Large Solar Street Light

Product description

Solar Panel Array: A large solar street light is equipped with an extensive solar panel array. These panels are usually composed of high - efficiency photovoltaic (PV) cells, such as monocrystalline silicon cells. The array is designed to capture a large amount of solar energy. The area of the solar panel array can range from 2 square meters to several tens of square meters, depending on the power requirements of the street light. The power output of such an array can be well over 100 watts, sometimes reaching up to 500 watts or more. The panels are carefully angled and oriented to receive maximum sunlight throughout the day. For example, in areas with a latitude of around 30 - 40 degrees, the panels are often tilted at an angle approximately equal to the local latitude to optimize sun exposure during different seasons.

High - Power LED Lighting Module: The LED lighting module of a large solar street light is a high - performance component. It consists of multiple high - power LEDs that work together to provide intense illumination. The lumen output of these modules can range from 3000 lumens to over 10,000 lumens. The color temperature of the LEDs can be adjusted according to specific applications. A color temperature of around 4000 - 5000K is often preferred for large - scale street lighting as it provides a bright, clear, and relatively natural - looking light. The LEDs have a long lifespan, usually rated at 50,000 hours or more, which reduces the need for frequent replacements.

Battery Bank: The battery bank in a large solar street light is a crucial part for energy storage. It typically consists of multiple deep - cycle batteries, such as lithium - ion or lead - acid batteries. Lithium - ion batteries are increasingly popular due to their high energy density and longer cycle life. The capacity of the battery bank can range from 36 volts with a capacity of 50 amp - hours to much larger configurations, depending on the desired lighting duration and power consumption. These batteries are housed in a protective enclosure to prevent damage from environmental factors and are connected to an advanced battery management system (BMS). The BMS monitors the state of charge, discharge current, and temperature of the batteries to ensure safe and efficient operation, preventing overcharging, over - discharging, and overheating.

Intelligent Controller: The intelligent controller is the "brain" of the large solar street light. It oversees the entire operation of the street light system. During the day, it manages the charging process of the battery bank from the solar panel array. It uses advanced algorithms to optimize the charging rate according to the available sunlight, battery temperature, and state of charge. At night, it controls the power output to the LED lighting module. The controller can also have features like remote monitoring and control. For example, it can be connected to a wireless network, allowing operators to adjust the brightness, lighting schedules, and monitor the system's performance from a remote location.

Working Principle

During daylight hours, sunlight shines on the solar panel array. The photovoltaic effect occurs in the PV cells, causing electrons to be freed and generating a direct current (DC). This DC electricity is then fed through a series of diodes and conductors to the battery bank. The intelligent controller regulates the charging process to ensure that the batteries are charged efficiently and safely. It monitors the voltage, current, and temperature of the battery bank to prevent overcharging and other potential damage.

As the sun sets and the ambient light level drops below a predefined threshold (detected by a light sensor), the controller activates the LED lighting module. The battery bank supplies power to the LEDs, and the controller converts the DC power to the appropriate voltage and current required by the LEDs to produce bright light. The lighting duration and intensity can be adjusted according to the settings programmed into the controller. For example, in areas with low traffic at night, the controller can reduce the brightness to conserve energy while still providing sufficient illumination for safety.

Applications

Highways and Expressways: Large solar street lights are ideal for highway and expressway lighting. Their high - intensity illumination can provide clear visibility for long stretches of roads, ensuring the safety of high - speed traffic during the night. The ability to operate independently of the power grid is also an advantage in remote areas where grid - connection may be difficult or expensive.

Large - Scale Industrial : AreasIn large - scale industrial areas such as factories, warehouses, and logistics hubs, these street lights can provide bright and reliable lighting. They can cover large open spaces, loading docks, and storage yards, facilitating round - the - clock operations and improving workplace safety.

Sports Stadiums and Outdoor Venues: For sports stadiums and other large outdoor venues, large solar street lights can be used to light up the playing fields, spectator areas, and parking lots. Their high - power illumination capabilities ensure that events can take place even after sunset, providing a well - lit environment for athletes and spectators.