Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
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 .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
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.
release time:2023-10-13 Hits: Popular:AG11 battery
1. Humidity control <1% RH Purpose: To prevent water absorption during the winding process of positive and negative electrode sheets, resulting in zero voltage, self-discharge, and poor cycle performance;
Method: Calculate the dew point value and temperature value to obtain the temperature and humidity value;
2. Dust control ≤100,000pc/ft3 (detected particle size is 0.5um)
Purpose: To prevent dust from being involved in the pole assembly during winding, causing battery core short circuit, overheating, fire, self-discharge and other defects;
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
Method: Use dust tester;
3. Abnormal cutting burrs
Process requirements: pole piece ≤8um; pole lug burr ≤12um; detection method: randomly select 1 PCS battery cells for dissection during the first inspection of each machine in each shift, and detect the front and rear ends of the positive and negative pole pieces and the anode according to the "Burr Detection Work Instructions" , Negative tab cutting burrs.
Adverse effects: The burrs on the pole pieces or tabs exceeding the process requirements may cause the burrs to pierce the diaphragm, short-circuit the positive and negative poles, cause the battery core to overheat, and may explode in severe cases, posing serious safety hazards.
18650 lithium ion battery winding steps
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%
4. Poor coverage of positive and negative electrodes
Process requirements: The alignment of positive and negative electrode plates is 0.75?.55mm
The alignment between the negative electrode sheet and the separator is 1?.5mm
Detection method: Randomly inspect 3 PCS cells continuously after changing the roll. Check the alignment according to the "X-RAY Operation Instructions". Adverse effects: 1) The alignment of the positive and negative electrode sheets exceeds the process specifications, which may cause the negative electrode sheet not to wrap the positive electrode sheet. During the charging process, the lithium ions released from the positive electrode cannot find the corresponding graphite to embed, causing free lithium ions in the battery core to accumulate on the negative electrode and form dendrites. The dendrites pierce the separator, causing an internal short circuit and posing a safety hazard.
2) If the alignment between the negative electrode sheet and the separator exceeds the process standard, the negative electrode sheet may be squeezed and deformed, and the negative electrode material on the electrode sheet may partially fall off. During the charging process, the battery core will expand, and the powder will pierce the separator, causing an internal short circuit of the positive and negative electrodes, causing safety hazards. hidden danger;
5. Poor pole piece coverage in the winding direction (the length of the outer layer of negative electrode and super positive electrode material, the length of the inner layer of negative electrode and super positive electrode material) detection method: every 2 hours, each winding machine randomly inspects the dissection of 3 PCS cells, and uses an eyepiece and a ruler to measure the two Different coverage sizes.
Adverse effects: It may cause the negative electrode sheet not to wrap the positive electrode sheet. During the charging process of the battery cell, the lithium ions released from the positive electrode cannot find the corresponding graphite to embed, causing free lithium ions in the battery core to accumulate on the negative electrode and form dendrites. Dendrites pierce the diaphragm and cause an internal short circuit, posing a safety hazard.
Read recommendations:
Important part of Lithium iron phosphate battery.lifepo4 solar panel energy storage system lithium b
How to reduce the consumption of platinum metal in fuel power lithium battery
Last article:18650 li ion rechargeable battery.18650 lithium-ion battery pack production process
Next article:3.7 volt 18650 lithium battery.What is the process for customizing 18650 lithium battery pack?
Popular recommendation
Ni-MH battery packs
2023-03-22402030 polymer battery
2023-03-22lithium ion phosphate battery 3.2v
2023-03-2218650 battery 2600mah
2023-03-22energy storage battery for solar system manufacture
2023-05-10Printed hair curler
2022-09-22L822 32A/29A
2022-10-0918650 1500mAh 3.7V
2022-06-20L1325 4LR44
2022-10-09801538 480mAh 3.7V
2022-08-19R20
2023-03-2718650 2200mAh 11.1V
2022-09-3018650 800mAh 3.7V
2022-06-27D USB 1.5V 6000mWh
2023-06-29Lithium-ion battery GN-300
2022-09-27NiMH battery packs manufacturer
2023-08-0418650 li-ion battery
2023-06-253.7 volt 18650 lithium battery
2023-06-2518650 battery rechargeable
2023-06-25402030 battery
2023-06-25Lithium-Ion Batteries in Smartphones
2025-07-11Where does the battery come from the electrical
2022-06-18Square Lithium - ion Batteries in Emergency Power Supplies
2025-04-25Technical requirements for batteries
2024-05-10How to perform daily maintenance on lithium batteries to extend their lifespan?
2024-09-18Confused battery types
2023-10-07How to detect the battery capacity of lithium batteries.home solar energy storage lithium battery co
2023-04-11AG9 battery.Series connection of 18650 lithium batteries
2023-10-11How to improve the characteristics of lithium iron phosphate batteries.32700 battery
2023-08-24Application of energy storage market.502030 battery
2023-05-26