Pole piece flattening device

Abstract

The utility model discloses a pole piece flattening device which comprises a conveying mechanism, a flattening mechanism, a flattening mechanism and a flattening mechanism, the conveying mechanism is provided with an input end and an output end, and the conveying mechanism is suitable for conveying pole pieces entering from the input end to the output end; the smoothing mechanism is arranged at the input end, the output end and / or between the input end and the output end; wherein the flattening mechanism is provided with a flattening part protruding towards the surface of the pole piece so as to be suitable for being in contact with the surface of the pole piece to flatten protrusions generated on the pole piece and / or the flattening mechanism is suitable for blowing out a medium towards the pole piece so as to flatten the protrusions generated on the pole piece. According to the pole piece flattening device disclosed by the utility model, the flattening mechanism is arranged at the convex part on the surface of the pole piece, can be in contact with the pole piece to flatten the bulges generated on the pole piece, and can also blow out the medium towards the pole piece to flatten the bulges generated on the pole piece; wrinkles and protrusions generated in the cutting process of the pole piece can be effectively smoothed without manual intervention, and the production efficiency of the pole piece is improved.

Description

Technical Field

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

[0002] In the related technologies, with the rapid development of the new energy vehicle industry, lithium-ion batteries have been widely used in the automotive field as a power source. An important process in the production of lithium batteries is the cutting of pole pieces. During the cutting process, due to the soft characteristics of the pole piece material, the pole piece with the pole ear will be wrinkled, flanging and crescent-shaped due to its own gravity or internal stress release during the cutting and transportation process, thus causing the pole piece to be scrapped.

[0003] In addition, when wrinkles, flanges and crescents occur at the pole pieces, manual intervention is often required to smooth them out, which greatly affects production efficiency. Therefore, how to effectively smooth out the wrinkles and protrusions generated by the pole pieces during the cutting process and improve the production efficiency of the pole pieces has become an urgent problem to be solved in this field. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a pole piece smoothing device. According to the pole piece smoothing device of the utility model, by setting a smoothing mechanism at a protruding part of the pole piece surface, the smoothing mechanism can contact the pole piece to smooth the protrusions generated on the pole piece, and the smoothing mechanism can also blow a medium toward the pole piece to smooth the protrusions generated on the pole piece. The wrinkles and protrusions generated in the cutting process of the pole piece can be effectively smoothed without manual intervention, thereby improving the production efficiency of the pole piece.

[0005] According to the utility model, the pole piece smoothing device includes: a conveying mechanism, which is provided with an input end and an output end, and is suitable for conveying the pole piece entering from the input end to the output end; a smoothing mechanism, which is arranged at the input end, the output end and / or between the input end and the output end; wherein the smoothing mechanism is provided with a smoothing portion protruding toward the surface of the pole piece so as to be suitable for contacting with the surface of the pole piece to smooth out the protrusions generated on the pole piece and / or the smoothing mechanism is suitable for blowing a medium toward the pole piece to smooth out the protrusions generated on the pole piece.

[0006] According to the utility model, the smoothing device transports the pole piece through a conveying mechanism, and the conveying mechanism is provided with an output end and an input end. The smoothing mechanism can be arranged at the input end, the output end and between the input end and the output end of the conveying mechanism. A smoothing portion can be formed on the smoothing mechanism, and the smoothing portion contacts the protrusions on the surface of the pole piece to smooth the protrusions generated on the pole piece. The smoothing mechanism can also blow a medium toward the protrusions on the surface of the pole piece to smooth the protrusions generated on the pole piece. The wrinkles and protrusions generated on the pole piece during the cutting process can be effectively smoothed without human intervention, thereby improving the production efficiency of the pole piece.

[0007] According to some embodiments of the utility model, the smoothing mechanism includes: a roller brush, which is rotatably arranged on the conveying mechanism, and a flexible contact piece protruding toward the surface of the pole piece is arranged on the outer periphery of the roller brush; and / or an air outlet device, which is arranged on the conveying mechanism, and an air outlet facing the pole piece is formed on the air outlet device, and the air outlet device is suitable for blowing out the medium toward the pole piece through the air outlet.

[0008] According to some embodiments of the utility model, the smoothing mechanism further includes: a driving device, wherein the driving device is disposed on the transmission mechanism, and an output end of the driving device is connected to the roller brush to drive the roller brush to rotate.

