Lithium battery coating die head and lithium battery coating equipment

Abstract

The embodiment of the utility model relates to a lithium battery coating die head and lithium battery coating equipment. The lithium battery coating die head comprises an extrusion die head assembly, and a first cavity and a second cavity are formed in the extrusion die head assembly; the first feeding channel is communicated with the first cavity; the second feeding channel is communicated with the second cavity; wherein the slurry is output through the discharge port of the first cavity and / or the discharge port of the second cavity, and the first cavity is isolated from the second cavity. By means of the arrangement, slurry can be conveyed to the first feeding channel, and the slurry is output from the discharging opening of the first cavity. And / or the slurry is conveyed to the second feeding channel, and the slurry is output from the discharging port of the second cavity. The first cavity and the second cavity are isolated from each other, and it is guaranteed that the first cavity and the second cavity are each provided with a feeding channel independently, so that the first cavity and the second cavity output slurry according to set positions, and the requirements of various coating processes are met. Additional subsequent processing equipment is not needed, raw materials are saved, and equipment cost and material cost are reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of lithium battery coating, and in particular to a lithium battery coating die head and a lithium battery coating device. Background Art

[0002] With current technology, lithium battery coating equipment is unable to independently control multiple coating lines, resulting in the coating stage being unable to meet the process requirements of special-shaped coatings, leading to the addition of subsequent processing equipment, and wasting raw materials, high processing costs, and low efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, the first aspect of the utility model provides a lithium battery coating die head.

[0005] A second aspect of the utility model provides a lithium battery coating device.

[0006] In view of this, according to the first aspect of the embodiment of the present application, a lithium battery coating die head is proposed, comprising:

[0007] An extrusion die assembly, wherein the extrusion die assembly is formed with a first cavity and a second cavity;

[0008] A first feed channel connected to the first cavity;

[0009] A second feed channel connected to the second cavity;

[0010] The slurry is output through the discharge port of the first cavity and / or the discharge port of the second cavity, and the first cavity and the second cavity are isolated from each other.

[0011] In a feasible implementation, it also includes:

[0012] The gasket is arranged between the first cavity and the second cavity, and is used to isolate the first cavity from the second cavity.

[0013] In a feasible implementation manner, the shape of the gasket is used to match the shape of the pole piece.

[0014] In a feasible implementation manner, a flow channel is formed at the gasket corresponding to the discharge port of the second cavity, for discharging the slurry through the flow channel.

[0015] In a feasible embodiment, along the radial direction of the second feed channel, the thickness of the gasket corresponding to the flow channel is 0.6 mm to 2 mm thinner than the thickness at other parts of the gasket.

[0016] In a feasible implementation, the flow channel is provided with reinforcing ribs along the flow direction of the slurry.

[0017] In a feasible embodiment, the extrusion die assembly comprises:

[0018] upper mold;

[0019] The lower mold is extrusion-matched with the upper mold, the gasket is arranged between the upper mold and the lower mold, and the first cavity and the second cavity are opened at one end of the lower mold facing the upper mold.

[0020] In a feasible implementation, it also includes:

[0021] The fixing member is used to fix the upper mold and the lower mold.

[0022] In a feasible embodiment, the above-mentioned fixing part is a fixing bolt, the above-mentioned upper mold is provided with a first threaded hole, the above-mentioned lower mold is provided with a second threaded hole, the positions of the above-mentioned first threaded hole and the above-mentioned second threaded hole correspond to each other, and the above-mentioned fixing bolt is screwed into the above-mentioned first threaded hole and the above-mentioned second threaded hole in sequence.

[0023] In view of this, according to a second aspect of an embodiment of the present application, a lithium battery coating device is proposed, comprising:

[0024] A lithium battery coating die as described in any one of the above technical solutions.

