With the sharp increase in the sales of electric vehicles in my country, there are forecast reports that the lithium-ion power lithium battery market is entering a golden period. By 2017, the scale of the power lithium battery industry will surge to 400% of the current level. With such a leap-forward increase in scale, the quality of batteries has become an unavoidable technical point. Recently, Beijing issued a document to adjust the quality assurance of vehicles and power lithium batteries. Among them, the supply of key components such as power lithium batteries is not less than 5 years or 100,000 kilometers, and the supply is adjusted to not less than 8 years or 120,000 kilometers. warranty. Like Beijing, Shanghai, as the country's leading new energy vehicle promotion demonstration city, is also considering increasing the service life of power lithium batteries. According to the current power lithium battery quality assurance service standards of various car companies, power lithium batteries can generally run for 5 years and 100,000 kilometer. How to break through the technical bottleneck and prolong the service life of the battery is a common issue faced by all battery production companies.Also read:https://www.aimeno.com/lithium-battery/214.html The bottleneck of electric vehicles lies in the battery. Only when the battery power problem is solved, other problems can be easily solved. Under the current technical conditions, changing the charging method of the power lithium battery is a good choice to prolong the battery life. Industry insiders pointed out that the currently advertised 8-year warranty may not necessarily be realized. Due to the difference in the production process of the automotive power lithium battery, there are also some differences in the performance of the battery cells in the battery pack. As time goes by, the difference between the cells in the battery pack will gradually increase, which will eventually affect the performance of the battery and cause a rapid decline in battery performance. Different charging methods are important factors affecting the performance and service life of single lithium batteries. Appropriate charging methods can not only maximize the battery capacity, but also prolong the battery life. Long charging time and short cruising range are the current criticisms of electric vehicles. Although the high-rate fast charging method adopted for this purpose solves the problem of long charging time, it actually seriously affects the service life of lithium batteries. Blindly pursuing fast charging methods and high-rate charging are prone to abnormal conditions such as high temperature and overcharging, and even cause danger. However, adopting a soft charging method first, under the voltage and current that the battery can withstand, and monitoring the environment, temperature, and temperature difference, and actively maintaining the health of the battery will help prolong the battery life and reduce safety risks. Charging is one of the ways to prolong battery life, but it is not a fundamental solution. Improvements in battery life and stability require technological breakthroughs. Regarding the current situation in my country, in terms of production technology of power lithium batteries, my country's battery companies lag behind the world level in terms of production and research and development capabilities. The output of new energy vehicles reached 76,000, a year-on-year increase of 2.5 times. There are a large number of gaps in the supporting power lithium batteries of new energy vehicles, coupled with the low barriers of the power lithium battery industry, leading to a large number of low-tech battery companies putting into production, and finally resulting in a situation of excess production of low-end batteries in China and a blank market for high-end batteries . In addition, batteries with low technical content have low energy density, which affects the cruising range of new energy vehicles. If batteries with the same capacity are produced, the weight of batteries in my country will exceed the weight of batteries from Japanese and Korean companies, which in turn will affect the mileage of new energy vehicles. Lightweight development. In addition, my country's battery industry lacks a unified production standard. The power lithium batteries produced by various battery companies are very poor in versatility, unable to achieve standardized and large-scale production, and also increase the workload of battery design. Since there is no unified industry standard, the charging and discharging performance of batteries produced by various companies varies greatly. The upstream lacks standards and cannot be standardized, which directly leads to large differences in charging piles and has become one of the reasons for the difficulty of charging. Unified battery standards will help standardize the battery industry, help save manpower and material costs, and invest more resources in battery research and development and improvement of production processes.Also read:https://www.aminobattery.com/lithium-battery/207.html On the one hand, the country's support for electric vehicles continues to increase, and power lithium batteries are facing rare opportunities for development. On the other hand, due to obstacles such as battery life and safety, it has not been able to break through. Compared with the international market, my country has many problems in electric vehicle power lithium batteries. On the one hand, my country's advanced materials and mechanism research is poor, and the battery structure design technology is not advanced. On the other hand, the degree of automation is low, and the development ability of fine technology is also weak. The battery system does not just need to combine the monomers, it is actually a very complicated technology. In addition, the supply of high-end materials required for batteries is still insufficient, and the consistency, yield, safety, reliability, and product performance cannot fully meet market requirements. The company's overall innovation ability is not strong, and its superior output is insufficient.