Method and device for managing hybrid energy storage system of vehicle

The invention relates to the technical field of energy storage systems, and provides a management method and device for a hybrid energy storage system of a vehicle, and the method comprises the steps: determining a control parameter corresponding to a current driving mode according to the current driving mode of the vehicle; inputting the control parameter and a current load power demand signal of the vehicle into a Fourier transform filter to obtain a low-frequency component of the current load power demand signal; obtaining a high-frequency component of the current load power demand signal according to the current load power demand signal and the low-frequency component; and according to the low-frequency component and the high-frequency component, the output power of a power battery in the hybrid energy storage system of the vehicle and the output power of a super capacitor in the hybrid energy storage system are determined. According to the management method for the hybrid energy storage system of the veh