Title :
A life indicator of stationary type sealed lead-acid battery
Author :
Yamanaka, M. ; Ikuta, K. ; Matsui, T. ; Nakashima, H. ; Tomokuni, Y.
Author_Institution :
Yuasa Battery Co. Ltd., Osaka, Japan
Abstract :
To determine a life span of a sealed lead-acid battery, it is important to measure an internal impedance and an operating temperature. The authors describe a battery life indicator which applies these measurements for overall life determination. The major features are as follows: the life indicator can digitally display the number of remaining years of battery life from installation until the end of life of a sealed lead-acid battery during floating charge, without disconnecting a load from the battery; and the life indicator can be realized by the use of a simple circuitry because a measuring current for internal impedance can be supplied through a commercial transformer without use of an inverter
Keywords :
electric impedance measurement; lead; secondary cells; temperature measurement; Pb acid battery; internal impedance; life indicator; operating temperature; stationary type sealed lead-acid battery; Battery charge measurement; Capacitance measurement; Charge measurement; Conductivity measurement; Current measurement; Impedance measurement; Inductance measurement; Shape measurement; Temperature dependence; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1991. INTELEC '91., 13th International
Conference_Location :
Kyoto
Print_ISBN :
0-87942-670-5
DOI :
10.1109/INTLEC.1991.172397
