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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

The battery coating generally refers to a process of uniformly coating the slurry with uniform stirring on the current collector and drying the organic solvent in the slurry. The effect of coating has an important impact on battery capacity, internal resistance, cycle life and safety, ensuring that the electrode are evenly coated. The choice of coating method and control parameters have an important impact on the performance of lithium-ion batteries. This new design single side extrusion coating machine have 3 section oven,and the temperature of each section of the oven can be controlled individually,which can have a better drying effect.If the drying temperature is too low during coating, the electrode cannot be completely dried. If the temperature is too high, the organic solvent inside the electrode may evaporate too quickly, and the surface coating of the pole piece may crack or fall off. And this battery coating machine is adoption slot-die extrusion coating way,this coating way coating effect is good, the coating amount is flexibly controlled by the micro-adjustment of the coating blade, and the coating accuracy is high; it can be coated in a discontinuous mode, and the coating range can be adjusted freely, without the use of a baffle, it will not occur stain phenomenon caused by different edge thickness; easy to clean and disassemble; help to maintain a high level of cleanliness, the channel for the overall flow of glue can be sealed to prevent other contaminants from entering. If you are interesting of this coating machine,you can directly contact us. We are TOB, we are not only provide the equipment of the battery,but also provide the knowledge of battery. Contacts: Miss carol(Sales&Engineer) E-mail:tob.mae@tobmachine.com Skype:583432443@qq.com Wechat:TOB-005

These battery production line equipment are used for lithium coin cell and pouch cell battery laboratory research, they are ready to ship to our new Russia customer, this is a new lithium battery research laboratory established by the customer, our company not only provides them with equipment, but also provides them with lithium battery technology support, of course we also will provide them the battery materials, that is, to provide customers with turnkey services. These devices are included vacuum oven, battery coating machine, battery sealing machine, electrode punching machine, glove box, etc. TOB new energy is specialized in lithium battery industry, if you are interested in it, please feel free to contact us. Warmly welcome you to visit our company. Thank you for reading! Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007

These devices are used for lithium polymer battery laboratory research, all equipment has safely arrived at the university’s laboratory. They will conduct research on lithium battery materials in this laboratory. Today, our team of engineers has also arrived at the laboratory for equipment installation and commissioning, we will teach them how to use the equipment safely, and tell them how to maintain the equipment, etc. TOB new energy is specialized in lithium battery industry, we can supply full set of lithium battery equipment and materials for lab research or battery production line, also we can supply the lithium battery technology, if you are interested in it, please 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