PASSIVE SOH BALANCING SCHEME FOR LITHIUM BATTERY BASED ON SWITCHING SHUNT RESISTANCE
The existing passive balancing schemes for the state of health(SOH)of lithium batteries focus on the state of charge(SOC)of lithium batteries,and mature SOH balancing technologies have not yet been formed.To address this issue,a passive SOH balancing scheme between lithium battery packs based on shunt resistance is proposed.The principle of SOH balancing is analyzed,and the calculation of shunt resistance value and the connection removal rule are studied.This achieves SOH balancing of the lithium batteries,enabling all lithium batteries to retire simultaneously and reducing maintenance costs.Finally,the effectiveness of the proposed scheme is validated through simulation and experimental verification using Matlab simulation software and an experimental platform.
battery packswitching circuitspower controlpassive balancingstate of healthdepth of discharge
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