JP3429068B2 - Hybrid powered electric vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
Energy used for moving vehicles, especially for electric vehicles
Power supply combined with power supply and power supply
The present invention relates to a power control device. [0002] 2. Description of the Related Art Generally, an energy power supply and a power supply
Hybrid power-supply type vehicles, etc.
The output power from the energy power supply
Need to be smaller. For this reason, the conventional hybrid
For example, Japanese Patent Application Laid-Open No. 50-153
As disclosed in Japanese Patent Publication No. 228,
-Combines a battery with a high-output power battery
Power to the load using a hybrid hybrid power supply
The amount of operation of the operating device (eg, accelerator pedal)
(For example, the amount of depression of the accelerator pedal).
Set the flow and use the power shortage from the energy battery during acceleration
It is known to supplement the minute with a power battery. In addition, Japanese Patent Laid-Open Publication No. 50-15240 discloses
As shown, the energy and power supplies are combined.
It is equipped with a combined hybrid type power supply.
-When the remaining power capacity of the power
It is known that power is supplemented by charging from a power source.
You. Further, Japanese Patent Application Laid-Open No. 50-153227 discloses
Energy power and power power
With a hybrid power supply
When charging the battery, the energy
Current that limits the output current value from the
A device provided with a limiting circuit is known. [0004] However, as described above,
First, in a conventional hybrid-powered electric vehicle,
JP-A-50-153228 and JP-A-50-15
No. 240 uses a hybrid power supply.
Some technologies require a certain amount of control without regard to the driving conditions of the vehicle.
Control, for example, when acceleration is continuous or when acceleration
If the vehicle is traveling at high speeds, climbing uphill may cause a large
When running on a load, the capacity of the power
In addition, there is a disadvantage that sufficient acceleration cannot be performed. Further, Japanese Patent Application Laid-Open No. 50-153227 discloses
In the disclosed technology, the output current from the energy source is
To limit to a certain value or less, for example, the acceleration frequency is high
When traveling uphill, a large amount of people and luggage are loaded
The power release from the power supply is large.
And the battery is not charging in time to accelerate
Has the disadvantage of insufficient capacity. [0006] The present invention has been made in view of such a point.
Yes, and the goal is if the acceleration is high,
When traveling uphill with a large amount of people or luggage loaded
Power is required when acceleration is required.
Control to ensure that the power
A power supply type electric vehicle is provided. [0007] SUMMARY OF THE INVENTION To solve the above problems,
In order to achieve the object, the hybrid
The source-type electric vehicle has the following features.
I have. That is,C to control the power supply and the fuel cell
Hybrid power supply with hybrid power supply system
In a moving vehicle, a signal indicating accelerator opening and vehicle speed
Determine whether the vehicle is accelerating or traveling at a constant speed based on the signal
The running state determination means and the charging of the power supply device are completed.
Charging state determining means for determining whether or not the vehicle
Both cars are running at a constant speed and the power supply is fully charged.
When the power is not required,
The output from the fuel cell to the electric motor and the running of the vehicle
A signal indicating the frequency of acceleration while traveling and climbing a hill while the vehicle is traveling
Based on the signal indicating the angle and the signal indicating the weight of the vehicle.
The first power set based on the
While charging the power supply, while the vehicle is accelerating
Sometimes, the driving set based on the signal indicating the vehicle speed is performed.
A row resistance power, a signal representing the acceleration time of the vehicle,
A signal indicating the frequency of acceleration of the vehicle while the vehicle is traveling;
A signal indicating the inside climbing angle and a signal indicating the loading weight of the vehicle.
And the sum of the second electric power set based on the
Control means for controlling output from the battery.
The control means may increase the climbing angle as the acceleration frequency increases.
The larger the load weight, the larger the
1 and the acceleration time is set to a large value.
The longer, the higher the acceleration frequency, the larger the climbing angle
The larger the load weight, the greater the second power
Set to a large valueIt is characterized by: [0008] [0009] [0010] [0011] [0012] [0013] As described above, the hybrid electric vehicle according to the present invention
Since the source-type electric vehicle is configured,
The power supply output when the vehicle accelerates
Electric power can be reliably secured. (I) When the vehicle is accelerating, If the state of acceleration equal to or higher than the predetermined
The acceleration and the value determined by the function of acceleration continuous time.
Increase the amount of discharge of the energy power
To reduce the amount of discharge. Alternatively, the acceleration
If the status occurs frequently within a predetermined time, it is determined by a function of the frequency.
Increases the discharge of the energy source based on the specified value
Then, the discharge amount of the power supply is reduced. When traveling uphill, the function of the uphill angle is
Increase the discharge of the energy source based on the determined value.
