JP6808843B2 - Electric vehicle, electric vehicle control device and electric vehicle control method - Google Patents

Description

The present invention relates to an electric vehicle, an electric vehicle control device, and an electric vehicle control method.

Electric motorcycles powered by a motor are equipped with batteries such as a lithium battery that supplies electric power to drive the motor. By connecting the battery to a power source, the battery can be charged by the electric power supplied from the power source (see, for example, Japanese Patent Application Laid-Open No. 2011-063066).

In addition, the electric two-wheeled vehicle causes the motor to function as a generator when the rotation speed of the motor slows down, when the motor is running due to inertia, or when the battery power is not supplied to the motor, such as when running on a downhill. , The battery can be charged (that is, regenerative charging) by the electric power generated in the motor as the wheels rotate.

By the way, in an electric motorcycle having no clutch, the motor is not disconnected from the wheels even when the motorcycle is not running. Therefore, for example, when the wheels are rotated by hand with the stand upright, the motor may function as a generator to generate electricity as the wheels rotate.

As described above, when the battery is charged with the electric power supplied from the power source in the situation where the motor generates electricity, there is a possibility that excessive electric power is supplied to the battery from both the power source and the motor. Therefore, in the past, there was a risk that the battery could not be charged properly.

Therefore, the present invention is an electric vehicle, an electric vehicle control device, and an electric vehicle capable of appropriately charging the battery by avoiding the supply of excessive electric power to the battery from both the power source and the motor. It is an object of the present invention to provide a vehicle control method.

The electric vehicle according to one aspect of the present invention is
With a rechargeable battery
A motor generator that outputs torque for driving the wheels by the electric power supplied from the battery, or outputs electric power as the wheels rotate.
A charging unit that charges the battery with the power supplied from the power supply,
A rotation speed detection unit for detecting the rotation speed of the motor generator in a state of outputting the electric power,
It includes a control unit that charges the battery with the electric power output by the motor generator and controls the charging unit to charge the battery with the electric power supplied from the power source.
After the rotation speed is detected, the control unit waits for control to charge the battery with the electric power supplied from the power source until the detected rotation speed is equal to or less than the threshold speed for a threshold time. Then, when the state of being equal to or lower than the threshold speed continues for the threshold time, control is performed to charge the battery with the electric power supplied from the power source.

In addition, in the electric vehicle,
The state of outputting the electric power may be a state in which the stand of the vehicle is erected so that the wheels can be rotated by an external force and the wheels are separated from the ground.

In addition, in the electric vehicle,
An openable and closable storage unit for storing the battery,
A closed state detection unit for detecting the closed state of the storage unit is further provided.
Even if the control unit controls to charge the battery with the electric power supplied from the power source when the closed state is detected when the state of being equal to or lower than the threshold speed continues for the threshold time. Good.

In addition, in the electric vehicle,
The storage portion may be opened and closed by a vehicle seat.

In addition, in the electric vehicle,
The charging unit includes a charging plug connected to the power supply and an AC-DC converter that converts an AC voltage input from the power supply into a DC voltage via the charging plug.
The control unit may control the AC-DC converter to convert the AC voltage into the DC voltage, thereby charging the battery with the electric power supplied from the power source.

In addition, in the electric vehicle,
After the charging plug is connected to the power supply, the control unit waits for control to convert the AC voltage into the DC voltage until the state of being equal to or lower than the threshold speed continues for the threshold time, and the threshold speed. When the following state continues for the threshold time, the control for converting the AC voltage into the DC voltage may be performed.

In addition, in the electric vehicle,
The threshold speed may be a threshold value of an absolute value of the rotation speed.

In addition, in the electric vehicle,
The control unit determines whether or not the rotation speed is equal to or lower than the threshold speed in a preset determination cycle, and when the rotation speed is equal to or lower than the threshold speed, the control unit is in a state of being equal to or lower than the threshold speed. The count value of the duration is incremented, and until the count value reaches the completion value corresponding to the threshold time, the control of charging the battery with the electric power supplied from the power source is waited, and the count value is the completion value. When the value is reached, the battery may be charged with the electric power supplied from the power source.

In addition, in the electric vehicle,
The control unit may reset the count value when the rotation speed is not equal to or less than the threshold speed.

In addition, in the electric vehicle,
The control unit may control to supply electric power from the battery to the motor generator.

In addition, in the electric vehicle,
The wheels and the motor generator may be mechanically connected without a clutch.

