JPS6025343U - Battery charging control device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

Fig. 1 is a circuit diagram showing a conventional device, Fig. 2 is a circuit diagram showing an embodiment of the present invention, and Fig. 3 is a circuit diagram showing an embodiment of the present invention when a reversely connected battery falls off while the generator is operating. FIG. 4 is a voltage and current waveform diagram for explaining the operation, and a circuit diagram showing another embodiment of the present invention.

Claims (1)

[Scope of utility model registration request] A controlled rectifier circuit in which a plurality of series circuits of Cyrisk and diodes are connected in parallel and the cathodes of the diodes and the anodes of the Cyrisk are connected in common, respectively, and an AC power generator that applies voltage between the AC input terminals of the controlled rectifier circuit. a battery connected between the DC output terminals of the controlled rectifier circuit and charged by the output of the generator when the thyristor is conductive; an inductive load connected in parallel to the battery via a switch; a signal circuit that provides an ignition signal to each of the control rectifier circuits, the signal circuit having an emitter coupled to the positive terminal of the battery via the switch, and a collector coupled to each of the terminals via a first collector resistor. a first transistor coupled to the gate of the thyristor, an emitter commonly connected to the emitter of the first transistor, a collector connected to the base of the first transistor, and a second collector resistor; a second transistor connected to the negative terminal of the battery through the battery, a resistive voltage divider circuit connected in parallel to the battery, and a resistive voltage divider circuit with the cathode facing the base side of the second transistor. and the base of the second transistor, and when the terminal voltage of the battery is equal to or higher than a set value, the second transistor
a Zener diode that allows a base current to flow through the transistor; a pace-emitter resistor connected in parallel between the base and emitter of the second transistor; one end connected to the collector of the second transistor and the other end connected to the base emitter of the second transistor; and a collector resistor coupled to a negative terminal of the battery, and when the terminal voltage of the battery is equal to or higher than a set value, the second transistor is made conductive and the first transistor is prevented from being conductive. Stop supplying gate current to each sirisk of the rectifier circuit,
In the battery charging control device, the first transistor is made conductive to supply a gate current to each of the thyristors when the terminal voltage of the battery is less than a set value, wherein the first transistor is made conductive when the terminal voltage is made conductive. an optical switch coupled to the signal circuit to prevent
a light emitting diode connected in parallel to the battery with its anode facing the negative terminal side of the normally connected battery and disposed close to the light receiving section of the optical switch; What is claimed is: 1. A battery charging control device comprising: a light emission holding capacitor connected in parallel;