Pole piece coating device

Abstract

The utility model provides a pole piece coating device. The pole piece coating device comprises a gasket assembly which comprises a first gasket and a second gasket, and the first gasket and the second gasket are configured to limit the size of a pole piece in a first direction; the adjusting assembly comprises a first adjusting piece and a second adjusting piece, the first adjusting piece is connected with the first gasket, and the second adjusting piece is connected with the second gasket; the substrate assembly comprises a containing cavity extending in the first direction, and the first gasket and the second gasket are located in the containing cavity; the first adjusting piece and the second adjusting piece are configured to drive the first gasket and the second gasket to move in the first direction correspondingly so as to adjust the distance between the first gasket and the second gasket in the first direction. According to the pole piece coating device, in the process of producing pole pieces of different sizes, gaskets of different sizes do not need to be replaced repeatedly, different coating breadths can be obtained only by controlling the adjusting assembly, and the material cost and the time cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery pole piece production, in particular to a pole piece coating device. Background Art

[0002] Among the existing different battery cell products, the sizes of the pole pieces contained in different battery cell products are also different. Therefore, in the actual production process of pole pieces, pole pieces of different models require a gasket of a specific size to coat the required width of the pole piece. If pole pieces of different widths need to be produced, gaskets of different sizes need to be replaced repeatedly. The replacement process is extremely cumbersome, and the production of gaskets of different sizes also consumes material costs and time costs. Utility Model Content

[0003] The embodiments of the present utility model provide a pole piece coating device, which can solve the above-mentioned problems.

[0004] The embodiment of the utility model provides a pole piece coating device, which comprises:

[0005] A gasket assembly, comprising a first gasket and a second gasket, the first gasket and the second gasket being configured to define a size of the pole piece in a first direction;

[0006] An adjustment assembly includes a first adjustment member and a second adjustment member, wherein the first adjustment member is connected to the first gasket, and the second adjustment member is connected to the second gasket; and

[0007] A substrate assembly, the substrate assembly comprising a receiving cavity extending along a first direction, wherein a first gasket and a second gasket are located in the receiving cavity;

[0008] The first adjusting member and the second adjusting member are configured to respectively drive the first gasket and the second gasket to move in the first direction so as to adjust the distance between the first gasket and the second gasket in the first direction.

[0009] In one embodiment, the substrate assembly is provided with a first through hole and a second through hole which are opposite to each other in a first direction;

[0010] The first through hole and the second through hole are respectively connected to the accommodating cavity and extend in the first direction;

[0011] One end of the first adjusting member away from the first gasket passes through the first through hole, and one end of the second adjusting member away from the second gasket passes through the second through hole.

[0012] In one embodiment, a plurality of injection holes are provided on the substrate assembly, and the plurality of injection holes extend in a second direction perpendicular to the first direction and are arranged at intervals along the first direction; the injection holes are connected to the accommodating cavity, one end of the first gasket and the second gasket are in contact with the bottom wall of the accommodating cavity, and the injection holes are configured to inject electrode material to form a pole piece.

[0013] In one embodiment, the substrate assembly includes a first substrate and a second substrate;

[0014] The first substrate and the second substrate are arranged opposite to each other in a third direction perpendicular to the first direction and intersecting the second direction. The first substrate is located on the second substrate, and the accommodating cavity is located on both the first substrate and the second substrate.

[0015] In one embodiment, the first gasket and the second gasket are both provided with a recess, the recess extends in the first direction, and the recess is communicated with the accommodating cavity;

[0016] The opening of the concave portion on the first gasket is opposite to the opening of the concave portion on the second gasket.

[0017] In one embodiment, the first through hole is provided with a first through hole thread, and the second through hole is provided with a second through hole thread.

[0018] In one embodiment, the first adjusting member is threadedly connected to the first through hole;

[0019] The second adjusting member is threadedly connected to the second through hole.

[0020] In one embodiment, the first adjusting member and the second adjusting member both include a connecting portion and a knob portion, the knob portion is connected to one end of the connecting portion, the other end of the connecting portion is connected to the first gasket or the second gasket, and the knob portion protrudes from the substrate assembly.

