[Source: "High-tech LED - Technology and Applications" June issue / Long Zonghui]
"The lack of LED power supply standards is most directly reflected in the market scale. LED power companies have to form alliances with lighting companies." Duan Weijun, vice president of Shenzhen Hangjia Chiyuan Electric Co., Ltd. (hereinafter referred to as "Hangjia"), recently accepted "High" In the exclusive interview with LED.
In recent years, LED power supply is recognized as the short board of the industry. Many LED lighting manufacturers shouted "life expectancy of 50,000 hours", and the result is that the power supply will be "staying in the end" for three months. At the same time, due to the unsalable sales of LED lamps with poor quality, the development cost of power supplies often fluctuates. This is precisely because of the lack of standards, the power supply is too dependent on the chain reaction caused by the lamps.
Duan Weijun said that Huntkey started its research and development with IT power and power electronic systems, and now it is in the LED driver power supply and lighting market. Through three years of research and development, the company has completed the development of Led Display power supply, LED lighting power supply and LED fluorescent lamp, bulb lamp, spotlight and downlight.
Life standardization testing is the key
In fact, the entire power industry began to pay attention to life from 30 years ago, but the LED power life test standard has not been introduced.
In these years, LED power supply manufacturers "Great Leap Forward" type of life test data, we can not help but ask, where does the 50,000 hours of life test data come from? “The power life test standards and calculation formulas have always existed, but few companies actually follow them.†Duan Weijun said.
Duan Weijun introduced that the test conditions such as temperature, current and voltage are very important, followed by the detection range. At present, the industry focuses on the detection of capacitors while ignoring optocouplers. In terms of testing time, international and manufacturers have their own standards, according to international practice for at least 3,000 hours. In terms of test temperature, it does not only stay at one temperature point, but tests every ten minutes according to changes in temperature. Only the report issued in this way can truly reflect the situation of the power supply. In combination with the power supply life estimated by the international standard company, the life of the power supply can be truly reflected.
From the general situation of the current industry, there are very few companies that truly standardize testing, which is why the domestic LED power supply companies have difficulty in standardizing testing in Europe, America and Taiwan.
"With the gradual regulation of the LED industry, the development strategy of expanding the market with price wars will eventually become history, and the brand war is about to start." Duan Weijun stressed that quality is not shouted out by advertising, and requires more performance parameters and test data. To support.
From the perspective of research and development, LED lamps have higher and higher requirements for power conversion efficiency.
The international PF value is limited to 75w. It has not been applied to the LED power supply field before, but now it has clear requirements. From the basic requirements of outdoor lighting waterproofing, as long as IP65 waterproof and dustproof level can be achieved, IP67 and IP68 are common nowadays. Especially in the extremely cold places, due to the snow in the winter lamps, the snow melts into the outside of the lamps after the lamps are heated. Finally, the lamps are equivalent to being soaked in the water, and the requirements for waterproofing are more stringent. In order to save costs, many companies install directly on the PCB. Due to the different shrinkage of the metal glue, and the aluminum casing, the colloid shrinks at minus 40°, which directly causes the device to leave the main board, or the colloid produces a strong crack. More serious is the direct separation from the housing.
LED power supply needs to be standardized
"Now, there is no uniform standard for domestic LED lamps, and the current and voltage are different. As a result, power supply manufacturers are also unable to mass-produce." Duan Weijun said that especially the personalized products, which ultimately lead to the production costs of power supply manufacturers. Extremely high.
If the use of lamps is not large or forced to delist, LED power supply manufacturers will suffer heavy losses. This is why LED power supply manufacturers have been developing versatile power supplies for years. The reporter learned from many power supply manufacturers such as Maoshuo, Infineon, Jingchen, Ruigu, etc. Due to the lack of industry standards, the driving power supplies of various manufacturers are not only the port, voltage, current, but also the size, but the current industry is not In the case of prosperity, even if the micro-single of losing money is vying for the blood. In the long run, this is not conducive to the development of the industry. Although the state has tried to formulate relevant policies, it has often become obsolete without being introduced.
(unfinished)
For more information, please refer to the June issue of "High-tech LED-Technology and Applications" magazine.
