An electrode sheet conveying correction device, a method for using the same, and a battery cell forming apparatus

Abstract

The application relates to the technical field of batteries, and discloses an electrode sheet transmission correction device, a use method thereof and a battery cell forming equipment.The electrode sheet transmission correction device comprises a transmission mechanism, a correction mechanism and a blowing mechanism, the transmission mechanism is provided with a first transmission surface, the correction mechanism is provided with a second transmission surface, the second transmission surface is used for transmitting the electrode sheet transmitted from the first transmission surface, the blowing mechanism is located on one side of the second transmission surface, and the blowing mechanism is used for blowing air at the rear end of the electrode sheet transmitted to the second transmission surface, so that the rear end of the electrode sheet is separated from the second transmission surface.The electrode sheet transmission correction device blows air at the rear end of the electrode sheet transmitted to the second transmission surface through the blowing mechanism, so that the next electrode sheet can be smoothly inserted between the previous electrode sheet located on the second transmission surface and the second transmission surface.The previous electrode sheet and the next electrode sheet on the second transmission surface are partially stacked, and each electrode sheet no longer occupies the whole electrode sheet area on the second transmission surface, so that the transmission efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery, and particularly relates to a pole piece transmission correction device and a use method thereof and a battery cell forming equipment. BACKGROUND

[0002] In the prior art, a horizontal transmission area is used for pole piece transmission, and a correction transmission area is used for pole piece correction, so that a subsequent device can perform pole piece attaching operation. However, in the existing production process, after a previous pole piece is removed from the correction transmission area, a next pole piece enters the correction transmission area from the horizontal transmission area, and the correction time interval between multiple pole pieces is relatively long. Since the pole piece spends a long time in the transmission correction device, the subsequent attaching speed of the device is limited, and the production efficiency is reduced.

[0003] Therefore, there is an urgent need to provide a pole piece transmission correction device capable of accelerating the transmission speed of the pole piece. SUMMARY

[0004] The present application provides a pole piece transmission correction device and a use method thereof and a battery cell forming equipment, so as to improve the transmission speed of the pole piece in the transmission correction device.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] According to a first aspect of the present application, a pole piece transmission correction device is provided, comprising a transmission mechanism, a correction mechanism and a blowing mechanism, the transmission mechanism has a first transmission surface, the first transmission surface is used for transmitting the pole piece from the transmission mechanism to the correction mechanism; the correction mechanism has a second transmission surface, the second transmission surface is used for transmitting the pole piece transmitted from the first transmission surface; the blowing mechanism is located on one side of the second transmission surface, and the blowing mechanism is used for blowing the rear end of the pole piece transmitted to the second transmission surface, so that the rear end of the pole piece is separated from the second transmission surface.

[0007] The pole piece transmission correction device provided by the present application can blow the rear end of the pole piece transmitted to the second transmission surface through the blowing mechanism arranged on one side of the second transmission surface, so that the next pole piece can be smoothly inserted between the previous pole piece on the second transmission surface and the second transmission surface. The previous pole piece and the next pole piece on the second transmission surface are partially stacked, and each pole piece no longer occupies the entire pole piece area on the second transmission surface, so that the transmission efficiency can be improved.

[0008] In an embodiment of the present application, the blowing mechanism is arranged between the transmission mechanism and the correction mechanism.

[0009] In an embodiment of the present application, the blowing mechanism comprises a plurality of nozzles, the plurality of nozzles are arranged at intervals along a first direction, and the first direction is perpendicular to the transmission path of the pole piece.

[0010] In one embodiment of the present application, the leading end of the second conveying surface is higher than the trailing end of the first conveying surface along the direction of movement of the pole piece.

[0011] In one embodiment of the present application, the leading end of the second conveying surface is higher than the trailing end of the first conveying surface along the direction of movement of the pole piece.

[0012] In one embodiment of the present application, the trailing end of the first conveying surface and the leading end of the second conveying surface have a height difference h along the vertical direction, and h ranges from 2mm to 10mm.

[0013] In one embodiment of the present application, the trailing end of the first conveying surface and the leading end of the second conveying surface have a gap L along the horizontal direction, and L ranges from 0mm to 10mm.

[0014] According to a second aspect of the present application, a method for using a pole piece conveying and correcting device is provided, comprising:

[0015] The first conveying surface of the conveying mechanism conveys the pole piece;

[0016] The blowing mechanism blows air at the trailing end of the pole piece conveyed to the second conveying surface of the correcting mechanism;

[0017] The second conveying surface conveys the pole piece conveyed from the first conveying surface.

