Anti-folding structure of tab

Abstract

The utility model provides a tab anti-folding structure, and relates to the technical field of battery production equipment, the tab anti-folding structure mainly comprises a smoothing and blowing mechanism and a rolling mechanism, the smoothing and blowing mechanism and the rolling mechanism are arranged on two different transmission rollers in tandem, and a transmitted pole piece firstly passes through the smoothing and blowing mechanism and then passes through the rolling mechanism; the flattening and blowing mechanism is used for flattening and blowing the tabs and the rolling mechanism is used for rolling the tabs when the pole pieces with the tabs pass through the transmission rollers, that is, the flattening and blowing mechanism and the rolling mechanism are used for enabling the transmitted tabs to achieve the purpose of preventing turnover through the flattening and blowing mechanism and the rolling mechanism, especially for large-size tabs, the yield of cylindrical batteries is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production equipment technical field especially is related to a pole lug anti -folding structure. BACKGROUND

[0002] The existing battery cell is generally rolled by a cell winding machine, and the cell winding machine forms a battery cell by laminating, winding and pasting a termination adhesive according to a certain order of a positive pole piece, a negative pole piece and a diaphragm.

[0003] When the pole piece is wound, many mechanisms of the cell winding machine need to be matched, for example, the wound pole piece is unfolded through a unwinding mechanism; the dust and debris attached to the pole piece are removed through a dust removal mechanism to ensure the quality of the rolled battery cell; the pole piece and the diaphragm are wound through a winding mechanism; the tension of the pole piece in the winding process is adjusted through a tension control mechanism to ensure the roundness of the wound battery cell; the position of the moving pole piece is corrected through a pole piece correction mechanism to ensure the alignment of the wound battery cell; after the fixed-length winding of the pole piece and the diaphragm is completed, the termination adhesive is pasted to the wound battery cell through a glue pasting mechanism, and the like.

[0004] However, the length of the pole lug of the cylindrical battery is generally small after laser cutting, generally 3mm-5mm, and after the long-pole-lug process of the cell appears, the length of the pole lug is generally 8mm-10mm. The pole lug will be folded on the original winding equipment, which greatly reduces the yield. SUMMARY

[0005] Therefore, the purpose of the utility model is to provide a pole lug anti-folding structure to solve the technical problem that the pole lug in the prior art is folded in the winding process due to the increase in size, which reduces the yield.

[0006] In order to achieve the above purpose, the utility model provides a pole lug anti-folding structure, which comprises a smoothing and blowing mechanism and a rolling mechanism arranged on a transmission roller, the smoothing and blowing mechanism and the rolling mechanism are arranged on two different transmission rollers in front and back, when the pole piece with the pole lug passes through the transmission roller, the smoothing and blowing mechanism is used for smoothing and blowing the pole lug, and the rolling mechanism is used for rolling the pole lug.

[0007] Optionally, the smoothing and blowing mechanism comprises a connecting assembly, a smoothing plate and a blowing block, the connecting assembly is used for being installed on the transmission roller, the smoothing plate and the blowing block are arranged on the connecting assembly at the same time, and the smoothing plate and the blowing block are arranged on opposite sides of the pole lug.

[0008] Optionally, the smoothing plate is arranged along the radial direction of the transmission roller.

[0009] Optionally, the smoothing plate comprises a flat plate part and an inclined part, the inclined part is arranged on both sides of the flat plate part and is inclined towards the direction away from the transmission roller.

[0010] Optionally, the blowing block is provided with a blowing hole and a gas supply hole, the blowing hole is communicated with the gas supply hole through an internal gas path.

[0011] Optionally, the connecting assembly comprises a clamping block, a first connecting plate, a second connecting plate and a third connecting plate, the clamping block is arranged on the transmission roller, the first connecting plate is arranged on the clamping block, the second connecting plate and the third connecting plate are arranged on the first connecting plate at the same time, the smoothing plate is arranged on the second connecting plate, and the blowing block is arranged on the third connecting plate.

[0012] Optionally, the position of the clamping block clamped on the transmission roller can be changed.

