The invention discloses an energy management method and a power system in the cold start process of a hydrogen fuel cell automobile. The energy management method comprises the following steps: heating a hydrogen fuel cell and a power cell; judging whether the hydrogen fuel cell meets a self cold start condition or not; if the hydrogen fuel cell meets the cold start condition of the hydrogen fuel cell, executing the steps that the whole vehicle is in a hydrogen fuel cell power following mode; judging whether the power battery cold meets a self cold start condition or not; and if the power battery cold in the hydrogen fuel cell power following mode meets the self cold start condition, executing the step of switching the whole vehicle from the hydrogen fuel cell following mode to the power battery power following mode. The energy management method has the advantages that a power system adopting the energy management method can be switched between a hydrogen fuel cell power following mode and a power cell power following mode, the requirements of various working conditions are met, meanwhile, the problem that a vehicle cannot be used in the temperature rising process of a power cell is solved, and the cold start time of the whole vehicle is shortened.
本发明公开了氢燃料电池汽车冷启动过程中的能量管理方法、动力系统,其能量管理方法包括以下步骤:使氢燃料电池和动力电池升温;判断氢燃料电池是否满足其自身冷启动条件;若氢燃料电池满足其自身冷启动条件,则执行步骤:整车为氢燃料电池功率跟随模式;判断动力电池冷是否满足其自身冷启动条件;若氢燃料电池功率跟随模式下的动力电池冷满足其自身冷启动条件,则执行步骤:整车由氢燃料电池跟随模式切换为动力电池功率跟随模式。本发明的优点为:采用该能量管理方法的动力系统可以在氢燃料电池功率跟随模式和动力电池功率跟随模式之间切换,满足各种工况的需求,同时避免了动力电池升温过程中车辆无法使用的问题,并缩短了整车的冷启动时间。
Energy management method and power system in cold start process of hydrogen fuel cell automobile
氢燃料电池汽车冷启动过程中的能量管理方法、动力系统
2022-11-08
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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