Views: 38 Author: Site Editor Publish Time: 08-20-2021 Origin: Site
New energy vehicles are a new concept of transportation. With the popularization of low-carbon travel and healthy living, new energy vehicles have received widespread attention. Compared with traditional fuel vehicles, new energy vehicles use lithium batteries as a power source. The production of lithium-ion batteries is closely linked by one process step. Generally speaking, the production of lithium batteries includes three parts: pole piece manufacturing, battery cell manufacturing, and battery assembly. In these three major processes, laser cutting is one of the key processes. Let's give you a specific introduction to Leapion laser.
At the moment, new energy vehicles generally only refer to pure electric vehicles, that is, the familiar Tesla and a group of new car-making forces. The core component of pure electric vehicles is: lithium batteries. As a new type of clean energy, lithium batteries are not only used in new energy vehicles, but also widely used in some other industries.
Lithium ion battery is a kind of secondary battery (rechargeable battery), which mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. As a new type of clean energy, lithium batteries can not only provide power for new energy vehicles, but also provide power for various products such as electric trains, electric bicycles, and golf carts.
The production of lithium batteries is connected by a series of processes, and the production process can be divided into three parts: pole piece manufacturing, battery cell production and battery assembly. The quality of lithium batteries directly determines the performance of new energy vehicles, which requires extremely high precision in their manufacturing processes. Laser technology represented by laser cutting and laser welding, as a newly advanced "light" manufacturing tool, exhibits the characteristics of high efficiency, precision, flexibility, reliability and stability, low welding material loss, automation and high degree of safety, and is widely used in power lithium batteries In the process.
The processing of lithium batteries requires high precision and quality. Before the advent of laser technology, the lithium battery industry usually used traditional machinery for processing and cutting. However, traditional die cutter equipment will inevitably wear out and dust will fall during use. And produce burrs, and then cause various dangerous problems such as battery overheating, short circuit, and even explosion.
In order to avoid the danger caused by poor processing quality of lithium batteries, laser cutting is more suitable. Compared with traditional mechanical cutting, laser cutting has the advantages of no physical wear, flexible cutting shape, edge quality control, higher accuracy and lower operating costs. It is conducive to reducing manufacturing costs, improving production efficiency, and greatly shortening new product molds. Cut cycle.
1. Lithium battery is mainly composed of positive electrode, negative electrode, separator, electrolyte and battery shell. The application of laser cutting technology in the manufacture of lithium batteries mainly includes laser tab cutting and shaping of positive and negative electrodes, laser pole piece cutting, laser pole piece slitting, and laser cutting of diaphragms.
Among them, laser tab forming is currently the most important application of laser cutting in the field of lithium battery manufacturing.
The tabs are metal conductors that draw the positive and negative current collectors out of the lithium battery. Tab forming is a process of cutting out conductors on the positive and negative current collectors. It is one of the key processes in the manufacturing process of power batteries and some consumer electronic batteries. It is generally used as a pre-process for winding or lamination. Traditionally, the mechanical die-cutting process is mainly used for the forming of the tabs. The mechanical die-cutting process has limitations such as fast die loss, long die change time, poor flexibility and low production efficiency, and it has become increasingly unable to meet the development requirements of lithium battery manufacturing.
Due to the many advantages of laser cutting technology, with the maturity of high-power, high-beam quality nanosecond lasers and single-mode continuous fiber technology, laser tab cutting has gradually become the mainstream of tab forming technology.
2. Due to the high requirements for accuracy, controllability and quality of processing machines, it is more suitable for laser processing in metal foil slitting, metal foil cutting and isolation film cutting that need to be used in the cutting process.
Lithium batteries, as the core components of new energy vehicles, directly determine the performance of the entire vehicle. With the gradual explosion of the new energy vehicle market, laser cutting will have great market potential in the future. For more professional questions about laser cutting machines, please consult Leapion Laser.
