I believe that everyone in the lithium battery assembly equipment industry knows that the function of the lithium battery comprehensive tester is to test the voltage, current, internal resistance and overcurrent of the lithium battery pack. This statement is still not enough for everyone to simply understand the function of the comprehensive tester. I will dig a little deeper. The comprehensive test cannot detect the capacity of the lithium battery. Why do you say this, because a set of batteries needs to simulate the usage of the battery in one day. The comprehensive tester charges and discharges very quickly, about 4 seconds and 20 seconds, so that the battery power can be tested, not the power. How much, but also test the device that protects the board. However, such a feature reminds us of the lithium battery aging machine. I want to compare this with the comprehensive tester, so that it is easier for everyone to understand the lithium battery comprehensive tester. The lithium battery aging cabinet cannot test the lithium battery pack with the lithium battery protection board, but it can measure the lithium battery capacity. . Some customers think that they can save costs by directly buying an aging cabinet without using a comprehensive tester, but after figuring out the functions of these two devices, they understand that these are two different concepts. Simply put, the lithium battery comprehensive tester cannot measure the battery capacity, but it can test the lithium battery pack with a protective plate. The lithium battery aging cabinet can test the capacity of lithium batteries, but cannot test the battery pack with a protection board, but can test the voltage and current accuracy of the lithium battery pack. ACEY provides full set of battery pack assembly machine.

    The production of lithium-ion batteries is a closely linked process of process steps. On the whole, the production of lithium batteries includes pole piece manufacturing process, battery assembly process and the final liquid injection, sealing, formation, and aging process. In the three-stage process, each process can be divided into several key processes, and each step will have a great impact on the final performance of the battery.      In the pole piece manufacturing process, it can be subdivided into five processes: slurry preparation, slurry coating, pole piece rolling, pole piece cutting, and pole piece drying. In the battery assembly process, according to the different battery specifications, it can be roughly divided into winding, casing, welding and other processes. The liquid injection process after the assembly is completed includes liquid injection and sealing. The last is the three-step process of battery formation, aging, and capacity separation. After the battery is manufactured, the battery needs to be pre-activated and stabilized for the first time, that is, the final formation-aging-volumetric process. 1. Formation      The concept of pre-formation is to charge and discharge the manufactured lithium-ion battery with a small current. After the production of the lithium battery is completed, the battery needs to be charged and discharged with a small current. Regarding the purpose of pre-charging, there are mainly two:      1. After the battery is manufactured, the electrode material is not in the best applicable state, or the physical properties are inappropriate (for example, the particles are too large, the contact is not close, etc.), or the phase itself is incorrect (for example, some metal oxide negative electrodes of alloy mechanism) ), it needs to be activated for the first time by charging and discharging.      2. During the first charge of the lithium battery, Li+ is removed from the active material of the positive electrode, and after passing through the electrolyte-diaphragm-electrolyte, it is inserted between the layers of the negative electrode graphite material. During this process, electrons migrate from the positive electrode to the negative electrode along the peripheral circuit. At this time, due to the low potential of lithium ions inserted into the graphite anode, the electrons will first react with the electrolyte to form an SEI film and some gas.      During this process, some gas will be generated and a small amount of electrolyte will be consumed. Some battery manufacturers will perform battery exhaust and refill operations after this process. Especially for LTO batteries, a large amount of gas will be generated and the battery will bulge. The thickness exceeds 10%. For the graphite negative electrode, the amount of gas produced is small, and it is not necessary to perform the operation of exhausting. This is because ...

