CN203289174U - Full-automatic large-power LED lamp power supply circuit - Google Patents

Full-automatic large-power LED lamp power supply circuit Download PDF

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Publication number
CN203289174U
CN203289174U CN2013203614608U CN201320361460U CN203289174U CN 203289174 U CN203289174 U CN 203289174U CN 2013203614608 U CN2013203614608 U CN 2013203614608U CN 201320361460 U CN201320361460 U CN 201320361460U CN 203289174 U CN203289174 U CN 203289174U
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China
Prior art keywords
triode
storage battery
power supply
circuit
constant current
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Expired - Fee Related
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CN2013203614608U
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Chinese (zh)
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陈邦伟
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陈邦伟
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Abstract

An embodiment of the utility model discloses a full-automatic large-power LED lamp power supply circuit. The full-automatic large-power LED lamp power supply circuit comprises a storage battery, a charging circuit, and an LED load power supply circuit connected with the storage battery; the charging circuit comprises a direct current power supply and a charging control circuit connected with the direct current power supply, and the charging control circuit has a first switch unit and a second switch unit; and the LED load power supply circuit has a constant current triode, a driving triode, and a constant current resistor. By adoption of the full-automatic large-power LED lamp power supply circuit, when the voltage of the storage battery is lower than a set voltage value, the storage battery is charged automatically; when the storage is fully charged, the second switch unit is conducted and the first switch unit is thus disconnected, and the charging of the storage battery stops; and when the electric quantity of the storage battery is not sufficient, the driving triode stops working, thus the constant current triode is turned off, and output power supply by the storage battery is stopped.

