CN212851119U - LED lighting control circuit - Google Patents

LED lighting control circuit Download PDF

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Publication number
CN212851119U
CN212851119U CN202022188560.8U CN202022188560U CN212851119U CN 212851119 U CN212851119 U CN 212851119U CN 202022188560 U CN202022188560 U CN 202022188560U CN 212851119 U CN212851119 U CN 212851119U
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led
power supply
triode
circuit
parallel
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杨磊
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Shaanxi Langsheng Intelligent Lighting Technology Co ltd
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Shaanxi Langsheng Intelligent Lighting Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

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Abstract

The utility model discloses a LED lighting control circuit, which comprises an LED lamp power supply system connected with an input protection circuit and an LED lamp module with a constant current circuit; the input protection circuit comprises an alternating current distribution switch and a lightning protection module connected with the alternating current distribution switch in parallel; the power supply system of the LED lamp comprises a plurality of rectifier modules connected in parallel; one end of the rectification module is connected with the alternating current distribution switch, and the other end of the rectification module is connected with the lightning protection module; the LED lamp module with the constant current circuit comprises a plurality of LED branches connected in parallel, and the rectifier module corresponds to the LED branches; each LED branch is connected with a constant current circuit in series, one end of each LED branch is connected with the positive electrode of a power supply, and the other end of each LED branch is connected with the negative electrode of the power supply through the constant current circuit; the LED branch comprises a plurality of LED lamps which are connected in series. The utility model provides a current LED lamps and lanterns with high costs, the reliability is low and lamps and lanterns maintenance cost scheduling problem, satisfied the demand of intelligent lighting.

