AG11 battery.What is the key to 18650 lithium-ion battery packaging technology?

The 18650 lithium-ion battery pack process is mainly developed based on the battery pack structure. Most of the 18650 lithium-ion battery pack process characteristics are similar to each other, with many, many strings. The 18650 lithium-ion battery pack process has unique functions, the biggest feature of which is flexible combination. Most

The 18650 lithium-ion battery pack process is mainly developed based on the battery pack structure. Most of the 18650 lithium-ion battery pack process characteristics are similar to each other, with many, many strings. The 18650 lithium-ion battery pack process has unique functions. The biggest feature is flexible combination. Most of the ongoing orders can be semi-automatic. It is conceivable that the 18650 lithium-ion battery pack process is now becoming more and more simplified. Generally, 18650 lithium Ion battery pack battery pack includes: 18650 batteries, battery protection plate, cohesive nickel, nickel derivation, green book accessories, insulating paper, lead or patch cord, PVC packaging or shell, output (including adapter), key switch, power indicator , EVA, barley paper, plastic brackets to assist data in packaging these things, and most 18650 battery packs in this process.


1. Adopt the principle of priority and easy operation to facilitate employee operation.


2. Prioritize operational safety as the standard, that is, employees are not prone to short circuits during operation or take good preventive measures.


3. Adopt equipment standards, that is, cooperate with auxiliary equipment to avoid manual completion as much as possible, and at least semi-automatically complete the work.
Low temperature lithium iron phosphate battery 3.2V 20A -20℃ charging, -40℃ 3C discharge capacity ≥70%

Charging temperature: -20~45℃ -Discharge temperature: -40~+55℃ -40℃ Support maximum discharge rate: 3C -40℃ 3C discharge capacity retention rate ≥70%
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4. The packaging design should be reasonable and easy to pick up and put away. Do not take the product out for customers to leave for a long time.


18650 lithium-ion battery pack process quality characteristics


1. Choose qualified and high-quality lithium-ion batteries. Qualified and stable suppliers must supply single cells with excellent performance. The single cells have passed a series of safety tests and functional tests and are qualified for use.


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 packs, low internal resistance must be ensured, and the capacity, platform and heat dissipation of large current discharge must be ensured.


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.
Low temperature and high energy density 18650 3350mAh-40℃ 0.5C discharge capacity ≥60%

Charging temperature: 0~45℃ Discharge temperature: -40~+55℃ Specific energy: 240Wh/kg -40℃ Discharge capacity retention rate: 0.5C Discharge capacity ≥ 60%
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The 4-pack battery factory uses slotted nickel plates for spot welding. The size of the nickel plate is satisfactory for large current discharge. The nickel plate data ensures low internal resistance. The spot welder ensures stable work. Welding pins ensure quality and operator training. After passing the test, perform spot welding to check whether the solder joints are strong. Vibration tests are conducted on each batch of products to verify their anti-vibration performance.


5. Make typical products of different batches of batteries and conduct life tests. While summarizing the relevant experience in lithium-ion battery pack design, we also conduct cycle tests on battery products to obtain actual cycle life.


6. Verify the high and low temperature functions of the battery. Batteries from different packaged lithium-ion battery manufacturers were prepared and discharged at different discharge rates at high and low temperatures, and actual discharge curves were obtained.