[0013] Optionally, the rolling mechanism comprises a support seat, an axle seat and a pressure roller, the support seat is installed on one side of the pole piece rolling mechanism, the axle seat is arranged below the support seat through a connecting column, and the pressure roller is rotatably arranged in the axle seat.

[0014] Optionally, the connecting column is a hollow column, and a compression spring is arranged in the connecting column, and the compression spring is installed on the axle seat.

[0015] Optionally, the cross section of the axle seat is in a U-shaped structure with an opening downward, and an axle is arranged in the axle seat, and the pressure roller is rotatably arranged on the axle.

[0016] The pole lug anti-folding structure has the following technical effects:

[0017] The pole lug anti-folding structure mainly comprises a smoothing and blowing mechanism and a rolling mechanism, the smoothing and blowing mechanism and the rolling mechanism are arranged on two different transmission rollers in front and back, the transmission pole piece first passes through the smoothing and blowing mechanism and then passes through the rolling mechanism, when the pole piece with a pole lug passes through the transmission roller, the smoothing and blowing mechanism is used for smoothing and blowing the pole lug, and the rolling mechanism is used for rolling the pole lug, that is, the transmission pole lug reaches the anti-folding purpose through the smoothing and blowing mechanism and the rolling mechanism, and especially for large-size pole lugs, the yield of the cylindrical battery is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0019] Figure 1 is a structural schematic view of a preferred embodiment of the tab anti-overturning structure of the utility model;

[0020] Figure 2 is Figure 1 is a three-dimensional structural schematic view of the smoothing and blowing mechanism of the tab anti-overturning structure;

[0021] Figure 3 is Figure 2 is a side view of the smoothing and blowing mechanism;

[0022] Figure 4 is Figure 1 is a three-dimensional structural schematic view of the rolling mechanism of the tab anti-overturning structure;

[0023] Figure 5 is Figure 4 is a side view of the rolling mechanism.

[0024] wherein, Figures 1-5 :

[0025] 1, smoothing and blowing mechanism; 11, smoothing plate; 111, flat plate part; 112, inclined part; 12, blowing block; 121, blowing hole; 122, gas supply hole; 13, connecting assembly; 131, clamping block; 132, first connecting plate; 133, second connecting plate; 134, third connecting plate;

[0026] 2, tab rolling mechanism; 21, support seat; 22, connecting column; 221, compression spring; 23, wheel shaft seat; 24, compression wheel;

[0027] 3, pole piece; 31, tab;

[0028] 4, transmission roller;

[0029] 5, pole piece rolling mechanism. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0031] Based on the defects existing in the prior art, the specific drawings will be combined below Figures 1-5 The tab anti-overturning structure of the utility model is described in detail.

[0032] As Figure 1As shown in the drawing, it is the structure schematic diagram of the preferred embodiment of the ear preventing folding structure, the ear preventing folding structure includes smoothing and blowing mechanism 1 and ear rolling mechanism 2, smoothing and blowing mechanism 1 and ear rolling mechanism 2 are all installed on the transmission roller 4 for transmission of the ear 31, and smoothing and blowing mechanism 1 and ear rolling mechanism 2 are set on two different transmission rollers 4 in front and back, when the pole piece 3 with the ear 31 passes through the transmission roller 4, smoothing and blowing mechanism 1 is used for smoothing and blowing the ear 31, and ear rolling mechanism 2 is used for rolling the ear 31.

[0033] The smoothing and blowing mechanism 1 is described in detail below.

[0034] Specifically, as shown in the drawing, Figure 2 and Figure 3 The smoothing and blowing mechanism 1 of the embodiment includes a connecting assembly 13, a smoothing plate 11 and a blowing block 12, the connecting assembly 13 is installed on the transmission roller 4, and the smoothing plate 11 and the blowing block 12 are both arranged on the connecting assembly 13.

[0035] The connecting assembly 13 can install the smoothing plate 11 and the blowing block 12 on the connecting assembly 13. The position of the connecting assembly 13 installed on the transmission roller 4 can be changed, so that the pole piece 3 of different sizes can be adapted.

