Electricity shortage early warning method and device

The invention relates to the technical field of storage batteries, in particular to an electricity shortage early warning method and device. Whether the vehicle is in a flameout state or not is judged, if the vehicle is in the flameout state, the TBOX acquires state information of a controller to obtain information data of voltage of a storage battery of the vehicle, the TBOX uploads the data to a background system, the background forms power shortage risk information through a certain power shortage algorithm strategy, and when power shortage occurs, a vehicle owner and a corresponding service station are notified, so that the vehicle owner is protected against power shortage. The driver is urged to contact with the service station to solve the problem of insufficient electricity, and the diver system triggers an intelligent electricity supplementing strategy at the same time to supplement electricity to the storage battery in time. The service life of the storage battery can be effectively prolonged through