The invention discloses a multi-working-condition energy management strategy for an extended-range hybrid electric vehicle. The multi-working-condition energy management strategy comprises a control mode switching module, a power prediction switching module and an optimization control module. The control mode switching module performs switching according to the SOC value of the power battery, the single voltage and the temperature; the power prediction module predicts the vehicle speed and acceleration by adopting Bayesian estimation; and the optimization control module performs optimization according to the predicted power value by taking the minimum equivalent fuel consumption and the local balance of the state of charge of the power battery as targets so as to realize a global optimization control strategy of the extended-range vehicle for switching between a thermostat type control scheme and a power following type control scheme. According to the strategy, on the basis of global optimization control, a mode that thermostat control and power following type control can be switched is achieved, and a future power prediction value is obtained by establishing multi-step prediction calculation; power is distributed to an engine, and output and input of a power battery are kept in a balanced state.
本发明公开了一种用于增程式混动车的多工况能源管理策略,包括控制模式切换模块、功率预测切换模块及优化控制模块;控制模式切换模块依据动力电池SOC值、单体电压以及温度进行切换;功率预测模块采用贝叶斯估计对车辆速度及加速度进行预测;优化控制模块根据预测得到的功率值以等效燃油消耗最小与动力电池荷电状态局部平衡为目标进行优化,以实现增程式车辆在恒温器型控制方案与功率跟随型控制方案切换的全局优化控制策略。该策略基于全局优化控制,达到一种恒温器控制与功率跟随型控制可切换的模式,通过建立多步预测计算得到未来的功率预测值;将功率分配给发动机,让动力电池的输出和输入维持在一个平衡的状态。
Multi-working-condition energy management strategy for extended-range hybrid electric vehicle
一种用于增程式混动车的多工况能源管理策略
24.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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