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Recently we are customizing an extrusion coating machine for a customer for the cylindrical battery production line. The equipment will be completed soon and sent to the customer's factory. The key technology of high-speed, high-precision intelligent lithium battery coating machine mainly includes extrusion coating, fast drying, tension correction and real-time film thickness monitoring feedback closed-loop control. Optimization of extrusion coating die parameters through finite element simulation, using suspension drying technology and aerodynamic design technology to achieve rapid drying, tension correction adopts fully closed loop tension control and fully automatic EPC real-time correction. Comprehensive use of motion control, servo drive, sensors, computer technology and other disciplines and technologies, Realize the multi-functional composite integrated structure of unwinding, deviation correction, tension control, slurry conveying, coating, drying, winding, etc. TOB NEW ENERGY LIMITED is specialized in lithium battery industry, our company can provide you a turnkey project, if you are interested in it, feel free to contact us! Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007

Today, one semi-automatic battery stacking machine will be sent to our customer, this battery stacking machine will be used for laboratory polymer lithium battery research. The stacking machine is generally composed of ten mechanisms, namely: feeding mechanism, positive electrodes box, negative electrodes box, positive secondary positioning mechanism, negative secondary positioning mechanism, positive electrodes feeding mechanism, negative electrodes feeding mechanism, laminating platform, paste glue mechanism, discharging mechanism. The working principle of the semi-automatic battery stacking machine is to load the positive and negative sheets into the material box, and the manipulator moves left and right to pick up the electrodes in the positive and negative material boxes. After the second positioning, the positive and negative plates are alternately placed on the lamination table . The separator unwinds actively, and the lamination table drives the separator to reciprocate left and right to form a Z-shaped stack. After the lamination is completed, it is cut according to the set length, the battery core is automatically sent out, and the glue is manually applied. By the way, we also have full automatic stacking machine or manual stacking machine, if you are interested in it, feel free to contact me. Thank you for reading! Contact person:Gavin Zhu (Engineer & Sales) Email : tob.gavin@tobmachine.com Skype : tob.gavin@tobmachine.com Wechat : TOB-007

The vacuum drying is to put the materials to be dried in an enclosed space, use vacuum equipment to reduce the air pressure in the enclosed space to an atmospheric pressure, and at the same time continuously heat the materials. In this way, the water molecules in the material gradually diffuse to the surface of the material due to the effects of pressure difference and concentration difference. After obtaining sufficient kinetic energy on the surface of the material, the binding of the intermolecular attraction is gradually overcome, and it escapes into the vacuum chamber of low pressure and then passes The vacuum pump is discharged into the atmosphere. Vacuum drying processes: The first is the heat transfer process, the material absorbs heat through the heat source, heats up and vaporizes the internal moisture; Secondly, in the process of liquid mass transfer inside the material, the water inside the material moves to the surface in the form of liquid, and then vaporizes on the surface; Finally, during the gaseous mass transfer process of the moisture on the surface of the material, the water vapor vaporized on the surface of the material gradually escapes into the inside of the vacuum chamber and flows to the outside through the vacuum chamber. To complete the above heat and mass transfer process, temperature, pressure and concentration are the key control factors; Temperature: The temperature of the heat source should be significantly greater than the temperature of the material to meet the energy required for its own temperature increase and vaporization of moisture. The higher the temperature, the faster the drying. Concentration: The so-called concentration refers to the concentration of moisture in the material. The internal concentration of the material is higher than the surface concentration of the material. Under the action of capillary force and concentration difference, it migrates to the surface and eventually reduces the concentration of moisture. Pressure: The steam pressure on the surface of the material is higher than the partial pressure of steam in the drying oven, which is the core theory of vacuum drying. Vacuum drying thermodynamics mainly studies the relationship between the vaporization temperature of water, the saturated vapor pressure and the degree of vacuum. The theoretical basis can be Clapron. Clausius formula expression The vaporization temperature of water is positively correlated with saturated vapor pressure and negatively correlated with vacuum degree. The smaller the saturated vapor pressure, the lower the vaporization temperature of water. Similarly, the greater the vacuum degree, the lower the vaporization temperature of water. Therefore, it can be seen that water is easier to achieve low-temperature vaporization in a vacuum environment. When the temperature is maintained at a certain value, increasing the vacuum in the drying chamber can convert more moisture on the surface of the material into water v...

