BATTERY MANAGEMENT SYSTEM

PROBLEM TO BE SOLVED: To accurately control a battery remaining amount at a destination to a target battery remaining amount by appropriately controlling drive energy of a vehicle including a motor driven by power supplied from a battery as a power source.SOLUTION: In a vehicle 1, power consumption control for controlling power consumption of a battery on the basis of a target battery remaining amount set by a user and detection or storage of a deterioration-related parameter relating to deterioration of the battery are performed. In a server 2, a deterioration parameter coefficient that represents the degree of the effect of the deterioration-related parameter on the deterioration of the battery is calculated. In the vehicle 1, the power consumption control of the battery is executed in accordance with the deterioration parameter coefficient and the deterioration-related parameter. The degree of actual battery deterioration is calculated on the basis of the actual battery remaining amount at a point when the vehicle 1 reaches a destination. A table for calculating the deterioration parameter coefficient is corrected in accordance with the degree of actual battery deterioration.