JP2014083979A - Hybrid type vehicle and power supply method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hybrid type vehicle and a power supply method therefor, capable of supplying power to a charging device outside the hybrid type vehicle, and preventing the vehicle from becoming impossible to travel by itself by setting an upper limit of supply power to a power receiving device.SOLUTION: A hybrid type vehicle 1 comprises: storage battery determination means 20 for determining whether or not to supply electric power from a storage battery 6 to a power receiving device 41 on the basis of a voltage of the storage battery 6 detected by voltage detecting means 18; storage battery discharge means 22 causing the storage battery 6 to discharge when electric power can be supplied from the storage battery 6; supply voltage setting means 21 for regulating the amount of charge to the power receiving device 41; fuel determination means 42 for actuating an internal combustion engine 12 and a power generator 14 and determining whether or not to supply electric power to an electric vehicle 4 on the basis of a residual amount of fuel detected by fuel detecting means 38; and internal combustion engine drive means 44 for actuating the internal combustion engine 12 and the power generator 14 to generate electric power when the determination result by the fuel determination means 42 indicates that electric power can be supplied.

Description

  The present invention relates to a hybrid vehicle including a generator that generates electric power using a driving force of an internal combustion engine and an electric motor that operates with electric power from a chargeable / dischargeable storage battery, and a power supply method for the hybrid vehicle.

In recent years, electric vehicles using an electric motor as a driving force source, such as electric vehicles and hybrid vehicles, have begun to spread. The electric vehicle includes a storage battery for supplying electric power to the electric motor.
Among electric vehicles, a hybrid vehicle having an internal combustion engine operates the generator by the internal combustion engine even when the voltage or charging rate of the storage battery is below the lower limit value and the battery cannot be discharged. Can be charged, or the driving force of the internal combustion engine can be transmitted to the wheels. However, an electric vehicle that does not have an internal combustion engine cannot run on its own when the voltage or charging rate of the storage battery is lower than the lower limit.

Thus, for example, Patent Document 1 discloses an automatic guided vehicle that supplies electric power from another electric vehicle to an electric vehicle that requires charging.
This automatic guided vehicle communicates with a stopped automatic delivery vehicle by communication means, calculates battery information or / and navigation information, etc., compares its own information with received information by the control means, and performs charging. The automatic guided vehicle to be charged, the automatic guided vehicle to be charged, and the automatic guided vehicle to be charged and not charged as necessary are determined, and the own vehicle and others are determined by using the connection means. Is connected to the automatic guided vehicle, and charging is performed by switching the connection state using the switch means.
A technique for automatically performing restoration work of an automated guided vehicle due to battery exhaustion is disclosed.

JP-A-11-285109

  However, in Patent Document 1, there is no description of means for monitoring the voltage on the power supply side, that is, means for regulating the power supply amount on the supply side, so there is a possibility of excessive power supply. The vehicle has a problem that the vehicle may become unable to run.

  Therefore, the present invention is an invention made in view of the above-described state of the art, and can supply power to a charging device outside the hybrid vehicle and set an upper limit value of power supplied to the power receiving device. Thus, an object of the present invention is to provide a hybrid vehicle and a power supply method for the hybrid vehicle that prevent the vehicle from becoming self-propelled.

The present invention is an invention made in view of the problems in the prior art as described above,
A generator for generating electricity by the driving force of the internal combustion engine;
A storage battery capable of charging or discharging the power generated by the generator;
An electric motor that operates with electric power from the storage battery,
A hybrid vehicle capable of traveling by power from at least one of the internal combustion engine and the electric motor,
Voltage detection means for detecting the voltage of the storage battery;
Fuel detection means for detecting a remaining amount of fuel for operating the internal combustion engine;
Storage battery determination means for determining that the electric power from the storage battery can be supplied to an external power receiving device of the hybrid vehicle when the voltage of the storage battery detected by the voltage detection means is greater than or equal to a preset voltage threshold value. When,
When the determination result by the storage battery determination means can supply power from the storage battery, the storage battery discharge means for discharging from the storage battery;
When the remaining amount of fuel detected by the fuel detection means is greater than or equal to a preset remaining fuel threshold, the generator can be operated by the driving force of the internal combustion engine to supply power to the charging device Fuel determination means for determining
An internal combustion engine that generates electric power by operating the internal combustion engine and operating the generator by the driving force of the internal combustion engine when the determination result by the fuel determination means is that electric power can be supplied by the operation of the internal combustion engine. Engine driving means;
Supply voltage setting means for setting an upper limit value of the supply voltage from the storage battery to the power receiving device when it is determined that the determination result by the storage battery determining means can be supplied to the power receiving device;
There is provided a hybrid vehicle comprising: power supply means for supplying power to the power receiving device based on a set voltage of the supply voltage setting means.

