JP2004320946A - Electric vehicle and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extend the traveling distance after the complete consumption of a fuel. <P>SOLUTION: When the remaining quantity Qf of a fuel is equal to or larger than a threshold Qref, a value S1 in a normal case is set for SOC center SC based on the judgment that the sufficient fuel is remaining in a fuel tank 23 (S120). When the remaining quantity Qf of the fuel is less than the threshold value Qref, a fuel lamp 90 is lighted determining that the fuel is running short (S130), and the SOC center SC (reference value for battery charging) is set to a value S2 larger than the value S1 (S140). The remaining capacity (SOC) of a battery 50 can be increased at the time when the remaining quantity Qf has decreased so that the traveling distance by motor traveling can be extended after the complete consumption of the fuel in the fuel tank 23. As a result, it is possible to ease a driver's worry about becoming unable to continue the traveling. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electric vehicle and a control method thereof, and more particularly, to an electric vehicle that can run by power from an electric motor and a control method thereof.
[0002]
2. Description of the Related Art
Conventionally, as this type of electric vehicle, there has been proposed a hybrid vehicle that runs on the power from an engine and the power from a motor and that forcibly switches to a motor running mode when the remaining gasoline becomes low ( For example, see Patent Document 1). In this hybrid vehicle, by forcibly switching to the motor running mode in this way, the running distance after the remaining gasoline level becomes small is increased.
[0003]
As described above, it is preferable that the running distance after the remaining gasoline amount becomes small is long so as to give the driver a sense of security. For this reason, it is conceivable that a large amount of gasoline is used as the timing for displaying the warning that the gasoline remaining amount is low, but in this case, the warning is displayed even though there is still enough remaining amount. This lowers the driver's awareness of the warning. In a hybrid vehicle that can be driven by a motor, the vehicle can be driven by a motor even after gasoline as fuel is completely consumed. If the traveling distance can be lengthened in that case, the driver's sense of security can be increased.
[0004]
An object of the present invention is to extend the traveling distance after completely consuming fuel.
[0005]
[Patent Document 1]
JP-A-10-28302 (FIG. 12)
[0006]
[Means for Solving the Problems and Their Functions and Effects]
The electric vehicle and the control method thereof according to the present invention employ the following means to achieve the above object.
[0007]
The electric vehicle of the present invention
An electric vehicle that can run with power from an electric motor,
Power generation means for generating power with consumption of fuel;
Power storage means for storing power using the power from the power generation means and supplying power to the electric motor,
Remaining amount detecting means for detecting the remaining amount of fuel supplied to the power generating means,
A use mode setting unit that sets a use mode of the power storage unit based on the detected remaining amount of fuel;
Control means for controlling the electric motor and the power generation means such that the power storage means is used in the use mode set by the use mode setting means and power is output according to a driver's request. Is the gist.
[0008]
In the electric vehicle according to the present invention, the usage mode of the power storage unit that stores the power using the power from the power generation unit based on the remaining amount of the fuel and can supply the electric power to the motor is set, and the usage mode in which the power storage unit is set is set. And controls the electric motor and the generator so that the motive power corresponding to the driver's request is output. As a result, the power storage means can be used based on the remaining amount of fuel. Therefore, if the usage mode is set such that the amount of power stored in the power storage means increases when the remaining amount of fuel decreases, the traveling distance by the electric motor after the fuel is completely consumed can be increased.
[0009]
In the electric vehicle according to the present invention, the use mode setting unit may be a unit that sets the use mode as a tendency that the smaller the remaining amount of the detected fuel is, the larger the storage amount of the power storage unit is. You can also. This makes it possible to extend the traveling distance of the electric motor after the fuel has been completely consumed.
[0010]
In the electric vehicle according to the aspect of the present invention, in which the usage mode is set such that the storage amount of the power storage means tends to increase as the remaining amount of the fuel is smaller, the usage mode setting means includes the storage mode as the usage mode. It may be a means for setting the use range. With this configuration, the smaller the remaining amount of the fuel is, the larger the amount of power stored in the power storage unit can be, depending on the usage range of the power storage unit. In the electric vehicle according to the aspect of the present invention, when the detected remaining amount of the fuel is equal to or more than a predetermined amount, the usage mode setting unit sets a first usage range, and determines the remaining amount of the detected fuel. When the amount is less than the fixed amount, the means may be a means for setting a second use range in which the amount of stored electricity is larger than the first use range.
