solar led street light, auto on-off

Working of a Solar Street Light

On receiving sunlight, the solar panel in solar street light produces electric power (blinking green color LED indicates the battery charging process during daytime). This power charges the battery during daytime. After sunset, the solar street light starts glowing automatically. The LED light consumes power stored inside the battery during daytime. A motion sensor uses Infrared motion sensor to detect any movement around the light (working explained later). This helps in conserving energy and providing better backup especially in cloudy or foggy weather conditions. We also provides the option in solar light with battery to switch On/Off the motion sensor functionality. This special functionality can be requested at the time of placing order for Integrated solar street light or the solar light with battery.

Product Construction

The solar luminary has Aluminum pressure die cast (PDC) housing, which is completely waterproof (IP65 rating) and suitable for use outdoors. The housing contains LED light card, solar driver card with PWM / MPPT charge controller, battery and motions senor. We use 70 CRI LEDs, which come with 50,000 hours guaranteed performance. Our solar driver card is STM8 microprocessor controlled and has PWM / MPPT Solar charge controller with DC LED driver.

Advance Information*

Introduction

Introducing the cutting-edge solution to street and pathway lighting—LENDRA's Solar LED Street Light with auto on-off functionality. This state-of-the-art product is meticulously designed to illuminate outdoor spaces while conserving energy and promoting sustainable living. Whether you need lighting for residential streets, parking lots, or public pathways, LENDRA offers a range of LED power options—12W, 15W, 20W, 25W, 30W, 40W, 60W, and 80W—each tailored to meet specific lighting needs.

Key Features

1. Integrated Design

LENDRA's Solar LED Street Light merges the solar panel, LED luminary, and a built-in energy storage system, creating an all-in-one solution. This integration simplifies installation and enhances durability.

2. Powerful Battery Technology

Equipped with either Lithium-ion or Lithium Ferro Phosphate (LiFePO4) batteries, the street light ensures efficient energy storage and long-lasting performance. These advanced batteries offer better energy density, thermal stability, and longevity compared to traditional battery types.

3. Smart Sensor Technology

LENDRA incorporates an infrared motion sensor that detects movement around the light. This feature enables intelligent power management, where the LED brightness automatically increases upon detecting motion and decreases when the area is unoccupied. This adaptive lighting not only conserves energy but also ensures security and visibility in movement zones.

4. Durability and Weather Resistance

The LED luminary's housing is constructed from premium Aluminum pressure diecast (PDC), designed to withstand various outdoor conditions. With an IP65 rating, the housing is entirely waterproof and dustproof, ensuring reliable operation in harsh weather conditions.

5. Optional Motion Sensor Functionality

For specific applications where constant lighting is preferred, LENDRA offers the flexibility to opt-out of motion-sensor functionality. Customers can request this feature at the time of ordering.

6. Long-Lasting LEDs

The street light uses 70 CRI LEDs, promising up to 50,000 hours of consistent and quality lighting performance. High CRI LEDs ensure accurate color rendering, enhancing the visual appeal and safety of the illuminated area.

Specifications

1. LED Power Options

• 12W: Ideal for smaller pathways and residential streets.
• 15W: Suitable for medium-sized areas like small parking lots.
• 20W: Perfect for larger residential streets and small commercial areas.
• 25W: Provides excellent illumination for larger pathways and medium-sized commercial areas.
• 30W: Versatile for both residential and medium-sized commercial applications.
• 40W: Designed for expansive spaces like larger parking lots and community areas.
• 60W: Ideal for large commercial complexes and public pathways.
• 80W: Best for extensive areas, offering powerful illumination for large open spaces.

2. Battery

• Type: Lithium-ion / Lithium Ferro Phosphate (LiFePO4)
• Charge Time: 6-8 hours (Direct Sunlight)
• Discharge Time: Up to 12 hours of continuous lighting

3. Solar Panel

• Material: High-efficiency polycrystalline or monocrystalline silicon
• Conversion Efficiency: ≥ 19%
• Lifespan: 25 years

4. Charge Controller

• Type: PWM / MPPT
• Microprocessor: STM8 controlled
• Features: Overcharge and over-discharge protection

5. Motion Sensor

• Type: Infrared (IR)
• Detection Range: 5-8 meters
• Detection Angle: 120 degrees

Working Mechanism

Daytime Operations

During the day, the high-efficiency solar panel converts sunlight into electrical energy. This electric power charges the built-in battery, indicated by a blinking green LED. The sophisticated microprocessor-controlled charge controller optimizes the charging process and ensures the battery is protected from overcharging.

Nighttime Operations

At sunset, the solar street light automatically activates. The LED luminary draws power from the fully-charged battery to provide consistent lighting. The integrated motion sensor stands guard, ready to adjust the brightness levels based on movement detection, ensuring both efficient energy use and enhanced security.

Application Scenarios

Residential Streets

LENDRA’s Solar LED Street Lights are perfect for residential streets, where optimal lighting is crucial for safety and aesthetics. The different power options allow households and communities to choose according to their specific requirements.

Parking Lots

From small parking lots to large commercial parking structures, these solar lights ensure well-lit and secure environments for both vehicles and pedestrians.

Public Pathways

Perfect for parks, walkways, and other public pathways, providing safe and energy-efficient lighting solutions that enhance public spaces