The electric vehicle control device according to one aspect of the present invention is
With a rechargeable battery
A motor generator that outputs torque for driving the wheels by the electric power supplied from the battery, or outputs electric power as the wheels rotate.
A charging unit that charges the battery with the power supplied from the power supply,
An electric vehicle control device that controls an electric vehicle including a rotation speed detection unit for detecting the rotation speed of the motor generator in a state of outputting electric power.
It is provided with a control unit that charges the battery with the electric power output by the motor generator and controls the charging unit to charge the battery with the electric power supplied from the power source.
After the rotation speed is detected, the control unit waits for control to charge the battery with the electric power supplied from the power source until the detected rotation speed is equal to or less than the threshold speed for a threshold time. An electric vehicle control device, characterized in that, when the state of being equal to or lower than the threshold speed continues for the threshold time, the battery is charged with the electric power supplied from the power source.

The electric vehicle control method according to one aspect of the present invention is
With a rechargeable battery
A motor generator that outputs torque for driving the wheels by the electric power supplied from the battery, or outputs electric power as the wheels rotate.
A charging unit that charges the battery with the power supplied from the power supply,
An electric vehicle control method for controlling an electric vehicle including a rotation speed detection unit for detecting the rotation speed of the motor generator in a state of outputting electric power.
After the rotation speed is detected, the control of charging the battery with the electric power supplied from the power source is waited until the state where the detected rotation speed is equal to or lower than the threshold speed continues for a threshold time, and the threshold speed is reached. When the following state continues for the threshold time, the battery is controlled to be charged by the electric power supplied from the power source.

The electric vehicle according to one aspect of the present invention is a rechargeable battery and a motor generator that outputs torque for driving wheels by electric power supplied from the batteries or outputs electric power as the wheels rotate. And, a charging unit that charges the battery with the power supplied from the power supply, a rotation speed detector for detecting the rotation speed of the motor generator in the state of outputting power, and a battery is charged with the power output by the motor generator. A control unit that controls the charging unit to charge the battery with the electric power supplied from the power source is provided, and the control unit has the detected rotation speed equal to or lower than the threshold speed after the rotation speed is detected. It waits for control to charge the battery with the power supplied from the power supply until the state continues for the threshold time, and when the state below the threshold speed continues for the threshold time, controls to charge the battery with the power supplied from the power supply. Do.

As described above, according to the present invention, the rotation speed of the motor generator in the state where the motor generator outputs electric power with the rotation of the wheels is detected, and the state in which the detected rotation speed is equal to or less than the threshold speed continues for the threshold time. Until then, the control to charge the battery with the power supplied from the power source can be waited for.

As a result, the battery can be charged with the electric power supplied from the power source in a state where the power generation of the motor generator due to the rotation of the wheels is sufficiently suppressed.

Therefore, according to the present invention, it is possible to properly charge the battery by avoiding the supply of excessive power to the battery from both the power source and the motor generator.

It is a figure which shows the electric motorcycle 100 which concerns on 1st Embodiment. It is a figure which shows the electric power conversion part 30 and the motor generator 3 in the electric motorcycle 100 which concerns on 1st Embodiment. It is a figure which shows the magnet provided in the rotor of the motor generator 3 and the angle sensor 4 in the electric motorcycle 100 which concerns on 1st Embodiment. It is a figure which shows the relationship between the rotor angle and the output of an angle sensor 4 in the electric motorcycle 100 which concerns on 1st Embodiment. It is a flowchart which shows the control method of the electric motorcycle 100 which concerns on 1st Embodiment. It is a figure which shows the electric motorcycle 100 which concerns on 2nd Embodiment. It is a flowchart which shows the control method of the electric motorcycle 100 which concerns on 2nd Embodiment.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. The embodiments shown below do not limit the present invention. Further, in the drawings referred to in the embodiment, the same parts or parts having the same functions are designated by the same reference numerals or similar reference numerals, and the repeated description thereof will be omitted.

(First Embodiment)
First, the electric motorcycle 100 according to the first embodiment as an example of the electric vehicle will be described with reference to FIG.

The electric motorcycle 100 is an electric motorcycle such as an electric motorcycle that travels by driving a motor using electric power supplied from a battery. More specifically, the electric motorcycle 100 is a clutchless electric motorcycle in which a motor and wheels are mechanically connected without a clutch.

As shown in FIG. 1, the electric motorcycle 100 includes an electric vehicle control device 1, a battery 2, a motor generator 3, an angle sensor 4 which is an example of a rotation speed detection unit, an accelerator position sensor 5, and a meter 7. A wheel 8 and a charger 9 which is an example of a charging unit are provided.