[0011]
Further, in the electric vehicle according to the aspect of the invention, in which the usage mode is set such that the amount of power stored in the power storage unit increases as the remaining amount of fuel decreases, the usage mode setting unit charges the power storage unit as the usage mode It may be a means for setting a reference value for charging. With this configuration, the charging reference value for charging the power storage means allows the amount of power stored in the power storage means to increase as the remaining amount of fuel decreases. In the electric vehicle according to the aspect of the present invention, when the detected remaining amount of the fuel is equal to or more than a predetermined amount, the usage mode setting means sets a first value as the charging reference value, and When the remaining amount of the battery is less than a predetermined amount, it may be a means for setting a second value larger than the first value as the charging reference value.
[0012]
As described above, in the electric vehicle according to the aspect of the invention in which the usage mode of the power storage unit is changed depending on whether the remaining amount of the fuel is equal to or more than the predetermined amount, the remaining amount of the fuel detected by the remaining amount detection unit is Warning means may be provided to warn the driver of the remaining amount of fuel when the amount is less than the predetermined amount. That is, the usage mode of the power storage means is changed at the timing when the remaining fuel amount is warned.
[0013]
In the electric vehicle according to the present invention, the power generation unit may include an internal combustion engine and a generator that generates power by using at least a part of power from the internal combustion engine.
[0014]
In the electric vehicle according to the aspect of the present invention, the power generation means may be a means capable of outputting a part of the power from the internal combustion engine to an axle. In this case, the power generation means has three shafts connected to an output shaft of the internal combustion engine, a drive shaft connected to the axle, and a rotation shaft of the generator, and any two of the three shafts Power input / output means for inputting / outputting power to the remaining shaft based on the power input / output to / from the power generator, and the generator is connected to an output shaft of the internal combustion engine. A first rotor and a second rotor connected to the axle via a drive shaft; and a power source for the internal combustion engine with input and output of electric power based on the electromagnetic action of the two rotors. A part may be a rotor motor capable of outputting to the drive shaft.
[0015]
The method for controlling an electric vehicle according to the present invention includes:
A motor capable of outputting at least a part of the driving power, a power generation unit that generates power with fuel consumption, and a power storage unit configured to store power using the power from the power generation unit and to supply power to the motor, An electric vehicle control method comprising:
(A) detecting the remaining amount of fuel to be supplied to the power generation means,
(B) setting a use mode of the power storage means based on the detected remaining amount of fuel;
(C) The gist is to control the electric motor and the power generation means so that the power storage means is used in the set use mode and power is output according to a driver's request.
[0016]
According to the control method for an electric vehicle of the present invention, the use mode of the power storage means that stores power using the power from the power generation means and supplies power to the electric motor based on the remaining amount of fuel is set, and the power storage means is used. Since the electric motor and the power generation means are controlled so as to be used in the set use mode and to output power according to the driver's request, the power storage means can be used based on the remaining amount of fuel. Therefore, if the usage mode is set such that the amount of power stored in the power storage means increases when the remaining amount of fuel decreases, the traveling distance by the electric motor after the fuel is completely consumed can be increased.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described using examples. FIG. 1 is a configuration diagram schematically showing the configuration of a hybrid vehicle 20 equipped with a power output device according to one embodiment of the present invention. As shown in the figure, the hybrid vehicle 20 of the embodiment includes an engine 22, a three-shaft power distribution integration mechanism 30 connected to a crankshaft 26 as an output shaft of the engine 22 via a damper 28, and a power distribution integration mechanism. A motor MG1 capable of generating electricity connected to the mechanism 30, a reduction gear 35 attached to a ring gear shaft 32a as a drive shaft connected to the power distribution integration mechanism 30, and a motor MG2 connected to the reduction gear 35; A hybrid electronic control unit 70 for controlling the entire power output device.
[0018]
The engine 22 is an internal combustion engine that consumes hydrocarbon fuel such as gasoline or light oil supplied from a fuel tank 23 and outputs power, and inputs signals from various sensors that detect the operating state of the engine 22. Operation control such as fuel injection control, ignition control, and intake air amount adjustment control is performed by an electronic control unit (hereinafter, referred to as an engine ECU) 24. The engine ECU 24 is in communication with the hybrid electronic control unit 70, controls the operation of the engine 22 according to a control signal from the hybrid electronic control unit 70, and, if necessary, transmits data on the operating state of the engine 22 to the hybrid electronic control unit. Output to the unit 70.
