New Technologies of Solar Street Light System

Solar energy is not strange to many people nowadays. It's been applied in various industries over the past decades. It's green, environmentally friendly, and energy-saving. This inexhaustible energy help us a lot especially in the lighting industry. Solar street light system, the perfect outdoor lighting system, use the sunlight as energy source and illuminate parks, highways, etc. With the increase of solar street light system market, the technology of solar street lamp is also constantly updated to meet the needs of the market. When selecting solar street light system, we should pay attention to the light with latest technologies at an affordable price. We'll introduce some technologies in this article for your reference.

1. Light source

Energy-saving lamps, sodium lamps, LED lamps, and induction lamps are several light sources commonly used in solar street light systems. At present, powerful solar street light manufacturers are gradually adopting LED light sources. The LED light source has a long service life, does not contain toxic substances, and there is no ultraviolet radiation. Moreover, LED is a low-voltage power supply, which is the easiest power source for solar power generation. Other lamps require a larger boost range, power conversion loss is large, and electromagnetic interference is also large. However, the price of LED light sources is a bit more expensive than other light sources. It is believed that with the continuous development of technology, the solar street light source will be further optimized.

2. Battery

Solar battery include lead-acid batteries, gel batteries, and lithium batteries. Lithium battery would be the primary choice for more solar street light system manufacturers. Among them, lithium batteries include ternary lithium batteries and lithium iron phosphate batteries. Lithium battery solar street light systems have relatively high energy prices and high storage energy density. It is about 6 times that of lead-acid batteries. The weight is relatively light, and the temperature is highly adaptable. It is green and environmentally friendly, and does not produce any toxic and harmful heavy metal elements and substances such as lead, mercury, cadmium, etc. Lithium battery street lights have a long service life, which can reach more than 6 years, which effectively saves the cost of use.

3. Controller

At present, the mainstream charging technology in the market has three technologies: switching, PWM, and MPPT. Which charging technology is used directly determines the quality and cost of the controller. MPPT street light controller is better than PWM, and PWM is better than switching. And the price is directly proportional, and the technical difficulty is the more complicated. Everyone knows that solar street light systems work outdoors. Working in a harsh working environment all year round, if the waterproofing is not done well, it is easy to cause a series of problems such as corrosion, rust, and line aging, which will seriously affect the service life of the controller. Therefore, water resistance is an important indicator for judging the quality of the controller. The current mainstream method is to use aluminum alloy casing and full potting treatment. IP68 is also the highest waterproof indicator at present.

4. Sensor technology

If solar street light system provide illumination at 100% power all the night, a lot of energy will be wasted. In the midnight, few people are outside. This is why the sensor technology of solar street light system develops. Radar technology is a new sensing technology developed in recent years. It is smarter than PIR sensing and voice-activated sensing, with higher sensitivity, longer sensing distance of 6-15m, and better sensing effect. It won't affected by the environment temperature. So it is recommended to use radar to sense solar energy. High performance solar street light system with radar induction technology would be more expensive. If you have limited budget, PIR sensor can be a choice.

5. Solar panel

Solar panels are divided into monocrystalline and polycrystalline solar panels. Monocrystalline silicon solar panels have high efficiency and low light attenuation, but they are expensive. Polysilicon solar panels have relatively low efficiency but low prices. There are many dimensions and specifications of solar panels, and you must decide which size is more appropriate according to your own street lamp installation environment. Generally speaking, for the same power, it is more appropriate to choose a smaller size.

Many countries have put forward the concept of "smart city". Except for the technology development of the solar street light system components, the smart street light systems have been put into use. The solar street light system is combined with many other functions, public WIFI, 5G base station. As the solar street light system market has continued to grow, we believe the technology of the street light will continue to develop, too.