The emergence of Solar LED lights fixtures has brought convenience to our lives. Its convenience, practicality, and intelligence have met our more demand for lighting. However, many people buy solar powered lighting fixtures that perform poorly, with poor brightness and durability. We cannot identify the good or bad of them in a short period of time, and over time, there may not be a humanized solution after sales. The lack of market standards, high prices, but unsatisfactory results, and so on, These have all become criticisms of the market. So how can we buy high-quality and affordable products? How to avoid merchants’ tricks? How to choose the right product at the beginning of the purchase? Before answering these questions, let’s first take a look at the structure of solar lighting fixtures, which key components are they composed of?

Solar LED lighting fixtures are mainly composed of five key components: photovoltaic panels, batteries, LED light sources, lamp body shells, and control systems. Below, we will analyze the roles and application misunderstandings of these five aspects one by one.

Photovoltaic panels

The photovoltaic panel determines the brightness of the lamp. Everyone here will wonder, shouldn’t it be the light source that determines the brightness of the lighting fixtures? How does a photovoltaic panel determine the brightness of a lamp? Firstly, the light source requires sufficient electricity to drive. A 1W light source requires about 300mAH of electricity to light up for one hour. When your photovoltaic panel can input enough electricity to the battery, the battery can provide enough electricity to the light source, and the lamp can light up according to the set brightness; When your photovoltaic panel cannot provide enough power to the battery, the battery cannot provide enough power to the light source, and the lighting fixtures appear dimmed.

So what kind of photovoltaic panels should be used? Firstly, the photoelectric conversion rate of photovoltaic panels should be high. At present, the photoelectric conversion rate of polycrystalline silicon cells (the main material of photovoltaic panels) in large-scale production can reach>18%, and it is considered good if the photoelectric conversion rate of photovoltaic panels applied to solar lamps reaches over 17% in actual measurement; Secondly, the power of the photovoltaic panel should be sufficient. What is sufficient? The electricity generated by photovoltaic panels in a sunny environment can be fully charged within about 5 hours , which is considered sufficient.

Battery

Batteries play a major role in the lifespan of lighting fixtures. At present, the lifespan of photovoltaic modules is basically over 20 years; The lifespan of the light source has also reached 30000 to 50000 hours, with a lifespan of 10 years calculated based on 10 hours of lighting time per day; The theoretical life of the new ternary lithium battery is 1200 times of full charge and discharge, and the life of the Lithium iron phosphate battery can be charged and discharged more than 2000 times, which is equivalent to 6-8 years of service life.

LED light source

The more light sources, the better. As an industry insider, I find it ridiculous to see similar products and promote 500 or even 1000 LED beads used in my solar light source . The power of a solar lamp is supplied by a battery, and the amount of power it can achieve completely depends on the capacity of the battery. When the battery can only light up to 20 watts for 10 hours, whether you have 50 lamp beads or 500 lamp beads, its actual power can only be up to 20 watts.

People who have studied physics know that the longer the distance of the circuit through which electricity passes, the greater the resistance generated. More lamp beads will only produce longer circuits and larger resistance, wasting more electricity. Therefore, the more lamp beads, the better. Enough is enough.

Lamp body shell

The lamp body shell made of die-cast aluminum has higher durability and waterproofing. At present, the shell materials of solar lamps on the market are basically divided into two types: one is a plastic shell, and the other is a cast aluminum shell. The cost of plastic casing is low, but it has a short lifespan and poor waterproof performance when exposed to sunlight outdoors; The die-cast aluminum casing is durable, waterproof, and has good heat dissipation for lighting fixtures. shinetoo outdoor projects use die-cast aluminum casing and must be made of thick cast aluminum casing, but the disadvantage is high cost.

control system

The control system plays a crucial role in the lifespan of the battery and controls the brightness of the lighting fixtures. Firstly, let’s popularize the functions and functions of the control system here. Most solar powered lighting fixtures have functions such as remote control, light control, time control, full light, semi light, and full automatic adjustment, which requires a control system. Due to the limitations of the battery, we know that solar powered lighting fixtures cannot achieve 100% power on like commercial lighting fixtures, and even when the battery capacity decreases during continuous rainy days, it cannot work as it does when fully charged. It requires an intelligent system to adjust the output of the battery according to the battery capacity, allowing the lighting fixtures to work in a good working condition and ensuring their lifespan. The control system we use not only allows the lamp to achieve basic functions such as remote control, light control, time control, full bright, semi bright, and fully automatic, but also requires it to control input and output based on the real-time capacity of the battery, so as not to overcharge or discharge the battery, achieving the protection of battery life and making it more durable.