To address the degradation of battery cell consistency during prolonged charging/discharging cycles in electric vehicle power battery packs-caused by variations in manufacturing processes and operating environments-which adversely affects battery capacity, lifespan, and safety, this study proposes a hybrid active-passive battery balancing control system. The system integrates the advantages of both approaches, employing a switch matrix as the primary component and a controller as the core, while enabling automatic execution of balancing strategies. When cell inconsistencies occur within a battery pack, passive balancing is applied to reduce energy consumption. For significant inter-pack energy disparities, active balancing is employed to accelerate the process. These two methods operate independently and can be used simultaneously, demonstrating strong practical engineering value.