[0009] According to some embodiments of the utility model, the smoothing device also includes: a shell, the shell is arranged between the output end and the input end, an open opening opening facing the pole piece is formed on the shell, the roller brush is rotatably arranged in the shell, and the roller brush contacts the surface of the pole piece so as to be suitable for smoothing the protrusions on the pole piece.

[0010] According to some embodiments of the utility model, the shell has a first slide groove and a second slide groove orthogonal to the moving direction of the pole piece at both ends in the width direction of the pole piece, and the two ends of the roller brush are movably arranged in the first slide groove and the second slide groove, respectively, so as to be suitable for adjusting the distance between the roller brush and the pole piece.

[0011] According to some embodiments of the present utility model, the roller brush device further includes: a dust collecting pipe, one end of which is connected to the interior of the shell, and the other end of which is connected to the dust collecting device.

[0012] According to some embodiments of the utility model, the conveying mechanism includes: a first conveying roller and a second conveying roller, the first conveying roller and the second conveying roller are respectively arranged at the input end and the output end and are arranged parallel to each other; the air outlet device includes: an air outlet shell, the air outlet shell has a first wall on a side facing the first conveying roller, and an air outlet is formed on the first wall; wherein the first wall is constructed as an arc wall and is coaxially arranged with the center of the first conveying roller.

[0013] According to some embodiments of the present invention, the radius of the first wall is R, and satisfies: 0.5 mm ≤ R ≤ 1.5 mm.

[0014] According to some embodiments of the utility model, a cavity connected to the air outlet is formed in the air outlet shell, and the air outlet shell is provided with a second wall. The second wall is provided with an air inlet terminal connected to the cavity, and the air inlet terminal is suitable for connecting to an air source.

[0015] According to some embodiments of the utility model, the air outlet device also includes: a valve, which is arranged on the second wall, and has a first valve port and a second valve port that can be selectively connected to each other, the first valve port is connected to the air source, and the second valve port is connected to the air inlet terminal, and the valve can selectively control the flow between the first valve port and the second valve port.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of a pole piece smoothing device according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] Pole piece smoothing device 100;

[0021] A first conveying roller 11, a second conveying roller 12, and a pole piece 13;

[0022] Shell 21, first chute 22, roller brush 23, dust collection pipe 24;

[0023] An air outlet housing 31 , an air inlet terminal 32 , and an air outlet 33 . DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the related technologies, with the rapid development of the new energy vehicle industry, lithium-ion batteries have been widely used in the automotive field as a power source. An important process in the production of lithium batteries is the cutting of pole pieces. During the cutting process, due to the soft characteristics of the pole piece material, the pole piece with the pole ear will be wrinkled, flanging and crescent-shaped due to its own gravity or internal stress release during the cutting and transportation process, thus causing the pole piece to be scrapped.

[0026] In addition, when wrinkles, flanges and crescents occur at the pole pieces, manual intervention is often required to smooth them out, which greatly affects production efficiency. Therefore, how to effectively smooth out the wrinkles and protrusions generated by the pole pieces during the cutting process and improve the production efficiency of the pole pieces has become an urgent problem to be solved in this field.

[0027] Reference below Figure 1 A pole piece smoothing device 100 according to an embodiment of the present invention is described.

[0028] According to the utility model, the pole piece smoothing device 100 includes: a conveying mechanism and a smoothing mechanism, the conveying mechanism is provided with an input end and an output end, the conveying mechanism is suitable for conveying the pole piece 13 entering from the input end to the output end; the smoothing mechanism is arranged at the input end, the output end and / or between the input end and the output end; wherein the smoothing mechanism is provided with a smoothing portion protruding toward the surface of the pole piece 13 so as to be suitable for contacting with the surface of the pole piece 13 to smooth out the protrusions generated on the pole piece 13 and / or the smoothing mechanism is suitable for blowing a medium toward the pole piece 13 to smooth out the protrusions generated on the pole piece 13.