Hereinafter, each component of the electric motorcycle 100 will be described in detail.

The electric vehicle control device 1 is a device that controls the electric motorcycle 100, and has a control unit 10, a storage unit 20, and a power conversion unit 30. The electric vehicle control device 1 may be configured as an ECU (Electronic Control Unit) that controls the entire electric motorcycle 100. Next, each component of the electric vehicle control device 1 will be described in detail.

The control unit 10 inputs information from various devices connected to the electric vehicle control device 1, and drives and controls the motor generator 3 via the power conversion unit 30. The details of the control unit 10 will be described later.

The storage unit 20 stores information used by the control unit 10 and a program for operating the control unit 10. The storage unit 20 is, for example, a non-volatile semiconductor memory, but is not limited thereto.

The power conversion unit 30 converts the DC power of the battery 2 into AC power and supplies it to the motor generator 3. As shown in FIG. 2, the power conversion unit 30 is composed of a three-phase full bridge circuit. The semiconductor switches Q1, Q3 and Q5 are high-side switches, and the semiconductor switches Q2, Q4 and Q6 are low-side switches. The control terminals of the semiconductor switches Q1 to Q6 are electrically connected to the control unit 10. A smoothing capacitor C is provided between the power supply terminal 30a and the power supply terminal 30b. The semiconductor switches Q1 to Q6 are, for example, MOSFETs, IGBTs, or the like.

As shown in FIG. 2, the semiconductor switch Q1 is connected between the power supply terminal 30a to which the positive electrode of the battery 2 is connected and the input terminal 3a of the motor generator 3. Similarly, the semiconductor switch Q3 is connected between the power supply terminal 30a and the input terminal 3b of the motor generator 3. The semiconductor switch Q5 is connected between the power supply terminal 30a and the input terminal 3c of the motor generator 3.

The semiconductor switch Q2 is connected between the input terminal 3a of the motor generator 3 and the power supply terminal 30b to which the negative electrode of the battery 2 is connected. Similarly, the semiconductor switch Q4 is connected between the input terminal 3b of the motor generator 3 and the power supply terminal 30b. The semiconductor switch Q6 is connected between the input terminal 3c of the motor generator 3 and the power supply terminal 30b. The input terminal 3a is a U-phase input terminal, the input terminal 3b is a V-phase input terminal, and the input terminal 3c is a W-phase input terminal.

The battery 2 can be charged and discharged. Specifically, the battery 2 supplies DC power to the power conversion unit 30 at the time of discharging. Further, when charging with AC power supplied from an external power source 13 such as a commercial power source, the battery 2 is charged with DC power obtained by converting the AC power supplied from the power source 13 with the charger 9. Further, when the battery 2 is charged by the AC power output by the motor generator 3 as the wheels 8 rotate, the battery 2 is charged by the DC voltage obtained by converting the AC power output by the motor generator 3 by the power conversion device 100.

The battery 2 includes a battery management unit (BMU). The battery management unit transmits information regarding the voltage of the battery 2 and the state (charge rate, etc.) of the battery 2 to the control unit 10.

The number of batteries 2 is not limited to one, and may be plural. The battery 2 is, for example, a lithium ion battery, but may be another type of battery. The battery 2 may be composed of different types of batteries (for example, a lithium ion battery and a lead battery).

The motor generator 3 outputs torque for driving the wheels 8 by the electric power supplied from the battery 2. Alternatively, the motor generator 3 outputs electric power as the wheels 8 rotate.

Specifically, the motor generator 3 outputs torque for driving the wheels 8 by being driven by AC power supplied from the power conversion unit 30. The torque may be controlled by the control unit 10 outputting a PWM signal having an energization timing and a duty ratio calculated based on the target torque to the semiconductor switches Q1 to Q6 of the power conversion unit 30. That is, the torque may be controlled by the control unit 10 controlling the electric power supplied from the battery 2 to the motor generator 3.

The motor generator 3 is mechanically connected to the wheel 8 and rotates the wheel 8 in a desired direction by torque. In this embodiment, the motor generator 3 is mechanically connected to the wheel 8 without the intervention of a clutch. The type of the motor generator 3 is not particularly limited.

Further, the motor generator 3 outputs AC power as the wheels 8 rotate. Specifically, the motor generator 3 outputs AC power (that is, regenerative power) when the rotation speed of the motor generator 3 is decelerated or when the motor generator 3 is rotated by an external force. Examples of the case where the rotation speed of the motor generator 3 is decelerated include the case where the vehicle is braked and braked during traveling. Further, examples of the case where the motor generator 3 is rotated by an external force include a case where the motor generator 3 is rotated by inertia and a case where the motor generator 3 is driven on a slope (downhill) in a state where power is not supplied from the battery 2 to the motor generator 3. ..

