18650 lithium battery PACK are through which the factory before testing?

Source: 2020 - 04 - 19 clicks: use 18650 lithium-ion battery pack before 18650 lithium-ion battery pack need to filter, different customer request 18650 battery lithium battery pack is completely different, because 18650 lithium ion power battery production high degree of automation, good stability, high replaceability, can effectively reduce the production cost, labor saving, 18650 battery system development of modularization and standardization degree of the unique advantages are incomparable. However, any every coin has two sides, advantages and disadvantages coexist is the normal state of things. In addition to the above advantages, the disadvantage of 18650 lithium-ion battery pack also nots allow to ignore. At present, 18650 lithium-ion battery is the chief drawback of single battery capacity is low, generally at about 2 ~ 4 ah. Therefore, a complete electric cars need a lot of batteries. Tesla need 7000 to 8000, 18650, for example, the lithium battery can be reliably connected to the module. Therefore, such a large number of the battery case, more and more is also high to the requirement of battery management consistency. In the field of electric cars, etc series combination, battery inconsistency will affect the performance of the battery, even bring safe hidden trouble. 18650 lithium-ion battery pack before 18650 lithium-ion battery pack, there are many of the cause of the inconsistency. Materials used in the manufacture of the battery itself is not completely consistent, battery manufacturing process cannot control to each battery is the same degree in every detail. This will lead to capacity, the terminal voltage, internal resistance, service life is inconsistent. In addition to the electrical properties of screening, the appearance of 18650 lithium battery also need to be tested. For example, scratches on the surface of the battery, damage, defects such as stains, pits and bumps affect battery module assembly and security features. Therefore, appearance inspection before 18650 lithium-ion battery pack is also a necessary step before packaging process. The lithium-ion battery pack before 18650 separation equipment can be used in the battery voltage and internal resistance of the automatic detection and separation. Specific functions as follows: the cells of all input conformance testing, and through technical means to ensure consistency and quality of the battery. 2. All the battery testing information and match the barcode of each cell in the cloud, so that testing information of each battery back; After the test, the battery can be divided into different levels, and remove the unqualified batteries. At present, the application of enterprises focus on separator mainly concentrated on the separation rate. Whether testing before 18650 battery or circular cylindrical battery pack 18650 factors, the choice of each high quality 18650 battery is the key to the battery manufacturer.