How is the lithium battery explosion-proof? Lithium battery explosion-proof skills and explosion-proof methods. Lithium batteries have always harbored the risk of bursting. Because the use of more and more widespread, blasting incidents are also numerous. In fact, through the correct planning of the lithium battery pack system and cell level determination, lithium-ion batteries are able to do very safe. Now that the explosion-proof circuit and explosion-proof cell technology are sophisticated, the number of bursting incidents should be reduced.
How is the lithium battery explosion-proof? In order to reduce the risk, scientists have invented materials such as graphite and lithium cobaltate to store lithium atoms. The molecular structure of these materials, forming a nano-scale lattice of tiny cells, used to store lithium atoms. In this way, even if the lithium battery shell breaks and oxygen enters, the oxygen molecules will be too large to enter these fine cells, so that the lithium atoms can avoid the touch of oxygen and burst.
To prevent lithium batteries from catching fire and bursting, the first thing is the quality control of the battery. At that time, the battery system can be fully modified by the single cell material and electrolyte additives, as well as excellent battery PACK process and efficient battery management system to minimize the possibility of battery fire. Especially some high-end electric vehicles, because the choice of a variety of means 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 do not over life use. In terms of skills, the primary focus is on the development of new materials for each component of the single cell battery and the improvement of the battery PACK process. In the battery PACK process planning heat balance system to ensure that the overall temperature of the stack is uniform, not to part of the overheating.
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1, explosion-proof skills, lithium batteries have become the battery of choice for portable electronic products, the battery capacity density is high, the price is competitive, and is expected to remain the main stream of the market in the next few years. However, lithium batteries have always harbored the risk of explosion, because the use of more and more extensive, explosion events have emerged. Now the explosion-proof circuit and explosion-proof battery cell skills have been sophisticated, blasting incidents should be able to be less and less.
Explosion-proof technology is a new type of battery products, the choice of high safety factor material manufacturing, effective containment of battery burst safety battery. The safety features of the explosion-proof lithium battery pack is its most important feature. In order to ensure the safety of the lithium battery, we will generally plan an explosion-proof valve on the battery case, which can be destroyed in time when the pressure is too high, releasing the pressure inside the battery and avoiding the bursting of the lithium battery pack in thermal runaway.
Because of the inappropriate use of lithium batteries, when the battery because of overshoot or present other faults, its internal chemical reaction will be a large number of gas production, resulting in a rapid increase in internal pressure of the battery, resulting in a burst incident. Therefore, in order to avoid such risks, the battery is generally set up with explosion-proof equipment.
2, explosion-proof methods, lithium battery charging must set the upper limit of charging voltage and lower limit of discharge voltage, the ideal value of 4.2V and 2.4V, respectively, to be able to take into account the life, capacity and safety; other current limit is also very necessary. The best way is to have a battery maintenance circuit board planning, although it will increase the manufacturing cost of lithium batteries, but the safe use of lithium batteries is necessary, all regular lithium battery manufacturer's products are exempt from this planning.
The maintenance of lithium batteries should include: the upper limit of charging voltage, the lower limit of discharge voltage, and the upper limit of current three. General lithium battery pack, in addition to the lithium battery core, there will be a maintenance board, this maintenance board is to provide the first three maintenance. But the maintenance board of these three maintenance is obviously not, the global lithium battery burst events are still frequent, to ensure the safety of the battery system, the cause of battery burst must be more careful analysis.
The above is how the lithium battery explosion-proof and lithium battery explosion-proof skills and explosion-proof methods. Daily life, we just need to pay attention to, lithium batteries will not be in our hands to become a time bomb.
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