[0018] In one embodiment of the present application, the method for blowing air at the trailing end of the pole piece conveyed to the second conveying surface of the correcting mechanism by the blowing mechanism comprises:

[0019] Selectively opening and closing the blowing mechanism; or,

[0020] Controlling the amount of air blown, and continuously opening the blowing mechanism.

[0021] According to a third aspect of the present application, an electric core forming device is provided, comprising any one of the pole piece conveying and correcting devices provided in the above technical solutions. BRIEF DESCRIPTION OF DRAWINGS

[0022] For better understanding of the present disclosure, reference can be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements can be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, related elements or components can have different settings as known in the art. Furthermore, in the drawings, the same reference numerals represent the same or similar components throughout the various drawings. Among them:

[0023] Figure 1 The first schematic diagram of the pole piece conveying and correcting device provided in the embodiments of the present application;

[0024] Figure 2 Figure 1 is a first schematic view of an electrode plate conveying and correcting device according to an embodiment of the present application; Figure 1 Figure 2 is a first sectional view along A-A in Figure 1;

[0025] Figure 3 Figure 3 is a second schematic view of an electrode plate conveying and correcting device according to an embodiment of the present application;

[0026] Figure 4 Figure 4 is a second sectional view along A-A in Figure 3; Figure 1

[0027] Figure 5 is a third sectional view along A-A in Figure 3; Figure 5 Figure 1 Figure 6 is a fourth sectional view along A-A in Figure 3;

[0028] Figure 6 Figure 1 Figure 7 is a third schematic view of an electrode plate conveying and correcting device according to an embodiment of the present application;

[0029] Figure 7 Figure 8 is a fourth schematic view of an electrode plate conveying and correcting device according to an embodiment of the present application;

[0030] Figure 8 Figure 9 is a first sectional view along A-A in Figure 7;

[0031] Figure 9 Figure 10 is a second sectional view along A-A in Figure 7; Figure 7

[0032] Figure 10 Figure 7 Figure 11 is a flow chart of a use process of an electrode plate conveying and correcting device according to an embodiment of the present application.

[0033] Figure 11 The following items are explained:

[0034] 01-electrode plate; 1-conveying mechanism; 11-first roller body; 2-correcting mechanism; 21-second roller body; 22-stop piece; 221-first stop block; 2211-sub stop block; 222-second stop block; 3-blowing mechanism; 4-pressing mechanism. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] Figure 1 ​​​​This is a schematic diagram of the electrode transmission correction device provided in the embodiments of this application. Figure 2 for Figure 1 The sectional view at point AA. Please refer to... Figure 2 refer to Figure 1 The structure shown includes a transmission mechanism 1, a correction mechanism 2, and an air blowing mechanism 3. The transmission mechanism 1 has a first transmission surface B1, which is used to transmit the electrode 01 from the transmission mechanism 1 to the correction mechanism 2. The correction mechanism 2 has a second transmission surface B2, which is used to transmit the electrode 01 transmitted from the first transmission surface B1. The air blowing mechanism 3 is located on one side of the second transmission surface B2 and is used to blow air onto the rear end of the electrode 01 transmitted to the second transmission surface B2 so that the rear end of the electrode 01 is disengaged from the second transmission surface B2.

[0038] It should be noted that the electrode transfer and correction device provided in this application embodiment, by placing the air blowing mechanism 3 on one side of the second transfer surface B2, can blow air onto the rear end of the electrode 01 transferred to the second transfer surface B2, so that the front end of the subsequent electrode 01 can be smoothly inserted between the previous electrode 01 and the second transfer surface B2. It is worth noting that at this time, the previous electrode 01 and the subsequent electrode 01 on the second transfer surface B2 are partially stacked, and each electrode 01 no longer occupies the entire electrode area on the second transfer surface B2 alone, thereby improving transfer efficiency.

[0039] It should be understood that the transmission direction of electrode 01 from transmission mechanism 1 to correction mechanism 2 forms direction c. "Front end" refers to the part of electrode 01 that first contacts transmission mechanism 1 or correction mechanism 2 along direction c, and conversely, "rear end" refers to the part of electrode 01 that later contacts transmission mechanism 1 or correction mechanism 2 along direction c.

[0040] In one embodiment, such as Figure 3 As shown, the transmission mechanism 1 includes a plurality of parallel first rollers 11, which form a first transmission surface B1; the correction mechanism 2 includes a plurality of parallel second rollers 21, which form a second transmission surface B2, and the extension direction of the second rollers 21 is at a certain angle to the extension direction of the first rollers 11.

