Why 18650 Lithium Batteries Have An Explosion History

Most of the 18650 batteries are packaged in a steel case. Due to the lack of protection, batteries that do not pass the quality will suddenly increase their internal pressure in the case of overcharge (overcharge). When they exceed the withstand value, they will explode. Problems such as short circuit, high temperature, or crushing or puncture of the battery may cause the battery to explode.

30After 30 years of development, the 18650 battery preparation process has been very mature, in addition to greatly improved performance, its safety is also very perfect. In order to avoid the explosion of the sealed metal casing, 18650 batteries are now equipped with a safety valve on the top. The safety valve is standard on every 18650 battery and is the most important explosion-proof barrier.

When the internal pressure of the battery is too high, the safety valve on the top of the battery will open the exhaust and reduce the pressure to avoid explosion. However, after the safety valve is opened, the chemical substances leaking out of the battery will chemically react with oxygen in the air under high temperature conditions, and a fire may still occur. In addition, some 18650 batteries now come with a protection board, which has functions such as overcharge, overdischarge and short circuit protection, and has very high safety performance.

The previous explosions of mobile power were all caused by unscrupulous manufacturers using substandard and inferior 18650 batteries to save costs, or even second-hand waste electricity. At present, the 18650 batteries produced by major battery manufacturers such as Panasonic, Sony, Samsung, etc. are actually very safe, and the 18650 battery usage rate is very high. We can properly use them in daily use and avoid short circuits, damage or damage. If the temperature is too high, there is no need to worry about the battery exploding. We cannot overthrow a boat with a bamboo pole and characterize the safety of 18650 with individual inferior products.

Summary: In fact, for lithium batteries, the reason for the explosion is understandable. After all, in the past, the grasp of this stability was not so strong, but 18650 as a lithium battery with very high performance contrast, Its application will definitely be more and more widely. After all, for this indispensable battery, 18650 lithium battery is the best choice.