The invention relates to a fuel cell and lithium battery hybrid power system cooperative recession control method and system, and relates to the field of fuel cells and lithium batteries, and the method comprises the steps: obtaining vehicle speed data, fuel cell data and lithium battery data of a vehicle; determining a fuel cell SOH change rate, a lithium battery SOH change rate and an SOH difference value according to the fuel cell data and the lithium battery data; determining a power demand undertaking result of the energy source on the vehicle according to the vehicle speed data; performing wavelet analysis on the power demand of the vehicle to obtain a frequency division demand signal; parameters of wavelet analysis comprise a wavelet order and a decomposition order; according to the frequency division demand signal, the power demand bearing result, the SOH change rate of the fuel battery, the SOH change rate of the lithium battery and the SOH difference value, the power bearing results of the fuel battery, the lithium battery and the super capacitor are adjusted to achieve collaborative recession of a vehicle power system, and the service life of the fuel battery and the service life of the lithium battery are prolonged by making the recession degrees of the fuel battery and the lithium battery consistent.
本发明涉及一种燃料电池和锂电池混动系统协同衰退控制方法及系统,涉及燃料电池和锂电池领域,方法包括:获取车辆的车速数据、燃料电池数据和锂电池数据;根据燃料电池数据和锂电池数据确定燃料电池SOH变化率、锂电池SOH变化率和SOH差值;根据车速数据确定能量源对车辆的功率需求承担结果;对车辆的功率需求进行小波分析得到分频需求信号;小波分析的参数包括小波阶数和分解阶数;根据分频需求信号、功率需求承担结果、燃料电池SOH变化率、锂电池SOH变化率和SOH差值对燃料电池、锂电池和超级电容的功率承担结果进行调整以实现车辆动力系统协同衰退,通过使燃料电池和锂电池衰退程度一致实现延长两种电池寿命。
Cooperative decline control method and system for fuel cell and lithium battery hybrid power system
一种燃料电池和锂电池混动系统协同衰退控制方法及系统
2022-04-22
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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