JPH08154307A - Limited fuel use hybrid electric vehicle - Google Patents

Abstract

PURPOSE: To guide a driver not to depend on the engine in a limited fuel use hybrid electric vehicle. CONSTITUTION: A hybrid electric vehicle has a battery 1 to be charged by external charging means 21, a drive motor 4 for driving wheels 3A, 3B by the power of the battery 1, control means 9 for controlling the operation of the motor 4, and an internal combustion engine 7 used directly or indirectly to drive the wheels 3A, 3B, and comprises run time relational amount calculating means for calculating the amount relative to the rum time of the vehicle after the battery is charged by the means 21. The means 9 is so constituted as to limit the output of the motor when the rum time relative amount reaches a predetermined amount from the detected result of the calculating means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a series type hybrid electric vehicle having an internal combustion engine for driving a generator for generating electric power to a drive motor, or an internal combustion engine for directly driving wheels. The present invention relates to a hybrid type hybrid electric vehicle equipped with the fuel consumption limiting type hybrid electric vehicle in consideration of reducing the dependency on the internal combustion engine.

[0002]

2. Description of the Related Art In recent years, the movement to protect the global environment is intensifying. Particularly, the air pollution caused by the consumption of a large amount of fossil fuel has become a serious problem. It is a very important issue in protecting the environment. Even in automobiles, engines using fossil fuels such as gasoline and light oil are now mainstream, and in particular, air pollution due to automobile exhaust gas in a large city, especially in the urban area, is a very serious problem. Electric vehicles that do not emit exhaust gas are being reviewed.

At present, various problems remain in practical use for this electric vehicle, and although it has been put to practical use in some fields, it has not come into widespread use. Therefore, in order to make the electric vehicle more practical, various technologies are currently proposed for the electric vehicle. For example, due to the limited battery performance, in current electric vehicles, if you try to extend the mileage per charge,
It becomes necessary to mount a large amount of batteries, which significantly increases the vehicle weight and occupies a large amount of space inside the vehicle. Therefore, there is a problem that the power performance and habitability of the vehicle are deteriorated. Of course, if the amount of battery is reduced, the mileage per charge cannot be extended.

Further, in an electric vehicle, it is necessary to charge the battery as an energy source when the remaining capacity of the battery is reduced, but this battery cannot be charged as easily as gasoline replenishment at present. For this reason, when the vehicle stops on the road due to insufficient battery capacity, it is not easy to take measures against it. In order to supplement these problems of electric vehicles at the present time, so-called hybrid electric vehicles, in which an internal combustion engine is mounted in the electric vehicle itself, have been proposed.

In such a hybrid electric vehicle,
There are so-called series hybrid electric vehicles and parallel hybrid electric vehicles. For example, FIG. 8 is a schematic configuration diagram showing a series-type hybrid electric vehicle. In FIG. 8, 1 is a generator 6 mounted on the vehicle.
(This will be described later) or a battery that can be repeatedly charged by an external charger (not shown) that is not equipped in the vehicle, and 2 is a motor (running electric motor) supplied with power from the battery 1. The motor 2 drives the drive wheels 3A and 3B of the automobile.

The output of the motor 2 is output by the motor controller (motor control means) 4 based on the output request operation of the driver (that is, the depression state of the accelerator pedal (not shown)) and the current operating state of the motor 2. Control output. When the motor controller 4 detects a braking command from depression of a brake pedal (not shown) or the like, it switches the motor 2 to a generator and performs regenerative braking that applies braking force while generating electric power with rotational energy from the drive wheels 3A and 3B. It is like this.

A generator 6 is driven by an internal combustion engine (hereinafter referred to as engine) 7 for power generation.
It is connected to the battery 1 so that the battery 1 can be charged with the electric power generated by the generator 6. The motor controller 4 controls the generator 6 and the engine 7.
Is performed by the traveling management controller 9 together with the control of.

FIG. 9 is a schematic configuration diagram showing a parallel type hybrid electric vehicle, and the same reference numerals as those in FIG. 8 indicate the same members, so that the description thereof will be omitted. 9, reference numeral 8 denotes an internal combustion engine (engine) for traveling, and this engine 8 drives another pair of drive wheels 3C and 3D different from the drive wheels 3A and 3B in parallel with the motor 2. Is installed.

A running management controller 10 controls whether to operate either the motor 2 or the engine 8 or both of them with appropriate torque distribution based on the running state of the vehicle. In each of these hybrid electric vehicles, by auxiliary operation of the internal combustion engine, it is possible to extend the mileage of the vehicle while reducing exhaust gas and obtaining an effect of suppressing atmospheric pollution.

[0010]

By the way, in such a conventional hybrid electric vehicle, the internal combustion engine is operated only in an auxiliary manner. Normally, only the electric motor without exhaust gas is operated without operating the internal combustion engine. It should be operated and run. That is, for example, in a series hybrid electric vehicle, when the remaining capacity of the battery is reduced, the vehicle is not able to travel, and the battery is charged by external charging so as to generate electric power while operating the internal combustion engine for power generation ( It is desirable not to carry out power generation) except in an emergency.

Further, even in a parallel type hybrid electric vehicle, at the time of normal traveling, the vehicle is driven only by driving the electric motor, and it is necessary to operate the internal combustion engine for traveling without special traveling conditions or means for external charging. It is advisable to do this only under special circumstances, such as when you cannot drive. However, since these hybrid electric vehicles can be driven by an internal combustion engine,
There is a possibility that the driver will rely on the driving by this internal combustion engine, and it is possible that the hybrid electric vehicle, which extends the mileage of the vehicle while suppressing the pollution of the atmosphere, cannot achieve the original purpose.

