News

The planetary mixer, coating machine, and rolling press machine have been inspected and can be used normally. The devices are all packaged up and ready to ship. Email : tob.amy@tobmachine.com Skype : amywangbest86 Whatsapp/Phone number : +86 181 2071 5609

Recently received TOB NEW ENERGY obtained 3 new patent certificates Including: 1.    Cylindrical Cell Case 2.    Battery Film Press and Calendering and Device 3.    Lithium Battery Dry Electrode Film Roll Press Device In 2022 TOB NEW ENERGY also got 15 patent certificates. Including: 1.     Battery sorter with anti-blocking mechanism 2.     Lithium battery coater with continuous feeding device 3.     Electrode cutting machine with cleaning device 4.     Battery sorter 5.     Battery sealing machine 6.     Battery cutting machine 7.     Slurry feeding machine for large scale mixer 8.     Lab coater 9.     Electrode roller press 10.   Sealing machine with replaceable sealing die 11.   Large scale mixer 12.   Electrode dust removal device 13.   Battery electrode rolling press machine 14.   Electrode winding machine 15.   Battery coating machine heating device

The function and principle of the battery cap (1) Positive or negative terminal (2) Temperature protection function: PTC (sudden increase in resistance, cut off current) (3) Power-off protection function: CID current disconnecting device (Inner pressure rises → Vent flips → CID solder joints break) (4) Pressure relief protection function: Vent (Inner pressure rises → Vent flips → CID solder joints break → pressure continues to rise → Vent ruptures) (5) Sealing function: waterproof, gas intrusion, anti-electrolyte evaporation Key points of cap design (1) Reduce the height of the cap (2) Vent's double-sided notch is optimized to single-sided notch, and Vent's blasting and flipping consistency is better (3) Using duralumin CID application, the Vent notch is not easy to stretch and deform, and its blasting consistency is better  Email : tob.amy@tobmachine.com  Skype : amywangbest86  Whatsapp/Phone number : +86 181 2071 5609

The evolution stage of lithium-ion battery conductive agents ranges from zero-dimensional conductive agent carbon black materials to one-dimensional fiber-like carbon nanotube materials, and then to two-dimensional graphene materials with lamellar structure.   Conductive agent materials are an important part of lithium-ion batteries and play an important role in the electrochemical performance of lithium-ion batteries. After an appropriate amount of conductive agent is added to the electrode, the electron transfer rate inside the electrode can be effectively improved.   Graphene has the advantages of excellent mechanics, optical properties, high thermal conductivity, small resistivity and strong stability. As a new type of lithium battery conductive agent, due to its unique sheet structure (two-dimensional structure), the contact with the active material is a point-surface contact form, which can maximize the role of the conductive agent and reduce the amount of conductive agent, so that more active materials can be used and the capacity of the lithium battery can be improved.   Conductive mechanism  (1) The electronic conductivity is high, and the use of a small amount of graphene can effectively reduce the ohmic polarization inside the battery; (2) The two-dimensional sheet structure, graphene can achieve "surface-point" contact with the active material, and can build a conductive network in the pole piece from a larger spatial span. Realize "long-range conductivity" on the entire electrode ;(3) Ultra-thin characteristics, all carbon atoms on graphene can be exposed for electron transport, high atom utilization efficiency, so it can form a complete conductive network with minimal usage. Improve the energy density of the battery;(4) high flexibility, can be in good contact with the active material, buffer the volume expansion and contraction of the active material during charge and discharge, inhibit the rebound effect of the pole piece, and ensure the good cycle performance of the battery.    The effect as a conductive agent is closely related to the amount of it added. In the case of small addition, graphene is much better than conductive carbon black because it can better form a conductive network. However, graphene with a thicker layer will hinder the diffusion of lithium ions and reduce the ionic conductivity of the electrode (6-9 layers are generally considered to be the most suitable). However, due to its high cost, difficulty in dispersion and hindering lithium ion transmission, it has not been fully industrialized.   Production process  Graphene production process methods mainly include mechanical peeling method, chemical liquid phase stripping method, redox method, chemical vapor deposition method, etc., liquid phase stripping method and redox method have low cost and low purity, suitable for batteries, supercapacitors, conductive coatings and conductive inks.   In the latest research progre...

Due to its unique advantages such as high theoretical capacity (4200mAh/g) and abundant resources, silicon (Si) anode material is expected to replace the currently widely used graphite anode and become the main anode material¹⁻² for next-generation lithium-ion batteries. At present, silicon-based anodes that are most likely to be commercialized on a large scale are silicon-carbon anodes and silicon-oxygen anodes. Although both have high specific capacities, due to the alloying and deintercalation mechanism of silicon, the structural expansion brought about by them is also very significant. Larger structural expansion will destroy the original solid electrolyte interface film (Solid Electrolyte Interface, SEI) on the surface of the silicon material, which will lead to the continuous destruction and regeneration of the SEI film during cycle charge and discharge, and consume a large amount of electrolyte, which will eventually lead to a decrease in battery capacity. fast decay². Therefore, to evaluate the performance of a silicon material, in addition to its gram capacity, first effect, and cycle efficiency, it is also very important to evaluate its expansion performance. The existing expansion evaluation methods need to prepare silicon anode materials into soft packs or laminated cells, and then monitor the in-situ expansion through force-applying structures and high-precision sensors. However, the preparation from powder materials to finished cells requires not only Mature cell production lines, and the evaluation cycle is also very long, so how to quickly evaluate the expansion performance of a silicon material has become a thorny issue that plagues many material developers.In addition, this device is also compatible with the conventional expansion test of small-sized soft packs & laminated cells (100*100mm), which truly achieves a multi-purpose machine! The four-channel silicon-based anode expansion in-situ fast screening system(as shown in Figure)draws on the assembly mode of the button battery and successfully realizes the direct measurement of the expansion performance of the silicon anode at the electrode end, and saves the need to prepare the finished battery. The manpower, material and time costs required for the core, accurately evaluate the most important performance indicators of silicon anode materials with the smallest consumption and the fastest efficiency, making your research and development one step faster! Email : tob.amy@tobmachine.com Skype : amywangbest86 Whatsapp/Phone number : +86 181 2071 5609

