The government and industry promote the development of photovoltaic lighting

"For photovoltaic lighting, I used the word "industry." As a subdivision industry, China's photovoltaic lighting has a say in the world."

The birth of photovoltaic lighting

Ding Kongxian believes that the concept of photovoltaic lighting is very clear, that is, a lighting system that uses solar energy to drive. In business, the use of solar energy began invented by Bell Labs in the 1950s. It was first used in specific areas and was not promoted. There are two reasons for this: On the one hand, although solar energy is inexhaustible, Clean energy, but because solar cells belong to the semiconductor industry, at first the high price of semiconductors, so solar energy products are expensive; on the other hand, among the lighting appliances, high energy consumption is mainly concentrated in incandescent lamps, halogen lamps, and some video lights. Therefore, a very expensive energy source is used to drive a highly energy-consuming light source that can only be used in extreme cases. Therefore, the solar energy industry has not risen 20 years ago, or "there is no product industry."

But 20 years later this situation has changed and the industry is gradually on the right track. Ding Kongxian said that this first began with the emergence of LED. However, LED development was very limited at the beginning. For example, in application lighting, there was only red light, green light, and white light at the time, and LEDs were used only for display functions and no one thought of lighting. Until the mid-1990s, there was a spectrum of yellow light that was similar to incandescent light in the LED field, which was used in lighting fixtures. This change is very surprising, but did not think this will be very popular in the world.

This change can be regarded as revolutionary. Ding Kongxian said, recalling that two or three decades ago, at that time, whether it was in China or Europe and the United States, the outdoors at night was usually dark and there was no light at all. Occasionally, there is a point that the wealthy people do outdoors. But at this time, China has started to make solar lights, although the LED drive current is only 30 milliamps. This is because if the current is larger, the white light turns yellow. Despite all the restrictions, although the thousands of dollars that had been spent in the past can now be achieved in tens of US dollars, this kind of innovation has an immediate impact in the market, even rising to several million solar lights in 1998. Product market.

In theory, both LED and solar energy belong to the semiconductor industry. Until now, semiconductor processing is still very expensive, resulting in the inability to develop a large number of civilian lighting. This is a bottleneck. It is worth noting that at present, there are lighting companies in China, in order to meet market requirements and allow more people to enjoy the light, a breakthrough has been made in this regard. It can be said that this industry was created by the Chinese. It belongs to the national industry and is not available abroad. China's photovoltaic lighting industry has illuminated the world.

Government and industry promotion are key

Ding Kongxian believes that the National Semiconductor Lighting Research and Development and Industry Alliance has played a significant role in promoting the development of the lighting industry. At the very beginning of this industry, people could hardly buy China's LED; only lighting-enabled display products did not have lighting products. However, the industry alliance began to promote around the year 2003, planting many opportunities for the growth of the industry. Although the industry now reflects a surplus of investment, the industry was very small at the time and it was not so hot at the moment. “It is often impossible to buy things.”

In addition, national ministries and commissions such as the Ministry of Science and Technology have been paying close attention to this industry very early and set up projects during the “Tenth Five-Year Plan” period, which also laid the foundation for the development of the photovoltaic lighting industry. “To sum up, the rise of photovoltaic lighting industry in China is The combination of technology, policy, and markets is a matter of pride.”

The future of photovoltaic lighting is bright

“Some people say that solar energy, LED, and photovoltaic can be combined together, which is a bit like 'celestial distribution'. Although early solar cell prices are high, Chinese companies use ordinary solar cells or even scraps instead of high-priced solar cells. The effect is still very good.” Ding Kongxian is very optimistic about the future of these advantageous professions, “outdoor lighting accounts for 30% of all lighting, and many of this part can use solar energy as an energy source.”

He predicted that with many factories in China and the wisdom of the Chinese people, LED lighting will have a major breakthrough in recent years. Regardless of whether it is light efficiency, energy saving and environmental protection, LED lighting has highlighted its advantages. It has been defined as a third-generation light source and has rapidly entered people's daily lives in recent years.

Photovoltaic lighting is the first to generate electricity, the second is lighting, the third is the control system, and the fourth is the power generation system. “The first thing after our astronauts went out was to deploy solar panels to generate electricity and then store the electricity.” Ding Kongxian said, “PV is now more difficult and it is close to the minimum: its power generation price. Even close to traditional power generation methods, in Beijing and even in North China, as long as the electricity is only 89 cents, the user terminal price is only 67 cents.”

Ding Kongxian also pointed out that batteries are the biggest problem in the industry. He said that now the use of solar cells can be guaranteed for 25 years, LED is calculated in 10,000 hours, but the battery time limit is often only 10 years up and down, it is difficult to match the previous two.

The photovoltaic lighting industry is a complete energy-saving and environment-friendly green industry, and there should be a market capacity of several hundred billion yuan in China alone. Once the problem of the battery can be solved, photovoltaic lighting will form a more extensive market, and there will be great development for the revitalization of the national industry. Ding Kongxian hopes that domestic practitioners have an unshirkable responsibility to develop photovoltaic lighting products, creating green and benefiting humanity.