Soft Pack Battery Laser Welding Detailed

With the rapid development of new energy vehicles, lithium batteries, as its important power source, has also been widely used. Among them, as a new form of lithium battery, flexible pack battery has the advantages of thin, flexible, safety, etc., and gradually become the mainstream of the lithium battery market. And in the soft pack battery manufacturing process, laser welding technology as one of the important means, has also been widely used. This paper will be respectively from the soft pack battery, soft pack battery laser welding technology, laser welding machine and power battery four aspects, a detailed introduction to the application of laser welding technology in the soft pack battery manufacturing.

Soft pack battery
First, the soft pack battery overview
Soft pack batteries are composed of multiple cell monomer batteries, the outer layer of which is made of flexible materials, compared to the hard shell batteries are thinner, more flexible, safe. Soft pack batteries are mainly used in mobile power, electric tools, electric motorcycles, electric bicycles, drones and other fields, but also one of the important power sources of new energy vehicles.
With its high energy density, high safety and long life, flexible pack battery is considered as one of the mainstream products in the lithium battery market. And among them, the application of laser welding technology in the manufacturing of soft pack batteries is also constantly promoting the development of soft pack battery manufacturing technology.
Second, soft pack battery laser welding technology
Laser welding technology is a high-precision, high-efficiency welding technology. In the manufacturing process of soft pack batteries, laser welding technology is mainly used in the manufacture and connection of the core monomer, the manufacture of the battery shell and so on. The application of laser welding technology in the manufacture of soft pack battery has the following advantages:
1. High efficiency
Laser welding technology can realize non-contact processing, which improves the production efficiency. At the same time, because the weld seam of laser welding is very small, it can reduce the loss of material and improve the utilization rate of material.
2. High precision
Laser welding technology can realize high-precision welding, the position and size of the welding point can be precisely controlled. At the same time, laser welding technology can realize the control of tiny deformation and thermal damage to the material, which can ensure the quality and stability of the products in the welding process.
3. High reliability
Laser welding technology can realize the welding strength of the welding point is very high, can greatly improve the reliability and stability of the product. At the same time, laser welding technology can avoid the welding process of porosity, oxidation and other quality problems.
Third, the application of laser welding machine
Soft pack battery laser welding machine is a kind of equipment specially used for soft pack battery manufacturing, can realize the battery monomer manufacturing and connection, as well as the manufacturing of battery shell. Laser welding machine in the soft pack battery manufacturing applications, mainly including the following aspects:
1. Electric cell manufacturing and connection
The battery monomer in the soft pack battery needs to be connected by the laser welding machine to realize the manufacturing of the electric core. In this process, the laser welding machine can realize the rapid connection of the battery monomer through the high efficiency and high precision working method, and improve the production efficiency and consistency.
2. Shell manufacturing
Soft pack battery shell is usually made of aluminum foil or other composite materials, the processing and connection of these materials also need to use laser welding technology. Laser welding machine in the shell manufacturing can provide high efficiency and high precision welding to realize the shell manufacturing and connection.
3. The manufacturing of electric core bushing
Soft pack battery cells need to be fixed in the internal bushings, this process also needs to use laser welding technology. The laser welding machine can realize the precise trimming and connection of the core bushing, which improves the product quality and production efficiency.
4. Cell and BMS (Battery Management System) connection
The electric cell in the soft pack battery needs to be connected with BMS to realize the management and control of the battery. This process also requires the use of laser welding technology. Laser welding machine can realize the precise connection between the electric cell and BMS, and improve the reliability and stability of the product.
Fourth, the application of laser welding technology in power battery manufacturing
Laser welding technology can not only be applied to soft pack battery manufacturing, but also can be applied to power battery manufacturing. Power battery as one of the core components of new energy vehicles, its manufacturing and connection quality of vehicle performance and safety has a critical impact. The application of laser welding technology in power battery manufacturing can realize high efficiency, high precision and high reliability welding method, which improves the quality and stability of products.

Soft pack battery laser welding technology in lithium battery manufacturing has become a trend. The application of Haive laser soft pack battery laser welding machine in soft pack battery manufacturing can improve production efficiency, reduce material loss, improve the quality and stability of the battery. At the same time, the laser welding machine can realize the control of small deformation and thermal damage to the material. In the future, with the expansion of the new energy lithium battery market, the application of laser welding machine in lithium battery manufacturing will be more widely used.