VEHICLE AND ITS CONTROL METHOD

摘要

The charge-discharge power demand Pb* is set to the charging power Pcha, when the state of charge of the battery is less than the reference value S1 or when the state of charge of the battery is more than or equal to the reference value S1 and less than the reference value S2 while the vehicle power demand P* is less than reference value P1 (S140). The charge-discharge power demand Pb* is set to the discharging power Pdis, when the state of charge of the battery is more than or equal to the reference value S2 or when the state of charge of the battery is more than or equal to the reference value S1 and less than the reference value S2 and while the vehicle power demand P* is more than or equal to the reference value P2 (S150). The charge-discharge power demand Pb* is set without change in value to the last set the charge-discharge power demand Pb*, when the state of charge of the battery is more than or equal to the reference value S1 and less than the reference value S2 while the vehicle power demand P* is more than or equal to the reference value P1 and less than the reference value P2 (S160). The engine and the motor MG1 and MG2 are so controlled as the battery 50 is charged or discharged with the charge-discharge power demand Pb* and the vehicle is driven with vehicle power demand P* (S170 to S250).