[0019]
The power distribution and integration mechanism 30 includes a sun gear 31 of an external gear, a ring gear 32 of an internal gear arranged concentrically with the sun gear 31, a plurality of pinion gears 33 meshing with the sun gear 31 and meshing with the ring gear 32, A carrier 34 that holds the plurality of pinion gears 33 so as to rotate and revolve freely is provided, and is configured as a planetary gear mechanism that performs a differential action by using the sun gear 31, the ring gear 32, and the carrier 34 as rotating elements. In the power distribution and integration mechanism 30, the carrier 34 is connected to the crankshaft 26 of the engine 22, the sun gear 31 is connected to the motor MG1, and the ring gear 32 is connected to the reduction gear 35 via a ring gear shaft 32a. When functioning as a generator, the power from the engine 22 input from the carrier 34 is distributed to the sun gear 31 and the ring gear 32 according to the gear ratio. When the motor MG1 functions as an electric motor, the engine input from the carrier 34 is used. The power from the motor 22 and the power from the motor MG1 input from the sun gear 31 are integrated and output to the ring gear 32 side. The power output to the ring gear 32 is finally output from the ring gear shaft 32a to the drive wheels 63a and 63b of the vehicle via the gear mechanism 60 and the differential gear 62.
[0020]
Each of the motors MG1 and MG2 is configured as a well-known synchronous generator motor that can be driven as a generator and can also be driven as a motor, and exchanges power with the battery 50 via the inverters 41 and 42. Power line 54 connecting inverters 41 and 42 and battery 50 is configured as a positive bus and a negative bus shared by inverters 41 and 42, and supplies power generated by one of motors MG 1 and MG 2 to another. It can be consumed by a motor. Therefore, battery 50 is charged and discharged by electric power generated from one of motors MG1 and MG2 or insufficient electric power. If it is assumed that the electric power balance is balanced by the motors MG1 and MG2, the battery 50 is not charged or discharged. The motors MG1 and MG2 are both driven and controlled by a motor electronic control unit (hereinafter referred to as a motor ECU) 40. The motor ECU 40 detects signals necessary for controlling the driving of the motors MG1 and MG2, for example, signals from rotation position detection sensors 43 and 44 for detecting the rotation positions of the rotors of the motors MG1 and MG2 and detection by a current sensor (not shown). The motor ECU 40 outputs a switching control signal to the inverters 41 and 42, for example. The motor ECU 40 communicates with the hybrid electronic control unit 70, controls the driving of the motors MG1 and MG2 according to the control signal from the hybrid electronic control unit 70, and outputs data on the operating state of the motors MG1 and MG2 as necessary. Output to the hybrid electronic control unit 70.
[0021]
The battery 50 is managed by a battery electronic control unit (hereinafter referred to as a battery ECU) 52. A signal necessary for managing the battery 50, such as a voltage between terminals from a voltage sensor (not shown) provided between terminals of the battery 50, a power line 54 connected to an output terminal of the battery 50, The charging / discharging current from the attached current sensor (not shown), the battery temperature Tb from the temperature sensor 51 attached to the battery 50, and the like are input. If necessary, data on the state of the battery 50 is communicated to the hybrid electronic device. Output to the control unit 70. The battery ECU 52 also calculates the remaining capacity (SOC) based on the integrated value of the charge / discharge current detected by the current sensor to manage the battery 50.
[0022]
The hybrid electronic control unit 70 is configured as a microprocessor having a CPU 72 as a center. In addition to the CPU 72, a ROM 74 for storing a processing program, a RAM 76 for temporarily storing data, an input / output port (not shown) Port. The hybrid electronic control unit 70 receives a fuel remaining amount Qf from a fuel gauge 23 a attached to the fuel tank 23, an ignition signal from an ignition switch 80, and a shift position sensor 82 for detecting an operation position of a shift lever 81. The shift position SP, the accelerator opening Acc from an accelerator pedal position sensor 84 that detects the amount of depression of an accelerator pedal 83, the brake pedal position BP from a brake pedal position sensor 86 that detects the amount of depression of a brake pedal 85, and the vehicle speed sensor 88 Is input via an input port. A lighting signal to the fuel lamp 90 from the hybrid electronic control unit 70 is output via an output port. As described above, the hybrid electronic control unit 70 is connected to the engine ECU 24, the motor ECU 40, and the battery ECU 52 via the communication port, and exchanges various control signals and data with the engine ECU 24, the motor ECU 40, and the battery ECU 52. ing.
