Abstract: A bank angle detection device for a motorcycle includes a bank angle estimator configured to estimate a moving body bank angle ?b and a correcting section configured to estimate a vehicle body bank angle ?f. The bank angle estimator estimates the moving body bank angle ?b that is a gradient of a moving body axial line A1, on the basis of a balance state where a centrifugal force CF acting on a moving body and a gravitational force GF acting on the moving body during cornering are in balance with each other. The correcting section corrects the moving body bank angle ?b on the basis of an inertia force about a longitudinal axis acting on a vehicle body, so as to estimate the vehicle body bank angle ?f that is a gradient of a center of gravity G of the vehicle body with respect to a vertical line.

Abstract: An electric vehicle according to the present invention includes: an electric motor configured to generate driving force to rotate left and right driving wheels; a battery as a power supply for the electric motor; an inverter configured to supply AC power to the electric motor; a differential device arranged between the left and right driving wheels; and a driving power transmission configured to transmit the driving force, generated by the electric motor, to the differential device. The differential device, the driving power transmission, and the electric motor are lined up linearly in a vehicle width direction. The electric motor is located at a first vehicle width direction side of a vehicle width center of the vehicle. The inverter is located at the first vehicle width direction side of the vehicle width center of the vehicle.

Abstract: A ground leakage detector for detecting a ground leakage in an electric vehicle including a battery, and a charging connector which is electrically connectable to a terminal member formed at one end of an outside electric wire through which electric power is supplied from outside to the battery, includes a connector connection section electrically connectable to the charging connector; a contactor configured to contact a vehicle body ground location in the electric vehicle; and a detecting circuit for detecting whether or not there is a ground leakage from the battery to the vehicle body ground location, based on a current flowing between the connector connection section and the contactor.

Abstract: An air supply mechanism of an electric vehicle includes: a first air flowing pipe; a second air flowing pipe; and an air blower configured to generate a flow of air such that the air flows through a first air inlet into a first air flowing pipe and is discharged through a first air outlet to electric component accommodating spaces, and the air in the electric component accommodating spaces flows through a second air inlet into a second air flowing pipe and is discharged through a second air outlet to a space outside a vehicle body. The first air inlet and the second air outlet are arranged higher than a first battery, a second battery, and an inverter serving as “electric components.

Abstract: A deceleration control system in a vehicle comprises; a deceleration start detector; a memory for storing a normal state rule and a deceleration state rule to control a driving power, and a controller for controlling the driving power; wherein in the deceleration state rule, the driving power is changed based on the detection by a driving state detector, and a driving power decided in accordance with the deceleration state rule is greater than a driving power decided in accordance with the normal state rule according to the same driving state: and wherein the controller switches the normal state rule to the deceleration state rule and controls the driving power in accordance with the deceleration state rule, based on the detection by the driving state detector, when the deceleration start detector detects that the deceleration has started.

Abstract: A straddle electric vehicle comprises a battery case for storing a battery unit; an inverter for converting DC power stored in the battery unit into AC power; a plurality of electric components connected to the battery unit and the inverter; and an electric motor for generating driving power for rotating a drive wheel, by the AC power generated by conversion in the inverter; wherein the plurality of electric components are stored in the battery case such that the electric components are placed above the battery unit.

Abstract: A regenerative brake control system of an electric motorcycle includes an electric motor, sensors which detect the vehicle states, and a control unit which sets a target torque based on the vehicle state when the control unit determines that a regeneration condition is satisfied based on the detected vehicle state, and the control unit suppresses a regenerative braking amount more when it is detected that the electric motorcycle is turning than when it is detected that the electric motorcycle is not turning.

Abstract: A control section is configured to perform a high-degree abnormal state control in which the control section terminates a specified shifting step for shifting a vehicle to an operable state and shifts the vehicle to an operation inhibiting state when an operation checking section determines that the vehicle is in a predetermined high-degree abnormal state, and the control section is configured to perform a low-degree abnormal state control different from a normal state control without terminating the specified shifting step, when the operation checking section determines that the vehicle is in a predetermined low-degree abnormal state different from the predetermined high-degree abnormal state, and perform the normal state control, when the operation checking section determines that the vehicle has been restored from the predetermined low-degree abnormal state to a state in which the vehicle is operable normally.

Abstract: An electric vehicle comprises a driving motor which generates heat during an operation of the driving motor; a driving power transmission mechanism which transmits driving power of the driving motor to a rear wheel (drive wheel); an oil pan (first reservoir section) which is placed below the driving motor and reserves oil (coolant) therein; an oil reservoir (second reservoir section) which is placed above the driving motor and reserves the oil (coolant) therein; a fluid passage which causes the oil pan and the oil reservoir to be in communication with each other; and a pump which supplies the oil (coolant) from the oil pan to the oil reservoir through the fluid passage, and the oil reservoir includes a first drop hole through which the oil (coolant) is dropped toward the driving motor by a gravitational force.

