Why You Spent More Money On Solar Street Lamp?

The application scope of solar street lamps is very broad, and it is famous for its safety, environmental protection and energy saving. Therefore, solar street lamps are widely installed in communities, rural roads, high roads, campuses, etc. Solar powered street lamps are composed of five major components, solar panels, LED light sources, controllers, batteries and light poles. The specific conditions of different regions are different, so the configuration of street lights is different, such as the local sunshine market and the longest number of rainy days. Only in accordance with the actual situation, the configured solar street lamp can guarantee its lighting effect. In addition, the specific parameters of each component configuration also directly determine the solar street lamps price, so in reality, there are often differences in prices of the same street lights. Some users will reflect that the solar powered street lamps price bought by friends is very cheap. In this article, we will explain why there is a difference in the solar street lamps price.

1. The determination of the voltage of the solar street lamp

The DC input voltage of the solar street lamp source is used as the system voltage, which is generally 12V or 24V. When the solar module voltage is 36V, the battery voltage is required to be no less than 2/3 of the module voltage, so the voltage of the battery, controller and light source must be selected at 24V.

2. The light source used by solar street lamps is different

The selection principle of the solar street light source is a light source suitable for environmental requirements, high luminous efficiency and long service life. Commonly used street light source types are: three-primary-color energy-saving lamps, traditional sodium lamps, induction lamps, LED light sources, etc. At present, the most popular solar energy street lights on the market should be induction lamps and LED light sources. LED light source is the most expensive of many light sources, and of course the best performance. High light efficiency, long service life, low light decay and good lighting effect. So if the solar street lamp you buy uses LED light source, the price will be relatively more expensive than other street lights.

3. The controller used is different

The main control part of the solar street lamp is the controller, which belongs to the "central nerve" of the solar powered street lamp, which controls the charging and discharging of the entire solar road light, the overshoot protection of the battery, and the protection of the entire system of the solar street lamp. The design of the charge and discharge controller takes into account light control, time control, overcharge and overdischarge protection, and can realize secondary energy-saving control. If you use a substandard controller, the battery board may burn out. If the street light wants to control the brightness in different time periods, you must choose the right constant current source, otherwise it is impossible to realize it. Different controllers have different constant current requirements for time-sharing control, so you must choose the right model. High-quality controllers will also be more expensive.

4. Battery capacity calculation

Determine the type of battery and the number of storage days for the battery according to the local cloudy and rainy weather. There are many rainy days in southern China, and the storage weather is generally 5-7 rainy days. The capacity of the battery is determined by the lighting hours required per day and the longest number of rainy and cloudy days that require lighting. The calculation formula of battery capacity: battery capacity = load power X daily working time X storage days ÷ depth of discharge ÷ system voltage. There are many types of storage batteries. Gel batteries, lead-acid batteries, and lithium batteries are commonly used in the market. Lithium batteries have the best performance and the highest price. Users with sufficient budget can give priority to lithium batteries.

5. Calculation of solar panel capacity

For solar street lamps, the overall system configuration formula: P=light source power X light source working time/peak sunshine hours; where P is the power of the battery assembly, in W; light source working time in H. The price of solar panels is also related to capacity, the higher the configuration, the higher the price.

The above is the relevant content of the solar street lamp configuration, different configurations with different prices. Some street lights have the same configuration, but the quality of the accessories is completely different. Professional solar street lamp manufacturers can provide you with the best configuration plan to meet your lighting needs while ensuring the quality of each accessory.