[0023]
In the hybrid vehicle 20 of the embodiment configured as described above, the required torque to be output to the ring gear shaft 32a as the drive shaft is calculated based on the accelerator opening Acc and the vehicle speed V corresponding to the amount of depression of the accelerator pedal 83 by the driver. Then, the operation of engine 22, motor MG1, and motor MG2 is controlled such that the required power corresponding to the required torque is output to ring gear shaft 32a. As the operation control of the engine 22, the motor MG1, and the motor MG2, the operation of the engine 22 is controlled so that the power corresponding to the required power is output from the engine 22, and all of the power output from the engine 22 is transmitted to the power distribution integration mechanism 30. And the torque conversion operation mode for driving and controlling the motors MG1 and MG2 so that the torque is converted by the motor MG1 and the motor MG2 and output to the ring gear shaft 32a. The operation of the engine 22 is controlled so that the corresponding power is output from the engine 22, and all or a part of the power output from the engine 22 with the charging and discharging of the battery 50 is partially or completely converted to the power distribution and integration mechanism 30, the motor MG 1, and the motor The required power accompanies the ring gear shaft 32 with torque conversion by the MG2. Charge / discharge operation mode in which the motor MG1 and the motor MG2 are drive-controlled so as to be output to the motor drive mode in which the operation of the engine 22 is stopped and the power corresponding to the required power from the motor MG2 is output to the ring gear shaft 32a. and so on.
[0024]
Next, an operation of the hybrid vehicle 20 according to the embodiment configured as described above, particularly an operation at the time of setting the SOC center SC for managing the remaining capacity (SOC) of the battery 50 will be described. Here, the SOC center SC charges the battery 50 in the charge / discharge operation mode within a range where the power required by the driver can be output when the remaining capacity (SOC) of the battery 50 falls below this value, and the remaining capacity (SOC) Exceeds this value, it is used as a reference value for charging the battery 50 for releasing the charge / discharge operation mode. FIG. 2 is a flowchart illustrating an example of an SOC center setting processing routine executed by the hybrid electronic control unit 70 of the embodiment. This routine is repeatedly executed at predetermined time intervals.
[0025]
When the SOC center setting processing routine is executed, the CPU 72 of the hybrid electronic control unit 70 first reads the remaining fuel amount Qf from the fuel gauge 23a attached to the fuel tank 23 (step S100), and reads the read fuel. A process for comparing the remaining amount Qf with the threshold value Qref is executed (step S110). Here, the threshold value Qref is set to determine when the remaining fuel amount Qf of the fuel tank 23 becomes small and becomes an amount that should give a warning to the driver. % Or 10%.
[0026]
When the remaining fuel amount Qf is equal to or greater than the threshold value Qref, it is determined that sufficient fuel is in the fuel tank 23, the normal value S1 is set in the SOC center SC (step S120), and this routine ends. On the other hand, when the remaining fuel amount Qf is less than the threshold value Qref, it is determined that the remaining fuel amount is small, the fuel lamp 90 is turned on (step S130), and a value S2 larger than the value S1 is set to the SOC center SC (step S120). Then, this routine ends. Here, any value can be used as the value set at the SOC center SC as long as the value of the remaining capacity (SOC) is in the range of 0% to 100%, but it is necessary to manage the charge and discharge of the battery 50. For example, various settings can be made such as 50% and 60% for S1 and S2, and 60% and 70%.
[0027]
FIG. 3 is an explanatory diagram showing an example of a time change of the remaining fuel amount Qf and the remaining capacity (SOC), a lighting state of the fuel lamp 90, and a time change of the charging of the battery 50. As shown in the figure, the value S1 is set in the SOC center SC until the fuel remaining amount Qf reaches the threshold value Qref, so that when the remaining capacity (SOC) becomes less than the value S1, the battery 50 is charged. In this state, the remaining capacity (SOC) of the battery 50 is managed around the value S1. At time t1 when the remaining fuel amount Qf reaches the threshold value Qref, the fuel lamp 90 is turned on, and a value S2 larger than the value S1 is set at the SOC center SC. Therefore, after the time t1, the battery 50 is charged until the remaining capacity (SOC) exceeds the value S2 even if the remaining capacity (SOC) becomes larger than the value S1. That is, the remaining capacity (SOC) of the battery 50 is managed around a value S2 larger than the value S1.
