JPS58163237A - Controller for charging generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charging generator control device, and in particular, a charging generator that detects and displays abnormal conditions without impairing the characteristics of conventional devices by being equipped with opening/closing mounting and a diagnostic device. 1
This relates to machine control devices.

First, a conventional device will be explained as shown in FIG.

In the figure, Cs m is a three-phase alternating current generator installed in a vehicle (not shown) and driven by a transmission (not shown), which includes an armature coil (101) and a field coil (
102) and C. 12) is a full-wave rectifier that performs full-wave rectification of the AC output of the generator 11), (201) (20
2) C20B) are respectively 1st. The second rectified output terminal and the ground terminal (3) control the field current flowing to the L field coil (102), thereby outputting Ck, the field generator +1)! This voltage regulating device controls the pressure to the first 'FrFr constant value, and is composed of the following parts.

That is, (801) is a surge absorbing 9゛ diode connected to the four ends of the field coil (102), (802) (8)
08) cuts off and on the current flowing through the field coil (102). Gourington connected power transistors,
(804) is a resistor that constitutes the base circuit of the transistors (802) and (80B), (805) is a control transistor that controls on/off of the transistors (8 (12) and (808)), and (SOS) is the t memory. K141t1) second
Zener diodes (8o7) (gos) +, which detect the voltage at the rectified output terminal (202) of C1 and turn on when the output voltage reaches a first predetermined value, are connected in instantaneous series to each other, and the voltage The resistor (809) constituting the voltage divider circuit is connected in parallel with the charging indicator light (6), so that if the indicator light (6) is disconnected, the initial excitation current can be supplied to the generator (1). This is the initial excitation resistance. (4) is the storage battery, and (5) is the key switch.

Next, the operation of conventional mounting configured as above will be explained. First, when the key switch (5) is closed when starting the engine, the energy is transferred from the storage battery (4) to the key switch (5).
C1 transistor C802) C80 through resistor (804)
B) is supplied with a base current, and the transistor (802)
(808) is conductive. The transistor (802) (8
08) conducts, the key switch (6) is charged from the IT battery (4). F indicator light (6) and resistor (809), field coil (102), transistor (802) (80B
), a field current flows through ゛c1 field sulfur coil Jl/ (102), and a field magnetomotive force is generated.

When the engine is started in this state and the generator (1) is driven, an outflow output is generated in the C armature coil (101) according to the rotation speed, and this output is transmitted to the aftereffect rectifier fi (2). ) is full-wave rectified by °C. Here, the rectified output is rectified by the first (
7) Where w value or less m R1 resistance (807) (808)
Since the voltage dividing point potential of the voltage dividing circuit formed by 1R is also low, the Zener diode (806) does not become conductive and maintains the non-conducting state, and the supply of field current is maintained.
As a result, the output voltage of the generator (1) increases by 1°C as the rotational speed increases. After that, leave!
If the rotation speed of $1'1 (1) further increases and the output voltage of 'C1 exceeds the first predetermined value, the potential of the voltage dividing point of the voltage dividing circuit also increases, and the Zener diode (806) The transistor (805) becomes conductive, and the transistor (805) becomes conductive through the Zener diode (SOS).
When transistors (802) and (808
) is cut off, the current flowing through the field coil (102) is cut off, and the output voltage of the generator (1) decreases.

When this output voltage drops to the first predetermined value, the Zener diode (806) and the transistor (805) become non-conductive again, and the transistors (802) (808) i
, t conduction'C The field coil (102) is energized and the voltage of the generator (1) rises again.

By repeating the above-mentioned operation, the cutting voltage of the generator (l) is controlled to the first predetermined value, and the storage battery (number) C1 is charged to this controlled overturning pressure. Also, at this time, the output voltage outside the second rectified output (202) is also almost the same as that of the first rectified output.
Since it reaches a predetermined value and there is almost no potential difference with the storage battery (4), the charging indicator light (6) turns off and displays the charging state of the storage battery (4).

However, in the conventional device described above, if a part of the supply circuit is disconnected, the charging indicator light (6) does not light up even if the generator (1) is in a non-generating state. For this reason, there are drawbacks such as not being able to determine the non-charging state, leading to a dead battery, or not being able to determine if the first rectified output end (201) has come off or if there is uncontrolled lateral deafness.

The present invention proposes an excellent charging generator control device that eliminates the above drawbacks.

An embodiment of the present invention shown in FIG. 2 will be explained below.

In FIG. 2, 'C1 (7) is an opening/closing cover, which is composed of the following parts. That is, (701) is conductive when the generator (]) is turned on (tF), and the field coil (102)
Initial rffh 4B11: a't a t +ff
Column ffflJ II h Run 9x Ri, (702)
Backflow blocking diode during rat power generation (708)
is the resistance that sets the base current flowing to the L transistor (701), and (704) is the transistor (704) due to noise.
701) is a resistor for preventing 4 currents, and (706) is a resistor for extending conduction i of the transistor (701) -r':/ +
, (70g) C: When the charging indicator light (6) is turned on, - a diode for the base of the transistor (701), (707) is a resistance corresponding to the initial excitation resistance in the conventional blowout prevention shown in FIG. (708) indicates the initial magnetic resistance (
707) is a diode that prevents current from passing through.

