CN2080258U

CN2080258U - Fully automatic charging and power supply device for small four-wheel tractor

Info

Publication number: CN2080258U
Application number: CN 90225164
Authority: CN
Inventors: 冯国栋
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-24
Filing date: 1990-12-24
Publication date: 1991-07-03

Abstract

The utility model relates to a device taking a generator driven by variable speed as a battery pack for charge, which comprises a magneto alternator, a main bridge type rectifier, an auxiliary bridge type rectifier, a storage battery, an electrical appliance, a sample circuit and a voltage-regulating circuit. The magneto alternator adopts a three-phase generator magneto alternator or a single-phase three-way magneto alternator. The utility model is used for automatically switching the states of charging and discharging the storage battery of the magneto alternator for keeping magnetism, the operation of wrenching a changeover switch is omitted for operators, and the over charging of the storage battery is avoided.

Description

Fully automatic charging and power supply device for small four-wheel tractor

It is the device of batteries charging that the utility model relates to from the generator of variable speed drives.

Tractor with small four wheels is the simple and easy tractor double as of an a kind of agricultural miniature transport facility, adopts the power supply of magneto alternator as night illumination, the electric system simple economy; But when driving a vehicle the urgent need illumination on the road surface of abnormal Qu Buping night, because tractor with small four wheels can only low speed driving, houselights does not work on the contrary, in case it is just as dark as a stack of black cats to stop, tractor with small four wheels does not have left and right sides side marker light in addition, above-mentioned problem is brought confusion and difficulty to traffic administration, and traffic accident easily takes place.The patent No. is 88219868.8 " tractor with small four wheels charging and feeding device ", on the phase line of magneto alternator, connect a rectifier, between the output of rectifier and ground, be connected to storage battery, two ends at storage battery are parallel with electrical appliance, tractor with small four wheels is powered to charge in batteries with to electrical appliance by magneto alternator under steam, when night during low speed driving, storage battery can be powered to electrical appliance, the difficult problem that illumination does not work when having solved tractor with small four wheels low speed driving at night, but after the voltage of storage battery is full of, the tractor driver need pull change over switch, and AC permanent-magnetic generator could be switched to the guarantor's magnetic state of releasing by the charged state to storage battery, thereby has increased tractor driver's operational motion, in case forgetting, the tractor driver pulls change over switch, just cause the overcharging of storage battery, shorten the life-span of storage battery, even damage storage battery.

The purpose of this utility model is the tractor with small four wheels charging and feeding device that a kind of AC permanent-magnetic generator of design can be changed automatically to the charging of storage battery, guarantor's magnetic two states of releasing.

The utility model comprises the bridge-type main converter that is connected with the phase line of magneto alternator, storage battery in parallel and electrical appliance with two outputs of bridge-type main converter, electrical appliance comprises rear taillight, headlight, stop lamp, lamp before and after lamp and the right turn before and after the left steering, in the loop of bridge-type main converter, rectifier cell is made of one-way SCR and rectifier diode, the utility model has also been set up the bridge-type that is connected with the phase line of magneto alternator and has been paid rectifier, the sample circuit in parallel with the two ends of storage battery, the voltage-regulating circuit that is connected with the output of sample circuit, the output of voltage-regulating circuit, the control utmost point of each one-way SCR is electrically connected with the output formation of paying rectifier, the bridge-type main converter, bridge-type is paid rectifier, sample circuit and voltage-regulating circuit collection are contained in the tool housing, insulation board is housed on tool housing, is respectively equipped with on the insulation board the bridge-type main converter, bridge-type is paid binding post that rectifier is connected with the phase line of magneto alternator and with bridge-type main converter and storage battery, the binding post that electrical appliance connects.

The utility model has been set up sample circuit, voltage-regulating circuit and pair rectifier, when the voltage of storage battery hangs down, the output voltage of sample circuit is low, voltage-regulating circuit ends, the output that does not tackle rectifier produces shunting, pay rectifier output voltage height, the current potential height of the one-way SCR control utmost point, the one-way SCR angle of flow is big, main converter output voltage height, the charging current of storage battery is big, the voltage of storage battery raises, the output voltage of sample circuit also increases, continue above-mentioned process, when the voltage of storage battery was elevated to the maximum voltage value that charges near permission, the output voltage of sample circuit was enough to make the voltage-regulating circuit conducting, and reach the full state that closes, the output that tackles rectifier produces strong shunting, and the output voltage of paying rectifier is low, and the current potential that one-way SCR control is extremely gone up is also low, being enough to make the angle of flow of one-way SCR is zero, one-way SCR ends, and the output of main converter no-voltage stops charge in batteries, at this moment, magneto alternator enters the guarantor's magnetic state of releasing, and along with the electricity consumption of electrical appliance, the voltage of storage battery reduces gradually, when needs charge, repeat above-mentioned process when low.Therefore, the utility model has realized that magneto alternator is to the charging of storage battery and the automatic conversion of guarantor's magnetic two states of releasing, removed the operational motion that the tractor driver pulls change over switch from, prevented to pull the damage that change over switch causes overcharge of a battery storage battery because of forgetting.

Accompanying drawing shows embodiment of the present utility model, wherein

Fig. 1 is the matching used charging and feeding device schematic diagram of permanent magnet AC threephase generator;

Fig. 2 is the electrical schematic diagram of Fig. 1;

Fig. 3 is and the matching used charging and feeding device schematic diagram of single-phase three road generators of permanent magnet AC;

Fig. 4 is the electrical schematic diagram of Fig. 3.

