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Author ：Iflowpower – Portable Power Station Supplier
Several lithium-ion battery welding methods? Laser welding in a lithium ion battery industry. Dynamic lithium battery as the core component of new energy vehicles, its quality directly determines the vehicle performance. Lithium-ion battery manufacturing equipment accuracy and automation level will directly affect the productivity and consistency of the product, and laser processing technology has been widely used in lithium battery manufacturing equipment as an alternative conventional welding technology.
Lithium-ion battery electric welding machine is essential, upper, lower two electrodes, often there will often be foreign objects, and the power-on check is that we must use when using the spot welder. This is used An important part of the welder, sometimes electrical equipment may have a dew phenomenon, of course, our airline system, etc. may have leakage, so we must do a good job before using the lithium-ion battery, thus protecting the safety of our production.
conduct. Several lithium-ion battery welding methods? 1 Peak welding: Essentially ultrasonic welding and laser welding; 2 ultrasonic welding: This method is simple, but to occupy more space, the volume of the module will be lower; 3 laser welding: Current this The method is the most widely used, but there is a slightly different structure; 4 xenograft metal laser welding: this welding method is also high, the production speed is fast. Key Technologies for the future development of the laser welding in the lithium ion battery industry's future development is the safety, cost and energy storage capacity of the dynamic lithium-ion battery.
The production process of the power lithium battery is complex, and one of the safety requirements is high. One of the key process techniques in the production process is laser welding technology; the power lithium battery laser welding process includes battery soft connection welding, top cover welding, sealing spike welding, module Pack welding. Dynamic lithium battery laser welding parts, high reliability and safety requirements, and put forward higher requirements for laser welding equipment.
The welding of the battery explosion-explosion valve is welded by a pulsed laser, and continuous sealing welding is achieved by overlapping and coverage of solder joints, but the welding efficiency is low, and the sealing is relatively poor. High-speed high-quality welding, welding stability, welding efficiency, and good quality can be guaranteed. The housing material of the power lithium battery has aluminum alloy and stainless steel, with the highest aluminum alloy, generally 3003 aluminum alloy, and a small number of pure aluminum.
Stainless steel is the best material, especially 304 stainless steel, whether pulsed or continuous lasers can achieve good appearance and good performance. The laser welding is a laser beam as an energy source, and the light beam that causes the laser to collect high power density by the focusing device to heat the surface of the workpiece, and the material is dissolved in the material inside the material to form a specific solubility. When using laser welding, the thermal influence zone of the workpiece is small; the solder joint is small, the welding size is high; the welding method belongs to non-contact welding, there is no need to add external force, the product is small; the welding quality is high; the efficiency is high, easy to achieve automation production.
With the continuous advancement of technology and process methods, the characteristics of laser as non-contact flexible manufacturing tools will be more obvious. Laser manufacturing is inevitable to facilitate advanced manufacturing technologies for convenient, green, energy-saving reduction, promote technical progress and product technology transformation in my country's industrial sector, to meet the development of national economies, especially manufacturing. my country's laser industry is developing rapidly, and laser welding has made breakthroughs, and equipment prices will also decrease, which will reduce laser welding in lithium-ion battery production costs, initially more lithium ion battery manufacturers will choose laser welding.
Laser welding will get more and more widely used in lithium-ion battery industries, and form new trends.
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