In addition, the discharge amount of the power supply is reduced. If you are traveling with a large load of people or luggage,
Energy power based on the value determined by the load function
Of the power supply and decrease the discharge of the power supply. (Ii) The vehicle has finished accelerating and has
When charging from the power supply to the power supply, When a condition with a predetermined acceleration or more frequently occurs within a predetermined time
Power based on a value determined by a function of that frequency.
Increase the amount of power charged. When traveling uphill, a value determined by a function of the uphill angle
, The amount of charge of the power source is increased. [0017] The vehicle is loaded with a large amount of people and luggage
The load, based on the value determined by the load function.
Increase the amount of power supplied to the power supply. [0018] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described in detail with reference to FIG. FIG. 1 shows an embodiment of the present invention.
Block showing the configuration of a hybrid-powered electric vehicle
FIG. In FIG. 1, a hybrid power supply system 1
00 is the energy power supply 10, the power supply 2
0, power control device 50, motor 60 (for example, DC mode
). Also, this hybrid power system
100 is mounted on an electric vehicle driven by electric power.
The energy power supply 10 and the
And electric power supplied from the power supply device 20 to the electric motor 60
It has the function of controlling the amount. For use as the energy power supply 10
Is a fuel cell power supply device (hereinafter abbreviated as fuel cell)
So-called fuel cells, lead-acid batteries, and electrochemical reactions
Power, etc., and large capacity and low power combining these
The battery has excellent power supply characteristics.
To supply the necessary power during sexual driving. On the other hand, compared to fuel cells
All power supplies with small capacity and high power supply characteristics
The power source device 20 (hereinafter abbreviated as a power supply) is an electric power source.
Multilayer capacitors, nickel-cadmium batteries (hereinafter
Battery), or a combination of these.
Yes, such as when the vehicle starts, accelerates, or brakes
When a large load power is required for the motor 60
Supply and absorb (charge) power during braking.
It is a power supply device that can charge and discharge a large output. The power control device 50 includes a CP as a control unit.
Power regulator for regulating power supplied to U30 and motor 60
40, the negative voltage supplied to the electric motor 60 is provided.
A prescribed ratio of the load power to the fuel cell 10 and the power supply 20
Distribute with. In particular, large load power is required during acceleration, etc.
The power supply 20 preferentially supplies power.
If the load power is small,
It supplies load power from the battery 10 to the motor 60 and
-Power control to charge the battery. The CPU 30 performs acceleration and deceleration of the vehicle.
Operating means (for example, accelerator opening, etc.
In this embodiment, the operation state of the accelerator opening is shown for convenience.
Signal a, vehicle speed sensor (not shown) for detecting the speed of the vehicle
Signal v indicating the vehicle speed from the vehicle, when the vehicle is traveling uphill
A signal r representing a climbing angle from a climbing angle sensor (not shown)
And the loading load when traveling with people or luggage loaded
Based on a signal w representing a load from a sensor (not shown)
Thus, the power controller 40 is controlled. The power adjuster 40 receives a signal transmitted from the CPU 30.
Output power from the fuel cell 10 based on the control signal
The distribution between Pe and the output power Pp from the power supply 20 is
And determine the load power Pm of the motor as the total power.
Supply to the motive 60. Further, the output power from the fuel cell 10 is
Power Pe is supplied to the power source to charge the power source
Is controlled as follows. Next, referring to FIG.
A specific operation will be described. FIG. 2 shows the power controller 40.
FIG. 3 is a circuit diagram showing the configuration of FIG. In FIG. 2, a power conditioner
40 is a pulse generator 41, pulse modulators 42 to 44 and
And a regenerative signal generator 45.
Turn on and off transistors A to D according to the pulse to burn
Between the fuel cell 10 and the power source 20 and the electric motor 60
Control power supply. Specifically, the output control of power Pe
When a control signal is input from the CPU 30 to the modulator 42,
The pulse width is modulated by the modulator 42 based on the control signal of
The transistor A is turned on, and the fuel cell 10 and the electric motor 60 are turned on.
Is energized. Also, the state in which the transistor A is turned on
In this state, the output control signal of the power Pp is sent from the CPU 30 to the modulator.
42 (in the case of Pp> 0 in FIG. 2),
The modulator 43 modulates the pulse width based on the control signal, and
When the transistor B is turned on, the power source 20 and the electric motor 60 are turned on.
Is energized. Further, when the transistor A is turned on,
In the state, the charge control signal of the electric power Pp is sent from the CPU 30 to the modulator.
44 (in the case of Pp <0 in FIG. 2),
The pulse width is modulated by the modulator 44 based on the control signal, and the
When the transistor C is turned on, the regeneration signal generator 45
, The transistor D is turned on, and the fuel
The pond 10 and the power supply 20 are energized, and the power supply 20
Charging state. [Control Operation] Next, referring to FIGS.
