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The manufacture of lithium-ion batteries is a process in which the process steps are closely linked. Overall, the production of lithium batteries includes the manufacturing process of the electrode, the battery assembly process, and the final electrolyte injection, battery case sealing, battery formation, and aging processes. In the three-stage process, each process can be divided into several key processes, each step will have a great impact on the final performance of the battery. The concept of formation is to charge and discharge a small current to the manufactured lithium ion battery. After the lithium battery is manufactured, it is necessary to charge and discharge the battery with a small current. there are mainly two purpose of pre-charging. After the battery is fabricated, the electrode material is not in the best applicable state, or the physical properties are not suitable (such as too large particles, the contact is not close, etc.), or the phase itself is wrong (such as some metal oxide anodes with alloy mechanism), requires first charge and discharge to activate. During the first charge of the lithium battery, Li + is released from the cathode active material, passes through the electrolyte-separator-electrolyte, and is inserted between the layers of the anode graphite material. 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

18650 lithium-ion battery is one of the most common lithium-ion batteries on the market today. Cylindrical batteries commonly used in battery PACK, that is, people often say 18650, 21700, 32650 and other specifications batteries. The 18650 lithium ion battery pack process is mainly based on the PACK battery structure. Most of the 18650 lithium battery pack process features are similar. TOB New Energy can supply the automatic 18650 battery pack double side spot welding machine for 18650,26650,32650 cylinder battery pack automatic spot welding, it can weld both side together with high speed and good effect. What should be paid attention to when welding 18650 lithium ion battery pack process? 1. Pay attention to the spot welding current when welding 18650 lithium ion battery. 2. Pay attention to the diameter of the welding pin when welding 18650 lithium ion battery. 3. When welding 18650 lithium-ion batteries, pay attention to the distance between the welding pins. 4. When welding 18650 lithium-ion battery pack process, pay attention to the number of welding points. 5. Can not explode fire, short circuit, or virtual welding during spot welding. Multi-parallel multi-series 18650 lithium ion battery pack design process skills 1. Adopt the principle of priority and easy operation, that is, employees are easy to operate. 2. Adopt the principle of priority operation safety, that is, employees are not easy to short-circuit or have better preventive measures during operation. 3. Adopt the principle of equipment, that is, use auxiliary equipment to complete as little as possible, and at least semi-automatic. 4. The packaging design should be reasonable, easy to take and put, and don't take the product out to the customer for a long time. There are many reasons for the inconsistency of the 18650 lithium-ion battery before PACK. The materials constituting the battery are not completely consistent, and the process of manufacturing the battery cannot be controlled to the same degree in every detail. This will lead to inconsistent capacity, inconsistent terminal voltage, inconsistent internal resistance, inconsistent life, etc. In addition to the electrical performance to be screened, the appearance of the 18650 lithium-ion battery should also be tested. For example, measuring defects such as scratches, breakages, stains, pits, bumps on the surface of the battery will affect the assembly of the battery module and the safety characteristics of the pack. 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

Polymer batteries are also called lithium polymer batteries (Li-polymer), also known as polymer lithium batteries. It is also a kind of lithium ion battery, but it has many obvious advantages compared with liquid lithium battery (Li-ion), such as high energy density, more compact, ultra-thin, lightweight, and high safety. A new type of battery. In shape, the lithium polymer battery has ultra-thin characteristics, and can be made into batteries of any shape and capacity to meet the needs of various products. The minimum thickness of this type of battery can reach 0.5mm. Its nominal voltage is the same as Li-ion's nominal voltage of 3.7V, with no memory effect. A few months ago, customers came to our company to discuss the details with our engineers. They compared with some suppliers and finally chose to cooperate with our company. All equipment of the polymer pilot line is ready today, and they will be sent to our Russian customers soon. If you are interested in lithium ion battery indsutry, feel free to contact me, our company can supply full set of equipment and materials for lab line or production line. We can provide "one-stop" solution and a "Turn key" project for you. Thank you for reading! Contact person:Gavin Zhu (Engineer & Sales) Email:tob.gavin@tobmachine.com Skype: tob.gavin@tobmachine.com Wechat: TOB-007

After getting feedback from some customers,Our engineers have made corresponding improvements to our cylindrical battery grooving machine. Now,our cylinder battery grooving machine newly added touch screen function, and you can set each parameter more convenient and intuitive. You can clear know the grooving depth(D-D1 at the follow picture) for your battery case instead of adjust the cylinder process,which can have higher accuracy and have better effect.In addition,we will add the tick for adjust the grooving height(B),more easy to operate.And can save the case used to debug the machine. And this machine still keep the advantages of the old model The metal waterproof button is used to resist moisture and electrolyte corrosion. *The speed controller uses digital display to accurately adjust and display the current speed. *Adjustable roll groove size, high precision and stable size. *It can process various kinds of cylindrical batteries.You can grooving many different types of cylinder case and just need change the mould.And this grooving machine can also grooving the super capacitor aluminum case. 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

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