JPS6320106B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power generation device of a magnetic alternator that is mounted on an internal combustion engine or the like and driven at a variable speed.

Conventionally, a magnetic AC generator for a vehicle is equipped with an AC load generating coil that drives an AC load such as a lamp, and a charging generating coil that is mainly used to charge a battery, as shown in Fig. 1. ,
An AC load 4 is connected to the AC load generator coil 2, and the charging generator coil 1 is connected to a battery 3 via a half-wave rectifier 5, so that the generated output of the magnetic AC generator is supplied to each load. I was taking it.

However, in the conventional configuration described above, the output of the charging coil 1 is half-wave rectified and connected to the battery 3, so current only flows in the positive direction to the charging generator coil 1, and the battery charging current at high speed There is a possibility that the battery 3 will be overcharged. Conventionally, this has been dealt with by increasing the number of turns in the charging generator coil 1, but this method has a limit in terms of the winding space, and because it involves winding many wires with a small diameter, it generates heat. There was a problem with getting bigger. Also, AC load 4
There is also the disadvantage that the magnet structure of the magnet generator must be changed in response to a large increase in the number of magnets.

In order to solve the above-mentioned drawbacks, the present invention aims to increase the AC load power generation output and improve the battery charging characteristics with an extremely simple device without changing the magnetic AC generator. In the case where a generator coil for AC load is separately provided, the rectifier and the AC load are connected to both ends of the generator coil for charging so as to supply half-wave output (hereinafter referred to as negative half-wave output) that is not used for battery charging to the AC load. By connecting a series circuit with the load, the purpose is to increase the AC load output and to suppress the increase in battery charging current at high speed due to the armature reaction caused by the negative current flowing in the charging generator coil.

The present invention will be described below with reference to embodiments shown in the drawings. FIG. 2 shows the basic circuit of the present invention. Reference numerals 1 and 2 denote a charging generating coil and an AC load generating coil of a magnetic AC generator, and the outputs of both coils 1 and 2 are in the same phase. The output of the AC load generator coil 2 is supplied to an AC load 4. Further, the output of the charging generator coil 1 charges the battery 3 via the half-wave rectifier 5. The half-wave of the charging generator coil 1 that is not used for battery charging is supplied to the AC load 4 via the half-wave rectifier 6.

In the above configuration, by supplying the negative half wave (anti-battery charging half wave) of the charging generator coil 1 to the AC load 4 via the half wave rectifier 6, the AC load output is increased. At the same time, since a negative half-wave current also flows through the charging generator coil 1, an increase in battery charging current at high speed rotation can be suppressed due to the armature reaction caused by this negative current.

FIG. 3 shows the characteristics of AC load voltage E and charging current I with respect to engine speed, where the broken line is for the conventional device and the solid line is for the device of the present invention.

Note that the load on the battery charging coil 1 is not limited to the battery 3, and a direct current load such as a lamp or a horn may be connected in parallel with the battery 3.

As described above, in the present invention, a series circuit of a half-wave rectifier and an AC load is connected to both ends of the charging generating coil, and the negative half wave (anti-battery charging half wave) of the charging generating coil is connected to the half-wave rectifier. Since the AC load is supplied to the AC load via the By adopting this method, it is possible to deal with the problem without changing the magnet structure, and furthermore, it is possible to suppress the increase in battery charging current at high speed. This has the excellent effect of reducing the amount of heat generated by the generating coil.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram showing a conventional device, FIG. 2 is a basic electric circuit diagram showing an embodiment of the device of the present invention, and FIG. 3 is a characteristic diagram of the conventional device and the device of the present invention. 1... Generator coil for charging, 2... Generator coil for AC load, 3... Battery, 4... AC load,
5, 6...Half wave rectifier.

Claims (1)

[Claims] 1 Equipped with a magnetic alternator having an AC load generating coil for driving an AC load and a charging generating coil used for charging a battery, the battery is connected to the battery through a half-wave rectifier at both ends of the charging generating coil. and an AC load is connected to both ends of the AC load generating coil, in which half-wave output is connected to both ends of the charging generating coil to supply the half-wave output that is not used for battery charging to the AC load. 1. A power generation device of a magnetic AC generator, characterized in that a series circuit of a rectifier and the AC load is connected.