(8) is a diagnostic device that detects by setting a second predetermined value that is less than the first predetermined value when no power is being generated, and sets a predetermined value of F8 between the first predetermined value and 11 when there is no control. Detects C and turns on the indicator light (6) for each °C. Further, at the time of rising, a fourth predetermined value that is less than the second predetermined value is set so that the °C diagnostic device cancels the no-power generation detection function and prevents the rising characteristic from decreasing by 1. The parts configuration is as follows.

In other words, (801) and (802) are V-Lington connected transistors that are connected between the charging indicator light (6) and ground and are switching elements, (80g) is a 1-pull absorption capacitor, and (804) is B The zener diodes (806) and (806) are connected to each other in an OR (logical sum), and the zener diodes (807> and 807> are diode (8
05) via Ct.
) resistor connected to the pace circuit of (808) hafi
! -2 rectified output end (202)! When the voltage is below the second predetermined value that specifies no power generation, the C transistor (801) (801) is turned off through the resistor (80?) and diode (806).
02) Apply pace current to the transistor and make it conductive.
(809) is a zener diode connected in series with the base terminal of the transistor (SOS), and is conductive when the second rectified output end (202) tr pressure is equal to or higher than a second predetermined value.
10) (811) Resistors connected in series to each other and forming a voltage divider circuit for the #2 rectifier (202) voltage, (
812) and (818) are connected in series with each other to form a voltage dividing circuit for the second rectified output terminal (202) w pressure, and the second rectified output terminal (202)
When the voltage at the rectifier terminal (202) is equal to or higher than the eighth predetermined value, the resistor (814) is the resistor that causes the base current to flow to the transistors (801) and (802) through the diode (806) and the Zener diode (804). 2 rectified output @
(202) [When the voltage is below the fourth predetermined value that defines the V rise, the 8-point voltage is set to below the predetermined value of 4, and the transistor 9
This is a diode that turns off (801) and (802).

The operation of an embodiment of the apparatus of the present invention configured as described below will be explained.

First, when the key switch (5) is closed to start the engine, the transistor (701) passes through the resistor (708).
Current is supplied to the C base and it becomes conductive. As a result, from the storage battery (4), the key switch (5), charging indicator light (6), diode (708), initial excitation resistance (707), transistor (701), diode (702), field:
) Ia1/ (102), transistor (802) (8
A 7i dynamic magnetic current flows through the field coil (12) through the field coil (12), generating a field magnetomotive force and at the same time discharging the charging indicator light (6). 2 rectified output end (20
2) Since the voltage is below the fourth predetermined value that defines the rise, the voltage at point C1B becomes below the fourth predetermined value through the diode (814), and the transistors (801) and (802) are turned off.

As a result, the current flowing through the charging indicator light (6) flows through the transistors (801) and (802), thereby preventing the rising characteristics from deteriorating.

Next, when the engine starts and the generator (generates electricity) and the voltage regulator (3) starts to control it to the first predetermined value, the voltage of the storage battery (4) and the second rectifier (202 ) Since there is almost no difference between the two voltages, the charging indicator light (6) goes out.

At this time, the diode (,702) is connected to the second output terminal (2).
02), the power supply to the storage battery (4) is blocked.

In this state, the field coil (102
), transistor* (80L) (808), or wiring causes an open failure, the pressure at the second rectified output end (202) becomes lower than the second predetermined value, and the Zener diode (809)
) i:t :t 7. This station, transistor (8
08) The pressure at point B is approximately 4, and the resistance (807
), the second!1 outflow power terminal (202), and the resistance between the ground terminal. By adjusting the resistor (80?), the 8-point voltage is set to be greater than or equal to the fourth predetermined value and less than or equal to the second predetermined value.

With the above settings, transistors (801) (802)
A base current flows through the resistor (807), diode (805), and Zener diode (804), conducts, and lights up the charging indicator light (6). At the same time, the diode (706) lowers the base voltage of the transistor (701) to prevent the transistor (701) from conducting.

When there is no firing '#IL, the operation of making the transistors (801) and (802) conductive and the operation of making the transistor l (701) conductive start at the same time, but the capacitor (705)
The operation of the transistor (701) is delayed by C,
This prevents conduction from occurring.

Next, due to a failure of the rectangular pressure 1 device LI (3), etc., the generator +1
The output voltage of J cannot be controlled to the first predetermined value (in, and no control is specified).
In this case, the voltage dividing point voltage of the voltage dividing circuit formed by H4 by the resistors (812) and (818) increases. As a result, the C
The base voltage flows to the transistors (801) and (802), making them conductive and lighting up the charging indicator light (6).