[0029] In some specific embodiments, the smoothing device is mainly composed of a conveying mechanism and a smoothing mechanism. The conveying mechanism can be used to transport the electrode 13 in a direction perpendicular to the horizontal plane. The conveying mechanism is respectively provided with an input end and an output end in the direction perpendicular to the horizontal plane. The electrode 13 after cutting is transported from the horizontal direction to the input end of the conveying mechanism, and the electrode 13 is transported from the input end of the conveying mechanism in the vertical direction to the output end of the conveying mechanism. The smoothing mechanism can be constructed as a first smoothing mechanism and a second smoothing mechanism. The first smoothing mechanism can be arranged between the output end and the input end of the conveying mechanism, and the second smoothing mechanism can be arranged between the output end and the input end of the conveying mechanism. The smoothing mechanism can be arranged at the output end or the input end of the transmission mechanism. The first smoothing mechanism is provided with a smoothing portion facing the protrusion on the surface of the pole piece 13, and the smoothing portion contacts the protrusion on the surface of the pole piece 13 to smooth the protrusion generated on the pole piece 13. The second smoothing mechanism can blow a medium toward the protrusion on the surface of the pole piece 13, and the medium contacts the protrusion on the surface of the pole piece 13 to smooth the protrusion generated on the pole piece 13. This process can effectively smooth the wrinkles and protrusions generated by the pole piece 13 during the cutting process without human intervention, thereby reducing the scrap rate of the pole piece 13 and improving the production efficiency of the pole piece 13.

[0030] According to the smoothing device of the utility model, the pole piece 13 is transported by a conveying mechanism, and an output end and an input end are arranged on the conveying mechanism. The smoothing mechanism can be arranged at the input end, the output end and between the input end and the output end of the conveying mechanism. A smoothing portion can be formed on the smoothing mechanism, and the smoothing portion can contact with the protrusions on the surface of the pole piece 13 to smooth the protrusions generated on the pole piece 13. The smoothing mechanism can also blow a medium toward the protrusions on the surface of the pole piece 13 to smooth the protrusions generated on the pole piece 13. The wrinkles and protrusions generated by the pole piece 13 during the cutting process can be effectively smoothed without human intervention, thereby improving the production efficiency of the pole piece 13.

[0031] According to some embodiments of the utility model, the smoothing mechanism includes: a roller brush 23 and an air outlet device, the roller brush 23 is rotatably arranged on the conveying mechanism, and the outer periphery of the roller brush 23 is provided with a flexible contact piece protruding toward the surface of the pole piece 13; the air outlet device is arranged on the conveying mechanism, and an air outlet facing the pole piece 13 is formed on the air outlet device, and the air outlet device is suitable for blowing out the medium toward the pole piece 13 through the air outlet.

[0032] In some specific embodiments, the smoothing mechanism is mainly composed of a roller brush 23 and an air outlet device. A rotatable roller brush 23 is arranged between the output end and the input end of the transmission mechanism. The outer periphery of the roller brush 23 is wrapped with a flexible contact piece, and the flexible contact piece contacts the protrusion on the surface of the pole piece 13. The roller brush 23 rotates to give the protrusion on the surface of the pole piece 13 a force opposite to the protrusion of the protrusion on the surface of the pole piece 13, thereby smoothing the protrusion on the surface of the pole piece 13. The air outlet device is arranged at the output end of the transmission mechanism. The pole piece 13 smoothed by the rolling brush 23 is transported to the air outlet device through a conveying mechanism. The air outlet device is formed with an air outlet on the side facing the pole piece 13. The air outlet device blows the medium toward the protrusion on the surface of the pole piece 13 through the air outlet. The medium contacts the protrusion on the surface of the pole piece 13 and gives the protrusion on the surface of the pole piece 13 a force opposite to the protrusion of the protrusion on the surface of the pole piece 13, thereby further smoothing the protrusion of the pole piece 13 that cannot be smoothed by the rolling brush 23, thereby ensuring the flatness of the pole piece 13 after cutting.

[0033] According to some embodiments of the present invention, the smoothing mechanism further includes: a driving device, which is disposed on the transmission mechanism, and an output end of the driving device is connected to the roller brush 23 to drive the roller brush 23 to rotate.

[0034] In some specific embodiments, a driving device is also provided in the smoothing mechanism. The driving device can be constructed as a driving motor. The driving device is arranged between the output end and the input end of the transmission mechanism. The output end of the driving device is connected to the input end of the roller brush 23. The driving device can transmit power to the roller brush 23 to drive the roller brush 23 to rotate around the output end of the driving device to smooth the protrusion of the pole piece 13, and the rotation direction of the roller brush 23 can be changed according to the protruding direction of the pole piece 13.

