With the development of technology, more and more new technologies are being applied to our peripheral products, and solar power bank is one of them. power bank I believe that everyone has it, and it is one of the essential items for living or going out. However, solar power bank does not dare to say that everyone has it. Although it has come out for some time, recently, beebeejump has also developed a solar power bank, which can be charged by photovoltaic charging and DC cable.
First of all, we need to know what is a solar power bank? As the name implies, solar power banks must be converted into electricity by the use of the sun’s light. The charging principle is to convert the energy of sunlight into electrical energy and store it in the battery of the solar mobile power source. In the middle, solar panels are needed to convert light energy. The main materials used include: monocrystalline silicon solar panels, polycrystalline silicon solar panels, amorphous silicon solar panels, and multi-component solar panels.
What is the photoelectric conversion rate of solar panels of different materials? Monocrystalline silicon solar panels have the highest photoelectric conversion, conversion efficiency of 15%-24%, and high cost. Since monocrystalline silicon is generally packaged with tempered glass and waterproof resin, it is durable and has a service life of up to 15 years. Up to 25 years. The photoelectric conversion efficiency of polycrystalline silicon solar panels is about 12%, the cost is lower than that of single crystal silicon, and the service life is also lower than that of single crystal silicon. Amorphous silicon solar panels have low consumption of silicon materials and lower power consumption. Its main advantage is that it can generate electricity in low light conditions. However, the main problem of amorphous silicon solar panels is that the photoelectric conversion efficiency is low, the international advanced level is about 10%, and it is not stable enough. As time goes by, the conversion efficiency will be continuously degraded. The mainstream product application situation in the market through the description of top-ranking solar power banks, we see that the mainstream solar power bank products are divided into two types, one is ordinary charging + solar charging double-charge version (generally Equipped with a lithium polymer battery), one is an instant charging version that only supports solar single charge.
The dual-charge version of the solar power bank basically claims to use crystalline silicon or monocrystalline silicon solar panels, but there is little mention of the conversion efficiency of light energy (estimated that most ordinary consumers will not understand too deep ), occasionally encountering a introduction to conversion rate, product promotion also mentioned that its conversion rate can reach more than 20%. Pure solar single-charge version is generally used to connect multiple solar panels together (3-5 pieces or so, the more the price is more expensive), can be folded, the claimed photoelectric conversion efficiency is also more than 20%, Compared with the double-charge version, the main difference is that there are more than a few solar panels. The light-receiving area is larger, and the material is also mainly made of crystalline silicon.