Energy management method and device, equipment and storage medium

The invention provides an energy management method, device and equipment and a storage medium, and the method comprises the steps: determining the total torque demand of a gearbox according to the vehicle speed corresponding to the current moment in a vehicle driving road spectrum, and estimating different engine torques meeting the total torque; determining the fuel consumption of each engine corresponding to different engine torques under different gears by using the value function; according to the engine oil consumption corresponding to each engine torque, the current co-state variable and the current state of the battery, calculating each static cost corresponding to different engine torques under different gears; real-time gear selection and energy distribution are carried out according to the static cost and the preset switching cost; the optimal calculation of the initial gear can be stripped from the value function, a single optimization problem of the value function is formed, the calculation effici