Therefore, in the devising process of the present invention, there is provided a technique for guiding the driver not to rely on the internal combustion engine by limiting the output of the electric motor when the fuel is used for a predetermined amount or more while monitoring the use condition of the fuel. Although proposed, we would like to make it possible to promote driving that does not rely on the internal combustion engine by other means. Although not directly related to the field of the present invention, JP-A 1-2
In the electric vehicle hour meter disclosed in Japanese Patent No. 12626, there is proposed a technique of displaying the cumulative value of the ON time of the key switch of the electric vehicle or the cumulative value of the traveling time by a meter. It can be used to promote non-institutional driving.

The present invention has been made in view of the above problems, and an object thereof is to provide a fuel-use-restricted hybrid electric vehicle which allows a driver to guide the vehicle to travel without relying on the internal combustion engine. To do.

[0014]

Therefore, the fuel-use-restricted hybrid electric vehicle of the present invention according to claim 1 is
A battery that can be charged by an external charging unit, a driving electric motor that can drive wheels by electric power from the battery, a control unit that controls the operation of the electric motor, and a drive unit that directly or indirectly drives the wheels. In a hybrid electric vehicle having an internal combustion engine used, the vehicle is provided with a travel time relational amount calculation means for calculating an amount related to the travel time of the vehicle after the battery is charged by the external charging means, It is characterized in that the control means is configured to limit the output of the electric motor when the traveling time relation amount reaches a predetermined amount from the detection result of the traveling time relation amount calculation means.

According to a second aspect of the present invention, there is provided a fuel use-restricted hybrid electric vehicle according to the first aspect, wherein the running time of the vehicle after the battery has been charged by the external charging means. As the related quantity, the elapsed time after the battery is charged by the external charging means is used. Also,
According to a third aspect of the present invention, there is provided a fuel-use-restricted hybrid electric vehicle according to the first or second aspect, wherein the vehicle has a running time related amount after the battery is charged by the external charging means. The accumulated time during which the traveling switch is in the ON state after the battery is charged by the external charging means is used.

According to a fourth aspect of the present invention, there is provided the fuel use limiting hybrid electric vehicle according to the first aspect, wherein the battery is charged by the external charging means. The cumulative amount of the operating time of the internal combustion engine after the battery is charged by the external charging means is used as the running time related amount of the vehicle.

According to a fifth aspect of the present invention, there is provided a fuel use limited hybrid electric vehicle according to any one of the first to fourth aspects, wherein the control means causes the battery to become full when the external charging means charges the battery. When the battery is charged by the external charging means, the battery is judged to have been charged by the external charging means, and when the battery is charged by the external charging means, the output of the electric motor is limited. It is characterized by being.

According to a sixth aspect of the present invention, there is provided a fuel use limiting hybrid electric vehicle according to any one of the first to fifth aspects, wherein warning means for issuing a warning is provided when the output of the electric motor is limited. It is characterized by being provided. According to a seventh aspect of the present invention, there is provided a fuel use limited hybrid electric vehicle according to any one of the first to sixth aspects, wherein the internal combustion engine drives a generator for generating electric power to a drive motor. It is provided for this purpose.

According to an eighth aspect of the present invention, there is provided a fuel use limited hybrid electric vehicle according to any one of the first to seventh aspects, wherein the internal combustion engine is provided to directly drive the wheels. It is characterized by being.

[0020]

In the fuel use limited hybrid electric vehicle according to the first aspect of the present invention, the wheels are driven by operating the driving electric motor by the electric power from the battery through the control of the control means. This battery can be charged by the external charging means when the remaining capacity decreases, but when the remaining capacity of the battery decreases, the internal combustion engine is operated to use the internal combustion engine directly or indirectly. While driving, it is possible to drive the wheels.

However, the traveling time relation amount calculation means calculates the traveling time relation amount of the vehicle after the battery is charged by the external charging means, and the control means calculates the traveling time relation amount. The output of the electric motor is limited when the travel time related amount reaches a predetermined amount from the detection result of the means. That is, the output of the electric motor becomes limited when traveling for a long time without performing external charging, and the output of the electric motor is necessarily limited when traveling while using fuel by the internal combustion engine. This will prompt the driver to perform external charging.

In the fuel use restriction type hybrid electric vehicle of the present invention as set forth in claim 2 above, the elapsed time after the battery is charged by the external charging means is calculated by the travel time related amount calculation means. The control means limits the output of the electric motor when the elapsed time reaches a predetermined time from the detection result of the traveling time relation amount calculation means. That is, the output of the electric motor is limited after a long time without performing external charging, so that the driver is urged to perform external charging within a predetermined time. Will be suppressed while using.

In the fuel use limited hybrid electric vehicle of the present invention as set forth in claim 3, the traveling switch after the battery is charged by the external charging means by the traveling time related quantity calculating means is in the ON state. Is calculated, and the control means limits the output of the electric motor when the accumulated time reaches a predetermined time from the detection result of the traveling time related amount calculation means. That is, the output of the electric motor is limited when the vehicle is in a traveling state or a traveling standby state for a long time without performing external charging, so that traveling is inevitably suppressed while using fuel by the internal combustion engine. As a result, the driver is urged to perform external charging within a predetermined time.

