Secondary battery charge control device and method of using the

Details Secondary battery charge control device and method of using the Secondary battery charge control device and method of using the

1998-10-05

2000-03-07

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With peak detection of current or voltage

320151, 320161, H01M 1044, H01M 1046

Patent

active

060345101

ABSTRACT:
The voltage of each of battery block of a battery is detected by a voltage sensor. Further, the temperature of the battery is detected by a temperature sensor. These detected values are supplied to a detecting section of a battery ECU. A judging section reads out the threshold value of the voltage stored in a memory, on the basis of the detected values of temperature, and compares the threshold value of the voltage with the detected voltage of each of the battery blocks. Then, if at least any one is less than the threshold value of the voltage, a relay is turned off. Furthermore, the threshold value of the voltage is arranged to be the voltage at the moment when the value of the current is suddenly increased by the discharge of a constant current of the battery.

REFERENCES:
patent: 4629965 (1986-12-01), Fallon et al.
patent: 5570001 (1996-10-01), Fenley

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