A fuel cell DCDC control method and a controller are applied to the field of fuel cells, and the method comprises the following steps: predicting the power variation of an electric vehicle in a preset time period; determining a traction power curve graph required by the electric vehicle in a preset time period according to the power variation; determining the optimal output power corresponding to the maximum operation efficiency of the fuel cell according to a preset efficiency curve graph of the fuel cell; controlling the optimal output power of the fuel cell to be unchanged, and comparing the traction power with the optimal output power; if the traction power is larger than the optimal output power, the DCDC converter is controlled to extract compensation output power from the preset lithium battery so that the power value output to the electric vehicle can reach the traction power; if the traction power is smaller than or equal to the optimal output power, the duty ratio of the DCDC converter is adjusted. The method has the effect of dynamically responding and optimizing the real-time running state of the vehicle while ensuring that the fuel cell is in the optimal working state.
一种燃料电池DCDC控制方法和控制器,应用于燃料电池领域,该方法包括预测电动车在预设时段内的动力变化量;根据动力变化量确定电动车在预设时段内所需的牵引力功率曲线图;根据燃料电池的预设效率曲线图确定燃料电池的最大运行效率对应的最佳输出功率;控制燃料电池的最佳输出功率不变,比较牵引力功率与最佳输出功率的大小;若牵引力功率大于最佳输出功率,控制DCDC转换器从预设锂电池中提取补偿输出功率使得向电动车输出的功率值达到牵引力功率;若牵引力功率小于或等于最佳输出功率,调整DCDC转换器的占空比。本申请具有在保证燃料电池处于最佳工作状态的同时实现对车辆实时行驶状态的动态响应和优化的效果。
Fuel cell DCDC control method and controller
一种燃料电池DCDC控制方法和控制器
2024-05-10
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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