According to the above-mentioned structure of claim 2,
With the configuration described above, the travel time relation amount calculation means calculates the elapsed time after the battery is charged by the external charging means and the travel switch after the battery is charged by the external charging means. Is calculated in the ON state, and the control means outputs the output of the electric motor when the elapsed time reaches a predetermined time or the integrated time reaches a predetermined time from the detection result of the traveling time relation amount calculation means. Restrict. That is, if a long time elapses without performing external charging, or if the vehicle is in a traveling state or a traveling standby state for a long time, the output of the electric motor will be limited, so fuel is inevitably used by the internal combustion engine. However, the driving is suppressed, and the driver is urged to perform external charging within a predetermined time.

In the fuel use limited hybrid electric vehicle according to the present invention as set forth in claim 4, the internal combustion engine is operated after the battery is charged by the external charging means by the travel time related amount calculating means. The integrated amount of time is calculated, and the control unit limits the output of the electric motor when the integrated amount of the operating time reaches a predetermined time from the detection result of the traveling time related amount calculation unit. That is, when the vehicle is run for a long time by using the battery for a long time, the output of the electric motor is limited, so that the running of the internal combustion engine while using the fuel is inevitably suppressed. , The driver is urged to perform external charging within a predetermined time.

According to the structure described in claim 2 above, this claim 4
When the configuration described above is provided, the elapsed time after the battery is charged by the external charging means and the internal combustion after the battery is charged by the external charging means in the travel time related amount calculating means. The integrated amount of the operating time of the engine is calculated, and the control means determines whether the elapsed time reaches a predetermined time from the detection result of the traveling time relation amount calculation means or the operation time from the detection result of the traveling time relation amount calculation means. When the accumulated amount of time reaches a predetermined time, the output of the electric motor is limited. That is, if a long time elapses without performing external charging, or if the battery is used for a long time to drive the vehicle for a long time, the output of the electric motor is limited, so that the internal combustion engine inevitably consumes fuel. The vehicle will be restrained from traveling while using, and the driver will be urged to perform external charging within a predetermined time.

According to the structure described in claim 3 above, this claim 4
With the configuration described above, the traveling time relation amount calculation means calculates the accumulated time during which the traveling switch is in the ON state after the battery is charged by the external charging means, and the battery is charged by the external charging means. The integrated amount of the operating time of the internal combustion engine after that is calculated, and in the control means, the integrated time reaches a predetermined time or the integrated amount of the operating time is detected from the detection result of the running time relation amount calculation means. When the predetermined time is reached, the output of the electric motor is limited. That is, when the vehicle is in a traveling state or a traveling standby state for a long time or the vehicle is traveling for a long time by using the battery for a long time, the output of the electric motor is limited, so that the internal combustion engine is inevitably inevitable. As a result, traveling while using fuel is suppressed, and the driver is urged to perform external charging within a predetermined time.

When the structure according to claim 4 is added to the structure according to claim 3 based on the structure according to claim 2 described above, the battery is charged by the external charging means by the travel time related amount calculating means. Elapsed time, the accumulated time of the traveling switch being in the ON state after the battery is charged by the external charging means, and the internal combustion engine of the internal combustion engine after the battery is charged by the external charging means. An integrated amount of operating time is calculated, and the control means determines whether the elapsed time reaches a predetermined time or the integrated time reaches a predetermined time from the detection result of the travel time related amount calculation means or the travel time related amount. When the integrated amount of the operating time reaches a predetermined time from the detection result of the calculating means, the output of the electric motor is limited. That is, if either a long time elapses without external charging, the vehicle is in a traveling state or a traveling standby state for a long time, or the vehicle is traveling for a long time by using the battery for a long time, Since the output of the electric motor is restricted, the internal combustion engine inevitably suppresses traveling while using fuel, and prompts the driver to perform external charging within a predetermined time. .

In the fuel use restricted hybrid electric vehicle of the present invention as set forth in claim 5, the control means performs charging by the external charging means when the battery is in a fully charged state during charging by the external charging means. When the battery is charged by the external charging means, the output of the electric motor is limited when the battery is charged, and this is released. Therefore, if the external charging is surely performed, the vehicle can travel freely. It will be possible to prompt the driver to external charging.

In the fuel use limited hybrid electric vehicle of the present invention as set forth in claim 6, when the output of the electric motor is limited, a warning is issued by the warning means, so that it is necessary to externally charge the driver. You can surely be prompted. In the fuel use restricted hybrid electric vehicle of the present invention as set forth in claim 7, the internal combustion engine drives the generator, and the electric power generated by the generator is directly supplied to the drive motor or the battery. Sent through.

In the fuel use limited hybrid electric vehicle of the present invention as set forth in claim 8, the internal combustion engine directly drives the wheels.

[0032]

Embodiments of the present invention will be described below with reference to the drawings. First, a fuel use restriction type hybrid electric vehicle as a first embodiment of the present invention will be described. FIG.
1 is a diagram schematically showing the configuration of the main part thereof. As shown in FIG. 1, in this embodiment, an example in which the present invention is applied to a series type hybrid electric vehicle will be described. It can also be applied to the parallel hybrid electric vehicle described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a battery. This battery 1 can be repeatedly charged by an external charger (not shown) not mounted on the vehicle, in addition to charging by a generator 6 mounted on the vehicle described later. it can. Reference numeral 2 denotes a motor (a traveling electric motor) supplied with electric power from the battery 1. The motor 2 drives the drive wheels 3A and 3B of the automobile. The output of the motor 2 is controlled by a motor controller (control means of the electric motor) 4. In the motor controller 4, the driver's output request operation (that is, the depressing state of an accelerator pedal (not shown)), the current operating state of the motor 2, etc. The output of the motor 2 is controlled based on

Further, in the motor controller 4, when a braking command is detected from depression of a brake pedal (not shown) or the like, the motor 2 is switched to a generator to drive wheels 3A and 3B.
It is possible to perform regenerative braking that gives a braking force while generating power with rotational energy from. Furthermore, 6 is a generator, and this generator 6 is an internal combustion engine for power generation (hereinafter,
It is designed to be driven by an engine 7). The battery 1 is connected so that the battery 1 can be charged with the electric power generated by the generator 6. The output of the engine 7 is controlled by adjusting the throttle opening degree or the like (not shown). The control of the generator 6 and the engine 7 is performed by the travel management controller 9 together with the control of the motor controller 4. There is.

