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℃).

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!

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.

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...

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 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

The pouch cell battery laboratory assembly machine will be shipped to the UK. These battery machines have been checked and packed and sent to customers in the UK. This is our new customer. Find us through the introduction of old customers. Later, through a series of details and technical communication, the order was delivered to us at the end of October. Now, the equipment has been produced and will be sent to the customer soon. These battery machine are mainly used for pouch cell battery laboratory research. (Including Aluminum Laminated Film Forming Machine, vacuum sealing machine, Automatic Pouch Cell Stacking Machine, planetary ball mill, etc.) It also includes some lithium battery materials.(Nick tab,Copper Foil,Aluminum Foil,etc) If you need these battery devices and lithium battery materials, please contact me.

Yesterday, a 1750 degree vacuum tube furnace was shipped to Cambodia. This client is a listed company,Because customers believe in the quality and service of AOT, they choose to cooperate with us. 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℃). In addition, the furnace has a vacuum device that can work in a variety of atmospheres, greatly increasing its range of use. The furnace has the advantages of high temperature, high precision temperature control, simple operation and convenient maintenance, and can be widely used in metallurgy, machinery, light industry, commodity inspection, higher education institutions and scientific research departments. AOTELEC is specialized in lithium battery,supercapacitor battery equipments and lithium battery materials, provides high-quality products and the most professional technical services. If you are interesting in this, feel free to contact with us.

This customer is an old customer in the United States. Last year, he purchased a battery stacking machine because the customer expanded its production capacity. In early September, he asked us to purchase the same battery stacking machine.This time  also purchased some lithium battery materials, including copper foil, aluminum foil, separator, etc.) The battery separator is automatically unrolled and introduced into the stacking table through the tension mechanism. The stacking table drives the separator to move back and forth to perform Z-shaped stacking. The anode electrode sheets are stacked first, and the two sets of manipulators respectively take the cathode and anode electrodes out of the two material boxes, and stack them on the stacking table after precise positioning. After the lamination is completed, the cells are transferred by the manipulator. 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; AOTELEC is specialized in lithium battery,supercapacitor battery equipments and lithium battery materials, provides high-quality products and the most professional technical services. If you are interesting in this, feel free to contact with us.

In electrodes, binders are polymer compounds used to adhere electrode active materials to current collectors. Its main function is to bond and maintain the active material, enhance the electronic contact between the electrode active material and the conductive agent and the active material and the current collector, and better stabilize the structure of the pole piece. For the positive and negative electrodes of lithium-ion batteries that expand and contract in volume during charging and discharging, the binder is required to play a certain buffering role. To choose a suitable lithium-ion battery binder, it is required that its ohmic resistance should be small, its performance is stable in the electrolyte, and it will not expand, loosen, or remove powder. Generally speaking, the performance of the binder, such as adhesion, flexibility, alkali resistance, hydrophilicity, etc., directly affects the performance of the battery. By adding the optimal amount of binder, larger capacity, longer cycle life and lower internal resistance can be obtained, which can promote the improvement of battery cycle performance, rapid charge and discharge capability, and reduction of battery internal pressure. . Therefore, it is very important to choose a suitable binder. 1. The role and performance of the adhesive (1) Ensure the uniformity and safety of the active substance during pulping; (2) It has a bonding effect on the active material particles; (3) bonding the active material on the current collector; (4) Maintain the bonding between active substances and between current collectors; (5) It is beneficial to form the SEI film on the surface of the carbon material (graphite). 2. Performance requirements for adhesives (1) It can maintain thermal stability when heated to 130-180℃ during drying and dewatering; (2) can be wetted by organic lithium battery electrolyte; (3) It has good processing performance; (4) Not easy to burn; (5) It has relatively high electronic ion conductivity; (6) The dosage is small and the price is low; In lithium-ion batteries, due to the use of organic electrolytes with low electrical conductivity, the electrode area is required to be large, and the battery assembly adopts a roll structure. The improvement of battery performance not only puts forward new requirements for electrode materials, Also, new requirements are placed on the adhesives used in the electrode manufacturing process. At present, polyvinylidene fluoride (lithium battery material PVDF) is widely used in industry as a binder for lithium-ion batteries, and N-methylpyrrolidone (NMP) is used.

