Train energy management method, energy management controller and train

The invention discloses a train energy management method, an energy management controller and a train, and relates to the field of energy management.The train energy management method comprises the steps that the SOC interval in which the charging and discharging efficiency of a power battery reaches the preset efficiency is determined; before the vehicle runs, if the SOC value of the power battery is smaller than the maximum value of the SOC interval, the fuel cell is controlled to quickly charge the power battery to the maximum value of the SOC interval; when the vehicle is in a traction working condition, controlling the power battery and the fuel battery to supply power to the traction system and the auxiliary system simultaneously; and when the vehicle is in the constant-speed state, if the SOC value of the power battery is larger than the maximum value of the SOC interval, the power battery is controlled to supply power to the traction system and the auxiliary system. The charging and discharging effici