[0021] In one embodiment, the first substrate and / or the second substrate has scales thereon, and the scales are located on the surface of the first substrate and / or the second substrate away from the injection hole.

[0022] In one embodiment, one end of the accommodating cavity away from the injection hole passes through the surfaces of the first substrate and the second substrate away from the injection hole.

[0023] The utility model provides a pole piece coating device, which controls the adjustment component to change the distance between the gasket components, and finally obtains different coating widths required for pole piece production without replacing gaskets of different sizes, thereby greatly simplifying the process, reducing the time cost required for the replacement process, and also reducing the material cost required for using gaskets of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1This is a schematic diagram of the structure of a pole piece coating device provided by an embodiment of the utility model;

[0026] Figure 2 A schematic cross-sectional view of a pole piece coating device structure provided by an embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a pole piece coating device provided by an embodiment of the utility model;

[0028] Figure 4 A schematic diagram of the structure of a pole piece coating device provided in an embodiment of the utility model;

[0029] Figure 5 It is a schematic diagram of the structure of the pole piece coating device provided by an embodiment of the utility model;

[0030] Figure 6 A schematic diagram of a connection structure between an adjustment assembly and a gasket assembly provided in an embodiment of the utility model;

[0031] Explanation of the reference numerals: 1000, pole piece coating device; 1010, gasket assembly; 1011, first gasket; 1012, second gasket; 1020, adjustment assembly; 1021, first adjustment member; 1022, second adjustment member; 1030, substrate assembly; 1031, first through hole; 1032, second through hole; 1033, injection hole; 1034, first substrate; 1035, second substrate; 1040, accommodating cavity; 1050, recess; 1060, connecting portion; 1070, knob portion. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a pole piece coating device provided in an embodiment of the utility model is shown in FIG. Figure 2A schematic cross-sectional view of the structure of a pole piece coating device provided for an embodiment of the utility model. The pole piece coating device 1000 includes: a gasket assembly 1010, an adjustment assembly 1020 and a substrate assembly 1030, wherein the gasket assembly 1010 includes a first gasket 1011 and a second gasket 1012, and the first gasket 1011 and the second gasket 1012 are configured to limit the size of the pole piece in a first direction. The adjustment assembly 1020 includes a first adjustment member 1021 and a second adjustment member 1022, and the first adjustment member 1021 is connected to the first gasket 1011 in the gasket assembly 1010, and the second adjustment member 1022 is connected to the second gasket 1012 in the gasket assembly 1010. The substrate assembly 1030 includes a receiving cavity 1040 extending along the first direction, and the first gasket 1011 and the second gasket 1012 in the gasket assembly 1010 are located in the receiving cavity 1040.

[0034] Among them, the first adjustment member 1021 and the second adjustment member 1022 in the adjustment component 1020 are configured to respectively drive the first gasket 1011 and the second gasket 1012 in the gasket component 1010 to move in the first direction, so as to adjust the distance between the first gasket 1011 and the second gasket 1012 in the first direction. In this embodiment, the adjustment component 1020 is connected to the gasket component 1010, and the distance between the first gasket 1011 and the second gasket 1012 in the first direction in the adjustment component 1020 is controlled to obtain different coating widths required for different pole pieces. Compared with the prior art in which different coating widths are obtained by replacing gaskets of different sizes, only one size of gasket component 1010 is required in this embodiment, and different coating widths can be obtained by only controlling the adjustment component 1020. The present application reduces the time cost required to replace gaskets of different sizes, and also reduces the material cost required to make or obtain gaskets of different sizes. It should be noted that the first direction described in the embodiment of the utility model is Figure 1 The X direction in .

