Lithium power lithium battery technology to be upgraded -Lithium - Ion Battery Equipment
The sales volume of domestic electric vehicles has increased significantly. According to the forecast report, the lithium ion power battery market is entering the golden period, and the scale of power lithium battery industry will increase sharply. With such leapfrog scale rise, battery quality has become a focus of attention. Some insiders believe that how to break through the technical bottleneck and extend the service life of the battery is a common issue faced by the current battery production companies.
Beijing and Shanghai take the lead in extending the battery warranty period
Not long ago, Beijing issued a document to adjust the quality assurance of vehicles and power lithium batteries. The quality assurance of key parts such as power lithium batteries is not less than 5 years or 100000 kilometers, and the quality assurance is not less than 8 years or 120000 kilometers. In addition, as a leading demonstration city for the promotion of new energy vehicles in China, Shanghai is also considering improving the service life of lithium battery. Some analysts believe that extending the warranty period of power lithium battery is the trend of the times, and it is only a matter of time when it will be officially implemented.
However, industry insiders pointed out that according to the current technical level of domestic battery companies, in fact, it is not necessarily possible to achieve the 8-year warranty advertised. In the production process of automobile power lithium battery, due to the differences in production process, there are also some differences in the performance of battery monomer in the battery pack. With the passage of time, the monomer difference in the battery pack will gradually expand, eventually affecting the performance of the battery, resulting in the rapid degradation of the battery performance. Different charging methods are important factors that affect the performance and service life of single lithium battery. Proper charging methods can not only maximize the battery capacity, but also extend the battery service life. Therefore, under the current technical conditions, changing the charging mode of power lithium battery is a good choice to extend the battery life.(Lithium - Ion Battery Equipment)
Although the high rate fast charging method solves the problem of long charging time, it seriously affects the service life of lithium batteries. If you blindly pursue fast charging mode and charge at a large rate, it is easy to cause high temperature, overcharge and other abnormal conditions and even cause danger. Therefore, the selection of slow charging, which is soft first and then strong, will help to extend the service life of the battery.
Difficulty in upgrading battery technology due to various reasons
Although the charging method is one of the ways to prolong the battery life, it is not the fundamental solution. The improvement of battery life and stability still needs to be made in technology. With regard to the current situation in China, in terms of production technology, China's battery companies lag behind the world level in terms of production and R&D capabilities. At present, there are a large number of gaps in the supporting power lithium batteries for new energy vehicles in China, and the low barriers in the power lithium battery industry have led to the entry of a large number of battery companies with low technology content, resulting in a situation of excess production of low-end batteries in China and a gap in the high-end battery market. In addition, the energy density of batteries with low technology content is low, which affects the range of new energy vehicles. If we produce batteries with the same capacity, our battery weight will exceed that of Japanese and Korean enterprises, which will affect the lightweight development of new energy vehicles.
In addition, there is a lack of unified production standards in China's battery industry. The power lithium battery produced by various battery companies has poor versatility and can not achieve standardized and large-scale production, which also increases the workload of battery design. Due to the lack of uniform industry standards, the charging and discharging performance of batteries produced by various companies is greatly different. The lack of standards in the upstream and the inability to standardize directly led to the large differences in charging piles, which also became one of the reasons for the difficulty in charging. Therefore, some industry experts suggested that relevant departments should speed up the introduction of unified battery standards, which will help standardize the battery industry, save human and material costs, and invest more resources in the research and development of batteries and the improvement of production processes.
Beijing and Shanghai take the lead in extending the battery warranty period
Not long ago, Beijing issued a document to adjust the quality assurance of vehicles and power lithium batteries. The quality assurance of key parts such as power lithium batteries is not less than 5 years or 100000 kilometers, and the quality assurance is not less than 8 years or 120000 kilometers. In addition, as a leading demonstration city for the promotion of new energy vehicles in China, Shanghai is also considering improving the service life of lithium battery. Some analysts believe that extending the warranty period of power lithium battery is the trend of the times, and it is only a matter of time when it will be officially implemented.
However, industry insiders pointed out that according to the current technical level of domestic battery companies, in fact, it is not necessarily possible to achieve the 8-year warranty advertised. In the production process of automobile power lithium battery, due to the differences in production process, there are also some differences in the performance of battery monomer in the battery pack. With the passage of time, the monomer difference in the battery pack will gradually expand, eventually affecting the performance of the battery, resulting in the rapid degradation of the battery performance. Different charging methods are important factors that affect the performance and service life of single lithium battery. Proper charging methods can not only maximize the battery capacity, but also extend the battery service life. Therefore, under the current technical conditions, changing the charging mode of power lithium battery is a good choice to extend the battery life.(Lithium - Ion Battery Equipment)
Although the high rate fast charging method solves the problem of long charging time, it seriously affects the service life of lithium batteries. If you blindly pursue fast charging mode and charge at a large rate, it is easy to cause high temperature, overcharge and other abnormal conditions and even cause danger. Therefore, the selection of slow charging, which is soft first and then strong, will help to extend the service life of the battery.
Difficulty in upgrading battery technology due to various reasons
Although the charging method is one of the ways to prolong the battery life, it is not the fundamental solution. The improvement of battery life and stability still needs to be made in technology. With regard to the current situation in China, in terms of production technology, China's battery companies lag behind the world level in terms of production and R&D capabilities. At present, there are a large number of gaps in the supporting power lithium batteries for new energy vehicles in China, and the low barriers in the power lithium battery industry have led to the entry of a large number of battery companies with low technology content, resulting in a situation of excess production of low-end batteries in China and a gap in the high-end battery market. In addition, the energy density of batteries with low technology content is low, which affects the range of new energy vehicles. If we produce batteries with the same capacity, our battery weight will exceed that of Japanese and Korean enterprises, which will affect the lightweight development of new energy vehicles.
In addition, there is a lack of unified production standards in China's battery industry. The power lithium battery produced by various battery companies has poor versatility and can not achieve standardized and large-scale production, which also increases the workload of battery design. Due to the lack of uniform industry standards, the charging and discharging performance of batteries produced by various companies is greatly different. The lack of standards in the upstream and the inability to standardize directly led to the large differences in charging piles, which also became one of the reasons for the difficulty in charging. Therefore, some industry experts suggested that relevant departments should speed up the introduction of unified battery standards, which will help standardize the battery industry, save human and material costs, and invest more resources in the research and development of batteries and the improvement of production processes.
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