After years of development in the lithium battery industry, from the initial AC pulse spot welding machine to energy storage spot welding machine, intermediate frequency spot welding machine, transistor-type spot welding machine, to laser spot welding machine, spot welding equipment is continuously upgraded, and spot welding The quality has also been continuously improved. But we often see all kinds of spot welding machines gathered in the same production workshop, playing their respective roles. Spot welding machines with poor performance have not been eliminated. Why? We start from various spot welding machines. To understand their performance in depth. The AC pulse spot welding machine uses the SCR controlled by the single-chip microcomputer to intercept the AC pulse voltage to the primary coil of the welding transformer, and the transformer converts the high-voltage pulse into a low-voltage large current and outputs it to the spot welding needle for discharge spot welding. Energy storage spot welding machine   controls the charging voltage of the energy storage capacitor through a single chip microcomputer, and then controls the discharge time of the capacitor to the welding transformer, so that the secondary of the welding transformer outputs the same amount of work every time to discharge the spot welding needle. Intermediate frequency welding power source   AC input current is rectified into direct current, and the direct current is converted into high frequency pulse by inverter to the primary of intermediate frequency transformer. After the transformer secondary output waveform is full-wave rectified, it outputs a stable low voltage large current to the spot welding needle to discharge the spot welding. Transistor welding power supply is the most ideal resistance welding power supply. It does not require a welding transformer, and the current rises quickly. It directly outputs the current waveform with high frequency. It can choose constant current, constant voltage or constant current and constant voltage control methods, but it also has the disadvantage of being expensive. The laser spot welder is composed of crystal, xenon lamp, condenser cavity, optical resonant cavity, cooling filter components and laser power supply. In the battery industry, the welding of steel shells and aluminum shell cover plates has been widely used. In recent years, spot welding of polymer PACK protection plates has also begun to be used. Compared with resistance welding, laser welding machine has the advantages of not needing to grind the spot welding needle, the welding is firm, the welding spot is uniform, and it is not easy to produce false welding, but it also has the disadvantages of high price and high maintenance cost. ACEY provides all kinds of battery spot welding machine.

The main function of the separator is to separate the positive and negative electrodes of the lithium battery to prevent the two poles from contacting and short-circuit. In addition, it also has the function of allowing electrolyte ions to pass through. The performance of the diaphragm determines the interface structure and internal resistance of the battery, which directly affects the battery's capacity, cycle, and safety performance. Traditional polyethylene (PE) and polypropylene (PP) organic separators, in actual use, will have problems of low melting point and insufficient mechanical strength, and will easily cause battery short circuit under extreme conditions. Due to the advantages of inorganic ceramic materials such as high melting point, good chemical stability, and good affinity with electrolyte, composite diaphragms improved by ceramic coating (organic materials as the base film and ceramic particles as the coating material) have attracted attention. Ceramic-coated special diaphragm: PP, PE or multilayer composite diaphragm is used as the substrate, and the surface is coated with a layer of nano-aluminum oxide material. After a special process, it adheres tightly to the substrate. Significantly improve the high temperature resistance and safety of lithium-ion batteries. The ceramic-coated special diaphragm is particularly suitable for power batteries. Ceramic-coated lithium battery separator improves battery safety Ceramic-coated lithium battery separators will have a wide range of applications. It is an important means to solve the safety problems of lithium batteries, and it is also a direction for the development of lithium battery separators in the future. Solving the safety problem of lithium batteries has become the main development direction of the future separator, and the coated separator is a main choice to meet the safety requirements of lithium batteries. After ceramic coating, the diaphragm basically covers 8%-10% of the pores and can withstand high temperatures of 240°C. Through the puncture test done by the customer, the safety of the ceramic diaphragm is indeed much better than that of the ordinary diaphragm used on the lithium battery. Ceramic diaphragm is to coat nano-scale ceramic particles on the diaphragm. Its function is mainly to improve the heat-resistant shrinkage of the diaphragm and prevent the diaphragm from shrinking and causing a large-area short circuit. In addition, the low thermal conductivity of ceramics prevents some thermal runaway points in the lithium battery from expanding and forming an overall thermal runaway. Generally, it can withstand high temperatures around 200°C. Characteristics of ceramic-coated lithium battery separators 1. Thermal stability The morphology of the diaphragm itself will not change when it is baked at 150°C, and it can effectively prevent internal short circuits and improve safety performance. 2. Endurance As the number of charging cycles increases, the capacity retention r...

