Regeneration control device of hybrid electric vehicle
First Claim
1. A hybrid electric vehicle, comprising:
- a generator rotated by a driving force of an engine to thereby generate power;
a battery to which the power generated by said generator is charged;
a motor for generating a driving force for a vehicle by the power supplied from said battery and regenerating energy by using rotational power from driving wheels to generate power and charge said battery when said vehicle is being braked;
an actual charge level sensing device for sensing an actual charge level of said battery;
a chargeable power setting device for setting chargeable power in accordance with a sensed value of said actual charge level sensing device;
a deceleration instruction device for instructing said vehicle to decelerate;
a deceleration torque sensing device for sensing a deceleration torque required by said deceleration instruction device;
a regenerated power computing unit for setting regenerated power to be regenerated by said motor according to a sensed value of said deceleration torque sensing device; and
a control device for supplying the power generated by said motor to said generator to thereby drive said generator to run said engine without supply of fuel when chargeable power set by said chargeable power setting device is less than the regenerated power computed by said regenerated power computing unit while said motor is regenerating the energy.
3 Assignments
0 Petitions
Accused Products
Abstract
A regeneration control device of a hybrid electric vehicle can sufficiently charge a battery with power regenerated as a result of the regenerative braking and effectively perform the regenerative braking, and which can also ease the burden of a friction brake. If chargeable power set by a chargeable power setting device according to an actual level of the battery becomes lower than regenerated power computed by a regenerated power computing unit during the regenerating operation of a motor, the power regenerated by the motor is supplied to a generator. This drives the generator to cause an engine to run an engine brake without the supply of fuel.
27 Citations
8 Claims
-
1. A hybrid electric vehicle, comprising:
-
a generator rotated by a driving force of an engine to thereby generate power;
a battery to which the power generated by said generator is charged;
a motor for generating a driving force for a vehicle by the power supplied from said battery and regenerating energy by using rotational power from driving wheels to generate power and charge said battery when said vehicle is being braked;
an actual charge level sensing device for sensing an actual charge level of said battery;
a chargeable power setting device for setting chargeable power in accordance with a sensed value of said actual charge level sensing device;
a deceleration instruction device for instructing said vehicle to decelerate;
a deceleration torque sensing device for sensing a deceleration torque required by said deceleration instruction device;
a regenerated power computing unit for setting regenerated power to be regenerated by said motor according to a sensed value of said deceleration torque sensing device; and
a control device for supplying the power generated by said motor to said generator to thereby drive said generator to run said engine without supply of fuel when chargeable power set by said chargeable power setting device is less than the regenerated power computed by said regenerated power computing unit while said motor is regenerating the energy. - View Dependent Claims (2, 3, 4)
-
-
5. A method of recharging a battery in a hybrid electric vehicle having a battery, a generator activated by a driving force of an engine to charge the battery, a motor activated by power from the battery and regenerates energy by using rotational power from driving wheels of the vehicle to generate power and charge the battery when the vehicle is being braked, comprising:
-
detecting an actual charge level of the battery;
setting chargeable power in accordance with the detected actual charge level of the battery;
instructing the vehicle to decelerate;
detecting a deceleration torque required in said instructing step;
setting regenerated power to be regenerated by the motor according to the detected deceleration torque; and
supplying power generated by the motor to the generator to thereby drive the generator to run the engine without supplying fuel when the set chargeable power is less than the set regenerated power while the motor is regenerating the energy. - View Dependent Claims (6, 7, 8)
-
Specification