JP2000032609A - Control equipment of hybrid electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide control equipment of a hybrid electric vehicle which can restrain undesirable changes in a battery voltage caused by change of a working state. SOLUTION: Changes in an operating state which generates excessive voltage change of a power storing means is detected (S110). At this time, a charging and discharging control amount is changed to the direction regulating the voltage change (S114). Thereby excessive change of a battery voltage generated at the time of rapid change of an operating state, an alarm being generated, and a charging or discharging current being cut off for protection of a battery are prevented. Further, excessive increase or shortage of a battery can be prevented, and its function deterioration can be restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a control device for a hybrid electric vehicle.

[0002]

2. Description of the Related Art Power transmission means including a rotating electric machine for converting a part or all of engine power into electric power and generating at least a part of vehicle driving power, and a hybrid engine including a power storage means for exchanging electric power with the rotating electric machine. Hybrid electric vehicles having the following have been put to practical use.

[0003]

In the control device for a hybrid electric vehicle, a vehicle drive power demand value Pd 'and a vehicle drive power demand value Pd' are determined as power amounts to be generated by the power transmission means determined based on the operation state of the vehicle including vehicle operation information. The engine power demand value Pe ′ is determined so as to satisfy a charge / discharge power demand value Pb ′ which is a charge / discharge control amount determined to maintain the remaining capacity of the power storage means in an appropriate range. The engine is controlled so as to generate the engine power corresponding to the required value Pe ', and the generated engine power is distributed by the power transmission means.

[0004] However, if a sudden change in the vehicle driving power demand value Pd 'due to a sudden change in the driving state of the vehicle causes a sudden change in the engine power demand value Pe', a delay in following the engine power in response to the sudden change occurs, and the power transmission is transiently caused. The rotating electric machine of the means absorbs insufficient energy from the battery or discharges surplus energy to the battery. Power transfer between the rotating electric machine and the battery is performed by a change in the terminal voltage on the battery side, but a sudden change in the battery voltage occurs transiently due to a sudden change in operating conditions such as sudden acceleration and sudden deceleration. There is a possibility that the battery controller monitoring the battery state determines that the battery is abnormal and issues an alarm, or prohibits battery charging / discharging. Further, it is conceivable that a sudden change in the battery voltage due to the sudden change in the operating conditions may affect battery performance such as cycle life. The above-mentioned problem is particularly remarkable at a low temperature where the capacity of the battery is apparently reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a control device for a hybrid electric vehicle that can suppress an undesired change in battery voltage due to a change in operation state.

[0006]

In the control apparatus for a hybrid electric vehicle according to the first aspect of the present invention, in the control of the hybrid electric vehicle, particularly when the operating state changes to cause an excessive voltage change of the power storage means, the voltage of the power storage means is changed. The charge / discharge control amount is changed so as to regulate the change. With this configuration, even when the operating state is suddenly changed, the battery voltage does not change excessively, so that an alarm is not generated, and the charging / discharging current is not interrupted to protect the battery. Can be prevented from being excessively increased or shortage, and the performance degradation can be suppressed.

According to a second aspect of the present invention, in the control apparatus for a hybrid electric vehicle according to the first aspect, the charge / discharge control amount is changed by a change in an accelerator opening which causes an excessive voltage change in the power storage means. Therefore, it is possible to quickly (precedingly) detect a change in the driving state of the vehicle without newly providing a sensor or the like. According to the third aspect of the present invention, in the control apparatus for a hybrid electric vehicle according to the first aspect, the charge / discharge control amount is further determined by a change in the vehicle drive power request value Pd ′ that causes an excessive voltage change in the power storage unit. Since the control process is changed, the control process used for determining the engine power required value Pe ′ can be shared, and control can be performed without newly providing a sensor or the like.

According to the fourth aspect of the present invention, the first aspect is provided.
In the control device for a hybrid electric vehicle according to any one of the above-described items 3, further, when the change in the operation state is an acceleration state, and the control of the charge / discharge control amount is on the discharge side,
Alternatively, when the change in the operation state is a deceleration state and the control of the charge / discharge control amount is on the charge side, the absolute value of the charge / discharge control amount is reduced.

