CN214416864U - Coating gasket and coating equipment - Google Patents

Abstract

The utility model relates to the technical field of battery manufacturing equipment, in particular to a coating gasket and coating equipment; the coating gasket comprises a gasket body and a flow baffle plate; the gasket body is provided with a gasket opening facing to a first direction; the flow baffle is arranged in the gasket opening and is provided with a connecting end part and a free end part, and the connecting end part is connected with the gasket body; the flow baffle is provided with a reducing area, the reducing area extends from the connecting end to the free end and penetrates through the free end, and the thickness of the reducing area is smaller than that of the gasket body; wherein at least a portion of the relief zone corresponds to a position of the feed cavity of the coating die when the coating shim is assembled to the coating die. Through the structure design, the utility model provides a coating gasket is when installing in the coating die head, can not lead to the pressure release difficulty because of hiding the feeding cavity, the utility model discloses can flow through the regional thick liquids that supply that subducts that keeps off the class board, avoid the inhomogeneous problem of areal density of flash and coating back pole piece.

Description

Coating gasket and coating equipment

Technical Field

The utility model relates to a battery manufacture equipment technical field especially relates to a coating gasket and coating equipment.

Background

An important process in the production process of the lithium battery is coating the surface of the pole piece, and the quality of the coating effect of the pole piece determines the difficulty degree, the quality and the production efficiency of the subsequent production process of the lithium battery. The currently common coating process is extrusion coating, the extrusion coated core component being a coated mat. Some existing coating gaskets are provided with flow baffles in gasket openings, however, when the coating gasket is assembled in a coating die head, the flow baffles are positioned above a feed inlet of a feed chamber, when coating equipment runs, the feed inlet is covered by the flow baffles, pressure is high, pressure is difficult to release, and flash, namely material overflows from a gap of the equipment or the surface density of a coating area of a coated pole piece is uneven.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an at least defect of above-mentioned prior art is overcome to a main aim at, provides a feed inlet pressure release that does not influence the coating die head to the difficult coating gasket that produces the inhomogeneous problem of surface density of flash or coating back pole piece.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to one aspect of the present invention, a coated gasket is provided; wherein, the coating gasket comprises a gasket body and a flow baffle plate; the gasket body is provided with a gasket opening facing a first direction; the flow baffle is arranged in the gasket opening and is provided with a connecting end part and a free end part, and the connecting end part is connected with the gasket body; the flow baffle is provided with a reducing area, the reducing area extends from the connecting end to the free end and penetrates through the free end, and the thickness of the reducing area is smaller than that of the gasket body; wherein at least a portion of the relief zone corresponds to a position of a feed cavity of the coating die when the coating shim is assembled to the coating die.

According to the above technical scheme, the utility model provides an advantage and positive effect of coating gasket lie in:

the utility model provides a coating gasket contains the gasket body and keeps off and flows the board, keeps off to flow the board and is provided with and subducts the region, subducts regional at least part and is located the connection tip of connecting in the gasket body that keeps off and flows the board, subducts regional free tip that extends to fender and flows the board and runs through free tip, and the thickness that subducts the region is less than the thickness of gasket body. Through the structure design, the utility model provides a coating gasket is when installing in the coating die head, can not lead to the pressure release difficulty because of hiding the feeding cavity, the utility model discloses can flow through the regional thick liquids that supply that subducts that keeps off the class board, avoid the inhomogeneous problem of areal density of flash and coating back pole piece.

Another primary object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a coating apparatus having the above-mentioned coating pad.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to an aspect of the present invention, there is provided a coating apparatus; wherein, coating equipment contains the utility model provides a coating gasket.

