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

An LED-driven, high-power technology, applied in the direction of electric light source, light source, electric lamp circuit layout, etc., can solve the problems of high power, explosion, etc., and achieve the effect of long service life, convenient carrying and simple structure
CN102595700BInactive Publication Date: 2015-01-21CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2015-01-21
Estimated Expiration
Not applicable · inactive patent

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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.
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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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