What Are The Explosion-proof Technologies For Explosion-proof Lithium Batteries?

At the beginning of commercial use of lithium batteries, we often see accident reports about lithium battery explosions. After years of development, there are relatively fewer reports about lithium battery explosions. This is mainly due to the advancement and development of lithium battery technology. the benefits of. So what are the explosion-proof technologies for explosion-proof lithium batteries?

To prevent the explosion of lithium batteries, the first is battery quality control. The battery system at that time was fully able to undergo material modification and electrolyte additives in single cells, as well as excellent battery PACK technology and efficient battery management system to minimize the possibility of battery fire. Especially for some high-end electric vehicles, because a variety of methods are used to ensure the stable operation of the battery, there are very few battery fire incidents.

The second is the correct use of lithium batteries and the use of not over-life. In terms of technical means, the first priority was the development of new materials for each component of the single battery and the improvement of battery PACK technology. The heat balance system is planned in the battery PACK process to ensure that the overall temperature of the stack is uniform, and it will not partially overheat.

1. Explosion-proof skills. Lithium batteries have become the first choice for portable electronic products. These batteries have high capacity density and competitive prices. It is expected that they will remain the mainstream of the market in the next few years. However, lithium batteries have always hidden the risk of blasting, because the use of more and more widespread, blasting incidents will be endless. Now that the explosion-proof circuit and explosion-proof cell skills are already experienced, there should be fewer and fewer blasting incidents.

Explosion-proof technology is a new type of battery product, which is made of materials with high safety factors to effectively prevent battery explosions. The safety feature of the explosion-proof lithium battery pack is its biggest feature. In order to ensure the safety of the lithium battery, we generally plan an explosion-proof valve on the battery shell, which can be destroyed in time when the pressure is too high, release the internal pressure of the battery, and avoid the explosion of the lithium battery pack during thermal runaway.

Because of the improper use of lithium batteries, when the battery is overcharged or exhibits other failures, a large amount of gas will be generated inside the battery due to chemical reactions, which will cause the internal pressure of the battery to increase rapidly and cause an explosion. Therefore, in order to avoid such risks, batteries are generally equipped with explosion-proof equipment.

2. Explosion-proof methods. When charging lithium batteries, the upper limit of the charging voltage and the lower limit of the discharge voltage must be set. The ideal values are 4.2V and 2.4V respectively, so that life, capacity and safety can be taken into account at the same time; other current upper limits are also very high. Needed. The best way is to have a plan for battery maintenance circuit boards. Although it will increase the manufacturing cost of lithium batteries, it is necessary for the safe use of lithium batteries. All regular lithium battery manufacturers cannot avoid this plan.

The maintenance of lithium batteries should include three items: upper limit of charging voltage, lower limit of discharge voltage, and upper limit of current. In the general lithium battery pack, in addition to the lithium battery core, there will be a maintenance board, this maintenance board mainly provides these three maintenance. However, these three maintenance items of the maintenance board are obviously not feasible. Global lithium battery explosion incidents are still frequent. To ensure the safety of the battery system, the cause of the battery explosion must be analyzed more carefully.

The above is how lithium batteries are explosion-proof, and the explosion-proof skills and methods of lithium batteries. In our daily life, we only need to pay attention to the lithium battery will not become a time bomb in our hands.