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...