Measuring the internal resistance of a cell in assembled batteries

SOH estimation of lead acid battery by the variation of equivalent circuit parameters by the deterioration

“…The same equation can be used on charging and discharging, however, parameters are different. [5] The equivalent circuit of experiment control current during charge and discharge. RJ can be calculated by instantaneous voltage drop and shown in Equation The voltage decay is exponential.…”

“…It is regarded as finished after 120 minutes which the voltage is OCV. R2 can be calculated by Equation (5) V 2 -OCV r R = . 2 I At the same time, C can be calculated by Equation (6) (5)…”

Dc Microgrid Stabilization Through Fuzzy Control of Interleaved, Heterogeneous Storage Elements

“…One additional complication is that lead-acid batteries have a non-negligible internal resistance, as noted by Ichimura et al [30] and many others. This is accounted for by the addition of the resistance R ib in the battery bank phase of the stabilizer (see Figure 3.8).…”