A Comprehensive Review of Various Topologies and Control Techniques for DC-DC Converter-Based Lithium-Ion Battery Charge Equalization

Table 4

Comparison of bookkeeping method of SOC estimation.

Methods	Principle	Merits	Demerits
CC [96]	This method estimates SOC by measuring the discharging current first and then integrating it with time. The SOC (t) is calculated by discharging current I (t).	(i) Low power consumption; (ii) Easy implementation	(i) Less accuracy; (ii) Difficult to define initial SOC values
MCC [97]	This approach improves estimation accuracy by using rectified current values. The function of discharging current is the rectified current. Corrected current and discharging current have a quadratic connection.	(i) More accuracy; (ii) Low power consumption; (iii) Easy implementation	(i) Highly depend on discharging current