In addition to these, when the motor generator 3 is rotated by an external force, a stand of the wheel 8 is erected so that the wheel 8 can be rotated by an external force (for example, a user's hand), and the wheel 8 is separated from the ground. In the state, the case where the motor generator 3 is rotated by rotating the wheel 8 by an external force is included.

The AC power output by the motor generator 3 is converted into DC power by the power conversion unit 30, and the battery 2 is charged (that is, regenerative charging) with the converted DC power.

The charger 9 charges the battery 2 with the AC power supplied from the power source 13. The charger 9 includes an AC-DC converter 91, a converter control unit 92, and a charging plug 93. The charging plug 93 is connected to the power supply 13 via an outlet (not shown). The AC-DC converter 91 converts the AC voltage input from the power supply 13 via the charging plug 93 into a DC voltage. The converter control unit 92 controls the power conversion of the AC-DC converter 91.

The angle sensor 4 is a sensor that detects the rotation angle of the rotor of the motor generator 3 in order to detect the rotation speed of the motor generator 3. As shown in FIG. 3, magnets (sensor magnets) of N pole and S pole are alternately attached to the peripheral surface of the rotor of the motor generator 3. The angle sensor 4 is composed of, for example, a Hall element, and detects a change in the magnetic field accompanying the rotation of the motor generator 3. The magnet may be provided inside the flywheel (not shown).

As shown in FIG. 3, the angle sensor 4 includes a U-phase angle sensor 4u, a V-phase angle sensor 4v, and a W-phase angle sensor 4w. In the present embodiment, the U-phase angle sensor 4u and the V-phase angle sensor 4v are arranged so as to form an angle of 30 ° with respect to the rotor of the motor generator 3. Similarly, the V-phase angle sensor 4v and the W-phase angle sensor 4w are arranged so as to form an angle of 30 ° with respect to the rotor of the motor generator 3.

As shown in FIG. 4, the U-phase angle sensor 4u, the V-phase angle sensor 4v, and the W-phase angle sensor 4w output a phase pulse signal (that is, a rotation angle detection signal) corresponding to the rotor angle (angle position). To do.

Further, as shown in FIG. 4, a number indicating the rotor stage (rotor stage number) is assigned to each predetermined rotor angle. The rotor stage indicates the angular position of the rotor of the motor generator 3, and in the present embodiment, the rotor stage numbers 1, 2, 3, 4, 5, and 6 are assigned every 60 ° in the electric angle. The rotor stage is defined by a combination of output signal levels (H level or L level) of the U-phase angle sensor 4u, the V-phase angle sensor 4v, and the W-phase angle sensor 4w. For example, the rotor stage number 1 is (U phase, V phase, W phase) = (H, L, H), and the rotor stage number 2 is (U phase, V phase, W phase) = (H, L, L). ).

The accelerator position sensor 5 detects the accelerator operation amount set by the user's accelerator operation, and transmits the detected accelerator operation amount as an electric signal to the control unit 10. When the user wants to accelerate, the accelerator operation amount becomes large.

The meter 7 is a display (for example, a liquid crystal panel) provided on the electric motorcycle 100, and displays various information. Specifically, information such as the traveling speed of the electric motorcycle 100, the remaining amount of the battery 2, the current time, and the traveling distance is displayed on the meter 7. In this embodiment, the meter 7 is provided on the handle (not shown) of the electric motorcycle 100.

Next, the control unit 10 of the electric vehicle control device 1 will be described in detail.

The control unit 10 controls to charge the battery 2 (that is, regenerative charging) with the electric power output from the motor generator 3.

Further, the control unit 10 controls the charger 9 to charge the battery 2 with the electric power supplied from the power source 13. Specifically, the control unit 10 controls the AC-DC converter 91 to convert an AC voltage into a DC voltage, thereby charging the battery 2 with the electric power supplied from the power source 13. More specifically, the control unit 10 outputs a charge permission signal for permitting the converter control unit 92 to charge the battery 2 with the electric power supplied from the power supply 13, thereby causing the converter control unit 92 to charge the AC-DC. The battery 2 is controlled to be charged through the control of the converter 91.

In a state where the battery 2 can be charged with the electric power supplied from the power source 13, the control unit 10 detects the rotation speed of the motor generator 3 in the state of outputting the electric power based on the pulse signal output from the angle sensor 4. ..

