Lithium battery coating equipment

Abstract

The utility model discloses lithium battery coating equipment. The lithium battery coating equipment comprises a coating machine main body, the coating steel roller is arranged on the coating machine main body and is used for roll-coating first slurry on the upper surface of the pole piece passing through the lower part; the die head is arranged on the coating machine main body, a gasket assembly is arranged in the die head, a discharge port of the die head is upwards opposite to the lower part of the coating steel roller, and the die head is used for coating the lower surface of the pole piece with second slurry, and when the material is broken, the second slurry in an internal runner of the die head enables the second slurry at the discharge port to be completely stopped from being discharged by virtue of self weight; and the adjusting mechanism is arranged on the coating machine main body and is used for adjusting the position of the discharge hole of the die head relative to the coating steel roller. Due to the fact that the discharging port of the die head faces upwards, when materials are broken, second slurry in the flow channel inside the die head can completely stop discharging by means of self weight, and the edge of a second slurry layer of a battery on a pole piece is neater.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery coating, in particular to lithium battery coating equipment. Background Art

[0002] At present, the die heads of lithium battery coating equipment use two or more gaskets stacked as a gasket assembly to achieve special-shaped coating, that is, to coat a special-shaped battery slurry layer on the electrode. However, the discharge port of the die head of current lithium battery coating equipment is basically arranged in a horizontal direction. When the material needs to be cut during the coating process, it relies on negative pressure suction back. However, this horizontal arrangement and negative pressure suction back cutting technology, when applied to the die head using the gasket assembly, is difficult to accurately and effectively control the negative pressure suction back, resulting in poor suction back effect, easy tailing phenomenon, and uneven edges of the battery slurry layer on the electrode. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a coating device for lithium batteries with relatively simple material cut-off control and good effect.

[0004] The technical solution adopted by the utility model to solve the problem is:

[0005] A lithium battery coating device, comprising:

[0006] Coating machine body;

[0007] A coating steel roller is provided on the coating machine body and is used to roll-coat the first slurry on the upper surface of the electrode passing from below;

[0008] The die head is installed on the main body of the coater. It has a gasket assembly inside and the discharge port is facing upward to the bottom of the coating steel roller. It is used to coat the lower surface of the electrode with the second slurry. When the material is cut off, the second slurry in the internal flow channel relies on its own weight to stop the discharge of the second slurry at the discharge port.

[0009] The adjustment mechanism is provided on the coating machine body and is used to adjust the position of the discharge port of the die head relative to the coating steel roller.

[0010] As a further improved technical solution, the pole piece passes horizontally from directly below the coating steel roller, and the discharge port of the die head faces vertically upwards directly below the coating steel roller.

[0011] As a further improved technical solution, the adjustment mechanism includes a vertical driving member for driving the die head to move in a vertical direction.

[0012] As a further improved technical solution, the adjustment mechanism includes a flip driving member for driving the die head and the vertical driving member to rotate together.

[0013] As a further improved technical solution, the adjustment mechanism includes a horizontal driving member for driving the die head, the vertical driving member and the flip driving member to move together in a horizontal direction perpendicular to the axis direction of the coating steel roller.

[0014] As a further improved technical solution, the coating machine body includes a first bracket, the die head is slidably connected to the first bracket, and the vertical driving member is fixedly connected to the first bracket and the output end is connected to the die head.

[0015] As a further improved technical solution, the coating machine body includes a second bracket, the flip drive member is slidably connected to the second bracket and its output end is connected to the first bracket, and the horizontal drive member is fixedly connected to the second bracket and its output end is connected to the flip drive member.

[0016] As a further improved technical solution, the vertical driving member and the horizontal driving member are both cylinders or electric push rods.

[0017] As a further improved technical solution, the flip driving component is an automatic reducer or a manual reducer.

[0018] The beneficial effects of the present invention are as follows: the coating steel roller of the present invention rolls the first slurry on the upper surface of the electrode passing from below, and the die discharge port faces upward toward the bottom of the coating steel roller. When working, the coating machine body squeezes the second slurry, so that the second slurry is periodically coated on the lower surface of the electrode from the die discharge port. In the interval between two adjacent coating operations, the coating machine body stops squeezing. At this time, since the die discharge port faces upward, the second slurry in the flow channel inside the die will stop discharging due to its own weight, so that the edge of the second slurry layer of the battery on the electrode is more neat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 yes Figure 1 A cross-sectional schematic diagram in the BB direction;

[0021] Figure 3 It is a three-dimensional structural diagram of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, features and effects of the present invention. The various technical features of the present invention can be combined interchangeably without conflict.

[0023] like Figure 1 、 Figure 2 and Figure 3 The lithium battery coating equipment shown is used to coat the pole pieces of lithium batteries with slurry. Its structure includes:

[0024] The coating machine body 1, equipped with various functional components, comprises a coating steel roller 2 and a die head 3. The coating steel roller 2 is primarily used to roll-coat the upper surface of the electrode sheet passing below with the first slurry, while also preventing the electrode sheet from vibrating during transport and coating the lower surface with the second slurry. The first and second slurries differ in composition and function, and the appropriate coatings are used based on actual needs.

[0025] The die head 3 is internally provided with a gasket assembly, typically composed of two or three stacked gaskets. Furthermore, the die head 3's discharge port faces upward, toward the underside of the coating steel roller 2. This allows the second slurry to be applied to the lower surface of the electrode during operation. During the interval between coating operations, the second slurry in the die head 3's internal flow channel, under its own weight, stops discharging from the discharge port.

[0026] The coating machine body 1 is also provided with an adjustment mechanism for adjusting the position of the discharge port of the die head 3 relative to the coating steel roller 2 so that it can adapt to the coating requirements of electrodes of different thicknesses. At the same time, it also adjusts the die head 3 to a suitable position to facilitate maintenance or replacement of the gasket assembly thereon.

