The detection of dead battery cells can be obtained by
studying parameter characteristic of that battery.
Battery has its internal characteristic and circuit
parameters are changed according to the lifetime and the
operation temperature. Therefore the detection of dead battery
cells by studying internal characteristic is proposed in this
paper to indicate the deterioration of battery. In order to obtain
the deterioration of battery, it is necessary to study its internal
characteristic. An experiment is tested by constant current
charging and discharging method. The experimental results are
analyzed to fmd out the internal characteristic.
The development of battery monitoring system by
detecting dead battery cells is proposed in this paper. The
parameter of battery, which are voltage, voltage per cell,
current, and temperature are shown. The monitoring device
can also report the deterioration of battery to the user in order
to avoid damage to the battery. Moreover it can reduce wasted
battery to an environment.
This paper is organized as follow. Section II reviews
the related theory. Section III introduces the monitoring circuit
and explains each circuit in detail. Section IV describes a
battery test and shows the experimental results. Finally,
Section V concludes the paper.