Best Solar Lights That Stay On All Night vs Solar Lights On in Day Off at Night

Best Solar Lights That Stay On All Night

• High-Power Solar Panels:Design Points: Opt for high-efficiency solar panels, such as monocrystalline or polycrystalline panels, to maximize solar energy conversion during the day. A larger panel area captures more sunlight. It is recommended to use panels with an area greater than 184 cm² to ensure ample energy storage.
• Output Parameters: The open-circuit voltage is approximately 15.0 volts, with a short-circuit current of about 1700 milliamps. These parameters are essential for assessing panel performance.
• Large Capacity Batteries:Design Points: Use large capacity batteries, such as a 12V 150Ah gel battery, to ensure a sufficient power supply during the night and extended cloudy days.
• Battery Types: Recommended batteries include NiMH or Li-ion. NiMH batteries typically use AAA or button cell formats, while Li-ion batteries offer higher energy density and longer lifespan.Solar Street Lights Battery Comprehensive guide
• Battery Capacity Calculation: Assume a nightly illumination time of 10 hours with an LED lamp power of 15 watts. The required battery capacity is given by:Battery Capacity = (Lamp Power x Illumination Time) / Battery VoltageBattery Capacity = (15 W x 10 h) / 12 V = 12.5 AhCloudy Day Continuous Illumination: Assuming an average daily sunlight duration of 5 hours and a solar panel power of 50 watts, the daily energy storage is:Daily Energy Storage = Solar Panel Power x Sunlight DurationDaily Energy Storage = 50 W x 5 h = 250 Wh

  The total energy from a 150 Ah, 12V battery is:

  Total Battery Energy = Battery Capacity x Battery Voltage

  Total Battery Energy = 150 Ah x 12 V = 1800 Wh

  Thus, the number of continuous illumination days during cloudy weather is:

  Continuous Illumination Days = Total Battery Energy / Nightly Energy Demand

  Continuous Illumination Days = 1800 Wh / 150 Wh/night = 12 days

• Intelligent Control Systems:Design Points: Implement advanced fuzzy control theories and wireless technologies for intelligent battery management and light control.Control Strategy: Adjust brightness for the first and second halves of the night to conserve power, maintaining higher brightness initially and reducing it later.Network Management: Modern solar lights can achieve network management through wireless modules, allowing each light to automatically turn on and off according to network commands, enhancing system flexibility and reliability.
• Durability and Reliability:Design Points: Use high-quality materials like cast aluminum or stainless steel to enhance weather and corrosion resistance.Waterproof Design: The battery compartment should undergo waterproof optimization to prevent rainwater from causing short circuits or corrosion, thereby extending battery life.

Solar Lights On During the Day and Off at Night

• Photocell Sensor Control:Design Points: Install photocell sensors that automatically control the lights by detecting external light intensity.Sensor Types: Common photocell sensors include light-dependent resistors (LDR) and photodiodes, which generate corresponding electrical signals based on light intensity changes to trigger control circuits.Control Logic: When light intensity falls below a set threshold, the sensor sends a signal to the controller to activate the LED lights; conversely, the controller turns off the lights when light intensity exceeds the threshold.
• Low-Power Design:Design Points: Choose low-power LED lights to minimize daytime energy consumption, ensuring the battery has sufficient energy for nighttime illumination.LED Parameters: The LED lights generally operate at about 10 volts with a constant current of approximately 1000 milliamps, resulting in an actual power consumption of around 15 watts.
• Charging Mode:Design Points: During the charging mode, the lights are illuminated solely for charging, minimizing energy loss.Charging Efficiency: Solar panels should ensure efficient energy conversion while charging during the day. For example, the Parans SP4 series solar light guide products have a light guiding efficiency of 23.93%.Cloudy Day Adaptation: In prolonged cloudy conditions, adjust the charging mode to prolong battery life, possibly reducing charging time during daytime or switching to backup power during overcast days.
• Application Scenarios:Design Points: This type of lighting is ideal for situations requiring daytime decorative or functional lighting, such as gardens, parks, and courtyards.Aesthetic Design: The lamps should focus on aesthetic value, featuring designs that mimic candle shapes or RGB color-changing capabilities to enhance visual appeal.Easy Installation: Typically, the lights feature a pointed bottom for easy insertion into the ground, simplifying the installation process.

Best Solar Lights That Stay On All Night Pairing Suggestions

• System Capacity Optimization:Design Points: Scientifically design system capacity based on local geographical location, weather conditions, and load levels.Formula: The system capacity calculation formula is:System Capacity = Maximum Load Power x Longest Continuous Cloudy Days + Safety MarginExample: If the maximum load power is 15 watts, the longest continuous cloudy days is 5 days, and the safety margin is 20%, then:System Capacity = 15 W x 5 days x 24 hours/day x 1.2 = 2160 Wh
• Light Source Selection:Design Points: Choose the right light source, such as LED lamps, to meet specific lighting needs.Luminous Flux: The luminous flux of the LED lights should be selected based on the required illumination. For instance, the light guide lighting system by Jiangsu Shengfulai Energy Technology Co., Ltd., under outdoor illumination at 100,000 lux, can achieve illumination at 1140 lux at a reference distance of 2 meters, with a luminous flux of 3260 lumens.Color Rendering Index: For areas with high color rendering requirements, opt for light sources with a high color rendering index, such as ceramic metal halide lamps or electromagnetic induction lamps.
• Lighting Duration:Design Points: Ensure the daily power generation of the photovoltaic component or the remaining battery capacity is enough to meet the load lamps’ power consumption at night.Formula: The daily energy demand for load lamps is calculated as:Energy Demand = Lamp Power x Lighting DurationExample: Assuming the lamp power is 15 watts and the lighting duration is 10 hours,Energy Demand = 15 W x 10 h = 150 Wh
• Temperature Impact:Design Points: Consider the temperature’s impact on various system components, especially solar cells and batteries.Temperature Characteristics: The open-circuit voltage of silicon solar cells decreases with temperature, while short-circuit current rises, leading to reduced output power during high temperatures.Batteries: Lead-acid batteries exhibit slower chemical reactions in low temperatures, reducing available active materials and capacity. It is advisable to use batteries with good low-temperature start capabilities, like lithium-ion batteries, in colder regions.
• Communication Devices:Design Points: Utilize wireless transmission modules to achieve communication between street lights, enhancing system coordination and reliability.Module Types: Support GPRS (General Packet Radio Service) with RS-232 interfaces; the communication distance can reach 100 meters with strong interference resistance.Applications: Flexible lighting control strategies can be implemented in bustling urban areas, including on-demand illumination strategies and varying brightness control for different times.

Conclusion

Designing and pairing solar lights requires a comprehensive consideration of various factors, including solar panel power, battery capacity, intelligent control system performance, and light source selection. By employing scientific and rational system design, solar lights can operate reliably under various climatic conditions. Particularly for all-night lights and those that operate during the day and turn off at night, optimized design and proper pairing can significantly enhance performance and lifespan, meeting diverse user lighting needs. We hope the suggestions and formulas presented in this article will assist you in better designing and selecting suitable solar light products.

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