According to the above technical scheme, the utility model provides an advantage and positive effect of coating equipment lie in:

the utility model provides a coating equipment is through adopting the utility model provides a coating gasket can not lead to the pressure release difficulty because of the fender stream board of coating gasket covers the feeding cavity, the utility model discloses can flow through the regional thick liquids that supply that subducts that keeps off stream board, avoid the inhomogeneous problem of surface density of flash and coating back pole piece.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a schematic diagram illustrating the construction of a coated gasket according to an exemplary embodiment;

FIG. 2 is a side view of the coated gasket shown in FIG. 1;

FIG. 3 is a partial cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a partial cross-sectional view of a coated gasket shown in accordance with another exemplary embodiment;

FIG. 5 is a partial cross-sectional view of a coated gasket shown in accordance with another exemplary embodiment;

FIG. 6 is a partial cross-sectional view of a coated gasket shown in accordance with another exemplary embodiment;

FIG. 7 is a schematic illustration of a coated shim according to another exemplary embodiment;

FIG. 8 is a side view of the coated shim shown in FIG. 7;

FIG. 9 is a partial cross-sectional view taken along line B-B of FIG. 7;

FIG. 10 is a schematic illustration of a coated shim according to another exemplary embodiment;

FIG. 11 is a side view of the coated shim shown in FIG. 10;

FIG. 12 is a side view of a coated shim according to another exemplary embodiment;

FIG. 13 is a schematic illustration of a coated shim according to another exemplary embodiment;

FIG. 14 is a partial cross-sectional view taken along line C-C of FIG. 13;

FIG. 15 is a schematic illustration of a coated shim according to another exemplary embodiment;

fig. 16 is a partial cross-sectional view taken along line D-D in fig. 15.

The reference numerals are explained below:

100. a gasket body;

110. a gasket opening;

200. a flow baffle plate;

201. a connecting end portion;

202. a free end portion;

210. a subtraction zone;

211. a first sub-region;

212. a second sub-region;

213. a third sub-region;

220. a drainage groove;

230. a blocking region;

240. an overflow aperture;

250. a leveling area;

d 0-d8. thickness;

G. a gap;

l, connecting the lips;

x. a first direction;

y. a second direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures to fall within the scope of the invention.

Example one coating pad

Referring to fig. 1, a schematic diagram of a coated gasket according to the present invention is representatively illustrated. In this exemplary embodiment, the present invention provides a coating pad that is exemplified by a coating apparatus applied to the surface of a battery foil. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the inventive concepts described herein to other types of coating equipment or other processes, and such changes are within the scope of the principles of the present invention.

As shown in fig. 1, in the present embodiment, the coating pad of the present invention includes a pad body 100 and a baffle plate 200. Referring to fig. 2 and 3 in combination, a side view of the coated gasket is representatively illustrated in fig. 2; a partial cross-sectional view taken along line a-a of fig. 1 is representatively illustrated in fig. 3. The structure, connection and functional relationship of the main components of the coated gasket according to the present invention will be described in detail with reference to the drawings.

As shown in fig. 1 to 3, in the present embodiment, the gasket body 100 has the gasket opening 110 facing the first direction X, that is, the opening direction of the gasket opening 110 is the first direction X. The flow baffle 200 is disposed in the gasket opening 110, and the flow baffle 200 has a connection end 201 and a free end 202, and the connection end 201 of the flow baffle 200 is connected to the gasket body 100. On this basis, the choke plate 200 is provided with a relief area 210, the relief area 210 extends from the connecting end 201 to the free end 202 and penetrates the free end 202, and the thickness of the relief area 210 is smaller than the thickness d0 of the gasket body. Accordingly, when the utility model provides a coating gasket is installed in the coating die head, subduct at least a part of regional 210 and the position of the feeding chamber of coating die head corresponding. Through the structure design, the utility model provides a coating gasket is when installing in the coating die head, can not lead to the pressure release difficulty because of hiding the feeding cavity, the utility model discloses can flow through the regional 210 that subduct that keep off and flow board 200 supplies the thick liquids to flow, avoids the inhomogeneous problem of areal density of flash and pole piece.