[0035] In some embodiments, see Figure 2 , Figure 4 and Figure 5 , Figure 4It is a schematic diagram of a battery structure provided by an embodiment of the utility model. The substrate assembly 1030 is provided with a first through hole 1031 and a second through hole 1032 which are relatively positioned in the first direction. The first through hole 1031 and the second through hole 1032 are respectively connected to the accommodating cavity 1040 and extend in the first direction. One end of the first adjusting member 1021 away from the first gasket 1011 passes through the first through hole 1031, and the other end of the first adjusting member 1021 is connected to the first gasket 1011. One end of the second adjusting member 1022 away from the second gasket 1012 passes through the second through hole 1032, and the other end of the second adjusting member 1022 is connected to the second gasket 1012. In this embodiment, a first through hole 1031 and a second through hole 1032 are arranged on the substrate assembly 1030, which are relatively positioned and extend in the first direction. The first adjusting member 1021 and the second adjusting member 1022 pass through the first through hole 1031 and the second through hole 1032 respectively, and are connected to the first gasket 1011 and the second gasket 1012 respectively, so that the first adjusting member 1021 and the second adjusting member 1022 can be fixed in the first direction for adjustment, thereby avoiding the problem of inaccurate electrode coating position caused by the first gasket 1011 and the second gasket 1012 not being at the same height, thereby ensuring the accuracy of the structure of the present application scheme for electrode coating.

[0036] In some embodiments, see Figure 2 and Figure 6 , Figure 6A schematic diagram of the connection structure between an adjustment component and a gasket component is provided for an embodiment of the utility model, wherein a plurality of injection holes 1033 are provided on a substrate component 1030, wherein the plurality of injection holes 1033 extend in a second direction perpendicular to the first direction and are arranged at intervals along the first direction, and the injection holes 1033 are connected to a accommodating cavity 1040, and one end of a first gasket 1011 and a second gasket 1012 in the first direction contacts a bottom wall of the accommodating cavity 1040, and the injection holes 1033 are configured to inject electrode material for forming a pole piece. On the one hand, this embodiment sets a plurality of injection holes 1033 on the substrate assembly 1030, and the injection holes 1033 are connected to the accommodating cavity 1040, so that after adjusting the distance between the first gasket 1011 and the second gasket 1012 in the first direction, the electrode material for coating the electrode piece can enter through one end of the injection hole 1033 in the second direction, and be output from the end where the injection hole 1033 is connected to the accommodating cavity 1040 to the accommodating cavity 1040 between the first gasket 1011 and the second gasket 1012 for coating the electrode piece. On the other hand, this embodiment prevents the electrode material entering the accommodating cavity 1040 between the first gasket 1011 and the second gasket 1012 from entering other areas by contacting one end of the first gasket 1011 and the second gasket 1012 with the bottom wall of the accommodating cavity 1040, thereby ensuring the accuracy of the structure of the present application scheme for electrode coating. It should be noted that the second direction described in the embodiments of the present utility model are Figure 1 in the Y direction.

[0037] In some embodiments, see Figure 1 , the substrate assembly 1030 includes a first substrate 1034 and a second substrate 1035, wherein the first substrate 1034 and the second substrate 1035 are arranged relative to each other in a third direction perpendicular to the first direction and intersecting the second direction, the first substrate 1034 is located on the second substrate 1035, and the accommodating cavity 1040 is located on both the first substrate 1034 and the second substrate 1035. Specifically, in the third direction, the first substrate 1034 and the second substrate 1035 are arranged relative to each other, and the accommodating cavity 1040 is located between the first substrate 1034 and the second substrate 1035. The gasket assembly 1010 is located in the accommodating cavity 1040, so that the gasket assembly 1010 can move in the accommodating cavity 1040 in the first direction to adjust the distance between the first gasket 1011 and the second gasket 1012. It should be noted that the third direction described in the embodiments of the present utility model is Figure 1 The Z direction in .

