Views: 542 Author: @Rice Solar Lighting Publish Time: 2022-03-20 Origin: www.ricesolarcom
This is the most commonly used type of battery in solar street lights, with the main advantages of stable voltage and low price. However, it has a low specific energy, requires a larger volume to store the same energy, and is not resistant to low temperatures, with a service life of about 300-500 deep cycles at normal temperatures. Although daily maintenance may require more frequent attention, it is still widely used due to its price advantage. However, there are also claims that lead-acid batteries have been eliminated in the street light industry due to various limitations, and the specific market application situation depends on it.
This is an upgraded version of lead-acid batteries, using colloidal electrolyte instead of sulfuric acid electrolyte, which is superior to ordinary lead-acid batteries in terms of safety, storage capacity, discharge performance and service life. Gel batteries can be used in the temperature range of -45℃~65℃, with good low temperature performance, and are suitable for high-altitude cold areas in the north. Its service life is 1.5 times or even more than that of ordinary lead-acid batteries, but the price is relatively high.
This type of battery has high specific energy, small size, fast charging, but the price is relatively high. The nominal voltage can reach 3.6-3.8v, the energy density is relatively high, the voltage platform is high, the tap density is high, the cruising range is long, the output power is large, and its deep cycle number is about 500-800 times. However, under high temperature conditions, the ternary materials of the ternary lithium battery will decompose at 200℃, produce violent chemical reactions, release oxygen atoms, and are very likely to burn or explode under high temperature.
This is a lithium-ion battery that uses lithium iron phosphate (LiFePO4) as the positive electrode material of the battery. It has the advantages of high specific energy, small size, fast charging, strong and durable, and good stability. Its deep cycle charging number is generally 1500-2000 times. Under normal use, a set of lithium iron phosphate ion batteries can generally be used for 8-10 years and can be used in an environment of -40℃~70℃. Despite their high price, lithium iron phosphate batteries excel in terms of large capacity and stability.
High-purity silicon materials can reduce the obstruction of impurities to electron transmission, reduce the internal loss of the battery, and improve the stability and service life of the battery. Taking monocrystalline silicon as an example, the higher the purity, the more complete the crystal structure, the longer the minority carrier life, and the slower the decline of the battery's photoelectric conversion efficiency.
Good manufacturing process can make the battery electrodes contact well, reduce resistance, and further improve stability.
The aging resistance and light transmittance of packaging materials such as EVA (ethylene-vinyl acetate copolymer) have a great impact on battery life. Using high-quality EVA can maintain good bonding and optical properties under long-term light and temperature changes, and prevent the battery from being corroded by water vapor, oxygen, etc.
Improper control of parameters such as lamination temperature, pressure and time during the packaging process may cause defects such as bubbles and cracks inside the package, exposing the battery to the external environment, which will accelerate aging.
Light intensity and time: Long-term high-intensity light will cause the battery to decay severely and reduce the efficiency of the battery. For example, in some desert areas in the Middle East, the battery will age faster than in places with weak light intensity. If the temperature is too high, the chemical reaction inside the battery will accelerate, leading to aging and performance decline.
We RICE SOLAR MANUFACTURE use brand new lithium iron phosphate batteries and pay great attention to the requirements of batteries. We will conduct strict charging, discharging and aging tests on the batteries used in each solar lamp. We will only install them on our lamps after ensuring that there are no problems. Because the battery is the most important part of the solar lamp, if there is a problem, the after-sales service will be a headache for consumers. If a bad battery is used, accidents may also occur. So I insist that every exported lamp can ensure safety, to ensure quality and safety to the greatest extent. Be the most unique and safest solar lamp manufacturer in China.
