Introduction and Characteristics to Lithium Battery Electrode Slitting During the cutting process of lithium-ion battery, the quality of the cutting edge of the electrode plate has an important impact on the performance and quality of the battery, including: (1) burr and impurities will cause short circuit in the battery, causing self-discharge and even thermal runaway; (2) The dimension accuracy is poor, which can not guarantee that the negative pole completely wraps the positive pole, or the diaphragm completely isolates the positive and negative pole pieces, causing the battery safety problem; (3) Material thermal damage, coating peeling, etc., resulting in material deactivation and inability to use; (4) The unevenness of the trimming leads to the non-uniformity of the electrode charge and discharge process. Therefore, the cutting process of lithium-ion battery electrode should prevent these problems and improve the process quality. 1. Disc shearing The disc slitting is mainly composed of upper and lower disc cutters, which are installed on the cutter shaft of the slitter. The rolling shear principle is used to cut the positive and negative pole plates with a thickness of 0.01~0.1mm. 2. Die punching/slitting The die-cutting process of lithium ion battery electrode is divided into two types: (1) Die-cutting of wood plate, the sharp blade is installed on the wood plate, and the blade is used to cut the electrode under certain pressure. This process mold is simple and low cost, but the punching quality is not easy to control, and it is now being phased out. (2) The metal die is used for punching, and the pole piece is cut by using the very small gap between the punch and the lower die. There’s also battery slitting machine can slit electrode piece into certain width strips. The coating particles are connected together by adhesive. During the punching process, the coating particles are peeled off under stress, and the metal foil undergoes plastic strain. After reaching the breaking strength, cracks appear, and the cracks grow and separate. The section of metal material punching parts is divided into four parts: angle collapse, shear zone, fracture zone and burr. The wider the shear band of the section, the smaller the height of the collapse angle and burr, and the higher the section quality of the punched part. 3. Laser cutting of lithium ion battery electrode There is a problem of tool wear in disc cutting and die cutting, which is easy to cause process instability, resulting in poor cutting quality of electrode pieces, and the battery performance degradation. Laser cutting has the characteristics of high production efficiency and good process stability, and has been applied to the cutting of lithium-ion battery electrode plates in industry. Its basic principle is to use a high power density laser beam to irradiate the cut battery electrode plates, so that the electrode plates are quickly heated to a high temperature, and rapidly melt, vaporize, ...

Notice of Spring Festival Holiday To our valued business associates, clients and friends: Thank you very much for your long-term cooperation and support always. The Spring Festival is coming soon, we wish you a happy Chinese New Year, prosperous business and all the best. Let‘s go ahead together to win better future in 2023. Our Spring Festival holiday is from Jan. 15th to Jan. 28th, 2023 and will be back to work on Jan. 29th(Sunday).We apologize for the inconvenience caused to you during the holiday.If you have inquiry and after-sales questions,please leave us a message,and we will get back to you as soon as possible.Thanks again for your long-term support and understanding. Looking forward to greater success in 2023. Best Regards, Xiamen Acey New Energy Technology Co.,Ltd Emergency contact : Allen Tang E-mail:allen@xmacey.com Tel&WhatsApp&Wechat:+86-18950009155.

Application of Wire Bonding Technology in Power Battery Field 1. What is aluminum wire bonding ultrasonic welding technology? Aluminum wire ultrasonic welding is actually a wire bonding technology using aluminum as metal wire. Wire bonding is a primary internal interconnection method, which is used as a primary internal interconnection method to connect to the actual bare chip surface or device logic circuit. This connection method connects the logic signal or chip electrical signal with the outside world. 2. The application of wire bonding method Wire bonding machine has been widely used in microelectronics and power electronics since 1970. At present, wire bonding technology has a new application field, that is, the growing field of electric vehicles, especially in battery connection. In the production process of some electric vehicles, wire bonding technology is used to connect battery packs. TESLA is a typical representative company using this technology. 3. What are the advantages of wire bonding process? Traditional brazing and fusion welding technologies have been used for many years, and there are some disadvantages. For example, the generation of thermal stress, cleaning problems after welding, lack of flexibility and difficulty in quality control. Bonding's wire welding and strip welding perform much better than traditional welding in this respect, and can control every welding point well, without any adverse effect on the production process. 1) When aluminum wire welding or aluminum strip welding is used, it can be conducted at room temperature. No external temperature is required, and the temperature of the welding zone will not rise during ultrasonic friction welding. Other traditional welding methods require heating to melt the metal. 2) Wire bonding is a clean welding technology and does not require any post welding cleaning. After the traditional welding technology, there will be some residual flux or molten metal explosive that needs to be removed to avoid reliability problems. However, wire bonding needs to be cleaned only when there are some pollutants or stubborn oxides on the surface. 3) Wire bonding has good flexibility and strong compatibility, including low gold wire height, multi pin selection, large working range, ribbon or round wire selection. 4) The metal wire can have good direction flexibility, and can control the mismatch between a variety of thermal expansion parameters. 5) Different from spot welding machine. The wire bonding machine can be directly used as the fuse process in the lead wire connection process, eliminating the need to use resistance welding to weld nickel sheets, simplifying the production process and reducing equipment investment. Acey new energy is a professional supplier of aluminum wire bonding equipment and other battery making machineries for different cell kind. Welcome to send us your inquiries