Alternatively, as shown in fig. 1 to 3, in the present embodiment, the abatement region 210 of the baffle plate 200 may have three sub-regions, and the three sub-regions are sequentially arranged along the extending direction of the baffle plate 200. For convenience of distinction and understanding, the three sub-regions are defined as a first sub-region 211, a second sub-region 212, and a third sub-region 213 in this specification. At least part of the first sub-region 211 is located at the connection end 201, the third sub-region 213 intersects the free end 202, and the second sub-region 212 is located between the first sub-region 211 and the third sub-region 213. On the basis of the structural design in which the thickness of the abatement zone 210 is less than the thickness d0 of the gasket body 100, the thickness d2 of the second sub-zone 212 is less than the thickness d1 of the first sub-zone 211 and greater than the thickness d3 of the third sub-zone 213. Through above-mentioned structural design, three subregion all can realize the drainage to thick liquids, distinguishes the subregion that sets up different thickness and can avoid whole fender flow board 200 thickness to be too thin and influence structural strength (for example produce structural deformation), also can set up the different thickness of subregion simultaneously and reach the middle effect of thinning of difference.

In other embodiments, the abatement zone 210 of the flow baffle 200 may also include other numbers of sub-zones, and when the abatement zone 210 includes two or more sub-zones, the sub-zones are sequentially disposed along the extending direction (e.g., the first direction in the present embodiment) of the flow baffle 200. And at least part of one of the sub-areas is located at the connection end 201, and the other sub-area extends through the free end 202. On this basis, of any two sub-regions of the abatement zone 210, the thickness of the sub-region relatively close to the connection end 201 is greater than the thickness of the sub-region relatively far from the connection end 201, for example, the thickness d1 of the first sub-region 211 in the present embodiment is greater than the thickness d2 of the second sub-region 212, and the thickness d2 of the second sub-region 212 is greater than the thickness d3 of the third sub-region 213. In other words, in some embodiments, when the abatement region 210 of the baffle plate 200 comprises a plurality of sub-regions connected in series along the extension direction of the baffle plate 200, the thickness of the sub-regions may decrease in the direction from the connection end 201 to the free end 202.

Further, as shown in fig. 3, based on the structural design that the abatement region 210 of the baffle plate 200 includes three sub-regions, in the present embodiment, the thickness d1 of the first sub-region 211 may be 70% to 80%, for example, 70%, 72%, 75%, 80%, and the like, of the thickness d0 of the gasket body 100. In other embodiments, the ratio of the thickness d1 of the first sub-region 211 to the thickness d0 of the gasket body 100 may also be less than 70%, or may be greater than 80%, for example, 65%, 90%, etc., which is not limited to the embodiment.

Further, as shown in fig. 3, based on the structural design that the abatement region 210 of the baffle 200 includes three sub-regions, in the present embodiment, the thickness d2 of the second sub-region 212 may be 45% to 55%, for example, 45%, 48%, 50%, 55%, etc., of the thickness d0 of the gasket body 100. In other embodiments, the ratio of the thickness d2 of the second sub-region 212 to the thickness d0 of the gasket body 100 may also be less than 45%, or may be greater than 55%, for example, 40%, 60%, etc., which is not limited to the embodiment.

Further, as shown in fig. 3, based on the structural design that the abatement region 210 of the baffle 200 includes three sub-regions, in the present embodiment, the thickness d3 of the third sub-region 213 may be 20% to 30%, for example, 20%, 25%, 28%, 30%, etc., of the thickness d0 of the gasket body 100. In other embodiments, the ratio of the thickness d3 of the third sub-region 213 to the thickness d0 of the gasket body 100 may also be less than 20%, or may be greater than 30%, for example, 15%, 35%, and the like, which is not limited to the embodiment.

