AG7 battery.Key points about the PACK process of 18650 lithium-ion battery

18650 lithium-ion battery is one of the most common lithium-ion batteries on the market, so what are the key points of the 18650 lithium-ion battery packaging process? Let us take a look. 18650 lithium battery pack technology is mainly formulated based on the structure of the battery pack, and most of the 18650 lithium battery pack technology

18650 lithium-ion battery is one of the most common lithium-ion batteries on the market, so what are the key points of the 18650 lithium-ion battery packaging process? Let us take a look.

18650 lithium-ion battery pack technology is mainly formulated based on the structure of the battery pack, and the characteristics of most 18650 lithium-ion battery pack technologies are similar, characterized by having many, many strings. 18650 lithium-ion battery technology is unique. The biggest feature is flexible combination. Most of the ongoing orders can be completed automatically. It can be imagined that 18650 lithium-ion battery technology is becoming more and more simplified. Generally, 18650 lithium-ion battery pack batteries Package includes: 18650 nickel battery, battery protection plate, connectors, lead nickel film, green book accessories, insulating paper, lead or patch cord, PVC packaging or shell, output (including connectors), key switch, power indicator, EVA Such as auxiliary materials, barley, several common plastic bracket packages, most of the 18650 battery packs are involved in this process.

Design and process skills for multiple series of 18650 lithium-ion battery packs

1. Put the principle of ease of operation first, that is, it is easy for employees to operate.

2. The principle of safety priority should be adopted, that is, employees are not prone to short circuits or good preventive measures should be taken.

3. Adopt the equipment principle, that is, try not to do it manually with the help of auxiliary equipment, but at least semi-automatically.

4. The packaging design should be reasonable and easy to take and put away. Do not give the product to the customer for half a day to take it out.

18650 lithium-ion battery pack process quality characteristics

1. Qualified quality lithium-ion batteries should be supplied by qualified and stable suppliers with good performance. A single battery should pass a series of safety tests and performance tests.

2. The internal resistance of the battery is required to be low and consistent. Whether it is a 14.8v lithium-ion battery pack or other energy storage battery pack, low internal resistance should ensure the capacity, platform and heat dissipation of large current discharge.

3. The battery structure adopts a ventilation design, and the distance between two adjacent batteries is not less than 2mm. This structure requires the battery to be held in place by a plastic bracket.

4. Grooved nickel sheets are used for spot welding in battery factories. The size of the nickel plate meets the requirements for large current discharge, the material of the nickel plate is guaranteed, the internal resistance is low, the spot welding machine operates stably, and the quality of the welding needle is guaranteed. Vibration experiments are conducted on each batch of products to verify their anti-vibration performance.

5. Different batches of batteries were made into typical finished products and life tests were conducted. While summarizing the experience related to the design specifications of lithium-ion battery packs, the actual cycle life of the finished battery was obtained through cycle tests.

6. Verify the high and low temperature performance of the battery. Batteries from different packaged lithium-ion battery manufacturers are made into finished products and discharged at different rates at high and low temperatures to obtain actual discharge curves.