The spot welding machine adopts the principle of double-sided double-point overcurrent welding. When working, the two electrodes press the workpiece to make the two layers of metal form a certain contact resistance under the pressure of the two electrodes, and the welding current flows from one electrode to the other At the moment, the instantaneous thermal welding is formed at the two contact resistance points, and the welding current instantaneously flows from the other electrode along the two workpieces to this electrode to form a loop, and does not hurt the internal structure of the workpiece being welded. Scope of application: power battery 18650/26650/21700 battery cell serial-parallel combination, multi-parallel multi-string combination, power tool battery, twist car battery (1 mold spot welding 6 groups), energy storage battery pack, 18650 battery pack, 26650 battery pack, 32650 battery pack, electric bicycle battery, solar street light battery pack, ternary lithium battery, digital lithium battery, lithium iron phosphate battery, etc. Today, the custom double sides automatic welding machine has been shipped to our USA customer, used for welding large battery packs, this is the second time they purchased a spot welding machine from our company, we will provide you with reliable equipment and excellent after-sales service. We also can provide a automatic battery pack solution, if you are intersted 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

In order to improve the consistency of the density and thickness of the surface material of the battery electrode, the anode and cathode electrode must be rolled after the battery coating process. This process is called the battery rolling pressing of the battery electrode. The purpose of electrode roll pressing is as follows: 1)Ensure that the surface of the electrode is smooth,and prevent burrs on the coating surface from puncturing the separator to cause short circuit. 2)Compact the coating material of the electrode and reduce the volume of the electrode to increase the energy density of the battery; 3)Make the active material and conductive agent particles contact more closely and improve the electronic conductivity; 4)Strengthen the bonding strength of the coating material and the current collector, reduce the occurrence of powder falling in the battery electrode during the cycle, and improve the cycle life and safety performance of the battery. There are many influencing factors in the production process of lithium-ion batteries. After solving the process problems that may occur in each process, it will directly reduce the waste of production materials and improve the quality and efficiency of subsequent assembly, injection, packaging and other processes. Improve the quality and consistency of the final product, reduce production costs, and then make lithium-ion battery products more competitive in the market. We are TOB New Energy, 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

The battery-specific vacuum oven is a vacuum oven specially designed for the baking process of lithium ion batteries. Due to the particularity of the oven materials, the lithium battery special oven needs to be resistant to strong acid and alkali corrosion, accurate temperature control, efficient program control, stability and safety. Due to the strict control of the moisture content inside the lithium battery, moisture has a great influence on the performance of the lithium battery, including voltage, internal resistance, self-discharge and other indicators. If the moisture content is too high, the product will be scrapped, the quality will be reduced, and even the product will explode. Therefore, in multiple production processes of lithium batteries, the positive and negative electrodes, battery cells core and batteries must be vacuum-baked multiple times to remove as much water as possible. The most widely used in the lithium battery industry are three-layer vacuum oven, single-layer vacuum oven, folio vacuum oven, four-door round warehouse vacuum oven, etc. The three-layer vacuum oven is the most widely used, can be used to bake electrodes after cutting, batteries and batteries before injection. Thank you for reading! Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007

1. Assembly process The assembly process of the cylindrical cell lithium battery pack is actually a litter similar to the engine assembly process of traditional fuel cars. The five systems are connected together by bolts, nuts, cable ties, clamps, wire harness throwing nails and other connectors to form an assembly. 2. Air tightness detection process The air tightness test in the manufacturing process of the power soft pack lithium battery PACK is divided into two links: the thermal management system level air tightness test; the pack level air tightness test. 3. Software flashing process Software flashing is also called software burning, or software filling. The software flashing process is to flash the BMS control strategy into the CMU and BMU of the BMS in the form of code. During the test and use of the lithium battery pack, the battery status information data collected will be processed and analyzed by the electronic control unit. Then, according to the analysis results, it issues control commands to the relevant functional modules in the system, and finally transmits information to the outside world. 4. Electrical performance testing process Features of EV pouch cell pack: ① Lithium battery pack requires a high degree of consistency (capacity, internal resistance, voltage, discharge curve, life) ② The cycle life of the lithium battery pack is lower than that of a single battery. ③ Use under limited conditions (including charging, discharging current, charging method, temperature, etc.) ④ The voltage and capacity of the battery have been greatly improved after the lithium battery is formed, and it must be protected to perform charge balancing, temperature, voltage and over-current monitoring. Contacts: Miss carol(Sales&Engineer) E-mail:tob.mae@tobmachine.com Skype:583432443@qq.com Wechat:TOB-005