How Does Ultrasonic Spot Welding Machine Work? In the production process of the lithium-ion battery cell, the cell is composed of multiple layers of electric core electrode sheets. Each layer of electric core foil stretches out a layer of lug foil. After the cell sheets are aligned, the lug foil is also pasted and aligned together. It is necessary to weld the electric core sheets together to form the cell, and the lug foil is welded together to form the lug. Because the lug foil is very thin, only about 001mm, the traditional method is ultrasonic welding. During welding, the lower part of the superposed lug foil is padded with the upper bottom die as a support, the welding head of the ultrasonic spot welding machine is pressed on the superposed lug foil, and a certain pressure is applied to the lug foil through the welding head, then the ultrasonic welding device is started, and the welding head directly outputs the ultrasonic, realizing the resonance of the atoms on the adjacent lug foil under high-frequency vibration, so as to combine the lug foil. Another traditional welding method is secondary welding, that is, the superposed lug foils are initially welded by ultrasonic welding device to achieve the initial combination of lug foils, and then the ultrasonic welding device is used for secondary welding again to make the lug foils fit firmly. Ultrasonic welding technology for battery lug The high-frequency vibration wave is transmitted to the two metal surfaces to be welded. Under pressure, the metal surfaces are used to rub against each other to form the fusion between molecular layers. Its advantages are fast, energy saving, high fusion strength, good conductivity, good thermal conductivity, non sparking, and close to the cold state Ultrasonic welding of battery lug It is applied to the welding of battery positive and negative lug, the welding of terminal to harness, and the welding of terminal to terminal. Capacitor positive and negative electrode welding. Sheet to sheet welding, sheet to plate welding, sheet to line welding, line to line welding, plate to line welding, riveting welding. The welding materials are copper, aluminum and nickel strip. Ultrasonic welding of battery lug: it consists of machine, generator and acoustic resistance parts. The equipment consists of generator, acoustic resistor, pneumatic system, machine and bottom mold. (The sound resistance part is composed of three parts: transducer, horn and welding head) Acey new energy is an expert of lithium battery laboratory equipment and battery making materials for different cell research like cylindrical cell, coin cell and pouch cell. Welcome to send us your inquiries

Introduction of ACEY Prismatic Square Battery Cell Sorting Machine ACEY-ASPS The square battery/prismatic battery is one of the lithium-ion batteries, which is commonly used in electric bicycles, new energy vehicles and other fields. With the continuous progress of battery production process, the efficiency of battery manufacturing and production has been greatly improved. After the battery is produced, it needs to be tested and sorted. In the battery sorting operation, it is necessary to classify according to the detection information of each battery. In actual production, battery manufacturers often use sorting tools to classify and put batteries into different battery boxes according to their appearance size, weight, thickness and other information. After the battery box is full, the battery box can be transferred manually or through a transmission mechanism, and the empty battery box needs to be supplemented artificially for later sorting. In this process, continuous sorting equipment is required to complete the battery sorting efficiently. ACEY prismatic battery cell sorting machine is used to test and sort the internal resistance, voltage and other parameters of the square battery. Built-in battery IR tester, software developed based on relevant performance parameters of lithium battery, and sorting according to battery charging and discharging characteristic curve. The equipment has 10 grades of sorting, with an average capacity of 700 cells per hour. Technological process of battery cell sorter The equipment adopts stepping belt drive structure, professional voltage internal resistance tester, single channel test and horizontal moving module sorting. Working process: manual feeding → belt to test position → tester to test products → automatic identification → distribution of electric core module (lead screw servo+belt) → sorting of buffer channel. The equipment has battery NG, OK, identification map, production information traceability and other functions, and the traceability information can be uploaded to the customer's system. Precision voltage internal resistance tester The equipment can adopt different types of battery IR tester. The HIOKI BT3562A battery tester, which is used for high-precision voltage measurement (accuracy 0.01% rdg.), high-speed measurement with response time of 10ms+sampling time of 8ms, and a range of 3m Ω~3000 Ω. The test data is collected by the computer, and compared with the database settings through the network, it is convenient to reference the data at any time. ZX5560B battery tester is with high precision and good stability. The fastest test speed is 100 times/second, the minimum resolution is 0.1u Ω, and the voltage resolution can reach 10uV. Introduction to electrical control principle The equipment is controlled by an industrial personal computer. The time, pressure and position sensors are set as control signals to drive servo motors, directional valves, cylinders and other mechanisms, and automatica...