Description

LED lighting control circuit
Technical Field
The utility model belongs to the technical field of the LED illumination, a LED lighting control circuit is related to.
Background
The Light Emitting Diode (LED) solid light source has the advantages of high luminous efficiency, environmental protection, long service life and the like, and is known as a fifth generation lighting source. Because the LED lamp has high efficiency and good energy-saving effect, the LED lamp gradually replaces a white light lamp, and the LED lamp begins to mature. Theoretically, the service life of the LED is over 10 ten thousand hours, but in the practical application process, because the design of the LED power supply is different or the driving mode is not properly selected, the current flowing through the LED lamp in the use process of the LED lamp is unstable, and the LED lamp is extremely easy to be damaged. To solve this problem, it is conceivable to add a constant current driving unit to the circuit. In the prior art, a constant current driving unit is generally replaced by a constant current chip, however, the constant current chip is generally a type which can only output fixed current, and after LED lamps with different powers are replaced, the required driving current changes, so that the common constant current chip cannot meet the requirements of the common constant current chip, and the flexibility is very low; therefore, people further design an adjustable constant current driving chip, but the adjustable constant current driving chip is expensive, and the use cost of people is increased invisibly; meanwhile, the constant current chip is adopted, only one effect of outputting fixed current can be achieved, the circuit protection effect is not actually achieved, if a plurality of groups of LED lamps are connected in parallel for use, one group of LED lamps are damaged, the branch circuit is short-circuited, the direct effect caused by the damage is the damage of the power supply, and meanwhile, potential safety hazards such as fire hazards are also generated. In summary, the prior art has many disadvantages and needs to be further improved and enhanced. Therefore, there is a need for an improvement of the existing LED lighting device to meet the requirement of intelligent lighting.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a LED lighting control circuit, solved current LED lamps and lanterns with high costs, the reliability is low and lamps and lanterns maintenance cost scheduling problem, satisfied the demand of intelligent lighting.
The utility model discloses a realize through following technical scheme:
an LED illumination control circuit comprises an LED lamp power supply system connected with an input protection circuit and an LED lamp module with a constant current circuit;
the input protection circuit comprises an alternating current distribution switch connected with a power input end, and two ends of the alternating current distribution switch are connected with a lightning protection module in parallel;
the power supply system of the LED lamp comprises a plurality of rectifier modules connected in parallel; one end of the rectification module is connected with the power supply input end through the alternating current distribution switch, and the other end of the rectification module is connected with the lightning protection module;
the LED lamp module with the constant current circuit comprises a plurality of LED branches connected in parallel, and the rectifier module corresponds to the LED branches; each LED branch is connected with a constant current circuit in series, one end of each LED branch is connected with the positive electrode of a power supply, and the other end of each LED branch is connected with the negative electrode of the power supply through the constant current circuit; the LED branch comprises a plurality of LED lamps which are connected in series;
the constant current circuit comprises an MOS tube V1 connected with the output end of the LED branch, a resistor R2 is arranged between the grid of the MOS tube V1 and the output end of the LED branch in parallel, and a triode V2 and a triode V3 are arranged between the grid and the source of the MOS tube V1 in parallel; the drain electrode of the MOS tube V1 is connected with the output end of the LED branch circuit, the source electrode of the MOS tube V1 is connected with the base electrode of the triode V3, and the source electrode of the MOS tube V1 is also connected with the negative electrode of the power supply through the resistor R4;
the collector of the triode V2 and the collector of the triode V3 are both connected with the grid of the MOS tube V1, and a resistor R1 is arranged in parallel between the base of the triode V2 and the output end of the LED branch circuit; the emitter of the triode V2 and the emitter of the triode V3 are both connected with the negative electrode of the power supply; the base of the transistor V2 is connected to the negative terminal of the power supply through a resistor R3.
Further, the triode V2 and the triode V3 are both NPN triodes.
Further, the constant current circuit further comprises an MOS tube V4 connected with the output end of the LED branch, a resistor R6 is connected in parallel between the grid of the MOS tube V4 and the output end of the LED branch, and a triode V5 and a triode V6 are connected in parallel between the grid and the source of the MOS tube V4; the drain electrode of the MOS tube V4 is connected with the output end of the LED branch circuit, the source electrode of the MOS tube V4 is connected with the base electrode of the triode V6, and the source electrode of the MOS tube V4 is also connected with the negative electrode of the power supply through the resistor R8;
the collector of the triode V5 and the collector of the triode V6 are both connected with the grid of the MOS tube V4, and a resistor R5 is arranged in parallel between the base of the triode V5 and the output end of the LED branch circuit; the emitter of the triode V5 and the emitter of the triode V6 are both connected with the negative electrode of the power supply; the base of the transistor V5 is connected to the negative terminal of the power supply through a resistor R7.
Further, the triode V5 and the triode V6 are both NPN triodes.
Furthermore, the number of the LED branches is equal to that of the constant current circuits.
Furthermore, the lightning protection module comprises a lightning protection device which is respectively connected with the lightning protection alarm and the lightning protection air-out alarm.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a LED lighting control circuit, which comprises an LED lamp power supply system connected with an input protection circuit and an LED lamp module with a constant current circuit; the input protection circuit comprises a lightning protection module connected with the alternating current distribution switch in parallel; the power supply system of the LED lamp comprises a plurality of rectifier modules connected in parallel; one end of the rectification module is connected with the alternating current distribution switch, and the other end of the rectification module is connected with the lightning protection module; the LED lamp module with the constant current circuit comprises a plurality of LED branches connected in parallel, and the rectifying module corresponds to the LED branches. The utility model comprises an LED lamp power supply system connected with an input protection circuit and an LED lamp module with a constant current circuit, wherein the LED lamp power supply system adopts an N +1 redundancy backup rectification power supply system to ensure the stability of power supply and ensure stable direct current output; the LED lamp does not need to be provided with an LED driving power supply independently, and can work stably only by a simple constant current circuit, so that the cost of the lamp is greatly reduced, and the modern intelligent lighting function is fully embodied; the invention solves the problems of high cost, low reliability, high lamp maintenance cost and the like of the existing LED lamp, and meets the requirement of intelligent illumination.
Drawings
Fig. 1 is a block diagram of an LED lighting control circuit according to the present invention;
fig. 2 is a working schematic diagram of the LED lighting control circuit of the present invention;
fig. 3 is a circuit diagram of the power supply system of the LED lamp of the present invention;