Abstract: A power device of an electric vehicle according to the present invention includes an electricity storage device which stores electricity of direct current, an inverter device which generates alternating current from the direct current stored in the electricity storage device, multiple electric motors which receive supply of electricity of the alternating current generated by the inverter device and generate a traveling driving force, and a driving force transmission mechanism which transmits rotation of each output shaft portion of the multiple electric motors to a driving wheel. The driving force transmission mechanism is configured such that rotation of each output shaft portion is transmitted to the driving wheel with an equal speed change ratio, and the multiple electric motors are connected to a single inverter device, and configured to receive electricity supply of the alternating current generated by the single inverter device.

Abstract: An electric vehicle comprises a driving power device which drives a wheel and includes a heat generating component which includes a heat generating component and generates heat during an operation thereof; a mechanical pump which is mechanically driven by the driving motor and supplies a coolant in an amount proportional to a rotational speed of the driving motor to the heat generating component; an electric pump which supplies the coolant to the heat generating component; and an electric pump control section which controls an operation of the electric pump; wherein the electric pump control section causes the electric pump to be driven upon determining that a required cooling capability value is larger than a mechanical cooling capability value of the mechanical pump, and stops causing the electric pump to be driven when the required cooling capability value is smaller than the mechanical cooling capability value.

Abstract: A regenerative brake control system of an electric motorcycle includes an electric motor, a regeneration adjustment lever, sensors which detect vehicle states, respectively, and a control unit which sets reference regenerative torque according to the vehicle state, and the control unit calculates target torque obtained by compensating the reference regenerative torque based on the detected value of a regeneration amount sensor which detects the operation amount of a regeneration adjustment lever and controls the electric motor such that the electric motor generates regenerative torque.

Abstract: A vehicle comprises an engine including a plurality of combustion chambers; a plurality of throttle valves provided in the plurality of combustion chambers corresponding to the plurality of combustion chambers, respectively, to independently adjust flow rates of intake air flowing into the combustion chambers, respectively; two or more driving mechanisms for electrically driving the plurality of throttle valves divided into two or more groups in such a manner that each of the driving mechanisms drives the throttle valve in a corresponding group of the groups; and a throttle control device for controlling the driving mechanisms based on an amount of throttle operation information input by a rider and a predetermined vehicle state, wherein the throttle control device provides throttle opening rate commands which are made different between the groups, to the driving mechanisms, respectively, when a predetermined output adjustment condition is met.

Abstract: An electric motorcycle includes an electric driving unit including an electric motor and a power transmission mechanism, and is configured to halt supplying of electric power to the electric motor for at least a period in the stopped state. A starting assist method is executed in the electric motorcycle. The starting assist method comprises the steps of activating the electric motor and rotating a rotor by itself to store rotation energy in the rotor, keeping the rotation energy stored in the rotor in the step of storing the rotation energy, in a stopped state of the electric motorcycle, and transmitting the rotation energy of the rotor kept in the step of keeping the rotation energy to the rear wheel as starting assist power.

Abstract: A straddle electric vehicle which rotates a drive wheel by driving power generated in an electric motor, comprises a battery unit which is an electric power supply; and a battery case for storing the battery unit; wherein the battery case includes a pair of first case member and second case member which are joined together such that the first case member and the second case member are horizontally separable from each other, and a parting line of the first case member and the second case member extends above a bottom wall of the battery case; and wherein the first case member and the second case member include a first flange section and a second flange section, respectively, which define the parting line, and are separably joined to each other in a state in which the first flange section and the second flange section are engaged with each other.

Abstract: In a saddle-type electric vehicle such as an electric motorcycle, a motor shaft of a driving electric motor extends in a rightward and leftward direction and one end portion in the rightward and leftward direction is coupled to a transmission, a transmission accommodating section of a motor unit case is fastened at right and left sides to a vehicle body frame, and a motor accommodating section is coupled to the transmission accommodating section at one end portion in the rightward and leftward direction. Thus, misalignment of bearings of the motor shaft due to deflection of the motor unit case can be suppressed while reducing a weight of the motor unit case.

Abstract: A saddle type electric vehicle which travels by using an electric motor as a power source includes: a power supply unit including a power supply for the electric motor; and a vehicle body frame defining an accommodating space located between front and rear wheels and accommodating the power supply unit. The vehicle body frame is configured such that the power supply unit is attachable to and detachable from the accommodating space in a vehicle width direction.

Abstract: A method of diagnosing an electric vehicle incorporating an electric component, comprises detecting a physical load applied to a vehicle body, which is other than an electric characteristic of the electric component; and changing a diagnostic operation for the electric component based on the electric characteristic of the electric component such that the diagnostic operation is performed based on the detected physical load applied to the vehicle body.

Abstract: A straddle electric vehicle comprises a battery case accommodating a battery which is an electric power supply for an electric motor; and an air box attached to an upper portion of the battery case, and the air box includes a ram air inlet through which ram air flows into the air box, and a ram air supply port through which the air is supplied from inside the air box to the battery case.

Abstract: A straddle electric vehicle includes a battery case which accommodates a battery as an electric power supply for an electric motor, and is placed between a front wheel and a rear wheel; and a swing arm pivotably coupled at its front end portion to a vehicle body frame such that the swing arm supports the rear wheel by its rear end portion; wherein the electric motor is placed rearward relative to the battery case and forward relative to the rear wheel.