What are the main components of solar lights?

The first component is the solar panel

Solar panels produce electricity even on cloudy days. However, in such a case, the amount of electricity generated from the sun will be less on a bright sunny day.

The storage battery is sized to store electrical energy for several days without a full charge.

At night, solar panels do not generate electricity.

The darkness detection circuit (sunlight sensor) turns on the LED, consuming the power stored in the battery produced by the solar panel during the day.

The sunlight sensor measures the amount of ambient illuminance and turns on the light when the illuminance drops below a certain level.

The solar panel for solar lighting system is different from the traditional large solar panel. The panel consists of solar cells connected in series to generate a higher voltage. A solar panel converts sunlight into electricity by generating an electric current, known as the “photovoltaic effect". The amount of electricity depends on the intensity of sunlight, whether the location is exposed to direct sunlight or not, and how long the sunlight is accessible.

Batteries / Storage Batteries

Although the least expensive option, flooded lead-acid batteries are still not used in solar lighting systems.
They are not regularly maintained and there are many risks when operating, especially during transportation and handling. For this reason, mostly sealed batteries / accumulators will be preferred. The sealed battery/battery is rechargeable and must be replaced every few years.

In a solar lighting system, the storage battery is the only component that needs to be replaced relatively frequently.

Solar panels and electronic devices (sunlight sensor circuit and controller) have a much longer lifespan. With a full battery charge, the solar light can work up to 10 hours (depending on the manufacturer's choice of battery capacity for the lamp).

Each battery has a capacity based on the number of “Days of autonomy".

This is how long the battery can last without a full charge from the solar panel. Maybe 3 to 5 days.

Today, solar lights are typically powered by one of three different types of batteries.

Here's how solar batteries can give you various benefits or drawbacks, depending on their type:

• Nickel Cadmium (NiCad or NiCd) - one of the oldest and cheapest battery technologies. NiCad batteries are known to be resistant to extremely cold temperatures. However, over time, the battery uses less and less of its full capacity. This is called the “memory effect". The result is shorter-than-expected battery life. The typical life of a NiCad battery is about two years of operation.
• Nickel Metal Hydride (NiMH) batteries last up to 40% longer than NiCad batteries, but they are quite susceptible to extreme temperatures, which can reduce their lifespan significantly. In addition, NiMH batteries are less susceptible to the “memory effect".
• Lithium-Ion (Li-Ion) batteries are the most expensive but also the most durable. They are known for their small size and are not affected by the “memory effect". Although the cost of these batteries is decreasing, they do present some risks due to their chemistry and manufacturing methods. Unfortunately, such volatile vehicles are associated with a fire hazard. However, all laptops and mobile phones these days come with li-ion batteries.

There is a diode between the solar panel and the storage battery that prevents current from flowing from the storage battery to the panel at night. The battery voltage (also known as “system voltage") is typically 12V. 6V or 24V.

Charge controller

The main function of the charge controller is to prevent the battery from overcharging and over-discharging. In addition, it protects the solar panel at night by preventing reverse current from the storage battery to the solar panel.

Finally, it regulates the voltage and current supplied to the LED so that the lamp does not overheat and explode. The charge controller is supposed to act as a smart controller. It manages all the other three components - the storage battery (by preventing overcharging and over-discharging), the solar panel, and the LEDs (by implementing light control and timing control). 12V PWM charge controllers are preferred as a cost effective option for solar lights.

Solar lighting source

High wattage LEDs are cheaper, but they are rated higher and they also generate more heat than regular LEDs.

Daily operating hours can be from 6 to 10 hours, depending on the season. LEDs can last up to 10 years before needing to be replaced.

Additionally, LED bulbs are reported to have a lifespan of up to 100,000 operating hours.

The time to change the solar component (whether batteries, lights or panels) has come when your lights lose their efficiency and can't maintain normal brightness at night.

The best address to sell solar lights in 2021 for you:

The address that sells the best and most prestigious solar LED lights on the market today is Intech Energy with many models of outstanding quality.

• Our lamp models have been through a rigorous testing process, meeting international safety standards.
• Having a reputable warranty period, ensuring the best policy implementation will bring many benefits to customers.
• The most diverse models on the market today
• There are good prices and policies for agents
• Has a wide distribution system in Hanoi, Ho Chi Minh City, Da Nang, Central Highlands...
• Receive and install solar-powered lights and light poles, have a policy to support the process of maintenance, maintenance, upgrade and improvement of the lighting system for customers in need...

At the same time, Intech Energy is also one of the prestigious EPC general contractors in the field of providing installation solutions, supplying materials and constructing and installing solar power projects nationwide ranging from households to households. projects for businesses. We have more than 10 years of working experience in the solar power and renewable energy industry, always committed to giving dedicated advice to our customers to provide effective solutions with quality products, competitive prices, and competitive prices. Sustainable development of clean energy sources to "Create a green life".