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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
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Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
Model No. : LR03
Voltage: 1.5v
Name: AAA
Mercury Content: Mercury Free
Applications: Calculators, Various Small Home Appliances, Children Toys, Watches etc
18650 lithium-ion battery pack production process
(1) Baking
Bake for 12 hours under the condition of constant temperature and vacuum degree of -0.09MPa. The main purpose is to dry the moisture of the battery cell.
(2) Injection
Inject the electrolytic solution into the vacuum-baked cell in a glove box filled with Ar gas. The amount of liquid injected varies according to the design of the lithium-ion battery pack. The battery must be weighed before and after the liquid injection. The difference in weight is the amount of liquid injected. Use this to judge whether the injection volume is appropriate or not.
(3) Welding tabs Weld the positive tab (aluminum strip) and the negative tab (nickel strip) to the scraper position of the positive and negative tabs with an ultrasonic welding machine. Pay attention to prevent welding deviation, welding dislocation, and false welding.
(4) Bottom welding. First put the insulating gasket into the steel shell, then put the wound battery core into the steel shell, and weld the negative tab to the bottom of the steel shell with a spot welder. Check the outer surface of the bottom of the steel shell, pick out yellow spots, black spots, defects, fires and other poor appearances, and try to pull the tabs, pick out 18650 lithium-ion battery packs that are not firmly spot welded, such as fires, weak welding, and desoldering.
(5) seal
First use a spot welding machine to spot weld the steel case and cap of the 18650 lithium-ion battery pack, and then use a laser welding machine for continuous laser welding. Laser welding should ensure accurate positioning, and the welded parts are clean. It is strictly forbidden to cause deformation or damage to the battery. Check after welding, and repair welding for defective batteries such as welding holes and explosions.
(6) Winding
Place the ion-exchange membrane on the winding needle evenly, and the front end protrudes 2-5mm from the winding needle. There should be no wrinkles at the four corners of the pole piece. If the adhesive tape is misaligned left and right, the adhesive tape does not cover the solder joints and other defects, the positive electrode material must hug the negative electrode material, the electrode sheet cannot be rolled, and the front end of the electrode sheet must be inserted to the top.