极片烘干烘箱温度控制系统设计

Design of Temperature Control System for Electrode Drying Oven

摘要: 锂电池极片烘干烘箱的温度模型具有大惯性、非线性与大滞后等特性，采用常规控制方法难以满足烘箱温度的控制要求，因此有必要寻求更优异的控制策略。本文从烘箱温度模型辨识、控制器设计以及控制器参数整定三个方面，对烘箱温度控制系统进行了设计。实际应用表明：在升温阶段，控制系统控制加热装置以最大加热功率加热，温度超调量小于1℃；进入稳定阶段后，温度控制精度可达±0.5℃。该系统具有良好的鲁棒性与抗扰性能，具备较高的工程应用价值。

Abstract: The temperature model of the oven for drying lithium battery electrodes features characteristics like large inertia, nonlinearity, and significant time delay. Conventional control methods are hardly able to meet the temperature control requirements of the oven; therefore, it is necessary to explore more excellent control strategies. This paper designs the oven temperature control system from three aspects: oven temperature model identification, controller design, and controller parameter tuning. Practical application results show that during the temperature rise stage, the control system regulates the heating device to operate at maximum heating power, with a temperature overshoot of less than 1˚C; after entering the stable stage, the temperature control accuracy can reach ±0.5˚C. The system has good robustness and anti-disturbance performance, and possesses high engineering application value.