JP3429067B2 - Hybrid powered electric vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
For moving vehicles, in particular, fuel cells used in electric vehicles
Power control of power supply combined with power supply
It concerns the device. [0002] 2. Description of the Related Art Usually, a fuel cell is used when its cell temperature is low.
Power efficiency is low, so
The power is also low. To overcome these shortcomings
For example, Japanese Patent Application Laid-Open No. 61-45569 discloses
As such, an electric heater is provided inside the cell of the fuel cell,
When the cell temperature of the battery is low, this heater is energized.
There is known an apparatus which heats an electrolytic solution or the like. Also this
With such a configuration, it is possible to activate the fuel cell early.
Can be. [0003] Further, a conventional hybrid power supply type electric vehicle is used.
For example, Japanese Patent Application Laid-Open No. 50-153228 discloses
As shown, a small output type energy battery and a large output
Hybrid type combined with power type power battery
Power is supplied to the load using a power supply of the type
(E.g., accelerator pedal)
The load current is set in accordance with the
Power battery from the energy battery at the time
What is supplemented by ri is known. Further, 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. [0005] However, as described above,
In a conventional hybrid powered electric vehicle,
In the technology disclosed in JP 61-45569 A, complicated
Requires heater mechanism, complicates battery structure
At the same time, there are disadvantages such as an increase in manufacturing cost. Further, Japanese Patent Application Laid-Open No. 50-153228 and
And a hybrid disclosed in JP-A-50-15240.
In the technology that uses the power supply of the quad type, the cell temperature of the battery is low.
When it is hot, it has a mechanism to heat the electrolyte etc.
Power output efficiency is poor until the cell temperature rises.
Disadvantage. The present invention has been made in view of such a point.
The purpose is to secure the fuel cell.
When the temperature is low, the output power is forcibly increased,
Self-heating by the heat generated by the internal resistance of the fuel cell itself,
A hybrid that quickly turns the fuel cell into a high-efficiency, high-power state
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, a housing for controlling the power supply device and the fuel cell.
Equipped with an hybrid power systemHybrid power supply
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
A cell temperature sensor that detects the temperature inside the fuel cell,
The vehicle is running at a constant speed and the power supply is fully charged.
When not, the power required from the accelerator opening
To the electric motor from the fuel cell and the fuel
With the first power set based on the temperature in the cell of the battery
Charging the power supply device with the fuel cell;
On the other hand, when the vehicle is accelerating, a signal representing the vehicle speed
And the running resistance power set based on the
And the second power set based on the temperature in the cell.
Control for controlling output from the fuel cell to the electric motor
Means, and wherein the control means controls the first power
When the temperature in the fuel cell is below a predetermined temperature,
Set a larger value as the temperature inside the cell decreases,
When the temperature is higher than the specified temperature, set it to a constant value and
The second electric power is supplied to the fuel cell at a predetermined temperature.
In the following cases, the temperature increases as the temperature in the cell decreases.
Set to zero, and set to zero when the temperature is higher than the predetermined temperature.
DoIt is characterized by: [0008] [0009] [0010] [0011] [0012] As described above, the hybrid electric vehicle according to the present invention
Since the source-type electric vehicle is configured,
Fuel cell security by any or a combination of
When the temperature is low, the output power is forcibly increased,
Self-heating by the heat generated by the internal resistance of the fuel cell itself,
Soon put the fuel cell in a high efficiency, high output state. When charging the power supply from the fuel cell,
Increases the charge according to a value based on a function that represents the cell temperature
I do. During acceleration, the value is based on a function that represents the cell temperature of the fuel cell.
Accordingly, the discharge amount of the power supply unit is reduced, and the fuel cell
Increase the amount of discharge. Depending on the value based on the function representing the cell temperature of the fuel cell,
Increased power to energize heat dissipation mechanisms such as electric heaters in the cabin
I do. [0013] 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 a fuel cell power supply 10, a power supply 20,
The power control device 50 and the electric motor 60 (for example, a DC motor)
And a heat radiating device 70. Also, this hybrid
Power supply system 100 is powered by electric power.
It is mounted on the vehicle, and when the vehicle is running, the fuel cell power supply
Supply from the device 10 and the power supply device 20 to the electric motor 60
It has a function of controlling the amount of power to be supplied. A fuel cell used as an energy power supply
The pond power device 10 (hereinafter abbreviated as fuel cell) is
So-called fuel cells, lead-acid batteries, and electricity using electrochemical reactions
Power source, etc., or a large-capacity, low-power power supply combining these
This is a battery with characteristics that allows the vehicle to travel at a constant speed or inertia.
Sometimes supply the necessary power. On the other hand, compared to fuel cells,
Power supply device with high capacity and high power supply characteristics
20 (hereinafter abbreviated as power supply) is an electric double layer
Capacitors, nickel-cadmium batteries (hereinafter Nicad)
Etc.), or a battery combining these,
Large when starting, accelerating, or braking the vehicle
Supply electric power to the electric motor 60 when high load electric power is required
Oide that absorbs (charges) electric power during braking
Power supply device capable of charging and discharging power. 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 accelerates and decelerates 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
And a signal v representing the vehicle speed from the
Cell temperature from a cell temperature sensor (not shown) that detects temperature
The power controller 40 is controlled based on the signal Tc representing the degree.