This will be described in more detail. If the change in the operating state is an acceleration state, the required vehicle drive power value Pd 'increases, so the battery is transiently discharged from the battery to the rotating electric machine due to a delay in following the increase in the engine power with respect to the increase in the engine power required value Pe'. Is expected to occur and the battery voltage tends to drop transiently.

However, at this time, the control of the charge / discharge control amount for optimizing the remaining capacity of the battery is the discharge control, which means that the battery voltage is transiently further reduced, and the battery voltage becomes too small. Raises the possibility of inducing a condition. Therefore, in this case, the absolute value of the charge / discharge control amount is reduced in advance based on a change in the operating condition, thereby preventing the occurrence of an undervoltage state of the battery voltage due to the discharge control of the charge / discharge control amount.

When the change in the driving state is a deceleration state, the required vehicle drive power value Pd 'decreases. Therefore, the delay in following the decrease in the engine power in response to the decrease in the required engine power value Pe' and the kinetic energy of the wheels are reduced. It is predicted that the battery will transiently charge the battery from the rotating electrical machine, such as by regenerating the rotating electrical machine as a generator, and the battery voltage will transiently increase.

However, at this time, the control of the charge / discharge control amount for optimizing the remaining capacity of the battery is the charge control, which means that the battery voltage is transiently further increased and the battery voltage is excessively increased. This raises the possibility of causing an ascending state. Therefore, in this case, the absolute value of the charge / discharge control amount is reduced in advance based on the change in the operating condition, thereby preventing the occurrence of the undervoltage state of the battery voltage due to the charge control of the charge / discharge control amount.

According to this configuration, necessary control can be easily performed by changing the charge / discharge control amount (charge / discharge power required value Pb ′) used for engine power control without employing complicated control. . According to a fifth aspect of the present invention, in the control apparatus for a hybrid electric vehicle according to any one of the first to fourth aspects, the change in the operating state is an acceleration state, and the control of the charge / discharge control amount is performed on the charging side. Or when the change in the operating state is a deceleration state and the control of the charge / discharge control amount is on the discharge side, the absolute value of the charge / discharge control amount is increased.

This will be described in more detail. If the change in the operating state is an acceleration state, the required vehicle drive power value Pd 'increases, so the battery is transiently discharged from the battery to the rotating electric machine due to a delay in following the increase in the engine power with respect to the increase in the engine power required value Pe'. Is expected to occur and the battery voltage tends to drop transiently.

However, at this time, increasing the charge / discharge control amount for optimizing the remaining capacity of the battery to the charging side works in a direction to suppress the above-mentioned transient decrease in the battery voltage. This is advantageous in terms of improvement of Further, when the change in the driving state is a deceleration state, the required vehicle drive power value Pd ′ decreases. It is predicted that the battery will transiently charge the battery from the rotating electrical machine by regenerating the battery as a generator and the battery voltage will transiently increase.

However, at this time, the enhancement of the charge / discharge control amount for optimizing the remaining capacity of the battery to the discharge side works in the direction of suppressing the above-mentioned transient rise of the battery voltage. This is advantageous in terms of improvement of Claim 6
According to the configuration described above, in the control device for a hybrid electric vehicle according to any one of claims 1 to 5, the change in the charge / discharge control amount may include an operation state in which an excessive voltage change of the power storage unit occurs. It lasts for a predetermined time after the change occurs.

In this way, even if the sudden change in the operating state is short and the influence on the battery voltage is maintained even after the end of the sudden change, the effect of suppressing the battery voltage change can be maintained. According to the configuration of claim 7, the control device for a hybrid electric vehicle according to claim 6 further includes:
The change in the charge / discharge control amount is maintained for a predetermined time after the change in the operation state that causes an excessive voltage change in the power storage means.