Description

Full-automatic high-power LED lamp power circuit
Technical field
The utility model relates to a kind of LED lamp power circuit, relates in particular to a kind of full-automatic high-power LED lamp power circuit.
Background technology
charging and the power supply circuits of at present common LED lamp, generally include the filter circuit and the rectification circuit that connect successively, input power is carried out filtering successively, charge a battery after rectification, storage battery is powered to the work of LED lamp again, yet adopt this charging and supply power mode to have the problem of two aspects, the one, when storage battery not timely deenergization when being full of electricity, storage battery overcharges continuing and the danger that easily causes leakage even to be exploded, the one, LED can only passive reception supply current, when the storage battery quantity not sufficient, when supply power voltage reduces, LED lamp running current can't be provided and continue power consumption, make the lost of life of storage battery, and the memory effect due to storage battery, the low electric weight of permanent maintenance will be difficult to charging, sort circuit of the prior art haves much room for improvement.
The utility model content
The utility model embodiment technical problem to be solved is, a kind of full-automatic high-power LED lamp power circuit is provided.Can make storage battery be full of electric weight and automatically stop charging, when the storage battery quantity not sufficient, automatically stopping the power supply of LED lamp.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of full-automatic high-power LED lamp power circuit, comprises the LED load supplying circuit of storage battery, charging circuit, the described storage battery of connection;
The charging control circuit that described charging circuit comprises DC power supply and connects described DC power supply, described charging control circuit has the first switch element and second switch unit, described storage battery connects described DC power supply by described the first switch element, described second switch unit has the voltage control circuit that is connected on described storage battery, when the voltage of described storage battery arrived charging upper limit voltage, described second switch unit opened circuit described the first switch element;
Described LED load supplying circuit has constant current triode, drives triode, constant current resistance, the described constant current resistance of LED load serial connection, constant current triode are connected to described storage battery two ends, described constant current triode also is connected to start-up capacitance, on described constant current resistance and be connected to divider resistance, described divider resistance provides bias voltage for described driving triode, and described driving triode makes described constant current triode conducting.
Further, described the first switch element comprises the first triode, the second triode, described the first triode is serially connected with between described storage battery and DC power supply, its base stage controls conducting by described the second triode, the base stage of described the second triode is connected to described DC power supply anode by pull-up resistor, and emitting stage connects described DC power supply negative terminal.
Further, be connected in series the anti-diode of filling with between described storage battery and described the first triode.
Further, described second switch unit comprises the 3rd triode, its collector electrode is electrically connected to the base stage of described the second triode, emitter connects described DC power supply negative terminal, base stage connects the anode of described storage battery by voltage stabilizing didoe, and by pull down resistor, connects described DC power supply negative terminal.
Further, also comprise the relay that is connected on described DC power supply two ends, the normally closed switch of described relay is serially connected with on the output of described storage battery.
Further, described DC power supply is for to carry out transformation rectification out-put supply by transformer and rectifier bridge to civil power.
Implement the utility model embodiment, has following beneficial effect: when the voltage of storage battery during lower than the magnitude of voltage set, the first switch element conducting, make charge in batteries, when storage battery is full of electricity, second switch cell conduction and cause the first switch element and open circuit, charge in batteries stops, and stop storage battery output power supply in charging process, prevent that the LED load from damaging; And when the electric weight of storage battery is not enough, drive triode to quit work, and constant current triode is turn-offed, stop storage battery output power supply.
Description of drawings
Fig. 1 is basic structure block diagram of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
Embodiment
, for making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.
With reference to structured flowchart of the present utility model shown in Figure 1.
The utility model has comprised the power supply circuits of storage battery 10, charging circuit and LED load.
charging circuit comprises DC power supply 201, charging control circuit, charging control circuit is by the first switch element 202, second switch unit 203 forms, storage battery 10 is electrically connected to DC power supply 201 by the first switch element 202, second switch unit 203 has voltage control circuit 204, voltage control circuit 204 is connected on storage battery 10, when storage battery 10 voltages reach the setting voltage of voltage control circuit 204, the second switch cell operation, make the first switch element 202 turn-off, stop storage battery 10 chargings, when storage battery 10 voltages do not reach the setting voltage of voltage control circuit 204, the first switch element 202 conductings, storage battery 10 enters charged state.Wherein, DC power supply 201 is, by the transformation rectification circuit, civil power is carried out transformation rectification output.
the power supply circuits of LED load have constant current triode 301, drive triode 302, constant current resistance 303, constant current triode 301, constant current resistance 303, LED load 304 is serially connected with on storage battery 10 two ends, on constant current triode 301 and be connected to start-up capacitance 305, on constant current resistance 303 and be connected to divider resistance 306, pass through start-up capacitance, make divider resistance 306 provide bias voltage for driving triode 302, make and drive triode 302 conductings driving constant current triode 301 conductings, storage battery 10 is by constant current triode 301, constant current resistance 303 is LED load 304 constant current-supplyings.
Below will further illustrate in conjunction with electrical block diagram shown in Figure 2 again.
In the present embodiment, charging circuit comprises DC power supply, charging control circuit, DC power supply 201 is by transformer T1, civil power to be carried out after transformation carrying out rectifying and wave-filtering by rectifier bridge U1, capacitor C 1 again to obtain, the second switch unit that charging control circuit comprises the first switch element of being comprised of the first triode Q1, the second triode Q2, is comprised of the 3rd triode Q3, voltage stabilizing didoe ZD; The emitter of the first triode Q1, collector series connection are between storage battery and DC power supply, its base stage connects the collector electrode of the second triode Q2 by lower connecting resistance R3, the emitter of the second triode Q2 connects the negative terminal of DC power supply, and base stage connects the anode of DC power supply by upper connecting resistance R2; The collector electrode of the 3rd triode Q3 connects the base stage of the second triode Q2, and base stage connects the anode of storage battery E by voltage stabilizing didoe ZD, and by lower connecting resistance R5, connects the DC power supply negative terminal, and emission connects the DC power supply negative terminal.
The rated voltage of storage battery E is preferably 6V, the voltage of voltage regulation of voltage stabilizing didoe ZD is 7.5V, when connecting with the mains, ZD is in cut-off state due to voltage stabilizing didoe, and the base stage of the 3rd triode Q3 is low level, the 3rd triode Q3 cut-off, the base stage of the second triode Q2 is high level, the second triode Q2 conducting, and the base stage that makes the first triode is low level, the first triode Q1 conducting, DC power supply is by the first triode Q1 accumulators E charging; When storage battery E is full of electricity, the voltage of storage battery E is greater than 7.5V, voltage stabilizing didoe ZD punctures conducting, the base stage of the 3rd triode Q3 is high level, the 3rd triode Q3 conducting, and the base stage that makes the second triode Q2 is low level, the second triode Q2 cut-off, and the first triode Q1 cut-off, storage battery E charging are stopped automatically, prevent from overcharging and cause leakage or blast.
And for fear of making storage battery E produce the anti-phenomenon of filling with, series diode D1 between storage battery E and the first triode Q1.
LED load supplying circuit comprises constant current triode Q4, drives triode Q5, constant current resistance R7, be connected on storage battery E two ends after LED load serial connection constant current resistance R7, constant current triode Q4, on constant current resistance R7 and be connected to divider resistance R8, R9, divider resistance R8, R9 are for driving the biasing resistor of triode Q5, provide conducting required bias voltage, the base stage of constant current triode Q4 is connected with the collector electrode that drives triode Q5, and the emitter that drives triode Q5 is connected in the dividing potential drop output of resistance R 8, R9.
on the emitter of constant current triode Q4 and collector electrode and be connected to starting resistance R6, with starting resistance R6 and connect also have start-up capacitance C3, when the LED load is connected, the electric current of storage battery E is by start-up capacitance C3, constant current resistance R7 is the LED load supplying, by divider resistance R8, R9 powers on to compress into after dividing potential drop to constant current resistance R7 two ends provides enough bias voltages for driving triode Q5, make and drive triode Q5 conducting, and then make constant current triode Q4 conducting, supply current is by constant current triode Q4, constant current resistance R7 is the LED load supplying, when the electric weight of storage battery E is not enough, supply power voltage reduces, the electric current that flows through constant current resistance R7 diminishes, the voltage at its two ends is corresponding to diminish, resistance R 8, R9 can't provide the bias voltage that drives triode Q5 conducting, drive triode Q5 cut-off, and then constant current triode Q4 is ended, the LED load quits work dead electricity, avoid storage battery E over-discharge can and shorten the life-span.
In order to make DC power supply when for storage battery E, charging; avoid LED load connection work and produce and damage on the DC power supply two ends and succeed electrical equipment K; and its normally closed switch is serially connected with between storage battery E and constant current triode Q4; can be relay K serial connection current-limiting resistance R13 according to actual service condition; like this when DC power supply when for storage battery E, charging; the normally closed switch of relay K will disconnect, and storage battery E output is opened circuit, and has effectively protected the LED load.
What need to describe is, can be according to the number according to needing to increase the LED load, and corresponding increase drives triode, constant current resistance and divider resistance and drive the work of constant current triode Q4, and then provide operating current for the LED load of increase.
The above is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.