You. 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
When power Pe is supplied by supplying power Pe to the power source,
In both cases, if the cell temperature rises more than necessary,
70 (for example, a heater for a vehicle interior) to output electric power Ph
You. 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.
(A) and FIG. 3 (b) show the accelerator opening a and the motor 6 respectively.
FIG. 6 is a diagram showing a total output Pm of 0 as time t. FIG.
FIG. 7 is a diagram showing the total output Pm of the electric motor 60 by an accelerator opening a.
is there. 3 and 4, the total output Pm of the motor is
It is linked to the accelerator opening a for accelerating both. 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. <Electricity generated by 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. (Control of power supply 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. [Power Supply Control Flow] Next, FIGS.
0, the power control device 50 described with reference to FIGS.
Will be described. 8 to 10 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
Now, the cell temperature T inside the fuel cell 10 described later with reference to FIG.
c is input to the CPU 30 and the signal
Then, the function Fa (Tc) is set by the input signal Tc.
Required for cell activation of fuel cell based on temperature Tc
Set as a parameter to represent the amount and maintain the vehicle speed
Of the running resistance power Pv and the parameter Fa (Tc)
By doing so, the amount of power P to be supplied from the fuel cell 10
e is calculated. In the subsequent step S10,
Step from the power amount Pa required for acceleration calculated in S2
R> The electric power Pe to be supplied calculated in S8 to be supplied to the fuel cell 10 is
If the output from the fuel cell 10 is insufficient,
Power Pp for assisting power supply from power power supply 20
Is calculated. Thereafter, in step S12 shown in FIG.
A cell temperature Tc inside the fuel cell 10 described later with reference to FIG.
Signal Tc is input to the CPU 30, and the CPU 30
The function Fh (Tc) is converted to the cell temperature by the input signal Tc.
A parameter representing output power Ph to heat dissipation device 70 based on Tc.
Set as a meter and dissipate heat as heat
The power amount Ph to be calculated is calculated. Here, the heat radiation device 70
The output power Ph is, for example, the internal cell temperature of the fuel cell 10.
Despite the need to activate at low temperatures,
If power is not required for charging
In this case, the electric power Pe from the fuel cell 10 is transmitted to the heat radiating device 70 (for example,
For example, by releasing heat from the vehicle interior heater)
Active by forcibly outputting power from fuel cell 10
It is electric power to promote the conversion. In addition, the power Ph
However, with the fuel cell activated, for example,
It can be the power required when turning on the heater in the room
Things. In the next step S14, the CPU 30
From step S8 to step S12,
And the calculated power amounts Pe, Pp, and Ph are all added,
The total output power Pm from the power regulator 40 is calculated. next
Proceeding to step S16, steps S8 to S12
In the CPU 30 based on the respective calculated amounts of power.
Controls the power regulator 40, and the output P from the fuel cell 10
e, output Pp from the power supply (if necessary
At a predetermined ratio (considering the output power Ph to the device 70)
And the total output power Pm to the electric motor 60 and the heat dissipation device 70
And output. (At constant speed or inertial running) On the other hand, 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), Step S6
Go to 20. In step S20, charging of power supply 20 is performed.
It is determined whether the charging is completed. In step S20
Determines that the power supply 20 has not been fully charged
If it is determined (NO in step S20),
Proceed to step S22. In step S22,
A signal Tc representing the cell temperature Tc inside the fuel cell 10 described below.
Is input to the CPU 30, and the input
The function Fc (Tc) is based on the signal Tc based on the cell temperature Tc.
Parameter representing the output power Pc required for charging the power supply.
Data and output from fuel cell 10 to power supply
The power amount Pc to be calculated is calculated. Then, step S24
To the acceleration calculated by the CPU 30 in step S2.
The required power Pa and the power calculated in step S22.
And the amount of power Pc required to charge the power
The output power Pe to be supplied from the pond 10 is calculated. Next
In step S26, the output power Pp from the power supply 20
And set the power Pc as
The value of the power Pp is negative), and thereafter, in FIG.
The process proceeds to step S12 described above. In step S20, the power
When it is determined that the charging of the power source 20 is completed (step
When the determination is YES in step S20), the process proceeds to step S28.
No. In step S28, the output power Pe of the fuel cell 10
Only the power Pa required for acceleration is set. That
Later, in step S30, the vehicle is not accelerating.
Therefore, the power Pp to be supplied from the power supply 20 is
Set to zero, and then step S1 described in FIG.
Proceed to 2. FIG. 11 shows the cells of the fuel cell 10 during acceleration.
Parameter F representing the amount of power required to activate the temperature
FIG. 3 is a diagram showing a (Tc) as a cell temperature of the fuel cell 10.