[0041] For example, in the transmission mechanism 1, a plurality of first rollers 11 are arranged sequentially in the traveling direction c of the electrode 01, connected to the same drive shaft, and driven by the same conveyor belt. The plurality of first rollers 11 in the transmission mechanism 1 have the same horizontal height, where 'same height' includes cases where the heights are completely equal and the height difference is less than 0.1 mm. It should be understood that the top surfaces of the plurality of first rollers 11 in the transmission mechanism 1 form a first transmission surface B1.

[0042] Similarly, the multiple second rollers 21 in the correction mechanism 2 are connected to the same drive shaft and driven by the same conveyor belt. Specifically, the multiple second rollers 21 in the correction mechanism 2 have the same horizontal height, where 'same height' includes cases where the heights are completely equal and the height difference is less than 0.1 mm. The top surfaces of the multiple second rollers 21 in the correction mechanism 2 form a second transmission surface B2.

[0043] Optionally, the diameters of the first roller 11 and the second roller 21 can be the same or different, and can be adjusted according to the actual process requirements.

[0044] Optionally, the linear velocities of the rolling surfaces of the first roller 11 and the second roller 21 can be the same or different. In other words, the transmission speeds of the transmission mechanism 1 and the correction mechanism 2 can be the same or different, and can be adjusted according to the actual process requirements.

[0045] In another embodiment, the transmission mechanism 1 includes a plurality of parallel first rollers 11, and the alignment mechanism 2 may include a horizontal transmission member and a pulling member. The horizontal transmission member is used to transport the electrode 01. For example, the horizontal transmission member may be composed of rollers parallel to the first rollers 11, or the horizontal transmission member may be a conveyor belt; the pulling member is used to align and pull the electrode 01.

[0046] It is worth noting that, in order to clearly describe the electrode transfer and correction device provided in the embodiments of this application, the following technical solution will be described using the example of a transfer mechanism 1 including a plurality of parallel first rollers 11 and a correction mechanism 2 including a plurality of parallel second rollers 21.

[0047] In one embodiment, the blowing mechanism 3 can be as follows: Figure 3 As shown, the blowing mechanism 3 is located between the transmission mechanism 1 and the correction mechanism 2 to facilitate adjustment of the blowing direction and volume. Of course, the blowing mechanism 3 can also be located below the correction mechanism 2, and the gas blown by the blowing mechanism 3 is transmitted through the gap between the second rollers 21 to reduce the size of the device.

[0048] It should be noted that the air blowing mechanism 3 may include one or more air nozzles. In one embodiment, the air blowing mechanism 3 includes multiple nozzles (to... Figure 3 (As shown by the black circle in the middle), and multiple nozzles are spaced apart along a first direction. This first direction is perpendicular to direction c. It should be understood that, in one possible implementation, multiple nozzles can be selectively opened and closed, causing the air blowing mechanism 3 to blow on the rear end of the electrode 01 conveyed by the second transmission surface B2, so that the rear end of the electrode 01 is raised, facilitating the insertion of the front end of the subsequent electrode 01 between the previous electrode 01 and the second transmission surface B2. Alternatively, the air blowing mechanism 3 can be kept on continuously, controlling the air volume so that the air blowing mechanism 3 continuously blows on the electrode 01, ensuring that the electrode 01 is not blown away.

[0049] It is worth noting that, along the vertical direction, the closer the blowing mechanism 3 is to the second conveying surface B2, the greater the force of the blowing mechanism 3 acting on the pole piece 01 under the condition of the same air output, and vice versa, the air output of the blowing mechanism 3 can be reduced under the condition of the same acting force.

[0050] In an embodiment, the leading end of the second conveying surface B2 is higher than the trailing end of the first conveying surface B1 along the direction c of the pole piece 01.

[0051] It should be understood that the "leading end" refers to the end of the pole piece 01 first contacted by the conveying mechanism 1 and the correcting mechanism 2 along the direction c, and for the same reason, the "trailing end" refers to the end of the pole piece 01 last contacted by the conveying mechanism 1 and the correcting mechanism 2 along the direction c.