As an example, as shown in FIG. 4, the control unit 10 calculates the rotation speed of the motor generator 3 based on the time t from the falling edge of the output of the V-phase rotor angle sensor to the rising edge of the output of the U-phase rotor angle sensor. To do.

As a state in which the motor generator 3 outputs electric power in a state where the battery 2 can be charged by the electric power supplied from the power source 13, for example, the stand of the wheel 8 is erected so that the wheel 8 can be rotated by an external force. Can be mentioned as being off the ground.

In this way, when the stand of the wheel 8 is erected and the wheel 8 is separated from the ground, the charging plug 93 can be connected to the power source 13 to charge the battery 2, and the wheel 8 is rotated by hand. This is a state in which the motor generator 3 can generate electric power.

The control unit 10 regulates the charging of the battery 2 in such a state that both the power source 13 and the motor generator 3 can be charged, so that the battery 2 is excessively powered by both the power source 13 and the motor generator 3. Is configured to avoid being supplied.

Specifically, after the rotation speed of the motor generator 3 is detected, the control unit 10 uses the power supplied from the power source 13 to generate a battery until the detected rotation speed is equal to or less than the threshold speed for a threshold time. Wait for control to charge 2.

Then, the control unit 10 controls to charge the battery 2 with the electric power supplied from the power source 13 when the state in which the detected rotation speed of the motor generator 3 is equal to or lower than the threshold speed continues for the threshold time.

The threshold speed of the motor generator 3 may be the threshold value of the absolute value of the rotation speed.

More specifically, the control unit 10 refers to the AC-DC converter 91 after the charging plug 93 is connected to the power supply 13 until the state in which the rotation speed of the motor generator 3 is equal to or lower than the threshold speed continues for a threshold time. Therefore, the control for converting the AC voltage into the DC voltage may be waited for.

Then, the control unit 10 may control the AC-DC converter 91 to convert the AC voltage into the DC voltage when the state of being equal to or lower than the threshold speed continues for the threshold time. The control for the AC-DC converter 91 may be performed via the converter control unit 92.

For example, the control unit 10 determines whether or not the rotation speed is equal to or less than the threshold speed in a preset determination cycle, and when the rotation speed is equal to or less than the threshold speed, the duration of the state of being equal to or less than the threshold speed. The count value may be incremented. The control unit 10 may wait for control to charge the battery with the electric power supplied from the power source until the count value reaches the completion value corresponding to the threshold time.

Then, the control unit 10 may control to charge the battery 2 with the electric power supplied from the power source 13 when the count value reaches the completion value.

Further, the control unit 10 may reset the count value when the rotation speed of the motor generator 3 is not equal to or less than the threshold speed. Further, instead of counting up to the completion value of the count value (incrementing the count value), countdown to the completion value of the count value (decrement of the count value) may be performed.

(Control method for electric motorcycle 100)
Hereinafter, the control method of the electric motorcycle 100 according to the first embodiment will be described as an example of the electric vehicle control method with reference to the flowchart of FIG. The flowchart of FIG. 5 is repeated as necessary.

First, the charging plug 93 is connected to the power supply 13 (step S1).

After the charging plug 93 is connected to the power supply 13, the control unit 10 determines whether or not the motor generator 3 is in a state of outputting electric power (step S2).

For example, in the control unit 10, the rotation of the motor generator 3 is detected by the angle sensor 4 in a state where power is not supplied from the battery 2 to the motor generator 3, and the motor generator 3 is in a state where the accelerator operation amount is zero. It may be determined whether or not the motor generator 3 is in a state of outputting electric power based on the fact that the rotation of the motor generator 3 is detected.

When the motor generator 3 is in the state of outputting electric power (step S2: Yes), the control unit 10 counts the duration of the state in which the rotation speed of the motor generator 3 is equal to or less than the threshold value (that is, the low speed state). The value n is reset (n = 0) (step S3). On the other hand, when the motor generator 3 is not in a state of outputting electric power (step S2: No), the control unit 10 outputs a charge permission signal to the converter control unit 92, so that the battery 2 is powered by the electric power supplied from the power source 13. Allow charging (step S9).

After resetting the count value n, the control unit 10 acquires the pulse signal of the angle sensor 4 (step S4).

After acquiring the pulse signal of the angle sensor 4, the control unit 10 calculates the rotation speed of the motor generator 3 based on the acquired pulse signal (step S5).

After calculating the rotation speed of the motor generator 3, the control unit 10 determines whether or not the calculated absolute value of the rotation speed of the motor generator 3 is equal to or less than the threshold value (step S6).