"The lack of LED power supply standards is most directly reflected in the market scale. LED power companies have to form alliances with lighting companies." Duan Weijun, vice president of Shenzhen Hangjia Chiyuan Electric Co., Ltd. (hereinafter referred to as "Hangjia"), recently accepted "High" In the exclusive interview with LED.
In recent years, LED power supply is recognized as the short board of the industry. Many LED lighting manufacturers shouted "life expectancy of 50,000 hours", and the result is that the power supply will be "staying in the end" for three months. At the same time, due to the unsalable sales of LED lamps with poor quality, the development cost of power supplies often fluctuates. This is precisely because of the lack of standards, the power supply is too dependent on the chain reaction caused by the lamps.
Duan Weijun said that Huntkey started its research and development with IT power and power electronic systems, and now it is in the LED driver power supply and lighting market. Through three years of research and development, the company has completed the development of Led Display power supply, LED lighting power supply and LED fluorescent lamp, bulb lamp, spotlight and downlight.
Life standardization testing is the key
In fact, the entire power industry began to pay attention to life from 30 years ago, but the LED power life test standard has not been introduced.
In these years, LED power supply manufacturers "Great Leap Forward" type of life test data, we can not help but ask, where does the 50,000 hours of life test data come from? “The power life test standards and calculation formulas have always existed, but few companies actually follow them.†Duan Weijun said.
Duan Weijun introduced that the test conditions such as temperature, current and voltage are very important, followed by the detection range. At present, the industry focuses on the detection of capacitors while ignoring optocouplers. In terms of testing time, international and manufacturers have their own standards, according to international practice for at least 3,000 hours. In terms of test temperature, it does not only stay at one temperature point, but tests every ten minutes according to changes in temperature. Only the report issued in this way can truly reflect the situation of the power supply. In combination with the power supply life estimated by the international standard company, the life of the power supply can be truly reflected.
From the general situation of the current industry, there are very few companies that truly standardize testing, which is why the domestic LED power supply companies have difficulty in standardizing testing in Europe, America and Taiwan.
"With the gradual regulation of the LED industry, the development strategy of expanding the market with price wars will eventually become history, and the brand war is about to start." Duan Weijun stressed that quality is not shouted out by advertising, and requires more performance parameters and test data. To support.
From the perspective of research and development, LED lamps have higher and higher requirements for power conversion efficiency.
The international PF value is limited to 75w. It has not been applied to the LED power supply field before, but now it has clear requirements. From the basic requirements of outdoor lighting waterproofing, as long as IP65 waterproof and dustproof level can be achieved, IP67 and IP68 are common nowadays. Especially in the extremely cold places, due to the snow in the winter lamps, the snow melts into the outside of the lamps after the lamps are heated. Finally, the lamps are equivalent to being soaked in the water, and the requirements for waterproofing are more stringent. In order to save costs, many companies install directly on the PCB. Due to the different shrinkage of the metal glue, and the aluminum casing, the colloid shrinks at minus 40°, which directly causes the device to leave the main board, or the colloid produces a strong crack. More serious is the direct separation from the housing.
LED power supply needs to be standardized
"Now, there is no uniform standard for domestic LED lamps, and the current and voltage are different. As a result, power supply manufacturers are also unable to mass-produce." Duan Weijun said that especially the personalized products, which ultimately lead to the production costs of power supply manufacturers. Extremely high.
If the use of lamps is not large or forced to delist, LED power supply manufacturers will suffer heavy losses. This is why LED power supply manufacturers have been developing versatile power supplies for years. The reporter learned from many power supply manufacturers such as Maoshuo, Infineon, Jingchen, Ruigu, etc. Due to the lack of industry standards, the driving power supplies of various manufacturers are not only the port, voltage, current, but also the size, but the current industry is not In the case of prosperity, even if the micro-single of losing money is vying for the blood. In the long run, this is not conducive to the development of the industry. Although the state has tried to formulate relevant policies, it has often become obsolete without being introduced.
(unfinished)
For more information, please refer to the June issue of "High-tech LED-Technology and Applications" magazine.
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