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