Tab flattening plate, tab flattening device and battery winding equipment

Abstract

The utility model discloses a tab flattening plate, a tab flattening device and battery winding equipment, the tab flattening plate comprises a plate body, the plate body is provided with a flattening surface, and one side, deviating from the flattening surface, of the plate body is provided with a fool-proof part; under the condition that the pole piece is located on one side of the fool-proof part, the pole piece abuts against the fool-proof part and is broken in the winding process. According to the scheme provided by the invention, the fool-proof part is arranged on one side, deviating from the smooth surface, of the plate body, so that when the pole piece penetrates through a wrong belt, namely the pole piece is positioned on one side of the fool-proof part, the belt of the pole piece is immediately broken in the winding process, equipment is triggered to stop, winding cannot be continued to form a complete battery cell, and a worker can conveniently and quickly find the belt breakage phenomenon.

Description

Technical Field

[0001] The present application relates to the technical field of battery winding, and in particular to a tab caressing plate, a tab caressing device and a battery winding device. Background Art

[0002] During the production of pole pieces, the pole pieces are long strips and are usually transferred by rollers. During production, the pole ears need to be cut out on the width side of the pole piece. Then, during the transfer of the pole piece between the rollers, the pole ears are prone to warping or folding. The pole piece between the two rollers is in a straight strip shape. During this period, a pole ear smoothing plate needs to be set at the edge of the pole piece to smooth the pole ears at the edge of the pole piece.

[0003] During the use of the tab support plate in the related art, there is a risk that it is difficult to detect when the pole piece is damaged. Utility Model Content

[0004] In view of the above problems, the present application provides a tab caressing plate, a tab caressing device and a battery winding device, which can solve the problem that it is difficult to detect when the tab caressing plate is damaged during use.

[0005] In order to solve the above technical problems, in the first aspect, the present application proposes a tab caressing plate, comprising:

[0006] A plate body, wherein the plate body has a smoothing surface, and a fool-proof portion is provided on a side of the plate body away from the smoothing surface;

[0007] Under the condition that the pole piece is located on one side of the fool-proofing portion, the pole piece abuts against the fool-proofing portion and breaks during the winding process.

[0008] In the technical solution of the embodiment of the present application, since an anti-mistake portion is provided on the side of the plate body facing away from the smoothing surface, when the pole piece is inserted into the wrong tape, that is, the pole piece is located on the side of the anti-mistake portion, the pole piece will immediately break during the winding process, thereby triggering the equipment to shut down, and the battery cell cannot be wound any further, which makes it convenient for the staff to quickly discover the broken tape phenomenon.

[0009] In some embodiments, the fool-proofing portion includes a burr, and the burr is arranged on a side of the plate body away from the smoothing surface. In this way, when the pole piece is located on one side of the fool-proofing portion, the pole piece can be quickly broken by the burr.

[0010] In some embodiments, an introduction portion is provided on the first side of the plate body, and the angle between the introduction portion and the plate body is an acute angle. In this way, when the pole piece enters the plate body, the folded or raised pole ear can be gradually smoothed, and at the same time, it is convenient for the pole ear to enter the plate body.

[0011] In some embodiments, the tab flattening plate further includes a connecting member disposed on the second side of the plate body for connecting to a roller. In this way, the connection between the tab flattening plate and the roller is facilitated.

[0012] In some embodiments, the connecting member is provided with mounting holes along a first direction, where the first direction is the axial direction of the connecting member.

[0013] In some embodiments, the connecting member is provided with a notch along a second direction, and the notch communicates with the mounting holes so that the size of the mounting holes can be adjusted, where the second direction intersects the first direction. In this way, it is convenient to fix the connecting member to rollers with different diameters.

[0014] In some embodiments, the connecting member is provided with threaded holes along a third direction passing through the notch, where the third direction intersects the plane formed by the first direction and the second direction.

[0015] In some embodiments, the tab flattening plate further includes a fastener that cooperates with the threaded holes. In this way, the connecting member can be fixed to the roller through the fastener.

[0016] In a second aspect, the present application provides a tab flattening device, including a mounting base and a tab flattening plate as described in any one of the embodiments of the present application;

[0017] The tab flattening plate is disposed at the mounting base.

[0018] In a third aspect, the present application provides a battery winding device, including the tab flattening device as described in the embodiments of the present application.

