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About AOTELEC
XIAMEN AOT ELECTRONICS TECHNOLOGY CO., LTD.
AOTELEC Battery Equipment Company was set up as a battery machinery mold domestic manufacturer in 2006. After several years developing, company has ability to assembly a complete equipment for lithium ion battery in year of 2009, at the same time, we have our own design team with 7 people, total more than 30 staffs and 2300 square meters facility. In the year of 2011, we got our inport and export rights, and then start to expand our business with foreign clients. Now, AOTELEC focused on lithium battery lab line and its surrounding, we supply full kinds of lithium-ion battery lab equipment, battery materials and provide lithium-ion battery research and development technology. Our clients mainly from university laboratory and research institute all over the world. We are one of the China lithium battery equipment manufacturing, development ...
Years experience
13
Years experience
Professional Team
35
Professional Team
Researchers
16
Researchers

Why Choose Us

Testimonials
"We like to do business with AOT, they are trusted company and we got many help from them" --Dr.Tobias "It is so happy to know AOT company, very convenient for us to purchase battery lab materials" "There is no doubt that i will recommend AOT to you, very pleased to cooperate with them" ... ... ...
Pouch Cell Battery Equipment
Pouch cell battery equipment for lab, include vacuum drying oven, battery mixing machine, film coating machine, battery electrode calendring machine, electrode cutting machine, die cutting machine for pouch cell, battery stacking machine, ultrosonic spot welding machine for battery tab, heat sealing machine for pouch case, battery electrolyte filling machine, vacuum pre-sealing machine for pouch cell, standing box for pouch battery, lithium battery tester for lab, vacuum glove box etc.
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Cylinder Cell Battery Equipment
Cylindrical battery making equipment for lab and battery pilot scale line, include vacuum ove for baking battery raw materials, planetary vacuum mixer for battery slurry stirring, continuous battery coating machine for electrode preparing, roll to roll battery electrode calendring machine (battery roller press machine), battery electrode slitting machine, battery winding machine, battery spot welding machine, cylindrical battery case grooving machine, automatic electrolyte filling device, battery sealing machine for cylinder cell, cylindrical battery testing equipment, glove box, battery forming machine, battery cycler etc.
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Lithium ion Battery Pack Equipment
Lithium ion battery pack equipment for small electric tool battery, e-bike battery pack, EV battery factory, we supply cylindrical battery pack manufacturing machine, include insulator paper sticking machine, lithium battery sorting machine for 18650, 26650, 21700, 32650 cylinder cells, CCD Testing machine for battery, cylindrical batteries automatic spot welding machine, battery performance testing system, battery formation and grading tester, battery pack aging machine etc.
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Lithium Battery Cathode Materials
Lithium battery cathode raw materials for lab battery reserach, include NCM 811, NMC 622, NMC 532, NMC 111, NCMA, battery grade PVDF binder, NMP solvent, lithium cobalt oxides LCO, lithium iron phosphate LiFePO4 LFP, Lithium Manganese Oxide LMO, Lithium Nickel Cobalt Aluminum Oxide NCA, Battery grade pure aluminum foil, battery aluminum tabs, ready made battery electrodes sheets such as NCM 523 coated aluminum foil, Al foil coated with LiFePO4, carbon coated aluminum foil etc.LMOlithium manganate
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Other Lithium Battery Lab Materials
Popular lab battery materials include lithium metal chips, sodium metal chips, stainless steel coin cell cases with O-ring such as CR2032, CR2016, CR2025, CR2450 and so on, conical spring and wave spring, 304ss or 316ss coin cell spacer, PP separator, PE battery separator, tri-layers PP/PE/PP battery separator, Celgard 2400, Clegard 2500 and Clegard 2325, 2320, 3501. Small quantity of LiPF6 battery electrolyte, PTFE binder material, sodium battery electrolyte NaPF6, flexible hydrophilic carbon cloth, pure nickel foam for battery electrode, copper foam, Ti metal foam, aluminum foam, graphene oxide powder for lab, hard carbon and soft carbon for sodium battery, carbon nanotube CNT paper, aluminum laminated film for pouch cell case. AOT Battery technology can provide many other battery lab materials for your choice.
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Battery Production Line
AOT Battery Equipment Technology provide large battery machine for battery production line, include 90L vacuum oven, big planetary mixing machine, heat roller press machine with 200mm*300mm / 300mm*500mm dual roller, continuous and intermittence battery coating machine with 6-12 meters drying oven, wide blade slitting machine for battery electrode cutting, pouch cell battery case forming machine, pouch cell die cutter machine, semi-automatic battery stacking machine, automatic battery electrode stacker, automatic winding machine for cylindrical battery, automatic spot welder for battery, high voltage big current battery testing system, 2-8 workstation glove box, 512 channel battery formation and grading test equipment etc.
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Portable Energy Storage Battery
Portable energy storage batteries include battery bank, 500W-3000W outdoor power supply, 200W-5000W pure sine inverter etc.
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Laser Cutting
For lithium battery tab welding and pole piece cutting
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wning a group of experie-nced engineers And staffs, we can bring you not only reliable products and technology, but also excellent services and real value you will expect and enjoy.
Latest News
 
