一种适用于低粘度浆料的涂布垫片

By setting a slurry chamber, a guide port, a replaceable adjustment plate, and a chamfer on the coating pad, the problem of uncontrolled electrode edges during the coating process of low-viscosity slurry is solved, and the uniformity of electrode thickness and yield are improved.

CN224507458UActive Publication Date: 2026-07-17中汽新能(天津)电池科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
中汽新能(天津)电池科技有限公司
Filing Date
2025-05-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

During the coating process, low-viscosity slurry can easily cause the edge position of the electrode to become uncontrollable, resulting in bulging, which affects the electrode yield and increases costs.

Method used

Design a coating pad, set with a slurry chamber and a guide port, and install replaceable adjustment plate mechanism and chamfer at both ends of the guide port. By cooperating with the adjustment plate and the chamfer, the slurry flow rate is controlled to thin the edge thickness of the electrode.

Benefits of technology

It effectively improves the slurry flow rate at the edge of the electrode, eliminates edge bulging, increases electrode yield, and reduces costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

本实用新型公开了一种适用于低粘度浆料的涂布垫片，所述涂布垫片上设置有浆料腔，所述浆料腔的一侧边设置有用于浆料挤出的导流口；所述导流口的两端为对称结构，且均设置有用于浆料削薄的可替换调节片机构和用于使极片边缘处厚度减小而消除鼓边的斜倒角。本申请通过对涂布垫片设置可替换调节片机构和斜倒角使浆料被阻挡和回流，从而能够改善涂布时极片边缘浆料的流量达到削薄极片边缘厚度的目的。削薄量的大小可以通过更换调节片实现。该涂布垫片可使粘度较低的浆料得到充分的利用而提升良品率，降低成本。
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Claims

1. A coating shim suitable for use with low viscosity slurries, characterized in that, The coating pad is provided with a slurry cavity (4), and a guide port (2) for slurry extrusion is provided on one side of the slurry cavity (4); the two ends of the guide port (2) are symmetrical structures, and both are provided with a replaceable adjustment plate mechanism for slurry thinning and a chamfer (6) for reducing the thickness at the edge of the electrode to eliminate the bulging edge.

2. A coating shim suitable for use with low viscosity slurries according to claim 1, wherein, The slurry cavity (4) is a concave shape with openings at the top and bottom.

3. The coating shim suitable for use with low viscosity slurries of claim 1, wherein, The replaceable adjustment plate mechanism includes a replaceable adjustment plate (3) and an n-shaped slot (5). The replaceable adjustment plate (3) includes an n-shaped connecting part (31) and a thinned part (32) connected to the n-shaped connecting part (31) near the slurry chamber (4). The n-shaped slot (5) is located at the end of the guide port (2) and is used in conjunction with the n-shaped connecting part (31). The n-shaped connecting part (31) is engaged in the n-shaped slot (5).

4. A coating shim suitable for use with low viscosity slurries according to claim 3, wherein, The bottom end of the first side of the n-shaped connecting part (31) connected to the thinning part (32) is lower than the bottom end of the second side. Correspondingly, the depth of the first side groove of the n-shaped slot (5) that mates with the first side is greater than the depth of the second side groove that mates with the second side. The first side groove is open from top to bottom, and the upper end of the second side groove is open while the lower end is closed.

5. A coating shim suitable for use with low viscosity slurries according to claim 4, wherein, When the n-shaped connector (31) is engaged in the n-shaped slot (5), the bottom of the first side and the thinned part (32) are flush with the bottom of the guide port (2), and the top of the n-shaped connector (31) is flush with the top of the guide port (2).

6. A coating shim suitable for use with low viscosity slurries according to claim 5, wherein, The chamfer (6) is located on the outside of the replaceable adjustment plate mechanism, and there is a gap (7) between them. The thinning part (32) is provided with an extension (33) protruding from the outside end of the n-shaped connecting part (31) on the side away from the slurry chamber (4). The width of the extension (33) is the same as the width of the gap (7).

7. The coating shim suitable for use with low viscosity slurries of claim 1, wherein, The chamfer (6) is set at the outer corner of the guide port (2) and is sloped, with the thickness decreasing as it gets closer to the guide port (2).

8. A coating shim suitable for use with low viscosity slurries according to claim 7, wherein, The chamfer (6) is a right triangle with two right-angled sides, and the two right-angled sides coincide with the side of the guide port (2) where the replaceable adjustment plate mechanism is provided and the side of the guide port (2) away from the slurry chamber (4).

9. A coating shim suitable for use with low viscosity slurries according to claim 8, wherein, The thickness at the intersection of the chamfer (6) and the side of the replaceable adjustment plate mechanism of the guide port (2) is zero, and the thickness at the side furthest from the guide port (2) where the replaceable adjustment plate mechanism is set is the largest, which is half the thickness of the coating pad at the guide port (2).

10. The coating shim suitable for use with low viscosity slurries of claim 1, wherein, The coating pad has a symmetrical structure and is provided with a fixing through hole (1) for fixing the coating pad.