Lithium battery sorting machine is a sorting equipment for testing the internal resistance and voltage of cylindrical batteries. This equipment can accurately sort the batteries to the corresponding gear according to the set internal resistance and voltage value. Sorting of good and bad products in different gears. There are some matters needing attention in the operation of the lithium battery sorting machine and also need to be clear. In order to facilitate everyone's understanding of the operation and operation of the cylindrical lithium battery sorting machine, the editor has collected and sorted out some precautions for everyone to compare and understand. 1. When starting up, first check whether the actuators of the equipment are in the initial position, confirm that there is no other sundries on the equipment, and then turn on the air source, confirm that the air source pressure is 0.5～0.6Mpa, and then turn on the power to run the control program. : 2. Turn off the power and air source when the equipment is out of service after get off work: 3. Turn off the power and air source when repairing, maintaining and maintaining the equipment: 4. When loading the batteries to be sorted into the loading box, try to ensure that the positive and negative directions of all batteries are the same: When the batteries in the receiving box are about to be full, remove the batteries in time: 5. When the machine is running, don't put your hands in the battery sorting track to avoid pinching your fingers: 6. When the equipment is running abnormally or stopped for no reason, press the emergency stop button first, and then check the abnormal condition of the equipment. After troubleshooting, release the emergency stop button to make the manipulator return to the origin and the system is in a pause state. Press the start green button to make the system resume automatic operation, If the system can't run, you can press the system reset button to restore normal working status. 7. When the sorting of a certain type of battery is complete and there is no material alarm, you can press and hold the green button for 3 seconds to empty the material, or wait for 30 seconds, the system will automatically enter the finishing mode and automatically sort the remaining materials to the trough. After sorting, the equipment will be out of condition, please load it. 8. Before each operation of the equipment, the battery on the sorting manipulator should be emptied, press the system reset button to make the equipment enter the initial state, and then press the run button: 9. It is necessary to ensure that the positive and negative electrodes of the batteries to be sorted are clean, and at the same time, avoid dust and other debris from polluting the detection probe to ensure the accuracy of the measurement data: 10. In order to ensure the measurement accuracy, it is recommended to clean the probe with alcohol every 4 hours under normal production conditions and replace the p...

Planetary vacuum mixer is a combination of dispersion and mixing, which is suitable for polymer lithium ion battery liquid and liquid lithium battery liquid, electronic battery slurry, adhesive, mold glue, carbon ketone sealant, polyurethane sealant, and The mixing, reaction, dispersion, dissolution, homogenization, emulsification and other processes of liquid and liquid, solid and liquid materials in the oxygen glue, paint, ink, pigment, cosmetics, pharmaceutical, pesticide, and building materials industries. Its mainly composed of a mixing bucket, a mixing cover, a mixing power head (including two sets of low-speed mixing paddles, two sets of high-speed dispersers and a set of wall scraping paddles), temperature control devices, lifting devices, barrel lock devices and control systems. The mixing head of the mixer is a five-axis planetary mixing, which is composed of two sets of low-speed stirring paddles, two sets of high-speed dispersers, a set of wall scraping paddles and a set of temperature control devices installed in a planetary box. The stirring paddle and the disperser revolve around the mixing barrel while also rotating independently. The stirring and dispersing power is driven by different motors, which can realize independent stepless speed regulation. The main transmission mechanism is a tower-shaped bearing seat, which is divided into three layers of dynamic seals, all using hard alloy mechanical seals, and other static seals are sealed with silicon rubber seals. Vacuum mixer is a kind of mixing equipment, it mainly exists for mixing some substances. Before using the vacuum mixer, we need to maintain it in time to avoid problems when using it. When using, regularly replace the sealing parts, because the main function of the sealing parts is to prevent the material from penetrating into the connection parts of the equipment or other spaces, which will affect the electrical and efficiency; then the regular inspection and replacement of the sealing parts can be more effective. Good to ensure the sealing effect.  In addition, it is necessary to do a good job of removing water, because water vapor will cause rust and blackening of the equipment, but we need to ensure a dry equipment environment to reduce the erosion of water vapor on the vacuum mixer.