Debugging of the Injection Machine for Lithium Battery Manufacturing Process
Feb 23,2024.

Debugging of the Injection Machine for Lithium Battery Manufacturing Process

The injection process is a crucial step in the manufacturing process of lithium batteries, and the debugging of the injection machine is of great significance for ensuring battery performance and production efficiency. This article will discuss in detail the debugging of the lithium battery manufacturing process infection machine. 1. The importance of debugging the liquid injection machine The liquid injection machine is an important equipment in the manufacturing process of lithium batteries, and the accuracy of its debugging directly affects the performance and safety of the battery. Through debugging, it can be ensured that the various parameters of the infusion machine are set reasonably, ensuring the stability and consistency of the infusion process, thereby improving the quality and production efficiency of the battery. 2. Operation process a. Equipment inspection: Conduct a comprehensive inspection of the battery electrolyte filling machine, including electrical systems, pneumatic systems, pipeline connections, etc., to ensure that the equipment is in good condition. b. Parameter setting: According to the production process requirements, set the various parameters of the injection machine, such as injection volume, injection speed, pressure, etc. c. Debugging and operation: Start the liquid injection machine under no-load conditions, check whether the equipment runs smoothly and whether all functions are normal. Then conduct a load test to observe whether the equipment can operate normally according to the set parameters. d. Production verification: Select a small amount of batteries for liquid injection testing to verify the consistency of liquid injection effect and battery performance. e. Optimization and adjustment: Based on the production verification results, fine tune the parameters of the injection machine to achieve the best effect. 3. Parameter settings a. Injection volume: Set an appropriate injection volume based on the battery model and capacity requirements to ensure battery performance and safety. b. Liquid injection speed: Reasonably set the liquid injection speed to ensure uniform internal structure of the battery and avoid problems caused by too fast or too slow liquid injection. c. Temperature: Set an appropriate temperature according to the production process requirements to ensure the stability of lithium battery materials and injection media. 4. Precautions 1. Safe operation: During the debugging process, safety operating procedures should be followed to ensure personnel safety and equipment stability. 2. Parameter monitoring: closely monitor the changes in various parameters of the injection machine, and promptly handle any abnormalities found. 3. Cleaning and maintenance: Keep the infusion machine and its surrounding environment clean, and regularly maintain the equipment. 4. Recording and reporting: Detailed recording of the debugging process, timely reporting of abnormal situations fo...
2024 Chinese New Year Holidays Notice
Feb 1,2024.

2024 Chinese New Year Holidays Notice

Dear friends: The Spring Festival of 2024 is approaching, thank you for your strong support and trust in us all along. According to company regulations, the holiday  is 2024/2/3-2024/2/17, 15days. Officially starting work on February 18, 2024 We apologize for any inconvenience caused during this period and sincerely apologize for your understanding! In 2024, we will continue to provide you with good products and services. Grateful for having you, moving forward all the way!
The Importance of Lithium Battery Separator Materials
Jan 17,2024.