[0036] In addition, the smoothing plate 11 is arranged along the radial direction of the transmission roller 4, that is, there is a certain gap between the smoothing plate 11 and the transmission roller 4, which facilitates the transmission of the pole piece 3; the smoothing plate 11 and the blowing block 12 are located on the opposite sides of the ear 31, when the ear 31 is raised upward, the smoothing plate 11 smooths the ear 31 from the upper side, when the ear 31 is raised downward, the blowing block 12 blows the ear 31 upward, the smoothing plate 11 and the blowing block 12 act simultaneously, so that the transmission ear 31 is always in a flat state, preventing it from being folded, and further affecting the yield of the battery.

[0037] As a preferred embodiment, as shown in the drawing, Figure 1 and Figure 2 The smoothing plate 11 includes a flat plate part 111 and an inclined part 112, the inclined part 112 is arranged on both sides of the flat plate part 111 and inclined away from the transmission roller 4, that is, the inclined part 112 extends upward, so that the ear 31 enters, and is pressed through the flat plate part 111 to achieve the purpose of smoothing.

[0038] In the embodiment, the inclined part 112 is preferably integrally formed with the flat plate part 111.

[0039] As a preferred embodiment, the blowing block 12 is located below the transmission tab 31, and the blowing block 12 can blow air below the tab 31 to prevent the tab 31 from being warped. The blowing block 12 is further provided with a blowing hole 121 and a gas supply hole 122. The blowing hole 121 is in communication with the gas supply hole 122 through an internal gas passage, and the gas supply hole 122 supplies air to the blowing block 12. The air flow flows in the gas passage and then blows towards the tab 31 through the blowing hole 121.

[0040] In this embodiment, the blowing hole 121 includes a plurality of circular holes with small sizes. The plurality of blowing holes 121 are arranged in a row, so that the air flow is more uniform and the edge warping phenomenon caused by blowing is avoided.

[0041] In more detail, the connecting assembly 13 includes a clamping block 131, a first connecting plate 132, a second connecting plate 133, and a third connecting plate 134. The clamping block 131 is located on the transmission roller 4. The first connecting plate 132 is arranged on the clamping block 131. The second connecting plate 133 and the third connecting plate 134 are arranged on the first connecting plate 132. The smoothing plate 11 is arranged on the second connecting plate 133. The blowing block 12 is arranged on the third connecting plate 134.

[0042] The clamping block 131 is composed of two splicing blocks. The splicing blocks have semicircular grooves on the adjacent sides. The two semicircular grooves are clamped on the shaft at the end of the transmission roller 4. The position of the splicing blocks on the transmission roller 4 is adjustable, so as to adapt to different sizes of the pole piece 3 or the tab 31.

[0043] The first connecting plate 132 is in the shape of a long strip and is fixedly installed at one end of the clamping block 131. Preferably, the first connecting plate 132 is at a 90-degree angle with the clamping block 131, i.e., the clamping block 131 is located on the Z-axis, and the first connecting plate 132 is located on the Y-axis. The second connecting plate 133 is installed at the end of the first connecting plate 132 away from the clamping block 131. The second connecting plate 133 is also perpendicular to the first connecting plate 132, i.e., the second connecting plate 133 is located on the Y-axis. The smoothing plate 11 is installed on the second connecting plate 133. The third connecting plate 134 is installed on the side of the first connecting plate 132 away from the transmission roller 4. The third connecting plate 134 is also perpendicular to the first connecting plate 132, i.e., the third connecting plate 134 is located on the X-axis. The blowing block 12 is installed at the end of the third connecting plate 134 away from the first connecting plate 132.

[0044] The tab flattening mechanism 2 will be described in detail below.

[0045] As Figure 4 and Figure 5As shown, the transmission roller 4 is provided with both the tab rolling mechanism 2 and the tab sheet rolling mechanism 5, since the tab sheet rolling mechanism 5 is prior art, the tab rolling mechanism 2 is not described in detail, only the tab rolling mechanism 2 is described in detail, and the rolling mechanism described above is the tab rolling mechanism 2.

