JPS6066698A - Controller for automotive charging generator - Google Patents

Abstract

PURPOSE:To prevent the number of terminals of a regulator from increasing by providing a regulating voltage selector for selecting the prescribed regulating voltage in response to the voltage level of a selection signal. CONSTITUTION:When a signal S2 is ''0'' level, transistors 31, 32 are nonconductive, and the voltage of a selection signal O1 becomes V1. At this time, the output of a comparator 221 is ''0'' level, and a generating voltage VB is controlled to a high regulating voltage VR. When the signal S2 becomes ''1'' level, transistors 31, 32 are connected, and the voltage of the signal O1 becomes a voltage V2 higher than the voltage V1. Since the voltage V2 is set to a value higher than the voltage Vc, the output of the comparator 221 becomes ''1'', and the generating voltage VB is controlled to a lower regulating voltage VR.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for keeping the generated voltage of a vehicle charging generator constant.

This type of control device (hereinafter referred to as a regulator) controls the rotor coil current of the generator connected to the engine and rotates, thereby controlling the generated voltage of the generator regardless of the engine rotation speed or increase or decrease in electrical load. It is used to maintain a predetermined regulated voltage, and by using electronics, the entire device is made compact and is usually installed integrally with the generator.

By the way, in recent years, the power generation of Kodenki has increased.

11 depending on the engine load status A5 battery charge status
In response to this, an Iζ regulator has been proposed in which the set voltage of the generator can be selected by an external signal indicating the load state or charging state. Here, if the amount of power generation is to be increased, the set voltage is decreased, and if the amount of power generation is to be decreased, the set voltage is lowered.

In such a regulator, if the number of external signals is increased in order to finely control the power generation m, signal input terminals must be added accordingly, which not only turns the regulator into a puppet but also increases the trouble of wiring. also increases.

The present invention has been developed in view of these problems, and allows the setting voltage to be selected using an external signal! It is an object of the present invention to provide a regulator which has a small number of signal input terminals for a regulator provided in a generator, is therefore compact, and requires less wiring work.

Of course, the regulator of the present invention has a selection signal generation circuit on the vehicle body side that generates selection signals with different voltage levels depending on the input status of a plurality of external signals; A regulating voltage selection circuit for selecting a predetermined regulating voltage based on the voltage and a power generation voltage control circuit for controlling the generated voltage of the vehicle charging generator to match the regulating voltage are integrally installed in the charging generator.

The present invention will be explained below with reference to the illustrated embodiments.

In FIG. 1, 1 is a charging generator, and 2 is a regulator unit provided integrally with the generator, which is comprised of a one-shot-N voltage control circuit 21 and a regulating voltage selection circuit 22.

Reference numeral 3 designates a selection signal generating circuit which is installed at the output interface of a computer mounted on the vehicle body separately from the regulator section 2. Further, 4 is a battery, 5 is a key switch, and 6 is an electric load.

In the power generation voltage control circuit 21, the current 1 is the current flowing through the resistor 211, the voltage VA is the divided voltage of the resistors 211 and 212 connected in series between the power supplies, and the voltage vA is The R lightning voltage V is controlled so as to remain constant at the sum of the Zener voltage and the base-1 transistor forward voltage of the 1-transistor 214. 1 line 15, when the generated voltage vB decreases and the voltage vA becomes lower than the Zener voltage J, the i-transistor 214
- The transistor 215 is turned on and the [J
- The coil 11 is excited and the voltage VB increases to 11. On the other hand, when the generated voltage vB rises and the voltage vA becomes higher than the Zener voltage, the J-transistor 215 becomes non-conductive, the current supply to the rotor coil 11 is stopped, and the voltage VB falls below f. In this way, the electric current Li2V is kept constant, and the generated voltage vB is determined by changing the resistance value of the resistor 211 to R
1, it is controlled to match a constant adjustment voltage vFL shown in the following equation (1).

v, -vA+t -R, -...<1> The adjustment voltage selection circuit 22 is provided with a comparator 221. A constant voltage V is applied to the negative input j terminal of the comparator 221. The selection signal O9 generated from the selection signal generation circuit 3 is input to the positive input terminal. The voltage of signal o1 is voltage V.

If it is lower, the output of the comparator 221 is “0”.
' level, and current flows into the comparator 221 from the connection point between the resistors 211 and 212, and as a result, the current i
increases, and the adjustment voltage vFL becomes higher according to the above equation (1). The voltage of signal 01 is voltage V.