The Importance of Lithium Battery Separator Materials

  Lithium batteries have completely changed every field from consumer electronics to electric vehicles, and separators play a crucial role in their performance and safety. Battery separator is one of the materials used in lithium batteries   The battery separator, anode electrode material, cathode electrode material, and electrolyte are the most important lithium-ion battery materials, accounting for approximately 4% of the total cost of lithium-ion battery materials. The lithium battery separator has a large number of tortuous and interconnected micropores, which can ensure the free passage of battery electrolyte ions and form a charging and discharging circuit. Its main function is to isolate the anode and cathode electrodes, preventing battery short circuits.   At the same time, ensure that lithium ions pass through the microporous channels normally during charging and discharging, ensuring the normal operation of the battery. The performance of the battery separator determines the key characteristics of lithium-ion batteries, such as internal resistance, capacity, cycling performance, and charge discharge current density.   At present, the commercialized lithium battery separators mainly include polyethylene (PE) separators, polypropylene (PP) separators, and PE and PP composite multilayer microporous membranes. PE battery separator has high strength and a wide processing range. PP membranes have high porosity, breathability, and mechanical properties. Ordinary 3C batteries mainly use single-layer PE separator or single-layer PP battery separator.   Power batteries generally use PE/PP double-layer battery separators, PP/PP double-layer separators, or PP/PE/PP three-layer separators. However, polyolefin membranes have very obvious drawbacks, such as thermal stability and insufficient wettability of electrolytes, which makes the coating and modification of polyolefin membranes a trend direction. Production process of battery separator   The production process of battery separators is mainly divided into two categories: wet method and dry method. The production process of lithium-ion battery separators includes raw material formula and rapid formula adjustment, microporous preparation technology, and independent design of complete equipment. Among them, microporous preparation technology is the core of lithium-ion battery separator preparation process, which can be divided into dry stretching and wet stretching according to the type of process.   Dry separators have high safety and low cost, and are often used in large lithium iron phosphate power batteries. Due to its thin thickness and high porosity, wet diaphragm has a higher uniformity of pore size and higher permeability. Compared with dry separators, it has certain advantages in mechanical performance, breathability, and physicochemical properties, so it is more widely used in ternary batteries that focus on energy density.   Membrane coating is the ...
Wish You A Merry Christmas and A Happy New Year
Dec 26,2023.

Wish You A Merry Christmas and A Happy New Year

“We wish you a merry Christmas, We wish you a merry Christmas and a happy new year...” When you hear this familiar melody, it's Christmas time. Christmas is a holiday celebrated on December 25th each year to commemorate the birth of Jesus Christ. It is one of the most important holidays for Christians worldwide and is also a traditional holiday celebrated by many non-Christians. During Christmas, people often decorate Christmas trees, exchange gifts to express their love and blessings for each other. Furthermore, many families also host grand Christmas dinners, inviting relatives and friends to celebrate Christmas together. Christmas is a joyful and meaningful holiday. And AOTELEC (lithium ion battery equipment manufacturer) wish all of our friends and clients a merry Christmas! After Christmas, New Year's Day is approaching. New Year's Day is the first day of the lunar calendar. It represents a new beginning when people send off the old days and welcome the new ones. We would like to take this opportunity to thank you for your kind support all this while. Our company will be closed from Dec 30 to Jan 1, in observance of the New Year's Day. Any orders will be accepted but will not be processed until Jan 2 , the first business day after the New Year's Day. Sorry for any inconvenience caused.
Lithium Battery  Material and Vacuum Lab Shipped to America
Dec 21,2023.

Lithium Battery Material and Vacuum Lab Shipped to America

AOTELEC has packaged a batch of lithium-ion battery materials and laboratory equipment for lithium-ion batteries, and is preparing to send them to the port. This batch of lithium-ion battery materials mainly includes lithium iron phosphate, coin cell battery cases, etc. The equipment includes 2 sets vacuum ovens,  electronic balance, crimping machine, and a ball mill. We can provide lithium-ion battery materials, including cathode materials, anode materials, as well as sodium battery materials.
Pouch Cell Battery Equipment Shipped to Sri Lanka
Nov 9,2023.

