integrated solar lamps---website: www.qyjtech.com
Talking about precautions for online shopping integrated solar lamps
The integrated solar light is a common thing in our daily life. It is widely distributed in urban commercial squares and city main orders. Added a lot of fun to our lives.
Today's social e-commerce is developed, many friends buy products directly online, but online purchase of industrial products such as integrated solar lamps and consumer electronic products requires professional personnel to identify good and bad, and there are many pits that need to be avoided . Briefly speaking today, how to spend the right budget to buy the right integrated solar light products.
Integrated solar light
First of all, we need to know what constitutes a solar lamp.
1. Composition of integrated solar lamps
Light board (including lamp beads, aluminum substrate), solar panel (sub-polysilicon and monocrystalline silicon), lithium battery, controller.
Second, we have to set the power we want to use ourselves.
2. Use your own power calculation (formula: P power = U voltage I current)
Lighting power, lighting time, battery life in rainy days
Suppose, we want to use a 30W lamp, and the lighting time is 8 hours a day, we can get:
30W * 8H = 240W (30W lights up every day for 8 hours to get power consumption)
In this way, the capacity requirements of the storage battery pack that should be configured can be obtained. Generally, below 20W, a 3.2V iron-lithium single string / 3.7V ternary single-string battery pack is used. For 20 ~ 40W, more than 9.6V (iron-lithium 3-string) /12.8V (Iron lithium 4 string) /11.1V (three yuan three string) battery pack, above 50W use 24V battery pack (not much here, because it is rarely used), we use a 3 yuan 11.1V lithium battery pack to calculate:
240W / 11.1V = 21.62A, it is recommended to take an even integer value, 11.1V / 22A battery pack is required.
The battery capacity comes out, and then calculate the power generation. The photovoltaic panel is usually 18V below 120W and 36V above. Pay attention to the voltage. Generally, the average daily sunshine time is 3 to 5 hours (the noonday sun is full, and the morning and afternoon are weak values).
22A lithium battery / 5H (sunlight time) * 18V (solar voltage) = 80W (solar panel)
Lamp power 30W, need to configure 22A11. 1V lithium battery, need to match 80W solar panel.
3. Budget plan
1. The solar panel is divided into polycrystalline and monocrystalline materials. The selling price of polycrystalline (1.5 yuan-2 yuan / W), single crystal is 1-2 yuan.
2. The light source is determined according to the current popular style
3. Lithium batteries usually cost 1.5-1.8 yuan / A for 3V, and 8-11 yuan / A for 11.1V.
4. The controller varies from 40-60 yuan
This is based on the price adopted on 30W power. As a reference for everyone, the price of each integrated solar lamp factory is different.
Integrated solar light
4. Frequently Asked Questions
1. The battery is bigger, will the lighting time of the integrated solar lamps be longer?
The actual power generation can't keep up, no matter how big the battery is, it won't play the role of battery life. The lithium battery and solar panel should be linked to adjust the parameters. Simply adjusting one parameter is to wipe the side ball.
2. If there are many lamp beads, will it be brighter than less lamp beads?
No, brightness is related to power and light efficiency.
3. Is the lithium iron battery better than the ternary lithium battery?
In theory, the cycle life is true, but in practice, most of the lithium iron batteries used in the lighting industry are used batteries.
4. People have high power, why is the configuration lower than yours?
Virtual standard parameters are mostly virtual standard values on the Internet. It can be calculated by the formula. The ever-changing and ever-changing sect pays attention to science.
Online shopping for integrated solar lamps requires more comparisons and more inquiries. Of course, do n’t be afraid of being scammed. If you do n’t understand it, you must first figure it out yourself.
