Hydrogen fuel heat preservation system and low-temperature starting and shutdown control method thereof

The invention relates to a hydrogen fuel heat preservation system and a low-temperature starting and shutdown control method thereof.The hydrogen fuel heat preservation system comprises a hydrogen fuel electric pile, the hydrogen fuel electric pile is communicated with a hydrogen path unit, the hydrogen fuel electric pile is communicated with an air path unit, and the hydrogen fuel electric pile is communicated with a water path unit; the hydrogen path unit, the air path unit and the water path unit are electrically connected with the FCU controller, and the hydrogen fuel stack is connected with the DCDC converter. Rapid low-temperature starting is achieved, extra consumption of electric energy and hydrogen energy is reduced, the starting time is saved, and the efficiency of the system is improved. 本发明涉及一种氢燃料保温系统及其低温启动关机的控制方法，包括氢燃料电堆，所述氢燃料电堆与氢气路单元相连通，所述氢燃料电堆与空气路单元相连通，所述氢燃料电堆与水路单元相连通，所述氢气路单元、空气路单元和水路单元与FCU控制器相电联，所述氢燃料电堆与DCDC转换器相连。本发明实现快速低温启动，减少了电能和氢能的额外消耗，节省了启动时间，提高了系统的效率。