  According to the present invention, the hybrid vehicle configured as described above can supply electric power by operating a generator by an internal combustion engine and storage battery determination means for determining whether or not discharge from the storage battery is possible. Since there is a determination means for determining whether or not and a supply voltage setting means for setting a supply voltage from the storage battery, the battery is discharged from the storage battery when the voltage (charge rate) of the storage battery is high or when the fuel is sufficient The electric power generated or the electric power generated by the generator can be supplied to the outside of the hybrid vehicle, for example, a power receiving device such as an electric vehicle or a house, and the upper limit value of the amount of power supplied to the power receiving device can be set by the supply voltage setting means. By setting, the excessive power supply of the storage battery of a hybrid vehicle is prevented.

  Further, in the present invention, preferably, it has an ammeter for measuring a current supplied to the outside by the power supply means, and when a measurement result by the ammeter is equal to or lower than a preset current threshold value, The power supply means may stop power supply.

According to the present invention, when the power receiving device side includes a storage battery or the like, the charging state of the storage battery or the like on the power receiving device side can be detected by measuring the current supplied to the outside with an ammeter. (If the voltage difference between the set voltage and the storage battery on the power receiving device decreases, the amount of current also decreases.)
Therefore, a change in the amount of current to the power receiving apparatus is monitored by setting the supply voltage with the supply voltage setting means. As a result, power supply exceeding the limit (current threshold) to the power receiving device side can be stopped, and fuel shortage necessary for operation of the internal combustion engine on the hybrid vehicle side can be prevented and fuel consumption can be reduced.

  In the present invention, it is preferable that the supply voltage setting means is a secondary battery on the power reception device side when a supply cable of the power supply means for supplying electric power from the hybrid vehicle to the power reception device is connected. Or the charging rate is obtained via the supply cable, and the upper limit value of the supply voltage of the supply voltage setting means may be automatically set.

With such a configuration, the supply voltage is automatically set based on the information on the power receiving device side, so that the supply work is facilitated and the merchantability is improved.
Furthermore, since the supply voltage is automatically set, it is possible to prevent the power receiving apparatus from failing or having a reduced life due to an operation error.

  In the present invention, it is preferable that the supply voltage setting means is a secondary battery on the power reception device side when a supply cable of the power supply means for supplying electric power from the hybrid vehicle to the power reception device is connected. It is preferable to obtain the charging rate or voltage of the supply voltage via the supply cable and manually set the upper limit value of the supply voltage of the supply voltage setting means based on the obtained information.

By adopting such a configuration, it is possible to supply the minimum necessary amount until the charging device side can be self-running to a place where power can be supplied by another facility (charge rate).
Therefore, it is possible to prevent the power supply more than necessary and improve the operating rate of the hybrid vehicle.
On the other hand, by setting the rated voltage or a slightly lower voltage, the charging load of the secondary battery on the power receiving device side and the secondary battery on the supply side can be reduced, thereby preventing a decrease in battery life and charging efficiency.

  In the present invention, it is preferable that the supply voltage setting means follows the power consumption load of the power receiving device when a supply cable of the power supply means for supplying power from the hybrid vehicle to the power receiving device is connected. Set the appropriate supply voltage.

  With such a configuration, by setting the voltage manually along the load on the power receiving device side, versatility as a power supply device is widened, and an improvement in merchantability can be obtained.

Further, in the above invention, a generator for generating electric power by the driving force of the internal combustion engine;
A storage battery capable of charging or discharging the power generated by the generator;
An electric motor that operates with electric power from the storage battery,
An electric power supply method for a hybrid vehicle that supplies electric power to an external power receiving device from a hybrid vehicle that can be driven by power from at least one of the internal combustion engine and the electric motor,
A storage battery determination step of detecting a voltage of the storage battery and determining whether or not power can be supplied from the storage battery to the power receiving device based on the detected voltage;
A fuel determination step of detecting whether or not the remaining amount of fuel is detected, and determining whether or not electric power can be supplied to the outside of the vehicle by operating the generator by the driving force of the internal combustion engine based on the detected remaining amount;
A supply voltage setting step for setting an upper limit value of power supplied from the storage battery to the power receiving device when it is determined that the determination result by the storage battery determination step or the fuel determination step can be supplied to the power receiving device;
It is possible to provide a power supply method for a hybrid vehicle, comprising: a power supply step for supplying power to the power receiving device based on a set voltage in the supply voltage setting step.

According to the power supply method of the hybrid vehicle, a step of determining whether or not discharge from the storage battery is possible, and a supply voltage setting step of setting a supply voltage when it is determined that supply to an external power receiving device is possible, Power can be supplied to the power receiving device based on the set voltage.
Therefore, excessive power supply can be prevented, and self-running can be prevented.

  According to the present invention, it is possible to supply electric power to the outside, and when supplying electric power to an external charging device, the discharge state is monitored so that the electric power is not excessively discharged, thereby preventing self-running. .

