CN2116303U - Electronic voltage regulator for automotive silicon rectifying generator - Google Patents

Abstract

The utility model provides an electronic voltage regulator for an automotive silicon rectifying generator, comprising a regulator casing, a voltage stabilizing control circuit, a protecting circuit and an exciting switch circuit installed in the casing. The protecting circuit comprises an over-voltage protecting circuit and an over-current protecting circuit, the over-voltage protecting circuit is composed of a capacitor C, and the over-current protecting circuit is composed of a sampling resistor, a triode BG, a controllable silicon T and resistance elements. The utility model has the advantages of perfect functions, high precision, long service life, convenient installation and operation, etc., and the utility model is the ideal matching device for automobiles, tractors and mechanism devices provided with various silicon rectifying generators.

Description

Electronic voltage regulator for automotive silicon rectifying generator

The utility model relates to a kind of automobile silicon rectification generator electronic voltage controller.

The automobile silicon rectification generator electronic voltage controller of domestic production does not at present all have the non-loaded protective circuit of generator output end, makes adjuster regulation voltage when non-loaded out of control, and damages rapidly.China's CN87213089 patent disclosure a kind of automobile silicon rectification generator voltage regulator; be to adopt triode at no any autoprotection measure in the existing transistor regulator circuit; an or protective circuit of diode formation; have only when the short circuit of generator field winding; this protective circuit is the components and parts of protective transistor adjuster effectively; but when generator field winding generation partial short-circuit; the overcurrent sort circuit that causes therefrom but is difficult for protection; light then influence life-span of adjuster, heavy then damage the element of adjuster.

The purpose of this utility model is to overcome above-mentioned deficiency and a kind of improved automobile silicon rectification generator electronic voltage controller is provided.

The utility model provides a kind of automobile silicon rectification generator electronic voltage controller; by governor body and be contained in controlling circuit of voltage regulation in the housing; protective circuit and field switch circuit are formed; protective circuit comprises excess voltage protection and circuit overcurrent protection; excess voltage protection is made of capacitor C; capacitor C is connected with the input of controlling circuit of voltage regulation; circuit overcurrent protection is by sample resistance; triode BG; controllable silicon T and resistive element constitute; the sample resistance that is connected on the circuit overcurrent protection input is connected in series with the field switch circuit; the two ends of sample resistance respectively with the base stage of triode BG; emitter connects; the collector electrode of triode BG connects the control utmost point of controllable silicon T by resistance; the anode of controllable silicon T is connected with the positive pole of storage battery E, and the negative electrode of controllable silicon T is connected with the output of controlling circuit of voltage regulation.

The operation principle of excess voltage protection is as follows: when generator output end does not have heavy duty or when non-loaded when opening circuit (refer to the loose contact of storage battery positive and negative electrode or); because capacitor C has the effect of store charge; can provide voltage to controlling circuit of voltage regulation; thereby make adjuster not have heavy duty or when non-loaded at generator output end; voltage does not raise, and has played the overvoltage protection effect.

The basic principle of circuit overcurrent protection is: when conditioner outlet end load current during greater than certain value; voltage drop on the sample resistance that is connected in the field switch circuit is increased; make triode BG conducting; BG triggers controllable silicon T after the divider resistance dividing potential drop; controllable silicon T conducting, thus the exciting curent of the generator field winding that is connected in the field switch circuit is cut off.

The utlity model has and improve reliable excitation output overload or short circuit automatic protection functions; non-loaded (the accumulator positive of generator output end; the negative pole loose contact or open circuit) time voltage automatic controlled function; and overcome diesel vehicle storage battery when charging; the too small unsettled phenomenon of charging voltage that causes of generator output; has perfect in shape and function; the degree of regulation height; life-span is long; easy to install; characteristics such as volume is little, and cost is low are applicable to and install and use on the vehicle of various vehicles; be the automobile that various silicon rectification generators are housed, the desirable support device of tractor and plant equipment.

Fig. 1 circuit diagram of the present utility model

Fig. 2 outline drawing of the present utility model

Fig. 3 is the left view of outline drawing shown in Figure 2

Fig. 4 is the profile of outline drawing shown in Figure 2 along the A-A section.

