Views: 30 Author: Site Editor Publish Time: 11-23-2021 Origin: Site
In recent years, with the development of electronic technology, 5G technology and artificial intelligence, global electronic products tend to be intelligent, thinner, wireless, and entertaining. Products represented by true wireless Bluetooth headsets, smart watches, smart speakers, etc. The demand for button batteries has also grown substantially. A large number of laser welding technology is used in button battery manufacturing. The following Leapion laser introduces the application of laser welding machine in button battery manufacturing.
For example, TWS earphones usually have 3 batteries, two earphones and one charging compartment. The new rechargeable button battery is more difficult to process than disposable button batteries because of its compactness and energy storage function. The traditional button battery processing technology is to use the thermal effect of the resistance to thermally fuse the solder tabs and the battery shell to form a welding resistance welding.
1. The traditional button battery processing technology can only be used for single material welding, the welding marks are not beautiful, the welding spot size is inaccurate, it is easy to be oxidized and blackened, and the front edge is large;
2. The traditional button battery processing technology is greatly affected by equipment and personnel operations during the operation process, and it is easy to cause safety problems such as falling off of the solder tabs and drop of the battery voltage of the solder feet.
New button batteries are generally applied to circuit boards during processing, and pins need to be soldered on the surface. According to the needs of different circuit boards, there are often various forms of solder pins. At the same time, the solder pins of the new button battery are more complicated.
1. Laser welding technology can meet the diversity of button battery processing technology, such as welding of dissimilar materials (stainless steel, aluminum alloy, nickel, etc.);
2. Laser welding has a higher energy density, and it is easier to reach the material absorption threshold, especially for high-reflection materials, which has more obvious advantages;
3. Laser welding can realize a variety of welding trajectory graphics, such as: sine line shape, spiral line shape, spiral point shape, etc.;
3. Laser welding has smaller weld spots and larger weld depth-to-width ratio. With the same weld spot size, a larger contact area can be obtained, and the weld strength and tensile force are greater;
4. Laser welding has higher power density. The welding principle is different from the traditional welding principle based on large molten pool. It is more similar to the inlaid welding effect and can obtain higher weld seam strength, especially in the welding of dissimilar materials, which can reduce the formation of brittle compounds.
5. Laser welding has irregular welding track, excellent welding appearance, firm welding seam, more detailed welding, precise positioning and positioning of the welding area, etc.
6. Laser welding can also make the product consistency high and reduce the damage to the battery, avoiding the waste of raw materials.
7. The laser welding machine can also be equipped with a production line to realize automatic feeding, automatic detection and sorting, and the automatic production function of button battery welding, assembly, bonding and automatic electrical detection through the robot combined with the laser equipment, which can realize the button High-quality, large-scale and flexible production of batteries.
For more information and inquiries about laser welding machines, please pay attention to Leapion Laser.
