Advantage & Disadvantage of All in One LED Street Light
Integrated all in one solar street light has become as an important role of outdoor lighting. It is getting more and more popular recent years. While Is it suitable for all demand and have good performance in all over the regions? which kind of solar light should you use? That is a good question!
The main reason why it gets more popular is for its compact design. The lithium battery and solar controller are built inside of light fixture, and solar panel are attached on the top of fixture. It is very easy to be installed at any places as long as there is sunshine. Can be installed on wall, kind of poles, or any other matersial which can be mounted. It is an very good choice to use this solar light to light up night for the places where is out or short of electricity. Normally there is a motion sensor which is in order to save power consumption: Light will work at 30% power when there is nobody and sensor is not triggered, and it will power up to 100% power which will last 20 ~60 seconds as program sets once sensor is triggered when someone passes by. AIO (All in one solar) street light is very suitable to be used for these countries or regions where there is plenty of sunshine all over the year, like most of middle east countries, South America, South Africa and some Asia countries.
A coin has two sides. There are some disadvantages because of the compact all in one design.
A: POWER LIMITATION OF SOLAR PANEL
The solar panel is locked tightly in the light fixture. so it cannot be modified easily to have a higher power in order to improve its lighiting performance. At moment on market, the solar panel is kind of too small comparing with its LED light power. For example, the LED power is 30W as rated power while the solar panel is only 40W or 45W. As we know the effective sunshine duration is only 5 hours around on average on the world. That will cause the problem that there is not enough power generated from solar panel to support led light to work with high power output for long time continuesly.Because of this reason, It is necessary to use the motion sensor for all models of such all in one solar street light in order to save energy.
(How to calculate the the power relation between solar panel and led light? check here.)
B: DIRECTION/ANGLE LIMITATION
Because of all in one design, the solar light is completely fixed on the top of light. it cannot be adjusted its angle or direction, That will cause two problems as below.
1: Solar panel of all in one model cannot be rotated to meet the best direction to make use of sunshine as efficient as possible. From the comparing picture as below, we can see there is NO any problem if we use HELIOS model, HELIOS's solar panel can be adjusted very easily and freely.
|All in One Solar LED Street Light||
All in TWO Solar LED Street Light
Comparing on different latitude
All in One Solar LED Street Light All in TWO Solar LED Street Light
How to calculate the power concumption of solar light?
There are many types of solar light on market like solar street light, all in one solar led batten light, or solar flood light.It is same way to calculate the power. While most of cilents do not know how to judge whether the battery is matching with the lighting power concumption or not, then only can rely on the answer from salesman of suppliers. What's more, there is many salesman who answer clients' answer too facilely just in order to sell their products to client asap which causes a lot of compliant finally.
For example. for same power 30W solar led street light, why does some solar street light have battery 20AH, but why other all in one solar street light have 16AH? what makes the difference? which one suits your requests more? Let's learn it today.
How can i know the power consumption of your solar led batten light? or solar led flood light per night?
Let's take Helios all in two 30W solar led street light as example. So you will know how to decide it.
As the default setting, HELIOS 30W is working with 100% power for first 6 hours and 50% power for next 6 hours without sensor. Then theoretically the power consumption per night is :
30W*6H +30W*50%*6H = 270WH,
and we need to include the power consumption of system, it is about 5% around. so we can get the total consumption roughly is 270WH*(1+5%)=283.5WH.
That means only the power of battery capacity is more than 283.5WH, the light will work as the default setting, or the light will stop working earlier. How to choose and calculate the right battery capacity? Based on above calculation, the power concumption is 283.5WH, normally the system for 30W is 12V for the battery. So the battery capacity should be:
As we know the D.O.D (Depth of Discharge) of lead acid battery is 60-70% , so if this all in two solar led street light is using lead acid battery, the capacity should be: 12V 40AH (24/0.6=40). If lithium battery with D.O.D 100%, the battery capacity should be 12V 24AH. Normally Auroras always put more capacity as backup in order to extend lifetime of battery. So when the power is 30W, Auroras is using 36AH battery. In above example, if the lighting mode is 50% power for 12 hours with sensor function, the power consumption will be much less. As long as we know how to calculate it, we will know whether the specification is reasonable or not. So we need to choose the right battery capacity based on light consumption. No need to rely on supplier's description.
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