The performance of lithium-ion battery separator determines the capacity, cycle performance, charge and discharge current density and other key characteristics of lithium-ion batteries, requiring the separator to have the appropriate thickness, ion transmission rate, pore size and porosity and sufficient chemical stability, thermal stability and mechanical stability. At present, the main market application separator for PP, PE, PP/PE/PP and so on. (1) the same wet process, the thickness of the same separator porosity and air permeability value is negatively correlated, the linear fit of 0.9998; porosity, curvature similar diaphragm thickness and air permeability value is positively correlated, the linear fit of 0.9545. (2) The greater the porosity of the wet diaphragm of the same thickness, the smaller the ACR/DCR of the battery; the greater the thickness of the wet diaphragm with similar porosity and curvature, the greater the ACR/DCR of the battery. Dry diaphragm battery ACR/DCR is smaller than the wet diaphragm at the same thickness. (3) wet diaphragm with increased porosity (thickness of the same), the battery's room temperature voltage drop and high temperature physical self-discharge are becoming larger; wet diaphragm with increased thickness (porosity, curvature similar), the battery's room temperature voltage drop and high temperature physical self-discharge are becoming smaller. Dry diaphragm battery room temperature voltage drop and high temperature physical self-discharge are slightly greater than the same thickness of wet diaphragm. (4) -20 ℃ discharge, the same thickness of wet diaphragm porosity is larger, the smaller the capacity retention rate; while porosity, curvature is similar, the thicker the wet diaphragm capacity retention rate. Under the same thickness, the capacity retention rate of dry diaphragm is slightly smaller than that of wet diaphragm. #Glass Fiber Battery Separator for Sodium Ion Battery# For more information, please contact us: Email : tob.amy@tobmachine.com Skype : amywangbest86 Whatsapp/Phone number : +86 181 2071 5609

At the recent 2022 earnings presentation, global power battery leader CATL’s Chairman and General Manager Zeng Yuqun said that CATL's M3P battery is expected to be delivered in mass production this year. Zeng Yuqun said, "In the case of large-scale applications, M3P battery can reduce costs and increase efficiency, low-temperature performance, energy density better than lithium iron phosphate batteries, and cost better than ternary Li-ion batteries. Please see the subsequent release for the application on specific models. In an investor research event in February last year, CATL said for the first time that it planned to launch a new product M3P battery, but this product is not lithium manganese iron phosphate battery to be exact, the battery cathode material also contains other metal elements, which the company calls ternary lithium battery of phosphate system. Last August,CATL chief scientist Wu Kai, who attended the 2022 World Power Battery Conference last year, further explained, "M3P battery can be aimed at mid-range models with a range of about 700km. Previously for models with this range,CATL used medium and low nickel ternary cathode material solutions, which are relatively more costly. Combined with the 'Kirin battery' pack structure, M3P's new material can also meet the needs of such models." Wu Kai said. In an investor research event in February last year,CATL said for the first time that it planned to launch a new product M3P battery, but this product is not lithium manganese iron phosphate battery to be exact, the battery cathode material also contains other metal elements, which the company calls ternary lithium battery of phosphate system. Last August,CATL chief scientist Wu Kai, who attended the 2022 World Power Battery Conference last year, further explained, "M3P battery can be aimed at mid-range models with a range of about 700km. Previously for models with this range,CATL used medium and low nickel ternary cathode material solutions, which are relatively more costly. Combined with the 'Kirin battery' pack structure, M3P's new material can also meet the needs of such models." Wu Kai said. Shenyang Securities research report analysis,CATL M3P battery may be doped with two of the metal elements such as magnesium, zinc, aluminum, etc., in part of the iron element point to form a replacement, thereby generating phosphate system of ternary materials to improve the charge and discharge capacity and cycle stability. For more information, please contact us: Email : tob.amy@tobmachine.com Skype : amywangbest86 Whatsapp/Phone number : +86 181 2071 5609

According to the latest released data, sodium battery production capacity is only 2GWh by the end of 2022, and by the end of 2023, sodium battery production capacity is expected to increase to 21GWh, 950% year-on-year increase. 2023 is the first year of large-scale sodium-ion batteries, a number of listed companies cut into the sodium-ion battery track, CATL recently revealed that this year's sodium-ion battery will be industrialized.Sodium batteries have a good cost advantage, and the total cost of sodium batteries is 30-40% lower than that of lithium batteries. The White Paper on the Development of China's Sodium-Ion Battery Industry (2023) predicts that the actual shipment of sodium-ion batteries will reach 347.0GWh by 2030. The capacity of the hard carbon anode is related to the energy density of sodium-ion batteries, which is the biggest difficulty in the current industrialization of hard carbon. Anode material hard carbon manufacturers have successfully developed high-capacity, high-first-effect hard carbon materials and taken the lead in industrialization. For more information, please contact us: Email : tob.amy@tobmachine.com Skype : amywangbest86 Whatsapp/Phone number : +86 181 2071 5609