Evaporation boat and vacuum evaporation coating device

By designing accommodating grooves and blind hole structures in the evaporation boat to collect impurities, the problem of impurity splashing during vacuum coating is solved, and high-safety and high-quality current collector film deposition is achieved.

CN223409703UActive Publication Date: 2025-10-03ADVANCED MATERIALS TECH (BEIJING) CO LTD +1
0 Cites 0 Cited by

Patent Information

Application Number
CN202422770007.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-10-03
Estimated Expiration
2034-11-13

AI Technical Summary

Technical Problem

In existing vacuum coating technology, the aluminum nitride wetting layer formed after the reaction between the boron nitride of the evaporation boat material and the aluminum liquid can easily cause impurities to splash, resulting in surface defects of the film material, affecting the safety of battery use and the quality of film formation.

Method used

An evaporation boat is designed, which includes an evaporation boat body with a receiving tank and blind holes. The side wall of the receiving tank is provided with multiple blind holes for collecting impurities, ensuring that the impurities are deposited in the blind holes and reducing droplet splashing.

Benefits of technology

The safety of the vacuum evaporation coating process is improved, deposition defects are reduced, and the available area of ​​the current collector film and the safety of battery use are increased.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model provides an evaporation boat and a vacuum evaporation coating device, the evaporation boat comprises an evaporation boat body (100), the evaporation boat body (100) is provided with a first surface (110) and a second surface which are approximately parallel, and the first surface (110) is provided with an accommodating groove (130); the containing groove (130) is provided with an opening located in the first face (110), a groove bottom away from the first face (110) and a side wall located between the opening and the groove bottom, and the area of the opening is larger than that of the groove bottom; a plurality of blind holes (131) are formed in the side wall of the containing groove (130), and the blind holes (131) are configured to collect impurities. According to the evaporation boat provided with the containing groove of the prismatic table structure, in the target melting process, impurities deposited on the edge are scoured along with molten aluminum to sink into the blind holes, so that splashing of liquid drops is reduced, the safety in the vacuum evaporation coating process is improved, meanwhile, the deposition coating defects are reduced, and the product quality is improved. Therefore, the available area of the current collector film after deposition is increased, and meanwhile, the risk when the current collector film is used after being made into a battery is reduced.
Need to check novelty before this filing date? Find Prior Art