As a key part in the manufacturing process of lithium batteries, the welding process is applied to the connection of multiple positions of lithium battery aluminum/copper anode and cathode current collectors, electrodes, and battery packaging. Any welding joint defects will significantly affect the performance of lithium batteries. consistency. Therefore, it is necessary to understand the ultrasonic welding process. The principle of ultrasonic welding In the ultrasonic welding process, the transducer converts high-frequency electrical signals into ultrasonic vibration signals. High-frequency vibration is transmitted to the surface of the metal to be welded through the welding tool head. The interface metal oxide film is broken under a certain pressure and the intense friction of ultrasonic vibration, clean interface metal contacts and under the combined action of friction and ultrasonic softening, further plastic flow and diffusion will gradually increase the connection area and eventually form a reliable connection. Effect of welding pressure on welding The strength of the welded joint increases with pressure and then decreases. Welding pressure will change the sliding resistance of the welding interface. A small welding pressure will cause a small sliding resistance of the interface, so that the energy generated by the friction is not enough to form an effective connection at the interface; too much welding pressure causes the tool head to be pressed down too deep, welding the interface Metals bite each other, which affects the relative motion of the interface, hinders the further connection of the interface metals, and results in poor mechanical properties of the welded joint. Therefore, proper welding pressure parameters are decisive for welding quality. Effect of time on welding The welding time directly affects the energy input during the welding process and has a direct effect on the welding effect. The welding time is too short and the input energy is insufficient. It is difficult to form an effective solder joint due to insufficient friction; as the welding time increases, the temperature increases due to mutual friction, the workpiece material begins to soften, and the oxide film at the interface of the welding area is damaged and plastically deformed , Can form a better connection; when the welding time is further extended, the welding head is easy to form deep marks on the surface of the workpiece, which will adversely affect the welding effect. In addition, too long welding time will easily cause the welding head and the workpiece to be welded Bonding Effect of amplitude on welding In the ultrasonic welding process, the vibration system formed by the workpiece and the workpiece directly affects the instantaneous velocity of the vibration at the interface of the workpiece, which ultimately affects the friction heat generation and plastic deformation, which affects the welding quality. Contacts: Miss carol(Sales&Engineer) E-mail:to...

Today, one set TOB-DZF-6050-HT high temperature vacuum oven has been sent to our USA customer. Applicable scope of high temperature oven: For laboratories and production sites of scientific research units, professional colleges, industrial and mining enterprises and other units, and drying and heat-treating items under vacuum. Heating and drying items under vacuum has the following advantages; ⑴The drying temperature can be reduced. ⑵ Avoid oxidation of some items when heated. ⑶ Avoid heating air to kill biological cells. ⑷No dust damage By the way, we also can supply full set lithium battery equipment and battery materials for lithium battery research or production, if you have any needs, feel free to contact us. Thank you for reading! Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007

Dear TOB New Energy Customers, We are proud to announce that we have just moved to a new office location on 24 June, 2020 to accommodate our growth. Our new office address is: Room 111, Building 5th, NO.1633, Jicheng Road, Tong'an torch Industry Phase II, Tong'an District, Xiamen City, Fujian Province, China, 361100 Our office number will remain the same as +86-592-7311160 / +86-18120715609. Our new and larger office space allows us to add more functions to serve our customers better. Should you have any questions on the relocation, please feel free to contact us. TOB New Energy is a company that provide total equipment and materials of lithium battery from electrode preparation to battery assembly, and more important, we also provide corresponding lithium battery technology service to our customer, we can provide a turn key battery project.

Today after a whole day hard work,we finally finished the five containers equipment for pouch cell pilot line to Russia. Good weather and good project. Pouch cell electrode making is same as other model electrode,it is mainly different at the assembly.From electrode stacking to sealing. Stacking After the production of the electrode, it is transferred to the stacking. The stacking means that the cathode, the separator, and the anode are stacked layer by layer to make a jolly roll. There are two main stacking methods, winding and zigzag stacking. Aluminum laminated film forming Punching, punching is a forming process for Aluminum laminated film. After feeding the aluminum-plastic film, the aluminum-plastic film is deformed through the punching die, and there is a pocket for us to store the core. Pre-sealing There are a total of four packages. The pre-package we mean refers to the top and side seals, leaving a seal to facilitate electrolyte injection. After placing the core in the pit, the entire aluminum-plastic film can be placed in the jig for top sealing and side sealing in the top side sealing machine. When encapsulating, the two heads have a certain temperature (generally around 180 ℃), and when pressed, they are pressed on the aluminum plastic film, and the PP layer of the aluminum plastic film melts and then sticks together. Second-sealing During the second seal, the air bag is punctured by a guillotine and a vacuum is drawn at the same time, so that the gas in the air bag and a small part of the electrolyte will be drawn out. Immediately afterwards, the two sealing heads are encapsulated in the second sealing area to ensure the airtightness of the cell. Finally, cut off the airbags after the packaged cells. After the second airbags are cut, you need to trim and fold the edges. That is, cut the one edge and the second edge to a suitable width, and then fold it to ensure the battery core. The width does not exceed the standard, such a soft-packed battery core is basically formed. We, TOB New Energy ,we are not only provide the battery equipment , but also provide the battery technology. Contacts: Miss carol(Sales&Engineer) E-mail:tob.mae@tobmachine.com Skype:583432443@qq.com Wechat:TOB-005

TOB New Eenergy is a professional manufacturer of lithium-ion battery equipment and battery materials, and we can also provide lithium-ion battery technology. Many enterprises, universities, and scientific research institutes have set up a button battery test line for the study of materials. The button battery test line equipment has low cost and simple operation, which is very helpful for beginners to enter the lithium battery industry. By the way, we also can supply full set equipment and materials for cylindrical cell or pouch cell, if you are interested in lithium battery industry, feel free to contact us. Thank you for reading! Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007