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A few days ago, the reporter received a call from a friend in the industry and learned that there is a leading power supply technology in the country, but no funds are put into production. I hope the reporter can help. Recently, there have been a lot of news about street lamp damage. For example, the street lights in Guangzhou Baiyun Lake Park are often bad, the street lights in Jinsha Street in Wucheng District of Jinhua City are damaged by half, and the street lamps in Shenzhen Lotus Park are damaged. The main reason is the switching power supply technology adopted by domestic enterprises. turn off.
At the entrance of Shenzhen Vocational and Information Technology College, an elderly man who is over half a year is coming to the reporter. This person is Ding Depei.
Experience pain
What reporters are more interested in is why this technology has been around for so long and the industry knows very little, even without applying for a patent.
In February 2008, Ding Depei received a grant of 100,000 yuan from Shenzhen Nanshan Science and Technology Bureau and continued to develop driving power. In 2009, the funds were facing exhaustion. In November, he hoped to participate in the high-tech fair with the last lining. At the meeting, he met Jiang Yuanzhong (a pseudonym) and Chu Lanmeng (a pseudonym) of a decoration company. After that, they became the best friends. .
Ding Depei hopes to find a partner of integrity through the high-tech platform, so that this technology is accepted by enterprises that truly understand LED. 
[Source: "Engineering LED- lighting market," the December issue of Reporter / Zhang Geng]
At present, domestic LED companies are very troublesome to solve the problem of LED street lamp damage, and maintenance costs are not a small expense. If there is a power drive technology that can solve this problem in China, it will be very helpful to the industry.
Leading power technology
When talking about this technology, Ding Depei’s eyes were firm and full of pride. He said, "The main core technology of power supply and luminaire is temperature rise. The working temperature of silicon crystal LED is 75 °C. At present, the switching power supply is 37.5 °C due to temperature rise, the ambient temperature is 30 °C, and the temperature is 142-150 °C. The crystal temperature of the power supply and the lamp is extremely high. The temperature of the outer casing is 65-80 ° C. It can be seen that the temperature rise and the performance are incompatible, resulting in poor product reliability."
The power conversion technology developed by Ding Depei uses a variable current method to deliver 25% of the current to the LED when the voltage is constant. The temperature of the LED is only 18.25 ° C, the thermal deposition is 9.37 ° C, and the ambient temperature is 30 ° C. The total crystal temperature does not exceed At 58 ° C, the lamp body temperature of the technology power box does not exceed 45 ° C. The low operating temperature solves the key problem of LED aging due to high temperature, light decay and damage.
Take a street as an example, the same configuration of LED street lights, the domestic street lamp wattage is basically 250W, but Ding Depei's street lamp wattage is only 60W, the reason is that Ding Depei's power technology makes the street lamp use wattage drop significantly, this is a kind Technical breakthrough.
Through in-depth understanding, this is related to Ding Depei's personality and experience. In the early days of reform and opening up, Ding Depei began to study fluorescent lamps and driving power technology. In 1993, he developed fluorescent lamp technology. In 1994, Anhui Lu'an Science and Technology Commission issued a document to establish Lu'an Huanyu Electric Light Source Research Institute. Ding Depei was appointed as the director; afterwards, through the support of the government, the development of high-pressure gas discharge lamps and driving power sources began. Every time there was financial difficulty, all the friends and relatives of Lu'an City funded the research and development. In 2005, the power supply was successfully developed, but the LED at that time. The technology is still immature, and LED product quality problems often occur. In 2005, LED was supported by the Shenzhen Municipal Government as a high-tech. Ding Depei hoped that this technology could be supported by the Shenzhen Municipal Government, so the family moved to Shenzhen.
In October 2005, due to the exhaustion of funds, he went all out to participate in the Expo. Hard work pays off. At the Expo, Ding Depei met Dr. Chen Molin (pseudonym) of Tsinghua University. Chen Mooli believes that this technology has great potential for development and is willing to cooperate with Ding Depei to develop power drive technology.
In 2007, the first LED lamp with its own driving power was successfully developed, which made Ding Depei and Chen Mo Li excited. However, the shortage of funds that followed led to a contradiction between the two in the future development model. The two had asked for help from the Science and Technology Bureau of Shenzhen Nanshan District Government. After half a year, the Nanshan District Science and Technology Bureau was willing to fund this technology for free to continue research and development; but Chen Mouli believed that this information was not reliable, so he wanted to put the principle and production process of this technology. Drawings, etc. are organized into reports for transfer.
