Detailed explanation of the key points of the 18650 lithium battery pack process

The 18650 lithium battery pack process is mainly based on the PACK battery structure. Most of the 18650 lithium battery pack process features are similar, and they are characterized by multiple parallels and multiple strings. The 18650 lithium battery pack process has distinct characteristics. The biggest feature is the flexible combination. Most continuing orders can be completed semi-automatically. It is conceivable that the 18650 lithium battery pack process is becoming more and more streamlined. Generally, 18650 lithium batteries PACK battery pack includes: 18650 battery cell, battery protection board, connecting nickel sheet, lead nickel sheet, green paper accessories, insulating paper, wire or plug wire, PVC outer packaging or shell, output (including connector), key switch, The battery indicator, EVA, barley paper, plastic bracket and other auxiliary materials together form the PACK, and most types of 18650 battery PACKs are suitable for this process. Multi-parallel and multi-string 18650 lithium battery pack design process skills 1. Adopt the principle of priority and easy operation, that is, easy operation by employees. 2. Adopt the principle of prioritizing operation safety, that is, employees are not easy to short-circuit or have better preventive measures during operation. 3. Adopt the equipment principle, that is, try not to use manual labor as much as possible to complete with auxiliary equipment, at least semi-automatically. 4. The packaging design should be reasonable, easy to take and put, do not leave the product to the customer for a long time. 18650 lithium battery pack process quality characteristics 1. Adopt quality lithium batteries, qualified and stable suppliers to supply good performance single cells, the single cells go through a series of safety detection and performance detection, and use them after being qualified. 2. Low internal resistance and good consistency of the battery are required. Whether 14.8V lithium battery packs or other energy storage battery packs, low internal resistance must be ensured to ensure high-current discharge capacity, platform, heat dissipation, etc. 3. The battery structure adopts a ventilated design, and the distance between two adjacent batteries is not less than 2mm. This structure requires the battery to be fixed with a plastic bracket. 4. The PACK battery factory uses slotted nickel sheets for spot welding. The size of the nickel sheets meets the requirements of high-current discharge. The nickel sheet material guarantees low internal resistance. The spot welder guarantees stable operation. The welding needle guarantees the quality. The operator is trained and qualified. After the job operation, test whether the solder joints are firm after spot welding. In addition, each batch of products is subjected to a vibration test to verify the anti-vibration performance. 5. Different batches of batteries are made into typical finished products and the life test is done. When the relevant experience of the lithium battery PACK design specification is summarized, the cycle detection of the finished battery products can get the actual cycle life. 6. Verify the high and low temperature performance of the battery. The batteries of different PACK lithium battery manufacturers are made into finished products and tested at different rates of discharge at high and low temperatures to obtain the actual discharge curve. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Which one is better than lithium iron phosphate battery and lithium titanate battery?