Reference numeral 11 is a remaining capacity meter for detecting and displaying the remaining capacity of the battery, and the remaining capacity information 11A of the battery is sent from the remaining capacity meter 11 to the running management controller 9. Also, 14
Is a combination meter panel, 15 is a remaining time display meter provided in the combination meter panel 14, and displays the remaining time that can be normally traveled based on the signal 15A from the travel management controller 9. Reference numeral 17 denotes an alarm lamp, which also operates based on a signal 17A from the travel management controller 9.

Reference numeral 21 denotes an external charger as an external charging means. This electric vehicle is provided with a terminal (not shown) for connecting the external charger. During external charging, power is supplied from the external charger 21 through this terminal. The information 21A at the time of external charging at this time (information indicating that external charging is being performed, charging current information, etc.) 21A is sent to the travel management controller 9 and the remaining capacity meter 11.

The remaining capacity meter 11 determines whether or not the battery is fully charged during external charging, and obtains the remaining capacity based on the judgment. For example, whether or not the battery is fully charged is determined by charging current during external charging. And while monitoring the terminal voltage of the battery,
It is determined that the battery is fully charged when the battery is charged for a predetermined time after shifting to constant voltage charging and the charging current is reduced. In addition, the remaining capacity information 11A obtained by the remaining capacity meter 11 including the full charge information at the time of external charging is sent to the travel management controller 9.

The running management controller 9 includes
The battery 1 is provided with a function of calculating an amount related to the traveling time of the automobile after the charging by the external charger 21 [a traveling time related amount calculating means (not shown)]. As the quantity, the elapsed time T _{PA S} after the battery 1 is charged by the external charger 21
Is used.

That is, the running management controller
In the case of 9, normally, a dry pedal such as an accelerator pedal (not shown) is used.
Command information of the battery and the remaining capacity of the battery from the remaining capacity meter 11.
Based on the quantity information, the motor controller 4, generator 6 and
And engine 7 are controlled, but in addition to this, the remaining capacity
Externally charge the battery based on the detection information from the total 11
Calculate the elapsed time from the_PASIs
Setting value T set for _PAWhen it becomes 0 or more, the electric motor 2
Control to limit output.

In other words, the running management controller 9 determines, based on the detection information from the remaining capacity meter 11, that the external charging is completed when it is fully charged by the external charging, and the elapsed time T _PAS is determined from this point as a starting point. Counting is continued, and when the elapsed time T _PAS becomes equal to or greater than the set value T _PA 0, the output of the electric motor 2 is limited to prompt the driver to perform external charging. Since the count of the elapsed time T _PAS is reset to 0 when the battery is externally charged, the output of the electric motor 2 is no longer limited when the battery is externally charged, and the normal output of the electric motor 2 is obtained.

In external charging, charging is generally performed until the battery reaches full charge, but during internal charging (that is, charging during power generation running), generally, charging is not performed until charging reaches full charge. Regardless of whether the battery is fully charged or not, it can be determined that the battery has completed the external charging when the battery is fully charged. In this way, the running management controller 9 counts the elapsed time T _PAS in this way, and the number of remaining time T _REM (=
T _PA 0 −T _PAS ) is calculated and displayed on the remaining time display meter 15.

Further, the running management controller 9
Then, when the elapsed time T _PAS thus calculated becomes equal to or greater than the set value T _PA 0 (T _PAS ≧ T _PA 0), the electric motor 2
In addition to limiting the output of, the fact that the predetermined elapsed time has been reached,
That is, the alarm lamp 17 indicating that external charging should be performed is turned on. It should be noted that the travel management controller 9 does not exceed the elapsed time T as long as the battery 1 is mounted in the vehicle and is in the required connection state.
Continue counting the _PAS , and when the battery 1 is mounted on the vehicle and brought into a required connection state, the open terminal voltage of the battery 1 is measured to be a predetermined value (may be secured in the new battery. If the battery voltage is equal to or higher than a predetermined value, the elapsed time T _PAS starts counting from 0. On the other hand, if the battery voltage does not reach the predetermined value, the output of the electric motor 2 is limited in the same manner as when the elapsed time T _PAS exceeds the set value T _PA 0, and the alarm lamp 17 indicates that external charging should be performed. Is to be turned on. As a result, it is possible to avoid the problem that the elapsed time T _PAS is reset to 0 even though the battery is not charged externally by intentionally reconnecting the battery 1.

The output limit of the electric motor 2 is set so that the driver can sufficiently feel the output shortage of the vehicle, but can somehow move to the place where external charging is performed. Since the fuel use limiting hybrid electric vehicle of the first embodiment of the present invention is configured in this manner, the control for limiting the fuel use is performed as shown in FIG. 2, for example.