[0035] According to some embodiments of the utility model, the smoothing device also includes: a shell 21, the shell 21 is arranged between the output end and the input end, an open opening opening toward the pole piece 13 is formed on the shell 21, and a roller brush 23 is rotatably arranged in the shell 21, and the roller brush 23 contacts the surface of the pole piece 13 so as to be suitable for smoothing the protrusions on the pole piece 13.

[0036] In some specific embodiments, a shell 21 is further provided in the smoothing device. A support plate is provided on one side of the shell 21 in the width direction of the pole piece 13. The support plate is fixed to the workbench to support and fix the shell 21. The shell 21 is provided between the output end and the input end of the transmission mechanism. An opening is formed on one side of the shell 21 in the thickness direction of the pole piece 13 and is open to the pole piece 13. A accommodating cavity is formed in the shell 21. The roller brush 23 is rotatably provided in the accommodating cavity. When the roller brush 23 contacts the protrusion on the surface of the pole piece 13, the shell can The brush 23 plays a supporting and fixing role, effectively preventing the roller brush 23 from failing to properly contact the protrusions on the surface of the pole piece 13 under the action of its own gravity and external forces. The shell can ensure the reliability and accuracy of the roller brush 23 during operation. After the roller brush 23 smoothes the protrusions on the surface of the pole piece 13 and there is no need for the roller brush 23 to smooth the pole piece 13, the roller brush 23 is accommodated in the accommodating cavity of the shell. On the one hand, it can effectively prevent dust in the external environment from contaminating the roller brush 23. On the other hand, it can improve the transportation efficiency of the pole piece 13 and prevent the roller brush 23 from interfering with the transportation of the pole piece 13.

[0037] According to some embodiments of the utility model, a first slide groove 22 and a second slide groove orthogonal to the moving direction of the pole piece 13 are respectively formed at both ends of the shell 21 in the width direction of the pole piece 13, and the two ends of the roller brush 23 are respectively movably arranged in the first slide groove 22 and the second slide groove to be suitable for adjusting the distance between the roller brush 23 and the pole piece 13.

[0038] In some embodiments, a first slide groove 22 and a second slide groove are respectively formed at both ends of the shell 21 in the width direction of the pole piece 13, and the first slide groove 22 and the second slide groove respectively extend toward the open mouth of the shell 21, and the extension direction of the first slide groove 22 and the second slide groove is orthogonal to the moving direction of the pole piece 13, and the two ends of the roller brush 23 can be movably arranged in the first slide groove 22 and the second slide groove respectively, and the driving device can drive the roller brush 23 to move along the extension direction of the first slide groove 22 and the second slide groove, so as to adjust the relative distance between the roller brush 23 and the pole piece 13, effectively preventing the roller brush 23 from contacting the pole piece 13 too closely, and the excessive pressure applied to the pole piece 13 by the roller brush 23 causing the pole piece 13 to bend, thereby ensuring that the roller brush 23 and the pole piece 13 are at a reliable working distance.

[0039] According to some embodiments of the present invention, the smoothing device further includes: a dust collecting pipe 24, one end of the dust collecting pipe 24 is connected to the interior of the housing 21, and the other end of the dust collecting pipe 24 is connected to the dust collecting device.

[0040] In some specific embodiments, a dust collecting pipe 24 is further provided in the smoothing device, and a connecting hole penetrating the wall of the shell 21 is formed on one side of the shell 21 in the transport direction of the pole piece 13, one end of the dust collecting pipe 24 is connected with the connecting hole, and the connecting hole connects the accommodating chamber with the dust collecting pipe 24, and the other end of the dust collecting pipe 24 is connected with the dust collecting device. When the roller brush 23 smoothes the protrusions on the surface of the pole piece 13, the roller brush 23 will bring the dust on the pole piece 13 into the accommodating chamber, and the dust in the accommodating chamber enters the dust collecting pipe 24 through the connecting hole, and then enters the dust collecting device through the dust collecting pipe 24, thereby collecting and removing the dust generated in the smoothing device, thereby ensuring the cleanliness of the inside of the smoothing device.