[0025] Compared with the prior art, the utility model includes at least the following beneficial effects: the lithium battery coating die provided in the embodiment of the present application is provided with an extrusion die assembly, a first feed channel and a second feed channel. Among them, a first cavity and a second cavity are formed in the extrusion die assembly, and the first feed channel is connected to the first cavity, and the second feed channel is connected to the second cavity. The slurry can be delivered to the first feed channel, and the slurry is output from the discharge port of the first cavity. The slurry can be delivered to the second feed channel, and the slurry is output from the discharge port of the second cavity. The first cavity and the second cavity are isolated from each other, ensuring that the first feed channel of the first cavity and the second feed channel of the second cavity are independently set, and the slurry can be output according to the set position through the first cavity and the second cavity, which can meet the needs of various coating processes. There is no need to add additional subsequent processing equipment, saving raw materials, reducing equipment costs and material costs, and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 A schematic structural diagram of a lithium battery coating die head according to an embodiment of the present application;

[0028] Figure 2 for Figure 1 A schematic cross-sectional view of a lithium battery coating die shown;

[0029] Figure 3 A schematic structural diagram of a gasket according to an embodiment of the present application;

[0030] Figure 4 A schematic diagram of a lithium battery coating die coating a pole piece according to an embodiment provided in the present application.

[0031] in, Figures 1 to 4 The corresponding relationship between the reference numerals and the component names is as follows:

[0032] 100 lithium battery coating die, 110 extrusion die assembly, 111 first cavity, 112 discharge port of the first cavity, 113 second cavity, 114 discharge port of the second cavity, 115 upper die, 116 lower die, 120 first feed channel, 130 second feed channel, 140 gasket, 141 flow channel, 142 reinforcing rib, 150 first threaded hole, 200 foil. DETAILED DESCRIPTION

[0033] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0034] like Figures 1 to 4 As shown, according to the first aspect of an embodiment of the present application, a lithium battery coating die 100 is proposed, comprising: an extrusion die assembly 110, wherein the extrusion die assembly 110 is formed with a first cavity 111 and a second cavity 113; a first feed channel 120, connected to the first cavity 111; a second feed channel 130, connected to the second cavity 113; wherein the slurry is output through the discharge port of the first cavity and / or the discharge port 114 of the second cavity, and the first cavity 111 and the second cavity 113 are isolated.

[0035] It can be understood that the lithium battery coating die 100 provided in the embodiment of the present application is provided with an extrusion die assembly 110, a first feed channel 120 and a second feed channel 130. Among them, a first cavity 111 and a second cavity 113 are formed in the extrusion die assembly 110, and the first feed channel 120 is connected to the first cavity 111, and the second feed channel 130 is connected to the second cavity 113. The slurry can be delivered to the first feed channel 120, and the slurry is output from the discharge port of the first cavity. The slurry can be delivered to the second feed channel 130, and the slurry is output from the discharge port 114 of the second cavity. The first cavity 111 and the second cavity 113 are isolated from each other, ensuring that the first feed channel 120 of the first cavity 111 and the second feed channel 130 of the second cavity 113 are independently set, and the slurry can be output according to the set position through the first cavity 111 and the second cavity 113, which can meet the needs of various coating processes. There is no need to add additional subsequent processing equipment, which saves raw materials, reduces equipment costs and material costs, and improves processing efficiency.

[0036] For example, the first cavity 111 and the second cavity 113 may be arranged at positions according to coating process requirements. Figure 2 As shown, the first cavity 111 is located in front of the second cavity 113 .

[0037] In some examples, such as Figure 2 and Figure 3 As shown, the lithium battery coating die head 100 further includes: a gasket 140, which is disposed between the first cavity 111 and the second cavity 113, and is used to isolate the first cavity 111 from the second cavity 113.

[0038] It is understandable that the lithium battery coating die head 100 may also be provided with a gasket 140. Specifically, the gasket 140 may be provided between the first cavity 111 and the second cavity 113, so that the first cavity 111 and the second cavity 113 are completely isolated by the gasket 140, and the slurry outputted through the discharge port of the first cavity and the discharge port 114 of the second cavity are ensured to be completely independently outputted, thereby realizing the multi-cavity independent control of the lithium battery coating die head 100, and meeting the needs of various coating processes. No additional subsequent processing equipment is required, which saves raw materials, reduces equipment costs and material costs, and improves processing efficiency.

