Control device of a hybrid vehicle

摘要

When a vehicle is decelerating, a controller of a motor-generator (2) computes a target charging current according to a charge state of a high voltage battery by a target charging current computing unit (23), and limits this current by a first limiter (24) having a limiter value. An electrical load current supplied to vehicle-mounted electrical loads is computed by an electrical load current detecting unit (27). A target generation current produced by the motor-generator (2) is computed by adding the target charging current and electrical load current, by a target generation current detecting unit (28, 30). This computed value is limited by a second limiter (31) having a limiter value which varies according to an engine rotation speed, ON/OFF state of an air-conditioner and speed ratio. When the vehicle is decelerating, the motor-generator (2) is made to function as a generator driven by recovery energy, the high voltage battery and a low voltage battery for the vehicle-mounted electrical loads are charged without overcharging, and excessive vehicle deceleration is prevented.