With this configuration, for example, when the vehicle operating state changes for a short period of time, for example, when the accelerator is suddenly depressed, the excessive voltage change of the power storage means is caused by the influence after the accelerator is depressed (vehicle operating state). In the case where the change is continued after the end of the change, the excessive change in the voltage of the power storage means can be satisfactorily suppressed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the control apparatus for a hybrid electric vehicle according to the present invention will be described with reference to the accompanying drawings.

[0020]

Embodiment 1 A control device for a hybrid electric vehicle according to Embodiment 1 will be described below. (Configuration) The system configuration of the control device for a hybrid electric vehicle will be described with reference to the block diagram shown in FIG.

1 is an internal combustion engine (engine), 2 is an output shaft of the internal combustion engine 1, 3 is an intake pipe, 4 is a fuel injection valve, 5 is a throttle valve, 6 is intake air amount adjusting means, 7 is an accelerator sensor, 8 Is a brake sensor, 9 is a shift switch, 10 is power transmission means, and the power transmission means 10 has a first rotating electric machine 1010 and a second rotating electric machine 1020.

11 is a differential device, 12 is an IG switch, 1
3 is an internal combustion engine control device, 14 is a first rotating electric machine 1010
And a driving device for the second rotating electric machine 1020, 15 is a power storage device including a battery, 16 is a hybrid control device,
Reference numeral 17 denotes a battery controller for controlling the power storage device. The engine (internal combustion engine) 1, the power transmission means 10, and the power storage device (power storage means) 15 constitute a hybrid engine,
The internal combustion engine control device 13, the drive device 14, the hybrid control device 16, and the battery controller 17 constitute a control device of a hybrid electric vehicle, and the internal combustion engine control device 13 and the hybrid control device 16 include a microcomputer.

The power transmission means 10 includes two rotating electric machines 10
10, 1020. First rotating electric machine 1010
Has an inner rotor connected to the output shaft 2 of the internal combustion engine 1 and an outer rotor provided on the outer peripheral side of the inner rotor. One of the two rotors has a permanent magnet, and the other has a three-phase coil. And a brushless DC motor. The second rotating electric machine 1020 is composed of a brushless DC motor having a rotor having a permanent magnet (not shown) and a stator having a three-phase coil.
It rotates integrally and mechanically with the outer rotor 10 and is connected to the output shaft of the vehicle through a differential. For example, the first rotating electrical machine 1010 and the second rotating electrical machine 1020 are provided with the stator of the second rotating electrical machine 1020 on the outer peripheral side of the outer rotor of the first rotating electrical machine 1010 also serving as the rotor of the second rotating electrical machine 1020. Thus, it is also possible to adopt a coaxial arrangement in which the second rotating electric machine 1020 is arranged on the outer peripheral side of the first rotating electric machine 1010.
Since the structure and operation of the power transmission means 10 composed of these two-rotor electric rotating machines are well known, further description is omitted.

(Basic Operation) Hybrid Controller 16
Knows the user's intention from the amount of vehicle operation information input from the accelerator sensor 7, brake sensor 8, shift switch 9, IG switch 12, and the like. In addition to the information, a vehicle drive torque request value Td 'is created based on the current vehicle speed, engine speed, and the like, and a vehicle drive power request value Pd' is calculated based on the vehicle speed from a vehicle speed sensor (not shown). .

The battery controller 17 has a microcomputer configuration, and checks the state of charge of the battery to determine the state of charge (SOC) of the battery.
That is, the remaining capacity of power storage device 15 is output to hybrid control device 16. The hybrid control device 16 calculates the required charging / discharging power value Pb ′ according to the received SOC, and calculates the required vehicle driving power value Pd ′ obtained earlier.
Is added to obtain the required engine power value Pe ′, which is transmitted to the internal combustion engine control device 13.

The internal combustion engine control device 13 stores a fuel efficiency map of the internal combustion engine 1 and determines an engine operating point at which the internal combustion engine 1 has the highest efficiency based on the received engine power demand value and the fuel efficiency map. Then, an intake air amount (engine torque required value) and an engine speed required value corresponding to the engine operating point are determined. Further, the throttle opening is controlled based on the intake air amount and the engine speed required value is determined. Is transmitted to the hybrid control device 16. Further, the internal combustion engine control device 13 drives the electronically controlled fuel injection device mounted on the internal combustion engine 1 to execute known fuel injection control, and executes known ignition control.

