What are the differences between ternary power lithium-ion batteries and lithium batteries

Ternary power lithium battery refers to a lithium battery using lithium nickel cobalt manganese oxide (li-Lon (nicomn) o2) as the cathode material, and the precursor product of the ternary composite cathode material. Nickel salt, cobalt salt, and manganese salt are raw materials, and the internal ratio of nickel, cobalt and manganese can be adjusted according to actual needs. The ternary lithium battery has a higher energy density and a higher voltage, so a battery pack of the same weight has a larger capacity, and the car travels farther and faster. But its disadvantage is poor stability. If the internal short circuit or the cathode material meets water, a fire will occur. Therefore, the general 18650 battery will have a layer of steel protection, because the Tesla battery pack is composed of about 7 million 18650 batteries, so although Tesla gave the battery pack full protection, but in extreme collision accidents However, there is still a risk of fire. The reason is that when these two materials reach a certain temperature, the ternary lithium material is analyzed at a lower temperature of about 200 degrees, and the lithium iron phosphate material is analyzed at about 800 degrees. In addition, the ternary lithium material has a stronger chemical reaction, releasing oxygen molecules, rapidly burning the electrolyte at high temperatures, and triggering a chain reaction. Simply put, ternary lithium is more likely to catch fire than lithium iron phosphate. However, it must be pointed out that we are referring to materials, not batteries that have become finished products. Lithium iron phosphate batteries should be more stable. Even if it is punctured or short-circuited, the battery panel will not explode and burn. It will not catch fire when heated at 350°C (the ternary lithium battery cannot stay still at 180-250°C). Therefore, in terms of safety performance, lithium iron phosphate batteries are slightly better. Due to the potential safety hazards of lithium ternary materials, manufacturers are also working hard to prevent accidents. Based on the easy pyrolysis characteristics of ternary lithium materials, processing manufacturers will invest a lot of energy in overcharge protection, overdischarge protection, overtemperature protection, and overcurrent protection. Tesla has a battery management system that can better manage ternary lithium batteries with higher activity and is full of confidence in safety. Of course, with the continuous research and development of battery companies, automobile companies and professional battery management companies in the battery field, more companies can also achieve excellent battery management, which will greatly improve safety. Ternary refers to the name of the positive quality in lithium batteries. The ternary material is nickel cobalt manganese acid plum (nicomn) o? The precursor products of ternary composite cathode materials are mainly nickel salt, cobalt salt and manganese salt. The content of nickel, cobalt and manganese can be adjusted according to actual needs. 18650 refers to the external size of the cylindrical battery: 18 refers to the diameter of the battery 18.0mm 650 refers to the height of the battery 65.0mm, which is used more on mobile phones. Lithium batteries are relatively common, and most of the batteries on the market are not specific here. Ternary refers to the name of the cathode material for lithium batteries. The traditional battery cathode material is lithium cobalt oxide CoO_2, the ternary material, namely lithium nickel cobalt manganate (NiCoMn) O_2, is the precursor of the ternary composite cathode material made of nickel salt, cobalt salt and manganese salt. product. The ratio of nickel, cobalt, and manganese in the battery can be adjusted according to actual needs. The battery with ternary material as the positive electrode is safer than the lithium cobalt oxide battery, but the platform is too low. When used on a mobile phone (the cut-off voltage of a mobile phone is generally around 3.4V), there will be a distinct feeling of insufficient capacity. 18650 refers to the external dimensions of the cylindrical battery: 18 refers to the diameter of the battery 18.0mm 650 refers to other positive electrode materials with a battery height of 65.0mm except ternary, lithium cobalt acid, lithium manganate, lithium iron phosphate, and positive electrode materials nca. Lithium batteries refer to a wide range of lithium materials and can be called lithium batteries. According to the scientific name, the lithium battery we usually say should be called lithium battery/lithium secondary battery and the corresponding negative electrode material. Energy density is the core element. Energy density refers to the energy stored in a certain space or mass. The energy density of a battery is the energy released by the uniform unit volume or mass of the battery. Battery energy densityu003dbattery capacity*discharge platform/battery thickness/battery width/battery length, the basic unit is Wh/kg (watt hour/kg). The higher the energy density of the battery, the more energy can be stored per unit volume. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to save the 48V lithium battery?