[0019] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically describes the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the following embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0021] Figure 1 is a schematic structural diagram of an existing flattening plate;

[0022] Figure 2 is a schematic structural diagram of the tab flattening plate according to some embodiments of the present application;

[0023] Figure 3 Another schematic diagram of Figure 2 ;

[0024] Figure 4 Another schematic diagram of Figure 2 ;

[0025] Figure 5 Schematic diagram of the placement structure of the tab flattening plate in some embodiments of the present application in the winding preparation area of the battery winding device;

[0026] Figure 6 Another schematic diagram of Figure 5 ;

[0027] Figure 7 Schematic diagram of the battery winding device in some embodiments of the present application.

[0028] The reference numerals in the specific embodiments are as follows:

[0029] 10. Tab flattening plate; 101. Plate body; 1011. Anti-fooling part; 1012. Introduction part; 102. Connecting piece; 1021. Mounting hole; 1022. Notch; 1023. Threaded hole. Specific embodiments

[0030] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0033] Reference to "embodiments" in this document means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0035] In the description of the embodiments of this application, the term "plural" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0036] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0037] In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0038] Next, a detailed description of this application will be given.

[0039] During the production process of the electrode sheet, the electrode sheet is a long strip-shaped sheet body, usually transferred by a roller body. During production, tabs need to be cut out on one side of the width of the electrode sheet. Subsequently, during the transfer of the electrode sheet between the roller bodies, the tabs are prone to warping or folding. The electrode sheet between the two roller bodies is in a straight strip shape. During this period, a flattening plate needs to be set at the edge of the electrode sheet to flatten the tabs at the edge of the electrode sheet.

[0040] During the use of the existing flattening plate, when the electrode sheet passes through the middle of the passing roller and the flattening plate, at this time, the electrode sheet is in a normal working state. Since the electrode sheet is manually pulled through, when the electrode sheet is inserted in the wrong position, at this time, the electrode sheet is located on the side of the flattening plate away from the passing roller, which will cause friction between the electrode sheet and the flattening plate, resulting in damage to the electrode sheet. Since it is not easy to detect when the electrode sheet is inserted in the wrong position, this will cause lithium deposition and low capacity problems in the formed battery cell, seriously affecting the performance of the battery cell.

[0041] In order to solve the problem that when the electrode sheet is inserted in the wrong position during the use of the existing flattening plate, the electrode sheet will be damaged and it is not easy to detect, as Figure 2 shown, an embodiment of the present application provides a tab flattening plate 10. The tab flattening plate 10 includes a plate body 101. The plate body 101 has a flattening surface. An anti-fooling portion 1011 is provided on the side of the plate body 101 away from the flattening surface. Under the condition that the electrode sheet is on the side of the anti-fooling portion 1011, the electrode sheet abuts against the anti-fooling portion and breaks during the winding process.

[0042] The plate body 101 in this embodiment can be a flat plate, an arc-shaped plate, etc., and can be specifically determined according to the actual situation. This embodiment of the present specification does not limit this.

[0043] The anti-fooling portion 1011 in this embodiment can be integrally formed with the plate body 101 or can be connected to the plate body 101 by bolts, and can be specifically determined according to the actual situation. This embodiment of the present specification does not limit this.

[0044] Refer to Figure 1 as shown in Fig. (a) in, when the electrode sheet 12 passes through the middle of the passing roller 11 and the flattening plate 13, at this time, the electrode sheet 12 is in a normal working state. Refer to Fig. (b) as shown, when the electrode sheet 12 is located on the side of the flattening plate 13 away from the passing roller 11, at this time, the electrode sheet 12 is in a misinserted state. In this state, the electrode sheet 12 is still in a working state and is not easy to detect.

[0045] Refer to Figure 3 as shown, the flattening surface and the anti-fooling portion 1011 in this embodiment are located on the upper and lower sides of the plate body 101. During use, when the electrode sheet is inserted in the wrong position and the electrode sheet is on the side of the anti-fooling portion 1011, the electrode sheet will immediately break during the winding process, thereby triggering the equipment to stop and preventing the continuous winding to form a complete battery cell, which is convenient for the staff to quickly discover the breakage phenomenon.

[0046] According to some embodiments of the present application, the fool-proof portion 1011 includes a burr, which is disposed on a side of the plate body 101 away from the smoothing surface.

[0047] In this embodiment, the fool-proofing portion 1011 may also be other structures, such as a cutting piece, etc. The specific structure may be determined according to actual conditions, and this specification does not limit this.

[0048] In this embodiment, a plurality of convex thorns may be provided on the side of the plate body 101 away from the smoothing plane, so that when the pole piece is inserted into the wrong belt, the plurality of convex thorns can quickly pierce the pole piece, so that the pole piece is broken.