[0046] In detail, the tab rolling mechanism 2 comprises a support seat 21, an axle seat 23 and a pressure roller 24, the support seat 21 is fixedly installed on one side of the tab sheet rolling mechanism 5, the axle seat 23 is arranged below the support seat 21 through a connecting column 22, and the pressure roller 24 is rotatably arranged in the axle seat 23.

[0047] When the tab 31 is driven on the transmission roller 4, the pressure roller 24 generates friction with the tab 31, and the pressure roller 24 rotates to roll the tab 31.

[0048] As a preferred embodiment, continuing to refer to Figure 4 and Figure 5 As shown, the connecting column 22 is preferably a hollow column, and a compression spring 221 is arranged in the connecting column 22, and the compression spring 221 is installed on the axle seat 23.

[0049] When the pressure roller 24 rolls the tab 31, the elastic force of the compression spring 221 can enhance the rolling of the pressure roller 24 on the tab 31, so that the tab 31 is more flat.

[0050] In addition, the axle seat 23 is in a U-shaped structure with an opening downward, and an axle is arranged in the axle seat 23, and both ends of the axle are fixed on the axle seat 23, and the pressure roller 24 is rotatably arranged on the axle, that is, the pressure roller 24 can rotate under the friction of the tab 31.

[0051] In the description of the utility model, it should be explained that, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the device or element must have a specific orientation, structure and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term " install " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can indirectly connect through intermediate medium.

[0053] The above merely provides a specific implementation of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical range disclosed by the present application, which should be encompassed within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the scope of protection of the claims.

Claims

1. A tab anti-turning structure, characterized in that, The smoothing and blowing mechanism and the rolling mechanism are arranged on two different transmission rollers in front and back, and the smoothing and blowing mechanism is used for smoothing and blowing the tab when the tab with the tab passes through the transmission roller, and the rolling mechanism is used for rolling the tab.

2. The tab anti-turning structure of claim 1, wherein, The smoothing and blowing mechanism comprises a connecting assembly, a smoothing plate and a blowing block, the connecting assembly is used for being installed on the transmission roller, the smoothing plate and the blowing block are arranged on the connecting assembly at the same time, and the smoothing plate and the blowing block are arranged on the opposite sides of the tab.

3. The tab anti-turning structure of claim 2, wherein, The smoothing plate is arranged along the radial direction of the transmission roller.

4. The tab anti-turning structure according to claim 3, characterized in that, The smoothing plate comprises a flat plate part and an inclined part, the inclined part is arranged on both sides of the flat plate part and is inclined away from the transmission roller.

5. The tab anti-turning structure of claim 2, wherein, The blowing block is provided with a blowing hole and a gas supply hole, and the blowing hole is communicated with the gas supply hole through an internal gas path.

6. The tab anti-turning structure of claim 2, wherein, The connecting assembly comprises a clamping block, a first connecting plate, a second connecting plate and a third connecting plate, the clamping block is arranged on the transmission roller, the first connecting plate is arranged on the clamping block, the second connecting plate and the third connecting plate are arranged on the first connecting plate at the same time, the smoothing plate is arranged on the second connecting plate, and the blowing block is arranged on the third connecting plate.

7. The tab anti-turning structure of claim 6, wherein, The position of the clamping block clamped on the transmission roller can be changed.

8. The tab anti-turn structure of any one of claims 1-7, wherein, The rolling mechanism comprises a support seat, an axle seat and a pressure roller, the support seat is installed on one side of the tab rolling mechanism, the axle seat is arranged below the support seat through a connecting column, and the pressure roller is rotatably arranged in the axle seat.

9. The tab anti-turning structure of claim 8, wherein, The connecting column is a hollow column, and a compression spring is arranged in the connecting column.

10. The tab anti-turn structure of claim 8, wherein, The cross section of the axle seat is a U-shaped structure with an opening downward, and an axle is arranged in the axle seat, and the pressure roller is rotatably arranged on the axle.

Images