In the present embodiment, magneto alternator (1) adopts permanent magnet AC threephase generator or single-phase three road generators of permanent magnet AC.When adopting the permanent magnet AC threephase generator, at its phase line A, B, be connected with bridge-type main converter (2) on the C, bridge-type main converter (2) comprises one-way SCR D1, D3, D5 and resistance R 1, R2, R3 and rectifier diode D2, D4, D6, two outputs at bridge-type main converter (2) are parallel with storage battery (3) and electrical appliance (4), storage battery (3) is made of 12 volts battery pack E, electrical appliance (4) comprises rear taillight H1, H2 and K switch 1, headlight H3, H4 and K switch 2, stop lamp H5, lamp H7 before and after H6 and the K switch 3, left steering, H8, lamp H9 before and after the right turn, H10, flashing relay SJ and K switch 4; Rectifier diode D2, the D4, the D6 formation bridge-type that are connected in rectifier diode D7, D8, D9 and the main converter (2) on phase line A, B, the C are paid rectifier (5); The resistance R 7 of series connection, R8, R9 constitute the two ends that sample circuit (6) is connected in parallel on storage battery (3) mutually; Triode BG1, BG2, voltage-stabiliser tube D10, resistance R 4, R5, R6, capacitor C are formed voltage-regulating circuit (7), wherein BG1, BG2 are connected into multiple tube, be connected on after R6 and the D10 serial connection between the contact of the base stage of BG1 and R8, R9, the control utmost point of one-way SCR D1, D3, D5 is connected on the collector electrode of BG1, BG2 through resistance R 1, R2, R3 respectively, connects between the collector electrode of BG1, BG2 and D7, D8, the D9 negative pole between the emitter of the negative pole of a resistance R 4, D7, D8, D9 and BG2 and connects a resistance R 5; For safe and reliable, paying rectifier (5) collection with above-mentioned sample circuit (6), voltage-regulating circuit (7), bridge-type main converter (1), bridge-type is contained in the tool housing (8), insulation board (9) is housed on tool housing (8), and insulation board (9) is provided with binding post J _A, J _B, J _CWith binding post J1, J2, wherein J _A, J _B, J _CPay the binding post of rectifier (5) connecting line for three phase line A, B, C and bridge-type main converter (2), the bridge-type of magneto alternator (1), J1, J2 are the binding posts that bridge-type main converter (2) is connected with storage battery (3), electrical appliance (4), and BX is a fuse.

When magneto alternator (1) adopts single-phase three road generators of permanent magnet AC, bridge-type main converter (2) comprises one-way SCR D1, D3, resistance R 1, R2 and rectifier diode D2, D4, bridge-type is paid rectifier (5) and is comprised rectifier diode D7, rectifier diode D2 in D8 and the main converter (2), D4, three tunnel phase line a of single-phase three road generators of AC permanent-magnet, b, c connect into single-phase after, pay rectifier (5) by binding post Jabc with bridge-type main converter (2) and bridge-type and be connected, neutral line O pays rectifier (5) by binding post Jo with bridge-type main converter (2) and bridge-type and is connected; Remaining circuit is with the circuit of permanent magnet AC threephase generator.

In the electrical schematic diagram of Fig. 2 and Fig. 4, K switch is represented the switch of various electrical appliances, resistance R _LRepresent the load resistance of various electrical appliances.Resistance R 4, R5 are except the dc point of BG1, the BG2 of decision composition multiple tube, and R4 still is the current-limiting resistance of one-way SCR D1, D3, the D5 control utmost point, the guarantor's magneto-resistor of releasing when R5 is magneto alternator (1) zero load.

Claims

1, the full-automatic charging and feeding device of a kind of tractor with small four wheels, comprise the bridge-type main converter (2) that is connected with the phase line of magneto alternator (1), storage battery (3) and the electrical appliance (4) in parallel with two outputs of bridge-type main converter (2), electrical appliance (4) comprises rear taillight, headlight, stop lamp, lamp before and after lamp and the right turn before and after the left steering, it is characterized in that in the loop of bridge-type main converter (2), rectifier cell is made of one-way SCR and rectifier diode, also set up the bridge-type that is connected with the phase line of magneto alternator (1) and paid rectifier (5), the sample circuit (6) in parallel with the two ends of storage battery (3), the voltage-regulating circuit (7) that is connected with the output of sample circuit (6), the output of voltage-regulating circuit (7), the control utmost point of each one-way SCR is electrically connected with the output formation of paying rectifier (5), bridge-type main converter (2), bridge-type is paid rectifier (5), sample circuit (6) and voltage-regulating circuit (7) collection are contained in the tool housing (8), insulation board (9) is housed on tool housing (8), is respectively equipped with on the insulation board (9) bridge-type main converter (2), bridge-type is paid binding post that rectifier (5) is connected with the phase line of magneto alternator (1) and with bridge-type main converter (2) and storage battery (3), the binding post that electrical appliance (4) connects.

2,, it is characterized in that described magneto alternator (1) adopts the permanent magnet AC threephase generator according to the full-automatic charging and feeding device of the said tractor with small four wheels of claim 1.

3,, it is characterized in that described magneto alternator (1) adopts single-phase three road generators of permanent magnet AC according to the full-automatic charging and feeding device of the said tractor with small four wheels of claim 1.