Last year, TOB New Energy signed a contract for a cylindrical battery production line with a factory, after communication and planning of the project by both parties, the equipment is currently being prepared in an order, many devices have entered the assembly stage. Battery and Materials Baking oven 200L Vacuum planetary mixer High precision lithium battery electrode rolling machine 18650 Cells Assembly Line Automatic Electrolyte Filling System Battery Safety Testing Equipment Battery capacity, cycle, performance tester Formation and grading machine Nitrogen making machine All equipment is expected to be delivered in June. After the equipment arrives at the customer's factory, our team of engineers will go to the customer's factory to help the installation and commissioning of the equipment, and conduct pre-job training, the project will run soon! Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007

According to the case of the battery, the lithium-ion batteries on the market are mainly divided into:cylindric lithium-ion battery, pouch cell,aluminum shell battery and coin cell. The first three are mainstream finished batteries on the market,and the coin cell case  is mainly used for materials research.The coin cell case is mainly made by stainless steel 304 and stainless steel 316.(Abbreviated as SS304 and SS316),SS316 contains more alloying elements than SS304, so the corrosion resistance of SS316 is better than SS304.So SS316 coin cell case will be a little more expensive than SS304. According the model of the coin cell case,it can divided to:CR2016, CR2025, CR2032, CR1620, CR1632, CR2325 etc.CR20XX are more common in the market, especially CR2032, so this type of battery case has some other processing,like aluminized coin cell case, gold-coated coin cell case and air mesh coin cell case etc. After introduce about the coin cell case,let's start talking about cylindric lithium-ion battery case,which is the is the earliest commercialization, the highest degree of production automation, and the lowest cost current power battery,and Tesla also choose the 18650 cylinder cell.The cylinder battery case is similar to coin cell case,also is made by SS316 or SS304.Most cylindrical cell steel can manufacturers use steel as the battery shell material, because the physical stability of the steel material is much higher than the aluminum shell material, and after the optimization of the design structure of each manufacturer, the safety device has been placed inside the battery core. The safety of the cylinder stainless steel battery has reached a new height. The cylinder battery case model have 14500, 18650, 21700, 26650 etc. First two number represent the diameter about the battery,and the next two number represent the height of the battery case.And 0 means the battery case is a cylinder.Like 18650 battery case means diameter is 18mm height is 65mm cylinder battery case. Although stainless steel case have so many advantage,but stainless steel case has low weight-to-energy ratio and poor safety.So have many factory choose the battery aluminum case.And now these case always is big.And due to the higher cost of battery aluminum case mold opening, there are fewer models and higher order quantity requirements. Aluminum laminated film can be said that it is an upgraded version of the aluminum shell,lighter quality, lower mold opening cost and higher safety than aluminum case,which is another popular battery case except cylinder battery case.But the aluminum laminated film is weak against pressure and bulging easily. All model of the battery case we have provide,if you have any need of it,fill free to contact us. We are TOB NEW ENERGY, 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

As people explore about the new energy,lithium battery become an increasingly hot topic.And battery performance is most important. And the performance of the battery is determined by some parameters : Battery capacity,battery internal resistance,voltage,discharge platform time,charge and discharge ratio,self-discharge rate and cycle life etc. So,it is need a machine to help us to test and analysis about our battery---battery tester. The battery tester is essential for our battery research,and different battery need different model tester. If you are research about the coin cell,we have the test range from 5V1mA to 5V50mA coin cell tester to satisfied your requirement. And if you a research about cylindrcal battery or pouch cell,we can also provide you the tester about these battery, the follow one is a conventional tester for single cylinder battery of pouch cell 5V6A tester,and if you want test about the pouch cell,connect these clamp to the tester,and you can do it. If you are do about the battery pack testing,we also have related tester for it. And if you are a factory and have a lot of battery,we can also provide you satisfied product. We are TOB New Energy ,we are not only provide the materials 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

Lithium battery pack process design purpose: safety, quality, efficiency. Key parameters of process design: performance, size(batteries size, guard plate size, complementary makings size, finished products size) Porcess design: development phase, trial production, mass production stage. Lithium battery pack major process: 1. Battery appearance inspection 2. Stick battery surface pad 3. Batteries voltage and internal resistance testing 4. Batteries combination 5. Soldering 6. Spot welding 7. Stick insulation tape 8. PVC film heat shrink 9. Install battery plastic shell, plastic frame 10. Ultrasonic pressing 11. Spraying the code 12. Labelling 13. Performance testing 14. Finished products appearance checking 15. Packaging TOB New Energy can design the whole line according to your requirements, we can supply you manual 18650 lithium battery pack line, automatic 18650 lithium battery pack assembly line, etc. If you are interested in it, feel free to contact me. Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007