Then, a specific power supply control operation of the power supply device 50 will be described.
I will tell. <Relationship between accelerator opening a and total output power Pm> FIG.
3 (a) and FIG. 3 (b) show the relationship between the accelerator opening a and the electric motor 60.
FIG. 6 is a diagram illustrating a total output Pm by a time t. FIG.
FIG. 7 is a diagram showing the total output Pm of the engine 60 as an accelerator opening a.
You. 3 and 4, the total output Pm of the electric motor is the
Is linked to the accelerator opening a for accelerating the acceleration. Immediately
That is, as shown in FIG.
Start at time t1 and accelerate the accelerator until time t2
Operate in the direction, and after reaching a certain speed,
When the accelerator is operated in the acceleration direction between t3 and t4,
The motor output Pm is also from time t1 to t2 and t3.
Between t4 and t4
Change. In addition, as shown in FIG.
When the force power Pm is shown based on the accelerator opening a,
In the electric power control device 50, the electric motor
Control the amount of power to 60. <Relationship between vehicle speed V and running resistance Pv>
Referring to FIGS. 5 and 6, electric power of vehicle speed V and running resistance Pv
A specific power supply control operation of the supply device 50 will be described.
Here, FIGS. 5 (a) and 5 (b) are similar to FIGS.
The vehicle speed V and running resistance of the vehicle when the cell opening a changes
FIG. 6 is a diagram showing a change in Pv in time t. FIG. 6 shows that the vehicle
FIG. 5 is a diagram showing a traveling resistance Pv received during traveling as a vehicle speed V.
You. Note that the running resistance Pv is, for example,
Rolling resistance between the generated wheels and the road surface and load on the vehicle body
The vehicle maintains the current vehicle speed V while receiving air resistance, etc.
It is the power required to carry. Now, in FIG. 5 and FIG.
The stopped vehicle starts and accelerates at time t1.
When started, the vehicle speed gradually increases from zero until time t2.
And maintain a constant vehicle speed from time t2 to time t3.
(The accelerator opening a in FIG. 4 is kept at a constant value.) So
After that, in order to further increase the speed at time t3,
By the time the cell opening is operated in the acceleration direction, the vehicle
Speed increases. Then, at time t4, the accelerator opening is
Since the state is returned from time t2 to t3 in FIG.
The vehicle speed returns to the time t2. Meanwhile, traveling
The resistance Pv is smaller than the total output Pm of the electric motor in FIG.
Although small, it changes in a manner similar to a change in vehicle speed.
That is, as shown in FIG. 5, from time t1 to t2 and from time t3 to t2.
4 when the vehicle speed changes in the acceleration direction, the running resistance power P
v is also between times t1 and t2 and between times t3 and t4.
It changes in a direction that increases according to the change in the vehicle speed. Also,
As shown in FIG. 6, the running resistance power Pv during running of the vehicle is
When shown based on the speed V, the power is
The power control device 50 controls the amount of power supplied to the motor 60.
I will. <Power from fuel cell 10 and power supply 20
Relationship of Power Supply to Motivation 60> Next, referring to FIG.
Electric power from the fuel cell 10 and the power supply 20 to the electric motor 60
A specific power supply control operation of supply will be described. here,
FIGS. 7A and 7B are similar to FIGS. 3 and 5 described above.
When the accelerator opening a and the vehicle speed V change
Power supply to the electric motor 60 of the pond 10 and the power supply 20
FIG. 4 is a diagram showing changes in the strengths Pe and Pp in time t. (Control of Power Supply from Fuel Cell 10) FIG.
In (a), the stopped vehicle moves at time t1.
Start and accelerate, and the vehicle speed gradually increases from zero until time t2
From the fuel cell 10 to the electric motor 60 in order to increase
A predetermined amount of power is supplied. After that, the vehicle
From the time t3 to the time t3.
The electric power is supplied to the electric motor 60 to maintain the opening a at a constant value.
The fuel cell 10 is supplied from time t2.
Until t2 ', in addition to the power required for steady running, a power supply
The power Pc for charging the battery 20 is added and output.
Thereafter, the charging of the power supply 20 ends at time t2 '.
To maintain a constant vehicle speed from time t2 'to time t3.
Power Pe1 is supplied to the electric motor 60. Further at time t3
From time t4 to time t4, the fuel cell 10
Supplies electric power to the electric motor 60. Then, at time t4
Changes the accelerator opening a from time t2 to t3 in FIG.
Since the vehicle speed has been returned, the vehicle speed returns to the time t2.
You. The vehicle is a constant vehicle from time t4 to time t5.