The hybrid control device 16 controls the first rotating electric machine 1 so as to satisfy the received engine speed request value.
In order to control the rotation speed of the first rotating electric machine 1010, the torque request value of the first rotating electric machine 1010 is calculated based on the rotational angular velocity difference between the two rotors of the first rotating electric machine 1010 transmitted from the driving device 14. Command. Further, the hybrid control device 16 calculates a required torque value of the second rotating electric machine 1020 from a difference between the required driving torque value of the vehicle and the required torque value of the first rotating electric machine 1010, and outputs it to the driving device 14. I do.

The drive device 14 is a hybrid control device 1
6 to control the field direction of the first rotating electric machine 1010 and the second rotating electric machine 1020 and the current control in the direction orthogonal thereto based on the torque request values of the first and second rotating electric machines received from the first and second rotating electric machines. Generate torque according to both torque requirements. Normally, drive device 14 detects the rotation speeds of first rotating electric machine 1010 and second rotating electric machine 1020, respectively, and transmits the detected rotation speed to hybrid control device 16.
At this time, one of the first rotating electrical machine 1010 and the second rotating electrical machine 1020 performs a power generation operation, and supplies the generated power to the other that is electrically operated.

(Calculation control of required engine power value Pe ') The calculation control operation of the required engine power value Pe' will be described with reference to the flowchart of FIG. First, a vehicle drive torque request value Td 'is calculated based on the accelerator opening input from the accelerator sensor 7 (S100), and the vehicle speed (or the output shaft speed of the hybrid engine) V from a vehicle speed sensor (not shown) is read ( S102), and calculates the required vehicle drive power value Pd 'based on the calculated values (S102).
104). Note that the vehicle drive power request value Pd ′ is T
It is calculated by multiplying d '· V by a proportional constant.

Next, the remaining capacity of the battery is read from the SOC meter 17 (S106), and based on the remaining capacity, the charge / discharge control amount Pchg (the charge / discharge power required value Pb 'in this specification) is determined.
Is calculated (S108). In this embodiment, the charge / discharge control amount Pchg is calculated when the remaining capacity is excessively large so that the remaining capacity is in an appropriate range so that the power storage device 15 can always perform a predetermined amount of charge / discharge. The charge / discharge control amount Pchg is set on the discharge side, and the charge / discharge control amount Pchg is set on the charge side when the remaining capacity is excessively small. When the capacity is relatively large, the battery is slightly discharged, and when the remaining capacity is relatively small, the battery is slightly charged. The charge / discharge control amount Pchg can be obtained, for example, from a map of the remaining capacity and the charge / discharge control amount Pchg stored in advance (see FIG. 5).

Next, an accelerator opening change amount ΔACC for a predetermined time, that is, an accelerator opening change rate a is calculated,
It is determined whether the absolute value IaI of the accelerator opening change rate a is equal to or greater than a predetermined threshold value IaIth (S110). In addition,
This predetermined time may be a routine interval of FIG. 2 that is executed periodically, or may be a longer period.

If the change in the absolute value IaI of the accelerator opening change rate a is equal to or larger than the predetermined threshold value IaIth, the subroutine S114 for correcting the charge / discharge control amount Pchg is executed, and the process proceeds to S116. Proceed to S116. The charge / discharge control amount Pchg correction subroutine S114, which is a feature of this embodiment, will be described with reference to the flowchart shown in FIG.

First, it is determined whether the change in the accelerator opening degree change rate a is in the direction of accelerating or decelerating the vehicle (S1140). If the change is in the acceleration side, the charge / discharge control amount Pchg calculated in S108 is determined. Determines whether the vehicle is on the discharging side or the charging side (S1142).
It is determined whether the charge / discharge control amount Pchg calculated in 8 is on the charging side or on the discharging side (S1144).

