The embodiment of the invention provides a multi-power-supply energy management strategy and system, and relates to the technical field of vehicle energy management. The management strategy comprises the steps of obtaining vehicle demand power; processing the vehicle demand power by adopting a wavelet transform algorithm to obtain a high-frequency power signal and a low-frequency power signal; determining the output power of the fuel cell according to the low-frequency power signal; determining required power of a lithium battery and a super-capacitor system according to the required power of the vehicle and the output power of the fuel cell; and dividing the required power of the lithium battery and the super-capacitor system by adopting a finite-state machine to obtain the output power of the lithium battery and the output power of the super-capacitor. According to the management strategy and the system, an upper layer adopts a wavelet transform algorithm to decompose vehicle required power, a fuel cell provides low-frequency power required by the vehicle for a long time, and a lower layer adopts a finite-state machine method to distribute a lithium battery and a super capacitor, so that effective management and control of the whole energy storage system are realized; and the advantages of the three power supplies are fully exerted.
本发明实施例提供一种多电源能量管理策略及系统,涉及车辆能量管理技术领域。管理策略包括:获取车辆需求功率;采用小波变换算法对车辆需求功率进行处理,获得高频功率信号和低频功率信号;根据低频功率信号确定燃料电池输出功率;根据车辆需求功率和燃料电池输出功率确定锂电池和超级电容系统需求功率;采用有限状态机对所述锂电池和超级电容系统需求功率进行划分,获得锂电池输出功率和超级电容输出功率。该管理策略及系统上层采用小波变换算法分解车辆需求功率,由燃料电池提供车辆长期需求的低频功率,下层则采用有限状态机方法来进行锂电池和超级电容的分配,实现对整个能量存储系统的有效管理和控制,充分发挥了三种电源的优势。
Multi-power-supply energy management strategy and system
多电源能量管理策略及系统
2024-10-15
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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