Pouch Cell Battery Equipment Shipped to Sri Lanka

Today, the pouch cell battery machine lab line shipped to Sri Lanka ,the equipment mainly includes the following types:  Vacuum drying over, Battery mixing machine, Film coating machine, Battery electrode calendering machine, e Ectrode cutting machine, Die cutting machine for Pouch cell, Battery stacking machine, Ultrasonic spot welding machine for battery tab, Heat sealing machine for Pouch case, Vacuum pre-sealing machine for touch cells, s etc     AOT battery also provides various battery materials, including cathode materials, anode materials,  battery cases, battery separators, electrolytes, etc. Solid state battery materials: NPSCl (Na5.5PS4.5Cl1.5) LLZO,NASICON etc.; Sodium ion battery materials: Prussian blue Prussian white, hard carbon, Sodium metal disks chips . sodium foil etc.
Analysis of Positive Electrode Materials for Sodium Ion Batteries
Oct 20,2023.

Analysis of Positive Electrode Materials for Sodium Ion Batteries

1. Layered oxide cathode material Layered oxides  in sodium ion batteries material have inherent cost advantages, not only because these materials can learn from the highly mature solid-state or co precipitation methods commonly used in lithium-ion batteries to achieve low-cost large-scale production, but also because they have a rich selection of active elements. The chemical formula of layered oxide positive electrode materials for sodium ion batteries can be expressed as NaxTMO2 (x ≤ 1, where TM is one or more of the 3D transition metals such as Ni, Mn, Fe, Co, Cu, etc.). By studying the coordination environment of sodium ions and the stacking mode of oxygen, layered oxides can be classified into the following categories: 2. Polyanionic positive electrode material Polyanion positive electrodes have better thermal stability and thus better safety, but their biggest drawback is their low electronic conductivity, which prevents them from charging and discharging under high currents, and their specific capacity is low. Therefore, its conductivity is often improved by coating and doping, thereby improving its electrochemical performance. The general formula of polyanionic compounds can be expressed as NaxMy [(XOm) n –] z, where M is an electrically active transition metal and X is a non-metallic element such as P, S, Si, etc. Among them, sodium vanadium phosphate [Na3V2 (PO4) 3] material with NASCON (Na Super ionic conductor) structure has high voltage and specific capacity. 1.3 Prussian Blue Cathode Materials The Prussian blue cathode material has a perovskite like structure and a face centered cubic structure. The molecular formula is AxM [Fe (CN) 6] y · zH2O (0
Pouch Cell Battery Equipment Machine Ready To Ship
Sep 25,2023.

Pouch Cell Battery Equipment Machine Ready To Ship

1.Small Vacuum Slurry Mixer Machine AOT-AX-2000 2.53L Vacuum Drying Oven  For Lab Battery Raw Material Baking AOT-DZF-6050 3.Automatic Pouch Cell Stacking Machine AOT-MSK-111A-ES 4.Heating Sealer Machine For Pouch Cell Case Top And Side SealingAOT-TSS-200 5Aluminum Laminated Film Forming Machine AOT-MPF-200 6Pole Piece Electrode Die Cutting Machine  AOT-DC-80 7.2000W 20KHz Ultrasonic Spot Welder Machine AOT-USW-2000W 8. Pouch Cell Hot Press Shaping Machine AOT-HPS-200H
What are the Causes of Excessive Battery Internal Resistance
Sep 12,2023.