It is the schematic which shows the state which is supplying the electric power from the hybrid vehicle which concerns on embodiment of this invention to the electric vehicle (passenger vehicle) which the voltage (charge rate) of the storage battery fell and became self-propelled. It is a block diagram which shows the structure of a hybrid type vehicle. It is a figure which shows the flow which supplies electric power from a hybrid type vehicle. In the block diagram which shows the supply voltage setting method of this invention, (A) shows the case where the side which receives electric power supply is an electric vehicle, (B) shows the case where the side which receives electric power does not own a secondary battery. It is a figure which shows the other Example which supplies electric power from a hybrid type vehicle. It is a figure which shows the other Example which supplies electric power from a hybrid type vehicle.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the scope of the present invention is not limited to the following embodiments. The dimensions, materials, shapes, relative arrangements, and the like of the components described in the following embodiments are merely illustrative examples and are not intended to limit the scope of the present invention only unless otherwise specified. Moreover, in the following description, although the case where a series system vehicle is used as a hybrid vehicle will be described, the present invention is not limited to this system.

FIG. 1 is a schematic diagram showing a state in which electric power is supplied from an electric vehicle (passenger car) in which the voltage (charge rate) of a storage battery is lowered to be unable to self-run from a hybrid vehicle according to an embodiment of the present invention. It is.
As shown in FIG. 1, power is supplied by connecting a supply cable 2 of a hybrid vehicle 1 to a power receiving socket (not shown) of a power receiving device 41 of an electric vehicle 4 that rescues. In the following embodiment, the case where electric power is supplied from the hybrid vehicle 1 to the electric vehicle 4 will be described, but the supply destination of electric power is not limited to the electric vehicle 4.

FIG. 2 is a block diagram showing the configuration of the hybrid vehicle 1.
As shown in FIG. 2, the hybrid vehicle 1 includes a storage battery 6, a control unit 8 for controlling the storage battery 6, a motor 10 (electric motor) that operates by discharging from the storage battery 6, and the voltage of the storage battery 6 ( An internal combustion engine 12 (internal combustion engine) that is operated when the charging rate is reduced, a generator 14 that is operated by the internal combustion engine 12, and power supply means 26 that supplies power to the electric vehicle 4 side. Yes.

The hybrid vehicle 1 is a so-called series-type vehicle that operates the internal combustion engine 12 and the generator 14 to charge the storage battery 6 when the voltage (charge rate) of the storage battery 6 decreases and continues the motor running.
In addition, when the charging rate of the storage battery 6 decreases, the voltage also decreases. Therefore, the charging rate can be known by measuring the voltage. Therefore, the following description will be made with the voltage unified.

  The control unit 8 includes an inverter 16, a voltage detection unit 18, a storage battery determination unit 20, a supply voltage setting unit 21, a storage battery discharge unit 22, a DC / DC converter 24, an AC / DC converter 25, and a CPU. And an arithmetic unit (not shown). Further, the control unit 8 has a storage unit (not shown) such as a ROM and a RAM in which software programs for realizing these means are recorded, and an arithmetic unit is stored in the storage unit as necessary. The following means are realized by reading and executing the program.

  During normal traveling, the electric power of the storage battery 6 is converted from direct current to alternating current by the inverter 16 and supplied to the motor 10 for traveling the hybrid vehicle 1.

The voltage detection means 18 of the control unit 8 detects the detection voltage Ba of the storage battery 6 and outputs the detected detection voltage Ba to the storage battery determination means 20.
When the storage battery determination unit 20 receives the detection voltage Ba output from the voltage detection unit 18, the storage battery determination unit 20 supplies power to the electric vehicle 4 when the detection voltage Ba is equal to or higher than a voltage threshold value that is a preset supply voltage upper limit value Bth. Judge that supply is possible.
If it is less than the voltage threshold, it is determined that supply is not possible.
Incidentally, a countermeasure for less than the voltage threshold will be described later.
When the storage battery determination unit 20 determines that the supply is possible, the storage battery determination unit 20 outputs the supply voltage to the supply voltage setting unit 21. The supply voltage setting means 21 determines how the power supply pressure (voltage) to the power receiving device 41 is to be set.

In the case of the electric vehicle 4, a control device (not shown) that manages the voltage Bb (charge rate) of the storage battery of the power receiving device 41 is mounted on the electric vehicle 4. Therefore, when the hybrid vehicle 1 and the electric vehicle 4 are connected by the power supply means 26 for supplying power, the information on the power acceptance voltage of the storage battery (the power receiving device 41 side) from the electric vehicle 4 side is the power supply means. 26 to the control unit 8. Based on the obtained information, the supply voltage setting means 21 sets the supply voltage.
Further, when the power supply means 26 is connected to the electric vehicle 4, the supply voltage can be set by measuring the battery voltage (charging rate) of the storage battery (power receiving device 41 side) from the hybrid vehicle 1 side. .
When the supply voltage Be is set, the supply voltage setting unit 21 sets the supply voltage Be when the detection voltage Ba detected by the voltage detection unit 18 is equal to or higher than a preset voltage threshold Bht, and the set supply voltage Be. Is output to the storage battery discharging means 22.
On the other hand, the storage battery determination unit 20 determines that power cannot be supplied to the electric vehicle 4 when the detected voltage Ba detected is less than the voltage threshold. The determination result is output to the fuel determination means 42 described later.

