JPH03128632A - Charger for marine propeller - Google Patents

Abstract

PURPOSE:To suppress the output voltages at the time of a battery being effective and at the time of the battery being disconnected to the relatively low voltage so as to protect a loading device by controlling the proper charge voltage of the battery with a first voltage control circuit and controlling the overcharge voltage of the battery with a second voltage control circuit. CONSTITUTION:The principal part is composed of a battery 11, a generating coil 13, a rectifying circuit 14, a thyristor 21A, a first voltage control circuit 22A, a thyristor 21B, and a second voltage control circuit 22B. When the battery 11 is effective, the control of only the thyristor 21A is done by the first voltage control circuit 22A. When the battery 11 is disconnected, further the thyristor 21B is controlled by the second voltage control circuit 22B. Hereby, it can protect a loading device by taking out a tachometer signal easily when there is a battery, and suppressing the output voltage to relatively low voltage when the battery is disconnected.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a charging device for a marine vessel propulsion device such as an outboard motor.

[Prior Art] Conventionally, an outboard motor includes a power generation coil that operates when the internal combustion engine is operating, and first and second input terminals of a rectifier circuit are connected to first and second output terminals of the power generation coil, respectively. The terminals can be connected to each other, and a battery can be connected to the output terminal of the rectifier circuit.

By the way, some of the conventional charging devices described above are equipped with a regulator. This regulator connects a thyristor to the input terminal of the rectifier circuit, and controls the output voltage of the rectifier circuit (voltage supplied to the battery) to a predetermined regulated voltage by controlling the conduction state of this thyristor. It is configured with a control circuit.

At this time, conventional regulators include a half-wave control regulator and a full-wave control regulator.

A half-wave control regulator connects a thyristor only to one of the first and second input terminals of the rectifier circuit, and controls only the AC power flowing from the power generation coil toward this one input terminal.

Further, the full-wave control regulator connects a thyristor to each of both the first and second input terminals of the rectifier circuit, and controls all of the alternating current power flowing from the generator coil toward each of both input terminals. .

In the case of an outboard motor, it is desirable to extract a signal for driving the tachometer from the electric circuit constituting the charging device when the battery is present. When the battery is disconnected, it is an abnormality and there is no need for the tachometer to operate.

[Problems to be Solved by the Invention] However, when using a half-wave control regulator and a gold-wave control regulator in a conventional charging device, there are the following problems (1) and (2), respectively.

■When using a half-wave control regulator, the tachometer signal can be easily retrieved, but when the battery is disconnected, the output voltage of the rectifier circuit becomes a high voltage (100V~zoov), and this high voltage is applied to a load device such as a tachometer. applied.

For this reason, it has been necessary to use elements with high withstand voltage on the input side of the load device.

Furthermore, when using this half-wave control regulator, as long as there is a battery, the output voltage on the half-wave side that is not regulated is limited to the overcharge voltage, for example, 20 V or less, due to power consumption within the battery. Ru. When the battery is disconnected, the above-mentioned power consumption in the battery disappears, and the unregulated output voltage becomes
The voltage will be high as mentioned above.

■When using a full-wave control regulator, even if the battery is disconnected, the full-wave output voltage is regulated and the voltage applied to the load device remains constant and low.

However, in this case, the tachometer signal cannot be easily extracted. It is necessary to install a tachometer signal output circuit.

An object of the present invention is to easily extract a tachometer signal when the battery is present, and to suppress the output voltage to a relatively low voltage when the battery is disconnected to protect the load device.

[Means for Solving the Problems] The present invention includes a power generation coil that operates during operation of an internal combustion engine, and first and second input terminals of a rectifier circuit are connected to first and second output terminals of the power generation coil, respectively. Connect each of the terminals,
Furthermore, rectification is performed by connecting first and second current control elements to the first and second input terminals of the rectifier circuit, respectively, and controlling the conduction states of the first and second current control elements. In a charging device for a marine propulsion device that includes a voltage control circuit that controls the output voltage of the circuit to a predetermined regulated voltage and that can be used by connecting a battery to the output terminal of the rectifier circuit, the voltage control circuit includes a first and the second current control element, the regulation voltage for the first current control element is set to a value that can control the appropriate charging voltage of the battery, and the second current control element The regulated voltage for this is set to a value that exceeds the overcharge voltage of the battery.

