KR-20260065919-A - Coating die head and battery electrode coating device

KR20260065919AKR 20260065919 AKR20260065919 AKR 20260065919AKR-20260065919-A

Abstract

The coating die head is a coating device for a battery electrode plate. The coating die head includes a first die head (1) and a second die head (2). The first die head (1) includes a first body (11) and a first component (12), and the first component (12) is detachably connected to the first body (11). The second die head (2) and the first die head (1) are installed along a first direction (Z), and a cavity (3) for receiving a slurry is formed between the second die head (2) and the first body (11), and an outlet (4) communicating with the cavity (3) is formed between the first component (12) and the second die head (2). When the first component is worn out, the worn first component is removed and a new first component is installed, thereby shortening the downtime of the coating die head, improving coating efficiency, and reducing production costs.

Inventors

잔, 빙양
장, 징둥
장, 라이
천, 웨이강
왕, 창쥔
전, 즈후이
뤼, 성쥐안

Assignees

컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드
컨템포러리 엠퍼렉스 룬즈 소프트웨어 테크놀로지 리미티드

Dates

Publication Date: 20260511
Application Date: 20240802
Priority Date: 20240102

Claims (20)

In a coating die head, A first die head comprising a first main body and a first component - the first component is detachably connected to the first main body - ; A coating die head comprising: a first die head and a second die head installed along a first direction; a cavity for receiving a slurry is formed between the second die head and the first body, and an outlet communicating with the cavity is formed between the first component and the second die head.
In claim 1, further comprising a first fixing member, wherein the first fixing member is installed on the first main body so as to be movable along the first direction; A coating die head, wherein, in the first direction above, a part of the first component is clamped between the first fixing member and the first body.
A coating die head according to paragraph 2, wherein the first fixing member and the first main body are screw-connected, and the first fixing member can adjust the pressure applied to the first component by the first fixing member through rotation.
A coating die head according to claim 2 or 3, wherein a position-fixing recess is provided on one side facing the first fixing member along the first direction of the first component, and the first fixing member contacts the bottom surface of the position-fixing recess.
In any one of claims 1 to 4, a first recess is provided on one side along the second direction of the first main body, and the second direction intersects the first direction; A coating die head, wherein a portion of the first component is received in the first recess.
In claim 5, the first main body includes a first protrusion and a second protrusion installed along the first direction, the first recess is installed between the first protrusion and the second protrusion, and the first protrusion is located on one side adjacent to the second die head of the second protrusion; The coating die head further comprises a first fixing member, wherein the first fixing member is movably connected to the second protrusion along the first direction and is used to compress the first component.
In claim 6, it further includes at least one adjusting piece installed in the first recess; In the first direction above, the adjusting piece is installed between the first protrusion and the first component, forming a coating die head.
A coating die head according to claim 7, wherein the thickness of the adjustment piece is 20μm to 30μm.
In any one of claims 1 to 8, the first component is installed on one side along the second direction of the first body, and the second direction intersects the first direction; A coating die head having a second recess provided on one side facing the first body along the second direction of the first component, the first body including a first protrusion received in the second recess, and the first protrusion fixed to the first component.
In claim 9, it further comprises a first fixing member and at least one adjusting piece, wherein the adjusting piece is received within the second recess; A coating die head, wherein in the first direction, the first fixing member is positioned on one side facing away from the first protrusion of the first component and is used to compress the first component, and the adjusting piece is installed between the first component and the first protrusion.
In claim 9 or 10, the first component comprises a first surface facing the second die head, and the discharge port is formed between the first surface and the second die head; and the second depression extends to the first surface along the first direction; A coating die head, wherein the first protrusion includes a second surface facing the second die head, and the first surface and the second surface are horizontal.
In claim 11, the first component further comprises a first side and a second side for defining the second recess, wherein the second side is located on one side far from the second die head of the first protrusion, and the first side connects the second side and the first surface; In the second direction above, the first protrusion contacts the first side, forming a coating die head.
In any one of claims 9 to 12, a first end is provided at one end far from the first body along the second direction of the first component; A coating die head in which, along the direction away from the first main body, the cross-section perpendicular to the second direction of the first end gradually decreases.
In any one of claims 1 to 13, the first die head comprises the first components arranged along a plurality of third directions, wherein the third directions are perpendicular to the first directions; A coating die head in which the adjacent first components are in contact with and connected to each other along the third direction.
A coating die head according to any one of claims 1 to 14, wherein the surface hardness of the first component is higher than the surface hardness of the first body.
A coating die head according to any one of claims 1 to 15, wherein the surface hardness of the first component is 30HRC to 70HRC.
In any one of claims 1 to 16, the first component comprises a base body and a protective layer installed on the outer surface of the base body, and at least a portion of the protective layer is located on one side of the base body facing the second die head; A coating die head in which the surface hardness of the protective layer is higher than the surface hardness of the base body.
In claim 17, the material of the base body and the material of the first body are the same, a coating die head.
A coated die head according to claim 17 or 18, wherein the protective layer comprises a diamond-like carbon coating layer or a nanocomposite plating layer.
A coating die head according to any one of claims 1 to 19, wherein the material of the first component comprises at least one of cast stone, alumina ceramic, silicon carbide ceramic, zirconium oxide ceramic, engineering polymer plastic, wear-resistant rubber, stainless steel having a diamond-like carbon coating layer on its surface, or stainless steel having a nanocomposite plating layer on its outer surface.