Accompanying drawing 1 has been described circuit diagram of the present utility model; circuit of the present utility model is made up of four parts; controlling circuit of voltage regulation 1; field switch circuit 2; excess voltage protection 3 and circuit overcurrent protection 4; controlling circuit of voltage regulation is by voltage-stabiliser tube DW; diode D1; triode BG1; capacitor C 1; resistance R 1; R2; R3; R4 and R5 form; field switch circuit 2 is by diode D2; D3; triode BG2; BG3 and resistance R 6 are formed; the input B of controlling circuit of voltage regulation 1 connects the positive pole of storage battery E; the output F of field switch circuit 2 meets silicon rectification generator field winding RL; when silicon rectification generator voltage is lower than rated voltage (14V); voltage on the voltage-stabiliser tube DW is lower than its puncture voltage; DW ends; triode BG1 base stage no current and ending; the output of collector electrode no current is electronegative potential, and triode BG2 base voltage is higher than triode BG1 collector voltage; triode BG2 base current is through diode D2; resistance R 6 flows into negative pole; triode BG2; BG3 conducting, triode BG3 emitter have exciting current output, generator for electricity generation; when generator voltage reaches the regulation voltage rated value; voltage-stabiliser tube DW punctures conducting, and triode BG1 base current is through voltage-stabiliser tube DW, diode D1; resistance R 2; R3 flows into negative pole; triode BG1 conducting, its current collection is high potential very, and triode BG2 does not have base current to be ended; triode BG3 ends; generator magnetizing coil winding RL no current, generator output voltage descend, when voltage is reduced to rated voltage when following; voltage-stabiliser tube DW ends; triode BG1 ends, triode BG2; the BG3 conducting, generator has exciting curent; generator output voltage raises, and working so again and again is stabilized in the prescribed limit generator output voltage.Excess voltage protection 3 is made of capacitor C 2; capacitor C 2 is connected with the input of controlling circuit of voltage regulation 1; when generator output end does not have heavy duty or (refers to accumulator positive when non-loaded; the negative pole loose contact or when opening circuit); because capacitor C 2 has the effect of store charge; can provide voltage to controlling circuit of voltage regulation 1; thereby make adjuster not have heavy duty or when non-loaded at generator output end; voltage does not raise; played the overvoltage protection effect; circuit overcurrent protection 4 is by sample resistance R9; triode BG4; controllable silicon T and resistance R 7; R8 constitutes; the sample resistance R9 that is connected on circuit overcurrent protection 4 inputs is connected in series with field switch circuit 2; the two ends of sample resistance R9 respectively with the base stage of triode BG4; emitter connects; the collector electrode of triode BG4 connects the control utmost point of controllable silicon T by resistance R 7, and the anode of controllable silicon T is connected with the positive pole of storage battery E, and the negative electrode of controllable silicon T is connected with the output of controlling circuit of voltage regulation 1.

When conditioner outlet end load current during greater than certain value, the electric current that flows through sample resistance R9 increases, the voltage drop at sample resistance R9 two ends is increased, and makes triode BG4 conducting, triggers controllable silicon T after resistance R 8, R7 dividing potential drop, controllable silicon T conducting, triode BG1 current collection is high potential very, and diode D2 ends, triode BG2, BG3 also ends, the output of conditioner outlet end F point no current.Reached the purpose of protection adjuster.After fault is got rid of, only need reclose power supply, adjuster just can recover operate as normal automatically.

Fig. 2, Fig. 3 and Fig. 4 have described inside of the present utility model and contour structures.Governor body is by adjuster base plate 5, the adjuster wiring board insulation fixed mount 6 and the adjuster loam cake 7 that are fixed with one are with it formed, adjuster base plate 5 is stamped to form by the thick aluminium sheet of 3mm, adjuster wiring board insulation fixed mount 6 adopts ABS plastic injection molded, constitute all concentrated being contained on the printed on both sides wiring board 8 of all electronic original parts of above-mentioned each circuit, printed on both sides wiring board 8 is fixed on the adjuster wiring board insulation fixed mount 6 between adjuster base plate 5 and the adjuster loam cake 7, adjuster loam cake 7 is stamped to form for the thick iron sheet of 0.6mm, be one with 5 riveted joints of adjuster base plate, draw binding post 9 from printed on both sides wiring board 8,10, binding post 9 is drawn from the input B of controlling circuit of voltage regulation 1, connect the positive pole of storage battery E, binding post 10 is drawn from the output F of field switch circuit 2, meet silicon rectification generator magnetizing coil RL, adjuster base plate 5 is installed on the car body, promptly connects the storage battery negative pole.

Claims (1)

1; a kind of automobile silicon rectification generator electronic voltage controller; by governor body and be contained in controlling circuit of voltage regulation in the housing; protective circuit and field switch circuit are formed; of the present utility model being characterised in that; protective circuit comprises excess voltage protection and circuit overcurrent protection; excess voltage protection is made of capacitor C; capacitor C is connected with the input of controlling circuit of voltage regulation; circuit overcurrent protection is by sample resistance; triode BG; controllable silicon T and resistive element constitute; the sample resistance that is connected on the circuit overcurrent protection input is connected with the field switch circuit; the two ends of sample resistance respectively with the base stage of triode BG; emitter connects; the collector electrode of triode BG connects the control utmost point of controllable silicon T by resistance; the anode of controllable silicon T is connected with the positive pole of storage battery E, and the negative electrode of controllable silicon T is connected with the output of controlling circuit of voltage regulation.

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