Method for checking power status of batteries

Details Method for checking power status of batteries Method for checking power status of batteries

2005-02-01

2005-02-01

Tibbits, Pia (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Reexamination Certificate

active

06850036

ABSTRACT:
A method of checking power status of the batteries is disclosed. New batteries are first prepared for discharge tests with different discharge rates, and the standard discharge data for different types of batteries are recorded in a data base for use in power estimation. Afterwards, the battery set installed in an uninterrupted power supply (UPS) system is connected to a monitoring device for continuous monitoring of the test discharge data and discharging time in repeated random discharge tests. The characteristic data including current output, operating temperature, and terminal voltage of the tested battery are then collected and compared with the relevant standard discharge data retrieved from the data base to produce a true estimation of the remaining power of the tested battery.

REFERENCES:
patent: 5371682 (1994-12-01), Levine et al.
patent: 5703469 (1997-12-01), Kinoshita

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