[0038] In some embodiments, see Figure 2 and Figure 6, the first gasket 1011 and the second gasket 1012 are both provided with a recess 1050, and the recess 1050 extends in the first direction, the recess 1050 is connected to the accommodating cavity 1040, and the opening of the recess 1050 on the first gasket 1011 is opposite to the opening of the recess 1050 on the second gasket 1012. In this embodiment, by providing the recess 1050 on the first gasket 1011 and the second gasket 1012, on the one hand, the provision of the recess 1050 can increase the contact area between the electrode coating gasket and the electrode material, which helps the ions in the electrode material to diffuse and transfer to the electrode surface better, thereby improving the reaction rate and power density of the battery. On the other hand, the provision of the recess 1050 can increase the contact area and mechanical anchoring force between the electrode coating and the gasket. When the grooves on the two gaskets are facing each other, the electrode coating can fill the grooves and form a tight bond between the two gaskets, which helps prevent the electrode coating from peeling, falling off or structural deformation during the charge and discharge process, and improves the stability and cycle life of the battery. At the same time, the setting of the grooves can change the shape of the electrode coating gasket, so that the pressure applied when assembling the battery is more evenly distributed over the entire electrode surface. When the grooves on the two gaskets are facing each other, through appropriate design, the pressure can be evenly applied between the electrode coating and the electrolyte, reducing stress concentration and reducing the risk of cracking and damage to the electrode coating.

[0039] In some embodiments, the first through hole 1031 is provided with a first through hole 1031 thread (not shown in the figure), and the second through hole 1032 is provided with a second through hole 1032 thread (not shown in the figure).

[0040] Further, in some embodiments, the first adjusting member 1021 is threadedly connected to the first through hole 1031, and the second adjusting member 1022 is threadedly connected to the second through hole 1032. In this embodiment, by threading the first adjusting member 1021 to the first through hole 1031 and the second adjusting member 1022 to the second through hole 1032, the first adjusting member 1021 or the second adjusting member 1022 is prevented from sliding in the first direction due to the smooth contact surface between the adjusting component 1020 and the through hole, which ultimately leads to the problem that the coating width does not meet expectations, thereby ensuring the accuracy of the structure of the present application scheme for pole piece coating.

[0041] In some embodiments, see Figure 6 , Figure 6A schematic diagram of the structure of an adjustment assembly 1020 provided in an embodiment of the utility model, the first adjustment member 1021 and the second adjustment member 1022 both include a connecting portion 1060 and a knob portion 1070, the knob portion 1070 is connected to one end of the connecting portion 1060, the other end of the connecting portion 1060 is connected to the first gasket 1011 or the second gasket 1012, and the knob portion 1070 protrudes from the substrate assembly 1030. In this embodiment, the adjustment member is configured to include the connecting portion 1060 and the knob portion 1070, and the gasket assembly 1010 can be conveniently controlled by the knob portion 1070 to adjust the distance between the first gasket 1011 and the second gasket 1012 in the first direction. It should be noted that the above examples are only for the purpose of more clearly and comprehensively demonstrating the core ideas and methods of the present invention so as to better understand the implementation methods of the present invention, and are by no means intended to limit the scope of the present invention. Any obvious modifications or equivalent substitutions made without departing from the essence of the present invention should be deemed to be within the scope of protection of the present invention.

[0042] In some embodiments, the first substrate 1034 and / or the second substrate 1035 have scales (not shown in the figure), and the scales are located on the surface of the first substrate 1034 and / or the second substrate 1035 away from the injection hole 1033 and on one side of the accommodating cavity 1040.

[0043] Specifically, in the first case, any one of the first substrate 1034 and the second substrate 1035 has a scale, while the other substrate does not have a scale, and the scale is located on the surface of the substrate away from the injection hole 1033 and on one side of the accommodating cavity 1040. In the second case, both the first substrate 1034 and the second substrate 1035 have scales, and the scales are located on the surfaces of the first substrate 1034 and the second substrate 1035 away from the injection hole 1033 and on one side of the accommodating cavity 1040. Compared with the second case, the first case can reduce the process of making the substrate and improve the efficiency, and the second case, compared with the first case, by comparing the scale on the first substrate 1034 with the scale on the second substrate 1035, if the values ​​displayed by the scales of the two are consistent, it means that it is normal, and if the values ​​displayed by the scales of the two are inconsistent, it means that the structure of the electrode coating device 1000 may be unstable due to long-term use, so as to prompt the user to replace it, thereby ensuring the accuracy of the structure of the present application scheme for electrode coating. It should be noted that the position of the above-mentioned scale is only to more clearly and comprehensively demonstrate the core ideas and methods of the utility model, so as to better understand the implementation methods of the utility model, and it is by no means to limit the scope of the utility model. Any obvious modifications or equivalent substitutions made without departing from the essence of the idea of ​​the utility model should be deemed to be within the scope of protection of the utility model.

