Device for preventing tab from being folded

Abstract

The utility model belongs to the field of batteries, and particularly relates to a device for preventing a tab from being folded, which comprises a main passing roller and a smoothing plate arranged on one side of the main passing roller, a plurality of main passing roller air holes are formed in the positions, corresponding to the smoothing plate, of the main passing roller; and the main roller passing air hole is communicated with a compressed air pipeline. The tab passing through the main passing roller is blown by the main passing roller air hole communicated with the compressed air pipeline, so that the tab can be effectively prevented from being turned over when passing through the cylindrical passing roller, and the risk that the tab is turned over and enters a pole group is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the field of batteries, and in particular relates to a device for preventing a tab from folding. Background Art

[0002] Lithium-ion batteries are widely used in new energy vehicles, power storage and other fields due to their unique advantages. With the continuous increase in market demand, the energy density of lithium-ion batteries is constantly increasing, while the thickness of the substrate used is constantly decreasing. In the production process of lithium-ion batteries, the tabs are cut out in the blank area of ​​the coating by die-cutting or laser cutting. As the thickness of the foil decreases, the strength of the cut tabs becomes lower and lower. During the die-cutting / laser cutting, winding and operation process, the tab folding problem becomes more and more prominent. The tab folds into the pole group, causing a short circuit in the pole group and causing safety hazards. Utility Model Content

[0003] The utility model aims to overcome the defects in the prior art and provide a device for preventing the tab from folding.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A device for preventing a pole ear from folding comprises a main roller and a smoothing plate arranged on one side of the main roller; a plurality of main roller air holes are arranged at positions corresponding to the main roller and the smoothing plate; the main roller air holes are connected to a compressed air pipeline.

[0006] A hollow driving shaft is arranged in the middle of the main roller; driving shaft air holes are arranged at positions corresponding to the air holes of the main roller; the air holes of the driving shaft are connected with the air holes of the main roller; and one side of the driving shaft is connected with the compressed air pipeline.

[0007] The stroking plate is composed of a plurality of arc-shaped plates, and the stroking plate is in an open shape.

[0008] The lower end of the smoothing plate is provided with a support piece.

[0009] The smoothing plate comprises a bottom smoothing plate whose bottom is connected to the supporting member and smoothing arc plates arranged on both sides of the bottom smoothing plate; the bottom smoothing plate is provided with a smoothing plate through hole.

[0010] The support member is a hollow support box.

[0011] The support box is connected to the hollow support shaft inside; the support shaft is provided with support column air holes at positions corresponding to the through holes of the smoothing plate; the support column air holes are connected to the through holes of the smoothing plate; and the support shaft is connected to the compressed air pipeline.

[0012] The supporting shaft is coaxially arranged with the driving shaft.

[0013] A gap for accommodating the pole lug is arranged between the main passing roller and the caressing plate.

[0014] The compressed air pipeline is communicated with the air compressor.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model utilizes the main roller air holes connected with the compressed air pipeline to blow the pole ears passing through the main roller, which can effectively prevent the pole ears from folding when passing through the cylindrical roller, greatly reducing the risk of the pole ears folding and entering the pole group. As a preferred form, the smoothing plate air holes connected with the compressed air pipeline are also arranged on the smoothing plate, which can enable the pole ears to always remain tangent to the main roller, thereby further preventing the pole ears from folding, thereby improving the yield rate of battery cell production and effectively ensuring the safety of battery cell production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the device for preventing the tab from folding according to an embodiment of the utility model;

[0018] Figure 2 A cross-sectional view of a device for preventing a tab from folding according to an embodiment of the utility model;

[0019] Figure 3 This is a diagram showing the relationship between the device for preventing the tab from folding and the relative position of the tab according to an embodiment of the utility model. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiment.

[0021] Figure 1-3 A device for preventing the tab from folding is shown, comprising a main roller 2 and a smoothing plate 3 arranged on one side of the main roller; a plurality of main roller air holes 21 are arranged at positions corresponding to the main roller 2 and the smoothing plate 3; the main roller air holes 21 are connected to a compressed air pipeline.

[0022] A hollow driving shaft 1 is arranged in the middle of the main passing roller 2; driving shaft air holes are arranged at positions corresponding to the driving shaft 1 and the main passing roller air holes 21; the driving shaft air holes are connected with the main passing roller air holes; one side of the driving shaft 1 is connected with the compressed air pipeline so that the compressed air passes through the driving shaft 1, the driving shaft air holes and the main passing roller air holes 21 in sequence to blow the pole ears.