When the absolute value of the rotation speed of the motor generator 3 is equal to or less than the threshold value (step S6: Yes), the control unit 10 increments the count value (n = n + 1) (step S7). On the other hand, when the absolute value of the rotation speed of the motor generator 3 is not equal to or less than the threshold value (step S6: No), the control unit 10 resets the count value (step S3).

After incrementing the count value, the control unit 10 determines whether or not the count value has reached the completion value (step S8). This determination corresponds to the determination of whether or not the state in which the rotation speed of the motor generator 3 is equal to or lower than the threshold speed continues for the threshold time.

When the count value reaches the completion value (step S8: Yes), the control unit 10 outputs a charge permission signal to the converter control unit 92. On the other hand, when the count value has not reached the completion value (step S8: No), the control unit 10 acquires the pulse signal of the angle sensor 4 (step S4).

In the example of FIG. 5, the control unit 10 performs the processes from step S2 to step S8 after the charging plug 93 is connected to the power supply 13. On the other hand, the control unit 10 may confirm that the charging plug 93 is connected to the power supply 13 after the count value reaches the completed value. In this case, the control unit 10 may output a charge permission signal to the converter control unit 92 after waiting for confirmation that the charging plug 93 is connected to the power supply 13.

Hereinafter, the action brought about by the first embodiment will be described.

As described above, in the first embodiment, in the control unit 10, after the rotation speed of the motor generator 3 in the state where the motor generator 3 outputs electric power is detected (calculated), the detected rotation speed is the threshold speed. The control for charging the battery 2 with the electric power supplied from the power source 13 is waited for until the following state continues for the threshold time. Then, the control unit 10 controls to charge the battery 2 with the electric power supplied from the power source 13 when the state in which the rotation speed of the motor generator 3 is equal to or lower than the threshold speed continues for the threshold time.

As a result, the battery 2 can be charged with the electric power supplied from the power source 13 in a state where the power generation of the motor generator 3 due to the rotation of the wheels 8 is sufficiently suppressed.

As a result, it is possible to prevent the battery 2 from being supplied with excessive electric power from both the power source 13 and the motor generator 3, and to appropriately charge the battery 2.

Further, as described above, in the first embodiment, the control unit 10 controls the AC-DC converter 91 via the converter control unit 92 to convert the AC voltage into the DC voltage, thereby converting the AC voltage into the DC voltage. Control is performed to charge the battery 2 with the electric power supplied from. At that time, after the charging plug 93 is connected to the power supply 13 (step S1 in FIG. 5), the control unit 10 keeps the state in which the rotation speed of the motor generator 3 is equal to or lower than the threshold speed for a threshold time (FIG. 5). Step S8), the AC voltage is changed to the DC voltage when the control for converting the AC voltage supplied from the power supply 13 is waited for and the state in which the rotation speed of the motor generator 3 is equal to or lower than the threshold speed continues for the threshold time. Control is performed to convert to (step S9 in FIG. 5).

As a result, until the state in which the rotation speed of the motor generator 3 is equal to or lower than the threshold speed continues for the threshold time, it is possible to wait for the conversion of the AC power input from the power supply 13 to the AC-DC converter 91 into DC power. Therefore, the battery 2 can be reliably charged in a state where the power generation of the motor generator 3 due to the rotation of the wheels 8 is sufficiently suppressed.

Further, as described above, in the first embodiment, the control unit 10 uses the threshold value of the absolute value of the rotation speed as the threshold speed of the rotation speed of the motor generator 3, regardless of the rotation direction of the wheels 8. The battery 2 can be charged with the electric power supplied from the power source 13 in a state where the power generation of the motor generator 3 due to the rotation of the wheels 8 is sufficiently suppressed.

Further, as described above, in the first embodiment, the control unit 10 determines whether or not the rotation speed of the motor generator 3 is equal to or less than the threshold speed in a preset determination cycle (step S5 in FIG. 5). ). When the rotation speed is equal to or less than the threshold speed, the control unit 10 increments the count value of the duration of the state of being equal to or less than the threshold speed (step S7 in FIG. 5), and the count value becomes a completion value corresponding to the threshold time. Until it reaches the limit, it waits for control to charge the battery 2 with the power supplied from the power source 13 (step S8). Then, when the count value reaches the completion value, the control unit 10 controls to charge the battery 2 with the electric power supplied from the power source 13 (step S9).