When the storage battery discharging unit 22 receives the determination result indicating that the power can be supplied from the storage battery determining unit 20, the storage battery discharging unit 22 discharges the storage battery 6 and supplies the electric vehicle 4 with the electric power. At this time, the electric power discharged from the storage battery 6 is converted into a voltage capable of charging the electric vehicle 4 by the DC / DC converter 24 based on the voltage Be set by the supply voltage setting means 21, and the power supply means 26 is changed. To be supplied to the electric vehicle 4.
Next, the power supply means 26 will be described.

The power supply means 26 includes a charge / discharge connector 28 that can be connected to the power receiving socket of the power receiving device 41 attached to the electric vehicle 4, one end connected to the charge / discharge connector 28, and the other end connected to the control unit 8. And the relay switch 30 provided in the middle of the supply cable 2.
The supply cable 2 of the power supply means 26 is provided with a communication means for obtaining information on the storage battery of the electric vehicle 4 from a control device (not shown) of the electric vehicle 4.
The storage battery discharging means 22 controls the on / off state of the relay switch 30, whereby the electric power from the storage battery 6 can be supplied to the electric vehicle 4. The initial state of the relay switch 30 is an off state. When the storage battery discharging unit 22 receives a determination result indicating that power can be supplied from the storage battery determining unit 20, the storage battery discharging unit 22 controls the relay switch 30 to be in an ON state.

The discharge cable 2 is provided with an ammeter 34, and the current value is always measured while supplying electric power to the electric vehicle 4. The measured current value is output to the power supply stopping unit 46 described later.
By the way, when the charging of the storage battery on the electric vehicle 4 side is continued, the voltage of the storage battery (power receiving device 41 side) also increases. When there is no difference between the voltage of the storage battery and the set voltage, no current flows through the supply cable 2.
By measuring the current flowing through the supply cable 2 with the ammeter 34, the initial charging of the storage battery of the electric vehicle 4 is completed.
Therefore, whether the storage battery of the electric vehicle 4 is in a chargeable state capable of traveling to other power supply facilities or a state where the charging rate is 100% varies depending on the set voltage.

When the current value measured by the ammeter 34 is equal to or lower than a preset current threshold, the power supply stopping unit 46 determines that the storage battery on the electric vehicle 4 side has been charged, and sends a charge completion signal to the storage battery discharging unit 22. Output to.
When the storage battery discharging unit 22 receives the charging completion signal from the power supply stopping unit 46, the storage battery discharging unit 22 controls the relay switch 30 to be in an OFF state and stops the power supply from the storage battery 6.

Next, when the voltage (charge rate) of the storage battery 6 is less than the voltage threshold, power is supplied to the electric vehicle 4 having the power receiving device 41 that stores the power generated by operating the generator 14 by the internal combustion engine 12. A method will be described.
The hybrid vehicle 1 includes a fuel tank 36 that stores fuel for operating the internal combustion engine 12, fuel detection means 38 that detects the remaining amount of fuel in the fuel tank 36, and an ECU 40 that controls the internal combustion engine 12 and the like. Are further provided.
The fuel detection means 38 outputs the detected remaining amount of fuel to the fuel determination means 42 in the ECU 40.
The ECU 40 includes a fuel determination unit 42, an internal combustion engine drive unit 44, and a power supply stop unit 46.

When the fuel determination unit 42 receives the determination result that the storage battery determination unit 20 cannot supply power from the storage battery 6, the fuel determination unit 42 determines whether the internal combustion engine is based on the remaining amount of fuel detected by the fuel detection unit 38. The electric motor 14 is operated by the driving force of 12 to determine whether or not electric power can be supplied to the electric vehicle 4.
The fuel determination means 42 determines that electric power can be supplied when the remaining amount of fuel is equal to or greater than a preset remaining fuel threshold value.

When the fuel determination unit 42 determines that electric power can be supplied to the electric vehicle 4, the fuel determination unit 42 outputs the determination result to the internal combustion engine drive unit 44.
On the other hand, the fuel determination unit 42 determines that electric power cannot be supplied to the electric vehicle 4 when the remaining fuel amount Fa is less than a predetermined fuel remaining amount threshold value. In that case, the fuel determination means 42 issues a warning.
As for the warning method, the warning lamp 48 can be turned on or an alarm buzzer (not shown) can be used, and the warning lamp 48 and the alarm buzzer can be used in combination.
Alternatively, the empty lamp of the hybrid vehicle 1 may be turned on. In this case, the cost of the alarm device can be reduced.