Alternatively, as shown in fig. 1, in the present embodiment, the baffle plate 200 may extend substantially equal to the depth of the gasket opening 110 in the first direction X. In other words, the free end 202 of the baffle plate 200 can extend to a position flush with the lip line L of the gasket opening 110, i.e., the baffle plate 200 can extend to the lip of the gasket opening 110. Through the structural design, the flow baffle plate 200 can guide slurry more accurately, thinning in the middle of coating can be achieved, the surface density of the pole piece in the thinning area is good in straightness, the surface density is easy to control, the thinning depth fluctuation can be guaranteed to be small, and the thinning width can be accurately controlled.

Alternatively, as shown in fig. 1, in the present embodiment, the baffle plate 200 may extend along the first direction X, and the connection end 201 may be connected to an intermediate position of the gasket body 100 corresponding to the gasket opening 110. In other embodiments, the flow baffle 200 may also extend along other directions, and the connection position between the connection end 201 of the flow baffle 200 and the gasket body 100 may also be flexibly adjusted, which is not limited to this embodiment.

Example two coated gasket

Based on the above detailed description of the first embodiment of the coated gasket proposed by the present invention, a second embodiment of the coated gasket will be described below with reference to fig. 4. Wherein a coated gasket embodying the principles of the present invention is representatively illustrated in fig. 4, in partial cross-sectional view in this second embodiment, and approximately corresponding to the cross-sectional view of fig. 1 of the first embodiment taken along line a-a. The structural design of this second embodiment, which differs from the first embodiment described above, will be explained below with reference to the drawings described above.

As shown in fig. 4, in the present embodiment, the abatement zone 210 of the baffle 200 may include two sub-zones, which are successively arranged in sequence along the extending direction of the baffle. At least part of one of the sub-regions is located at the connecting end 201, and the other sub-region extends through the free end 202. On this basis, the thickness of the sub-region located at the connection end 201 is greater than the thickness of the sub-region located at the free end 202, based on the structural design in which the thickness of the subtraction zone 210 is less than the thickness d0 of the gasket body 100.

Example III of the coated gasket

Based on the above detailed description of the first embodiment of the coated gasket proposed by the present invention, a third embodiment of the coated gasket will be described below with reference to fig. 5. Wherein a coated gasket embodying the principles of the present invention is representatively illustrated in fig. 5, in partial cross-sectional view in this third embodiment, and approximately corresponding to the cross-sectional view of fig. 1 of the first embodiment taken along line a-a. The structural design of this third embodiment, which differs from the first embodiment described above, will be explained below with reference to the drawings described above.

As shown in fig. 5, in the present embodiment, the thickness of the abatement zone 210 may decrease from the connection end 201 to the free end 202 in the extending direction of the baffle 200, and the thickness of the baffle 200 decreases from the connection end 201 to the free end 202 because the abatement zone 210 penetrates through the connection end 201 and the free end 202 of the baffle 200. That is, the thickness d4 of the connecting end portion 201 is greater than the thickness d5 of the free end portion 202.

Further, as shown in fig. 5, in the present embodiment, the abatement zone 210 may be substantially bevel-shaped. In other words, the thickness of the abatement zone 210 at each location is a smooth transition, and the rate of change of the thickness of the abatement zone 210 from the connected end 201 to the free end 202 is kept constant. Through above-mentioned structural design, be favorable to the steady outflow of thick liquids, can improve the uniformity of the areal density of the pole piece in the thin district when coating, can prevent to cut thin district by thin too simultaneously, coating gasket non-deformable simultaneously, uniformity preferred.

Example four coated gasket

Based on the above detailed description of the third embodiment of the coated gasket proposed by the present invention, a fourth embodiment of the coated gasket will be described below with reference to fig. 6. Wherein a coated gasket embodying the principles of the present invention is representatively illustrated in fig. 6, in partial cross-section in this fourth embodiment, and approximately corresponding to the cross-sectional view of fig. 1 of the first embodiment taken along line a-a. The structural design of this fourth embodiment, which differs from the third embodiment described above, will be explained below with reference to the drawings described above.