Maintain the speed (keep the accelerator opening a in FIG. 4 at a constant value)
Power is supplied to the electric motor 60 for
Fuel cell 10 is required for steady running from time t4 to t5
Power to charge the power supply 20 in addition to the
Pc is added and output. Then, at time t5,
When the charging of the power supply 20 is completed, the vehicle speed becomes constant after time t5.
Is supplied to the electric motor 60 to maintain the power.
Note that the electric power Pc depends on the running state of the vehicle, for example, acceleration time and
It changes depending on acceleration frequency, uphill running, loading load, and the like. (Power supply control from power supply 20)
On the other hand, in FIG.
Starts and accelerates at, and the vehicle speed becomes zero until time t2.
From the power supply 20 in order to gradually increase
A predetermined amount of power is supplied to the motive 60. This power supply
The supply of electric power by the fuel cell 20 differs from that of the fuel cell 10.
At time t1, the power becomes the largest, and the acceleration ends.
The supply power becomes zero as time t2 expires
Controlled. That is, the power supply 20 is instantaneously at time t1.
Supply the maximum electric power to the electric motor 60, and the acceleration ends.
At this point, the power supply is controlled to stop. That
Later, the vehicle maintains a constant vehicle speed from time t2 to time t3.
(To maintain the accelerator opening a in FIG. 4 at a constant value)
Is supplied with power only from the fuel cell 10,
The power supply 20 operates between the time t2 and the time t2 '.
Electric power Pc is supplied from 0 and charging is performed. This
The power Pc is applied to the power supply between the time t1 and the time t2.
20 is the power supplied to the motor 60 from the power
Power amount corresponding to the power decrease from time t1 to t2
It is. Thereafter, at time t2 ', the power supply 20 is charged.
When the operation is completed, the power supply is operated from time t2 'to time t3.
Electric power is not supplied from the motor 20 to the electric motor 60. More time
Between time t3 and time t4, power supply between time t1 and time t2 is performed.
As in the case of feeding, only the amount necessary to increase the vehicle speed,
Power is supplied from the power supply 20 to the electric motor 60. That
Later, between time t4 and time t5, the vehicle maintains a constant vehicle speed.
And the power supply 20 supplies power from the fuel cell 10
Pc was supplied and decreased between time t3 and t4
The electric energy is charged. After time t5, the vehicle
Since the constant vehicle speed is maintained, the power supply 20
No power is supplied to the electric motor 60. Explained above
As described above, the power control device 50
The power of the source 20 is distributed and controlled at a predetermined rate.
You. Note that the power Pp from the power supply is equal to the charging power Pc.
As before, the driving state of the vehicle, for example, the acceleration time
And the frequency of acceleration, uphill running, loading load, etc.
You. [Power Supply Control Flow] Next, FIGS.
3, the power control device 50 described with reference to FIGS.
Will be described. 8 to 13 show power control.
5 is a flowchart describing a control procedure of the device 50.
In FIG. 8 and FIG. 1, the process is started, and step S2
In step S2, the accelerator opening of the vehicle is represented.
The signal a is input to the CPU 30.
The function Faa (a) is changed to the accelerator opening a by the signal a.
And the function Faa (a)
Power Pa required from accelerator opening is calculated based on
I do. Thereafter, the process proceeds to step S4, where
Similarly, the signal v representing the vehicle speed V is input to the CPU 30.
Then, the CPU 30 calculates the function Fa based on the input signal v.
v (a) is set as a parameter representing the vehicle speed V, and
Required to maintain vehicle speed based on function Fav (a)
Is calculated. Then, in step S6,
Power Pa, P calculated in step S2 and step S4
Compare the magnitude of v. That is, in step S6, the vehicle
If acceleration is determined and Pa> Pv is determined,
The power Pa required for acceleration of the vehicle is adjusted to maintain the vehicle speed.
It is determined that the vehicle is currently accelerating because it is larger than the row resistance power Pv.
Refused. On the other hand, in step S6, it is determined that Pa <Pv.
The power Pa required for acceleration of the vehicle maintains the vehicle speed.
Is smaller than the running resistance power Pv for
It is determined that the vehicle is traveling at a constant speed or inertia. Therefore, step S
If Pa> Pv is determined in step 6 (determined in step S6)
Is YES), the process proceeds to step S8. Step S8
Then, in the CPU 30, traveling for maintaining the vehicle speed is performed.
The amount of power Pe to be supplied from the fuel cell 10 to the resistance power Pv
Set as Then, in step S10 shown in FIG.
Sets the coefficient Cac representing the amount of charge to the power supply 20 to zero
, And the process proceeds to step S12. In step S12
Is a step from the electric energy Pa calculated in step S2.
The power amount Pv calculated in S4 is subtracted, and actual acceleration is performed.