[0041] According to some embodiments of the utility model, the conveying mechanism includes: a first conveying roller 11 and a second conveying roller 12, the first conveying roller 11 and the second conveying roller 12 are respectively arranged at the input end and the output end and are arranged parallel to each other; the air outlet device includes: an air outlet shell 31, the air outlet shell 31 has a first wall on a side facing the first conveying roller 11, and an air outlet 33 is formed on the first wall; wherein the first wall is constructed as an arc wall and is coaxially arranged with the center of the first conveying roller 11.

[0042] In some specific embodiments, the conveying mechanism is mainly composed of a first conveying roller 11 and a second conveying roller 12. The first conveying roller 11 is arranged at the input end of the conveying mechanism, and the second conveying roller 12 is arranged at the output end of the conveying mechanism. The first conveying roller 11 and the second conveying roller 12 are spaced apart and arranged parallel to each other in a direction perpendicular to the horizontal plane. The extension direction of the first conveying roller 11 is consistent with the extension direction of the second conveying roller 12. The pole piece 13 is transported from the first conveying roller 11 to the second conveying roller 12. An air outlet shell 31 is provided in the air outlet device, and the air outlet shell 31 faces one side of the first conveying roller 11 or the second conveying roller 12. A first wall is formed on the side, and an air outlet 33 is formed on the first wall, which is open to the pole piece 13. The first wall is constructed as an arc wall, and the center of the first wall is coaxially arranged with the center of the first conveying roller 11 or the second conveying roller 12, so that the air outlet 33 can completely cover the first conveying roller 11 or the second output roller, and the medium blown out by the air outlet device can evenly cover the pole piece 13 located on the first conveying roller 11 or the second conveying roller 12, effectively preventing the medium blown out by the air outlet device from being unevenly distributed, and preventing the pole piece 13 from being bent due to more medium being swept to a certain place, thereby ensuring that the pole piece 13 will not be subjected to secondary bending during the smoothing process. According to some embodiments of the utility model, the radius of the first wall is R, and satisfies: 0.5mm≤R≤1.5mm.

[0043] In some specific embodiments, the radius of the first wall of the air outlet housing 31 is set to R, wherein R is set in the range of 0.5 mm≤R≤1.5 mm.

[0044] When R is set within the range of 0.5mm≤R≤1.5mm, the air outlet 33 can completely cover the first conveying roller 11 or the second conveying roller 12, so that the medium blown out by the air outlet device can evenly cover the pole piece 13 located on the first conveying roller 11 and the second conveying roller 12, effectively preventing uneven distribution of the medium and bending of the pole piece 13 due to more medium being blown to a certain place, and at the same time, it can also reduce the manufacturing cost of the air outlet device.

[0045] According to some embodiments of the utility model, a cavity connected to the air outlet 33 is formed in the air outlet shell 31, and the air outlet shell 31 is provided with a second wall, and an air inlet terminal 32 connected to the cavity is provided on the second wall, and the air inlet terminal 32 is suitable for connecting to an air source.

[0046] In some specific embodiments, a cavity is formed in the air outlet shell 31, and a second wall is formed on the side of the air outlet shell 31 away from the pole piece 13 in the thickness direction of the pole piece 13, and an air inlet terminal 32 is provided on the second wall, one end of the air inlet terminal 32 is connected to the cavity, and the other end of the air inlet terminal 32 is connected to the air source, and the air inlet terminal 32 can provide a purge medium in the cavity, and the cavity is connected to the air outlet 33, and the purge medium provided by the air inlet terminal 32 in the cavity is blown toward the protrusion on the surface of the pole piece 13 through the air outlet 33 to smooth the pole piece 13.

[0047] According to some embodiments of the utility model, the air outlet device also includes: a valve, which is arranged on the second wall, and the valve has a first valve port and a second valve port that can be selectively connected to each other, the first valve port is connected to the air source, and the second valve port is connected to the air inlet terminal 32, and the valve can selectively control the flow between the first valve port and the second valve port.

