LED street lighting combined with solar energy is difficult to become a hot spot

Although in practical applications, solar LED lights never form a real sense of marketing, but in terms of technology, it was a very popular technology in the industry a few years ago, and there are even more products, large-scale demonstration project. But with the LED technology is relatively more rapid progress and price increase, due to defects in the solar LED street lamp design, can not fundamentally solve the inherent, makes the ideal of "competitive advantage" is gradually offset, and LED lighting technology and industrial development are getting better in the more independent the development of solar energy, and is no longer the focus of applied technology research and industry promotion.

Solar and LED need each other

Was hot, we can understand, because from a technical point of view of idealism, it is indeed a very attractive technology, its application prospect to us as you can simply use the "perfect" to describe: one-time investment, long life and low maintenance cost of the LED lamp without cable laying cost, not as convenient as the trees without electricity costs inexhaustible energy and no pollution, and so on geographical restrictions.

In addition to ideal, in fact, these two hot technologies of solar and semiconductor lighting, each does have hit it off with each other, need each other reasons:

Of solar technology, lighting applications is not the main field of application, nor can best embody the advantages of the field, but it is a form of energy, lighting the most intuitive and easy to be popular and accepted by cognitive. But in the current level, solar technology as high cost, low energy efficiency problems can not be avoided, especially in lighting applications of monomers, such as not to use the LED technology, and according to the conventional volume ratio design of solar lighting system, electricity is not sufficient for the power consumption of the lamp should tend to face the embarrassment of conversion. In this sense, because of its low energy consumption under the same visual effect, the advantages of DC inverter in the work, LED has become the first choice for the application of solar lighting.

Of LED technology, to enter the general lighting market is the ultimate goal, the product performance characteristics, and application of street lamp is the most important breakthrough. But in the street in the application of high power LED the cost of a few years ago is very expensive, even if there is energy saving, long life, high safety, no pollution and other technical advantages, are not enough to offset the huge disadvantages with conventional lamps in the price, the promotion only based on "Application". Largely sell the "concept" instead of the product, there is no way to go the market route. With the combination of solar energy application seems to be a breakthrough: first, with the combination of solar energy although one-time investment cost is higher, but the concept as "selling point" the meaning is more prominent, and the demonstration and promotion of solar energy itself a piece of market demand; secondly, in combination with solar energy, compared to LED other lighting technology has more advantages, not only saving problems, more important is to take some technical means according to their characteristics (such as current and brightness), can be further reduced compared to the solar system and battery configuration cost more expensive.

Unavoidable drawbacks in practical application

But in research and practical application of the inherent defects of solar LED street lamp can not avoid is also very difficult to overcome:

Is set to bear the brunt of the "energy saving and environmental protection" as the main point of the system, which has great waste of resource allocation problems. Because street lighting products have mandatory standards, which include the "power shortage rate" indicators, it does not allow the same as the landscape lighting products can be encountered in rainy days do not work. As a result, from a technical point of view of design, collection and storage of energy must be the most ideal weather conditions (sunshine time is short season, continuous rainy days) as the basis, as a result, in most conditions, most of the energy configuration (solar cells) and the storage device is idle, not only is the cost of the system will remain high, and energy saving to the performance of the system itself and the comprehensive utilization of the theme is draw further apart.