The required power Pd is calculated. (If the acceleration time is long)
Proceeding to S14, the power Pd required for acceleration becomes a predetermined constant Ka
It is determined whether it is greater than one. That is, step S14
Determines the acceleration time of the vehicle, and Pd> Ka1
Is determined, the electric power Pd required for acceleration of the vehicle is predetermined.
Is larger than the constant Ka1 of the vehicle.
Is determined. On the other hand, in step S14, Pd <Ka1
If it is determined that the power Pd required for the vehicle to accelerate
The vehicle is currently accelerating because it is smaller than the constant Ka1.
It is determined that acceleration was performed in a shorter time than the predetermined time. Follow
When it is determined in step S14 that Pd> Ka1
(When the determination is YES in Step S14), Step S
Proceed to 16. In step S16, the acceleration duration is indicated.
The constant Ta is incremented, and the acceleration time of the vehicle is calculated.
Perform measurement. Thereafter, the process proceeds to step S20, and in FIG.
A signal Ta indicating a vehicle acceleration duration, which will be described later, is output from the CPU 3.
0, and in the CPU 30, the input signal Ta
The function Fa1 (Ta) is calculated based on the acceleration duration Ta.
Parameter, and displays the amount of charge to the power supply 20.
A coefficient Cac is calculated. On the other hand, in step S14, Pd
<Ka1 (when the determination is N in step S14)
If (O), the process proceeds to step S18. In step S18
Indicates that acceleration is not being continued and indicates the acceleration duration
The constant Ta is set to zero, and the process proceeds to step S20. (In case of high acceleration frequency) Then, step S
22 and the electric power Pd required for acceleration becomes a predetermined constant Ka2
It is determined whether it is greater than. That is, in step S22
Is determining the acceleration time of the vehicle, and Pd> Ka2
If it is determined that the power Pd required for the vehicle to accelerate
It is determined that the vehicle is currently accelerating because it is larger than the constant Ka2.
Refused. On the other hand, in step S22, it is determined that Pd <Ka1.
If the power is cut off, the power Pd required for the vehicle to accelerate
Currently the vehicle is not accelerating because it is smaller than several Ka2
It is determined that acceleration was performed in a shorter time than the predetermined time. Follow
When it is determined in step S22 that Pd> Ka2
(When the determination is YES in Step S22), Step S22
Proceed to 24. In step S24, acceleration is within a certain time.
Is determined. That is, in step S24
Is used to determine the acceleration frequency, and the cycle
If the vehicle is accelerated with high
Is determined to be. On the other hand, in step S24,
If there is no periodic acceleration within
It is determined that the acceleration frequency is low. Therefore, step S2
4 when it is determined that the acceleration frequency is high (step S2
When the determination is YES in Step 4), the process proceeds to Step S26. S
In step S26, a constant Na indicating the acceleration frequency is incremented.
And measure the acceleration frequency of the vehicle. That
Then, the process proceeds to step S30, in which a vehicle is added as described later with reference to FIG.
The signal Na indicating the speed frequency is input to the CPU 30 and the CPU 30
In 30, the function Fa 2 (N
a) is set as a parameter based on the acceleration frequency Na,
The amount of charge to the power supply 20 calculated in step S20 is
Of the coefficient Cac and the parameter Fa2 (Na)
And a coefficient Cac representing the amount of charge to the new power supply 20
Is calculated. On the other hand, in step S22, it is determined that Pd <Ka2.
In the case of being rejected (when the judgment is NO in step S22),
Proceed to step S32. Also, at a certain time in step S24,
If it is determined that acceleration has not been
(If the determination in step S24 is NO), a constant representing the acceleration frequency
Na is set to zero, and the process proceeds to step S30. (During uphill traveling) After that, the steps shown in FIG.
The process proceeds to step S32, and the vehicle travels uphill as described later with reference to FIG.
Is input to the CPU 30 and the signal
At 30, the function Far (r) is calculated by the input signal r.
Step S is set as a parameter based on the climbing angle r.
A coefficient C representing the amount of charge to the power supply 20 calculated at 30
Ac and parameter Far (r) are added, and new power
Calculating a coefficient Cac representing the amount of charge to the power supply 20; (When carrying luggage or people)
Proceeding to step S34, the load weight of the vehicle described later with reference to FIG.
Is input to the CPU 30, and the CPU 30
The function Faw (w) is calculated based on the input signal w and the loading weight w.
Is set as a parameter based on the
And a coefficient Cac representing the amount of charge to the power supply 20 calculated.
Parameter Faw (w) and a new power source 2
A coefficient Cac representing the amount of charge to 0 is calculated. Then
Proceeding to step S36, the CPU 30 executes step S36.