fig. 4 is a circuit diagram of the LED lamp module with the constant current circuit according to the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are provided for purposes of illustration and not limitation.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, an LED lighting control circuit includes an LED lamp power supply system connected to an input protection circuit and an LED lamp module with a constant current circuit;
the input protection circuit comprises an alternating current distribution switch connected with a power input end, and two ends of the alternating current distribution switch are connected with a lightning protection module in parallel;
the power supply system of the LED lamp comprises a plurality of rectifier modules connected in parallel; one end of the rectification module is connected with the power supply input end through the alternating current distribution switch, and the other end of the rectification module is connected with the lightning protection module;
the LED lamp module with the constant current circuit comprises a plurality of LED branches connected in parallel, and the rectifier module corresponds to the LED branches; each LED branch is connected with a constant current circuit in series, one end of each LED branch is connected with the positive electrode of a power supply, and the other end of each LED branch is connected with the negative electrode of the power supply through the constant current circuit; the LED branch comprises a plurality of LED lamps which are connected in series;
the constant current circuit comprises an MOS tube V1 connected with the output end of the LED branch, a resistor R2 is arranged between the grid of the MOS tube V1 and the output end of the LED branch in parallel, and a triode V2 and a triode V3 are arranged between the grid and the source of the MOS tube V1 in parallel; the drain electrode of the MOS tube V1 is connected with the output end of the LED branch circuit, the source electrode of the MOS tube V1 is connected with the base electrode of the triode V3, and the source electrode of the MOS tube V1 is also connected with the negative electrode of the power supply through the resistor R4;
the collector of the triode V2 and the collector of the triode V3 are both connected with the grid of the MOS tube V1, and a resistor R1 is arranged in parallel between the base of the triode V2 and the output end of the LED branch circuit; the emitter of the triode V2 and the emitter of the triode V3 are both connected with the negative electrode of the power supply; the base of the transistor V2 is connected to the negative terminal of the power supply through a resistor R3.
Fig. 2 is a working schematic diagram of the LED lighting control circuit of the present invention; the power input of the whole system is mains supply input, and single-phase 220V and three-phase 380V input are supported; the power input end is connected with the AC distribution switch and the lightning protection module, and is used as an input protection module of the whole system, so that the power supply stability of the whole system is ensured. Referring to fig. 3, the power supply system of the LED lighting control circuit is composed of standard rectifier modules; the number of the rectifier modules can be 1 or multiple, the rectifier modules are connected in parallel, the rectifier modules are communicated with each other, and in practical application, the rectifier modules are automatically equalized to support hot plugging; when one power supply fails or is taken down, other power supplies can automatically supplement current and automatically equalize current; the power supply output of the LED illumination control circuit is stable and adjustable direct-current voltage, and the LED illumination control circuit supplies power to the LED lamp module with the constant-current circuit.
Further, the triode V2 and the triode V3 are both NPN triodes.
Further, the constant current circuit further comprises an MOS tube V4 connected with the output end of the LED branch, a resistor R6 is connected in parallel between the grid of the MOS tube V4 and the output end of the LED branch, and a triode V5 and a triode V6 are connected in parallel between the grid and the source of the MOS tube V4; the drain electrode of the MOS tube V4 is connected with the output end of the LED branch circuit, the source electrode of the MOS tube V4 is connected with the base electrode of the triode V6, and the source electrode of the MOS tube V4 is also connected with the negative electrode of the power supply through the resistor R8;
the collector of the triode V5 and the collector of the triode V6 are both connected with the grid of the MOS tube V4, and a resistor R5 is arranged in parallel between the base of the triode V5 and the output end of the LED branch circuit; the emitter of the triode V5 and the emitter of the triode V6 are both connected with the negative electrode of the power supply; the base of the transistor V5 is connected to the negative terminal of the power supply through a resistor R7.
Further, the triode V5 and the triode V6 are both NPN triodes.
Furthermore, the number of the LED branches is equal to that of the constant current circuits.
Furthermore, the lightning protection module comprises a lightning protection device which is respectively connected with the lightning protection alarm and the lightning protection air-out alarm. Referring to fig. 3 specifically, the input protection circuit includes an ac power distribution switch and a lightning protection circuit, and provides the functions of input switch control and lightning surge signal prevention for the whole system; the power supply system of the LED lamp converts alternating current commercial power into stable and controllable direct current voltage; the power supply system adopts an N +1 redundancy backup mode to support hot plug; the rectifier modules are independently equalized, so that the reliability of a power supply system and the service life of the rectifier power supply module are ensured.
Fig. 4 is a circuit diagram of the LED lamp module with the constant current circuit according to the present invention; the LED lamp module with the constant current circuit is a direct current supply lamp specially designed for the system; the number of lamps and the service power of the lamps applied to the system are not limited, and the lamps and the service power can be flexibly selected according to the practical application of a client; the LED lamp module with the constant current circuit is powered by a rectifying module in the system; the voltage of the lamp is designed according to the design voltage of the system, and high-voltage power supply and low-voltage power supply can be selected; the LED lamps can be connected into a loop or multiple paths according to the situation of a user site; the LED lamp module with the constant current circuit is internally provided with the special constant current circuit, does not need a special LED driving power supply, has simple circuit and very small volume, and supports system dimming.
By the technical scheme, the utility model provides a LED lighting control circuit, which comprises an LED lamp power supply system connected with an input protection circuit and an LED lamp module with a constant current circuit; the input protection circuit comprises a lightning protection module connected with the alternating current distribution switch in parallel; the power supply system of the LED lamp comprises a plurality of rectifier modules connected in parallel; one end of the rectification module is connected with the alternating current distribution switch, and the other end of the rectification module is connected with the lightning protection module; the LED lamp module with the constant current circuit comprises a plurality of LED branches connected in parallel, and the rectifying module corresponds to the LED branches. The utility model comprises an LED lamp power supply system connected with an input protection circuit and an LED lamp module with a constant current circuit, wherein the LED lamp power supply system adopts an N +1 redundancy backup rectification power supply system to ensure the stability of power supply and ensure stable direct current output; the LED lamp does not need to be provided with an LED driving power supply independently, and can work stably only by a simple constant current circuit, so that the cost of the lamp is greatly reduced, and the modern intelligent lighting function is fully embodied; the invention solves the problems of high cost, low reliability, high lamp maintenance cost and the like of the existing LED lamp, and meets the requirement of intelligent illumination.
The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.

