Application of Battery Laser Welding Machine
Laser welding is a critical process in the production of power batteries, directly impacting the consistency, stability, and safety of the final product.
Cylindrical Laser Welding Machine
With the rapid development of emerging industries such as electric vehicles and drones, the demand for lithium batteries has grown significantly, and their applications have become increasingly widespread. Laser welding, known for its efficiency and precision, has become a key technology in lithium battery manufacturing. However, many customers are unfamiliar with how to select suitable welding equipment for different types of lithium batteries.
Cylindrical batteries are a common type, and laser welding for these batteries involves using a focused laser beam to deliver concentrated energy to the surface of the battery components. This causes the material in the weld zone to heat rapidly, forming a molten pool that fuses the adjoining parts. During the welding process, parameters such as laser power, pulse frequency, and focal position can be precisely adjusted to meet specific welding requirements, ensuring strong and reliable joints.
Due to the small welding spots and seams typical of cylindrical batteries—critical for both sealing and safety—a galvanometer laser welding machine is usually required for optimal results.
thermal CTP plate can also be integrated into automated production lines, enabling fully automated processes that improve productivity, consistency, and manufacturing flexibility. By adjusting welding parameters and fixture designs, the system can easily adapt to varying production needs.
In summary, cylindrical laser welding machines provide an ideal welding solution for battery manufacturers, helping to streamline production while enhancing both battery quality and overall performance.
Power Battery Laser Welding Machine
Laser welding is a critical process in the production of power batteries, directly impacting the consistency, stability, and safety of the final product. Given the complexity of power battery structures and the multiple components involved, the welding process poses significant technical challenges and demands high precision. Efficient and accurate laser welding not only enhances the safety of automotive power batteries but also improves their reliability and service life, making it a key enabler in the advancement of electric vehicle technology.
Power battery laser welding machines offer several advantages:
- Minimal material loss during welding
- Low deformation of the welded components
- Stable and reliable equipment performance
- Simple and user-friendly operation
- High welding quality with clean, precise seams
- A high degree of automation, supporting mass production
Tab Battery Laser Welding Machine
A lithium battery typically features two positive and two negative tabs, while the top cover is equipped with conductive posts corresponding to positive and negative terminals. These conductive posts are positioned on both sides of the battery, aligning with the respective positive and negative tabs. The tabs are electrically connected to the conductive posts, ensuring stable current transmission.
During the battery assembly process, the tabs are first welded to the battery cells, followed by the welding of nickel sheets. Prior to welding the tabs and nickel sheets, the battery undergoes an OCV (Open Circuit Voltage) test to ensure performance standards are met. Afterward, the tabs are trimmed and cut to size before being welded to the nickel sheets. Currently, most of these operations are performed manually using individual specialized devices.
Battery PACK Module Connection Sheet Laser Welding Machine
The battery PACK module serves as the core component of new energy vehicles, with its conductive connection configuration being a top design priority. For instance, the method used to connect individual battery cells to the module's busbar directly influences not only the manufacturing efficiency and automation capability of power battery production but also the overall performance of the assembled battery module. The choice of welding equipment plays a critical role in determining the connection quality and long-term reliability of the module.
The connection sheet in power battery modules typically adopts a multi-layer composite material structure. Among these layers, one specifically serves as the connection interface between the connector and the battery pole, ensuring reliable weldability. The superimposed multi-layer structure enhances conductivity and structural integrity. After stacking the foils, the substrate is processed into the desired shape, forming a flexible area designed to absorb displacement caused by the expansion of the battery cells—thus minimizing stress on low-strength interfaces and improving module durability.
Battery Sealing Welding and Explosion-Proof Valve Welding
The casing thickness of prismatic batteries is typically less than 1 mm, with common specifications being 0.6 mm and 0.8 mm depending on the battery's capacity. Laser welding of prismatic battery enclosures is generally categorized into two methods: side welding and top welding.
Side welding exerts minimal influence on the internal components of the cell, and welding spatter is less likely to enter the battery casing. However, this method may cause surface deformation such as bumps, which can impact subsequent assembly processes. In contrast, top welding is performed on a single plane, providing a more uniform weld seam. However, it places higher demands on the precision of shell placement and positioning during the preceding steps, thereby requiring a greater level of automation to ensure process stability and welding accuracy.