What are the Causes of Excessive Battery Internal Resistance

In terms of technology:   1. The positive electrode ingredient has too little conductive agent (the conductivity between materials is not good because the conductivity of lithium cobalt itself is very poor) 2. There is too much adhesive for the positive electrode ingredient. (Adhesives are generally polymer materials with strong insulation properties) 3. Excessive adhesive for negative electrode ingredients. (Adhesives are generally polymer materials with strong insulation properties) 4. Uneven distribution of ingredients. 5. Incomplete binder solvent during ingredient preparation. (Not completely soluble in NMP, water) 6. The density design of the coating slurry surface is too high. (Long ion migration distance) 7. The compaction density is too high, and the rolling is too compacted. (Excessive rolling may cause damage to the structure of active substances) 8. The positive electrode tab is not firmly welded, resulting in virtual welding. 9. The negative electrode ear is not firmly welded or riveted, resulting in false soldering or detachment. 10. The winding is not tight and the core is loose. (Increase the distance between positive and negative electrode plates) 11. The positive electrode ear is not firmly welded to the housing. 12. The negative electrode ear and pole are not firmly welded. 13. If the baking temperature of the battery is too high, the diaphragm will shrink. (Reduced diaphragm aperture) 14. Insufficient liquid injection amount (conductivity decreases, internal resistance increases quickly after circulation!) 15. The storage time after liquid injection is too short, and the electrolyte is not fully soaked 16. Not fully activated during formation. 17. Excessive leakage of electrolyte during the formation process. 18. Insufficient water control during the production process, resulting in battery expansion. 19. The battery charging voltage is set too high, causing overcharging. 20. Unreasonable battery storage environment.   In terms of materials: 21. The positive electrode material has high resistance. (Poor conductivity, such as lithium iron phosphate) 22. Impact of battery separator material (separator thickness, small porosity, small pore size) 23. Effects of battery electrolyte materials. (Low conductivity, high viscosity) 2 24. Positive electrode PVDF material influence. (high in weight or molecular weight) 25. The influence of positive electrode conductive material. (Poor conductivity, high resistance) 26. Effects of positive and negative electrode tab materials (thin thickness, poor conductivity, uneven thickness, and poor material purity) 27. Copper foil and aluminum foil materials have poor conductivity or surface oxides. 28. The riveting contact internal resistance of the cover plate pole is too high. 29. The negative electrode material has high resistance. 30. Deviation of internal resistance testing instruments.  
Improving Battery Safety Technology From the Perspective of Electrolyte
Aug 23,2023.

Improving Battery Safety Technology From the Perspective of Electrolyte

The electrolyte is in a harsh living environment. It faces the strong reducibility of the negative electrode and the strong oxidation of the positive electrode. Adding flame retardants to make the electrolyte non combustible and reduce its flammability is an effective way to improve the safety of batteries. However, this approach has limited improvement in battery safety, especially when the capacity of commercial batteries exceeds 100 ampere hours, and flame retardants cannot stop them,Because the combustion of batteries is contributed by combustible gases.   During the process of thermal runaway, there are two factors that lead to thermal runaway safety. One contributes to combustible gases, and the other contributes to oxygen and temperature.   The first is combustible gas: Flame retardants can only ensure that the electrolyte is not combustible in a liquid state, but the negative electrode reacts with the electrolyte to produce a large amount of reducing gas, which is flammable and provides a foundation for combustion.   The second is that the exothermic reaction of the battery body provides high temperature. The solid body generates oxygen when heated at around 200 degrees Celsius, and the solid part of the battery provides a high-temperature environment; Combustible gases themselves can burn, and the solid part provides a temperature, which inevitably leads to combustion.   By changing the reaction path between the electrolyte and the negative electrode, reducing the types and quantities of reducing gases, the safety of the battery can be improved from this perspective. In the thermal runaway test, there are three temperatures that represent different physical meanings:   T1 represents the battery entering the self heating stage, where the negative electrode reacts with the electrolyte to form a reducing gas. The reducing gas flows to the positive electrode, attacking the lattice of the positive electrode, causing a phase transition and oxygen release. Oxygen reacts with EC in the electrolyte, causing a temperature increase. Form T2, which is the triggering temperature for thermal runaway. The time spent in the temperature range of T1 and T2 is relatively long, and work can be done from passive protection. The positive and negative poles react violently, forming the highest temperature T3.   Regulation method: 1. Electric regulation: discharge control of the battery. Because the reaction is for electrons, through discharge, electrons are released, and if electrons are not released, reducing gases cannot be generated. 2. Gas regulation: Use intelligent exhaust valves to forcibly exhaust, avoiding crosstalk, accumulation, and combustion. 3. Cooling: Reduce reaction speed. 4. Poisoning agent: Release a poison agent on the composite collector to absorb the gas. 5. Reduce or block the path of combustible gas production. For example, EC free, or reducing the amount of EC electrolyte, such as perfluorinated electrolyt...
Sodium ion Battery Material Na Metal Chips Shipment
Aug 3,2023.

