What Rre The Necessary High Performance Parts for Road Solar Light?


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The total sales of the global road solar light market in 2020 reached 6 billion US dollars, and it is increasing year by year. From 2012 to 2022, the compound annual growth rate of the global road solar light market was 16.92%. Road solar lights are infrastructures used for outdoor lighting, powered by solar energy. The Asia-Pacific market is expected to become the fastest growing place in the road solar light market. For example, Japan, China, South Korea and other countries have successively proposed measures of "energy saving, emission reduction, and green development". More and more companies start to produce road solar lights, some of them provide high-quality products. There are also some inferior manufacturers that produce low-quality street lights, disrupting the market at low prices. The road solar light is composed of controller, solar panel, battery, light source, light pole and so on. The quality of each accessory affects the service life of road solar lights. If you have an understanding of the technical parameters of these components, you will find that some low-quality road solar lights are simply not enough to provide lighting that meets user requirements. Function of road solar light depends on the performance of the components. In this article, we will describe in detail why road solar lights should be equipped with high-quality components.

1. Solar panel

During the daytime, the sunlight shines on the solar panels, and at this time the battery will generate a certain range of DC voltage, which will convert the light energy into electrical energy, and then transmit it to the controller. The overcharge protection is used to transfer the transferred electric energy to the storage battery for storage. At night, when there is no sunlight, solar street light components can't receive light energy. At this time, the solar LED street light intelligent controller will automatically turn on the control device. The battery will provide electrical energy to the LED light source through the over-discharge protection device of the intelligent controller. So that the road solar light can illuminate the roadways. In addition to the quality of the solar panel itself, other factors are also very important. For example, the direction of the solar panel should be the same as the direction of sunlight. The surface of the solar panel should be kept clean and not covered by snow or leaves, otherwise it will affect the efficiency of the solar panel. So the quality of solar panels is very important, because it affects the absorption of solar energy. If you can't absorb enough solar energy, there will not be enough power to supply the street lights.

solar panel

2. Battery

The battery is the core component of road solar lights. It stores and releases electrical energy, and its function is equivalent to an electrical energy warehouse. As the function of storing and releasing electric energy, the battery can be installed on the light pole or buried in the ground. The function of the battery box is to protect the battery underground, and the battery will not be corroded by groundwater. During the day, the battery stores the electric energy converted by the solar photovoltaic module in the battery. At night, the controller issues instructions to discharge the battery.

3. Controller

Regardless of the size of solar lamps, a good performance controller is essential. In order to prolong the service life of the battery, its charging and discharging conditions must be restricted to prevent the battery from overcharging and deep charging. In places with large temperature differences, a qualified controller should also have temperature compensation. Simultaneously, the solar controller should have both street lamp control functions, light control, time control functions, and automatic load control function at night, which is convenient for extending the working time of solar street lighting system in rainy days.

4. Light source

The light source used by road solar lights is an important indicator of whether the solar lamps can be used normally. Generally, solar lamps use low-voltage energy-saving lamps, low-pressure sodium lamps, induction lamps, and LED light sources.

Low-voltage energy-saving lamps: low power, high luminous efficiency, with a service life of 2000 hours.

Low-pressure sodium lamp: high lighting efficiency (up to 200Lm/w), but an inverter is required and the price is expensive.

Induction lamp: low power and high luminous efficiency.

road solar light

LED: LED light source, long lifespan, up to 50,000 hours, low working voltage, no inverter, high light efficiency, domestic 50Lm/w, imported 80Lm/w. As technology advances, the performance of LEDs will be further improved. More and more road solar light manufacturers are beginning to adopt high-performance LED light sources.