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الرئيسية > معلومات الصناعة > How does the power supply manufacturer produce qualified outdoor lighting driver power supply?
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How does the power supply manufacturer produce qualified outdoor lighting driver power supply?

2019-06-18
The outdoor lighting application environment has natural phenomena such as thunderstorm climate, summer high temperature, and winter low temperature, and is inevitable. Compared with the indoor environment, the reliability requirements for power supply drive are more strict. LED lighting technology has developed to today, LED light The overall performance of the module has been quite stable. The key to directly affecting the service life of the LED is the reliability of the power supply. There are data indicating that more than 70% of the LED outdoor lighting faults are caused by power failure or instability.
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For outdoor lighting application companies, the quality of power supply on the market is uneven and the price is very different. How to identify the quality of power supply is not easy. In fact, at present, the unilateral price of power supply is no longer the decisive factor for users to choose the power supply. The maintenance cost of outdoor lighting will directly affect the profit margin of lighting projects. Users will also consider the quality and performance of power supply. Reliability, the company's comprehensive service capabilities and other factors.
To be a good power source, from the R & D design, process engineering, material selection and storage, to refined production, quality control and many other aspects to the lighting customer to read out the power supply is a systematic project, which requires the development of many years of technical experience It also needs to be refined with the support of the manufacturing system. The purpose is to help the lighting customers to have a clear screening of high-quality good power when selecting the power supply.
Good power supply should have perfect protection ability
Lightning protection. As we all know, the outdoor lightning strike climate is very harmful to the power supply. There are usually several types of direct lightning, conductive lightning, and induced lightning. Inductive lightning is the most common, and the power supply is also the most damaged, often producing 4KV or higher. Good power supply should have better lightning protection capability, and follow the relevant national design standards (GB/T 17626.5, which is equivalent to IEC-61000-4-5, specifies differential mode compression 2KV, common mode compression 4KV). Of course, in addition to the integrated power supply lightning protection design, some special lightning strike dense areas, lighting users can also refer to IEC61643-1 or EN61643-11 and other related standards, add independent lightning arrester at the front end of the lighting transmission, the effect will be better .
High temperature and cold resistance. In some areas, the outside temperature can be as high as 50 ° C, and the lowest is often as low as minus 30 ° C. This requires the power supply to have a wide range of operating ring temperatures, working in a wide range of -40 ° C to +70 ° C to ensure reliable products. The performance is stable.
Waterproof ability. Although the power supply of the market is rainproof and waterproof, the protection capability is very different. The protection level of rain protection only requires IP65, while the protection level of waterproof requires IP67, which means it can be safely used even if the power supply is immersed in water. It can avoid the influence of humid moisture, salt spray, etc. on the internal PCB circuit and components of the power supply. The power supply needs to adopt the potting process, which fully achieves the IP67 protection level to prevent the power failure caused by the moisture or salt spray breathing effect. At the same time, the heat conduction performance of the special potting material is also excellent, which can help the power supply to dissipate heat, and the potting process is increased. Cost, but the use of the product is reliable, can eliminate the potential quality hazards.
In addition, over-temperature protection, over-voltage protection, under-voltage protection, and short-circuit protection of the power supply are also essential.
Good power supply should have fine manufacturing system support
Power recall events or mass quality problems in the market, due to design defects, are a small number of reasons, most of which are caused by inadequate manufacturing systems and insufficient production control experience. Fine manufacturing systems generally include six major control platforms, including technology research and development, process engineering, procurement control system, storage system, automatic flow production, and quality control. Often the most prone to problems are procurement, process engineering and quality control.
There are nearly 200 BOM raw materials for outdoor power products. There are a lot of fake materials, defective materials and expired materials on the market. It is often impossible to distinguish in mass production. As long as one device is unstable, it will cause the risk of power failure. How to ensure the quality of raw material procurement Integrity, not only the scientific control of the procurement platform, but also the accumulation of long-term experience with suppliers. The high-quality supply resources will ensure that the mixing of fake materials, defective materials and expired materials will be directly eliminated in the early stage of production introduction, so as to prevent them in advance. In addition, the storage of certain components can not be ignored, improper storage environment can easily lead to oxidative deterioration of components, a constant temperature and humidity warehouse is needed to prevent deterioration of the device.
The product is indispensable in the process engineering process before batch conversion. Its function is to verify the prenatal technology of the product through trial production, and to develop a rigorous product production process through trial production to ensure the effectiveness and accuracy of subsequent mass production. Sex. Process engineering needs to be equipped with corresponding testing equipment. Many power companies often save this cost in order to save costs, which will bury hidden dangers in the quality of subsequent mass production. Before the mass production of each power supply, the engineering department must strictly verify the specifications and performance of the R&D design in strict accordance with the regulations. At the same time, it is necessary to formulate a rigorous production operation process.
Quality control is the core control link of product quality assurance. Generally, power supply companies will have quality control, but the quality control system is sound but different, and it always checks (IQC), online inspection (IPQC, LQC), and goes to the factory inspection ( OQC) A total of more than a dozen processes, with reference to the latest international inspection standards, establish a complete set of high-standard quality control system, product quality has data traceability.
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