[0028]
In this embodiment, when the remaining fuel amount Qf decreases, a large value is set in the SOC center SC to increase the remaining capacity (SOC) of the battery 50. The hybrid vehicle 20 of the embodiment can run in the motor operation mode in which the operation of the engine 22 is stopped and the power corresponding to the required power from the motor MG2 is output to the ring gear shaft 32a. The vehicle can be driven even after the fuel has been completely consumed. The running distance in this case depends on the remaining capacity (SOC), and the running distance can be made longer by setting the remaining capacity (SOC) higher than usual as in the embodiment. As a result, it is possible to reduce anxiety that the driver cannot travel when the fuel in the fuel tank 23 is completely consumed. That is, the driver's sense of security can be increased.
[0029]
According to the hybrid vehicle 20 of the embodiment described above, by setting a large value at the SOC center SC when the fuel remaining amount Qf becomes small, the remaining capacity (SOC) of the battery 50 is increased to increase the fuel tank 23. The traveling distance when the fuel is completely consumed can be increased. As a result, it is possible to reduce anxiety that the driver cannot travel.
[0030]
In the hybrid vehicle 20 of the embodiment, the fuel lamp 90 is turned on and the SOC center SC is set by comparing the fuel remaining amount Qf with the threshold value Qref. The SOC center SC may be set based on whether or not the lit fuel lamp 90 is lit.
[0031]
Further, in the hybrid vehicle 20 of the embodiment, the SOC center SC is set to a value S2 larger than the normal value S1 when the fuel remaining amount Qf becomes smaller than the threshold value Qref. When the value becomes lower than the range, the usage range of the remaining capacity (SOC) of the battery 50 may be set as a usage range in which the lower limit is shifted to be higher than the upper limit from the normal usage range.
[0032]
In the hybrid vehicle 20 of the embodiment, the value S1 is set at the SOC center SC until the fuel remaining amount Qf becomes less than the threshold value Qref, and after the fuel remaining amount Qf becomes less than the threshold value Qref, the SOC center SC becomes less than the value S1. Although a large value S2 is set,
As the fuel remaining amount Qf becomes smaller, a larger value may be set as the SOC center SC. In this case, the SOC center SC may be set to be larger in a plurality of stages, such as two or three stages.
[0033]
In the hybrid vehicle 20 of the embodiment, the power of the motor MG2 is changed by the reduction gear 35 and output to the ring gear shaft 32a. However, as illustrated in the hybrid vehicle 120 of the modified example of FIG. The axle to which the shaft 32a is connected (the axle to which the drive wheels 63a and 63b are connected) may be connected to a different axle (the axle connected to the wheels 64a and 64b in FIG. 4).
[0034]
In the hybrid vehicle 20 of the embodiment, the power of the engine 22 is output to the ring gear shaft 32a as the drive shaft connected to the drive wheels 63a and 63b via the power distribution and integration mechanism 30, but the modification shown in FIG. The hybrid vehicle 220 includes an inner rotor 232 connected to the crankshaft 26 of the engine 22 and an outer rotor 234 connected to a drive shaft that outputs power to the drive wheels 63a and 63b. May be provided with a pair rotor motor 230 that transmits a part of the power to the drive shaft and converts the remaining power into electric power.
[0035]
In addition to these embodiments and modifications thereof, the present invention can be applied to any type of vehicle that can generate a battery with fuel consumption and charge the battery and that can be driven by a motor. For example, the battery may be charged with electric power generated by a generator connected to an engine crankshaft, and may be applied to a hybrid vehicle that runs using electric power from the battery, or the electric power generated by a fuel cell may be applied to a battery. The present invention may be applied to a fuel cell vehicle that runs while using electric power from a battery while being charged.
[0036]
As described above, the embodiments of the present invention have been described using the examples. However, the present invention is not limited to these examples, and may be implemented in various forms without departing from the gist of the present invention. Obviously you can get it.
[Brief description of the drawings]
FIG. 1 is a configuration diagram schematically showing a configuration of a hybrid vehicle 20 according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating an example of an SOC center setting processing routine executed by a hybrid electronic control unit 70 according to the embodiment;
FIG. 3 is an explanatory diagram showing an example of a time change of a remaining fuel amount Qf and a remaining capacity (SOC), a lighting state of a fuel lamp 90, and a time change of charging of a battery 50;
FIG. 4 is a configuration diagram schematically illustrating a configuration of a hybrid vehicle 120 according to a modified example.
FIG. 5 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 220 of a modified example.