As shown in fig. 6, in the present embodiment, the abatement zone 210 may be substantially arcuate. In other words, the thickness at each location of the abatement zone 210 is a smooth transition, and the rate of change of the thickness at each location of the abatement zone 210 from the connected end 201 to the free end 202 is not exactly the same or is not identical.

Coated gasket example five

Based on the above detailed description of the first embodiment of the coated gasket proposed by the present invention, a fifth embodiment of the coated gasket will be described below with reference to fig. 7 to 9. Wherein, fig. 7 representatively shows a schematic structural view of a coated gasket proposed by the present invention in a fifth embodiment; a side view of the coated shim is representatively illustrated in fig. 8; representatively illustrated in fig. 9 is a partial cross-sectional view taken along line B-B of fig. 7. The structural design of this fifth embodiment, which differs from the first embodiment described above, will be explained below with reference to the above-mentioned drawings.

As shown in fig. 7 to 9, in the present embodiment, the flow baffle 200 may be provided with a drainage groove 220 penetrating the connection end 201 and the free end 202, and one end of the drainage groove 220 penetrates the free end 202, so that the drainage groove 220 is the subtraction area 210. On this basis, the thickness of the baffle 200 minus the depth of the drainage slots 220 is the thickness d6 of the abatement zone 210. Furthermore, the portions of the flow baffle 200 that form the walls of the flow directing grooves 220, i.e., the portions of the flow baffle 200 that are not provided with flow directing grooves 220, are blocking regions 230, and the blocking regions 230 include two regions that are located on two sides of the flow directing grooves 220. In addition, an overflow hole 240 is formed at a position of the bottom of the drainage groove 220 at the connection end 201, and the overflow hole 240 penetrates the baffle 200 in the thickness direction. Through the structural design, the overflow holes 240 and the drainage grooves 220 can drain slurry from the lower side of the flow channel, so that the situation that the surface density of pole pieces on two sides is high due to the fact that the flow baffle 200 blocks the slurry flowing to two sides fast is reduced, and the consistency of the surface density of the pole pieces is improved. Specifically, the overflow hole 240 can allow the slurry to overflow from the hole, so as to realize pressure relief, and the slurry flows in the drainage groove 220, so that on one hand, the pressure relief can be realized, on the other hand, the amount of the extracted fluid is small, and the effect of thinning the middle part can be realized.

Further, as shown in fig. 7 to 9, in the present embodiment, a leveling area 250 may be disposed on a side of the free end 202 of the baffle plate 200 away from the connection end 201, a thickness d7 of the leveling area 250 may be smaller than a thickness d0 of the gasket body, and one end of the drainage groove 220 located at the free end 202 is open, so that a groove cavity of the drainage groove 220 is communicated with the leveling area 250. Through the structural design, the slurry from the two sides of the drainage groove 220 and the leveling area 250 are gathered to the leveling area 250 together to form a low-slurry depression area, and finally the low-slurry depression area is coated on a foil to form middle thinning, and meanwhile, the stability of the size of the thinning area can be controlled.

Further, as shown in fig. 7, when the baffle plate 200 extends along the first direction, unlike the structure design in which the free end 202 of the baffle plate 200 extends to a position flush with the lip of the gasket opening 110, in the present embodiment, the free end 202 of the baffle plate 200 may have a gap G with the lip of the gasket opening 110. In other words, the free end 202 of the baffle 200 and the lip line L of the gasket opening 110 may have a gap G therebetween.

Further, as shown in fig. 8 and 9, unlike the structural design of the baffle plate 200 of the first to fourth embodiments in which the subtractive region 210 is disposed on all of the surface of the baffle plate 200, in the present embodiment, the subtractive region 210 of the baffle plate 200 does not occupy all of the surface thereof, that is, the thickness d8 of the other regions (e.g., the blocking regions 230) of the baffle plate 200 except for the flow-guiding grooves 220 (i.e., the subtractive region 210) may be equal to the thickness d0 of the gasket body 100.