That is, the driving management controller 9 first determines whether or not the external charging is completed, that is, whether or not the external charging is fully charged based on the information 11A from the remaining capacity meter 11 ( Step S1
0). If the external charging is completed, the process proceeds to step S20 to reset the elapsed time T _PAS to 0, and then proceeds to step S30 to count the elapsed time T _PAS . on the other hand,
If the external charging is not completed, the counting of the elapsed time T _PAS is continued in step S30. The external charging does not end in this way when the external charging itself is not performed or when the external charging itself is not yet reached to the full charge. During external charging, the battery is normally charged to full charge, but if external charging is performed but full charge is not reached, the elapsed time T _PAS is not reset to 0 and increases.

When the fully charged battery 1 is newly installed in the vehicle, the counting is started from 0. Therefore, generally, the counting is performed similarly to the elapsed time after the battery 1 is fully charged by the external charging. And step S4
0 elapsed time T _PAS is set value T _PA 0 or more (T _PAS ≧ T _PA
It is judged whether or not it has become 0). If the elapsed time T _PAS is not equal to or greater than the set value T _PA 0 (that is, if T _PAS <T _PA 0), the electric motor 2 is normally operated without limiting the output of the electric motor 2 (step S50). On the other hand, when the elapsed time T _PAS becomes equal to or greater than the set value T _PA 0, the output of the electric motor 2 is limited, and the alarm lamp 17 indicates that a predetermined elapsed time has been reached, that is, external charging should be performed. Is turned on (step S60).

In this way, without external charging,
As the time elapses, the output of the electric motor 2 is limited, and the driver feels that the output of the vehicle is insufficient and inevitably performs external charging. Further, by lighting the alarm lamp 17 indicating that the refueling amount has been exceeded, the driver can recognize that the decrease in output is not a malfunction but a warning caused by the refueling amount being exceeded.

Further, in this embodiment, since the mere elapsed time T _PAS after the completion of the external charging is used, the time counting is simple and the control itself can be simple and reliable.

Since the driver cannot freely drive when the output is reduced in this way, he / she routinely keeps sufficient capacity of the battery by external charging. Even in a hybrid electric vehicle, the internal combustion engine is operated. It will run without relying on the engine. As a result, it becomes possible to sufficiently obtain the intended effect of suppressing the atmospheric pollution of the electric vehicle while allowing the vehicle to travel by the internal combustion engine in an emergency.

Next, a fuel use restriction type hybrid electric vehicle as a second embodiment of the present invention will be described.
FIG. 3 is a diagram schematically showing the configuration of the main part thereof, and this embodiment also employs the series hybrid electric vehicle. Note that, in FIG. 3, the same reference numerals as those in FIG. 1 denote the same components. As shown in FIG. 3, in the present embodiment, after the battery 1 is charged by the external charger 21 as the travel time related amount in the travel time related amount calculating means (not shown) in the travel management controller 9. The cumulative time T _ADD of the ON state of the traveling switch (key switch or ignition switch = IG switch) 22 is used.

That is, the running management controller 9 integrates the time during which the IG switch 22 is in the ON state after the battery is externally charged, based on the detection information from the remaining capacity meter 11, and the integrated time T _{When ADD} becomes equal to or _larger than the preset value T _AD 0, the motor 2
The output of the alarm lamp 17 is limited and the alarm lamp 17 is turned on.

That is, the running management controller 9 determines that the external charging is completed when the external charging reaches the full charge based on the detection information from the remaining capacity meter 11, and the IG switch 22 is turned on from this point onward. The accumulated time T _ADD is obtained by accumulating the time in the state. Then, when the integrated time T _ADD becomes equal to or more than the set value T _AD 0, the output of the electric motor 2 is limited to prompt the driver to perform external charging. The count of this integrated time T _ADD
When the battery is externally charged, it is reset to 0. Therefore, when the battery is externally charged, the output of the electric motor 2 is no longer limited, and the normal output of the electric motor 2 is obtained.

The description is omitted because it is the same as the first embodiment _except that the integrated time T _{ADD in} which the IG switch 22 is in the on state is used as the travel time related amount for limiting the output of the electric motor 2. Since the fuel use limiting hybrid electric vehicle of the second embodiment of the present invention is constructed in this way, control for fuel use limitation is performed as shown in FIG. 4, for example.

That is, the driving management controller 9 first determines whether or not the external charging is completed, that is, whether or not the external charging is fully charged based on the information 11A from the remaining capacity meter 11 ( Step S10).
If the external charging is completed, the process proceeds to step S22, the integrated time T _ADD is reset to 0, and then step S32 is performed.
Proceed to and count the integrated time T _ADD . On the other hand, if the external charging is not completed, the integrated time T _{ADD is} calculated in step S32.
To continue counting.

Then, in step S42, the integrated time T _ADD
Is greater than or equal to the set value T _AD 0 (T _ADD ≧ T _AD 0). If the integrated time T _ADD is not equal to or greater than the set value T _AD 0 (that is, if T _ADD <T _AD 0), the electric motor 2 is normally operated without limiting the output of the electric motor 2 (step S5).
0), when the integrated time T _ADD becomes the set value T _AD 0 or more,
In addition to limiting the output of the electric motor 2, the alarm lamp 17 indicating that the predetermined integration time has been reached, that is, external charging should be performed is turned on (step S60).

In this way, without external charging,
Since the output of the electric motor 2 is limited as the use time of the vehicle elapses, the driver feels that the output of the vehicle is insufficient and inevitably performs external charging, as in the first embodiment. The driver can recognize that the decrease in the output is not a malfunction but a warning due to the oil supply amount being over, by lighting the alarm lamp 17 for the oil supply amount being over.

