Wide-temperature lithium battery generally refers to the higher temperature lithium-ion batteries, so if an explosion occurs during use, it will have what effect on the battery? We know that a battery cell is usually ternary lithium battery. And now there are many different cells, such as some of our common ternary lithium batteries used graphite negative electrode, this type of material for the negative electrode, lithium primary batteries used lithium cobaltate material for the positive electrode. So wide temperature lithium battery will explode under sustained high temperature? Here to share with you the relevant views.
As the materials used in the current battery cells, including ternary lithium-ion batteries are lithium cobaltate, lithium iron phosphate and other materials to do the positive electrode. So ternary lithium battery in low temperature when the probability of explosion is very small. But most of the current market for wide temperature lithium batteries will use to lithium cobaltate as the positive electrode. And lithium iron phosphate is based on ternary lithium to do a negative electrode; and lithium cobaltate is to do a positive electrode; and ternary lithium ion is to do a negative electrode rather than a positive electrode. This leads to a change in its battery structure.
To solve the safety problem of wide temperature lithium batteries, the key is to improve safety. First of all, the battery cell should be strictly controlled, which is also a guarantee of battery performance and can effectively avoid internal short circuit or overcharge during the operation of the battery, as well as to prevent the occurrence of high internal temperature of the battery, resulting in battery explosion. And in daily use should also pay attention to the safe life of the battery and avoid battery overheating, overcharging and other situations. Next, we should pay attention to the impact of temperature on the battery. The battery temperature is too high for our own life safety will also pose a threat. Therefore, if the battery products want to be better used in our daily life, we should also pay attention to the battery temperature control work.
From the safety point of view, when the battery temperature is too high, lithium-ion batteries may occur thermal runaway combustion phenomenon. This is because the lithium ion contained in the lithium-ion battery is mainly composed of liquid droplets, the more liquid droplets, the higher the temperature of the lithium-ion battery, if the lithium ion in the electrolyte excessive migration, diffusion will make the lithium ion irreversible migration leading to battery short-circuit spontaneous combustion, etc.. In addition, the battery in a long period of continuous high temperature operation is likely to cause the battery material decomposition and activity decline, thus accelerating the short circuit leading to internal battery fire or explosion. Therefore, from a safety point of view, the use of high temperature lithium-ion batteries must be turned off in a timely manner. In addition, if the temperature is too high, it is easy to cause internal short-circuiting and thus cause a fire and explosion. In addition, from the safety point of view of the power battery, if not a comprehensive safety inspection and use of thermal runaway state of the lithium-ion battery is likely to explode.
In fact, the wide temperature lithium battery is safer to use because it meets the safety requirements of lithium-ion batteries in the GB18483-2001 Safety Technical Specification for Lithium-ion Batteries, which is more in line with the safety standards. But because it is a new product, there is no clear national standards and industry standards to guide the development of this technology, so we need to combine the use of specific understanding. In the use process need to avoid contact with high temperature, static electricity, over discharge, discharge and other dangerous factors, otherwise it is easy to cause the core explosion. So in daily use must pay attention to the safe use of wide temperature lithium batteries as well as safe storage and use.
The above is about whether the wide temperature lithium battery will explode and the wide temperature lithium battery related content.
Post time: Oct-17-2022