According to the discrimination in S1140 to S1144, the change in the accelerator opening change rate a is in a direction of accelerating, and the charge / discharge control amount Pchg calculated in S108 is on the discharge side, or the accelerator opening change rate is If the change in a is in the direction of deceleration and the charge / discharge control amount Pchg calculated in S108 is on the charging side, the absolute value of the charge / discharge control amount Pchg is reduced (including the case where it is set to 0), The corrected charge / discharge control amount is set to Pchg ′, and the process proceeds to S116.

The change in the accelerator opening change rate a is in a direction of accelerating, and the charge / discharge control amount Pchg calculated in S108 is on the charging side, or the change in the accelerator opening change rate a is decelerated. If the charge / discharge control amount Pchg calculated in S108 is on the discharge side, the absolute value of the charge / discharge control amount Pchg is increased by a predetermined amount, and is set as a corrected charge / discharge control amount Pchg ′, and S116 Proceed to.

In S116, the vehicle drive power request value P
The corrected charge / discharge control amount Pchg 'is added to d' to obtain an engine power required value Pe '.
(S116). Next, a method of controlling each part of the hybrid engine based on the calculated required engine power value Pe 'will be described below.

The internal combustion engine controller 13 determines an engine operating point at which the internal combustion engine 1 has the highest efficiency based on the received engine power demand value Pe 'and the fuel efficiency map, and determines the intake air amount corresponding to this engine operating point. (Engine torque request value) and engine speed request value Ne are determined. Further, the internal combustion engine control device 13 controls the throttle valve opening based on the determined intake air amount and transmits the engine speed request value Ne to the hybrid control device 16.

The hybrid control device 16 receives the required engine speed Ne and controls the first rotating electric machine 1010 to control the number of revolutions of the first rotary electric machine 1010 so as to satisfy the received required engine speed Ne. A torque request value T1 of the first rotating electric machine 1010 is calculated based on the received rotational angular velocity difference between the two rotors of the first rotating electric machine 1010,
Further, a torque required value T2 of the second rotating electrical machine 1020 is calculated from a difference between the vehicle driving torque required value Td 'and the torque required value T1 of the first rotating electrical machine 1010, and these torque required values T1, T2 are driven. Output to the driving device 14
Controls the current supplied to both rotating electric machines 1010 and 1020 so as to generate the torque request values T1 and T2.

The threshold value IaIt in S110
h is set to a value that results in the terminal voltage of the power storage device 15 being higher or lower than a predetermined range. By doing so, the above-described respective effects can be obtained. (Modification 1) In this embodiment, the threshold value IaIth
Is a constant value, but may be changed to a suitable value appropriately based on the storage map according to the remaining capacity.

[0040]

Embodiment 2 Another embodiment of the control device for a hybrid electric vehicle according to the present invention will be described with reference to the flowcharts shown in FIGS. In this embodiment, in the first embodiment, the variable a of the driving state of the vehicle is changed to the vehicle drive power request value Pd calculated in S104 instead of the accelerator opening change amount ΔACC (that is, the accelerator opening change rate) in a predetermined time. The only difference is that the change amount ΔPd in the predetermined time period of 'is set. In this embodiment, the threshold value IaIth is naturally changed to an appropriate value according to the change of the variable a.

It is apparent that the above-described functions and effects can be achieved even in this manner.

[0042]

Embodiment 3 Another embodiment of the control device for a hybrid electric vehicle according to the present invention will be described with reference to the flowchart shown in FIG. In this embodiment, only steps S118, S120, and S122 are added to the flowchart shown in FIG. 2 of the first embodiment, and only these steps will be described.

In S118, it is determined whether or not a predetermined time t1 has elapsed since it was previously detected that the absolute value of the variable a of the driving state of the vehicle exceeded the threshold value IaIth.
If it exceeds, the process proceeds to s116, and the correction of the charge / discharge control amount Pchg is not performed. On the other hand, if not exceeded, s12
0, and further, within a predetermined short time Δt shorter than the predetermined time t1, after detecting that the absolute value of the variable a of the driving state of the vehicle has exceeded the threshold value IaIth. It is determined whether or not the vehicle has returned to the original vehicle operating state, which is defined as a state in which the vehicle's operating state approximates the original vehicle operating state. Pchg is not corrected.

