Why does the power bank explode or burn?

The recent news reports that some consumers’ mobile power supplies exploded or burned, and the report of a flight attendant who was electrocuted while charging IPONE5, all highlighted people’s safety concerns. So, why do mobile power sources explode or burn? What are the reasons? The author will discuss with you the important factors of what can explode! There are two important aspects that affect the safety of mobile power sources: battery and PCB board. 1.Battery, the battery is the core of the whole mobile power supply. There are two batteries, one is 18650 battery, polymer battery, which is a kind of latest high-end mobile power mobile power using polymer battery, polymer battery is safer than 18650 battery , Generally, the batteries produced are also 18650 batteries. A good lithium polymer battery does not contain liquid electrolyte and has no battery leakage problems. The battery can be bent and deformed, has a long service life and high safety. If there is a quality problem, it will only burn but not explode. But on Taobao, the capacity of the ten or twenty mobile power banks is marked as 10000ma. Consumers should be careful, because this kind of business is not a virtual capacity or cheap junk batteries. So-called junk batteries are actually buying used batteries. . This battery has been used, it is aging, if you use it more, it will have high heat, in a high heat environment, the expansion coefficient of the battery will increase, this time may explode. 2. PCB board: PCB board is the protector of the battery, which can ensure the battery's voltage stability, current stability, overload, over current, over charge, over temperature and short circuit protection. A good board can protect the battery to the greatest extent, otherwise problems such as explosion or burning will occur. Therefore, whether the mobile power supply will explode or burn depends on the quality of the materials. I remind everyone here not to buy garbage products for cheap. The author recommends to you that the power bank can be pressurized, the price is cheap, the imported high-quality A-class battery and PCB board are used, so that you can buy with peace of mind and use it at ease! Statement: Some pictures and content of articles published on this site are from the Internet, if there is any infringement Please contact to delete the previous article: What are the current battery life problems to solve?