18650 battery rechargeable

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

　　The 18650 lithium-ion battery pack process is mainly developed according to the battery pack structure. Most of the 18650 Li-ion battery pack process features are similar to each other, with many, many chords. 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 according to the battery pack structure. Most of the 18650 Li-ion battery pack process features are similar to each other, with many, many chords. The 18650 lithium-ion battery pack process has unique functions, the biggest feature of which is flexible combination, most of the continuous orders can be done semi-automatically, it is conceivable that the 18650 lithium-ion battery pack process is now becoming more and more simplified, generally 18650 lithium-ion battery packs Ion battery pack battery pack includes: 18650 cells, battery protection plate, cohesive nickel, nickel derivation, green book fittings, insulating paper, lead or plug wire, PVC wrap or case, output (including adapter), key switch, power indicator , EVA, barley paper, plastic bracket Auxiliary data in the package of these things, and most of the 18650 battery packs in this process.

　　1. Adopt the principle of priority and easy operation, which is convenient for employees to operate.

　　2. Take the priority of operation safety as the standard, that is, employees are not prone to short circuit or take good preventive measures during operation.

　　3. Adopt equipment standards, that is, cooperate with auxiliary equipment to avoid manual completion as much as possible, at least semi-automatic completion.

　　Low temperature lithium iron phosphate battery 3.2V 20A -20℃ charge, -40℃ 3C discharge capacity ≥70%

　　Charging temperature: -20~45℃ -Discharging temperature: -40~+55℃ -40℃ supports maximum discharge rate: 3C -40℃ 3C discharge capacity retention rate≥70%

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　　4. The packaging design should be reasonable, easy to take and easy to put away, do not take the product out and leave it for customers for a long time.

　　18650 lithium-ion battery pack process quality characteristics

　　1. To select qualified high-quality lithium-ion batteries, qualified and stable suppliers must supply single batteries with excellent performance. The single batteries 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, it is necessary to ensure low internal resistance, high-current discharge capacity, platform and heat dissipation.

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

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

　　Charging temperature: 0~45℃ Discharging temperature: -40~+55℃ Specific energy: 240Wh/kg -40℃ discharge capacity retention rate: 0.5C discharge capacity≥60%

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　　4-pack battery factory uses slotted nickel plate in spot welding, the size of nickel plate is satisfied with the requirements of large current discharge, nickel plate data, to ensure low internal resistance, spot welding machine, to ensure stable work, welding pins, to ensure quality, operator training And after passing the test, check whether the solder joints are strong or not by spot welding. And carry out vibration test on each batch of products to verify its anti-vibration performance.

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

　　6. Verify the high and low temperature function of the battery. Batteries from different packaging lithium-ion battery manufacturers were prepared and discharged at different discharge rates at high and low temperatures to obtain actual discharge curves.