The electric power Pe supplied from the fuel cell calculated in step 8 and the acceleration
The required power Pd and the charge amount calculated in step S34 are displayed.
And the multiplied value of the new fuel cell 10
It is set as the amount of power Pe to be supplied. Thereafter, the flow advances to step S38 shown in FIG.
No. In step S38, the processing calculated in step S2 is performed.
Calculated in step S36 from the electric power Pa required for the speed
The power Pe to be supplied from the fuel cell 10 is subtracted, and the fuel
The power shortage that is insufficient with the output from battery 10
The power Pp for assisting the supply from the source 20 is calculated. So
After that, in step S40, the CPU 30
Calculated in each of the steps S36 and S38.
The added power amounts Pe and Pp are added, and the power
The total output power Pm is calculated. Next, proceed to step S42.
In step S36 and step S38,
Based on the calculated amount of power, the CPU 30
To control the output Pe from the fuel cell 10 and the power supply.
These outputs Pp are distributed at a predetermined ratio, and the electric motor 60 and the power
The power is output as the total output power Pm to the power supply 20. <During constant speed or inertial running> Step S
If it is determined in step 6 that Pa <Pv, the vehicle needs to accelerate.
Power Pa is equal to running resistance power Pv for maintaining vehicle speed.
The current vehicle is judged to be running at constant speed or inertia.
It is. Therefore, it was determined that Pa <Pv in step S6.
In this case (when the determination is NO in step S6), the process shown in FIG.
The process proceeds to step S50. In step S50, the power
It is determined whether the charging of the power supply 20 is completed. Stay
In step S50, the charging of the power supply 20 is completed.
If it is determined that there is not (NO in step S50)
), The process proceeds to step S52. In step S52
Indicates charging in the basic state during constant driving or inertial driving
The power Kc is set as the charging power Pc of the power supply 20. (When acceleration frequency is high) Thereafter, the process proceeds to step S54, and the vehicle described later with reference to FIG.
A signal Na indicating the frequency of acceleration during traveling is input to the CPU 30.
Then, the CPU 30 performs a function based on the input signal Na.
Fct (Na) is changed to a power supply based on the acceleration frequency Na.
Set as a parameter representing the output power Pc required for electricity
And step S52And the parameter Fct calculated by
(Na) and the power from the new fuel cell 10.
The power amount Pc to be output to the source is calculated. (During uphill traveling) Thereafter, the flow advances to step S56.
21. In FIG. 21, a vehicle climbing angle, which will be described later, while the vehicle is traveling uphill, is displayed.
Signal r is input to the CPU 30, and the input
The function Fcr (r) is calculated based on the climbing angle r by the input signal r.
A parameter representing the output power Pc required for charging the power supply
Pc calculated in step S54
The parameter Fcr (r) is added to the new fuel cell 1
From 0, the power amount Pc to be output to the power supply is calculated. (When carrying luggage or people)
Proceeding to step S58, the load weight of the vehicle described later with reference to FIG.
Is input to the CPU 30, and the CPU 30
The function Fcw (w) is calculated based on the input signal w and the loading weight w.
Represents the output power Pc required for charging the power supply based on
P set as a parameter and calculated in step S56
c and the parameter Fcw (w) are added, and a new fuel
The amount of power Pc to be output from the pond 10 to the power supply is calculated.
You. Thereafter, the process proceeds to step S60, where the CPU 3
0, the amount of power required for acceleration calculated in step S2
Pa and the power supply calculated in step S58
The required electric energy Pc is added to the electric power to be supplied from the fuel cell 10.
The power output power Pe is calculated. In the next step S62
Is the power Pc as the output power Pp from the power supply 20.
(Actually, the value of the output power Pp
Is negative), and then the steps described in FIG.
Proceed to step S40. In step S50, the power
When it is determined that the charging of the power source 20 is completed (step
When the determination is YES in step S50), the process proceeds to step S64.
No. In step S64, the output power Pe of the fuel cell 10
Only the power Pa required for acceleration is set. That
Thereafter, in step S66, the vehicle is not accelerating.
Therefore, the power Pp to be supplied from the power supply 20 is
Set to zero and then step S described in FIG.
Proceed to 40. FIG. 14 shows the vehicle drive output during acceleration.
In which the parameter Faa (a) is represented by the accelerator opening a
It is. FIG. 15 shows the drive output for the running resistance.
FIG. 5 is a diagram illustrating a parameter Fav (v) as a vehicle speed v. Ma
FIG. 16 shows the driving state necessary for maintaining the acceleration of the vehicle.
Parameter Fa1 (Ta) is represented by the acceleration duration time Ta.
FIG. FIG. 17 shows that the frequency of vehicle acceleration is high.
Parameter Fa2 (N
FIG. 3A is a diagram showing acceleration frequency Na. FIG.
