JP2576072B2 - Control device for vehicle charging generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging generator for a vehicle.
Control device for vehicle charging generator that controls generated voltage to predetermined voltage
It is related to the location. [0002] 2. Description of the Related Art A vehicle charging generator is connected to an engine.
And the rotation speed varies over a wide range.
For controlling the pressure to a predetermined value (hereinafter referred to as a regulator)
Is provided. This type of regulator is usually a charging generator
Generator intermittently by turning on and off the field winding current
The generated voltage is controlled by applying electricity.
When the load on the generator increases, the generated voltage is kept constant.
To increase the power generation time. [0003] By the way, in recent years, vehicles
Electrical components are increasing rapidly, and as a result, charging generators
Has also become larger. And large-capacity charging generators generate electricity
Sometimes a heavy engine burden impairs vehicle acceleration performance
ing. Forcibly shorten generator time for acceleration
However, the use of electrical components may be day or night or
It fluctuates depending on the season and uses a lot of electrical components
Excessive discharge of the battery when the so-called generator load is large
This causes flickering of electricity and lamps. [0004]Also, the output torque of the engine is generally low.
Because the rotation state is lower than the high rotation state,
At the time of acceleration, the deterioration of acceleration performance by the charging generator is remarkable
There was a problem that appeared.Therefore, the present invention
Vehicle acceleration and electrical load on charging generator
Of the charging generator according to the
By suppressing electricity,Adversely affect the load
A regulator that can improve acceleration
The purpose is to provide. [0005] SUMMARY OF THE INVENTION A vehicle charging generator according to the present invention.
Control device forVehicle charging generator with three-phase armature winding
Switching means for intermittently supplying power to the field winding of (2)
(41) and the switch according to the output voltage of the charging generator.
Turning on and off the switching means,
Conductivity control means (42, 43, 4) for controlling the conductivity of the stage
4, 51, 52) and the electrical
Load detection means for detecting that the load is in a low load state
(6) and vehicle acceleration state detection for detecting the acceleration state of the vehicle
Means (7), when the engine speed of the vehicle is low
Engine speed detecting means (8) for detecting that
Before the setting signal that changes the conductivity of the switching means
Setting means for outputting to the conductivity control means, (A) The vehicle running state is an acceleration state and the load is a low load state
And the engine speed is low.
If (B) The vehicle traveling state is an acceleration state and the load is a low load state
And the engine speed is in the non-low speed state, (C) The vehicle is in an acceleration state and the load is in a non-low load state
And the engine speed is low,
and (D) The vehicle is in an acceleration state and the load is in a non-low load state
The engine is running and the engine speed is not low
Of the three cases,
Setting to output a setting signal to reduce power transmission and suppress power generation
Means (51, 52, 54, 55, 57, 59, 61)
A control device for a vehicle charging generator, comprising:
Adopt the technical means of The symbols in parentheses will be described later.
Refer to the configuration of the embodiment added to show the correspondence with the
It is a reference sign. [0006] [Action]According to the configuration of the present invention described above, the conductivity control means
Switching hand according to the output voltage of the charging generator
The conductivity of the stage is controlled, the power supply to the field winding is adjusted,
The amount of power generated by the generator, that is, the output voltage is controlled. This guide
The conductivity control means receives a setting signal from the setting means.
The conductivity control means switches according to this setting signal.
Change the conductivity of the generator and change the amount of power generated by the generator.
Let Therefore, the conductivity is reduced by changing the setting signal.
Thereby, the power generation of the generator can be suppressed. Further
According to the configuration of the present invention, the vehicle is in an accelerated state.
The electrical load on the charging generator is low.
And that the engine speed is low
It is detected by each detecting means. And these
The setting means outputs a setting signal in response to the detecting means.
In particular, in the configuration of the present invention, the setting means includes:
Is in an accelerating state, the load is in a low load state, and
When the gin rotation speed is low, (b) the vehicle running state
Condition is accelerating, the load is low, and
When the engine speed is in the non-low rotation state, (c) the vehicle running state
State is accelerating, the load is non-low, and
When the engine speed is low, and (d) the vehicle
The running state is an acceleration state and the load is a non-low load state.
Moreover, when the engine speed is in the non-low speed state,
In the case of (a), the conductivity is reduced more than the remaining three cases
And output a setting signal for suppressing power generation. Because of this, the car
Both are accelerating and the load is low
Therefore, even if power generation is suppressed, the adverse effect on the electrical load is small.
It is expected that there will be no, and even better acceleration
(A) in a low rotation state where it is difficult to obtain
In the case of (1), power generation is higher than in the other cases (b), (c) and (d)
This prevents the battery from being over-discharged, etc.
Improve acceleration in low speed conditions while stopping
Can be. [0007] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Will be described. In the figure, 1 is a battery, 2 is a charging generator, 3 is
Symbolizes various electrical componentsElectricityLoad, 4 is voltage control
Circuit, 5 is a set voltage generating circuit, 6 is a load detecting means.