As a result, the control of charging the battery 2 with the electric power supplied from the power source 13 can be waited for until the count value reaches the completion value corresponding to the threshold time. As a result, the battery 2 can be reliably charged with simple control in a state where the power generation of the motor generator 3 due to the rotation of the wheels 8 is sufficiently suppressed.

Further, as described above, in the first embodiment, when the rotation speed of the motor generator 3 is not equal to or less than the threshold speed, the control unit 10 resets the count value of the duration of the state of being equal to or less than the threshold speed.

As a result, it is possible to control the battery 2 to be charged with the electric power supplied from the power source 13 after surely waiting for the state in which the rotation speed is equal to or lower than the threshold speed to continue for the threshold time. As a result, it is possible to more reliably charge the battery 2 in a state where the power generation of the motor generator 3 due to the rotation of the wheels 8 is sufficiently suppressed.

(Second Embodiment)
Next, the electric motorcycle 100 according to the second embodiment will be described with reference to FIG. As shown in FIG. 6, in the electric motorcycle 100 according to the second embodiment, in addition to the configuration of the first embodiment, the under-seat storage unit 14 which is an example of the storage unit and the closed state detection unit It includes a seat switch 15 as an example.

The under-seat storage unit 14 is an openable / closable space for storing the battery 2 provided under the seat of the electric motorcycle 100. The seat is attached to the vehicle body so that the storage portion 14 under the seat can be moved (for example, rotated) in a direction in which it can be opened and closed by, for example, a hinge mechanism. During driving, the under-seat storage section 14 is covered with a seat for the driver to sit on the seat. On the other hand, when the battery 2 is being charged, the under-seat storage portion 14 is opened by moving the seat in order to take out the charging plug 93.

When the seat under-seat storage unit 14 is opened due to the movement of the seat, the seat switch 15 outputs an off signal indicating the detection result of the open state of the under-seat storage unit 14 to the control unit 10. On the other hand, when the seat under-seat storage unit 14 is closed due to the movement of the seat, the seat switch 15 outputs an on signal indicating a detection result of the closed state of the under-seat storage unit 14 to the control unit 10. The under-seat storage unit 14 can be closed with the charging plug 93 taken out.

The seat switch 15 may be, for example, a mechanical switch that is turned on by being pressed by the seat when the seat is closed and turned off by being released by the seat when the seat is opened.

When the state in which the rotation speed of the motor generator 3 is equal to or lower than the threshold speed continues for the threshold time, the control unit 10 detects the closed state (on signal) of the storage unit 14 under the seat by the seat switch 15. Control is performed to charge the battery 2 with the electric power supplied from the power source 13.

Hereinafter, the control method of the electric motorcycle 100 according to the second embodiment will be described with reference to the flowchart of FIG. 7, focusing on the difference from the first embodiment. The flowchart of FIG. 7 is repeated as necessary.

As shown in FIG. 7, in the second embodiment, when the count value reaches the completion value (step S8: Yes), the control unit 10 determines whether or not the seat switch 15 is turned on (step S10). ).

When the seat switch 15 is turned on (step S10: Yes), the control unit 10 outputs a charge permission signal to the converter control unit 92 (step S9). On the other hand, when the seat switch 15 is not turned on (step S10: No), the control unit 10 resets the count value (step S3).

As described above, according to the second embodiment, charging of the battery 2 in the open state of the seat can be prohibited, so that excessive power is applied to the battery 2 from both the power source 13 and the motor generator 3. It is possible to prevent the battery 2 from being supplied in advance, and to prevent foreign matter from entering the storage portion 14 under the seat while appropriately charging the battery 2.

At least a part of the electric vehicle control device 1 (control unit 10) described in the above-described embodiment may be configured by hardware or software. In the case of software configuration, a program that realizes at least a part of the functions of the control unit 10 may be stored in a recording medium such as a flexible disk or a CD-ROM, read by a computer, and executed. The recording medium is not limited to a removable one such as a magnetic disk or an optical disk, and may be a fixed recording medium such as a hard disk device or a memory.

Further, a program that realizes at least a part of the functions of the control unit 10 may be distributed via a communication line (including wireless communication) such as the Internet. Further, the program may be encrypted, modulated, compressed, and distributed via a wired line or wireless line such as the Internet, or stored in a recording medium.

Based on the above description, those skilled in the art may be able to conceive of additional effects and various modifications of the present invention, but aspects of the present invention are not limited to the individual embodiments described above. .. Components across different embodiments may be combined as appropriate. Various additions, changes and partial deletions can be made without departing from the conceptual idea and purpose of the present invention derived from the contents defined in the claims and their equivalents.

