18650 the power of lithium battery explosion have how old?

Source: 2020 - 04 - 01 to hits: 18650 times the power of lithium battery incineration blasting have how old? 18650 lithium-ion batteries due to improper use 18650 lithium-ion batteries in charging and discharging process, produces the danger of explosion. Especially in the case of use ( Such as heat, overcharge, short-circuit, vibration, kneading, etc. ) , the battery will be burning, explosion, even injuries. Therefore, research the explosion mechanism of lithium-ion batteries is of great significance to enhance the security of a lithium ion battery. Lithium batteries usually contains 18650 repair circuit board, mainly in order to avoid in the discharge, lithium-ion battery as a power energy conversion device, the chemical energy of the reaction must have a lot of energy, this energy can slow release is safe, if the violent reaction of the situation will become very unstable. First introduces the high temperature and high heat, then happen a lot of gas in the sealed environment will happen too much internal pressure and expansion, internal pressure condition and the increase of feed speed ( Like a pressure cooker principle is the same) Expands spiral shell restrictions will break the balance, tear shells, and the shell after separating, many of the natural gas found expression, suddenly vent, but in fact is a risk, like a flat tire blowout is tyre, visceral sensation bleeding is close to the people, examples of ribs are broken. It is reported that samsung mobile phone within short circuit died on the spot, most of lithium ion battery, explosive power is big, should pay attention. There have been several case, lithium batteries a lithium battery factory in shenzhen has had an explosion it began investigating the material is aging workshop semi-finished lithium battery. Its parent company also suspend its license, the reason is' battery defect caused by the fire caused by spontaneous combustion of accumulation ', someone says this is because the battery is too hot in shenzhen, can handle. In addition, according to the survey, on March 22, factory warehouse fire, the fire until the next morning to calm, caused an economic loss of 20 million yuan. The two fire less than four months apart. According to the calculation, a complete 2. 6 ah 18650 ternary lithium battery to charge 2. 6 * 3. 65 * 3. 6 = 34. 164 kj。 On the other hand, the gun muzzle energy is about 2. 2000 kilojoules. 1 joule is equal to 1 Newton force makes an object moving towards the direction of the force 1 meters of the work done, so it's easy to kill pistol within 50 meters of the enemy. Considering the tesla with more than 7000 pieces of 3. 4 ah 18650 lithium batteries. As long as it is lithium battery, there is a risk of explosion, but the risk probability is very small. But, the bigger the 18650 lithium ion battery, the greater the explosive. As a manufacturer of electric sweeper, we refused to use three yuan battery, we choose safer lithium iron phosphate batteries, also support the normal manufacturer production car BMS ( Battery management system) 。