  When the internal combustion engine drive unit 44 of the ECU 40 receives the determination result that the electric power can be supplied from the fuel determination unit 42, the internal combustion engine 12 and the generator 14 are operated, and the relay switch 30 is turned on / off. To supply electric power to the electric vehicle 4. Specifically, the internal combustion engine drive unit 44 controls the relay switch 30 to be in an ON state upon receiving a determination result indicating that electric power can be supplied from the fuel determination unit 42.

At this time, the electric power supplied from the generator 14 is converted into direct current by the AC / DC converter 25 in the control unit 8 and supplied to the electric vehicle 4 via the power supply means 26.
In the present embodiment, the case where the electric power generated by operating the generator 14 is supplied to the electric vehicle 4 via the AC / DC converter 25 of the control unit 8 has been described. However, the present invention is not limited to this. The electric power generated by operating the generator 14 may be temporarily charged in the storage battery 6, and then discharged from the storage battery 6 to supply the electric power to the electric vehicle 4.

Then, when charging of the storage battery of the electric vehicle 4 is completed and no current flows through the discharging cable 2 and the current value measured by the ammeter 34 falls below the current threshold value, the power supply stopping means 46 As a result, the charging completion signal is output to the internal combustion engine driving means 44.
When the internal combustion engine drive unit 44 receives the charge completion signal from the power supply stop unit 46, the internal combustion engine drive unit 44 stops the internal combustion engine 12 and controls the relay switch 30 to be turned off to stop the power supply from the generator 14.

A method for charging the storage battery of the electric vehicle 4 using the hybrid vehicle 1 having the above-described configuration will be described below with reference to a flowchart.
First, in step S <b> 1, the hybrid vehicle 1 is stopped near the electric vehicle 4 having the power receiving device 41 to be rescued, and the discharging cable 2 of the hybrid vehicle 1 is connected to the charging socket of the power receiving device 41 of the electric vehicle 4. Connect to and start.
Next, in step S <b> 2, the voltage detection means 18 of the control unit 8 detects the detection voltage Ba of the storage battery 6 of the hybrid vehicle 1. Subsequently, the voltage detection unit 18 outputs the detected detection voltage Ba to the storage battery determination unit 20.

In step S <b> 3, when the storage battery determination unit 20 receives the detection voltage Ba output from the voltage detection unit 18, the storage battery determination unit 20 determines whether or not the detection voltage Ba is equal to or higher than a voltage threshold value that is the supply voltage upper limit value Bth.
The storage battery determination unit 20 determines that power can be supplied from the storage battery 6 to the electric vehicle 4 when the detected voltage Ba is equal to or higher than the voltage threshold.
When it is determined that power can be supplied from the storage battery 6 to the electric vehicle 4, the storage battery determination means 20 outputs the determination result to the supply voltage setting means 21 in step S4.
In step S <b> 4, the supply voltage setting means 21 obtains information about the voltage Bb of the storage battery on the electric vehicle 4 side from the power control device of the electric vehicle 4 via the discharge cable 2.
The supply voltage setting means 21 outputs the result of the arbitrarily set supply voltage Be to the storage battery discharge means 22 based on the information from the electric vehicle 4.
On the other hand, when it is determined that power cannot be supplied from the storage battery 6 to the electric vehicle 4, the storage battery determination unit 20 outputs the determination result to the fuel determination unit 42.

The storage battery discharging means 22 that has received the setting result of the supply voltage Be from the supply voltage setting means 21 sets the supply voltage based on the setting result, and controls the relay switch 30 of the power supply means 26 to be in an ON state (step S5). ). Thereby, the electric power from the storage battery 6 can be supplied to the electric vehicle 4. At this time, the electric power discharged from the storage battery 6 is converted by the DC / DC converter 24 into a set voltage according to the acceptance conditions of the electric vehicle 4 and supplied to the electric vehicle 4 via the power supply means 26. When the supply of power is started, the process proceeds to step S6.
In step S6, the ammeter 34 monitors the state in which the current value Ia flows based on the supply voltage Be set by the supply voltage setting means 21.

On the other hand, if the storage battery determination means 20 determines in step S3 that power cannot be supplied, it selects No and proceeds to step S9.
In step S <b> 9, the fuel determination unit 42 that has received the determination result indicating that power cannot be supplied from the storage battery determination unit 20 detects the remaining fuel amount Fa using the fuel detection unit 38.
In step S <b> 10, the fuel determination unit 42 determines whether or not the fuel remaining amount Fa detected by the fuel detection unit 38 is equal to or greater than a fuel remaining amount threshold value that is a fuel remaining limit value Fth.
The fuel determination unit 42 determines that electric power can be supplied to the electric vehicle 4 by operating the generator 14 by the internal combustion engine 12 when the remaining amount Fa of the fuel is equal to or greater than the remaining fuel threshold value.