[0039] In some examples, such as Figure 3 As shown, the shape of the gasket 140 is used to match the shape of the pole piece.

[0040] It is understandable that the shape of the gasket 140 can be determined according to the selected coating process and the shape of the pole piece, so as to ensure that after the gasket 140 is assembled, the slurry can be output as set according to the limitation of the gasket 140 to achieve a special-shaped coated pole piece. Figure 4 As shown, the shape of the gasket 140 can be determined according to the shape of the slurry coated on the foil 200. Thus, the gasket 140 guides the output shape of the slurry output through the outlet of the first cavity 111 and the output shape of the slurry output through the outlet of the second cavity 113.

[0041] In some examples, such as Figure 3 As shown, a flow channel 141 is formed at the gasket 140 corresponding to the discharge port 114 of the second cavity, and is used to discharge the slurry through the flow channel 141 .

[0042] It can be understood that the gasket 140 can be formed with a flow channel 141 at the position corresponding to the discharge port 114 of the second cavity to ensure that when the gasket 140 is assembled between the first cavity and the second cavity, the slurry output from the discharge port of the second cavity can be output through the flow channel 141, ensuring that the slurry in the second cavity can flow out independently.

[0043] In some examples, along the radial direction of the second feed channel 130 , the thickness of the gasket 140 corresponding to the flow channel 141 is 0.6 mm to 2 mm thinner than the thickness of the gasket 140 at other locations.

[0044] It is understandable that the gasket 140 can be processed by milling or other processing methods to form the flow channel 141. Specifically, the thickness of the gasket 140 corresponding to the flow channel 141 is 0.6mm to 2mm thinner than the thickness of the rest of the gasket 140, ensuring that the slurry in the second cavity can flow out independently through the flow channel 141.

[0045] In some examples, such as Figure 3 As shown, the flow channel 141 is provided with reinforcing ribs 142 along the flow direction of the slurry.

[0046] It is understandable that the gasket 140 at the flow channel 141 may be provided with a reinforcing rib 142. Specifically, the setting direction of the reinforcing rib 142 is consistent with the flow direction of the slurry at the flow channel 141. Since the thickness of the gasket 140 at the flow channel 141 is reduced, the structural strength of the gasket 140 corresponding to the flow channel 141 can be improved by providing the reinforcing rib 142, so as to avoid deformation of the flow channel 141 and improve reliability.

[0047] In some examples, such as Figure 2 As shown, the extrusion die head assembly 110 includes: an upper die 115; a lower die 116, the lower die 116 and the upper die 115 are extrusion-fitted, the gasket 140 is arranged between the upper die 115 and the lower die 116, and the first cavity 111 and the second cavity 113 are opened at one end of the lower die 116 facing the upper die 115.

[0048] It is understandable that the extrusion die assembly 110 may be provided with an upper die 115 and a lower die 116. The upper die 115 may be located above the lower die 116, the gasket 140 is located between the upper die 115 and the lower die 116, and the first cavity 111 and the second cavity 113 are both opened at one end of the lower die 116 facing the upper die 115. The gasket 140 is placed between the upper die 115 and the lower die 116, and the upper die 115 and the lower die 116 are mutually extruded and matched to ensure that the first cavity 111 and the second cavity 113 are completely isolated by the gasket 140 to ensure reliability.

[0049] In some examples, such as Figure 2 As shown, the lithium battery coating die head 100 further includes: a fixing member for fixing the upper die 115 and the lower die 116 .

[0050] It is understandable that the lithium battery coating die head 100 may also be provided with a fixing member. Specifically, the upper die 115 and the lower die 116 may be fixed by the fixing member to ensure that the upper die 115 and the lower die 116 can provide a continuous and stable pressing force to the gasket 140, thereby improving reliability.

