Abstract: There is provided a battery control apparatus that, when the battery temperature is low, repeats the charge and discharge of a battery on a short cycle such that the state of charge (SOC) of the battery lies in the range of 30 to 40% if the present SOC is less than 50%, and repeats the charge and discharge of the battery on a short cycle such that the SOC lies in the range of 50 to 60% if the present SOC is equal to or greater than 50%, thus increasing the temperature of the battery. Therefore, it is possible to increase the battery temperature in an efficient manner, and to prevent the available input-output power of the battery from being reduced due to a decrease in the battery temperature.

Abstract: There is provided a battery control apparatus that, when the battery temperature is low, repeats the charge and discharge of a battery on a short cycle such that the state of charge (SOC) of the battery lies in the range of 30 to 40% if the present SOC is less than 50%, and repeats the charge and discharge of the battery on a short cycle such that the SOC lies in the range of 50 to 60% if the present SOC is equal to or greater than 50%, thus increasing the temperature of the battery. Therefore, it is possible to increase the battery temperature in an efficient manner, and to prevent the available input-output power of the battery from being reduced due to a decrease in the battery temperature.

Abstract: A regenerative braking control system for an electric vehicle which can be driven by operating an electric motor with electric energy supplied from an electric energy supply source mounted on the vehicle. A control unit (7) is designed so that regenerative braking force of the electric motor (2) is controlled in accordance with an inclination detected by an inclination detecting unit (28). This has made it possible to provide the electric vehicle with improved drivability and running performance.

Abstract: According to the present invention, the operating amount of the brake is detected, and the target value of the regenerative torque is set in accordance with the detected operating amount. In the meantime, the change in the detected operating amount along with time is detected, and the rise speed of the regenerative torque is set in accordance with the detected change along with time. The regenerative torque is controlled in accordance with the set target value of the regenerative torque and the set rise speed.

Abstract: According to the present invention, the operating amount of the brake is detected, and the target value of the regenerative torque is set in accordance with the detected operating amount. In the meantime, the change in the detected operating amount along with time is detected, and the rise speed of the regenerative torque is set in accordance with the detected change along with time. The regenerative torque is controlled in accordance with the set target value of the regenerative torque and the set rise speed.

Abstract: A braking control system for an electric automobile combines the use of mechanical braking and regenerative braking by a motor. Namely, a braking control system for the electrical automobile, which permits the combined use of regenerative braking and mechanical braking, is provided with target braking force setting unit (9) for setting a target braking force on the basis of a brake pedal stroke, regeneration control system (4A,5A) for setting a target regenerative braking force on the basis of the brake pedal stroke and then controlling regenerative braking by the motor in accordance with the target regenerative braking force, and mechanical braking control unit (24) for controlling operation of a mechanical brake system (B) in accordance with a difference between said target braking force and an actual braking force determined based on a detected deceleration of a vehicle.

Abstract: This invention relates to a braking control system for an electric automobile that runs by driving wheels with an electric motor. The braking control system controls braking of a vehicle through regenerative braking by the motor. Upon application of brakes, the braking control system can make combined use of mechanical braking by a mechanical brake system (11) and regenerative braking by a drive motor (2). The braking control system is designed to control regenerative braking of the motor (2) by a regenerative braking control device (12) so that greater braking force is produced when a failure in the mechanical brake system (11) is detected by a failure detection device (22) than when the mechanical brake system (11) is detected to be normal.

Abstract: A fuel use limiter-equipped hybrid electric car has a battery unit chargeable by an external charger, an electric drive motor capable of driving wheels by electric power from the battery unit, an internal combustion engine for driving a generator to supply electric power to the electric drive motor, and a controller for controlling operations of the electric drive motor and internal combustion engine. The hybrid electric car is further provided with a fuel-use-state detector for detecting a change in a parameter, which change corresponds to a quantity of fuel used by the internal combustion engine since charging of the battery unit by the external charger. The controller limits at least one of an output of the electric drive motor and that of internal combustion engine when from results of a detection by the fuel-use-state detector, the change in the parameter is found to have reached a predetermined value.

Abstract: A hybrid electric vehicle is equipped with a combustion engine for driving a generator or a combustion engine for driving vehicle wheels. The hybrid electric vehicle has a battery unit, an electric drive motor, the combustion engine directly or indirectly usable for driving wheels, and a controller for controlling operations of the electric drive motor and the combustion engine. The hybrid electric vehicle is further provided with a microcomputer for determining whether or not the battery unit meets a predetermined specification. When the battery unit is determined as failing to meet the predetermined specification by the microcomputer, the controller limits an output of the electric drive motor or the combustion engine.

Abstract: A remaining capacity meter is provided for an electric vehicle battery. This meter is suited for use in the detection of a remaining capacity of the electric vehicle battery.