JPS6237401Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a voltage regulator for a magnetic AC generator that is directly connected to an internal combustion engine or the like and operates at variable speed.

It is generally known that in a vehicle power generation device, there is a method in which a lamp is lit with AC output and a battery is charged with the half-wave rectified output. To explain with reference to FIG. 1, in the conventional configuration, in order to improve the charging characteristics of the battery 3, the entire output tap A of the armature coil 1 of the generator is connected to the battery 3 via a half-wave rectifier 4. Intermediate output tap S
A voltage regulator 5 for controlling the lamp load 2 and the AC output supplied to the lamp load 2 is connected via a switch 6 to the lamp load 2 . In this conventional configuration, the negative half-cycle lamp voltage that is not used for battery charging is detected, and when that voltage exceeds a certain specified value, short-circuit control is performed to keep the output voltage constant, and the electrical By utilizing the secondary reaction, the output of the positive half cycle used for charging the battery 3 is kept small, so that suitable battery charging characteristics can be obtained.

However, in the conventional configuration described above, the voltage regulator that controls the lamp voltage detects only the lamp terminal voltage during the negative half cycle, and the lamp is The load 2 has a phase control circuit having a large integral constant depending on the power generation output. Therefore, during the daytime when the lamp load 2 is not connected, the voltage waveform detected by the voltage regulator becomes a no-load voltage waveform, and the voltage regulator, which operates by detecting the lamp terminal voltage, does not operate to appropriately control the charging output. However, since the power generation output is large, the battery 3 has the disadvantage of being overcharged. In order to overcome this drawback, it would be ideal to perform night lamp voltage control and battery voltage control at the same time, or to control the voltage control method by switching between night and daytime voltage control methods, but this would complicate the circuitry, etc. However, it has the disadvantage of being disadvantageous in terms of cost.

The object of the present invention has been made in view of the above points, and is to improve charging characteristics by controlling the lamp voltage when a lamp load is connected, and suitably controlling the charging output when there is no lamp load.

In order to achieve the above object, the present invention is to suitably control the charging output with an extremely simple configuration. be able to control the output of

During the daytime, the detected voltage waveform of the voltage regulator becomes a no-load waveform. Taking advantage of these two points, a rectifier with control pole (hereinafter simply referred to as SCR) for short circuit control is used.
A Zener diode is arranged in parallel for the gate signal supply source separately from the lamp voltage control circuit, and the Zener voltage of the Zener diode is controlled so that the gate signal is not supplied through the Zener diode during the night, and through the Zener diode during the daytime. By configuring the configuration so that the gate signal is supplied to a value that provides suitable battery charging performance, during the daytime when the lamp load is not connected, the negative voltage waveform is applied between the voltage regulators. In the half cycle of
Since the gate signal is supplied to the SCR through the Zener diode earlier than the lamp voltage control circuit which has a large integral constant, the SCR conducts and controls the negative half cycle to short-circuit, and due to the armature reaction due to the short-circuit current, The purpose of this is to operate the charging output so that suitable charging performance can be obtained and to prevent overcharging.

The present invention will be explained below based on embodiments shown in the drawings. In the figure, reference numeral 1 denotes an armature coil of a magnetic alternator, the full output tap A is connected to the positive side of the battery 3 via a half-wave rectifier 4, and the output tap B is connected to the negative side terminal of the battery 3. 2
is a lamp load as an AC load, which is connected to the intermediate output tap S of the armature coil via a switch 6. 5 is a voltage regulator, and transistor 5
3. Resistors 56, 57, Zener diode 58,
A phase control capacitor 59, a reverse current blocking diode 52, an SCR 51, a no-load detection Zener diode 50, and a resistor 54 forming a gate circuit.
It is composed of a capacitor 55. Further, the resistor 57 and the capacitor 59 constitute a delay circuit. The no-load detection Zener diode 50 is connected in parallel between the collector and emitter of the transistor 53 so that the anode of the Zener diode 50 and the collector of the transistor 53 are common. Also, when the switch 6 is closed and the lamp load 2 is turned on at night, the output of the armature coil 1 flows to the lamp load 2 side, so the output applied to the anode side of the diode 52 is reduced, and the Zener diode 50 is turned on. On the other hand, when the lamp load 2 is not connected in the daytime, the output applied to the anode side of the diode 52 increases, and the Zener diode 50 becomes conductive.