[0049] According to some embodiments of the present application, Figure 3 As shown, an introduction portion 1012 is provided on the first side of the plate body 101 , and an angle a between the introduction portion 1012 and the plate body 101 is an acute angle.

[0050] like Figure 3 As shown, the first side in this embodiment is the right side of the plate body 101, the introduction part 1012 smoothly transitions to the right side of the plate body 101, and the introduction part 1012 is an arc-shaped structure as a whole. Of course, it can be understood that the introduction part 1012 can also be other structures. For example: the introduction part 1012 is an inclined bending part on the right side of the plate body 101. The specific structure can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0051] In this embodiment, since an introduction portion 1012 is provided on the first side of the plate body 101 , when the electrode piece enters the plate body 101 , the introduction portion 1012 can gradually smooth the folded or raised electrode ear, and at the same time, the introduction portion 1012 can easily introduce the electrode ear into the plate body 101 .

[0052] According to some embodiments of the present application, Figure 2 or Figure 3 As shown, the tab caressing plate 10 further includes a connecting member 102, which is disposed on the second side of the plate body 101 and is used to be connected to a roller.

[0053] refer to Figure 3 As shown, the second side in this embodiment is the front side of the plate body 101, and the connecting member 102 intersects with the plane where the plate body 101 is located. For example, the connecting member 102 and the plane where the plate body 101 is located are 80°, 90°, etc. The specific angle can be determined based on actual conditions, and this specification does not limit this.

[0054] In this embodiment, the connecting member 102 may be integrally formed with the plate body 101 , or the connecting member 102 may be threadedly connected to the plate body 101 .

[0055] In this embodiment, since the connecting member 102 is provided on the plate body 101, it is convenient to connect the tab flattening plate 10 to the roller.

[0056] According to some embodiments of the present application, as Figure 2 shown, mounting holes 1021 are provided on the connecting member 102 along a first direction, where the first direction is the axial direction of the connecting member 102.

[0057] The first direction in this embodiment is the X-axis direction as in Figure 2 . Since the mounting holes 1021 are provided on the connecting member 102, when it is necessary to mount the connecting member 102 to the roller, only need to insert the roller into the corresponding mounting holes 1021, which facilitates the mounting of the connecting member 102 and the roller.

[0058] According to some embodiments of the present application, a notch 1022 is provided on the connecting member 102 along a second direction, and the notch 1022 communicates with the mounting holes 1021 so that the size of the mounting holes 1021 is adjustable, where the second direction intersects the first direction.

[0059] The second direction in this embodiment is the Y-axis direction as in Figure 2 . The angle between the Y-axis and the X-axis can be 80°, 90°, etc., and can be specifically determined according to the actual situation, and this embodiment of the specification does not limit this.

[0060] Referring to Figure 2 shown, the notch 1022 in this embodiment divides the connecting member 102 into two semi-circular rings, and the two semi-circular rings enclose to form the mounting holes 1021. The two semi-circular rings can approach or move away from each other under the action of an external force. When the two semi-circular rings move away from each other, the diameter of the mounting holes 1021 becomes larger, and vice versa, the diameter of the mounting holes 1021 becomes smaller. In this way, it is convenient to fix the connecting member 102 to rollers with different diameters.

[0061] According to some embodiments of the present application, as Figure 4 shown, threaded holes 1023 penetrating the notch 1022 are provided on the connecting member 102 along a third direction, where the third direction intersects the plane formed by the first direction and the second direction.

[0062] The third direction in this embodiment is the Z-axis direction as in Figure 2 , where the X-axis, Y-axis, and Z-axis are perpendicular to each other. Of course, it can be understood that the angles between the X-axis, Y-axis, and Z-axis can also be other angles, which can be specifically determined according to the actual situation, and this embodiment of the specification does not limit this.

[0063] In this embodiment, since the threaded hole 1023 is provided on the connecting member 102, when the connecting member 102 is sleeved on the roller, the connecting member 102 can be fastened by passing an external bolt through the threaded hole 1023, thereby ensuring the stability of the connection of the connecting member 102.

[0064] According to some embodiments of the present application, the tab support plate further includes a fastener, which cooperates with the threaded hole 1023 .

[0065] The fasteners in this embodiment can be bolts or the like, and the specific ones can be determined according to actual conditions, and this specification embodiment does not limit this.

[0066] When in use, the two semicircular rings on the connecting member 102 can be connected together after the fastener passes through the threaded hole 1023.