At present, the packaging forms of lithium batteries on the market are mainly divided into square packaging, cylindrical packaging and aluminum-plastic film packaging. The square package and cylindrical package are mainly made of metal shells, including aluminum shells and steel shells. Aluminum-plastic film packaging is mainly used in the packaging of pouch cell lithium-ion batteries. Pouch cell encapsulated in aluminum-plastic film are mainly used in the 3C field, and have gradually penetrated into the new energy automobile industry in recent years, providing safe and stable power output for various types of automobiles. 1. Introduction to Aluminum Plastic Film The packaging material used for pouch cell is aluminum-plastic composite film, referred to as aluminum-plastic film. The design and manufacturing technology requirements of aluminum-plastic film are relatively high. The thickness of aluminum-plastic film has different specifications. Its structure is mainly composed of three kinds of materials, which are CPP layer, Al layer and nylon layer from the inside to the outside. Before encapsulating the bare cell, the aluminum-plastic film should be punched. We can provide pouch cell case forming machine to punched the aluminum-plastic film. After the aluminum-plastic film is punched to the required specifications, the cell is packaged. The inner material of the punching pit is a cast polypropylene film (CPP), which has a certain melting point, and the CPP layer materials on both sides of the encapsulation are relatively melted and bonded together under a certain temperature and pressure during packaging. The CPP layer material has good heat-seal adhesion with metal Ni, Al and tab glue, and has good electrolyte resistance and HF resistance. At the same time, the CPP layer also has good insulation and physical protection properties, which can effectively prevent The short-circuit between the electrode and the lithium-ion battery soft package material causes corrosion of the aluminum-plastic film. 2. Discussion on influencing factors of heat sealing First of all, it is necessary to understand that the purpose of aluminum-plastic film heat sealing is to isolate the cell from the external environment, that is, all poor packaging that may affect external moisture, air infiltration, and electrolyte leakage should not occur. The packaging of soft-packed cells is mainly divided into top-side sealing and final sealing processes. The top-sealing process is mainly the direct packaging of aluminum-plastic film, tab glue and copper-nickel tabs, which has a greater possibility of damage. The side seal is the encapsulation between the aluminum-plastic film CPP layer, there are not too many problems, mainly to prevent the appearance of wrinkles and bubbles. The final seal is a vacuum package. As the lithium battery is pre-charged, gas will be generated, and the electrolyte will easily stick to the PP layer of the aluminum plastic film, resulting in poor packagi...

As we all know, different planetary mixers will have different movements during the working process, which are closely related to the intention of the mixing operation. Vacuum planetary mixer is a multifunctional planetary mixer with 3 sets of multi-layer blades or other mixing blades inside, also called vacuum mixer. The working principle of the laboratory planetary mixer is: when the planet carrier rotates, it drives the three stirring and dispersing shafts in the box to revolve around the axis of the barrel to rotate at a high speed, so that the material is subjected to violent shearing and kneading effects. Planetary mixer is a new type of high-efficiency non-dead-point mixing and mixing equipment. It has a common and novel mixing method. There are two or three multi-layer blade agitators and 1 to 2 active scrapers in the kettle. The agitator is around the kettle body. When the axis revolves together, it rotates at a high speed around its own axis at different speeds, so that the materials move in disorder in the kettle body. Various mixing process requirements are completed by operating different mixing devices. In the selection and selection, according to the intention and requirements of the process mixing operation, confirm the type of planetary mixer, motor power and mixing speed, and then select the reducer, rack, mixing shaft, shaft seal and other parts. Some movements are very small, like buzzing noises, and some are very loud, and can be clearly heard from a distance in a large factory. So does the magnitude of movement mean the mass of the planetary mixer? Strictly speaking, the movement of a planetary mixer is not directly related to its mass, but is related to speed and power. Because some factories use large planetary mixers that require a lot of driving power, the rotation speed of the shaft is very fast after power on. The manufacturers of planetary mixers move the blades agilely to stir objects, and there will naturally be movement. And some planetary mixers are silent, because the mixed objects are lighter and the speed is slower. However, when you buy a planetary mixer, you can still judge the planetary mixer by its movement, but not by its movement, but by whether there is noise when the blades are working. ACEY NEW ENERGY provides different kinds of Planetary mixer，Electric vacuum mixer etc.