2021-10-10 16:13:32
Power bank is a carrier that can store electric energy. Therefore, he must abide by the law of conservation of energy, which means that the electric energy stored in the power bank can not be converted 100% effectively. If you can see in the market claimed to be able to carry out 100% conversion of the power bank, it is basically false propaganda. Because there is no power bank that can achieve 100% energy conversion. The nominal charging voltage of the power bank is 3.7V. The standard input voltage of mobile phones and other products is 5V, which means that the power bank endurance is a process of boosting output to mobile phones and other devices.
The algorithm of the actual output of the power bank is based on the capacity of the power bank × Power bank conversion efficiency × Mobile phone charging conversion efficiency × Using this formula, the output power of power bank can be calculated accurately. After such calculation, we can conclude that the conversion efficiency of general power bank on the market is between 80 ~ 88, and the best can reach 90%, which is the data obtained in a very ideal environment.
Therefore, when we use the power bank in our daily life, it is impossible to achieve 100% conversion rate. So when you buy power bank, you must see how much its rated output is. If it does not indicate the rated output, then we can also calculate through the above calculation formula. At present, the development of power bank is still in a high-speed stage, but the current level of science and technology still needs to be improved, and we still need to follow the law of conservation of energy to design power bank.
So when we choose the power bank, we must calculate the conversion efficiency of the power bank. If the conversion efficiency of a power bank is extremely low, then it must be an unqualified power bank. In our future use, there may be some security risks. In order to facilitate our use, we must only carefully choose the power bank.