al.
patent: 4390841 (1983-06-01), Martin et al.
patent: 4433295 (1984-02-01), Zaugg
patent: 4460870 (1984-07-01), Finger
patent: 4573126 (1986-02-01), Lefebvre et al.

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