18650 rechargeable battery lithium 3.7v 3500mah
CH
About Us
Company Profile Development History Sales Network Partner Social Responsibility
Products
Rechargeable Battery Battery Packs Energy Storage Battery Primary Battery Handicraft Article
Subsidiary Company
SINO TECHNOLOGY SUNBEAM GREEN POWER DATAPOWER SEONG-HEE STD
Honor
Qualification Certificate Patent Certificate Honor Certificate
R&D
R&D Center Test Center
News
Company News Industry News
Contact Us
Other information
product
polymer lithium battery Primary battery Rechargeable Battery LR03 alkaline battery
18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

Other information

Home  >  Other information

18650 lithium ion battery 3.7v.Introduction to the production process of 18650 lithium battery pack

release time:2023-10-13 Hits:     Popular:AG11 battery

  

  (1)Baking

  Bake for 12 hours at a constant temperature and vacuum of -0.09MPa. The main purpose is to dry out the moisture in the battery core.

  (2)Injection

  Inject electrolyte into the vacuum-baked battery core 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 injection. The weight difference is the amount of liquid injected. Use this to determine whether the injection volume is appropriate.

  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%

  Click for details

  (3) Welding electrode tabs Weld the positive electrode tab (aluminum bar) and the negative electrode tab (nickel bar) to the scraper positions of the positive and negative electrode sheets using an ultrasonic welding machine. Pay attention to prevent welding deviation, welding misalignment, and false welding.

  (4) Bottom welding. First put the insulating gasket into the steel case, then put the wound battery core into the steel case, and use a spot welder to weld the negative electrode lug to the bottom of the steel case. Check the outer surface of the bottom of the steel shell to find out the 18650 lithium-ion battery packs with weak spot welding such as yellow spots, black spots, defects, and fire.

  (5)Sealing

  First use a spot welder to spot weld the steel shell and cap of the 18650 lithium-ion battery pack, and then use a laser welder to continue laser welding. Laser welding should ensure accurate positioning and clean parts to be welded. It is strictly forbidden to cause deformation or damage to the battery. Post-welding inspections should be carried out to repair welding of defective batteries with welding holes, explosions, etc.

  (6) Winding

  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%

  Click for details

  Place the ion exchange membrane flushly on the winding needle, and the front end extends out of the winding needle 2-5mm. There should be no wrinkles in the four corners of the pole piece. The pole piece should not fall off, the tape should be applied at an angle, the single-sided tape is too long, and the double-sided tape should not be Defects such as the left and right misalignment of the tape, the tape not covering the solder joints, etc. The positive electrode material must hug the negative electrode material, the pole piece cannot be rolled sideways, and the front end of the pole piece must be inserted to the top.


Read recommendations:

Wireless bluetooth headphones

Precautions for use of lithium iron phosphate battery

Research on sintering matching of crystalline silicon solar cells

602030 battery manufacturer

CR1130 battery

Last article:lithium ion battery 18650 price.18650 lithium battery winding process precautions

Next article:lithium ion battery cells 18650.18650 lithium-ion battery pack production process

Popular recommendation

NiMH No.7 battery

2023-03-22

convenient energy storage power supply company

2023-05-10

li ion 18650 battery pack direct sales

2023-03-22

26650 battery Processing

2023-03-22

401030 battery company

2023-03-22

603450 1200MAH 3.7V

2023-06-10

18650 2500mAh 11.1V

2022-09-30

Rack-mounted energy storage battery GN-10240

2022-09-27

12V 27A

2022-10-09

18650 2400MAH 3.7V

2022-07-29

Alkaline D Battery LR20

2022-11-11

601435 270mAh 3.7V

2022-08-19

703048 1100mAh 3.7V

2022-06-27

703048 1100mAh 3.7V

2022-08-19

Rack-mounted energy storage battery GN-192V 100Ah

2022-09-27

AG10 battery

2023-06-25

6LR61 alkaline battery

2023-06-25

18650 battery flat top

2023-06-25

18650 2200mah battery

2023-06-25

18650 lithium-ion battery

2023-06-25

Lithium Manganese Oxide Lithium-Ion Batteries

2024-12-18

High-Energy Disposable Lithium Battery

2025-01-08

AG7 battery.What is the difference between soft pack lithium-ion batteries and hard pack lithium-ion

2023-11-09

How to ensure the consistency of the 18650 battery pack?button cell battery cr1620

2023-09-18

Battery pack nominal voltage and output voltage range

2023-02-08

LR1130 battery.Preparation and process flow of 18650 lithium-ion battery

2023-10-13

Will the lithium battery use the RV spontaneously ignite?

2023-02-14

Common parameters of rechargeable batteries.3.7V 18650 lifepo4 battery.CR2430 battery

2023-08-15

What lithium battery is best and most durable.portable energy storage battery power supply company

2023-04-10

The difference between nickel -metal hydride batteries and lithium batteries.photovoltaic energy sto

2023-04-14
360° FACTORY VR TOUR
lithium ion battery 18650 priceWhatsapp
lithium ion battery 18650 price

lithium ion battery 18650 priceTel
+86 19925278095

lithium ion battery 18650 priceEmail
admin@sino-techgroup.com

TOP