As a result, the driver can keep a sufficient capacity of the battery on a daily basis by external charging, and even a hybrid electric vehicle can run without relying on the internal combustion engine, which is an emergency. In some cases, the internal combustion engine can be used to drive the vehicle, while the electric vehicle can sufficiently obtain the intended effect of suppressing air pollution.

Further, in this embodiment, since the integrated time T _ADD corresponding to the actual usage time of the vehicle after completion of the external charging is used, the actual usage state of the vehicle, that is, the degree of decrease in the capacity of the battery 1 is used. Can be controlled according to
Even if the capacity of the battery 1 decreases, if it is attempted to rely on the internal combustion engine without performing external charging, this can be reliably suppressed.

Next, a fuel use restriction type hybrid electric vehicle as a third embodiment of the present invention will be described.
FIG. 5 is a diagram schematically showing the configuration of the main part thereof, which is also used in the series hybrid electric vehicle in this embodiment. Note that, in FIG. 5, the same reference numerals as those in FIGS. 1 and 3 denote the same items. As shown in FIG. 5, in the present embodiment, after the battery 1 is charged by the external charger 21 as the travel time related amount in the travel time related amount calculating means (not shown) in the travel management controller 9. The accumulated time (operating accumulated time) T _WAD of the operating state of the engine 7 is used.

In other words, the running management controller 9 integrates the time during which the engine 7 is in the operating state after the battery is externally charged, based on the detection information from the remaining capacity meter 11, and accumulates the operating time T. _{When WAD} becomes equal to or greater than the preset value T _WA 0, the output of the electric motor 2 is limited and the alarm lamp 17 is turned on.

That is, the running management controller 9 determines that the external charging is completed when the external charging is fully charged, based on the detection information from the remaining capacity meter 11, and from this point onward, the engine 7 is in the operating state. The accumulated operating time T _WAD is _calculated by accumulating the time. Then, when the accumulated operation time T _WAD becomes equal to or greater than the set value T _WA 0, the output of the electric motor 2 is limited to prompt the driver to perform external charging. The count of the cumulative operation time T _WAD is also reset to 0 when the battery is externally charged, so that when the battery is externally charged, the output of the electric motor 2 is not limited and the normal output of the electric motor 2 is obtained.

Except that the cumulative time T _WAD of the operating state of the engine 7 is used as the travel time related amount for limiting the output of the electric motor 2 as described above, the description thereof will be omitted. Since the fuel use restriction type hybrid electric vehicle of the third embodiment of the present invention is configured as described above, the control for fuel use restriction is performed as shown in FIG. 6, for example.

That is, the driving management controller 9 first determines, based on the information 11A from the remaining capacity meter 11, whether or not the external charging is completed, that is, whether or not the external charging is fully charged ( Step S10).
If the external charging is completed, the process proceeds to step S24 to reset the accumulated operation time T _WAD to 0, and then to step S24.
Proceeding to step 34, the cumulative operation time T _WAD is counted. On the other hand, if the external charging is not completed, the counting of the accumulated operation time T _WAD is continued in step S34.

Then, in step S44, the cumulative operating time T
_It is determined whether _WAD is equal to or greater than the set value T _WA 0 (T _WAD ≧ T _WA 0). If the cumulative operation time T _WAD is not equal to or greater than the set value T _WA 0 (that is, if T _WAD <T _WA 0), the electric motor 2
The electric motor 2 is normally operated without limiting the output of the electric motor 2 (step S50), and when the operation integrated time T _WAD becomes equal to or more than the set value T _WA 0, the output of the electric motor 2 is restricted and a predetermined integrated time is reached. That is, the alarm lamp 17 indicating that external charging should be performed is turned on (step S6).
0). In this way, the output of the electric motor 2 is limited when the usage time of the vehicle elapses without performing external charging, so that the driver does not output insufficient vehicle, as in the first and second embodiments. The driver feels that he / she will inevitably perform external charging, and the driver can recognize that the decrease in the output is not a malfunction but a warning due to the oil supply amount being over because the alarm lamp 17 for the oil supply amount being over is turned on. .

As a result, the driver will be able to secure a sufficient capacity of the battery on a daily basis by external charging, and even a hybrid electric vehicle will be able to run without relying on the internal combustion engine, which is an emergency. In some cases, the internal combustion engine can be used to drive the vehicle, while the electric vehicle can sufficiently obtain the intended effect of suppressing air pollution.

Further, in this embodiment, since the integrated time T _WAD corresponding to the usage time of the internal combustion engine after completion of the external charging is used, the dependence on the internal combustion engine is suppressed while reliably monitoring the usage of the internal combustion engine. be able to. By the way, the above-mentioned first
~ Combinations of the third embodiments are also possible. A fuel use restriction type hybrid electric vehicle as a fourth embodiment of the present invention is a combination of the first to third embodiments,
Although the configuration diagram is not shown, the battery 1 is the external charger 21 as a travel time related amount for limiting the output of the electric motor 2.
By the elapsed time T _PAS from being conducted charging, the integration time T _ADD ON state of the travel switch (IG switch) 22 from the battery 1 is carried out is charged by an external charger 21, the battery 1 is externally Accumulated time T of the operating state of the engine 7 since charging by the charger 21
_WAD is used. These running time related quantities T
_{When any of PAS} , T _ADD and T _WAD becomes equal to or more than the respective set values T _PA 0, T _AD 0 and T _WA 0, the output of the electric motor 2 is limited and the alarm lamp 17 is turned on.