[Effect] According to the present invention, there is the following effect (2).

(2) As described above, the output voltage of the rectifier circuit when the battery is present will hardly exceed the overcharge voltage of, for example, 20 V at maximum due to power consumption within the battery.

Therefore, when the battery is present, the voltage control circuit determines that the regulated voltage is the appropriate charging voltage of the battery (for example, 15±
0.5V) is controlled.

That is, when the battery is present, the tachometer signal can be easily extracted as a result of being controlled like a half-wave control regulator.

(2) The output voltage of the rectifier circuit when the battery is disconnected greatly exceeds the overcharge voltage of the battery, reaching a maximum of 100 to 200 V or more, since the above-mentioned power consumption within the battery is eliminated.

Therefore, when the battery is disconnected, the voltage control circuit determines that the regulated voltage is the appropriate charging voltage of the battery (for example, 15
±0.5V);
The value at which the regulated voltage exceeds the battery overcharge voltage (
For example, both of the second current control elements set to 28±3V) are controlled.

That is, when the battery is disconnected, as a result of being controlled by a full-wave control regulator, the voltage related to the load device is low, and it is possible to protect the load device while simplifying voltage resistance measures for the load device.

Note that when the battery is disconnected, the tachometer signal cannot be retrieved, but the disconnection of the battery is abnormal and no problem occurs even if the tachometer does not operate.

[Example] Fig. 1 is an electric circuit diagram showing an example of the present invention, Fig. 2 is an electric circuit diagram showing details of the voltage control circuit of Fig. 1, and Fig. 3 is an output current during half-wave control. FIG. 4 is a schematic diagram showing the output voltage waveform during full-wave control.

As shown in FIG. 1, the outboard motor is equipped with a charging device 12 for charging a battery 1.1. The charging device 12 is
It includes a power generating coil 13 (13A is a flywheel magnet) and a rectifier circuit 14.

The generator coil 13 operates when the internal combustion engine of the outboard motor is operating.

The rectifier circuit 14 has its first and second input terminals 16A and 16B connected to the first and second output terminals 15A and 15B of the power generating coil 13, respectively. still,
The rectifier circuit 14 has a positive side line and a negative side line, the positive side line has a positive side diode 17 interposed therein, the negative side line has a negative side diode 18 interposed therein, and the generating coil 13 The AC power output by the converter is rectified to obtain DC power.

Thereby, the charging device T112 is used by connecting the positive electrode of the battery 11 to the positive line terminal of the rectifier circuit 14.

Furthermore, the charging device 12 connects the first thyristor 21A to the first input terminal -16A of the rectifier circuit 14, and connects the first voltage control circuit 22A that controls the conduction state of the thyristor 21A to the first input terminal -16A of the rectifier circuit 14. It is interposed between the input terminal 16A and the gate of the thyristor 21A. This voltage control circuit 22A may be interposed between the output terminal 23 of the rectifier circuit 14 and the gate of the thyristor 21A. That is, the charging device 12 controls the first voltage control circuit 2 when the output voltage of the rectifier circuit 14 reaches a predetermined regulated voltage Va.
At 2A, the first thyristor 21A is turned on, thereby controlling the output voltage of the rectifier circuit 14 to the above-mentioned regulated voltage Va.

Further, the charging device 12 is connected to the second input terminal 1 of the rectifier circuit 14.
A second voltage control circuit 22 that connects a second thyristor 21B to 6B and controls the conduction state of this thyristor 21B.
B is the input terminal 16B of the rectifier circuit 14 and the thyristor 2
It is interposed between it and the gate of 1B. This voltage control circuit 22B connects the output terminal 23 of the rectifier circuit 14 and the thyristor 21.
It may be interposed between the gate B and the gate B. That is, the charging device 12 controls the second voltage control circuit 22B when the output voltage of the rectifier circuit 14 reaches the predetermined regulated voltage vb.
Then, the second thyristor 21B is turned on, thereby controlling the output voltage of the rectifier circuit 14 to the above-mentioned regulated voltage vb.