[0051] In some examples, such as Figure 2 As shown, the fixing member is a fixing bolt, the upper mold 115 is provided with a first threaded hole 150, the lower mold 116 is provided with a second threaded hole, the positions of the first threaded hole 150 and the second threaded hole correspond to each other, and the fixing bolt is screwed into the first threaded hole 150 and the second threaded hole in sequence.

[0052] It is understandable that the fixing member may be a fixing bolt. Specifically, along the radial direction of the second feed channel 130, the upper mold 115 may be provided with a first threaded hole 150, and the lower mold 116 may be provided with a second threaded hole, and the positions of the first threaded hole 150 and the second threaded hole correspond to each other. In this way, after the upper mold 115 and the lower mold 116 are assembled, the fixing bolts may be screwed into the first threaded hole 150 and the second threaded hole in sequence, so that the upper mold 115 is fixed to the lower mold 116. And by adjusting the fixing bolts, the upper mold 115 and the lower mold 116 can provide a stable and continuous pressing force on the gasket 140.

[0053] According to a second aspect of an embodiment of the present application, a lithium battery coating device is proposed, comprising: a lithium battery coating die head 100 as described in any one of the above technical solutions.

[0054] It is understandable that the lithium battery coating equipment may be provided with a conveying roller, which can convey the foil 200, and the conveying roller is located in front of the output end of the lithium battery coating die 100. Through the action of the gasket 140, the slurry output through the output port of the first cavity 111 and the output port of the second cavity 113 can be independently output to the foil 200, and through the shape of the gasket 140, the shape required by the coating process can be coated to achieve special-shaped coating. No additional subsequent processing equipment is required, which saves raw materials, reduces equipment cost and material cost, and improves processing efficiency.

[0055] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0056] 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 orientation, and therefore, cannot be understood as a limitation on the present invention.

[0057] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lithium battery coating die head, characterized in that: include: an extrusion die assembly, the extrusion die assembly forming a first cavity and a second cavity; a first feed channel, connected to the first cavity; a second feed channel, connected to the second cavity; The slurry is output through the discharge port of the first cavity and / or the discharge port of the second cavity, and the first cavity and the second cavity are isolated from each other.

2. The lithium battery coating die head according to claim 1, characterized in that: Also includes: A gasket is disposed between the first cavity and the second cavity, and is used to isolate the first cavity from the second cavity.

3. The lithium battery coating die head according to claim 2, characterized in that: The shape of the gasket is used to match the shape of the pole piece.

4. The lithium battery coating die head according to claim 3, characterized in that: The gasket is formed with a flow channel at the outlet of the second cavity corresponding to the outlet of the second cavity, which is used to output the slurry through the flow channel.

5. The lithium battery coating die head according to claim 4, characterized in that: Along the radial direction of the second feed channel, the thickness of the gasket corresponding to the flow channel is 0.6 mm to 2 mm thinner than the thickness at other parts of the gasket.

6. The lithium battery coating die head according to claim 5, characterized in that: The flow channel is provided with reinforcing ribs along the flow direction of the slurry.

7. The lithium battery coating die head according to claim 2, characterized in that: The extrusion die assembly comprises: upper mold; A lower mold is extruded and matched with the upper mold, the gasket is arranged between the upper mold and the lower mold, and the first cavity and the second cavity are opened at one end of the lower mold facing the upper mold.

8. The lithium battery coating die head according to claim 7, characterized in that: Also includes: A fixing member is used to fix the upper mold and the lower mold.

9. The lithium battery coating die head according to claim 8, characterized in that: The fixing member is a fixing bolt, the upper mold is provided with a first threaded hole, the lower mold is provided with a second threaded hole, the positions of the first threaded hole and the second threaded hole correspond to each other, and the fixing bolt is screwed into the first threaded hole and the second threaded hole in sequence.

10. A lithium battery coating device, characterized in that: include: A lithium battery coating die as claimed in any one of claims 1 to 9.

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