Also, if the 1st* outflow end is disconnected or other reasons, the 1st*a battery (4) is not charged even though it is generating electricity. A voltage waveform shown in FIG. 8 is output to the second rectified output terminals (201) and (202). At this time, as shown in FIG. 8, there is a period in which the value is equal to or greater than the eighth predetermined value.

During this period, transistor 9 (801) (802) is intermittently supplied with base current C through resistor (812), diode (806), and zener diode (804). However, due to the action of the capacitor (808), the transistors (301) and (802) become conductive at that time, and the charging indicator light (6) lights up.In addition, in Fig. 2, the C1 diagnostic device (8) uses a comparator. A similar 9J1 result can be obtained with 'C' constructed by the circuit shown in FIG.

As mentioned above, in the pupil of one embodiment of the present invention, C is
Detects abnormalities such as no power generation, no control, carving lIMrN, and Tajiki end (201) disconnection that could not be detected in the control system.
Turn on the indicator light <6) (-). In other words, if there is no power generation due to the excitation circuit IRR line, etc., the switchgear (7)
is turned off and the voltage of the second rectified output end (202) is set to a fourth predetermined value or more and a second predetermined value or less. In addition, when m1111i' outflow output end (201) is off, C detection is performed using the fact that the eighth predetermined value is exceeded for a certain period of time.
There is 7C. As a result, the first rectified output end (2
01) Prevents battery from dying when disconnected + h t
,,During the pre-control, it is effective in preventing overcharging of the # battery (4) and destruction and failure of the electrical load.

Furthermore, by providing the fourth predetermined value, the decrease in the photoelectric indicator current portion of the initial IKlFI@magnetic current is suppressed, thereby preventing the rise characteristics from deteriorating.

As shown in Fig. 2, the function described in F can be implemented with a simple circuit configuration, so it can be made into a small and inexpensive device.As described above, in this invention, the charging generator output 9rFE A voltage regulator that controls the voltage to a first predetermined value, and a voltage regulator connected to the 'C@ column through a key switch between the AT battery and the second rectified output voltage. The decay indicator light, the transistor, and the non-power generation of the charging generator are detected by setting the second predetermined value below the first predetermined value. 1 Fr constant (set a predetermined value of $8 for Ia and above,
Since we have installed a diagnostic device that detects C and turns on the C charging indicator based on each detection result in L, it is possible to prevent the charging generator from generating no power or output, which conventionally could not detect gastric odor. Since it is possible to detect abnormalities such as uncontrolled voltage or disconnection of the first rectified output end and turn on the charging indicator light, it has the effect of reliably preventing overcharging of the storage battery and destruction and malfunction of the electrical load. .

[Brief explanation of drawings]

Fig. 1 is an electric circuit diagram showing a conventional device, Fig. 2 is an electric circuit diagram showing an embodiment of the present invention, and Fig. 8 shows a disconnection of the first rectified output end (201) when the charging generator generates electricity. 1st time.
It is a characteristic line diagram showing the output voltage waveform of the second rectified output terminal (201) (202). In the figure, 11) is the alternating current generator, (101) is the 11' armature coil, (102) is the field coil, (2) is the full-wave rectifier, (201) is the first rectified output end, (202) is the second rectifier output end, (20B) is the ground terminal, (3) is the voltage regulator, (4) is the storage battery, (5) is the key switch, (6) is the charging indicator, (7) is the switchgear, (701) is a transistor, (706), (805), (806), and (814) are diodes, (8) is a diagnostic device, and (801 (802) is a Turlington connection transistor. The same reference numerals are used throughout the country. indicates the same or equivalent part.

Claims (1)

[Claims] n) rectifying the AC output induced in the armature coil of the charging generator; a rectifier having a second rectifier output end and a ground terminal; a storage battery charged by the output of the first rectifier output end of the rectifier; and the charging generator excited by the output of the second rectifier output end of the rectifier. 1[-] field coil, ζ for intermittent current flow to the field coil, and a voltage for controlling the output voltage of the generator to a first predetermined value [11 device] , a charging indicator light and a transistor connected in series via a key switch between the storage battery and the second rectified output terminal t; The second predetermined value is set and detected, and an eighth predetermined value greater than the first predetermined value is set and detected for the uncontrolled output and the above f#l rectified output end deviation, and the charging indicator light is turned on. Charging generator control device with diagnostic device to turn on the light. +2, in the thing described in claim 1, C, the anode terminal is connected to the base terminal of the transistor, and the cathode terminal is connected to the collector terminal of the V-Lington connected transistor of the diagnostic device, and has a guiode C. A charging generator control device characterized by C. (3) In the product described in clause 1 or 2 of the patent claim, the cathode terminal is connected to the second rectified output end of the C1 rectifier, and the abnormal state detected separately in C1 in the diagnostic device is connected to the C1 rectifier. A charging generator control characterized in that the anode terminals are connected to the connection points of the guiodes connected in an OR (logical sum) to transmit information to the guiodes connected to the guillington to drive the charging indicator light, and the guiodes are C and the guiode is °C. Device.