18650 rechargeable battery lithium 3.7v 3500mah
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polymer lithium battery Primary battery Rechargeable Battery LR03 alkaline battery
18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah
Sino Technology Manufacturer Group co.,ltd Home  >  product  >  energy storage lithium battery  >  Rechargeable Battery
polymer lithium battery

Primary battery

Rechargeable Battery

LR03 alkaline battery

Sino Technology Manufacturer Group co.,ltd
Sino Technology Manufacturer Group co.,ltd

lithium ion battery 18650 price
lithium ion battery 18650 price
lithium ion battery 18650 price
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lithium ion battery 18650 price

lithium ion battery 18650 price

Model: 18650

Capacity: 1000mAh

Standard voltage: 3.7V

Size: 18*65mm

Product origin: China

Storage time: 5 years


Application:

Ebike, scooters, solar panel, power storage, flashlight, power tools, medical equipment, motorcycle, digital products etc.


Product description

Related Products


  18650 lithium battery pack production process

  (1) Baking

  Baking 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 battery cell after vacuum baking into the electrolyte solution in the glove box filled with Ar gas. The amount of liquid injection varies according to the design of the lithium battery pack. This is 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 positions 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 to pick out 18650 lithium battery packs that are not firmly spot welded, such as fires, weak welding, and desoldering.

  (5) sealing

  First spot weld the steel shell and cap of the 18650 lithium battery pack with a spot welding machine, 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

  Put 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.

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