And if the fuel determination means 42 determines with being able to supply electric power to the electric vehicle 4, Yes will be selected and it will progress to step S11.
In step S11, the internal combustion engine drive unit 44 that has received the determination result indicating that electric power can be supplied from the fuel determination unit 42 controls the relay switch 30 to be in an on state, and operates the internal combustion engine 12 and the generator 14. .
The power generated in step S11 proceeds to step S4 and is supplied to the electric vehicle 4.
At this time, the electric power supplied from the generator 14 is converted into direct current by the AC / DC converter in the control unit 8 and supplied to the electric vehicle 4 via the power supply means 26.
The electric power generated in step S11 is controlled to proceed to step S4.
This increases the efficiency of charging the power receiving device 41 by passing the storage battery 6 of the hybrid vehicle 1 so that a negative charge efficiency generated in the storage battery 6 is not added to the power receiving device 41.

When electric power generated by the discharge from the storage battery 6 or the generator 14 is supplied to the electric vehicle 4, the current flowing through the discharge cable 2 is obtained by calculating the current value Ia based on the set voltage (step S 4) as an ammeter. It is measured at 34.
Then, the power supply stopping unit 46 determines whether or not the current value Ia measured by the ammeter 34 is equal to or less than the current threshold value that is the current upper limit value Ith (step S6).
When the current value Ia measured by the ammeter 34 is larger than the current threshold value Ith, it is determined that the charging of the electric vehicle 4 is not completed, and step S2 for detecting the detection voltage Ba of the storage battery 6 is performed again. To do.
On the other hand, when the current value Ia measured by the ammeter 34 is equal to or smaller than the current threshold value, it is determined that the charging of the electric vehicle 4 is completed, and the process proceeds to step S7.
The power supply stop means 46 outputs to the storage battery discharge means 22 or the internal combustion engine drive means 44 that the charging of the electric vehicle 4 has been completed. At this time, the power supply stop means 46 outputs to the storage battery discharge means 22 when power is supplied from the storage battery 6, and outputs to the internal combustion engine drive means 44 when power is supplied from the generator 14. To do.

  The storage battery discharge means 22 or the internal combustion engine drive means 44 that has received the output indicating that the charging of the electric vehicle 4 has been completed from the power supply stop means 46 controls the relay switch 30 to the OFF state, and discharges from the storage battery 6 or The internal combustion engine 12 is stopped and power supply is stopped (step S7). In step S8, the power supply ends.

  As described above, according to the hybrid vehicle 1 according to the present embodiment, the storage battery determination unit 20 that determines whether or not the storage battery 6 can be discharged and the internal combustion engine 12 can operate the generator 14 to supply power. The fuel determination means 42 for determining whether or not the fuel is supplied and the supply voltage is provided, so that the remaining amount of fuel is the fuel when the detection voltage Ba of the storage battery 6 is equal to or higher than the voltage threshold or even when the detection voltage Ba of the storage battery 6 is less than the voltage threshold. Electric power can be supplied to the electric vehicle 4 when the remaining amount threshold value is exceeded. Therefore, when the detection voltage Ba of the storage battery 6 is low and the fuel is low, power is not supplied. As a result, it is possible to prevent the hybrid vehicle 1 from running out of fuel due to power supply and being unable to run on its own.

  When the charging of the storage battery of the electric vehicle 4 is completed, almost no current flows through the discharging cable 2. For this reason, the completion of charging of the storage battery of the electric vehicle 4 can be detected by measuring the value of the current flowing through the power supply means 26 with the ammeter 34. And since the electric power supply stop means 46 which stops the electric power supply from the generator 14 or the storage battery 6 when the ammeter 34 becomes less than an electric current threshold value is provided, when operating the internal combustion engine 12, for example, an internal combustion engine 12 can be stopped. Thereby, useless fuel consumption can be suppressed.

  Moreover, the storage battery determination means 20 can prevent overdischarge of the storage battery 6 by determining that electric power can be supplied to the electric vehicle 4 when the detection voltage Ba of the storage battery 6 is equal to or higher than the voltage threshold. Thereby, it can prevent that the hybrid vehicle 1 becomes self-propelled.

And the fuel determination means 42 can prevent running out of fuel by determining that electric power can be supplied to the electric vehicle 4 when the remaining amount of fuel is greater than or equal to a preset remaining fuel threshold value.
Further, the remaining fuel threshold value is an amount that allows the hybrid vehicle 1 to travel to a predetermined fuel supply location even when the internal combustion engine 12 is driven in order to supply electric power to the electric vehicle 4. Therefore, even when the fuel is consumed by the operation of the internal combustion engine 12, the vehicle can travel to the fuel supply location. As a result, it is possible to prevent the hybrid vehicle 1 after being rescued from running out of fuel and being unable to run on its own.