However, in the voltage control circuits 22A and 22B of this embodiment, the regulated voltages Va and Vb for the first and second thyristors 21A and 21B are made different, and the first voltage control circuit 22A is The regulated voltage Va for the first thyristor 21A determined is a value (for example, 15 ± 0.5 V) that can control the appropriate charging voltage of the battery 11, and the regulated voltage Va for the second thyristor 21 determined by the second voltage control circuit 22B is set to a value that can control the appropriate charging voltage of the battery 11.
The regulated voltage vb for B is a value exceeding the overcharge voltage of the battery 11 (for example, 20V) (for example, 28±3V).
).

Specifically, as shown in FIG. 2, the first voltage control circuit 22A uses a resistor and a Zener diode to control the above Va.
The second voltage control circuit 22B determines the above vb using a Zener diode.

Next, the operation of this embodiment will be explained.

(2) As described above, the output voltage of the rectifier circuit 14 when the battery 11 is in operation will hardly exceed the overcharge voltage of, for example, 20V due to the power consumption within the battery 11, at the maximum.

Therefore, when the battery 11 is on, the first voltage control circuit 22A controls only the first thyristor 21A whose regulated voltage Va is set to the appropriate charging voltage of the battery 11 (for example, 15±0, 5V). Control.

That is, when the battery 11 is in operation, as shown in FIG. 3, as a result of being controlled like a half-wave control regulator,
The tachometer signal (P in FIG. 3) can be easily extracted.

■The output voltage of the rectifier circuit 14 when the battery 11 is disconnected greatly exceeds the overcharge voltage of the battery 11 and reaches a maximum of 10
The voltage ranges from 0V to over 200V.

Therefore, when the battery 11 is disconnected, the first voltage control circuit 22A controls the first thyristor 21 whose regulated voltage Va is set to the appropriate charging voltage of the battery 11 (for example, 15±0.5V). At the same time,
The second voltage control circuit 22B controls the regulated voltage v
b is a value exceeding the overcharge voltage of the battery 11 (for example, 28
It also controls the second thyristor 21B which is set at ±3V).

In other words, when the battery 11 is disconnected, as shown in FIG. 4, as a result of the full-wave control regulator-like control, the voltage applied to the load device is low, and the load device can be operated while simplifying the withstand voltage measures of the load device. Can be protected. Note that the peak value of the output voltage is approximately 30V.

Although the tachometer signal cannot be obtained when the battery 11 is disconnected, disconnection of the battery 11 is abnormal and no problem occurs even if the tachometer does not operate.

[Effects of the Invention] As described above, according to the present invention, when the battery is present, the tachometer signal can be easily extracted, and when the battery is disconnected, the output voltage can be suppressed to a relatively low voltage to protect the load device.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram showing an embodiment of the present invention, Fig. 2 is an electric circuit diagram showing details of the voltage control circuit shown in Fig. 1, and Fig. 3 is a schematic diagram showing the output current waveform during half-wave control. 4 are schematic diagrams showing output voltage waveforms during full-wave control. DESCRIPTION OF SYMBOLS 11...Battery, 12...Charging device, 13...Generating coil, 14...Rectifier circuit, 21A...First thyristor, 21B...Second thyristor, 22A...th 1 voltage control circuit, 22B... second voltage control circuit.

Claims (1)

[Claims] (1) Equipped with a power generation coil that operates when the internal combustion engine is operating;
First and second input terminals of a rectifier circuit are connected to each of the first and second output terminals of the power generation coil, and a first input terminal is connected to each of the first and second input terminals of the rectifier circuit. and a second current control element, and controls the output voltage of the rectifier circuit to a predetermined regulated voltage by controlling the conduction state of the first and second current control elements. In the charging device for a marine propulsion device, which can be used by connecting a battery to the output terminal of the rectifier circuit, the voltage control circuit has different regulated voltages for each of the first and second current control elements, The regulated voltage for the first current control element was set to a value that could control the proper charging voltage of the battery, and the regulated voltage for the second current control element was set to a value that exceeded the overcharge voltage of the battery. A charging device for a ship propulsion device characterized by the following.