At the beginning of the launch of new energy models, some consumers expressed their concerns. If the battery is broken, I have to spend half the money to replace it, which is more than the total cost of all my cars. Is this really the case? Today I will give you an analysis from a technical point of view.

There are currently two major categories of products on the market: lithium iron phosphate and ternary lithium. Among them, the advantages of iron phosphate represented by BYD are longer life and better safety; the advantages of being widely used in pure electric vehicles are better low-temperature performance and higher capacitance per unit volume.

According to national regulations, when the power of an electric vehicle is reduced to 80% of the new battery state, it is not suitable for continued use in an electric vehicle; at about 70%, the battery pack should be eliminated. According to current battery technology, the capacity of ternary lithium batteries decays to 80% after 500-1000 charging cycles, while the capacity of lithium iron phosphate batteries decays to 80% after 2000 charging cycles.

Take Tesla model3 as an example. It has the latest themes. The cheapest long-drive rear version of the Ministry of Industry and Information Technology has a comprehensive mileage of 600 kilometers. Calculated at 80%, it can travel 480 kilometers on a single charge. According to the minimum number of recharges of the ternary lithium battery of 500 times, the battery pack can run for 240,000 kilometers without any problems. Not to mention 1000 recharges.

What imported car is too expensive? Let us put aside the imported model, the most popular BYD Yuan EV360 in January as an example, the Ministry of Industry and Information Technology has a comprehensive range of 305 kilometers, 80% calculation, the charge will run at least 244 kilometers, according to 500 The minimum charging time of three lithium batteries in a year is calculated based on a maximum of 1,000 recharges. It needs to travel 244,000 kilometers to reach the life of the battery.

Taking any mainstream compact car and SUV models with a price of about 150,000, the industrial and all-round basic has reached more than 400 kilometers, which is 80%, and the cost can be calculated at least 320 kilometers. The charging time of the ternary lithium battery is the lowest. The minimum mileage of 500 times can travel 160,000 kilometers. As for those pure electric vehicles equipped with lithium iron phosphate battery packs, don’t worry too much. Even if the comprehensive mileage is only 200 kilometers, 2,000 recharges are enough to drive you 400,000 kilometers.

In general, if you commute to get off work only a few tens of kilometers a day, buying a new car with a comprehensive mileage of about 300 kilometers can let you use it for more than 10 years without any problem. Of course, the longer the mileage, the better, but more importantly, healthier driving habits. Here, the editor gives you some suggestions.

Shallow charge and shallow discharge Pay attention to battery temperature

According to the manufacturer’s recommendations, the battery pack’s SOC usage window is 10%-90%. Simply put, it is to avoid charging the battery before it is dead. At the same time, it is recommended to charge to 80-90% each time to prevent battery overcharging.

In addition, if possible, try to use home slow charging to reduce the number of fast charging. After all, frequent high-speed and high-temperature charging and discharging will greatly affect battery life. For example, in the case of long-distance driving of an electric vehicle, the internal temperature is relatively high because the battery is in a state of high-speed discharge and DC fast charging for a long time. If there is no good temperature control management system, it is likely to cause the battery to overheat and cause spontaneous combustion. Therefore, today’s pure electric vehicles are generally equipped with an intelligent temperature control system, which is very important for you to buy a car. At present, hydrometallurgical technology is an important application of metal recovery in waste lithium batteries in my country. The positive and cathode active materials are separated by organic solvents, and the metal cobalt is recovered by methods such as extraction, precipitation, electrolysis, and biology. Gongyi Xianwei Machinery Equipment Co., Ltd. researched and developed a new type of lithium battery positive electrode sheet crushing and recycling equipment, which adopts dry mechanical separation method. In view of the particularity of the negative electrode material, it is naturally crushed and separated. , Recycling of aluminum metal, the odor is recovered through water mist activated carbon, and dust is collected through dust removal equipment. It can effectively recycle valuable metal materials in lithium batteries and prevent waste of resources and subsequent processing techniques. The lithium battery has outstanding performance in the process equipment of the positive electrode sheet. It effectively realizes that the negative electrode material of the waste lithium battery is copper and graphite, and the extraction and separation of lithium aluminum cobaltate has a separation rate of more than 99%. It is currently an advanced technology for processing waste lithium batteries in China. The company has established a 500-1000kg processing production line per hour, which has been highly praised by the majority of users. Therefore, the treatment and disposal of waste is a scientific and effective lithium battery, which not only has significant environmental benefits, but also has good economic benefits, so that the dust emission of the lithium battery anode reaches the national emission standard before being discharged at high altitude, and at the same time realizes the realization of non-ferrous metals. The effective separation and recycling of lithium batteries have solved the gap in the scientific treatment of waste lithium batteries in the industry, and has added brilliance to the environmental protection cause. Compared with wet impact crushing, dry impact crushing can make the active materials easier to separate from the fluid collector, thereby reducing the impurity content of the crushed products, and easier to separate and recover subsequent materials. Therefore, the development of green recycling equipment for polluted gases in the dry impact crushing process of waste lithium batteries, and the control and transformation of secondary pollution during the pretreatment process in the recycling process have considerable environmental, economic and social benefits. Now, Gongyi Ruisec Machinery Equipment Co., Ltd.

For hybrid electric vehicles (PHEV), battery life is much longer. After all, the battery pack has an engine to supply power when the battery is dead. Ordinary hybrid vehicles only support AC slow charging, which greatly reduces the high temperature caused by battery charging and discharging. This is why more and more traditional car manufacturers are developing hybrid vehicles.

There has been no substantial breakthrough in pure electric technology until today, and pure electric vehicles are more suitable for urban driving. Although occasionally driving for a long time once or twice will not have a significant impact on the battery, in the long run, it will definitely reduce battery life. In addition, when buying a pure electric vehicle, it is important to pay attention to the cruising range and whether there is an intelligent temperature control system.