Claims (6)

1. An LED illumination control circuit is characterized by comprising an LED lamp power supply system connected with an input protection circuit and an LED lamp module with a constant current circuit;
the input protection circuit comprises an alternating current distribution switch connected with a power input end, and two ends of the alternating current distribution switch are connected with a lightning protection module in parallel;
the power supply system of the LED lamp comprises a plurality of rectifier modules connected in parallel; one end of the rectification module is connected with the power supply input end through the alternating current distribution switch, and the other end of the rectification module is connected with the lightning protection module;
the LED lamp module with the constant current circuit comprises a plurality of LED branches connected in parallel, and the rectifier module corresponds to the LED branches; each LED branch is connected with a constant current circuit in series, one end of each LED branch is connected with the positive electrode of a power supply, and the other end of each LED branch is connected with the negative electrode of the power supply through the constant current circuit; the LED branch comprises a plurality of LED lamps which are connected in series;
the constant current circuit comprises an MOS tube V1 connected with the output end of the LED branch, a resistor R2 is arranged between the grid of the MOS tube V1 and the output end of the LED branch in parallel, and a triode V2 and a triode V3 are arranged between the grid and the source of the MOS tube V1 in parallel; the drain electrode of the MOS tube V1 is connected with the output end of the LED branch circuit, the source electrode of the MOS tube V1 is connected with the base electrode of the triode V3, and the source electrode of the MOS tube V1 is also connected with the negative electrode of the power supply through the resistor R4;
the collector of the triode V2 and the collector of the triode V3 are both connected with the grid of the MOS tube V1, and a resistor R1 is arranged in parallel between the base of the triode V2 and the output end of the LED branch circuit; the emitter of the triode V2 and the emitter of the triode V3 are both connected with the negative electrode of the power supply; the base of the transistor V2 is connected to the negative terminal of the power supply through a resistor R3.
2. The LED lighting control circuit of claim 1, wherein transistor V2 and transistor V3 are NPN transistors.
3. The LED lighting control circuit of claim 1, wherein the constant current circuit further comprises a MOS transistor V4 connected to the output terminal of the LED branch, a resistor R6 is connected in parallel between the gate of the MOS transistor V4 and the output terminal of the LED branch, and a transistor V5 and a transistor V6 are connected in parallel between the gate and the source of the MOS transistor V4; the drain electrode of the MOS tube V4 is connected with the output end of the LED branch circuit, the source electrode of the MOS tube V4 is connected with the base electrode of the triode V6, and the source electrode of the MOS tube V4 is also connected with the negative electrode of the power supply through the resistor R8;
the collector of the triode V5 and the collector of the triode V6 are both connected with the grid of the MOS tube V4, and a resistor R5 is arranged in parallel between the base of the triode V5 and the output end of the LED branch circuit; the emitter of the triode V5 and the emitter of the triode V6 are both connected with the negative electrode of the power supply; the base of the transistor V5 is connected to the negative terminal of the power supply through a resistor R7.
4. The LED lighting control circuit of claim 3, wherein transistor V5 and transistor V6 are NPN transistors.
5. The LED lighting control circuit of claim 1, wherein the number of the LED branches is equal to the number of the constant current circuits.
6. The LED lighting control circuit of claim 1, wherein the lightning protection module comprises a lightning protection device, and the lightning protection device is connected to the lightning protection alarm and the lightning protection air-break alarm, respectively.
CN202022188560.8U 2020-09-29 2020-09-29 LED lighting control circuit Active CN212851119U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022188560.8U CN212851119U (en) 2020-09-29 2020-09-29 LED lighting control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022188560.8U CN212851119U (en) 2020-09-29 2020-09-29 LED lighting control circuit

Publications (1)

Publication Number Publication Date
CN212851119U true CN212851119U (en) 2021-03-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022188560.8U Active CN212851119U (en) 2020-09-29 2020-09-29 LED lighting control circuit

Country Status (1)

Country Link
CN (1) CN212851119U (en)

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