Fuel consumption limiting type high of the fourth embodiment of the present invention
The Brid electric vehicle is configured this way, so an example
For example, as shown in FIG.
Done. In other words, driving management controller
9. First, based on the information 11A from the remaining capacity meter 11,
Whether external charging is completed, that is, whether external charging is
It is determined whether the battery is fully charged (step S10).
If the external charging is completed, the elapsed time in step S20
T_PASIs reset to 0, and the accumulated time T is reset in step S22.
_ADDIs reset to 0, and the accumulated operating time T
_WADIs reset to 0 and the process proceeds to step S30. Also,
If external charging is not completed, go directly to step S30.
move on.

In step S30, the elapsed time T _PAS is counted, and in step S40 the elapsed time T _PAS is set to the set value T _PAS.
It is determined whether _PA 0 or more (T _PAS ≧ T _PA 0) is satisfied. When the elapsed time T _PAS exceeds the set value T _PA 0, the output of the electric motor 2 is limited, and the alarm lamp 17 indicating that a predetermined elapsed time has been reached, that is, external charging should be performed is turned on. Yes (step S60).

If the elapsed time T _PAS is not equal to or greater than the set value T _PA 0 (that is, if T _PAS <T _PA 0), the process proceeds to step S32 to count the integrated time T _ADD . Then, in step S42, the integration time T _ADD is set value T _AD 0 or more (T
_It is determined whether or not _ADD ≧ T _AD 0). Accumulated time T
_{When ADD} becomes equal to or greater than the set value T _AD 0, the output of the electric motor 2 is limited, and the alarm lamp 17 indicating that the predetermined integration time has been reached, that is, external charging should be performed is turned on (step S60).

If the integrated time T _ADD is not equal to or greater than the set value T _AD 0 (that is, if T _ADD <T _AD 0), the process proceeds to step S34 to count the operating integrated time T _WAD . Then, in step S44, it is determined whether or not the cumulative operation time T _WAD is equal to or greater than the set value T _WA 0 (T _WAD ≧ T _WA 0). The cumulative operating time T _WAD is not greater than or equal to the set value T _WA 0 (that is, T _{WAD
If WAD} <T _WA 0), the electric motor 2 is normally operated without limiting the output of the electric motor 2 (step S50), and the output of the electric motor 2 is limited when the accumulated operation time T _WAD becomes equal to or more than the set value T _WA 0. Besides, an alarm lamp 1 indicating that a predetermined integration time has passed, that is, external charging should be performed
7 is turned on (step S60).

When such a combination is performed, the output of the electric motor 2 can be restricted in a complex manner under various conditions. This is the same as in the first to third embodiments or is more reliable than these embodiments. The driver can be prompted for external charging. Further, by lighting the alarm lamp 17 indicating that the refueling amount has been exceeded, the driver can recognize that the decrease in output is not a malfunction but a warning caused by the refueling amount being exceeded.

As a result, even a hybrid electric vehicle can be driven without relying on the internal combustion engine, and can be driven by the internal combustion engine in an emergency, etc. It becomes possible to obtain a sufficient suppression effect. Also, the first
Any two of the second and third embodiments may be combined to perform the same control as in the fourth embodiment.

The structure for limiting the fuel use of each embodiment is applicable not only to the series hybrid electric vehicle but also to the parallel hybrid electric vehicle.

[0073]

As described above in detail, according to the fuel use limiting hybrid electric vehicle of the present invention as set forth in claim 1, the battery which can be charged by the external charging means and the wheel driven by the electric power from the battery. A drive electric motor, a control means for controlling the operation of the electric motor, and a hybrid electric vehicle having an internal combustion engine used directly or indirectly to drive the wheels, wherein the battery is the external The running time-related amount calculating means for calculating an amount related to the running time of the automobile after charging by the charging means is provided, and the control means uses the running time based on the detection result of the running time-related amount calculating means. By configuring so that the output of the electric motor is limited when the related amount reaches a predetermined amount, it is possible to promote traveling that does not rely on the internal combustion engine even in a hybrid electric vehicle, While leaving a margin that is suddenly such as when the vehicle can travel by the internal combustion engine, it is possible to obtain a sufficient effect of suppressing the atmosphere electric vehicle to the original object contamination.

According to the fuel use restriction type hybrid electric vehicle of the present invention described in claim 2, in the structure of claim 1, the battery of the vehicle is charged after the battery is charged by the external charging means. As a running time related quantity,
With the configuration in which the elapsed time from when the battery is charged by the external charging means is used, simple control can reliably promote running without relying on the internal combustion engine even in a hybrid electric vehicle, and in an emergency. In this case, the electric vehicle can sufficiently obtain the intended effect of suppressing air pollution while leaving a room for traveling by the internal combustion engine.

According to the fuel use restriction type hybrid electric vehicle of the present invention as set forth in claim 3, claim 1 or 2 is provided.
In the configuration described above, the running switch after the battery is charged by the external charging means is the ON state as the running time related amount of the vehicle after the battery is charged by the external charging means. Due to the configuration that the integrated time is used, even if it is a hybrid electric vehicle, driving that does not rely on the internal combustion engine can be surely promoted by reliable control according to the actual usage time of the vehicle. Thus, the electric vehicle can sufficiently obtain the intended effect of suppressing air pollution while leaving a room for traveling.