Next, the operation of the above configuration will be explained.
At night when the switch 6 is turned on to the normal side and the lamp load 2 is connected, power generation output is generated, the lamp terminal voltage increases on the negative half cycle side, and the zener diode 58 of the lamp voltage control circuit is connected to the zener diode 58. When the current increases enough to flow, the transistor 53 becomes conductive according to the charging speed of the capacitor 59 in the delay circuit, and the phase is controlled to supply a gate output, and the SCR 51 becomes conductive to control the short circuit.
It operates to control the AC output supplied to the lamp load 2, and also operates to keep the battery charging output small by the armature reaction due to the short circuit current during the negative half cycle, and to obtain suitable charging characteristics. do. Also, at this time, the lamp voltage when the SCR 51 is turned on prevents Zener current from flowing through the no-load detection Zener diode 50.

Next, in the daytime when the switch 6 is turned to the hill side and the lamp load 2 is not connected, the negative direction output waveform of the intermediate output tap S becomes a no-load voltage waveform, and the delay circuit of the lamp voltage control circuit causes the transistor 53 to Before it becomes conductive, a Zener current flows through the Zener diode 50 and a gate signal is supplied through the resistor 54, so the SCR 51 becomes conductive and short-circuits the negative direction output, suppressing the battery charging output to a small level due to armature reaction. It operates to obtain suitable charging performance.

In the embodiment described above, the lamp load 2 is connected to the intermediate output tap S of the armature coil 1 of the generator.
Although the configuration in which the voltage regulator 5 and the voltage regulator 5 are connected is shown,
It goes without saying that the same effect can be obtained by connecting these to full output tap A.

As described above, in the present invention, the positive half cycle output used for battery charging can be controlled by the armature reaction due to the short circuit current during the negative half cycle that is not used for battery charging.

During the daytime (lamp load is not connected), the voltage waveform detected by the voltage regulator shall be a no-load waveform.

Utilizing these two points, a Zener diode for no-load detection is connected in parallel between the emitter-collector of the transistor in the lamp voltage control circuit, so that the Zener current flows only by the no-load voltage waveform, and is suitable for daytime use. Since the Zener voltage is set to obtain a charging characteristic, the lamp operates according to the no-load voltage, rather than the conventional operation according to the output of the lamp voltage control circuit, which has a large integral constant during daytime. No overcharging, suitable battery charging characteristics can be obtained, simple configuration, low cost,
It has the great effect of being highly reliable and highly practical.

[Brief explanation of the drawing]

The accompanying drawing is an electrical circuit diagram showing one embodiment of the device of the present invention. 1... Armature coil of a magnetic alternator, 2... Lamp load as an AC load, 3... Battery, 4
...Half-wave rectifier, 5...Voltage regulator, 6...Switch, 50...No-load detection Zener diode, 51
...Rectifier with control pole, 53, 56, 57, 58, 5
9... PNP transistor, resistor, Zener diode, phase control capacitor, 54, 55... that constitute the lamp voltage control circuit (AC voltage control circuit).
Resistors and capacitors that make up the gate circuit.

Claims (1)

[Claim for Utility Model Registration] One end of the armature coil 1 of a magnetic alternator is connected to a battery via a half-wave rectifier 4, and the battery is charged with the output of one half-wave of the armature coil. At the same time, a switch means 6 is connected to the armature coil.
A rectifier with control poles 51 connected in parallel to the armature coil so as to be in the forward direction with respect to the other half wave.
and delay circuits 57 and 59 connected to the other end of the armature coil, and a first Zener diode 58 that conducts at the other half wave generated in the armature coil when the switch means is ON. a series circuit consisting of a series circuit having a base between the delay circuit and the first Zener diode, a collector connected to the gate circuit of the rectifier with a control pole, and supplying a gate signal to the gate circuit of the rectifier with a control pole; and a transistor 53 connected in parallel between the collector and emitter of this transistor, which conducts by the other half wave generated in the armature coil when the switching means is OFF and the AC load is not connected. 2
A voltage regulator for a magnetic alternator, comprising a Zener diode 50 and a Zener diode 50.