Sodium ion Battery Material Na Metal Chips Shipment

The working principle of Sodium-ion battery is the same as that of lithium ion battery, that is, during the charging and discharging process, lithium ion is inserted/de inserted and inserted/de inserted back and forth between the positive and negative electrodes, which is also called "rocking chair battery". Lithium ion batteries mainly rely on the movement of lithium ions between the positive and negative electrodes, using embedded lithium compounds as the positive electrode material. The working principle of Sodium-ion battery is: during charging, Na+is disembedded from the positive electrode and embedded into the negative electrode through battery electrolyte; When discharging, the opposite is true. Sodium battery, with its abundant resource reserves and significant advantages in low-temperature performance, rate performance, and cost compared to lithium battery, gradually demonstrates the potential for specific scenarios. AOTELEC provides sodium ion battery materials. Recently, sodium metal shipped to countries such as South Korea, the United States, Germany, etc. Sodium chips is specially designed for button batteries (2032, 2025, 2016) to use composite sodium sheets, with a diameter of 15.6mm, a thickness of 0.45 mm, and a purity of more than 99.7%. It adopts quadruple protection packaging technology, which can be stored for a long time and can be used as needed. Please contact me if you need sodium ion materials or sodium ion metal chips.
Coin Cell Battery Machine and Sodium ion Battery Electrolyte Shipped To USA
Jul 27,2023.

Coin Cell Battery Machine and Sodium ion Battery Electrolyte Shipped To USA

American clients need to establish a research laboratory for sodium ion batteries. At the end of last month, we received an order for coin battery production line equipment. Including Compact Vacuum Film Coating Machine, Hot Roller Press Machine,Coin Cell Crimper Machine,sodium ion metal chips, sodium ion battery electrolyte .etc. This is a packaging information image, all packaging is standard export packaging. Please find photos for your reference. AOTELEC provide a complete set of Sodium battery manufacturing equipment and materials,If you are interested, please contact me.
AOTELEC Becomes a Tesla Supplier
Jul 12,2023.

AOTELEC Becomes a Tesla Supplier

After more than a year of hard work, AOTELEC has become a supplier to Tesla. For over a year, we started sending samples for testing, passed the final test, and placed orders. Thank you to Tesla for recognizing AOTELEC's services and the quality of sodium battery materials. I hope to achieve more cooperation in the future. This order mainly sodium battery materials, including sodium matal chips and some other sodium battery materials. These sodium chips are used for sodium-ion coin cell battery research. The sodium chip is covered with 30um aluminum foil on one side as a support and current collector, and also plays the role of protecting the sodium. SThese sodium chips have uniform size, smooth and bright surface, and can be stored for a long period of time. For the thickness, the sodium is 0.45mm and the Al protection layer is 30um with a blue cover.
Automatic Stacking Machine For Pouch Cell  Battery Shipped To USA
Jun 12,2023.

Automatic Stacking Machine For Pouch Cell Battery Shipped To USA

Pouch cell battery automatic stacking machine ready to ship USA,This is our old customer who bought a stacking machine with a thickness of 70mm last year. This year, due to factory expansion, we have added two identical stacking machine equipment. After 20 days of production and experimentation, we are preparing to send it to the customer today. Features: 1. Battery separator: active unwinding; constant tension control; full correction of the separator; static removal of the separator; alignment accuracy of the separator±0.5mm. 2. High precision: Through the precise positioning of the pole piece, the overall accuracy of the battery electrode sheets in the stack is guaranteed to be±0.5mm. 3. Efficiency: The lamination speed can reach 1.6s~2s/Pcs (auxiliary time 10S). 4. Reliability: The high-precision and frequently moving modules of the equipment are fixed with positioning pins. 5. Simple changeover: both the pole piece gauge structure and the stacking table are equipped with positioning pins. When changing the type, you only need to insert the mold into the corresponding positioning pins. According to the requirements of operating level, the start-up personnel can change the model by themselves after simple training. 6. Humanization: It has a perfect alarm prompt function;
Electric Box Muffle Furnace and 1700 Vacuum Tube Furnace Shipped
May 31,2023.