[0067] The present application also provides a tab caressing device, comprising a mounting seat and a tab caressing plate as in any one of the embodiments of the present application, wherein the tab caressing plate is disposed on the mounting seat.

[0068] The tab caressing plate in this embodiment can be integrally formed with the mounting seat, or the mounting holes on the connecting piece on the tab caressing plate are correspondingly assembled on the mounting shaft on the mounting seat. The specific details can be determined according to actual conditions and are not limited in this embodiment of the specification.

[0069] The specific structure of the tab caressing plate in this embodiment refers to the above embodiment. Since the tab caressing device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0070] like Figure 7 As shown, the present application also provides a battery winding device, including a tab-carrying device as in the embodiment of the present application.

[0071] In this embodiment, a pole-carrying ear device is installed at each roller of the battery winding device. Figure 7 The tab caressing plate 10 installed at the roller ⑥ is used as an example to illustrate that the mounting seat on the tab caressing plate 10 is threadedly connected to the battery winding device, combined with Figure 1 As shown, the side of the plate body 101 on the mounting seat with the smoothing surface faces the roller ⑥, and the side of the plate body 101 with the smoothing surface is located above the roller ⑥, there is a gap between the plate body 101 and the roller ⑥, and the pole piece is located between the roller ⑥ and the side of the plate body 101 with the smoothing surface. After the pole piece passes through the roller ⑥ and the plate body 101, the pole ear at the edge of the pole piece can be smoothed under the action of the smoothing surface on the plate body 101.

[0072] When the pole piece is inserted incorrectly, that is, when the pole piece is located on the side of the plate body 101 away from the flattening plane, since the anti-fooling portion 1011 is provided on the side of the plate body 101 away from the flattening plane, in this way, the pole piece will abut against the anti-fooling portion 1011 and break during the winding process, thereby triggering the equipment to stop and preventing the continuous winding to form a complete battery cell, which is convenient for the staff to quickly discover the tape breakage phenomenon.

[0073] In this embodiment, when a pair of pole pieces pass through the battery winding equipment, the two pole ear flattening plates 10 can be Figure 5 or Figure 6 structurally arranged to be staggered from each other, without interfering with the winding machine and being smoothly installed.

[0074] The specific structure of the pole ear flattening device in this embodiment refers to the above-mentioned embodiment. Since all the technical solutions of the above-mentioned all embodiments are adopted in this battery winding equipment, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0075] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An ear tab flattening plate, characterized in that, include: A plate body (101), wherein the plate body (101) has a smoothing surface, and a fool-proof portion (1011) is provided on a side of the plate body (101) away from the smoothing surface; Under the condition that the pole piece is located on one side of the fool-proofing portion (1011), the pole piece abuts against the fool-proofing portion and breaks during the winding process.

2. The tab flattening plate according to claim 1, wherein, The fool-proof portion (1011) comprises a convex thorn, and the convex thorn is arranged on a side of the plate body (101) away from the smoothing surface.

3. The tab flattening plate according to claim 1, wherein An introduction portion (1012) is provided on the first side of the plate body (101), and an angle between the introduction portion (1012) and the plate body (101) is an acute angle.

4. The tab flattening plate according to any one of claims 1-3, characterized in that, The tab caressing plate further comprises a connecting piece (102), wherein the connecting piece (102) is arranged on the second side of the plate body (101) and is used for connecting with a roller.

5. The tab flattening plate according to claim 4, wherein, The connecting member (102) is provided with a mounting hole (1021) along a first direction, wherein the first direction is the axial direction of the connecting member (102).

6. The tab flattening plate according to claim 5, wherein, A notch (1022) is provided on the connecting member (102) along a second direction, and the notch (1022) is connected to the mounting hole (1021) so that the size of the mounting hole (1021) is adjustable, wherein the second direction intersects with the first direction.

7. The tab flattening plate according to claim 6, wherein, A threaded hole (1023) penetrating the notch (1022) is provided on the connecting member (102) along a third direction, wherein the third direction intersects with a plane formed by the first direction and the second direction.

8. The tab flattening plate according to claim 7, wherein The tab support plate also includes a fastener, which cooperates with the threaded hole (1023).

9. A pole ear touching device, characterized in that, It comprises a mounting seat and a tab caressing plate as claimed in any one of claims 1 to 8; The tab caressing plate is arranged on the mounting seat.

10. A battery winding device, characterized in that, It comprises the apicophone device as claimed in claim 9.

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