Solar energy, a green energy source, has received widespread attention in recent years.
When everyone first used solar energy, it was probably a solar water heater. Today I will tell you how to choose a useful solar lamp at botanical gardens lights.
Whether solar lights are easy to use or not depends on three points:
1: Brightness, the brighter the light, the more sense of security it gives people.
2: Long battery life, a light that can stay on all night will definitely make people more confident.
3: Life span, no one wants to use it for a few days before it breaks down.
First, let me introduce to you the basic components of botanical gardens lights:
1: Solar photovoltaic panel is the first component that collects sunlight energy and converts it into electrical energy.
Generally divided into two types: monocrystalline silicon and polycrystalline silicon.
Monocrystalline silicon has a slightly higher conversion rate than polycrystalline silicon.
2: Controller. Generally, the electricity emitted by solar photovoltaic panels is unstable. The voltage and current change with changes in sunlight intensity, so a controller is needed to prevent overcharging and overcharging when charging the battery. Over release.
3: Batteries are generally lithium batteries. The more mature products in the market include 18650 and 32650 batteries.
The diameter of 18650 battery is 18mm, and the capacity is generally around 2000mah-3000mah. Be careful if merchants recommend 8000 or 10000mah. It’s basically false propaganda.
The diameter of the 32650 battery is 32mm, which is relatively thick and has a large capacity, usually around 5000mah.
If you need a large-capacity battery, add a few more batteries.
4: The lamp holder is usually an LED lamp holder. The power depends on the size and number of LED chips.
After understanding the above four basic components, let me teach you how to distinguish the quality of a solar lamp.
If a solar lamp is to be bright, there must be enough LED lamp beads. If there are too many LED lamp beads, the battery must be larger, otherwise it will not stay on for long. When the battery is large, the photovoltaic panels must also be large enough to be fully charged.
Let’s take a look at several solar lights on the market and analyze them one by one.
The first type, lamps under 10 yuan
The only advantage of this kind of lamp is that it is cheap, but its performance is not very good.
This kind of lamp is basically a 2000mah 18650 battery, and the size of the solar photovoltaic panel at the door is only 90mm long, and the model is estimated to be less than 50mm.
Generally, this size The power of the photovoltaic panel will not exceed 0.5w, the voltage is 6v, and the current is about 100ma.
It is estimated that it will take 30 hours to fully charge an 18650 battery, and the average amount of light a day is only 5 hours, which means it will take 6 days to fully charge .
The second type: this kind of split type can generally be ma-de larger.
Most manufacturers promote 60w, 100w, 200w or even 500w.
There is currently no unified national standard in the industry. Everyone praises it vigorously, and it is very watery. Most of them need to divide the nominal power of the merchant by 2, and some serious cases need to be divid-ed by 4.
There are several key points for selecting this type of lamp at botanical gardens lights:
- Look at the size of the solar panel, generally 190*220mm, and the power is about 6w
The power of 240mm*350mm is around 10w-12w, and the voltage is 6v
350mm*350mm is generally 15w-18w
350mm*460mm is generally around 25w
The bigger the panel, the better. It also depends on the conversion rate, which is generally around 18%. If it can reach more than 20% of the panel, that would be very good.
- Look at the size of the battery. The larger the capacity, the longer the battery life. The minimum is one battery, and the most is three or four batteries.
- Look at the number of lamp holders. The greater the number, the greater the brightness. Also, depending on the form of the lamp head panel, the lens model will be brighter.
4.Look at the material of the lampshade. There are plastic ones and aluminum alloy ones. Since LEDs generate a lot of heat and need good heat dissipation, aluminum alloy one-piece ones are better than plastic ones.
- It needs to be waterproof and lightning-proof. Generally, solar lights are install-ed outdoors. You need to consider the need for waterproofing in rainy days.
The third type: similar to the street light style on the telephone pole
The key points for purchasing this type of lamp are similar to the second type, which also depends on the size of the solar panel, the number of lamp holders, the material of the casing, etc. Don’t believe the manufacturer’s propaganda about 500w or 1000w, they are not reliable.
Summary: For installation on the walkway and only need a little brightness, you can choose the first option
For those installed in outdoor courtyards or outside the gate, the second or third type is recommend-ed. The power of the solar panel should start from 12w. According to the financial budget, choose the solar light that suits you.
What are the advantages and disadvantages of solar garden lights?
Advantages of solar garden lights.
1. Because the solar panel charges the battery during the day and is activat-ed on time at night, it is green and environmentally friendly, has a high safety factor, has a small operating power, does not cause safety hazards, can also be recycle-d, and causes little pollution to the environment.
2.The light emitted by solar garden lights is soft and non-dazzling, without any light pollution and does not produce other radiation.
3.Solar garden lights have a long service life. The semiconductor chip emits light and the cumulative life span can reach tens of thousands of hours, which is longer than ordinary garden lights.
4.High efficiency, effectively converting solar energy into light energy. Compared with ordinary lamps, the efficiency of converting heat energy into light energy is several times higher.
shortcoming.
1. Instability: In order to make solar energy a continuous and stable energy source, energy storage is one of the weakest links in solar energy utilization. , store the solar radiation energy as much as possible during the clear day for use at night or on rainy days.
2.Low efficiency and high cost: Because of low efficiency, battery capacity needs to be increas-ed. higher cost.
How to buy solar garden lights
How to buy solar garden lights-solar garden lights
Garden lights are usually use-d for courtyard and garden lighting in residential areas, villas and large companies.
Led street lights. There are more styles of garden lights. The selection is mainly based on the architectural style and lighting environment.
In terms of power supply method, they are divided into garden lights and solar garden lights.
If they are easy to access and can ensure safety, they can be used to power garden lights, but Most customers have problems with waste in the construction of embedded wires, and now they generally choose solar garden lights.
Choose solar garden lights as a light source, choose solar panels, batteries and other related knowledge. The demand has be-en expressed.
Here is some information about solar garden lights. You only need to pay attention to the selection and purchase issues. The first is the height.
Solar garden lights are usually in meters. High lamps can easily affect residents’ resting on the second floor. Too short lamps have a small light range and affect the lighting effect.
Lamp posts are usually mad-e of high-quality Q235 steel plates with wall thicknesses ranging from 1 mm to 3 mm, welded and hot-dip galvanized.
The light source configuration can be energy-saving lamps, LED lamps or metal halide lamps, etc.
The concrete can be configur-ed according to user needs, but now the botanical gardens lights The main antique lamp models configur-ed are LED bulb lamps or LED corn lamps.