Is a parameter that indicates the driving state required when the vehicle is traveling uphill.
FIG. 7 is a diagram illustrating the data Far (r) by a climbing angle r. Also figure
19 is a driving state required when loading a vehicle luggage or a person.
In which the parameter Faw (w) is represented by the loading weight w.
is there. FIG. 20 shows a state where the vehicle is traveling at a constant speed or inertia.
Parameter that represents the driving state required when the frequency of acceleration
FIG. 4 is a diagram showing a meter Fct (Na) by an acceleration frequency Na.
You. FIG. 21 shows a state in which the vehicle travels at a constant speed or inertia.
A parameter Fcr representing a traveling state required for uphill traveling
It is a figure showing (r) by the ascending angle r. Also, FIG.
When loading luggage or people during constant speed or inertial running of the vehicle
The parameter Fcw (w) representing the required driving state is set to the loading weight.
It is a figure represented by quantity w. In FIGS. 14 and 15, the husband
16 to 22 are convex upward and downward convex functions.
Is set to a straight line that is above the specified value and rises to the right.
It is. As described above, the power control of this embodiment
The device controls power in the following ways:
As a result, even if the vehicle continues to operate under high load,
Output power can be reliably ensured. (I) When the vehicle is in an accelerating state, If the state of acceleration equal to or higher than the predetermined
The acceleration and the value determined by the function of acceleration continuous time.
Increase the amount of discharge of the energy power
To reduce the amount of discharge. Alternatively, the acceleration
If the status occurs frequently within a predetermined time, it is determined by a function of the frequency.
Increases the discharge of the energy source based on the specified value
Then, the discharge amount of the power supply is reduced. When the vehicle is traveling uphill, the function of the uphill angle is
Increase the discharge of the energy source based on the determined value.
In addition, the discharge amount of the power supply is reduced. If you are traveling with a large load of people or luggage,
Energy power based on the value determined by the load function
Of the power supply and decrease the discharge of the power supply. (Ii) The vehicle has finished accelerating and
When charging from the power supply to the power supply, When a condition with a predetermined acceleration or more frequently occurs within a predetermined time
Power based on a value determined by a function of that frequency.
Increase the amount of power charged. When traveling uphill, a value determined by a function of the uphill angle
, The amount of charge of the power source is increased. Running with a large amount of people and luggage
The load, based on the value determined by the load function.
Increase the amount of power supplied to the power supply. The present invention may be implemented in any of the above embodiments without departing from the spirit thereof.
Applicable to modified or changed examples. For example,
In this embodiment, a power supply such as a lead storage battery is used as a fuel cell.
Was performed using an electric double layer capacitor, etc.
Only the battery described in the embodiment if it has the performance of
However, the present invention is not limited to this. In addition, the heat dissipation device
Has a mechanism to convert energy into heat and radiate heat to the outside
For example, it is not limited to the heater inside the vehicle, for example, installed outside the vehicle interior
Needless to say, the device may be used. [0045] As described above, the hybrid according to the present invention
Since the power supply type electric vehicle is configured, the following ~
By controlling the power in the manner shown in
Ensure output power of power supply even if operation continues
Can be (I) When the vehicle is in an accelerating state, If the state of acceleration equal to or higher than the predetermined
The acceleration and the value determined by the function of acceleration continuous time.
Increase the amount of discharge of the energy power
To reduce the amount of discharge. Alternatively, the acceleration
If the status occurs frequently within a predetermined time, it is determined by a function of the frequency.
Increases the discharge of the energy source based on the specified value
Then, the discharge amount of the power supply is reduced. When the vehicle is traveling uphill, a function of the uphill angle is used.
Increase the discharge of the energy source based on the determined value.
In addition, the discharge amount of the power supply is reduced. If you are traveling with a large load of people or luggage,
Energy power based on the value determined by the load function
Of the power supply and decrease the discharge of the power supply. (Ii) When the vehicle has finished accelerating and
When charging from the power supply to the power supply, When a condition with a predetermined acceleration or more frequently occurs within a predetermined time
Power based on a value determined by a function of that frequency.
Increase the amount of power charged. When traveling uphill, a value determined by a function of the uphill angle
, The amount of charge of the power source is increased. The vehicle is traveling with a large amount of people and luggage
The load, based on the value determined by the load function.
Increase the amount of power supplied to the power supply.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a hybrid-powered electric vehicle according to an embodiment of the present invention. FIG. 2 is a circuit diagram showing a configuration of a power regulator 40 according to an embodiment of the present invention. FIG. 3 is a diagram showing accelerator opening a and total output Pm of electric motor 60 in time t. FIG. 4 is a diagram showing a total output Pm of an electric motor 60 by an accelerator opening a. FIG. 5 is a diagram showing a change in vehicle speed V and running resistance Pv in time t when the accelerator opening a changes as in FIG. 3; FIG. 6 is a diagram showing a traveling resistance Pv received by the vehicle during traveling as a vehicle speed V. FIG. 7 shows the accelerator opening a and the vehicle speed V as shown in FIGS.
