What are the advantages and disadvantages of ternary polymer lithium batteries? How to maintain

Ternary polymer lithium battery refers to a lithium battery that uses lithium nickel cobalt manganate (Li (NiCoMn) O2) as the cathode material. The precursor product of the ternary composite cathode material is nickel salt, cobalt salt, and manganese salt. As raw materials, the ratio of nickel, cobalt and manganese inside can be adjusted according to actual needs. Ternary lithium batteries have greater energy density, but their safety is often questioned. The reason for this is that even these two materials will be analyzed when they reach a certain temperature, the ternary lithium material will be analyzed at a lower 200 degrees, and the lithium iron phosphate material will be analyzed at about 800 degrees. In addition, the chemical reaction of the ternary lithium material is more intense, it will release oxygen molecules, and the electrolyte will burn rapidly under high temperature applications, and a chain reaction will occur. To put it simply, ternary lithium materials are more likely to catch fire than lithium iron phosphate materials. But it should be noted that we are talking about materials, not batteries that have become finished products. Because ternary lithium materials have such potential safety hazards, manufacturers are also working hard to prevent accidents. According to the easy pyrolysis characteristics of ternary lithium materials, manufacturers will do a lot of overcharge protection (OVP), over discharge protection (UVP), over temperature protection (OTP), and over current protection (OCP). effort. Therefore, the spontaneous combustion incident should consider whether the manufacturer's functions in these links are in place, rather than simply giving up food due to choking. So what is the current usage of these two batteries? Let's focus on a set of data. In November last year, the installed capacity of electric buses with lithium iron phosphate batteries accounted for 64.9%, and the installed capacity of ternary lithium batteries was only 27.6%. On the contrary, in the pure electric passenger car market, the installed capacity of ternary lithium batteries in November last year exceeded 76%. It can be seen that the advantages of the greater energy density of the ternary lithium battery itself should be born as a new energy storage device for automobiles in the future. The current occurrence of related safety incidents can be regarded as a good thing when the popularization of new energy vehicles is still in its infancy. In order to achieve the dual goals of seizing the market and obtaining policy support, many new energy vehicle-related companies have relaxed their technical requirements and processed a large number of energy components that cannot withstand repeated use for a long time. The working environment of automobiles is harsh, and the reasons for safety accidents will inevitably increase greatly when these parts are used for a long time. Therefore, we can think that Zhang Xiangmu, director of the Equipment Department of the Ministry of Industry and Information Technology, announced at the my country Electric Vehicle Hundreds Conference that the safety performance of ternary lithium battery buses is to be evaluated. To promote the emergence of industry standards. Whether it is about consumers or manufacturers, it will have a very positive significance in the future. Therefore, there is no need to hesitate just because of the one-sided information about safety accidents of ternary lithium batteries on the Internet. The materials are dangerous. The key lies in how to control them firmly. Regarding pure electric vehicles, most people still love and hate them. More consumers want to buy them but dare not buy them. After all, pure electric vehicles still have a lot to deal with. The core component of a new-energy pure electric vehicle is the battery. Nowadays, after buying a car, most car owners are worried about the battery life being overdue unless some vehicles have a lifetime warranty. After all, changing a battery can be said to be valuable. So the pure electric vehicle battery is the key, what can be done to extend the battery life as much as possible? To be honest, if you want to extend the battery life as much as possible, you should pay attention to the following things. Although it is a bit clichéd, I still hope that everyone will be helpful, especially for some friends who have just bought a car. Pay attention to the maintenance of pure electric vehicles from the beginning. Let your car last longer than others. The first is to pay attention to the problem of battery degradation. Under international standards, the service life of a pure electric vehicle battery is not determined by time, but by the number of cycles. After a complete discharge of a computer, a cycle, here we need to understand the so-called complete discharge, and among them, the lithium element is irreversible electrochemical reaction caused by the irreversible electrochemical reaction in the battery reaction process, which causes the capacity to decrease, which is called battery attenuation, general attenuation A degree of 70% to 80% can be regarded as the end of the life of a battery, at least for pure electric vehicles, the impact is somewhat large. If you want to use your battery longer, you must remember not to charge the car in extreme environments, that is, not to charge the battery in an environment that is too hot or too cold, so that the chemical substances inside the battery will accelerate or reduce the reaction. Speed, the damage to the battery is the biggest. 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