Description

Coating die head and battery electrode coating device The present application relates to the field of coating processes, and in particular to a coating die head and a coating apparatus for battery electrode plates. [Cross-reference to related applications] This application claims priority to Chinese patent application 202410002121.3, filed on January 2, 2024, titled ‘Coating die head and coating device for battery electrode plate’, the entire contents of which are incorporated herein by reference. Coating is an essential process in battery production and a critical step that directly impacts various performance characteristics, such as battery capacity and lifespan. Coating refers to the uniform, continuous, or intermittent application of a prepared paste-type viscous slurry onto a substrate (aluminum foil or copper foil). Improving coating efficiency during this process has always been a key focus of industry research. The present application provides a coating die head and a coating device for battery electrode plates that can improve coating efficiency. In a first aspect, the present application provides a coating die head comprising a first die head and a second die head. The first die head comprises a first body and a first component, and the first component is detachably connected to the first body. The second die head and the first die head are installed along a first direction, and a cavity for receiving a slurry is formed between the second die head and the first body, and an outlet communicating with the cavity is formed between the first component and the second die head. Since the worn-out first component only requires removing it and installing a new one when it wears out, the downtime of the coating die head can be shortened, thereby improving coating efficiency and reducing production costs. As the worn-out first component can be repaired individually and reused, the service life of the first component is extended. In some embodiments, the coating die head further comprises a first fixing member, and the first fixing member is installed to be movable along a first direction on a first body. In the first direction, a portion of the first component is clamped between the first fixing member and the first body. The first fixing member and the first main body can fix the first component to the first main body by clamping the first component on both sides of the first direction. When the first component needs to be replaced, the first fixing member can be moved along the first direction to release the restraint of the first fixing member on the first component. Compression assembly facilitates disassembly and mounting. In some embodiments, the first fixing member and the first body are screw-connected, and the first fixing member can adjust the pressure applied to the first component by the first fixing member through rotation. Since the first component can be fastened to or unfastened to the first body by rotating the first fixing member, the disassembly and mounting of the first component can be facilitated. In some embodiments, a position-fixing recess is provided on one side facing the first fixing member along the first direction of the first component, and the first fixing member contacts the bottom surface of the position-fixing recess. A portion of the first fixing member is inserted into a position-fixing recess, which restricts the position of the first component in another direction intersecting the first direction, thereby improving the stability of the first component and improving the consistency of the coating weight. In some embodiments, a first recess is provided on one side along a second direction of the first body, and the second direction intersects the first direction. A portion of the first component is received in the first recess. When mounting the first component, the first recess can fix the position of the first component, thereby simplifying the assembly process. In some embodiments, the first body includes a first protrusion and a second protrusion installed along a first direction, the first recess is installed between the first protrusion and the second protrusion, and the first protrusion is located on one side adjacent to the second die head of the second protrusion. The coating die head further includes a first fixing member, the first fixing member is movably connected to the second protrusion along a first direction and is used to compress the first component. The first protrusion and the second protrusion can restrict the position of the first component on both sides of the first direction to improve the stability of the first component, reduce vibration of the first component, and improve consistency of the coating weight. The first fixing member can secure the first component by clamping the first component on both sides of the first protrusion. The first component can also be released by moving the first fixing member. In some embodiments, the coating die h