The disclosure discloses an identification method of a multi-characteristic fusion model of power battery fractional order equivalent circuit.. The method comprises the steps: creating a power batteryfractional order equivalent circuit multi-characteristic fusion model including a capacity characteristic sub-model, an electrical characteristic sub-model and a fractional order open-circuit voltageOCV-SOC model; and performing a charging and discharging test on the power battery, and identifying each parameter in the fractional order equivalent circuit multi-characteristic fusion model of thepower battery. The capacity characteristic sub-model describes the state of charge of the battery; self-discharge internal resistance is added, the self-discharge characteristic of the battery is expressed; the electrical characteristic sub-model describes the voltage-current characteristics of the battery; the capacity characteristic sub-model and the electrical characteristic sub-model establisha relationship through a fractional order open-circuit voltage OCV-SOC model, charging and discharging currents and an SOC control voltage source OCV, and a controlled voltage source OCV in the electrical characteristic sub-model changes along with the SOC change of the capacity characteristic sub-model.. The constructed power battery fractional order equivalent circuit multi-characteristic fusion model shows the self-discharge characteristic of the battery.
本公开公开的一种动力电池分数阶等效电路多特性融合模型的辨识方法,包括:创建动力电池分数阶等效电路多特性融合模型,包括,容量特性子模型、电特性子模型和分数阶开路电压OCV‑SOC模型,容量特性子模型描述电池的荷电状态,并加入自放电内阻,表述电池自放电特性,电特性子模型描述电池的电压‑电流特性,容量特性子模型和电特性子模型通过分数阶开路电压OCV‑SOC模型、充放电电流和SOC控制电压源OCV建立联系,电特性子模型中受控电压源OCV随容量特性子模型的SOC变化而变化;对动力电池进行充放电试验,辨识动力电池分数阶等效电路多特性融合模型中各参数。构建的动力电池分数阶等效电路多特性融合模型,表现了电池的自放电特性。
Identification method of multi-characteristic fusion model of power battery fractional order equivalent circuit
一种动力电池分数阶等效电路多特性融合模型的辨识方法
2020-09-29
Patent
Electronic Resource
Chinese
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