Patent ID: 8880252

Claim:
An electricity storage control device for a hybrid vehicle, the hybrid vehicle including: an internal combustion engine; a battery that is charged by a power generator driven by the internal combustion engine; and a motor that is driven upon receiving an electric power from the battery, the hybrid vehicle conducting travel in an EV mode for traveling with only the motor, the electricity storage control device comprising: a planned traveling distance setting unit that sets a planned traveling distance in the EV mode in advance; an EV switch that sets a travel mode of the hybrid vehicle to the EV mode by operation of a vehicle occupant; a residual control unit that: calculates a traveling enable distance in the EV mode according to an electricity storage state of the battery and that, when the planned traveling distance is longer than the traveling enable distance, operates the internal combustion engine to cause the power generator to charge the battery so that amount of storage in the battery reaches amount of storage corresponding to the planned traveling distance, and after the amount of storage corresponding to the planned traveling distance is ensured in the battery, makes the EV switch effective; and an annunciation unit that, while the EV switch is effective, notifies the vehicle occupant that the amount of storage corresponding to the planned traveling distance is ensured in the battery, wherein the residual control unit calculates a unit electric energy consumed per a unit travel distance in the travel in the EV mode and calculates the traveling enable distance according to the electricity storage state of the battery based on at least one of the history of past travel output and the history of a travel distance in the EV mode.