Intrinsic safety LED (Light Emitting Diode) driving power source with high power for mines

A LED driving and high-power technology, which is applied in the direction of electric light source, light source, lamp circuit layout, etc., can solve the problems of high power and explosion, and achieve the effects of long service life, convenient portability and simple structure

Inactive Publication Date: 2012-07-18
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an intrinsically safe high-power LED drive power supply for mining, to solve the problem that the current LED drive power supply is used on the ground and has high power, and it is easy to cause explosions in coal mines

Method used

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  • Intrinsic safety LED (Light Emitting Diode) driving power source with high power for mines
  • Intrinsic safety LED (Light Emitting Diode) driving power source with high power for mines
  • Intrinsic safety LED (Light Emitting Diode) driving power source with high power for mines

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Embodiment 1

[0028] Embodiment 1: The intrinsically safe high-power LED drive power supply includes a high-frequency flyback converter U1, a rectifier circuit U2, an output filter circuit U3, a feedback circuit U4, and a PWM controller U5. The output terminal of the high-frequency flyback converter U1 is connected to the rectifier The circuit U2 is connected, the output terminal of the rectifier circuit U2 is connected with the output filter circuit U3, the output terminal of the output filter circuit U3 is the circuit output terminal, and is connected with the input terminal of the feedback circuit U4 at the same time, and the feedback circuit U4 is connected with the high frequency flyback converter U1 connection.

[0029] The control method of the drive power supply and the value method of the device:

[0030] Control method: In order to achieve constant current output, the rectifier circuit uses diodes for rectification; the transformer in the high-frequency flyback converter has the e...

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Abstract

The invention relates to an intrinsic safety LED (Light Emitting Diode) driving power source with high power for mines and belongs to a driving power source for LED lamps. The intrinsic safety LED driving power source with high power comprises a high frequency flyback converter, a rectifying circuit, an output filtering circuit, a feedback circuit and a PWM (Pulse Width Modulation) controller, wherein an output end of the high frequency flyback converter is connected with the rectifying circuit; the output end of the rectifying circuit is connected with the output filtering circuit; the output end of the output filtering circuit is a circuit output end and simultaneously is connected with an input end of the feedback circuit; and the feedback circuit is connected with the high frequency flyback converter through the PWM controller. Compared with the prior art, the intrinsic safety LED driving power source has the advantages that the power source is always kept constant under the condition of changing a load or input voltage and output current, and when the short-circuiting happens in the output, the released energy is below the minimum ignition energy value of a gas, thereby the explosion is avoided; and the intrinsic safety LED driving power source has simple structure and long service life, is energy-saving and environment-friendly, is convenient to carry and is suitable for hazardous areas such as coal mines, petrochemical industries and the like.

Description

technical field [0001] The invention relates to an LED lamp driving power supply, in particular to a mining intrinsically safe high-power LED driving power supply. Background technique [0002] Coal mine lighting has high requirements for explosion-proof lighting of lamps: to ensure a good lighting level, but also to consider the safety and explosion-proof of the working environment. Mine roadways still use incandescent lamps as the main light source so far, which has many disadvantages such as low illumination and short life; the lighting system cannot meet the needs of job site lighting and emergency lighting for sudden accidents; many mines use old-style miner's lamps, which are heavy and difficult to carry shorter. LED lamps have the advantages of long service life, green lighting, high luminous efficiency, safety and reliability, and significant power saving. Therefore, LED lamps have become a better choice for mine lighting. At present, the LED drive power supply is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 于月森伍小杰戴鹏戚文燕周娟谢冬莹张望李世光
Owner CHINA UNIV OF MINING & TECH
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