Optimized method for determining remaining life cycles in a rech

Details Optimized method for determining remaining life cycles in a rech Optimized method for determining remaining life cycles in a rech

1998-07-31

2000-02-08

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

324427, 340636, H01M 1044

Patent

active

060231505

ABSTRACT:
A method (200) of estimating existing and/or remaining life cycles of a battery pack (102) having an internal battery cell (104) and battery pack circuitry (110) is based on determining an impedance value of the internal battery cell (Zcell) (104), measuring the battery pack temperature (212), compensating the internal battery cell impedance based on the temperature (218), and estimating the remaining battery life based on the compensated internal battery cell impedance (220). The estimated life cycle value is then communicated to a user through either a charger or radio (112).

REFERENCES:
patent: 4678998 (1987-07-01), Muramatsu
patent: 4888716 (1989-12-01), Ueno
patent: 5352968 (1994-10-01), Reni et al.

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