[0048] In some specific embodiments, a valve is also provided in the air outlet device, and a valve is provided on the outer surface of the second wall. The valve has a first valve port and a second valve port which can be selectively connected to each other. The first valve port is provided between the air source and the air inlet terminal 32, and the second valve port is provided between the air inlet terminal 32 and the cavity. The first valve port can be used to control the gas flow rate delivered from the air source to the air inlet terminal 32, and the second valve port can control the gas flow rate delivered from the air inlet terminal 32 to the cavity. The valve can control the flow rate of the gas blown out by the air outlet device through the first valve port and the second valve port, thereby controlling the force when the airflow contacts the pole piece 13.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0051] In the description of the present invention, "plurality" means two or more.

[0052] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0053] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pole piece smoothing device (100), It is characterized in that include: A conveying mechanism, the conveying mechanism being provided with an input end and an output end, the conveying mechanism being suitable for conveying the pole piece (13) entering from the input end to the output end; A smoothing mechanism, wherein the smoothing mechanism is arranged at the input end, the output end and / or between the input end and the output end; wherein The smoothing mechanism is provided with a smoothing portion protruding toward the surface of the pole piece (13) so as to be suitable for contacting the surface of the pole piece (13) to smooth out protrusions generated on the pole piece (13) and / or the smoothing mechanism is suitable for blowing a medium toward the pole piece (13) to smooth out the protrusions generated on the pole piece (13).

2. The pole piece smoothing device (100) according to claim 1, It is characterized in that The smoothing mechanism comprises: a rolling brush (23), the rolling brush (23) being rotatably arranged on the conveying mechanism, the outer periphery of the rolling brush (23) being provided with a flexible contact piece protruding toward the surface of the pole piece (13); and / or An air outlet device is arranged on the conveying mechanism, an air outlet facing the pole piece (13) is formed on the air outlet device, and the air outlet device is suitable for blowing out the medium toward the pole piece (13) through the air outlet.

3. The pole piece smoothing device (100) according to claim 2, It is characterized in that Also includes: A driving device is arranged on the transmission mechanism, and an output end of the driving device is connected to the roller brush (23) to drive the roller brush (23) to rotate.

4. The pole piece smoothing device (100) according to claim 2, It is characterized in that Also includes: A shell (21), the shell (21) is arranged between the output end and the input end, the shell (21) is formed with an opening which is open toward the pole piece (13), the roller brush (23) is rotatably arranged in the shell (21), the roller brush (23) is in contact with the surface of the pole piece (13) so as to be suitable for smoothing the protrusions on the pole piece (13).

5. The pole piece smoothing device (100) according to claim 4, It is characterized in that The shell (21) is provided with a first slide groove (22) and a second slide groove orthogonal to the moving direction of the pole piece (13) at two ends in the width direction of the pole piece (13), and the two ends of the roller brush (23) are movably arranged in the first slide groove (22) and the second slide groove, respectively, so as to be suitable for adjusting the distance of the roller brush (23) relative to the pole piece (13).

6. The pole piece smoothing device (100) according to claim 4, It is characterized in that Also includes: A dust collecting pipe (24), one end of which is in communication with the interior of the housing (21), and the other end of which is connected to a dust collecting device.

7. The pole piece smoothing device (100) according to claim 2, It is characterized in that The transmission mechanism comprises: A first conveying roller (11) and a second conveying roller (12), wherein the first conveying roller (11) and the second conveying roller (12) are respectively arranged at the input end and the output end and are arranged parallel to each other; The air outlet device comprises: An air outlet housing (31), the air outlet housing (31) having a first wall on a side facing the first conveying roller (11), an air outlet (33) being formed on the first wall; wherein The first wall is constructed as an arc-shaped wall and is coaxially arranged with the center of the first conveying roller (11).

8. The pole piece smoothing device (100) according to claim 7, It is characterized in that The radius of the first wall is R, and satisfies: 0.5 mm ≤ R ≤ 1.5 mm.

9. The pole piece smoothing device (100) according to claim 7, It is characterized in that A cavity connected to the air outlet (33) is formed in the air outlet housing (31), and the air outlet housing (31) is provided with a second wall, on which an air inlet terminal (32) connected to the cavity is provided, and the air inlet terminal (32) is suitable for connecting to an air source.

10. The pole piece smoothing device (100) according to claim 9, It is characterized in that The air outlet device also includes: a valve, which is arranged on the second wall, and has a first valve port and a second valve port that can be selectively connected to each other, the first valve port is connected to the air source, and the second valve port is connected to the air inlet terminal (32), and the valve can selectively control the flow between the first valve port and the second valve port.

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