The invention discloses an electric automobile energy management system and method and an automobile. The system comprises a fuel cell module, a first power cell module, a second power cell module and a direct-current conversion control unit. The direct-current conversion control unit is used for monitoring the working condition of the whole automobile load, the output power state of the fuel cell module and the electric quantity states of the first power cell module and the second power cell module in real time and executing corresponding control strategies. Concretely when it is monitored that the electric quantity of the first power cell module is lower than the electric quantity of the second power cell module, and the electric quantity difference value between the second power battery module and the first power battery module is greater than a preset value, the first power battery module is controlled to absorb the output power when the fuel battery module is in the lowest output power state, and the second power battery module is controlled to provide instantaneous power output for the whole automobile load when the output power of the fuel battery module cannot meet the power output requirement of the whole automobile load. The energy efficiency of the whole automobile is improved.
本发明公开了一种电动汽车能量管理系统、方法及汽车,系统包括:燃料电池模组、第一动力电池模组、第二动力电池模组、直流变换控制单元;直流变换控制单元用于:实时监测整车负载的工况、燃料电池模组的输出功率状态、第一动力电池模组和第二动力电池模组的电量状态,并执行对应的控制策略,包括:当监测到第一动力电池模组的电量低于第二动力电池模组的电量,且第二动力电池模组与第一动力电池模组之间的电量差值大于预设值时:控制第一动力电池模组吸收燃料电池模组为最低输出功率状态的时的输出功率;控制第二动力电池模组在燃料电池模组的输出功率无法满足整车负载的功率输出需求时,为整车负载提供瞬时功率输出。实现提高整车能量效率。
Electric automobile energy management system and method and automobile
电动汽车能量管理系统、方法及汽车
2021-04-13
Patent
Elektronische Ressource
Chinesisch
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