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.

During the operation of the coating machine, it will first follow two operation procedures:   1, the process of setting the thickness of the forward roller   2. Reversal roller coating process Coating machine reverse roll coating and its coating window: In the pole cloth machine, the slurry coating on the coating roll is the copper foil wrapped in the vacant area of the bright roll to the reverse roll. Or on aluminum foil. Therefore, the coating process must also meet the rules of reverse roller coating. In the reversal roll coating process, if the vacancy of the two rolls is relatively small, the capillary number is low enough, that is, when the viscosity or speed is relatively small, the activities in the plan with a relatively wide speed ratio are relatively stable. Can get better coating apparent quality. If the vacancy is relatively large, when the coating speed is high, it will simply show air entrapment, and there will be many fine air bubbles on the surface of the coating. Sometimes in order to increase the output value, the advancing coating speed is selected, which can show the harmfulness of air trapping. In order to eliminate this harmfulness, the operation method of reducing the space is selected. If the space is too small, the coating roller and the back roller are kneaded with each other, and the load of the motor and reducer is additionally added, which constitutes abnormal wear. This is also one of the reasons why the coating speed of the slurry in the reverse roller is limited. Forward roller coating and its coating window: First introduce the terminology in coating skills-coating window. Any coating method (method) has an applicable plan, which can be harmless within certain operating conditions (plan) Coating, that is, evenly coating a thin layer of fluid on the support, the plan of this coating operation is called the coating window in coating technology. In the coating machine, it is controlled by scheduling the metering gap between the two coating rollers and the metering roller that change in the same direction in the forward roller coating, and the coating of the required thickness is formed on the coating roller. The coating method is the special method of the rotating roller, that is, the speed of the metering roller is zero when the metering roller is not changed, and the cross-section of the metering roller is made into a comma shape, also called a comma scraper. The coating thickness can be adjusted by changing the interval between the comma blade and the coating roller. In this special method of forward roller coating, if the operation is improper, the position of the knife edge is contrary to the working direction, and the coating parameters and slurry parameters are not in a certain plan, it may present a vertical path harm, which is called a vertical path. ACEY NEW ENERGY provides Automatic Intermittent Coating Machine.

Many people have false welding during the welding process using the spot welder, but they cannot find a good solution. In fact, there are many reasons for the false welding. here are the introduce: 1. Stable power supply voltage: During the production process, the voltage of the power grid is unstable, and the high and the low determine the current size, resulting in false welding. 2. Dirt on the electrode surface: During the long-term welding of a large number of workpieces, a thick oxide layer will form on the surface of the electrode tip, which directly affects the conductivity and causes false welding and false welding. At this time, the electrode should be trimmed and removed. Surface oxide layer to achieve the ideal welding effect. 3. Setting of welding parameters: cylinder pressure, welding time, and current directly determine the welding quality. Only when these groups of parameters are adjusted to the best conditions can high-quality products be welded. The specific parameter settings are determined by the material, such as aluminum alloy plate, stainless steel plate, galvanized plate, nut and so on. There is a saying that we are all familiar with, called a good horse with a good saddle. The electrode is a saddle for the automatic spot welding machine, so in addition to choosing a good spot welding machine, we must also pay attention to choosing the appropriate electrode material, so that the spot welding machine can perform better and have a longer service life.  The electrode must transmit current, pressure and heat during the use of the automatic spot welding machine. According to this feature, our basic requirements for electrode materials are as follows: 1. High strength and hardness at high temperature, good resistance to deformation and wear; 2. High electrical conductivity and thermal conductivity, low self-resistance heating, can quickly eliminate the heat from the welding zone, extend the life of the electrode, and improve the heating state of the surface of the weldment of the automatic spot welding machine; 3. The tendency to form an alloy with the weldment metal at high temperature is small, the physical properties are stable, and it is not easy to bond.    One thing to note is that not all electrode materials for spot welding machines have to meet the above-mentioned requirements well, and appropriate electrode materials should be selected according to their own welding process and welding material characteristics. For example, welding high-temperature alloys requires the use of electrode materials with high hardness at high temperatures, but their electrical conductivity and thermal conductivity are often poor, and attention must be paid to cooling during welding. When welding aluminum and aluminum alloy metals with high electrical conductivity, electrode materials with low electrical conductivity, such as copper, cadmium copper, etc., should be selected, but they have high hardness at high temperatures and ...

1. Choose gloves suitable for different workplaces. The size of the glove should be appropriate. If the glove is too tight, it will restrict blood flow, which will easily cause fatigue and uncomfortable; if it is too loose, it will be inflexible to use, and it will easily fall off. 2. The selected gloves must have sufficient protective effect. For example, in the environment where steel wire cut-resistant gloves should be used, synthetic yarn cut-resistant gloves cannot be used. To ensure its protective function, it is necessary to change gloves regularly. If the expiration date is exceeded, hands or skin may be injured. 3. Check the gloves at any time to check whether there are small holes or damaged or abraded places, especially finger joints. For glove box gloves, the inflation method can be used for inspection. 4. Pay attention to the use occasions of gloves. If a pair of gloves are used in different places, the service life of the gloves may be greatly reduced. 5. Pay attention to safety during use, do not throw away contaminated gloves arbitrarily to avoid harm to others. Keep gloves that are not in use in a safe place. The above is the "Precautions for the Use of Laboratory Glove Box Gloves". Everyone must pay attention to these when using them in normal times, so as to ensure the accuracy of the experimental results. ACEY provides lab glove box, vacuum glove box, vacuum glove box with Purifying Function for lithium battery R&D.