They have contacted enterprises in Shanghai, Henan, Guangzhou and other places. Among them, a Guangzhou company is willing to invest 50 million yuan to cooperate with fluorescent lamps and high-pressure gas discharge lamps. Afterwards, Ding Depei refused because of some details in the cooperation. At that time, LED gold rushed across the country, from the government to the enterprise to the private sector to spur the LED whirlwind, making people from all walks of life have turned to LED. Because Ding Depei insisted that technology was not transferred, Ding Chen finally terminated cooperation at the end of 2007.
After so many years of business experience, Ding Depei has become more pragmatic and his personality has been praised by friends around him. Among them, Huang Ting, chief engineer of Shenzhen Keyuan Group, said that Ding Depei is a good old man. In the opinion of the reporter, Ding Depei's pragmatic, sincere, stubborn and affective personality has given him a certain personality charm, so he can get the top-notch technology research and development through the free support of friends, but he does not have the ability to expand.
Isolated three years
Through Jiang Yuanzhong's recommendation, he came into contact with a company that is willing to provide funding. However, this company does not have a long-term strategic plan. Ding Depei can continue to develop driving power technology through the company, but it is not allowed to leak technology and is not allowed to participate in any exhibition. Therefore, this technology has been isolated from the outside world for three years.
Now that the two sides have parted ways, Ding Depei resolutely refuses to let reporters mention the full name of the company because of personal feelings. Ding Depei said that the technology is now mature and can be applied to the production of LED street lights, LED tunnel lights, LED downlights and LED grille lights.
Introduction to technical advantages:
1. Driver loss is less than 1%;
2. The power efficiency is increased by more than 3 times;
3. The LED light board is 80°C lower than the switching power supply chip;
4. The aging of the chip is improved, which is more than 10 times that of the switching power supply;
5. 60% energy saving than the switching power supply LED lamp;
6. The lamp and the drive truly realize the light parameters of the electrical parameters of 100,000 hours;
7. High energy saving, high reliability, low maintenance, low cost, and the best comprehensive benefits;
8. A wide range of applications, including: electric car chargers, refrigerators, air conditioners, washing machines, electric welders, industrial motors, once used in the world to save 50%.
Introduction to technical advantages:
1. Driver loss is less than 1%;
2. The power efficiency is increased by more than 3 times;
3. The LED light board is 80°C lower than the switching power supply chip;
4. The aging of the chip is improved, which is more than 10 times that of the switching power supply;
5. 60% energy saving than the switching power supply LED lamp;
6. The lamp and the drive truly realize the light parameters of the electrical parameters of 100,000 hours;
7. High energy saving, high reliability, low maintenance, low cost, and the best comprehensive benefits;
8. A wide range of applications, including: electric car chargers, refrigerators, air conditioners, washing machines, electric welders, industrial motors, once used in the world to save 50%.
Ding Depei hopes to find a partner of integrity through the high-tech platform, so that this technology is accepted by enterprises that truly understand LED. Power-driven breakthrough technology A few days ago, the reporter received a call from a friend in the industry and learned that there is a leading power supply technology in China, but no funds are put into production. I hope the reporter can help. Recently, there have been a lot of news about street lamp damage. For example, the street lights in Guangzhou Baiyun Lake Park are often bad, the street lights in Jinsha Street in Wucheng District of Jinhua City are damaged by half, and the street lamps in Shenzhen Lotus Park are damaged. The main reason is the switching power supply technology adopted by domestic enterprises. turn off.
At present, domestic LED companies are very troublesome to solve the problem of LED street lamp damage, and maintenance costs are not a small expense. If there is a power drive technology that can solve this problem in China, it will be very helpful to the industry.
Leading power technology at the entrance of Shenzhen Vocational Information Technology College, an elderly person who is over half a hundred years old is coming to the reporter. This person is Ding Depei.
When talking about this technology, Ding Depei’s eyes were firm and full of pride. He said, "The main core technology of power supply and luminaire is temperature rise. The working temperature of silicon crystal LED is 75 °C. At present, the switching power supply is 37.5 °C due to temperature rise, the ambient temperature is 30 °C, and the temperature is 142-150 °C. The crystal temperature of the power supply and the lamp is extremely high. The temperature of the outer casing is 65-80 ° C. It can be seen that the temperature rise and the performance are incompatible, resulting in poor product reliability."
