The general 18650 lithium battery 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, power indicator, and auxiliary materials such as EVA, barley paper, plastic bracket, etc., together form the PACK.
The 18650 lithium battery pack process is mainly formulated according to the PACK battery structure. Most of the 18650 lithium battery pack process features are similar. The feature is that the 18650 lithium battery pack process features are very distinctive. The biggest feature of the 18650 lithium battery pack is The combination is flexible, and most continuous orders can be completed semi-automatically. It is conceivable that the 18650 lithium battery pack process is becoming more and more simple now. The general 18650 lithium battery PACK battery pack includes: 18650 batteries, battery protection boards , Connect the nickel sheet, lead out the nickel sheet, green paper accessories, insulating paper, wire or plug wire, PVC outer packaging or shell, output (including connector), key switch, power indicator, and EVA, barley paper, plastic bracket, etc. These auxiliary materials together make up the PACK, and most of the 18650 battery PACK types are in the same category.
18650 lithium battery pack process skills summary analysis
One, what should be paid attention to when welding 18650 lithium battery pack process?
1. Pay attention to the spot welding current when welding 18650 lithium batteries.
2. Pay attention to the diameter of the solder pins when soldering 18650 lithium batteries.
3. Pay attention to the solder pin spacing when soldering 18650 lithium batteries.
4, 18650 lithium battery pack process welding should pay attention to the number of solder joints.
5. Do not explode fire, short circuit, or false welding during spot welding.
18650 lithium battery pack process skills summary analysis
2. What should I pay attention to when soldering the 18650 lithium battery pack process?
1. Pay attention to the diameter of the tin wire when soldering 18650 lithium batteries.
2. When soldering 18650 lithium battery, pay attention to the constant and stable soldering temperature.
3. When soldering, it should be noted that the soldering time should not exceed how many seconds.
4. The soldering iron tips used when soldering different 18650 lithium battery surface materials are also different.
3. What should I pay attention to when making 18650 lithium battery pack process?
1. Set the internal resistance, voltage, and self-discharge of the cell.
2, set the channel and grade.
3. Set the number of groups per channel.
? 4. If there is a defect, it needs to be isolated and analyzed in time.
18650 lithium battery pack process skills summary analysis
Four, multi-parallel 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, do not 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.
V. 18650 lithium battery pack process quality characteristics:
1. The use of quality lithium batteries requires qualified and stable suppliers to provide good performance single batteries. The single batteries have undergone a series of safety tests and performance tests, and used 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 there is a space of no less than 2mm between two adjacent batteries. This structure requires a plastic bracket to fix the battery.
18650 lithium battery pack process skills summary analysis
4. PACK battery factory? Slotted nickel sheets are used in 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 needles guarantee the quality. Work on duty after qualified, and check whether the solder joints are firm after spot welding. In addition, vibration experiments are done for each batch of products to verify the anti-vibration performance.
5. Different batches of batteries are made into typical finished products and subjected to life tests. When the experience of the lithium battery PACK design specification is summarized, the finished battery products are subjected to cycle tests to obtain the actual cycle life.
6. Verify the high and low temperature performance of the battery. The cells 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.