Electric Box Muffle Furnace and 1700 Vacuum Tube Furnace Shipped

AOTELEC is a high-end laboratory furnace supplier, we can provide customizable tube furnaces, atmosphere furnaces, elevator furnaces, box furnaces,Muffle Furnace etc. The laboratory 1400C Electric Box Muffle Furnace and 1700 Vacuum Tube Furnace have been packaged and ready to be shipped to customers in the United States. AOT-GSL-1750X vacuum tube type high temperature furnace uses silicon molybdenum rod as heating element, rated temperature is 1700℃, adopts B type double platinum rhodium thermocouple temperature measurement and 518P temperature controller automatic temperature control, with high temperature control precision (±1℃).
Lab Pouch Cell Making Machine Shipped To Canada
Mar 23,2023.

Lab Pouch Cell Making Machine Shipped To Canada

Yesterday, our laboratory pouch cell equipment was shipped to our Canada customers. These pouch cell battery machine mainly include battery testers, Li-ion Battery Vacuum Sealing Machine、Battery Heat Sealing Machine ,Ultrasonic Metal Spot Welding Machine , Vacuum Mixing Machine ,etc. The mold design and head selection of packaging equipment for flexible battery equipment are crucial. When using hard sealing, it is possible to add silica gel to the hard head to compensate for the lack of top sealing with the deformation of silica gel. Alternatively, it is also possible to design the mold for hard sealing, digging a groove to match the lug for packaging. When using soft sealing, it is not necessary to consider so much, but it is necessary to pay attention to the packaging process of soft sealing, verify the sealing performance of the packaging, and aging issues of high-temperature resistant adhesive. AOTELEC Battery Machine is specialized in lithium battery industry, our company can provide lithium battery making machine and lithium battery material, if you are interested in it, feel free to contact us!
Internal Resistance Composition of Lithium Battery
Mar 15,2023.

Internal Resistance Composition of Lithium Battery

The internal impedance consists of the following parts Ionic Resistance ① Electrolyte inside the battery separator Influencing factors: electrolyte conductivity, battery separator area, thickness, porosity, tortuosity coefficient (Gurley). ② Electrolyte inside the battery anode material Influencing factors: electrolyte conductivity, positive electrode thickness, thickness, porosity, tortuosity coefficient. ③ Electrolyte inside the battery cathode material Influencing factors: electrolyte conductivity, positive electrode thickness, thickness, porosity, tortuosity coefficient. Electronic resistance ① Active substances of two electrodes Influencing factors: electrode conductivity, thickness and area ② Fluid collection (copper foil and aluminum foil) Influencing factors: thickness, width and length of fluid collection, number and position of pole lugs ③ Lead wire (aluminum Tab , nickel Tab , internal conductive connection element) Influencing factors: overall dimension, conductivity Contact resistance between active substance and fluid collector Positive material and aluminum foil, negative material and copper foil. Make an equivalent circuit diagram of the electrode, which is mainly composed of ohmic impedance Rb, double-layer capacitance Cd, electrochemical reaction impedance Rct and diffusion resistance Rw. In the process of lithium ion insertion and removal cycle, the change of Rb value is generally small, while the change of Cd and Rct is relatively obvious.    The battery impedance is mainly reflected in the electrochemical reaction impedance, while the ohmic    impedance is relatively small. With the decrease of temperature, the impedance of the battery gradually rises, and when it drops to 0 ° C, the impedance speed increases, and the cathode impedance presents a similar trend. From the numerical point of view, the impedance of the battery mainly comes from the contribution of the cathode impedance. In fact, during the whole cycle of the battery, the impedance of the cathode occupies the main part of the impedance of the whole battery, which is only slightly smaller than the impedance of the whole battery. With the progress of the charge-discharge cycle, the impedance of the cathode increases, and the impedance of the battery also increases. Therefore, special attention should be paid to the cathode resistance test (resistance tester) in the process of electrode fabrication, and the electrode sheet resistivity is particularly important.
Lithium Battery Winding Machine Analyze
Feb 24,2023.