You. FIG. 12 shows the power required for charging the power supply 20.
The parameter Fc (Tc) representing the power is
FIG. FIG. 13 shows the heat dissipation device 7.
A parameter Fh (Tc) representing the amount of power to be supplied to 0
FIG. 2 is a diagram represented by a cell temperature of a fuel cell 10. FIG. 11, FIG.
13, the cell temperature Tc of the fuel cell 10 is set to a predetermined value.
When the fuel cell 10 is activated at the point where Tt is reached
Parameter that represents the amount of power required to activate the fuel cell.
Set the meter to zero. In FIG. 12,
When the cell temperature Tc of the fuel cell 10 reaches a predetermined value Tt,
A parameter representing the amount of power required to charge the power supply 20.
Set only the meter. As described above, the power control of this embodiment
When charging the power supply from the fuel cell,
Charge according to a value based on a function that represents the cell temperature of the fuel cell
Increase the amount and also represent the cell temperature of the fuel cell during acceleration
Reduce the amount of power supply discharge by a function-based value.
Decrease the amount of discharge of the fuel cell,
Depending on the value based on the cell temperature function,
The power supplied to the heat dissipation mechanism such as the heater is controlled to increase.
When the temperature of the fuel cell is low, its output power
Force is increased by the internal resistance of the fuel cell itself.
Self-heated by self-heating, fuel cell can be quickly and efficiently
It can be in the output state. The scope of the present invention does not depart from the gist of the present invention.
The above embodiments are applicable to the modified or changed embodiments.
You. For example, in this embodiment, a lead storage battery is used as the fuel cell.
Using an electric double layer capacitor etc. as the power supply
Was performed, but if they have similar performance,
The invention is not limited to the battery described above. Also heat dissipation
The device converts electrical energy to heat and radiates it to the outside
If it has a mechanism, it is not limited to the heater inside the vehicle,
Needless to say, the device may be installed outside the cabin.
not. [0029] As described above, the hybrid according to the present invention
The power-powered electric vehicle is composed of
Displays the fuel cell temperature when charging the power supply.
The charge amount is increased according to a value based on the function. Or
During acceleration, the value is based on a function that represents the cell temperature of the fuel cell.
Accordingly, the discharge amount of the power supply unit is reduced, and the fuel cell
Increase the amount of discharge. Alternatively, display the cell temperature of the fuel cell.
Of the electric heater in the vehicle
Increase the power supplied to the thermal mechanism. Shown above
Control power supply by any or combination of methods
When the temperature of the fuel cell is low, its output power
Is forced to increase and the fuel cell's own internal resistance
Self-heating with heat to quickly and efficiently output fuel cells
It has the effect of turning into a force state.

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 view showing a parameter Fa (Tc) representing an amount of electric power required to activate a cell temperature of the fuel cell 10 during acceleration, as a cell temperature of the fuel cell 10; FIG. 12 is a diagram showing a parameter Fc (Tc) representing an amount of power required for charging the power supply 20 in terms of a cell temperature of the fuel cell 10; FIG. 13 is a diagram showing a parameter Fh (Tc) representing an amount of power to be supplied to the heat radiating device 70 by a cell temperature of the fuel cell 10; [Description of Signs] 10 ... Fuel cell power supply unit, 20 ... Power supply unit, 30
... CPU, 40 ... Power regulator, 50 ... Power control device, 6
0 ... motor, 70 ... radiator, 42-44 ... pulse modulator, 41 ... pulse generator, 45 ... regeneration signal generator, 10
0: hybrid power supply system, Pe: output power from fuel cell, Pp: output power from power supply, Ph: output power to radiator, Pv: power required to maintain vehicle speed, Pa: required during acceleration Power, Pm: total power output from the power regulator, Tc: fuel cell temperature

────────────────────────────────────────────────── (5) References JP-A-58-23167 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60L 11/18 H02J 7/00 H02J 7 / 34

Claims (1)

(57) [Claim 1] A hybrid power supply type equipped with a hybrid power supply system for controlling a power supply device and a fuel cell
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
And a cell temperature sensor for detecting a temperature in a cell of the fuel cell
And the power supply device is completely charged 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,
First power set based on the temperature in the cell of the fuel cell
To charge the power supply device with the fuel cell.
On the other hand, when the vehicle is accelerating, a signal representing the vehicle speed is generated.
Resistance power set on the basis of the
And the second power set based on the temperature in the cell
A control for controlling output from the fuel cell to the electric motor.
Control means, wherein the control means transmits the first electric power to a cell of the fuel cell.
When the temperature inside the cell is lower than the predetermined temperature,
Set to a larger value as it decreases, and above the predetermined temperature
In the case of, while setting to a constant value, the second power
When the temperature inside the cell of the fuel cell is equal to or lower than a predetermined temperature
Set to a larger value as the temperature inside the cell decreases
When the temperature is equal to or higher than the predetermined temperature, the temperature is set to zero .