基于反激变换器的动力电池组主动均衡研究

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中图分类号：U463.6 文献标志码：A DOI： 10.20104/j.cnki.1674-6546.20250017

Researchon ActiveBalancingofPowerBatteryPackBased onFlyback Converter

Liu Yingjie，Wang Kequan， Wang Chao，Huang Guozhi，Liu Hao （National institute of Guangdong Advanced Energy Storage，Guangzhou 510080）

【Abstract】To addressthe issue of complex switch matrix control in traditional active balancing technology in power batterypack，thispaper studiestheactivebalancing strategy basedonflyback converterand proposesaselectiveactive balancing topology，whichuses multiplexing switches toformadischarge circuit.Thesame switchcan functionasacircuit in diferentbaterycircitstobedischargedEnergytransmissionisachievedthroughaflybackconverter，allowingbaeryclls with SOC higherthan theaverage value todischarge tothebaterypack.Onthis basis，astatespace modelof theactive balancing system hasbeenestablished，andthereferencecurrentofthefly-back converterhasbeenoptimized through model predictionoptimizationalgorithm.The balancing processcan achieve high eficiencyandthereliabilityof balancing control canbeimproed.Finallynctivebalancingtestplatfoisstablshd，ndteorrectessofteteorticalalysisd the progressivenessof theproposed active equalization topologyand control strategy are verifiedby experiment.

Key words：Active balance，Selective topology，State of charge，Model predictive control，State space model

【引用格式】刘英杰，汪科全，王超，等.基于反激变换器的动力电池组主动均衡研究[J].汽车工程师，2026（1）：25-31. LIU YJ， WANG KQ，WANGC，etal.Research on Active Balancing of Power BateryPack Based on Flyback Converter[J]. Automotive Engineer，2026（1）： 25-31.

1前言

动力电池作为电动汽车的核心部件之一，不仅能够在车辆行驶过程中提供动力，还能够在充换电站中作为储能电池，参与电网的主动调节。（剩余8203字）