Notification of National Day To our valued business associates, clients and friends: Have a nice day! National Day is coming.We will have a holiday from October 1st to October 7th,2022, you can leave us a message for inquiries and after-sales questions, and we will reply you as soon as possible, thank you! Best regards to you and your family Emergency contact : Allen Tang E-mail:allen@xmacey.com Tel&WhatsApp&Wechat:+86-18950009155. Xiamen Acey New Energy Technology Co.,Ltd

How Does the Lithium Battery Double-sided Spot Welder Work? The double-sided spot welding machine for lithium battery pack is developed on the basis of single-sided spot welding machine. It is suitable for welding various lithium battery spot welding machines, fully realizing one machine for multiple purposes. How the double-sided spot welder for lithium battery pack is realized, and its working principle is revealed for you. Working principle of double-sided spot welder for lithium battery pack Double side spot welding machine. During the development of spot welding equipment, battery spot welding equipment can be customized according to the production process and welding requirements of users. There are many types of XY axis spot welding machines, double-sided spot welding machines and single head spot welding machines for welding lithium battery packs. Double side spot welder is developed on the basis of single side medium frequency spot welder. First, you need a workstation. Such a workstation is required for welding of some parts. The second part is the requirements for purchasing lithium battery assembly and processing equipment. The premise is that the transformer of intermediate frequency spot welding machine must have a load rate greater than 50%. The dual station intermediate frequency spot welding machine uses a group of main control transformers and a group of controllers to work between the two stations, and must have self-locking features. Medium frequency spot welding machine adopts high-performance pneumatic components. The winch and guide shaft are chrome plated, and the transmission pressure is flexible and reliable. The secondary interior of the welding transformer is cooled by water. It adopts optimized design, high permeability materials, low no-load loss, strong and stable power output, and long service life. Microcomputer controller control, multi standard welding, double pedal, double pulse, double current control, thyristor temperature monitoring and multiple protection functions. The main circuit is controlled by two-way water-cooled thyristor to ensure balanced and reliable current output. The medium frequency spot welder adopts a dual station design, which is suitable for the welding of various lithium battery spot welders, fully realizing one machine for multiple purposes. Acey new energy is a professional supplier of both manual spot welding machine and automatic welding machine. Welcome to contact us for more details.

Discharge C Rate and Correct Charging and Discharging Method of Polymer Lithium Battery Polymer lithium battery is a kind of soft packed lithium battery with gel electrolyte, also known as pouch lithium battery. For the new polymer battery, since the battery will automatically enter the sleep state after being placed for a period of time, the capacity of the polymer battery is very low at this time, and it will also affect the shortening of the service time of the battery. Charging and discharging methods of polymer lithium battery 1. Discharging The discharge current of polymer lithium battery shall not exceed the following standards, and the discharge must be carried out within the scope of this standard. The discharge current of single cell must be less than 2C5A. The temperature range of polymer lithium battery discharge is - 20 ~ + 60 ℃. The discharge termination voltage of single cell shall not be less than 2.75V. 2. Charging The charging current and voltage of the polymer lithium battery shall not exceed the following standards. If the specified value is exceeded, the charging and discharging performance, mechanical performance and safety of the battery cell may be damaged, and heating and leakage may be caused. The polymer lithium battery charger must be able to charge at constant current and voltage. The charging current of the single battery during charging must be below 1C5A. The temperature range during charging is 0 ~ + 45 ℃. When the polymer lithium battery is charged, the voltage shall not exceed 4.23V. Discharge C rate of polymer lithium battery: C: It is used to represent the ratio of battery charge and discharge current, i.e. magnification. For example, for a 1200mAh battery, 0.2C indicates 240mA (0.2 magnification of 1200mAh), and 1C indicates 1200Ma (1 magnification of 1200mAh). The charge and discharge efficiency is also related to C (rate). Under the condition of 0.2C, the charge and discharge efficiency of polymer lithium battery should be 99.8%. Correct charging and discharging mode of polymer lithium battery: Charging: the charging and discharging of polymer lithium batteries and liquid lithium batteries are actually the same. There are mainly two ways of constant voltage charging and constant current charging, which can also be carried out alternately. In constant current charging, the capacity of the battery increases with time, and the internal resistance of the battery also increases constantly, so the charging becomes slow. At this time, we should not think that the charging is complete, but it will take a period of slow charging. While the manufacturers of general polymer lithium-ion batteries first use constant current to charge the batteries, and then use constant voltage current to charge the batteries. Current, voltage and cell phone power are all changing with time, which ensures that the cell phone's battery can be fully charged quickly. Discharge, we all know that as long as we turn on the mobile phone, we ar...