Lithium Battery Winding Machine Analyze

The lithium battery winding machine is used to wind lithium battery cells. It is a machine that assembles the positive electrode sheet, negative electrode sheet and battery separator into a core pack (JR: JellyRoll) in a continuous rotating manner. Winding machine principle The lithium battery winding machine has a positive and negative electrode feeding unit, and the mechanism that winds the positive electrode, negative electrode and separator together is called a winding needle.According to the shape of the battery core, it is mainly divided into square and cylindrical battery cell winding machines. Generally, the winding equipment adopts the structure of two or more winding needles and single-side needle pulling. The main mechanisms of the winding machine are: positive and negative pole pieces and diaphragm active unwinding, pole piece and diaphragm rewinding, automatic deviation correction, automatic tension detection and control. The pole piece is introduced into the winding needle part by the pinch roller driving mechanism, and is wound together with the diaphragm according to the process requirements. After the winding is completed, the station is automatically changed, the diaphragm is cut off, and the termination tape is attached. After the finished bare cells are automatically unloaded, after pre-pressing and code scanning, the good-quality finished bare cells are automatically transferred to the tray and then transferred to the subsequent process. The defective bare cells are automatically unloaded to the collection place for defective bare cells. Winding Mechanism Description ①Pre-winding: The initial feeding process of the positive and negative pole pieces.It is necessary to control the rotation angle and speed of the winding needle to match the pole piece feeding mechanism.this process involves two synchronizations: the unwinding speed of the diaphragm is synchronized with the needle winding speed, and the pole piece feeding speed is synchronized with the needle winding speed. ②Winding process: After the initial feeding process of the positive and negative electrodes is completed, the positive and negative electrodes are tightly wrapped by the separator and wound around the winding needle, and the continuous winding can be realized by turning the winding needle subsequently. In this process, the unwinding speed of the pole piece unwinding motor is adjusted by detecting the tension of the material roll to ensure the constant tension of the material roll during the winding process. The control problem in pre-winding is an open-loop control problem. Whether the real synchronization between the winding needle, diaphragm and pole piece cannot be accurately measured, which requires us to establish an accurate winding control model. Especially for the winding requirements of larger batteries. The tension of the material tape in winding can be controlled by closed-loop feedback control technology. ③Dynamic control model of the winding proce...
The First Symposium on Energy Storage and Na-Ion Batteries and Vanadium Batteries
Feb 10,2023.

The First Symposium on Energy Storage and Na-Ion Batteries and Vanadium Batteries

Vigorously developing photovoltaic and wind power is the only way to achieve the double carbon goal, and energy storage is a necessary supporting means to solve the instability of photovoltaic and wind power. Electrochemical energy storage has the advantages of high efficiency, fast response, and is not restricted by geographical environment. It is suitable for the smoothing of wind power generation on the supply side and also for power management on the demand side. Due to the advantages of abundant resources, low cost, and high safety, sodium-ion batteries and vanadium redox flow batteries have received high attention. The first seminar on energy storage and sodium-ion batteries and vanadium batteries will be held in Suzhou on February 10, 2023. The main content of the meeting will discuss sodium-ion battery materials 1.Research and development of electrolyte sodium batterie electrolyte; 2.Research progress of hard carbon as anode material for sodium batteries; 3.Key technologies for the production of Prussian blue cathode material for sodium batteries;
Notification of Chinese Spring Festival Holiday
Jan 15,2023.

Notification of Chinese Spring Festival Holiday

Notification of Chinese Spring Festival Holiday Dear all valued clients: Thank you all for the support in year of 2022! AOTELEC keep providing quality products and services as always, We hope that we can have more cooperation next year, win-win cooperation. Now we want to inform you that our Chinese Spring Festival holiday period: 2023-1-16 to 2023-1-29, total 14 days. We will go back to work on Monday (30th January 2023). During the holidays, We may not be able to respond to you in time, If there is an emergency, you can try to call 0086-592-7161550, thank you! AOTELEC BATTERY EQUIPMENT MANUFACTURER  wish you a happy new year! Best wishes, AOTELEC GROUP 2023-1-15
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