Generating power supply device

Abstract

The invention provides a generating power supply device, wherein an element with small current capacity can be used as a rectifying element for rectifying the output of an alternating current generator to strive for cost lowering and device miniaturization. The generating power supply device is provided with a magnet type alternating current generator and a control part, wherein the magnet type alternating current generator is driven by an internal combustion engine; the control part is provided with a bridge-shaped control rectifying circuit and a charge control unit, wherein the bridge-shaped control rectifying circuit is used for rectifying the output of the generator and supplying the output for a battery; and the charge control unit is used for controlling the supply of the trigger signals of thyristors and enabling the voltage of the battery to be kept within a set range, the generating power supply device is provided with a speed detection part for detecting the rotating speed of the generator, the control part is provided with a protection control unit, and when the rotating speed of the generator detected by the speed detection part exceeds a set limit value, all the thyristors in the control rectifying circuit are set to be in an OFF state, so that the output terminals of the generator become in an OPEN state.

Description

technical field [0001] The present invention relates to a generator power supply device including a magnet-type alternator driven by an internal combustion engine, and a rectifier circuit for rectifying the output of the generator and supplying it to a battery. Background technique [0002] As a power generation device installed in a vehicle driven by an internal combustion engine, as shown in JP-A-56-150933, a power generation device comprising the following components is used: a magnet-type alternator driven by an internal combustion engine; The control rectification circuit that rectifies the output of the generator and supplies it to the battery; the voltage detection part that detects the battery voltage (voltage at both ends of the battery); controls the control rectification circuit so that the battery voltage detected by the voltage detection part is maintained at the set value range of controls. [0003] In the power generation device disclosed in Patent Document 1...

AI Technical Summary

Problems solved by technology

If the output voltage of the generator increases, the current flowing through the control rectification circuit increases, and the burden on the rectification element increases. Therefore, it is necessary to use an expensive element with a large current capacity as the rectification element, and the cost of the power generation device increases.

In addition, if the current flowing through the rectifier element increases, the heat generated from the rectifier element will increase. Therefore, it is necessary to attach a large heat sink to the rectifier element, and the size of the device cannot be avoided.

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