Further, in this embodiment, the thickness d7 of the leveling region 250 may be approximately equal to the thickness d6 of the relief region 210.

Example six of coating shim

Based on the above detailed description of the first embodiment of the coated gasket proposed by the present invention, a sixth embodiment of the coated gasket will be described below with reference to fig. 10 and 11. Wherein, fig. 10 representatively shows a schematic structural view of a coated gasket proposed by the present invention in a sixth embodiment; a side view of the coated shim is representatively illustrated in fig. 11. The structural design of this sixth embodiment, which differs from the first embodiment described above, will be explained below with reference to the drawings described above.

As shown in fig. 10 and 11, in the present embodiment, the abatement zone 210 may extend only to one side of the flow baffle 200 in a width direction (e.g., the second direction Y) of the flow baffle 200, wherein the width direction may be understood as a direction perpendicular to the extending direction (e.g., the first direction X) of the flow baffle 200 and parallel to the gasket body 100.

Further, as shown in fig. 11, based on the structural design of the abatement region 210, in the present embodiment, the cross section of the baffle plate 200 in the width direction may be substantially in a step-like structure.

Example seven coated gasket

Based on the above detailed description of the sixth embodiment of the coated gasket proposed by the present invention, a seventh embodiment of the coated gasket will be described below with reference to fig. 12. A side view of the coated shim is representatively illustrated in fig. 12. The structural design of this seventh embodiment, which differs from the sixth embodiment described above, will be explained below with reference to the above-mentioned drawings.

As shown in fig. 12, in the present embodiment, the cross section of the baffle plate 200 in the width direction may be substantially an inclined plane structure. In other embodiments, when the abatement region 210 extends only to one side of the flow baffle 200 in the width direction, the flow baffle 200 may have another cross-section in the width direction.

Coating shim example eight

Based on the above detailed description of the first embodiment of the coated gasket proposed by the present invention, an eighth embodiment of the coated gasket will be described below with reference to fig. 13 and 14. A side view of the coated shim is representatively illustrated in fig. 12. The structural design of this eighth embodiment, which differs from the first embodiment described above, will be explained below with reference to the drawings described above.

As shown in fig. 12, in the present embodiment, the abatement zones 210 may extend to both sides of the flow baffle 200 in the width direction (e.g., the second direction Y) of the flow baffle 200.

Further, as shown in fig. 11, based on the above-mentioned structural design of the abatement zone 210, in the present embodiment, the abatement zone 210 may penetrate both the connection end 201 and the free end 202 of the baffle 200. In other words, the abatement region 210 may cover the entire surface of the baffle plate 200.

Example nine coated gasket

Based on the above detailed description of the eighth embodiment of the coated gasket proposed by the present invention, a ninth embodiment of the coated gasket will be described below with reference to fig. 15 and 16. A side view of the coated shim is representatively illustrated in fig. 12. The structural design of this ninth embodiment, which differs from the eighth embodiment described above, will be explained below with reference to the above-mentioned drawings.

As shown in fig. 15 and 16, in this embodiment, the abatement zone 210 may extend only through the free end 202 of the baffle 200.

It should be noted herein that the coated mats illustrated in the drawings and described in the present specification are but a few examples of the many types of coated mats that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any of the details or any of the components of the coated gasket shown in the drawings or described in the specification.

For example, in various embodiments according to the design concept of the coating gasket of the present invention, the flow baffle and the gasket body may be but not limited to be of an integral structure, and the connection relationship between the two may also be welding, bonding, connecting member connection, etc.

To sum up, the utility model provides a coating gasket contains the gasket body and keeps off and flows the board, keeps off to flow the board and is provided with and subducts the region, subducts regional at least part and is located to keep off the connection tip of connecting in the gasket body that flows the board, subducts regional free tip that extends to fender and flows the board and runs through free tip, and the thickness that subducts the region is less than the thickness of gasket body. Through the structure design, the utility model provides a coating gasket is when installing in the coating die head, can not lead to the pressure release difficulty because of hiding the feeding cavity, the utility model discloses can flow through the regional thick liquids that supply that subducts that keeps off the flow board, avoid the inhomogeneous problem of areal density of flash and pole piece.

