Method and system for monitoring state of lead acid battery

   
   

In order to monitor a state of a battery, a threshold value of an internal impedance of the battery is first determined. It is prepared an approximate expression indicating a correlation between a residual capacity of the battery and an internal impedance of the battery which is greater than the threshold value. The internal impedance of the battery is then measured. When the measured internal impedance is the threshold value or less, the residual capacity is determined as an initial value. When the measured internal impedance is greater than the threshold value, the residual capacity is monitored with the approximate expression.

Para supervisar un estado de una batería, un valor de umbral de una impedancia interna de la batería primero se determina. Está preparado una expresión aproximada que indica una correlación entre una capacidad residual de la batería y una impedancia interna de la batería que es mayor que el valor de umbral. La impedancia interna de la batería entonces se mide. Cuando la impedancia interna medida es el valor o menos de umbral, la capacidad residual se determina como valor inicial. Cuando la impedancia interna medida es mayor que el valor de umbral, la capacidad residual se supervisa con la expresión aproximada.

 
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