What are the characteristics of lithium battery equipment spraying

Source：m.dqig.cn Release date： 2024年12月09日

Information summary：Lithium battery equipment spraying mainly refers to the surface spraying treatment of lithium battery production equipment, which has the following characteristics: 1. High surface quality requirements High precision appearance effect: The appearance quality of lithium battery equipment has a significant impact on product image and the cleanliness of the production environment. The surface a

Lithium battery equipment spraying mainly refers to the surface spraying treatment of lithium battery production equipment, which has the following characteristics:
1. High surface quality requirements
High precision appearance effect: The appearance quality of lithium battery equipment has a significant impact on product image and the cleanliness of the production environment. The surface after spraying needs to have a high degree of flatness and uniformity, without defects such as orange peel, sagging, particles, etc. For example, on the coating machine equipment of lithium batteries, after spraying, the surface of the shell should be as smooth as a mirror, which is not only beautiful but also easy to clean, preventing dust and other impurities from affecting the normal operation of the equipment.
Color accuracy and stability: In order to facilitate the differentiation of different device functional areas or comply with the company's visual recognition system, lithium battery equipment spraying requires high color accuracy. Meanwhile, during the long-term use of the equipment, the sprayed color should remain stable and should not fade due to factors such as light exposure or chemical contact. For example, on some automated lithium battery assembly lines, the main color of the equipment and the color of the warning area need to be strictly sprayed according to standards, and kept bright and correct throughout the years of the equipment's service life.
2. Strict requirements for protective performance
Corrosion resistance: During the production process of lithium batteries, they come into contact with various chemical substances, such as electrolytes (usually containing corrosive components such as lithium salts), organic solvents, etc. Therefore, the coating sprayed on lithium battery equipment must have excellent corrosion resistance, which can prevent these chemicals from corroding the equipment substrate. For example, on the surface of lithium battery injection equipment, the sprayed coating needs to be able to resist the corrosion of the electrolyte for a long time to ensure the service life and safety of the equipment.
Wear resistance: During daily operation, the surface of lithium battery equipment may experience some mechanical friction, such as the moving parts of the equipment, operation panels, and other positions. Spray coating needs to have good wear resistance to reduce surface wear and maintain the appearance and performance of equipment. For example, the wear-resistant coating sprayed around the conveyor belt device of lithium battery equipment can effectively prevent surface damage caused by friction of the conveyor belt and collision of materials.
3. Environmental friendliness and safety
Application of environmentally friendly coatings: Due to the high environmental requirements of the lithium battery industry, environmentally friendly coatings are usually used in the spraying process of lithium battery equipment. These coatings have a low content of volatile organic compounds (VOCs), reducing environmental pollution and harm to the health of operators. For example, water-based coatings are widely used in the spraying of lithium battery equipment. They use water as a solvent and release less harmful gases during the curing process.
Safe spraying process: Lithium battery equipment has complex electrical systems and high-precision mechanical components inside. During the spraying process, safety must be ensured to avoid accidents such as fires and short circuits caused by spraying operations. Therefore, the spraying process requires strict control, such as voltage control during electrostatic spraying and temperature control during drying. For example, when spraying the electrical control cabinet of lithium battery equipment, the internal electrical components should be protected first to prevent the spraying material from entering the components and causing short circuits. At the same time, the drying temperature should be controlled to avoid damaging the electrical components.
4. High process complexity
Strict pre-treatment requirements: Before spraying, the surface of lithium battery equipment needs to undergo meticulous pre-treatment. This includes multiple steps such as degreasing, rust removal, phosphating, etc. to ensure good adhesion between the substrate and the coating. For example, for the metal frames of some large lithium battery equipment, there may be oil stains and oxide layers on the surface, which require a combination of chemical cleaning and mechanical polishing for better cleaning and pretreatment.
Multi layer spraying and composite coating: In order to meet various performance requirements, lithium battery equipment often uses multi-layer spraying technology or composite coating for spraying. For example, spraying a layer of primer first to enhance adhesion and rust prevention, then spraying intermediate paint for filling and leveling, and spraying topcoat to provide appearance and chemical resistance. Moreover, functional coatings such as antibacterial coatings, anti-static coatings, etc. are sometimes added, which increases the complexity of the spraying process.

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