[0023] The stroking plate 3 is composed of a plurality of arc-shaped plates, and the stroking plate 3 is in an open shape; the stroking plate 3 is in a wrapped shape on one side corresponding to the main passing roller 2 .

[0024] The lower end of the smoothing plate 3 is provided with a support member 4. The support member 4 is a hollow support box.

[0025] The smoothing plate 3 comprises a bottom smoothing plate whose bottom is connected to the supporting member 4 and smoothing arc plates arranged on both sides of the bottom smoothing plate; the bottom smoothing plate is provided with a smoothing plate through hole 31 .

[0026] The support box is connected to the hollow support shaft 5 inside; support column air holes 51 are provided at positions corresponding to the support shaft 5 and the through holes 31 of the smoothing plate; the support column air holes 51 are connected to the through holes 31 of the smoothing plate; the support shaft 5 is connected to the compressed air pipeline; the compressed air blows the bottom of the pole ear through the active shaft 5, the support column air holes 51 and the through holes 31 of the smoothing plate in sequence.

[0027] The supporting shaft 5 is coaxially arranged with the driving shaft 1 .

[0028] A gap for accommodating the pole lug is provided between the main passing roller 2 and the caressing plate 3 .

[0029] The compressed air pipeline is communicated with the air compressor.

[0030] The device for preventing the pole ear from folding provided by the utility model can be used in the process of die cutting / laser cutting, winding and operation. When in use, the pole piece passes through the gap between the main roller 2 and the smoothing plate 3, bypasses the main roller 2, and when the pole ear part passes through the air hole 21 of the main roller, under the joint action of the air flow of the main roller air hole 21 and the air hole 31 of the smoothing plate, the pole ear can always remain tangent to the main roller 2, thereby preventing the pole ear from folding.

[0031] In summary, it can be seen that the utility model utilizes the main roller air holes connected to the compressed air pipeline to blow the pole ears passing through the main roller, which can effectively prevent the pole ears from folding when passing through the cylindrical roller, greatly reducing the risk of the pole ears folding into the pole group. As a preferred form, the smoothing plate air holes connected to the compressed air pipeline are also arranged on the smoothing plate, which can enable the pole ears to always remain tangent to the main roller, thereby further preventing the pole ears from folding, thereby improving the yield rate of battery cell production and effectively ensuring the safety of battery cell production.

[0032] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A device for preventing a tab from folding, characterized in that: It comprises a main roller and a caressing plate arranged on one side of the main roller; a plurality of main roller air holes are arranged at positions corresponding to the main roller and the caressing plate; The air hole of the main roller is communicated with the compressed air pipeline.

2. The device for preventing the tab from folding according to claim 1, characterized in that: A hollow driving shaft is arranged in the middle of the main roller; driving shaft air holes are arranged at positions corresponding to the air holes of the main roller; the air holes of the driving shaft are connected with the air holes of the main roller; and one side of the driving shaft is connected with the compressed air pipeline.

3. The device for preventing the tab from folding according to claim 2, characterized in that: The stroking plate is composed of a plurality of arc-shaped plates, and the stroking plate is in an open shape.

4. The device for preventing the tab from folding according to claim 2, characterized in that: The lower end of the smoothing plate is provided with a support piece.

5. The device for preventing the tab from folding according to claim 4, characterized in that: The smoothing plate comprises a bottom smoothing plate whose bottom is connected to the supporting member and smoothing arc plates arranged on both sides of the bottom smoothing plate; the bottom smoothing plate is provided with a smoothing plate through hole.

6. The device for preventing the tab from folding according to claim 5, characterized in that: The support member is a hollow support box.

7. The device for preventing the tab from folding according to claim 6, characterized in that: The support box is connected to the hollow support shaft inside; the support shaft is provided with support column air holes at positions corresponding to the through holes of the smoothing plate; the support column air holes are connected to the through holes of the smoothing plate; and the support shaft is connected to the compressed air pipeline.

8. The device for preventing the tab from folding according to claim 7, characterized in that: The supporting shaft is coaxially arranged with the driving shaft.

9. The device for preventing the tab from folding according to claim 1, characterized in that: A gap for accommodating the pole lug is arranged between the main passing roller and the caressing plate.

10. The device for preventing the tab from folding according to claim 1, characterized in that: The compressed air pipeline is communicated with the air compressor.

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