[0044] In some embodiments, one end of the accommodating cavity 1040 away from the injection hole 1033 penetrates the surface of the first substrate 1034 and the second substrate 1035 away from the injection hole 1033. This embodiment uses this structure to allow the end of the accommodating cavity 1040 away from the injection hole 1033 to be opposite to the pole piece to coat the pole piece.

[0045] The utility model provides a pole piece coating device, which controls the adjustment component to change the distance between the gasket components, and finally obtains different coating widths required for pole piece production without replacing gaskets of different sizes, thereby greatly simplifying the process, reducing the time cost required for the replacement process, and also reducing the material cost required for using gaskets of different sizes.

[0046] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A pole piece coating device, characterized in that: include: A gasket assembly, comprising a first gasket and a second gasket, wherein the first gasket and the second gasket are configured to limit the size of the pole piece in a first direction; An adjustment assembly, comprising a first adjustment member and a second adjustment member, wherein the first adjustment member is connected to the first gasket, and the second adjustment member is connected to the second gasket; and A substrate assembly, the substrate assembly comprising a receiving cavity extending along a first direction, the first gasket and the second gasket being located in the receiving cavity; The first adjusting member and the second adjusting member are configured to respectively drive the first gasket and the second gasket to move in the first direction so as to adjust the distance between the first gasket and the second gasket in the first direction.

2. The pole piece coating device according to claim 1, characterized in that: The substrate assembly is provided with a first through hole and a second through hole which are opposite to each other in a first direction; The first through hole and the second through hole are respectively connected to the accommodating cavity and extend in the first direction; One end of the first adjusting member away from the first gasket passes through the first through hole, and one end of the second adjusting member away from the second gasket passes through the second through hole.

3. The pole piece coating device according to claim 1, characterized in that: The substrate assembly is provided with a plurality of injection holes, which extend in a second direction perpendicular to the first direction and are arranged at intervals along the first direction; the injection holes are connected to the accommodating cavity, one end of the first gasket and the second gasket are in contact with the bottom wall of the accommodating cavity, and the injection holes are configured to inject electrode material for forming a pole piece.

4. The pole piece coating device according to claim 3, characterized in that: The substrate assembly includes a first substrate and a second substrate; The first substrate and the second substrate are disposed opposite to each other in a third direction perpendicular to the first direction and intersecting the second direction. The first substrate is located on the second substrate, and the accommodation cavity is located on both the first substrate and the second substrate.

5. The pole piece coating device according to claim 2 or 3, characterized in that: The first gasket and the second gasket are both provided with a recessed portion, the recessed portion extends in a first direction, and the recessed portion is communicated with the accommodating cavity; The opening of the recess on the first gasket is opposite to the opening of the recess on the second gasket.

6. The pole piece coating device according to claim 2, characterized in that: The first through hole is provided with a first through hole thread, and the second through hole is provided with a second through hole thread.

7. The pole piece coating device according to claim 6, characterized in that: The first adjusting member is threadedly connected to the first through hole; The second adjusting member is threadedly connected to the second through hole.

8. The pole piece coating device according to claim 1, characterized in that: The first adjusting member and the second adjusting member each include a connecting portion and a knob portion, the knob portion is connected to one end of the connecting portion, the other end of the connecting portion is connected to the first gasket or the second gasket, and the knob portion protrudes from the substrate assembly.

9. The pole piece coating device according to claim 4, characterized in that: The first substrate and / or the second substrate has scales thereon, and the scales are located on a surface of the first substrate and / or the second substrate away from the injection hole.

10. The pole piece coating device according to claim 4, characterized in that: One end of the accommodation cavity away from the injection hole penetrates through surfaces of the first substrate and the second substrate away from the injection hole.

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