A predetermined time t1 has elapsed since the absolute value of the variable a of the operating state of the vehicle exceeded the threshold value IaIth, and the variable a Is detected within the predetermined short time Δt shorter than the predetermined time t1 after detecting that the absolute value has exceeded the threshold value IaIth, and has not returned to the original driving state of the vehicle. , The previously corrected charge / discharge control amount Pch
It is determined that g ′ is used as the current charge / discharge control amount Pchg ′ (S122), and the process proceeds to S116.

With this configuration, the change in the charge / discharge control amount is maintained for a predetermined time after the change in the operating state causing an excessive voltage change of the power storage means is completed. In addition, it is possible to prevent the battery voltage from excessively changing due to the influence.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control device for a hybrid electric vehicle according to the present invention.

FIG. 2 is a flowchart showing a control operation of the control device shown in FIG.

FIG. 3 is a flowchart showing a step of S114 shown in FIG. 2;

FIG. 4 is a flowchart illustrating a control operation according to a third embodiment.

FIG. 5 is a diagram showing an example of a map for obtaining a charge / discharge control amount Pchg.

[Explanation of symbols]

1 is an engine, 10 is a power transmission means, 1010 is a first rotating electrical machine, 1020 is a second rotating electrical machine, 15 is a power storage device (power storage device), 16 is a hybrid control device, and 13 is an internal combustion engine control device (control device). ) And 7 are accelerator pedals (driving state detecting means), S100 and S102 are driving state detecting means, S104 is a vehicle driving power required value determining means, S1
06 is remaining capacity detection means, S108 is charge / discharge control amount setting means, S116 is control means, S110, S114, S11.
8, S120 and S122 are charge / discharge control amount changing means.

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[Procedure amendment]

[Submission date] June 17, 1999 (1999.6.1
7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

In the control apparatus for a hybrid electric vehicle according to the first aspect of the present invention, in the control of the hybrid electric vehicle described above, particularly in a direction in which an excessive change in voltage of the power storage means is caused by a change in an operating state, the voltage change is regulated. Change the charge / discharge control amount. With this configuration, even when the operating state is suddenly changed, the battery voltage does not change excessively, so that an alarm is not generated, and the charging / discharging current is not interrupted to protect the battery. Can be prevented from being excessively increased or shortage, and the performance degradation can be suppressed. Also
For example

As shown in FIG. 5 and FIG.
When the charge / discharge control amount is larger than the specified range,
Set and charge / discharge control when remaining capacity is less than the specified range
Set the amount to the specified value on the charging side, and
When the remaining capacity decreases to a small value, the charge / discharge control amount is released as described above.
From the specified value on the charging side to the specified value on the charging side.
Control.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] According to the second aspect, hard Iburi'<br/> de further in the control apparatus for an electric vehicle, the charge and discharge control amount by a change in the accelerator opening occurring excessive voltage variation of the above-mentioned storage means Is changed, it is possible to quickly (precedingly) detect a change in the driving state of the vehicle without newly providing a sensor or the like. According to the configuration of claim 3
If further the control device of the hybrid electric vehicle,
Since the charge / discharge control amount is changed by the change in the vehicle drive power request value Pd 'that causes the above-described excessive voltage change of the power storage means, the control process used to determine the engine power request value Pe' can be shared. The control can be performed without newly providing a sensor or the like.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008] According to the fourth aspect, further in the control unit Ha Iburi'<br/> de electric vehicle, a change in the operating state is the acceleration state, and, in the control of the charge and discharge control amount discharge side In some cases, or when the change in the operating state is a deceleration state, and the control of the charge / discharge control amount is on the charge side,
The absolute value of the charge / discharge control amount is reduced.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