Coating apparatus examples

Based on the above detailed description of a plurality of exemplary embodiments of the coating pad proposed by the present invention, an exemplary embodiment of the coating apparatus proposed by the present invention will be described below.

In this embodiment, the coating apparatus provided by the present invention includes the coating pad provided by the present invention and described in detail in the above embodiments. Through the structure design, the utility model provides a coating equipment can realize forming the coating appearance that cuts thin in the middle of on the pole piece foil, is favorable to improving the surface density uniformity of the pole piece of pole piece surface coating technology.

It should be noted herein that the coating apparatus shown in the drawings and described in the present specification are only a few examples of the many types of coating apparatuses that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the coating apparatus shown in the drawings or described in the present specification.

To sum up, the utility model provides a coating equipment is through adopting the utility model provides a coating gasket can not lead to the pressure release difficulty because of the fender stream board of coating gasket covers the feeding cavity, the utility model discloses can flow through the regional thick liquids that supply that subducts that keeps off stream board, avoid the inhomogeneous problem of surface density of flash and pole piece.

Exemplary embodiments of a coating mat and a coating apparatus as set forth in the present invention are described and/or illustrated in detail above. The embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

While the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.

Claims (10)

1. A coated gasket, comprising:

a gasket body having a gasket opening facing a first direction;

the flow baffle is arranged in the gasket opening and is provided with a connecting end part and a free end part, and the connecting end part is connected with the gasket body;

the flow baffle is provided with a reducing area, the reducing area extends from the connecting end to the free end and penetrates through the free end, and the thickness of the reducing area is smaller than that of the gasket body;

wherein at least a portion of the relief zone corresponds to a position of a feed cavity of the coating die when the coating shim is assembled to the coating die.

2. The coated gasket of claim 1 wherein the abatement zone comprises at least two sub-abatement zones arranged sequentially along the direction of extension of the baffle.

3. The coated gasket of claim 2 wherein each of the sub relief areas has a decreasing thickness in a direction from the attaching end portion to the free end portion.

4. The coated gasket of claim 3 wherein each of the sub-trim regions is of uniform thickness such that the trim regions are in a stepped configuration; or the thickness of each sub-reducing region is gradually reduced in the direction from the connecting end part to the free end part, so that the reducing region has a multi-section arc-surface-shaped structure or an inclined-plane-shaped structure.

5. The coated gasket of claim 1 wherein the thickness of the reduced area decreases in a direction from the attached end to the free end such that the reduced area has an arcuate configuration or a beveled configuration.

6. The coated gasket of claim 1, wherein the relief area extends to a lip of the gasket opening; and/or, the other direction which is perpendicular to the extending direction of the flow baffle and parallel to the gasket body is a second direction, and the abatement area extends to at least one side edge of the flow baffle in the second direction.

7. The coated gasket of claim 1 wherein the baffle is provided with a flow directing groove through the connecting end and the free end, the flow directing groove being the reduced area and the portion of the baffle forming the wall of the flow directing groove being the blocking area.

8. The coating gasket of claim 7 wherein the bottom of the flow guide slot is provided with an overflow hole at a position corresponding to the position of the feed cavity of the coating die, the overflow hole penetrating the flow baffle in the thickness direction.

9. The coated gasket as recited in claim 7, wherein a leveling area is disposed on a side of the free end of the flow baffle away from the connection end, the thickness of the leveling area is smaller than that of the gasket body, and one end of the drainage groove located at the free end is open, so that a groove cavity of the drainage groove is communicated with the leveling area; and/or the flow baffle extends along the first direction, and a gap is formed between the free end of the flow baffle and the lip of the gasket opening.

10. A coating apparatus comprising the coating pad of any one of claims 1 to 9.

Images