Patent ID: 8234027

Claim:
A charge-discharge management apparatus for a battery of a hybrid vehicle, which uses an internal combustion engine driven by fuel combustion and a motor driven by the battery as a power source for running, the apparatus comprising: a scheduling control unit configured to (i) determine a schedule about whether or not to drive the hybrid vehicle using the motor and to charge the battery along an estimated route to a destination and (ii) estimate transition of a remaining quantity of the battery along the estimated route based on the schedule; a scheduled running control unit configured, when the hybrid vehicle runs along the estimated route, to perform a control over whether or not to drive the hybrid vehicle using the motor and whether or not to charge the battery in accordance with the schedule; a re-scheduling control unit configured to operate to cause the scheduling control unit to operate again when the hybrid vehicle runs along the estimated route, based on a remaining battery quantity difference being greater than or equal to a reference quantity value, the remaining battery quantity difference being a difference in a remaining quantity of the battery between a detected quantity at a present position of the hybrid vehicle and a scheduled quantity according to the schedule at the present position; and a stop control unit configured to stop an operation of the scheduled running control unit based on the re-scheduling control unit having operated a number of times greater than or equal to a reference times value while the hybrid vehicle travels from a start point to the present position along the estimated route; wherein after the stop control unit stops the operation of the scheduled running control unit, an autonomous control mode is executed, the autonomous control mode controlling to maintain the remaining quantity of the battery at the reference quantity value regardless of whether the hybrid vehicle runs along the estimated route.