aa alkaline battery.Understand the key points of the 18650 lithium battery pack process in one article

18650 lithium-ion battery is one of the most common lithium-ion batteries currently on the market. So what are the key points about the PACK process of 18650 lithium-ion battery? Let’s take a look below. The 18650 lithium-ion battery pack process is mainly formulated based on the PACK battery structure. Most of the 1

18650 lithium-ion battery is one of the most common lithium-ion batteries currently on the market. So what are the key points about the PACK process of 18650 lithium-ion battery? Let’s take a look below.

The 18650 lithium-ion battery pack process is mainly formulated based on the PACK battery structure. Most of the 18650 lithium-ion battery pack process characteristics are similar, and they are characterized by multiple parallels and multiple series. The 18650 lithium-ion battery PACK process has distinctive features. The biggest feature is the flexible combination. Most ongoing orders can be completed semi-automatically. It is conceivable that the 18650 lithium-ion battery pack process is becoming more and more streamlined. Generally, 18650 Lithium-ion battery PACK battery pack includes: 18650 battery cells, battery protection plate, connecting nickel sheet, lead nickel sheet, green paper accessories, insulating paper, wires or plug wires, PVC outer packaging or shell, output (including connectors), The key switch, power indicator, and auxiliary materials such as EVA, highland barley paper, and plastic brackets together form a PACK, and most types of 18650 battery PACKs are suitable for this process.

Multi-parallel multi-string 18650 lithium-ion battery pack design process skills

1. Adopt the principle of giving priority to easy operation, that is, easy operation by employees.

2. Adopt the principle of giving priority to operational safety, that is, employees are not prone to short circuits or have better preventive measures when operating.

3. Adopt the equipment principle, that is, use auxiliary equipment to complete the work without manual labor as much as possible, at least semi-automatically.

4. The packaging design must be reasonable, easy to take and put away, and the product should not be left out for a long time after the product is delivered to the customer.

18650 lithium-ion battery pack process quality characteristics

1. Use lithium-ion batteries with acceptable quality. Qualified and stable suppliers must supply single cells with good performance. The single cells must undergo a series of safety tests and performance tests and be used after passing them.

2. The battery is required to have low internal resistance and good consistency. Whether it is a 14.8V lithium-ion battery pack or other energy storage battery pack, low internal resistance must be ensured to ensure the capacity, platform, and heat dissipation of large current discharge.

3. The battery structure adopts a ventilation design, and a spacing of no less than 2mm should be maintained between two adjacent batteries. 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 for large current discharge. The nickel sheet material ensures low internal resistance. The spot welding machine ensures stable operation. The welding needles ensure quality. The operator has been trained and assessed and qualified. After starting the operation, check whether the solder joints are firm after spot welding. In addition, vibration tests are conducted on 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 lithium-ion battery PACK design specifications is summarized, the finished batteries 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-ion battery manufacturers are made into finished products and discharged at different rates under high and low temperatures to obtain actual discharge curves.

The above are the common PACK process points for 18650 lithium-ion batteries.