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Explosion-proof lithium battery explosion-proof technology what
772 2022-12-19
In the early days of lithium battery commercialization, we often saw reports of incidents related to lithium battery explosions. After years of development, reports of lithium battery explosions have become less frequent. This is mainly due to the progress and development of lithium battery technology. What is the explosion-proof technology of explosion-proof lithium battery?
To prevent fire and explosion of lithium batteries, the quality of batteries should be controlled first. Battery systems at the time were able to minimize the possibility of a battery fire through data modification and electrolyte additives in a single cell, as well as excellent battery PACK processes and efficient battery management systems. Especially for some high-end electric vehicles, battery fires are rare due to the various means used to ensure the stable operation of the battery.
The second is the correct use of lithium batteries, do not exceed the life. Most important in terms of skills and means is the development of new materials and improved battery pack processes for each component of a single cell. In the battery pack process, a heat balancing system is planned to ensure that the entire temperature of the battery pack is uniform and that no part of the battery pack overheats.
Explosion-proof technology:
Explosion-proof technology, lithium battery has become the preferred battery of portable electronic products, high capacity density, competitive price, is expected to remain the mainstream of the market in the next few years. Lithium batteries, however, have always been a hidden risk of exploding, because the more widely they are used, the more explosive events occur. Now explosion-proof circuit and explosion-proof cell technology are very mature, the explosion should be less and less.
Explosion-proof technology is a new type of battery products, made of high safety factor materials, can effectively inhibit battery explosion. The safety of explosion-proof lithium battery pack is its biggest feature. In order to ensure the safety of lithium battery, we usually design an explosion-proof valve on the battery shell. When the pressure is too high, it will be damaged in time to release the pressure inside the battery and avoid the explosion of the lithium battery pack when it is out of control.
Due to improper use of lithium batteries, when the battery is overflushed or has other faults, a large amount of gas will be generated inside the battery due to chemical reactions, resulting in a rapid increase in internal pressure and explosion. Therefore, in order to avoid such risks, batteries are usually equipped with explosion-proof equipment.
Explosion-proof method:
When charging a lithium battery, you must set the upper limit of the charging voltage and the lower limit of the discharging voltage. The ideal values are 4.2V and 2.75V, respectively, in order to consider life, capacity and safety simultaneously; Other current limits are also necessary. The best way is to plan the battery maintenance circuit board. Although this will increase the manufacturing cost of lithium batteries, the safe use of lithium batteries must be ensured. No conventional lithium-ion battery manufacturer‘s products are immune to this plan.
Maintenance of a lithium battery includes the upper limit of charging voltage, lower limit of discharging voltage, and upper limit of current. In general, in addition to the lithium battery, the lithium battery pack also has a maintenance board. The maintenance board provides the following three maintenance items. However, the maintenance of these three maintenance boards is obviously not good. Exploding lithium batteries are still a frequent occurrence around the world. To ensure the safety of the battery system, we must analyze the cause of the battery explosion more carefully.
The above is how to prevent the lithium battery explosion, as well as the lithium battery explosion-proof skills and methods. As long as we pay attention in our daily life, lithium batteries will not become a time bomb in our hands.