The pouch cell battery machine laboratory line sent to Germany in July, after two months, the customer's laboratory was finally built.The main equipment includes battery tester,  pouch cell forming machine,electric hot roller press machine,ultrasonic spot welder ,etc. The photo below is sent by the customer Customers are very satisfied with our equipment and service look forward for next deal. AOTELEC can provide a complete set of battery pack machine assembly, as well as the corresponding complete solution. If you are interested, you are welcome to contact me!

The two vacuum ovens AOT-DZF-6050 are expected to be packaged and scheduled to be shipped today. Sent to Purdue University, USA. When each equipment is shipped, we will carefully check and test the machine to ensure that the customer can use the equipment normally after receiving the goods. This Vacuum Drying Oven for lithium battery field mainly used for lithium battery materials, electrode and battery core vacuum drying. Vacuum Lab Oven for material heating drying under vacuum states has advantages : 1. It canshort the drying temperature process 2.Avoid heating to oxidation 3.Avoid heating air to kill living cells 4. There is no dust damage AOTELEC is a manufacturer of lithium battery equipment(coin cell battery equipment,pouch cell battery equipment,cylindrical battery equipment) , lithium battery materials, technology, etc. Has a group of experienced engineers and employees to provide product and technical support. If you are interested, please contact me Email: Email: kaka@aotbattery.com

The AOT-HRP-100 Hot Roller Press Machine is currently being tested and will be shipped to the United States. This is a 100mm width lab lithium battery electric rolling press machine with heating function. it is mainly for battery electrode sheet thinning and calendering. Features : 1. Heat rolling, temperature can be regulated & digital displayed. 2. Rolling hardness is high, surface plated by chrome treatment that hardness can reach HRC 62 and anti-rust. 3. Install transparent protection plates for safety use. 4. Vertical design for convenient feeding and pressing of strip and piece materials. 5. Use gear engagement to accomplish rolling press. 6. Thickness and speed can be regulated. 7. Electric rolling makes automation 8. Small dimension, convenient and operation, flexible and quick use. This customer is a university research institute, which has purchased some lithium battery materials before Mainly include lithium chips, carbon cloth, copper foil, etc. We AOTELEC provide lithium battery equipment and lithium battery materials, please contact me if necessary. Email: kaka@aotbattery.com

2022 /7/22 We shipped Li-ion battery  machine to Korea. Equipment includes Lithium Battery Stacking Machine, Slurry Vacuum Film Coating Machine,Coin Cell Crimping Machine,Die Cutter Machine for Pouch Cell Electrode Cutting etc. Shipping pictures are as follows： AOTELEC is specialized in lithium battery,supercapacitor battery equipments and lithium battery materials, provides high-quality products and the most professional technical services. If you are interesting in this, feel free to contact with us. E-mail:kaka@aotbattery.com

Yesterday (2022/7/20) 256 Channel Battery Formation and Grading Tester Shipping to the Netherlands,We will debug before delivery to ensure that the equipment can be used normally after the customer receives it. Technical specifications 1 This equipment is mainly constituted by the computer system and control software, communication interface and battery detecting cabinet. 2 The Battery detecting cabinet comprises a fixture and placed the plate body of the fixture, charging, constant current and constant voltage source discharge constant current source, storage control circuit, current sampling circuit, voltage sampling circuit, the main control CPU, data memory, micro controller programming and control panel. 3 The tester is specially used for lithium ion Cylindrical Cell 18650 battery Formation and grading. In addition, the choice of battery tester mainly depends on the following parameters: 1. Which kind of battery tested (cylindrical battery/button battery/pouch cell battery) 2. Maximum charge and discharge current and voltage. 3. Which performance of the battery is tested? 4. Does the minimum discharge voltage need to reach 0V? We at AOTELEC are lithium-ion battery production equipment and lithium battery material suppliers, if you are interested in lithium-ion raw materials and manufacturing equipment, please contact me. Email is: kaka@aotbattery.com