[0052] It should be noted that the pole piece conveying and correcting device provided by the embodiments of the present application forms a height difference between the conveying mechanism 1 and the correcting mechanism 2 by setting the leading end of the second conveying surface B2 to be higher than the trailing end of the first conveying surface B1. Through the height difference and the blowing mechanism 3, the next pole piece 01 can be more smoothly inserted under the previous pole piece 01 located on the second conveying surface B2 when the pole piece 01 is conveyed by the conveying mechanism 1 along the direction c to the correcting mechanism 2. As shown in Figure 4 , the previous pole piece 01 and the next pole piece 01 on the second conveying surface B2 are partially stacked, and each pole piece 01 no longer occupies the entire pole piece area on the second conveying surface B2, thereby better improving the conveying efficiency.

[0053] It should be understood that the form of the pole piece 01 when conveying between the conveying mechanism 1 and the correcting mechanism 2 is not limited to Figure 2 the form shown in the figure, which is only illustrative. Since the pole piece 01 has a certain softness, the pole piece 01 will deform to a certain extent when conveying between the conveying mechanism 1 and the correcting mechanism 2, which is not shown here.

[0054] It should be noted that the structures of the first conveying surface B1 in the conveying mechanism 1 and the second conveying surface B2 in the correcting mechanism 2 are not limited to Figure 2 the structures shown in the figure. The first conveying surface B1 can be a horizontal conveying surface or an inclined conveying surface having an angle with the ground, and similarly, the second conveying surface B2 can be a horizontal conveying surface or an inclined conveying surface having an angle with the ground.

[0055] In some embodiments, the trailing end of the first conveying surface B1 is not lower than the leading end of the first conveying surface B1 along the direction c of the pole piece 01. It should be noted that when the trailing end of the first conveying surface B1 is not lower than the leading end of the first conveying surface B1, this structure can make the pole piece 01 have a better deformation posture when conveying between the conveying mechanism 1 and the correcting mechanism 2, so that the pole piece 01 can be more smoothly inserted under the previous pole piece 01 on the second conveying surface B2.

[0056] Specifically, in one implementation, the first transmission surface B1 is as follows: Figure 4 In the structure shown, the tail end of the first transmission surface B1 is flush with the head end, that is, the first transmission surface B1 is a horizontal transmission surface; in another embodiment, the first transmission surface B1 is as follows: Figure 5 As shown in the structure, the tail end of the first transmission surface B1 is higher than the head end; in other words, the first transmission surface B1 is tilted upward relative to the ground. Of course, the tilt angle of the first transmission surface B1 needs to be set according to requirements. Specifically, the friction between the electrode 01 and the first transmission surface B1, as well as other factors, need to be considered to ensure that the electrode 01 can move along the direction c with the first transmission surface B1.

[0057] To facilitate the description of the structural relationship between the first transmission surface B1 and the second transmission surface B2, we will now assume that both the first transmission surface B1 and the second transmission surface B2 are as follows: Figure 4 The horizontal transmission surface shown is used as an example for illustration.

[0058] Please refer to Figure 4 In one embodiment of the structure shown in this application, the height difference between the tail end of the first transmission surface B1 and the head end of the second transmission surface is h in the vertical direction. The range of h is exemplarily 2mm to 10mm, or even 3mm to 4mm, such as 3mm, 3.5mm, or 4mm. It is worth noting that this height difference h will affect the transmission posture of the electrode 01 between the transmission mechanism 1 and the correction mechanism 2.

[0059] Please refer to the following: Figure 6 In the structure shown, along the horizontal direction, there is a gap L between the tail end of the first transmission surface B1 and the head end of the second transmission surface B2. This gap L is another factor affecting the transmission posture of the electrode 01 between the transmission mechanism 1 and the correction mechanism 2. For example, the range of this gap L is 0mm to 10mm, or even 0 to 8mm. For instance, the value of the gap L can be set to 0mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, or even 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, or 8mm.

[0060] It is worth noting that by adjusting the gap L and the height difference h, the degree of suspension of the electrode 01 during transmission between the transmission mechanism 1 and the correction mechanism 2 can be changed. This degree of suspension will affect the transmission posture of the electrode 01, thereby affecting the success rate of inserting the subsequent electrode 01 into the previous electrode 01.

[0061] Exemplarily, the h value is selected as 3mm-4mm, and the L value is selected as 0-8mm. It should be noted that when the h value and the L value are set according to the above range, the transmission posture of the pole piece 01 is better when the pole piece 01 is transmitted between the transmission mechanism 1 and the correction mechanism 2, and the latter pole piece 01 can be better inserted between the former pole piece 01 and the second transmission surface B2.