In the present embodiment, the case where power is supplied from the hybrid vehicle 1 to the other electric vehicle 4 has been described. However, the power supply destination is not limited to the electric vehicle 4, and for example, a truck or bus As shown in FIG.4 and FIG.5, you may supply to a house or a construction site.
For example, the reason why the supply voltage Be is set to “arbitrary voltage” in step S4 of FIG. 3 will be described.
That is, it is necessary to set the supply voltage Be on the supply side according to the situation on the power reception side.
As shown in FIG. 4A, in the case of the electric vehicle 4, an upper limit (voltage or charging rate) to be charged is determined.
The upper limit means that in step S4, the voltage (or charging rate) on the electric vehicle 4 side is set to 100% on the storage battery of the power receiving device 41 on the electric vehicle 1 side based on the storage battery information on the electric vehicle 4 side. Or whether the electric vehicle 4 is set to a necessary minimum (upper limit for charging) that can be self-propelled to other charging facilities.
In step S31, the supply voltage setting unit 21 automatically sets the supply voltage Be. Based on the set voltage of the supply voltage setting means 21, the process proceeds to step S33. In step S33, the supply voltage Be is automatically input to the storage battery discharging means 22, and power is supplied in step S5.

However, in the case of an unmanned electric vehicle that carries parts and the like in a factory, there may be a case where a control device that always grasps the usage status of the storage battery is not provided. In that case, in step S4, the operator sets the amount of power received by the unmanned electric vehicle to the minimum necessary (upper limit for charging) that can be self-propelled to other charging facilities, or the transport parts to the destination (location). Decide whether to make it self-propelled and then make the necessary minimum (upper charge) to self-propel to other charging facilities.
When the supply voltage Be is determined, the process proceeds to step S32. In step S32, the supply voltage setting means 21 is manually input. The process proceeds to step S33 based on the supply voltage Be set by the supply voltage setting means 21. In step S33, automatic input is made to the storage battery discharging means 22, and power is supplied in step S5.
Manual charging can be performed to meet the purpose of the unmanned electric vehicle.

Moreover, when supplying to a house or a construction site, the storage battery is often not provided.
In this case, as shown in FIG. 4B, in step S4, the supply voltage Be is determined as an arbitrary voltage depending on the load-side situation used in the house or construction site, and the process proceeds to step S35.
In step S35, the determined supply voltage Be is manually input to the supply voltage setting means 21. Based on the set voltage Be of the supply voltage setting means 21, the process proceeds to step S33. In step S33, automatic input is made to the storage battery discharging means 22, and power is supplied in step S5.
By doing in this way, the versatility as a power supply device spreads by setting a voltage manually along the load by the side of the power receiving apparatus 41, and the improvement effect of merchantability is acquired.

  Further, in the present embodiment, the case where a series system vehicle is used as the hybrid vehicle 1 has been described, but the present invention is not limited to this system, and can be applied to a parallel system or a split system vehicle. In short, a vehicle in which the generator 14 is provided at a position where the drive force of the internal combustion engine 12 can be cut off from being transmitted to a drive shaft such as a tire, that is, power generation using the rotation of the drive shaft such as a tire as the drive force. It is applicable to vehicles that do not have a machine.

  Moreover, in this embodiment, although the case where the storage battery determination means 20, the supply voltage setting means 21, and the storage battery discharge means 22 were provided in the control unit 8 was demonstrated, it is not limited to this, and storage battery determination is carried out to ECU40. Means 20, supply voltage setting means 21, and storage battery discharging means 22 may be provided.

The present invention can also be applied to a method called CHAdeMO (trade name of a rapid charging method for an electric vehicle) when charging the electric vehicle 4 having the power receiving device 41 from the hybrid vehicle 1.
The CHAdeMO sends the charging information of the quick charger (control unit 8) to the electric vehicle 4 side by CAN communication via the discharge cable 2 connected between the hybrid vehicle 1 and the electric vehicle 4. A charge permission signal is sent from the electric vehicle 4 side to the hybrid vehicle 1 side. Information on conditions such as a charge command value is exchanged between the hybrid vehicle 1 and the electric vehicle 4. Thereafter, a direct current is output from the hybrid vehicle 1 to the electric vehicle 4 side. The ECU on the electric vehicle 4 side designates the optimum charging current value for the hybrid vehicle 1 according to the state of the storage battery. The hybrid vehicle 1 side supplies a current value Ia based on a command sent from the ECU on the electric vehicle 4 side every moment.
In this case, the supply voltage Be changes based on a command sent from time to time from the ECU on the electric vehicle 4 side.

Therefore, the upper limit of the output voltage on the hybrid vehicle 1 side is set to limit the amount of current to be supplied. When the internal combustion engine 12 is operated to supply power, the internal combustion engine drive unit 44 turns off the relay switch 30 of the power supply unit 26 and stops the internal combustion engine 12.
When power is supplied from the storage battery 6, the storage battery discharging means 22 turns off the relay switch 30 of the power supply means 26.
Thus, the internal combustion engine 12 can suppress wasteful fuel consumption.
Further, overdischarge of the storage battery 6 can be prevented, and the hybrid vehicle 1 can be prevented from becoming unable to run on its own.

