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What are the factors related to the price of solar street lights?

2021-01-12

The price of solar street lights is determined by the configuration of solar street lights. Solar street lights are assembled products and are divided into nine major components: solar panels, solar batteries, controllers, LEDs, lamps, poles, battery boxes, cables, and embedded The price of Solar Street Light is composed of the unit price of nine major components, so the price of solar street light has a great relationship with what kind of accessories the solar street light chooses; today I will analyze it from the perspective of solar panels and batteries a bit:

1. Solar panels for the price of solar street lights: Solar panels are currently divided into monocrystalline silicon panels and polycrystalline silicon panels on the market. The price difference is about 4 to 5 cents per watt. The price of monocrystalline is higher, and the price of polycrystalline It's cheaper. What is the difference between single crystal and polycrystal?

1. In appearance, the monocrystalline solar panels are black with chamfers; the polycrystalline solar panels are bluish with no chamfers;

2. In terms of conversion efficiency, the conversion efficiency of monocrystalline solar panels is higher than that of polycrystalline solar panels, 17%-18% for monocrystalline solar panels and 16%-17% for polycrystalline solar panels;

3. The strong light effect of monocrystalline solar panels is better, while the weak light effect of polycrystalline solar panels is better;

To sum up, if you choose different solar panels, the price of the whole set of solar street lights will be different, but the current solar street lamp applications, polysilicon solar panels are enough for solar street light power generation systems, there is no need to use monocrystalline silicon Solar panels, at the same time, due to the severe smog in China, it is a good choice to purchase polysilicon panels with better low-light effects;

2. Solar energy storage battery for solar street lamp price: Solar energy storage battery is currently divided into lead-acid battery and gel battery on the market. The price difference is about 1 yuan to 2 yuan per AH. The price difference is relatively large, but with the battery With the development of lead-acid batteries, lead-acid batteries are slowly being phased out by the market. At present, most solar street lights on the market use gel batteries. What is the difference between gel batteries and lead-acid batteries?

1. Divided by electrolyte type, including: alkaline batteries, batteries whose electrolytes are mainly potassium hydroxide aqueous solutions, such as alkaline zinc manganese batteries (commonly known as alkaline manganese batteries or alkaline batteries), nickel cadmium batteries, nickel hydrogen batteries Etc.; acid batteries, mainly using aqueous sulfuric acid as the medium, such as lead-acid batteries; neutral batteries, using salt solution as the medium, such as zinc-manganese dry batteries (some consumers also call them acid batteries), seawater activated batteries, etc.; organic Electrolyte batteries, mainly batteries that use organic solutions as the medium, such as lithium batteries and lithium ion batteries.

2. According to the nature of work and storage methods, it includes: primary batteries, also known as primary batteries, that are batteries that cannot be recharged, such as zinc-manganese dry batteries, lithium primary batteries, etc.; secondary batteries, namely rechargeable batteries, such as nickel hydrogen batteries Lithium-ion batteries, cadmium-nickel batteries, etc.; batteries are used to refer to lead-acid batteries, which are also secondary batteries; fuel cells, that is, active materials are continuously added to the battery from outside when the battery is working, such as hydrogen-oxygen fuel cells, etc.; reserve batteries , That is, the battery does not directly contact the electrolyte when it is stored, and does not add the electrolyte until the battery is in use, such as magnesium-silver chloride batteries, also known as seawater activated batteries.

3. According to the positive and negative materials used in the battery, it includes: zinc series batteries, such as zinc manganese batteries, zinc silver batteries, etc.; nickel series batteries, such as nickel cadmium batteries, nickel hydrogen batteries, etc.; lead series batteries, such as lead-acid batteries Etc.; lithium series batteries, lithium magnesium batteries; manganese dioxide series batteries, such as zinc manganese batteries, alkaline manganese batteries, etc.; air (oxygen) series batteries, such as zinc air batteries, etc.

In summary, it is the best choice to use colloidal batteries for solar street lights, especially in northern areas. Due to the low temperature in winter, the use of lead-acid batteries will seriously affect the efficiency of the batteries in winter. Although the price of colloidal batteries is slightly higher, the use The life span will be longer, and the comprehensive comparison is more cost-effective.

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Anny

Ms. Anny

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