High speed battery charging system with high accuracy voltage se

Details High speed battery charging system with high accuracy voltage se High speed battery charging system with high accuracy voltage se

1999-01-29

2000-04-25

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Regulated discharging

H02J 700

Patent

active

060548436

ABSTRACT:
A battery charging system 100 is provided which comprises a charger 101 and a battery pack 102. The battery pack 102 comprises a battery cell or cells 150, memory means 140, temperature sensing means 147, and a high accuracy, high impedance voltage sensing means 112 that senses voltage directly at the battery cell terminals 151, 149. By sensing directly at the cell terminals 151, 149, charging error due to parasitic conductor impedances 132, 138 can be eliminated. The voltage sensing means 112 allows memory 140 and thermistor 147 data to be multiplexed, allowing the system to operate with four or fewer battery terminals.

REFERENCES:
patent: 5764028 (1998-06-01), Freiman et al.
patent: 5825155 (1998-10-01), Ito et al.
patent: 5903137 (1999-05-01), Freiman et al.
patent: 5939865 (1999-08-01), McGrath et al.
patent: 5955865 (1999-09-01), Koike et al.
patent: 5965991 (1999-10-01), Koike et al.
patent: 5969625 (1999-10-01), Russo
patent: 5986435 (1999-11-01), Koenck

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