According to the fuel use restriction type hybrid electric vehicle of the present invention as defined in claim 4, in the structure according to any one of claims 1 to 3, the battery is charged by the external charging means. Since the integrated amount of the operating time of the internal combustion engine after the battery is charged by the external charging means is used as the running time related amount of the automobile after that, the use of the internal combustion engine is ensured. While monitoring, even if it is a hybrid electric vehicle, it is possible to reliably promote running without relying on the internal combustion engine. It becomes possible to obtain a sufficient suppression effect.

According to the fuel use limited hybrid electric vehicle of the present invention as defined in claim 5, in the structure as defined in any one of claims 1 through 4, the control means controls the battery when the external charging means charges the battery. When the battery is fully charged, it is determined that the external charging means has charged the battery, and when the battery is charged by the external charging means, the output of the electric motor is limited. With this configuration, it is possible to drive freely as long as external charging is reliably performed, it is possible to clearly promote external charging to the driver, and it is possible to drive by the internal combustion engine in an emergency. While leaving the above, it becomes possible to surely obtain the effect of suppressing the pollution of the atmosphere due to the traveling of the electric vehicle which does not rely on the internal combustion engine which is the original purpose.

According to the fuel use restriction type hybrid electric vehicle of the present invention as defined in claim 6, in the configuration according to any one of claims 1 to 5, a warning is issued when the output of the electric motor is restricted. With the configuration that the means is provided, it is possible to more reliably promote traveling that does not rely on the internal combustion engine. The hybrid electric vehicle according to claim 7, wherein the internal combustion engine is provided for driving a generator that generates electric power to a driving electric motor, as in the fuel use limited hybrid electric vehicle according to claim 8. Even in a hybrid electric vehicle in which the internal combustion engine is provided to directly drive the wheels, such as the fuel use limited hybrid electric vehicle in FIG. While leaving the above, it is possible to obtain the effect that the electric vehicle can surely obtain the effect of suppressing the pollution of the air due to the traveling that does not rely on the internal combustion engine, which is the original purpose.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a main part of a fuel use restriction type hybrid electric vehicle according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the fuel use restriction type hybrid electric vehicle of the first embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of main parts of a fuel use limiting hybrid electric vehicle according to a second embodiment of the present invention.

FIG. 4 is a flow chart showing the operation of the fuel use limited hybrid electric vehicle of the second embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a main part of a fuel use restriction type hybrid electric vehicle according to a third embodiment of the present invention.

FIG. 6 is a flow chart showing an operation of a fuel use restriction type hybrid electric vehicle according to a third embodiment of the present invention.

FIG. 7 is a flow chart showing an operation of a fuel use limiting hybrid electric vehicle according to a fourth embodiment of the present invention.

FIG. 8 is a configuration diagram schematically showing a series hybrid electric vehicle.

FIG. 9 is a configuration diagram schematically showing a parallel hybrid electric vehicle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Battery 2 Motor (driving electric motor) 3A, 3B Drive wheels 4 Motor controller (motor control means) 6 Generator 7 Internal combustion engine (engine) 9 Driving management controller 11 Remaining capacity meter 14 Combination meter panel 15 Remaining time display Meter 17 Alarm lamp 21 External charger as external charging means 22 Travel switch (key switch or ignition switch)

Front Page Continuation (72) Inventor Shinya Furukawa 5-3-8 Shiba, Minato-ku, Tokyo Within Mitsubishi Motors Corporation (72) Inventor Masaaki Kato 5-3-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation Stock In-house (72) Inventor Nobuyuki Kawamura 5-3-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation

Claims (8)

[Claims] 1. A battery which can be charged by an external charging means, a driving electric motor which can drive wheels by electric power from the battery, a control means which controls the operation of the electric motor, and a direct driving means for driving the wheels. In a hybrid electric vehicle equipped with an internal combustion engine that is used indirectly or indirectly, a travel time related quantity for calculating a quantity related to a travel time of the vehicle after the battery is charged by the external charging means. The control means is provided with a calculating means, and the control means is configured to limit the output of the electric motor when the running time related quantity reaches a predetermined amount from the detection result of the running time related quantity calculating means. , Fuel-limited hybrid electric vehicles. 2. The running time related quantity of the vehicle after the battery is charged by the external charging means,
2. The fuel use limited hybrid electric vehicle according to claim 1, wherein the elapsed time after the battery is charged by the external charging means is used. 3. The running time related quantity of the vehicle after the battery is charged by the external charging means,
The fuel use limited hybrid electric vehicle according to claim 1 or 2, characterized in that an integrated time during which the traveling switch is in an ON state after the battery is charged by the external charging means is used. 4. The running time-related quantity of the vehicle after the battery is charged by the external charging means,
4. The fuel use restriction formula according to claim 1, wherein an integrated amount of the operating time of the internal combustion engine after the battery is charged by the external charging means is used. Hybrid electric vehicle. 5. The control means determines that the external charging means has charged the battery when the battery is in a fully charged state during charging by the external charging means, and the battery is charged by the external charging means. The fuel use limited hybrid electric vehicle according to any one of claims 1 to 4, which is configured to release the output of the electric motor when the output is limited. 6. A warning means for issuing a warning when limiting the output of the electric motor is provided.
A fuel-use limited hybrid electric vehicle according to any one of claims 1 to 5. 7. The fuel use limit according to claim 1, wherein the internal combustion engine is provided for driving a generator that generates electric power to a driving electric motor. Hybrid electric vehicle. 8. The internal combustion engine is provided for directly driving the wheels.
5. A fuel-use limited hybrid electric vehicle according to any one of 1. [0001]