DESCRIPTION OF SYMBOLS 1 Hybrid vehicle 2 Discharge cable 4 Electric vehicle 6 Storage battery 8 Control unit 10 Motor (electric motor)
12 engine (internal combustion engine)
14 Generator 16 Inverter 18 Voltage detection means 20 Storage battery determination means 21 Supply voltage setting means 22 Storage battery discharge means 24 Converter 26 Supply means 28 Charge / discharge connector 30 Relay switch 32 Cap 34 Ammeter 36 Fuel tank 38 Fuel detection means 40 ECU
42 Fuel determination means 44 Internal combustion engine drive means 46 Power supply stop means 48 Warning lamp 50 Charging device Ba Detection voltage Bth Supply voltage upper limit (voltage threshold)
Fa Fuel remaining amount Fth Fuel remaining limit value (fuel remaining amount threshold value)
Ia Current value Ith Current upper limit (current threshold)

Claims (6)

A generator for generating electricity by the driving force of the internal combustion engine;
A storage battery capable of charging or discharging the power generated by the generator;
An electric motor that operates with electric power from the storage battery,
A hybrid vehicle capable of traveling by power from at least one of the internal combustion engine and the electric motor,
Voltage detection means for detecting the voltage of the storage battery;
Fuel detection means for detecting a remaining amount of fuel for operating the internal combustion engine;
Storage battery determination means for determining that the electric power from the storage battery can be supplied to an external power receiving device of the hybrid vehicle when the voltage of the storage battery detected by the voltage detection means is greater than or equal to a preset voltage threshold value. When,
When the determination result by the storage battery determination means can supply power from the storage battery, the storage battery discharge means for discharging from the storage battery;
When the remaining amount of fuel detected by the fuel detection means is greater than or equal to a preset remaining fuel threshold, the generator can be operated by the driving force of the internal combustion engine to supply power to the charging device Fuel determination means for determining
An internal combustion engine that generates electric power by operating the internal combustion engine and operating the generator by the driving force of the internal combustion engine when the determination result by the fuel determination means is that electric power can be supplied by the operation of the internal combustion engine. Engine driving means;
Supply voltage setting means for setting an upper limit value of the supply voltage from the storage battery to the power receiving device when it is determined that the determination result by the storage battery determining means can be supplied to the power receiving device;
A hybrid vehicle comprising: power supply means for supplying power to the power receiving device based on a set voltage of the supply voltage setting means.   The power supply means has an ammeter for measuring a current supplied to the outside by the power supply means, and when the measurement result by the ammeter is less than or equal to a preset current threshold value, the power supply means supplies power. The hybrid vehicle according to claim 1, wherein the hybrid vehicle is stopped.   The supply voltage setting means supplies the charging rate or voltage of the secondary battery on the power receiving device side when a supply cable of the power supply means for supplying power from the hybrid vehicle to the power receiving device is connected. The hybrid vehicle according to claim 1, wherein the hybrid vehicle is obtained via a cable and automatically sets an upper limit value of the supply voltage of the supply voltage setting means.   The supply voltage setting means supplies the charging rate or voltage of the secondary battery on the power receiving device side when a supply cable of the power supply means for supplying power from the hybrid vehicle to the power receiving device is connected. 3. The method according to claim 1, wherein the upper limit value of the supply voltage of the supply voltage setting means is manually set based on the obtained information obtained through a cable. Hybrid vehicle.   The supply voltage setting means sets a supply voltage along a consumption load of the power receiving device when a supply cable of the power supply means for supplying power from the hybrid vehicle to the power receiving device is connected. The hybrid vehicle according to claim 1, wherein the hybrid vehicle is a vehicle. A generator for generating electricity by the driving force of the internal combustion engine;
A storage battery capable of charging or discharging the power generated by the generator;
An electric motor that operates with electric power from the storage battery,
An electric power supply method for a hybrid vehicle that supplies electric power to an external power receiving device from a hybrid vehicle that can be driven by power from at least one of the internal combustion engine and the electric motor,
A storage battery determination step of detecting a voltage of the storage battery and determining whether or not power can be supplied from the storage battery to the power receiving device based on the detected voltage;
A fuel determination step of detecting whether or not the remaining amount of fuel is detected, and determining whether or not electric power can be supplied to the outside of the vehicle by operating the generator by the driving force of the internal combustion engine based on the detected remaining amount;
A supply voltage setting step for setting an upper limit value of power supplied from the storage battery to the power receiving device when it is determined that the determination result by the storage battery determination step or the fuel determination step can be supplied to the power receiving device;
A power supply method for a hybrid vehicle, comprising: a power supply step of supplying power to the power receiving device based on a set voltage of the supply voltage setting step.

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