The duty ratio detecting circuit 7 has a rotational speed change function as a vehicle acceleration state detecting means.
Reference numeral 8 denotes a rotation amount detection circuit. Regular
The circuit is composed of the circuits 4, 5, 6, 7, and 8 described above. The charging generator 2 has a three-phase armature winding 21 and a field
A winding 22 and a three-phase full-wave rectifier 23;
Is excited, an electromotive force is generated in the armature winding 21 and power is generated.
Is performed. That is, a diagram in which the field winding 22 is wound
The rotor that is not connected to the engine rotates
An alternating current having a frequency proportional to the engine speed is
A voltage is generated. This AC voltage is rectified to DC by rectifier 23
Then, it is applied to the battery 1 and the load 3. [0009] The voltage control circuit 4 is a switching means.
Lanista 41And constitutes the conductivity control means.
ToComparator 42, resistor 43And resistanceComposed of 44
The setting voltage 5a of the setting voltage generating circuit 5 and the resistances 43 and 4
Appear between fourOutput voltageGenerator generated voltage feed
By comparing the back voltages, the transistor 41 is turned ON-OF.
The generator 2 is intermittently generated by the F control,
The average generated voltage is kept at the set voltage 5a.Ie voltage
The control circuit 4 controls the conductivity according to the output voltage of the generator.
And further according to a setting voltage 5a as a setting signal.
It is configured to change the conductivity. [0010]As load detection means for detecting electrical load
OfThe terminal c of the conductivity detection circuit 6 is connected to the transistor
Connected to the collector
The conduction state of the transistor 41 is detected. And
The average conductivity of the transistor 41 is calculated, and the conductivity is determined to be a predetermined value.
From terminal a when the value is below the lower limitIndicates low load condition
A "1" level output is issued and the conductivity is higher than a predetermined upper limit.
In this case, a "1" level output is output from the terminal b. [0011]Acceleration state detection hand that detects the acceleration state of the vehicle
As a stepThe terminal f of the rotation speed change amount detection circuit 7 is an armature winding.
Connected to one of the lines 21 and the generator speed or engine
Input a pulsed voltage with a frequency proportional to the rotation speed.
In the change amount detection circuit 7, the change amount of the frequency, that is,
Calculate the amount of change in gin rotation speed, and the amount of change
Then from terminal eIndicates acceleration state"1" level output
From the terminal d if the amount of change is equal to or greater than the negative constant value.
Emit a "1" level output. [0012]Engine speed detection meansSpeed detection
Similarly, the output circuit 8 has the above-mentioned pallet proportional to the engine speed.
Voltage is input, and the detection circuit 8
When the rotation speed is less than the specified valueIndicates low rotation status
YouEmit a "1" level output. The above specified value is the normal value of the vehicle.
Keep it slightly lower than the engine speed during driving. Setting hand
The setting voltage generation circuit 5 as a stage includes resistors 51, 52, 5
3, 54, delay circuit 55, AND gates 56, 57,
It comprises inverters 58 and 59 and diodes 60 and 61.
The resistors 51 and 52 are connected in series between the power supply Vcc and ground.
As a result, the voltage at the connection point becomes the set voltage 5a of the generation circuit 5.
The output voltage of AND gate 56 and inverter 59 is
The voltage becomes Vcc at "1" level and 0 V at "0" level.
Becomes Therefore, the output of the AND gate 56 is "0".
Level and the output of the inverter 59 is "1" level
Both the diodes 60 and 61 become non-conductive, and
The constant voltage 5a is obtained by dividing the power supply Vcc by resistors 51 and 52.
Pressure (As the first setting signal(First set voltage).
When the output of the inverter 59 becomes "0" level, the resistance 5
4 is grounded and the AND gate
The output of the port 56 also becomes the “0” level, and the resistance
54 are connected in parallel and the set voltage 5a decreases.
Descend (As the second setting signalSecond set voltage). A
When the output of the ND gate 56 becomes “1” level, the resistance 5
3 is connected to the voltage Vcc,
The output of the inverter 59 becomes the “1” level, and the resistance 5
1 and the resistance 53 is connected in parallel to the set voltage.
5a rises (third set voltage). The input of the delay circuit 55 from the "1" level
Even if it becomes "0" level, "1" level output is output for a certain time.
Emit. Regulator with the above configuration
The operation will be described below. When the vehicle is traveling at a constant speed,
Since the gin rotation speed hardly changes,
The outputs of the terminals d and e of the output circuit 7 are both "0" level.
Therefore, the output of the AND gate 56 becomes "0" level.
The output of the AND gate 57 is at the “0” level,
The output of the data 59 becomes "1" level and the set voltage 5a becomes
First set voltage obtained by dividing voltage Vcc by resistors 51 and 52
(For example, 14.5 V). And generator 2 is generated
Transistor so that the voltage maintains the first set voltage.