FIG. 6 is a diagram showing changes in the amounts of electric power Pe, Pp supplied to the respective electric motors 60 of the fuel cell 10 and the power supply 20 when time changes, with time t. FIG. 8 is a flowchart describing a control procedure of the power control device 50. FIG. 9 is a flowchart describing a control procedure of the power control device 50. FIG. 10 is a flowchart describing a control procedure of the power control device 50. FIG. 11 is a flowchart describing a control procedure of the power control device 50. FIG. 12 is a flowchart describing a control procedure of the power control device 50. FIG. 13 is a flowchart describing a control procedure of the power control device 50. FIG. 14 shows a parameter Fa representing a vehicle drive output during acceleration.
FIG. 3 is a diagram in which a (a) is represented by an accelerator opening a. FIG. 15 shows a parameter Fa representing a drive output corresponding to a running resistance.
FIG. 4 is a diagram in which v (v) is represented by a vehicle speed v. FIG. 16 is a diagram showing a parameter Fa1 (Ta) representing a traveling state necessary for sustaining acceleration of a vehicle by an acceleration duration time Ta. FIG. 17 is a diagram illustrating a parameter Fa2 (Na) representing a traveling state necessary when the frequency of acceleration of the vehicle is high, as an acceleration frequency Na. FIG. 18 is a diagram in which a parameter Far (r) representing a traveling state required when the vehicle travels uphill is represented by an uphill angle r. FIG. 19 is a diagram showing a parameter Faw (w) representing a traveling state required when loading a load or a person in a vehicle, as a loading weight w. FIG. 20 is a parameter Fct representing a traveling state necessary when the frequency of acceleration during constant speed or inertial traveling of the vehicle is high.
It is the figure which expressed (Na) by acceleration frequency Na. FIG. 21 is a view showing a parameter Fcr (r) representing a traveling state necessary for climbing a vehicle at a constant speed or inertial traveling by a climbing angle r. FIG. 22 is a parameter Fcw representing a traveling state required when loading a load or a person at a constant speed or inertial traveling of the vehicle.
It is a figure showing (w) by loading weight w. [Description of Signs] 10 ... Fuel cell power supply unit, 20 ... Power supply unit, 30
... CPU, 40 ... Power regulator, 50 ... Power control device, 6
0: electric motor, 42 to 44: pulse modulator, 41: pulse generator, 45: regenerative signal generator, 100: hybrid power supply system, Pe: output power from fuel cell, Pp ...
Output power from power supply, Pv: Power required to maintain vehicle speed, Pa: Power required during acceleration, Pm: Total power output from power regulator

Continuation of front page (56) References JP-A-59-136006 (JP, A) JP-A-63-276877 (JP, A) JP-A-5-59973 (JP, A) JP-A-4-29528 (JP) , A) Japanese Utility Model 2-10702 (JP, U) JP-B 51-10651 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60L 11/18 H02J 7/00

Claims (1)

(57) [Claims] [Claim 1] Controlling a power supply device and a fuel cell
Hybrid power supply with hybrid power supply system
In an electric vehicle, a vehicle based on a signal indicating an accelerator opening and a signal indicating a vehicle speed is used.
Traveling state determination means for determining whether both are accelerating or traveling at a constant speed
And whether or not the charging of the power supply device is completed
Charging state determining means for performing charging of the power supply device while the vehicle is traveling at a constant speed.
If not, the power required from the accelerator opening
Output power from the fuel cell to the electric motor, and
A signal indicating the acceleration frequency during both travels, and
Signal indicating the climbing angle of the vehicle and a signal indicating the loading weight of the vehicle
With the first power set based on
The power supply device is charged while the vehicle is operating.
When the vehicle is running at high speed, the speed is set based on the signal indicating the vehicle speed.
Signal indicating the running resistance power and the acceleration time of the vehicle
A signal indicating the frequency of acceleration of the vehicle during traveling;
A signal indicating the climbing angle of both vehicles and the weight of the vehicle
And the second power set based on the signal representing
Control to output from the fuel cell to the electric motor
Control means , wherein the higher the acceleration frequency is, the more
The larger the angle, the larger the load weight,
The first power is set to a large value and the acceleration time
The longer the acceleration, the higher the acceleration frequency, the higher the climbing angle
The larger the load, the larger the load weight,
A hybrid-powered electric vehicle, wherein the power is set to a large value .