1 Electric vehicle control device 2 Battery 3 Motor generator 4 Angle sensor 9 Charger 10 Control unit 100 Electric motorcycle

Claims (13)

With a rechargeable battery
A motor generator that outputs torque for driving the wheels by the electric power supplied from the battery, or outputs electric power as the wheels rotate.
A charging unit that charges the battery with the power supplied from the power supply,
A rotation speed detection unit for detecting the rotation speed of the motor generator in a state of outputting the electric power,
It includes a control unit that charges the battery with the electric power output by the motor generator and controls the charging unit to charge the battery with the electric power supplied from the power source.
After the rotation speed is detected, the control unit waits for control to charge the battery with the electric power supplied from the power supply until the state in which the detected rotation speed is equal to or lower than the threshold speed continues for a threshold time. An electric vehicle characterized in that, when the state of being equal to or lower than the threshold speed continues for the threshold time, the battery is charged with the power supplied from the power source. The electric vehicle according to claim 1, wherein the state of outputting the electric power is a state in which the stand of the vehicle is erected so that the wheels can be rotated by an external force and the wheels are separated from the ground. An openable and closable storage unit for storing the battery,
A closed state detection unit for detecting the closed state of the storage unit is further provided.
The control unit controls to charge the battery with the electric power supplied from the power source when the closed state is detected when the state of being equal to or lower than the threshold speed continues for the threshold time. The electric vehicle according to claim 1. The electric vehicle according to claim 3, wherein the storage portion is opened and closed by a seat of the vehicle. The charging unit includes a charging plug connected to the power supply and an AC-DC converter that converts an AC voltage input from the power supply into a DC voltage via the charging plug.
The control unit is characterized in that it controls the AC-DC converter to convert the AC voltage into the DC voltage, thereby charging the battery with the electric power supplied from the power source. The electric vehicle according to claim 1. After the charging plug is connected to the power supply, the control unit waits for control to convert the AC voltage into the DC voltage until the state of being equal to or lower than the threshold speed continues for the threshold time, and the threshold speed. The electric vehicle according to claim 5, wherein when the following state continues for the threshold time, the control for converting the AC voltage into the DC voltage is performed. The electric vehicle according to claim 1, wherein the threshold speed is a threshold value of an absolute value of the rotation speed. The control unit determines whether or not the rotation speed is equal to or lower than the threshold speed in a preset determination cycle, and when the rotation speed is equal to or lower than the threshold speed, the control unit is in a state of being equal to or lower than the threshold speed. The count value of the duration is incremented, and until the count value reaches the completion value corresponding to the threshold time, the control of charging the battery with the electric power supplied from the power source is waited, and the count value is the completion value. The electric vehicle according to claim 1, wherein the battery is controlled to be charged by the electric power supplied from the power source when the value is reached. The electric vehicle according to claim 8, wherein the control unit resets the count value when the rotation speed is not equal to or less than the threshold speed. The electric vehicle according to claim 1, wherein the control unit controls to supply electric power from the battery to the motor generator. The electric vehicle according to claim 1, wherein the wheels and the motor generator are mechanically connected without a clutch. With a rechargeable battery
A motor generator that outputs torque for driving the wheels by the electric power supplied from the battery, or outputs electric power as the wheels rotate.
A charging unit that charges the battery with the power supplied from the power supply,
An electric vehicle control device that controls an electric vehicle including a rotation speed detection unit for detecting the rotation speed of the motor generator in a state of outputting electric power.
It is provided with a control unit that charges the battery with the electric power output by the motor generator and controls the charging unit to charge the battery with the electric power supplied from the power source.
After the rotation speed is detected, the control unit waits for control to charge the battery with the electric power supplied from the power source until the detected rotation speed is equal to or less than the threshold speed for a threshold time. An electric vehicle control device, characterized in that, when the state of being equal to or lower than the threshold speed continues for the threshold time, the battery is charged with the electric power supplied from the power source. With a rechargeable battery
A motor generator that outputs torque for driving the wheels by the electric power supplied from the battery, or outputs electric power as the wheels rotate.
A charging unit that charges the battery with the power supplied from the power supply,
An electric vehicle control method for controlling an electric vehicle including a rotation speed detection unit for detecting the rotation speed of the motor generator in a state of outputting electric power.
After the rotation speed is detected, the control of charging the battery with the electric power supplied from the power source is waited until the state where the detected rotation speed is equal to or less than the threshold speed continues for the threshold time, and the threshold speed is reached. An electric vehicle control method comprising controlling charging of the battery with electric power supplied from the power source when the following state continues for the threshold time.

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