[Explanation of symbols]
20, 120, 220 hybrid vehicle, 22 engine, 23 fuel tank, 23a fuel gauge, 24 engine electronic control unit (engine ECU), 26 crankshaft, 28 damper, 30 power distribution integration mechanism, 31 sun gear, 32 ring gear, 32a Ring gear shaft, 33 pinion gear, 34 carrier, 35, 135 reduction gear, 40 electronic control unit for motor (motor ECU), 41, 42 inverter, 43, 44 rotation position detection sensor, 50 battery, 51 temperature sensor, 52 battery Electronic control unit (battery ECU), 54 power line, 60 gear mechanism, 62 differential gear, 63a, 63b, 64a, 64b drive wheels, 70 hybrid electronic control unit, 72 CPU, 74 ROM, 76 RAM, 80 igni Switch, 81 shift lever, 82 shift position sensor, 83 accelerator pedal, 84 accelerator pedal position sensor, 85 brake pedal, 86 brake pedal position sensor, 88 vehicle speed sensor, 193a, 193b wheels, 230 rotor motor, 232 inner rotor 234 Outer rotor, MG1, MG2 motor.

Claims (12)

An electric vehicle that can run with power from an electric motor,
Power generation means for generating power with consumption of fuel;
Power storage means for storing power using the power from the power generation means and supplying power to the electric motor,
Remaining amount detecting means for detecting the remaining amount of fuel supplied to the power generating means,
A use mode setting unit that sets a use mode of the power storage unit based on the detected remaining amount of fuel;
Control means for controlling the electric motor and the power generation means so that the power storage means is used in the use mode set by the use mode setting means and power is output according to a driver's request. Car. 2. The electric vehicle according to claim 1, wherein the use mode setting unit is a unit that sets the use mode as a tendency that the smaller the detected remaining amount of fuel is, the larger the amount of power stored in the power storage unit is. The electric vehicle according to claim 2, wherein the use mode setting unit is a unit that sets a use range of the power storage unit based on an amount of stored power as the use mode. The usage mode setting means sets a first usage range when the detected remaining fuel amount is equal to or more than a predetermined amount, and sets the first usage range when the detected remaining fuel amount is less than a predetermined amount. The electric vehicle according to claim 3, wherein the electric vehicle is a means for setting a second use range having a larger amount of stored power. The electric vehicle according to claim 2, wherein the use mode setting unit is a unit that sets a charging reference value for charging the power storage unit as the use mode. The usage mode setting means sets a first value as the charging reference value when the detected remaining amount of fuel is equal to or more than a predetermined amount, and sets the first value as the charging reference value when the detected remaining amount of fuel is less than a predetermined amount. The electric vehicle according to claim 5, wherein the electric vehicle is a unit that sets a second value larger than the first value as the charging reference value. The electric vehicle according to claim 4, further comprising a warning unit that warns a driver of the remaining amount of fuel when the remaining amount of fuel detected by the remaining amount detection unit is less than the predetermined amount. The electric vehicle according to any one of claims 1 to 7, wherein the power generation unit includes an internal combustion engine and a generator that generates power by using at least a part of power from the internal combustion engine. The electric vehicle according to claim 8, wherein the power generation unit is a unit capable of outputting a part of the power from the internal combustion engine to an axle. The power generation means has three shafts connected to an output shaft of the internal combustion engine, a drive shaft connected to the axle, and a rotation shaft of the generator, and inputs and outputs to any two of the three shafts. The electric vehicle according to claim 9, further comprising a three-axis power input / output unit that inputs / outputs power to the remaining shaft based on the power to be applied. The generator has a first rotor connected to an output shaft of the internal combustion engine, and a second rotor connected to the axle via a drive shaft, based on the electromagnetic action of both rotors. The electric vehicle according to claim 9, wherein the electric vehicle is a paired rotor motor capable of outputting a part of the power of the internal combustion engine to the drive shaft with input and output of electric power. A motor capable of outputting at least a part of the driving power, a power generation unit that generates power with fuel consumption, and a power storage unit configured to store power using the power from the power generation unit and to supply power to the motor, An electric vehicle control method comprising:
(A) detecting the remaining amount of fuel to be supplied to the power generation means,
(B) setting a use mode of the power storage means based on the detected remaining amount of fuel;
(C) A control method for an electric vehicle, wherein the electric storage means is used in the set use mode and the electric motor and the power generation means are controlled so as to output power according to a driver's request.

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