Special-shaped coating die head

By designing irregularly shaped coating dies, the problem of low material utilization in coating dies was solved, the areal density of the coating area was made consistent, the battery manufacturing process was simplified, and the production cost was reduced.

CN223800816UActive Publication Date: 2026-01-16DONGGUAN MATSUI SUPER PRECISION MASCH CO LTD
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Patent Information

Application Number
CN202423293287.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-01-16
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

The low material utilization rate of coating dies in current lithium battery production leads to uneven coating, affecting the efficiency and cost of subsequent battery manufacturing processes.

Method used

Design an irregularly shaped coating die head, comprising an upper die cavity and a lower die cavity, which are respectively connected to an intermittent coating valve and a surface density adjustment component. By independently controlling and switching the reflow of coating A and coating B, the surface density of the coating area can be adjusted to ensure coating consistency.

Benefits of technology

It improves the material utilization rate of the coating die, achieves uniform surface density in the coating area, simplifies the later stages of battery manufacturing, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a special-shaped coating die head, and relates to the technical field of lithium battery production, the die head comprises an upper die, a lower die and a middle part, an independent upper die cavity is arranged between the upper die and the middle part, an independent lower die cavity is arranged between the lower die and the middle part, and the upper die and the lower die are arranged in parallel. And an inlet of the upper die cavity and an inlet of the lower die cavity are respectively connected with a gap coating valve. When the intermittent coating valve disclosed by the utility model is used for carrying out backflow switching on a coating A, the coating flows away from the backflow port of the intermittent coating valve, and the lower-layer coating area and the upper-layer coating area corresponding to the lower mold cavity are disconnected, so that the blank clearance requirement of the coating area is met; the corresponding coating surface density areas are adjusted through the surface density adjusting assembly and the surface density adjusting assembly respectively, so that the consistency of the surface density of the whole area is realized, the simplification of the battery manufacturing back-end process is realized, and the effects of reducing the cost and improving the efficiency are achieved.
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Citation Information

Patent Citations

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