If the voltage is higher than that, the output of the comparator 221 becomes "1" level, the flow of current to the comparator 221 is stopped, and the regulated voltage VFL becomes low.

The selection signal generation circuit 3 receives external signals such as a key switch ON/OFF signal (B@Sl) and a signal SY generated from a computer (not shown). rOJ level or
1” level.

The operation of the regulator having the above configuration will be explained below.
Ru. 4n if key switch 5 is not turned on
@31 is at the rOJ level, so the voltage of the selection signal 01 becomes OV (X area in Fig. 2).
1- transistors 222a, 2221 + J,
The 1-radiator 215 of the voltage control circuit 1f21 becomes non-conductive, and no excitation current is supplied to the rotor coil 11.

When the key switch 5 is turned on and the signal 82 is at the rOJ level, the 1-transistors 31 and 32 are non-conductive, and therefore the 1G voltage of the selection signal @01 varies.
The voltage V obtained by dividing the voltage by 11 (min/, iE)
1. Howl (X area in Figure 2). At this time, the transistors 222a and 222b hX become conductive, and the transistor 215 of the electric IJ control circuit 21 becomes conductive. When the engine starts and the rotation of the generator begins to increase, power generation begins. And the voltage v1 is the voltage V. (Since S9 is constant, the output of the comparator 221 is at the "0" level, and as described above, the generated voltage VB is controlled to the high adjustment voltage vFL.

On the other hand, when the negative engine speed rapidly increases during sudden acceleration of the vehicle, the signal S2 goes to the "1" level. In this case, transistors 1 to 31 and 32 are conductive, and resistor 35 is connected in parallel to resistor 33. As a result, the voltage of the selection signal 01 becomes the higher voltage v2. The voltage V2 is set higher than the voltage Vc, so the output of the comparator 221 is at the "1" level, and as described above, the generated voltage Va is now controlled to a lower regulated LT:VFL. As a result, the power generation m of the power generation 1I11 connected to the engine decreases,
The load on the engine is reduced and smooth acceleration becomes possible.

As described above, the regulator of the present invention is provided with a selection signal generation circuit on the vehicle body side that emits selection signals with different voltage levels, and on the other hand, the regulator part integrated with the generator is provided with the selection signal generation circuit that emits selection signals with different voltage levels. ．． A regulating voltage selection circuit is provided to select a predetermined regulating voltage according to the voltage level of No. This prevents the increase in size, makes it more compact, and reduces the hassle of wiring.

Furthermore, in this embodiment, power generation is stopped via the selection signal when the key switch is turned off, so the conventional regulator J2 also has one fewer terminals and is more compact.

'JJ) The adjustment voltage selection circuit 22 may also be configured as 4 as shown in FIG. However, in FIG. 1 (instead of comparator 221),
, Zener diode 225 and first resistor 226 are installed (
], 1 to the sum of the base-emitter forward voltage of the transistor 224 and the Zener voltage of the Zener diode 225 as the voltage V. That's it.

As a result, the selection signal 0. The voltage is voltage V. When Jζ is lower, the transistor 224 is in a non-conducting state, the transistor 223 is in a conducting state, etc.), and the regulated voltage vK becomes high as in the above embodiment. On the contrary, choose III! (Old name OI
The voltage is voltage V. Higher, 1-transistor 22
4 is in a conductive state and 1-transistor 223 is in a non-conductive state, so that the adjustment voltage λ becomes low.

As described above, the vehicle charging generator control system d of the present invention can appropriately control the generated Nm of the generator, and in combinations 1 to 1,
It also requires less wiring.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of the control device, FIG. 2 is a diagram showing the voltage level of a selection signal, and FIG. 3 is a circuit diagram showing another embodiment of the adjustable JL selection circuit. 1... Generator 2... Regulator section 21... Generation voltage control circuit 22... Adjustment voltage selection circuit 3... ......) U selection signal generation circuit 4...
...Battery 5...Key switch 6...Electrical charge

Claims (2)

[Claims] (1) A selection signal generation circuit is provided on the vehicle body that generates selection signals with different voltage levels depending on the input status of multiple external signals, and a predetermined adjustment voltage is selected depending on the voltage level of the selection signal. A control for a vehicle charging generator, characterized in that the charging generator is integrally provided with a regulating voltage selection circuit for controlling the voltage, and a generating voltage control circuit for controlling the power generation mill of the vehicle charging generator to match the regulating voltage. Device. (2) A vehicle charging generator according to claim 1, wherein the adjustment voltage selection circuit is set to stop power generation of the charging generator when the voltage level of the selection signal is at ground potential. Control device.