On July 12, 2022, we sent lithium battery laboratory equipment to Irish customers for research on coin cells battery, including Roller Press Machine, Coin Cell Crimper Machine , Coin Cell Case etc. We believe our battery equipment can help customers and we can get more cooperation in the future. AOTELEC focuses on the lithium ion battery industry, providing lithium battery equipment and lithium battery materials, sodium battery materials, etc. If you are interested in lithium battery research or production, please feel free to contact us. Email: kaka@aotbattery.com

The coating machine has been packaged and will be shipped to customers in Germany by DHL express.This is a university in Germany that bought our Crimping Machine and Electric Vacuum Mixer.Customers say that our equipment quality and service are very satisfied, and they will buy from us next time. This is a touch-screen film coater which widely used in all kinds of high- temperature film coating research,like ceramic films, crystal films, battery material films, and special namo-films, and can adapt to the technology development of high temperature film coating in future. AOTELEC also supplies lithium battery materials and sodium battery materials. If you are interested, please contact me

The anode electrode of lithium ion battery is made of anode electrode active material carbon material or non-carbon material, binder and additive to make paste glue, which is evenly spread on both sides of copper foil, dried and rolled. The cathode material is the main body of lithium ion battery to store lithium, so that lithium ions are inserted and extracted during the charging and discharging process. The current lithium-ion battery anode materials have developed from a single artificial graphite to natural graphite, mesocarbon microspheres, artificial graphite, soft carbon/hard carbon, amorphous carbon, lithium titanate, silicon carbon alloy and other negative electrodes material coexistence. Negative material: graphite is mostly used. New research finds that titanates may be a better material. Negative reaction: lithium ions are inserted during charging, and lithium ions are de-inserted during discharge. When charging: xLi++ xe-+ 6C → LixC6 When discharging: LixC6 → xLi++ xe-+ 6C. Lithium-ion battery anode materials are roughly divided into six types: carbon anode materials, alloy anode materials, tin-based anode materials, lithium-containing transition metal nitride anode materials, nanoscale materials, and nanoscale anode materials. The first is carbon anode material: the battery anode materials actually used in lithium-ion batteries are basically carbon materials, such as artificial graphite, natural graphite, mesocarbon microspheres, petroleum coke, carbon fiber, pyrolysis resin carbon, etc. The second is tin-based negative electrode material: tin-based negative electrode material can be divided into two kinds of tin oxide and tin-based composite oxide. Oxides refer to oxides of metal tin in various valence states. The third is the lithium-containing transition metal nitride anode material. The fourth is alloy-based negative electrode materials: including tin-based alloys, silicon-based alloys, germanium-based alloys, aluminum-based alloys, antimony-based alloys, magnesium-based alloys and other alloys. The fifth is nanoscale anode materials: carbon nanotube and nanoalloy materials.

Today, our lithium battery current collector materials are packaged and shipped to India, mainly in the following categories:Aluminum foil；Copper foil；Nickel foam；’Carbon cloth；Carbon coated aluminum foil , etc. The current collector is one of the indispensable components in the lithium-ion battery. It can not only carry the active material, but also collect and output the current generated by the electrode active material, which is beneficial to reduce the internal resistance of the lithium-ion battery and improve the battery's performance. Coulombic efficiency, cycling stability and rate capability. We are AOTELEC, we not only provide battery materials, but also battery equipment, please contact me if you need.

The electrolyte is an ionic conductor that conducts conduction between the positive and negative electrodes of the battery. During the charging and discharging process, lithium ions are transported back and forth between the positive and negative electrodes. The infiltration of the electrode piece by the electrolyte involves the three-phase contact of solid, liquid and gas.When the electrolyte is injected into the battery case, the air in the case should be discharged from the electrolyte first, and then the electrolyte will adhere to the surface of the positive and negative active materials. Some electrolytes will enter between the positive electrode-separator-negative electrode through the separator of the winding core.With the continuation of time, there will be the phenomenon that the electrolyte infiltrates the pole piece and the electrolyte in the diaphragm reversely infiltrates the pole piece. When the standing time is long to a certain extent, under the action of surface tension, the infiltration of the pole piece reaches a balanced state. How to improve the wettability of electrolyte: (1) Improve the liquid injection process (2) Improve the core winding process (3) Add electrolyte wetting agent