The invention provides a capacity fading calculation method and device for a power battery, electronic equipment and a storage medium, and the method comprises the steps: carrying out the linear fitting of a plurality of groups of first data based on a least square method, and solving a parameter of a fitting function, determining a first SOHC value based on the parameters of the fitting function and the rated capacity of the battery, and correcting the stored SOHC value based on the first SOHC value, the second SOHC value and the third SOHC value to obtain the SOHC value of the power battery. The method can calculate the capacity attenuation of the power battery. And on the other hand, compared with the prior art, the capacity identification robustness and strong traceability under the dynamic working condition and the complex degradation environment can be ensured, that is, the stability and real-time performance of the capacity identification under the dynamic working condition and the complex degradation environment can be ensured.
本申请提供一种动力电池的容量衰减计算方法、装置、电子设备和存储介质,其中,动力电池的容量衰减计算方法包括:基于最小二乘法线性拟合多组所述第一数据求解拟合函数的参数,并基于所述拟合函数的参数和电池额定容量确定第一SOHC数值,基于所述第一SOHC数值、所述第二SOHC数值和所述第三SOHC数值修正存储SOHC数值,以得到所述动力电池的SOHC数值等步骤。本申请能够计算动力电池的容量衰减。另一方面,与现有技术相比,本申请能够确保动态工况、复杂的劣化环境下的容量辨识鲁棒性及强追踪性,即能够确保动态工况、复杂的劣化环境下的容量辨识实稳定性和实时性。
Capacity fading calculation method and device of power battery, electronic equipment and storage medium
动力电池的容量衰减计算方法、装置、电子设备和存储介质
29.09.2023
Patent
Elektronische Ressource
Chinesisch
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