cylindrical li polymer battery Manufacturers

The power recovery decision-making consultation salon co sponsored by the Beijing Association for Science and Technology and the Literature and Information Center of the Chinese Academy of Sciences was held in Beijing Green Space Center yesterday. Fei Weiyang, academician of the Chinese Academy of Sciences, pointed out that in recent years, the key technology of pure electric drive has made great progress, and the core technology of electric vehicles represented by lithium ion has made a major breakthrough. However, the massive application of lithium batteries will also lead to the retirement of a large number of lithium batteries. Therefore, it is necessary to strengthen the research and development of advanced technologies for lithium battery recycling to achieve safe and efficient disassembly and overall recovery of valuable metals and prevent secondary pollution.

In recent years, more and more new energy vehicles have entered people's lives. According to relevant data, by the end of 2020, the number of new energy vehicles in China has reached 4.92 million, accounting for 1.75% of the total number of vehicles, an increase of 1.11 million over 2019, or 29.18%. In addition, the growth of new energy vehicles has exceeded 1 million for three consecutive years, showing a trend of sustained and rapid growth, which indicates that the industry has a good development trend.

Diaphragm 135 ℃ automatic shutdown protection, using internationally advanced Celgas2300PE-PP-PE three-layer composite membrane. When the temperature of the battery reaches 120 ℃, the membrane holes on both sides of the PE composite membrane are closed, the internal resistance of the battery increases, and the internal temperature of the battery slows down. When the temperature of the battery reaches 135 ℃, the PP membrane hole is closed, the battery is internally open, and the temperature of the battery is no longer increased, ensuring the safety and reliability of the battery.

There are three main packaging forms of lithium battery, namely, cylinder, square and soft package. Different packaging structures mean different characteristics, each of which has its advantages and disadvantages. Among them, there are many types of cylindrical lithium batteries, such as 14650, 17490, 18650, 21700, 26500, etc.