Control device and control method for vehicle

A control method for a vehicle, wherein the vehicle includes:

• a fuel cell;
• a motor-generator coupled to the fuel cell as a driving source;
• a power unit configured to accept generated power of the fuel cell and the motor-generator;
• and
• a transmission disposed on a power transmission path between the motor-generator and a driving wheel, wherein
• the control method for the vehicle comprises:
• a motor-generator control step of performing a power control on the motor-generator based on a driver request torque;
• and
• a generated power control step of controlling the generated power of the fuel cell based on a load of the fuel cell including the motor-generator, wherein:
• the motor-generator control step comprises:
• performing a shifting power control during an upshift of the transmission, with setting a target regenerative torque for decreasing a rotation speed of the motor-generator in the shifting power control;
• calculating a limit torque of the motor-generator during the shifting power control based on an actual generated power of the fuel cell per unit time and an acceptable power of the power unit per unit time, and
• performing a power control on the motor-generator, with limiting the target regenerative torque during an inertia phase with the limit torque of the motor-generator in the power control.

A control device for a vehicle, wherein

• the vehicle includes:
• a fuel cell;
• a motor-generator coupled to the fuel cell as a driving source;
• a power unit configured to accept generated power of the fuel cell and the motor-generator;
• and
• a transmission disposed on a power transmission path between the motor-generator and a driving wheel, wherein
• the control device for the vehicle comprises:
• a motor-generator control unit configured to perform a power control on the motor-generator based on a driver request torque;
• and
• a generated power control unit configured to control the generated power of the fuel cell based on a load of the fuel cell including the motor-generator, wherein:
• the motor-generator control unit performs a shifting power control during an upshift of the transmission, setting a target regenerative torque for decreasing a rotation speed of the motor-generator in the shifting power control,
• the motor-generator control unit calculates a limit torque of the motor-generator during the shifting power control based on an actual generated power of the fuel cell per unit time and an acceptable power of the power unit per unit time,
• the motor-generator control unit performs a power control on the motor-generator, limiting the target regenerative torque during an inertia phase with the limit torque of the motor-generator in the power control,
• the generated power control unit controls the generated power of the fuel cell or halts the power generation of the fuel cell during the inertia phase based on a vehicle speed of the vehicle, and
• the control device for the vehicle further comprises:
• an upshift request determining unit configured to determine whether or not an upshift request of the transmission exists based on an operating state of the vehicle, and
• an upshift inhibiting unit configured to inhibit the upshift of the transmission when a power absorbable for the power unit is equal to or less than a predetermined value.