According to this configuration, necessary control can be easily performed by changing the charge / discharge control amount (charge / discharge power required value Pb ′) used for engine power control without employing complicated control. . According to the configuration of claim 5
If further the control device of the hybrid electric vehicle,
When the change in the operation state is the acceleration state, and the control of the charge / discharge control amount is on the charge side, or when the change in the operation state is the deceleration state, and the control of the charge / discharge control amount is on the discharge side, In some cases, the absolute value of the charge / discharge control amount is increased.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

Next, the remaining capacity of the battery is read from the SOC meter 17 (S106), and based on the remaining capacity, the charge / discharge control amount Pchg (the charge / discharge power required value Pb 'in this specification) is determined.
Is calculated (S108). In this embodiment, the charge / discharge control amount Pchg is calculated when the remaining capacity is excessively large so that the remaining capacity is in an appropriate range so that the power storage device 15 can always perform a predetermined amount of charge / discharge. The charge / discharge control amount Pchg is set on the discharge side, and the charge / discharge control amount Pchg is set on the charge side when the remaining capacity is excessively small. When the capacity is relatively large, the battery is slightly discharged, and when the remaining capacity is relatively small, the battery is slightly charged. The charge and discharge control quantity Pchg, the Ru determined from the map of the remaining capacity to store pre Me and discharge control quantity Pchg (see FIG. 5).

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Claims (7)

[Claims] 1. An engine for generating engine power, power transmission means including a rotating electric machine for converting a part or all of the engine power to electric power and generating at least a part of vehicle driving power, and A control device for a hybrid electric vehicle that controls a hybrid engine including a power storage unit that exchanges power, a driving state detection unit that detects driving state data related to a driving state of a vehicle, a vehicle drive for driving a vehicle based on the driving state data. Vehicle drive power request value determination means for determining a power request value; remaining capacity detection means for detecting remaining capacity data relating to the remaining capacity of the power storage means; the remaining capacity of the power storage means being in a predetermined range based on the remaining capacity data. Charge / discharge control amount setting means for determining the charge / discharge control amount for the power storage means, Control means for controlling the hybrid engine including the engine so as to generate engine power that satisfies the vehicle drive power demand value and the charge / discharge control amount determined by a stage; and A control device for a hybrid electric vehicle, comprising: charge / discharge control amount changing means for changing the charge / discharge control amount in a direction to regulate the voltage change when the operating state changes. 2. The control device for a hybrid electric vehicle according to claim 1, wherein the change in the operating state that causes an excessive change in voltage of the power storage means is a change in an accelerator opening. 2. The control device for a hybrid electric vehicle according to claim 1. 3. The control device for a hybrid electric vehicle according to claim 1, wherein the change in the operating state that causes an excessive change in voltage of the power storage means is a change in a vehicle drive power request value. The control device for a hybrid electric vehicle according to claim 1. 4. The control device for a hybrid electric vehicle according to claim 1, wherein said charging / discharging control amount changing means changes said driving state to an acceleration state and said charging / discharging control amount changes. When the control amount is on the discharge side, or when the change in the operation state is a deceleration state, and the charge / discharge control amount is on the charge side, reducing the absolute value of the charge / discharge control amount. A control device for a hybrid electric vehicle. 5. The control device for a hybrid electric vehicle according to claim 1, wherein said charging / discharging control amount changing means changes said driving state in an accelerating state, and said charging / discharging control amount changes. Increasing the absolute value of the charge / discharge control amount when the control amount is on the charge side, or when the change in the operation state is a deceleration state and the charge / discharge control amount is on the discharge side. A control device for a hybrid electric vehicle. 6. The control apparatus for a hybrid electric vehicle according to claim 1, wherein said charge / discharge control amount changing means detects a change in said operating state which causes an excessive voltage change of said power storage means. A control device for a hybrid electric vehicle, wherein the control unit changes the charge / discharge control amount for a predetermined period of time. 7. The control device for a hybrid electric vehicle according to claim 6, wherein said charge / discharge control amount changing means is provided for a predetermined time after a change in said operation state causing an excessive voltage change of said power storage means. The control device for a hybrid electric vehicle, wherein the control of the charge / discharge control amount is continued during the operation.