The invention provides a battery state-of-charge adaptive weighted estimation method and device and a vehicle, and the method comprises the steps: obtaining a first state-of-charge estimation value and a second state-of-charge estimation value, calculating the absolute value deviation of the first state-of-charge estimation value at the current moment and a weighted state-of-charge estimation value at the previous moment, and calculating the absolute value deviation of the weighted state-of-charge estimation value at the previous moment; searching a first weight value corresponding to the charge state deviation from a deviation-weight calibration curve; calculating a second weight value according to the second charge state estimation value at the previous moment, obtaining a target weight value based on the first weight value and the second weight value, and performing adaptive estimation on the weighted charge state estimation value at the previous moment based on the target weight value and the first charge state estimation value at the current moment, and obtaining a weighted state-of-charge estimation value at the current moment. The SOC estimation values obtained by different SOC estimation modes are subjected to weighted fusion, and the SOC estimation value obtained by a single estimation mode can be subjected to adaptive correction, so that the corrected SOC estimation value is close to the true SOC value of the battery.
本发明提供一种电池荷电状态自适应加权估计方法及装置、一种车辆,包括:获取第一荷电状态估计值和第二荷电状态估计值,计算当前时刻的第一荷电状态估计值与前一时刻的加权荷电状态估计值的绝对值偏差,从偏差‑权重标定曲线中寻找该荷电状态偏差对应的第一权重值;根据前一时刻的第二荷电状态估计值计算第二权重值,并基于第一权重值和第二权重值得到目标权重值,再基于目标权重值、当前时刻的第一荷电状态估计值,对前一时刻的加权荷电状态估计值进行自适应估计,得到当前时刻的加权荷电状态估计值。本发明对不同SOC估计方式得到的SOC估计值进行加权融合,可以对单一估计方式得到的SOC估计值进行自适应修正,使修正后的SOC估计值接近电池SOC真实值。
Battery charge state adaptive weighted estimation method and device, and vehicle
一种电池荷电状态自适应加权估计方法及装置、一种车辆
2024-10-08
Patent
Electronic Resource
Chinese
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