The generator 41 controls the power generation interval. If sudden acceleration is performed at the time of starting, the engine speed
Rises rapidly and the output of the terminal e of the rotation speed change amount detection circuit 7 is output.
The power becomes "1" level. This is not normal driving
In this state, the output of the rotation speed detection circuit 8 is at "1" level.
You. At this time, the load on the generator 2 is small and the transistor 4
1, the terminal a of the conductivity detection circuit 6
Becomes "1" level, and as a result, the AND gate
The output of the inverter 57 becomes “1” level and the output of the inverter 59 is output.
The force becomes the “0” level. At this time, the output of the terminals b and d is
"0" level and the output of AND gate 56 is "0"
Level. As a result, the set voltage 5a becomes the first set voltage.
The second set voltage (for example, 12 V) lower than the voltage. This
The second set voltage near the rated voltage of the battery 1.
In this case, the generator 2 generates almost no power,
No acceleration and smooth acceleration is performed. Also,
Since the load on the generator 2 is small, the generator is stopped during acceleration.
There is no adverse effect. During this acceleration, the load on the generator 2 becomes large.
The output of the terminal a of the conductivity detection circuit 6 is "0".
And the outputs of the AND gates 56 and 57 become “0” level.
Bell, the output of the inverter 59 becomes "1" level,
The first set voltage is maintained. Engine during deceleration
The rotation speed decreases rapidly, and the terminal of the rotation speed change amount detection circuit 7
The output of d becomes “1” level. At this time, the load of the generator 2
Is large and the average conductivity of the transistor 41 is large,
The output of the terminal b of the conductivity detection circuit 6 becomes "1" level.
And the output of the AND gate 56 becomes the “1” level.
The constant voltage 5a is higher than the third set voltage.
Pressure (for example, 15 V). As a result, the generator 2
Electricity time becomes longer and braking force against the engine increases.
On the other hand, the battery 1 can be efficiently charged under a large load.
Be done. During this deceleration, the load on the generator 2 is small.
The output of the terminal b of the conductivity detection circuit 6 is "0" level.
And the outputs of the AND gates 56 and 57 become “0” level.
Bell, the output of the inverter 59 becomes "1" level,
The first set voltage is maintained. Above acceleration and deceleration
Is completed and the engine speed becomes constant.
Becomes the first set voltage again. When the engine brake is applied to normal driving,
Although the engine speed sometimes rises, the speed detection circuit 8
Output is not at "1" level and the actual acceleration state
Is distinguished. Also, during acceleration, a gear change
Although the engine speed drops occasionally, the delay circuit 55
The set voltage 5a during acceleration is maintained, and acceleration is impaired.
It will not be. In the above embodiment, the power generation during acceleration
Only charge the battery during stop or deceleration
Can also. If the engine brake is good enough,
The number detection circuit 8 is unnecessary, and the acceleration performance is greatly reduced.
It is not necessary to provide the delay circuit 55
Absent. [0019] As described above, the charging generator control device according to the present invention is provided.
PlaceThe state of acceleration of the vehicle, the state of electrical load on the generator,
Detect the engine speed andAppropriate control of generator status
Acceleration without affecting the load
Performance can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of a control device for a vehicle charging / generator of the present invention. [Description of Signs] 1 Battery 2 Charging generator 3 Electric load 4 Voltage control circuit 5 Setting voltage generating circuit 6 Conductivity detecting circuit as load detecting means 7 Rotational speed change detecting circuit as vehicle acceleration state detecting means 8 Rotating speed detecting circuit 21 Three-phase armature winding 22 Field winding 41 Transistor as switching means

Claims (1)

( 1) A vehicle charging generator (2) having a three-phase armature winding
Switching means for interrupting power supply to the field winding (41)
The switching means according to the output voltage of the charging generator.
Turn the stage on and off and reduce the conductivity of the switching means.
Conductivity controlling means (42, 43, 44, 51, 5)
2) when the electrical load on the charging generator is in a low load state;
Load detecting means (6) for detecting that the vehicle is running, and vehicle acceleration state detecting means (7) for detecting the acceleration state of the vehicle.
Detects that the vehicle's engine speed is low.
And a setting signal for changing the conductivity of the switching means.
A setting means for outputting to the conducting ratio controlling means, (a) the vehicle traveling state is the acceleration state load low load conditions
And the engine speed is low.
If, (b) the vehicle traveling state is the acceleration state load low load conditions
And when the engine speed is in the non-low rotation state, (c) the vehicle is in the acceleration state and the load is in the non-low load state.
And the engine speed is low,
And (d) the vehicle is in an acceleration state and the load is in a non-low load state.
The engine is running and the engine speed is not low
Among them, in the case of the above (a), the conductivity is lower than that of the remaining three cases.
Setting means (5) for outputting a setting signal for suppressing power generation
1, 52, 54, 55, 57, 59, 61) . A control device for a vehicle charging generator.