The power conversion technology developed by Ding Depei uses a variable current method to deliver 25% of the current to the LED when the voltage is constant. The temperature of the LED is only 18.25 ° C, the thermal deposition is 9.37 ° C, and the ambient temperature is 30 ° C. The total crystal temperature does not exceed At 58 ° C, the lamp body temperature of the technology power box does not exceed 45 ° C. The low operating temperature solves the key problem of LED aging due to high temperature, light decay and damage.
Take a street as an example, the same configuration of LED street lights, the domestic street lamp wattage is basically 250W, but Ding Depei's street lamp wattage is only 60W, the reason is that Ding Depei's power technology makes the street lamp use wattage drop significantly, this is a kind Technical breakthrough. The reporter who is experiencing pain is more interested in why the technology has been around for so long and the industry knows very little, and has not even applied for a patent.
Through in-depth understanding, this is related to Ding Depei's personality and experience. In the early days of reform and opening up, Ding Depei began to study fluorescent lamps and driving power technology. In 1993, he developed fluorescent lamp technology. In 1994, Anhui Lu'an Science and Technology Commission issued a document to establish Lu'an Huanyu Electric Light Source Research Institute. Ding Depei was appointed as the director; afterwards, through the support of the government, the development of high-pressure gas discharge lamps and driving power sources began. Every time there was financial difficulty, all the friends and relatives of Lu'an City funded the research and development. In 2005, the power supply was successfully developed, but the LED at that time. The technology is still immature, and LED product quality problems often occur. In 2005, LED was supported by the Shenzhen Municipal Government as a high-tech. Ding Depei hoped that this technology could be supported by the Shenzhen Municipal Government, so the family moved to Shenzhen.
In October 2005, due to the exhaustion of funds, he went all out to participate in the Expo. Hard work pays off. At the Expo, Ding Depei met Dr. Chen Molin (pseudonym) of Tsinghua University. Chen Mooli believes that this technology has great potential for development and is willing to cooperate with Ding Depei to develop power drive technology.
In 2007, the first LED lamp with its own driving power was successfully developed, which made Ding Depei and Chen Mo Li excited. However, the shortage of funds that followed led to a contradiction between the two in the future development model. The two had asked for help from the Science and Technology Bureau of Shenzhen Nanshan District Government. After half a year, the Nanshan District Science and Technology Bureau was willing to fund this technology for free to continue research and development; but Chen Mouli believed that this information was not reliable, so he wanted to put the principle and production process of this technology. Drawings, etc. are organized into reports for transfer.
They have contacted enterprises in Shanghai, Henan, Guangzhou and other places. Among them, a Guangzhou company is willing to invest 50 million yuan to cooperate with fluorescent lamps and high-pressure gas discharge lamps. Afterwards, Ding Depei refused because of some details in the cooperation. At that time, LED gold rushed across the country, from the government to the enterprise to the private sector to spur the LED whirlwind, making people from all walks of life have turned to LED. Because Ding Depei insisted that technology was not transferred, Ding Chen finally terminated cooperation at the end of 2007.
After so many years of business experience, Ding Depei has become more pragmatic and his personality has been praised by friends around him. Among them, Huang Ting, chief engineer of Shenzhen Keyuan Group, said that Ding Depei is a good old man. In the opinion of the reporter, Ding Depei's pragmatic, sincere, stubborn and affective personality has given him a certain personality charm, so he can get the top-notch technology research and development through the free support of friends, but he does not have the ability to expand.
Three years in isolation In February 2008, Ding Depei received a grant of 100,000 yuan from Shenzhen Nanshan Science and Technology Bureau and continued to develop driving power. In 2009, the funds were facing exhaustion. In November, he hoped to participate in the high-tech fair with the last lining. At the meeting, he met Jiang Yuanzhong (a pseudonym) and Chu Lanmeng (a pseudonym) of a decoration company. After that, they became the best friends. .
Through Jiang Yuanzhong's recommendation, he came into contact with a company that is willing to provide funding. However, this company does not have a long-term strategic plan. Ding Depei can continue to develop driving power technology through the company, but it is not allowed to leak technology and is not allowed to participate in any exhibition. Therefore, this technology has been isolated from the outside world for three years.
Now that the two sides have parted ways, Ding Depei resolutely refuses to let reporters mention the full name of the company because of personal feelings. Ding Depei said that the technology is now mature and can be applied to the production of LED street lights, LED tunnel lights, LED downlights and LED grille lights.
Ding Depei hopes to find a partner of integrity through the high-tech platform, so that this technology is accepted by enterprises that truly understand LED.