Claims (6)

1. a full-automatic high-power LED lamp power circuit, is characterized in that, comprises the LED load supplying circuit of storage battery, charging circuit, the described storage battery of connection;
The charging control circuit that described charging circuit comprises DC power supply and connects described DC power supply, described charging control circuit has the first switch element and second switch unit, described storage battery connects described DC power supply by described the first switch element, described second switch unit has the voltage control circuit that is connected on described storage battery, when the voltage of described storage battery arrived charging upper limit voltage, described second switch unit opened circuit described the first switch element;
Described LED load supplying circuit has constant current triode, drives triode, constant current resistance, the described constant current resistance of LED load serial connection, constant current triode are connected to described storage battery two ends, described constant current triode also is connected to start-up capacitance, on described constant current resistance and be connected to divider resistance, described divider resistance provides bias voltage for described driving triode, and described driving triode makes described constant current triode conducting.
2. full-automatic high-power LED lamp power circuit according to claim 1, it is characterized in that, described the first switch element comprises the first triode, the second triode, described the first triode is serially connected with between described storage battery and DC power supply, its base stage controls conducting by described the second triode, the base stage of described the second triode is connected to described DC power supply anode by pull-up resistor, and emitting stage connects described DC power supply negative terminal.
3. full-automatic high-power LED lamp power circuit according to claim 2, it is characterized in that, described second switch unit comprises the 3rd triode, its collector electrode is electrically connected to the base stage of described the second triode, emitter connects described DC power supply negative terminal, base stage connects the anode of described storage battery by voltage stabilizing didoe, and by pull down resistor, connects described DC power supply negative terminal.
4. be connected in series the anti-diode of filling with between full-automatic high-power LED lamp power circuit according to claim 2, described storage battery and described the first triode.
5. full-automatic high-power LED lamp power circuit according to claim 1, is characterized in that, also comprises the relay that is connected on described DC power supply two ends, and the normally closed switch of described relay is serially connected with on the output of described storage battery.
6. full-automatic high-power LED lamp power circuit according to claim 1, is characterized in that, described DC power supply is for to carry out transformation rectification out-put supply by transformer and rectifier bridge to civil power.
CN2013203614608U 2013-06-13 2013-06-13 Full-automatic large-power LED lamp power supply circuit Expired - Fee Related CN203289174U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203614608U CN203289174U (en) 2013-06-13 2013-06-13 Full-automatic large-power LED lamp power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203614608U CN203289174U (en) 2013-06-13 2013-06-13 Full-automatic large-power LED lamp power supply circuit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104797031A (en) * 2015-04-28 2015-07-22 卫斌鹏 LED booster constant-current driving circuit
CN106936312A (en) * 2015-12-29 2017-07-07 重庆宁来科贸有限公司 A kind of standby accurately power source design

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104797031A (en) * 2015-04-28 2015-07-22 卫斌鹏 LED booster constant-current driving circuit
CN106936312A (en) * 2015-12-29 2017-07-07 重庆宁来科贸有限公司 A kind of standby accurately power source design
CN106936312B (en) * 2015-12-29 2019-03-15 重庆宁来科贸有限公司 A kind of spare power source method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131113

Termination date: 20150613

EXPY Termination of patent right or utility model