Button cell (buttoncell) is also called a coin cell. In terms of appearance, it refers to a battery with a size like a small button. Generally speaking, the diameter is larger and the thickness is thinner. The corresponding battery classifications include cylindrical battery, pouch battery, prismatic battery. Here are the step and process of coin cell： battery preparation： 1. Preparation of active materials by rotary kiln sintering 2. Mix and grind the prepared materials 3. Vacuum stirring the prepared positive and negative electrode mixture 4. Use a viscometer to measure the viscosity of the slurry when the coating effect is better, and record it so that the battery slurry can be adjusted to this viscosity in the next experiment 5. Use a slurry filter device to filter out various hard particles with a particle size of not less than 124 microns in the slurry 6. The positive and negative electrode materials are respectively coated on the current collector and dried 7. Roll the dried positive and negative substrates to reduce the thickness and increase the density. 8. Move the pole piece into the drying box for further drying battery packaging 9. Cut the positive and negative electrode sheets and separator paper into small circles with the specified diameter 10. Move the cut pole piece, separator paper, electrolyte, battery case and other accessories into the glove box (water oxygen content should be less than 11PPM) 11. Assemble the batteries in the order of stacking from bottom to top and inject the electrolyte: negative electrode shell > flat pad + appropriate amount of electrolyte > metal lithium sheet + appropriate amount of electrolyte > one layer of separator paper + appropriate amount of electrolyte > positive electrode + appropriate amount of electrolysis Liquid>Flat pad+Appropriate amount of electrolyte>Shrapnel>Positive shell 12. Encapsulate the battery on the encapsulation machine battery test 13. Use a battery analyzer to test the battery capacity and cycle aging 14. Use an internal resistance tester to measure the internal resistance of the battery The battery shells of the commonly used button batteries are CR2032, CR2025, CR2016, etc., C stands for the button battery system, and R stands for the round shape of the battery. The first two digits are the diameter (unit mm), and the last two digits are the thickness (unit 0.1mm), whichever is closer to the two. For example, the approximate size of CR2032 is 20mm in diameter and 3.2mm in thickness. ACEY provides the whole line of coin cell lab equipment.

    70% of the quality of the battery is related to the quality of the pole piece, and 70% of the quality of the pole piece is related to the quality of the slurry. Therefore, a good slurry is equivalent to half of a battery, and homogenization is the primary and core task of battery manufacturing. Laboratory cell processes tend to be more elaborate than commercial cell processes, except for the homogenization process. This also shows that homogenization is also a difficulty in battery manufacturing.      The main purpose of slurry dispersion of lithium ion batteries is to uniformly disperse active materials, conductive agents, binders, etc. in a solvent according to a certain mass ratio to form a stable slurry with a certain viscosity, which is used for the coating of pole pieces. The purpose of the lithium-ion battery pulping process is to prepare the film for production. The requirements of the pole piece for the ideal slurry:  1. The active material particles are fine and uniformly dispersed without agglomeration, the conductive agent particles form a thin layer and dispersed into a conductive network, and a large number of active material particles are interlocked and connected on the current collector.  2. The particles of the active material are small, which makes the battery have a high current density.\       At present, the mainstream homogenizing equipment used by lithium-ion battery manufacturers is a double planetary mixer. The double planetary mixer used in the lithium battery industry, also called PD mixer, is equipped with a low-speed stirring part Planet and a high-speed dispersing part disper. The low-speed stirring components are two bent-frame stirring paddles, driven by planetary gears. The paddle rotates when it rotates, so that the material moves up and down, left and right, so as to achieve the ideal mixing effect in a short time. The high-speed dispersing part is generally a toothed dispersing disc, which revolves with the planet carrier and rotates at a high speed at the same time, so that the material is strongly sheared and dispersed. Its effect is several times that of ordinary mixers. The dispersion part is divided into monodisperse shaft and double dispersion shaft. Dispersion axis.     The preparation of slurries in twin planetary mixers often utilizes shear forces generated by hydrodynamics, which are governed by flow shear rate, cluster cross-sectional area, and hydrodynamic viscosity. The preparation of the slurry generally involves two processes: the breakup of the clusters and the reorganization of the suspended aggregates.     ACEY NEW ENERGY provides different kinds of battery material mixing machine.

    In the daily use of the planetary ball mill, the excessive wear of the grinding balls will not only increase the cost of the grinding balls, but also have a negative impact on the quality of the material output, so we should try to reduce the wear of the grinding balls.     When the planetary ball mill is running, the grinding balls will continuously collide and rub against the material, the inner wall of the ball mill, and the grinding ball itself, which in turn leads to the wear of the grinding ball. Excessive wear of grinding balls will not only increase the cost of grinding balls, but also adversely affect the quality of material output, so we should try to reduce the wear of grinding balls.     To reduce the wear of the grinding balls of the planetary ball mill, we must first know what factors affect the wear of the grinding balls? These factors can be roughly summed up as follows:     The size, ratio and loading of grinding balls: The quality of grinding balls will change with the size. At a certain speed of the planetary ball mill, the greater the quality of the grinding balls, the greater the impact. When configuring the size of the grinding balls, the collision probability between the grinding balls of the same size is higher, and the grinding balls are prone to fatigue wear, and the loading of the grinding balls will also affect the collision probability between the grinding balls.     The size and speed of the planetary ball mill: the larger the planetary ball mill, the larger the diameter of the ball mill tank, the movement speed of the grinding ball will increase accordingly, and the impact will also become larger, which will accelerate the wear and tear. The same is true for speeding too fast.     Types and properties of grinding balls: The wear conditions of different grinding balls vary with density, hardness, elasticity, wear resistance and acid and alkali resistance.     The properties of the grinding material of the planetary ball mill: the hardness, brittleness, shape and size of the material have an extremely important influence on the grinding process of the grinding ball.     ACEY provides different kinds of lab ball mill.     

Dear New & regular customer, Since the Chinese Spring Festival is coming soon. ACEY team hope to share this joy with you, wish you and your family happiness! Allow me to congratulate you on the arrival of the New Year and to extend to you all my best wishes for your perfect health and lasting prosperity. We are pleased inform you that our Chinese New Year holiday start from Jan. 28th to Feb. 7th. We’ll check our email time by time, the orders can be placed normally during this period and we will start processing them on the first working day after the holiday. If you have anything in urgent, please feel free to send email at：allen@xmacey.com or call us at 008618950009155, we’ll go back to you asap. Thank you for all your support, we are expecting to grow and move forward with you in the coming prosperous new year.

The spot welding machine develops and energizes the weldment according to the expansion and pressure of the electrodes, and the Joule heat (in an instant) is generated according to the touch resistance between the electrodes to melt the metal to ensure the purpose of welding. Actively store welding specifications and implement multi-standard welding in a continuous cycle. During continuous welding, the shunt phenomenon of solder joints in different parts of the same workpiece saves the complicated operation of switching welding specifications. Setting the preheating current, welding current and tempering current is useful to deal with spatter that occurs during welding and quenching of the workpiece after welding, and 4 discharge pulses can be applied independently. The constant current-constant voltage operation mode of the intermediate frequency spot welding machine is that the controller can select the constant current or constant voltage operation mode according to the parameter settings, compare the sampling signal of the welding current/voltage with the set value, and actively change the phase shift angle to achieve The purpose of maintaining the welding current/current constant voltage. ACEY new energy spot welding machine products are made of high-quality copper material, with good electrical conductivity and high quality. It has resistance welding equipment such as spot welder, seam welder, nut spot welder, flash butt welder and other welding equipment, and can customize non-standard automatic welding equipment according to the specific welding requirements of customers.

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.