[0027] In one embodiment, if Figure 2 As described above, the electrode is arranged to pass horizontally from directly below the coating steel roller 2, while the discharge port of the die head 3 is vertically upward, directly facing directly below the coating steel roller 2. The vertical arrangement of the die head 3 can make full use of the gravity of the second slurry in the flow channel, so that when the material is cut off, the discharge can be stopped faster and more timely.

[0028] In one embodiment, the adjustment mechanism on the coating machine body 1 can adjust the vertical or horizontal displacement of the die head 3. Preferably, the adjustment mechanism can adjust the vertical and horizontal displacement of the die head 3 at the same time. Furthermore, the adjustment mechanism can also flip the die head 3.

[0029] In one embodiment, the adjustment mechanism includes a vertical drive member 41 to drive the die head 3 to move in the vertical direction. Figure 1 、 Figure 2 and Figure 3 As shown, the coating machine body 1 includes a first bracket 11 , and the first bracket 11 is used to mount the die head 3 so that the die head 3 can slide vertically along the first bracket 11 .

[0030] Furthermore, the vertical driving member 41 is fixedly connected to the first bracket 11 , and the output end of the vertical driving member 41 is connected to the die head 3 to push the die head 3 to move in the vertical direction.

[0031] In one embodiment, the adjustment mechanism includes a flip drive member 42 to drive the die head 3 and the vertical drive member 41 to rotate together. Figure 1 、 Figure 2 and Figure 3 As shown, the coating machine body 1 further includes a second bracket 12 for mounting the flip drive member 42 and the horizontal drive member 43 , wherein the flip drive member 42 is slidably connected to the second bracket 12 , while the horizontal drive member 43 is fixedly connected to the second bracket 12 .

[0032] The output end of the tilting drive member 42 is connected to the first bracket 11 to drive the die head 3 and the vertical drive member 41 on the first bracket 11 to rotate together. The output end of the horizontal drive member 43 is connected to the tilting drive member 42 to propel the tilting drive member 42, the die head 3 on the first bracket 11 connected to the tilting drive member 42, and the vertical drive member 41 together in a horizontal direction perpendicular to the axis of the coating steel roller 2.

[0033] In one embodiment, if Figure 1 、 Figure 2 and Figure 3 As shown, there are two vertical drive members 41, one on each side of the first bracket 11, which synchronously push the die head 3 from the left and right sides. In addition, there are also two horizontal drive members 43, one on each side of the second bracket 12, which synchronously push the flip drive member 42, the first bracket 11 and the die head 3 thereon, and the vertical drive member 41 from the left and right sides.

[0034] In the above embodiments, the vertical driving member 41 and the horizontal driving member 43 are both cylinders or electric push rods, and the tilting driving member 42 is an automatic speed reducer or a manual speed reducer.

[0035] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0037] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] It should be noted that the above is only a further explanation of the present invention in combination with the embodiments, and does not constitute a limitation on the scope of protection of the present invention. If simple modifications are made to the present technology, they are all achieved by basically the same means to achieve the purpose of the invention of the present invention, and should all fall within the scope of protection of the present invention.

Claims

1. A lithium battery coating device, characterized in that, include: Coating machine body (1); A coating steel roller (2) is provided on the coating machine body (1) and is used for rolling the first slurry onto the upper surface of the electrode passing from below; The die head (3) is provided on the coating machine body (1), and is provided with a gasket assembly inside thereof, and the discharge port is upwardly directed toward the bottom of the coating steel roller (2), and is used for coating the lower surface of the electrode with the second slurry. When the material is cut off, the second slurry in the internal flow channel thereof relies on its own weight to stop the discharge of the second slurry at the discharge port. The regulating mechanism is arranged on the coating machine body (1) and is used for adjusting the position of the discharge port of the die head (3) relative to the coating steel roller (2).

2. A lithium battery coating device according to claim 1, characterized in that: The pole piece passes horizontally from directly below the coating steel roller (2), and the discharge port of the die head (3) faces vertically upwards directly below the coating steel roller (2).

3. A lithium battery coating device according to claim 2, characterized in that: The adjustment mechanism comprises a vertical driving member (41) for driving the die head (3) to move in a vertical direction.

4. A lithium battery coating device according to claim 3, characterized in that: The adjustment mechanism includes a flip driving member (42) for driving the die head (3) and the vertical driving member (41) to rotate together.

5. The lithium battery coating device according to claim 4, characterized in that: The adjustment mechanism comprises a horizontal driving member (43) for driving the die head (3), the vertical driving member (41) and the flip driving member (42) to move together in a horizontal direction perpendicular to the axis direction of the coating steel roller (2).

6. The lithium battery coating device according to claim 5, characterized in that: The coating machine body (1) comprises a first bracket (11), the die head (3) is slidably connected to the first bracket (11), and the vertical driving member (41) is fixedly connected to the first bracket (11) and the output end is connected to the die head (3).

7. The lithium battery coating device according to claim 6, characterized in that: The coating machine body (1) includes a second bracket (12), the flip driving member (42) is slidably connected to the second bracket (12) and its output end is connected to the first bracket (11), and the horizontal driving member (43) is fixedly connected to the second bracket (12) and its output end is connected to the flip driving member (42).

8. A lithium battery coating device according to claim 5, 6 or 7, characterized in that: The vertical driving member (41) and the horizontal driving member (43) are both cylinders or electric push rods.

9. A lithium battery coating device according to claim 5, 6 or 7, characterized in that: The turning drive member (42) is an automatic speed reducer or a manual speed reducer.

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