Technological methods and processes for processing Pack Aluminum Housing

A lithium battery aluminum case is a battery case made of aluminum alloy material, mainly used in square lithium batteries. Aluminum was chosen because it is lightweight and safer than steel shells. The aluminum shell design of the lithium battery pack is divided into square corners and rounded corners. The material is mostly an aluminum-manganese alloy. The main alloy components include Mn, Cu, Mg, Si, Fe, etc. Among them, Cu and Mg are used to improve strength and hardness, Mn improves corrosion resistance, Si enhances the heat treatment effect of magnesium-containing aluminum alloys, and Fe helps to improve high-temperature strength. At present, aluminum-cased lithium batteries are still the mainstream product of liquid lithium batteries, covering almost all fields of lithium battery applications. As technology evolves, Lithium-ion Battery Aluminum Shell is developing towards higher hardness and lighter weight.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

During the processing of the aluminum casing of the lithium battery pack, shaking may occur when the upper cover and the casing are connected, causing position deviation and thus affecting the processing accuracy. In order to achieve high-precision processing, the manufacturing process must have good stability. At present, the aluminum shell manufacturing technology is quite mature, and the requirements for the material's inflation rate, expansion rate and other indicators are clear, and there are no significant technical barriers within the industry. Compared with soft-pack lithium-ion batteries, aluminum-shell batteries have a higher degree of automation in manufacturing, which can effectively reduce the impact of human factors on product consistency and save labor costs. In the entire manufacturing system, the processing accuracy of Lithium Batteries Square Aluminum Casing is directly related to the performance and appearance quality of the battery pack.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Powder electrostatic spraying process: The principle of this process is similar to the electrostatic spraying of liquid paint, except that the powder spraying is dispersed rather than atomized. The powder particles are negatively charged through an electrostatic powder spray gun, and are coated on the surface of the grounded power battery aluminum shell under the action of airflow and electrostatic attraction, and then heated, melted and solidified to form a film.

 

Electrophoretic painting process: An external electric field is used to cause the particles such as pigments and resins suspended in the electrophoretic fluid to migrate in a direction and deposit on the surface of the electrode substrate. This process is water-soluble, non-toxic, and easy to control automatically. The surface after treatment has a soft luster and can resist the erosion of cement, mortar and acid rain.

 

Electrochemical surface ceramicization process: Plasma-enhanced electrochemical surface ceramicization process is used to treat the New Energy Vehicle Aluminum Battery Case. Although the quality is excellent, the cost is high. This process can present more than 20 shades and can achieve color registration effects as needed, with excellent decorative performance.

 

Frosted process: Frosted aluminum profiles avoid the shortcomings of light interference caused by smooth aluminum alloys in specific environments, and the surface is delicate and soft. The existing technology needs to overcome shortcomings such as uneven surface sand and visible mold patterns. Whether it is an Aluminum Battery Case or a Lithium Cell Aluminum Can, the surface treatment must take into account both aesthetics and durability.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The overall production process of lithium battery packs can be divided into three major sections: pole piece production, battery cell production and battery assembly. Among them, pole piece production is the foundation, battery cell production is the core, and battery assembly directly determines the quality of the finished product. Specific links include positive electrode slurrying, negative electrode slurrying, preparation of positive and negative electrode sheets, steel shell assembly, liquid injection, testing and packaging, etc. The molding process of Deep Drawn Aluminum Battery Housing requires strict control of each process to ensure the dimensional accuracy and sealing performance of the final product. Since the safety performance of lithium-ion batteries is directly related to consumer health, the production process has high requirements for equipment performance, accuracy, stability and automation levels, and each link needs to be strictly and carefully managed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Our company has long been focusing on the field of Pack Aluminum Housing and can stably supply high-precision lithium battery aluminum case products. We strictly follow industry process standards to ensure that each batch of products meets customer requirements in terms of size, strength and surface quality. Friends from all walks of life are welcome to inquire and cooperate.