Memory effect sensitive battery monitoring apparatus for electri

Details Memory effect sensitive battery monitoring apparatus for electri Memory effect sensitive battery monitoring apparatus for electri

1996-05-17

1997-12-16

Tso, Edward

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 43, H01M 1046

Patent

active

056989628

ABSTRACT:
A battery condition monitoring system which may be employed in an electric vehicle is disclosed. This system determines a terminal voltage of a battery under discharge of a given current and a consumption of electric energy stored in the battery and calculates a rate of change in terminal voltage of the battery relative to change in consumption of electric energy. When a difference between the rate of change in terminal voltage of the battery and a reference rate representing a rate of change in terminal voltage of a normal battery relative to change in consumption of electric energy is greater than a given value, the system determines that memory effect is occurring in the battery.

REFERENCES:
patent: 4553081 (1985-11-01), Koenck
patent: 4709202 (1987-11-01), Koenck et al.
patent: 4845419 (1989-07-01), Hacker
patent: 5268845 (1993-12-01), Startup et al.
patent: 5432429 (1995-07-01), Armstrong, III et al.

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