[0062] In an embodiment of the present application, the correction mechanism 2 of the pole piece transmission and correction device provided by the embodiment of the present application further comprises a blocking piece 22. Please continue to refer to Figure 7 As shown in the structure, the blocking piece 22 is arranged on the side of the second transmission surface B2 away from the first transmission surface B1 and is arranged along the edge of the second transmission surface B2 to limit at least one corner of the pole piece 01.

[0063] In a specific embodiment, please continue to refer to Figure 7 As shown in the structure, the blocking piece 22 comprises a first blocking block 221 and a second blocking block 222, the first blocking block 221 is arranged along the first edge of the second transmission surface B2, the second blocking block 222 is arranged along the second edge of the second transmission surface B2, the first edge is the side edge of the second transmission surface B2 away from the first transmission surface B1, and the second edge is perpendicular to the first edge.

[0064] Specifically, taking the first blocking block 221 arranged along the Y direction and the second blocking block 222 arranged along the X direction as an example, the conveying process of the pole piece 01 is as follows: first, the transmission mechanism 1 conveys the pole piece 01 along the direction c to the second transmission surface B2 of the correction mechanism 2, and then the second transmission surface B2 conveys the pole piece 01 to the blocking piece 22 in the inclined direction (the direction inclined to the X direction towards the Y direction) to realize positioning. It should be understood that the pole piece 01 on the second transmission surface B2 comprises an X direction component speed and a Y direction component speed, and the first blocking block 221 and the second blocking block 222 cooperate to align at least one foot of the pole piece 01.

[0065] It should be noted that if the included angle θ between the first roller body 11 and the second roller body 21 is too small or too large, the one-way movement speed of the pole piece 01 in the X direction or the Y direction is too fast, which may cause alignment failure or a long alignment time. In the embodiment, the included angle θ is set to be 30°-60°, which can ensure the alignment efficiency of the pole piece 01, so that the pole piece 01 can be quickly aligned.

[0066] Please continue to refer to Figure 7 As shown in the structure, since the size of the pole piece 01 along the Y direction is greater than the size along the X direction, the size of the first blocking block 221 along the Y direction can be greater than the size of the second blocking block 222 along the X direction. Alternatively, the first blocking block 221 can comprise at least two sub-blocking blocks 2211, and the at least two sub-blocking blocks 2211 are arranged along the first edge. Exemplarily, as shown in Figure 8As shown, two sub-blocks 2211 are arranged along the Y direction.

[0067] In one embodiment, as shown, at least part of the blocking piece 22 can be telescoped along the vertical direction d relative to the second conveying surface B2. It should be understood that due to the angle, the first block 221 is only shown in the figure. Figure 9 Figure 8 As shown, at least part of the blocking piece 22 can be telescoped along the vertical direction d relative to the second conveying surface B2. It should be understood that due to the angle, the first block 221 is only shown in the figure.

[0068] It should be noted that at least part of the blocking piece 22 in the pole piece conveying and correcting device provided by the embodiments of the present application can be telescoped along the vertical direction d relative to the second conveying surface B2. Specifically, in cooperation with the telescoping operation, the blocking piece 22 can shield the pole piece 01 during the correcting process to prevent the pole piece 01 from flying out. At the same time, when the pole piece 01 is subjected to subsequent lamination operation, the height m of the blocking piece 22 beyond the second conveying surface B2 can be shortened for avoidance.

[0069] Therefore, the pole piece conveying and correcting device provided by the embodiments of the present application can improve the stability of the device for conveying and correcting the pole piece 01, thereby improving the production efficiency.

[0070] Specifically, the first block 221 has a raised position and a lowered position. When the blocking piece 22 is in the raised position, the top of the first block 221 is beyond the second conveying surface B2. When the first block 221 is in the lowered position, the distance between the top of the first block 221 and the second conveying surface B2 is smaller than that in the raised position. Specifically, the first block 221 can be completely retracted below the second conveying surface B2, or the first block 221 can remain with a small range of the top beyond the second conveying surface B2.

[0071] In one possible implementation, the subsequent lamination mechanism can be provided with a blocking portion having a groove for embedding the first block 221. When the first block 221 is in the raised position, the top of the first block 221 is embedded in the groove to form more effective shielding of the pole piece 01, thereby preventing the pole piece 01 from flying out of the correcting mechanism from the top of the first block 221, and avoiding downtime and improving production efficiency.

[0072] It should be understood that when the first block 221 includes at least two sub-blocks 2211, the at least two sub-blocks 2211 can be driven separately by a plurality of drive motors to broaden the applicable scenarios. Alternatively, the at least two sub-blocks 2211 can be simultaneously driven by the same drive motor to simplify the overall structure.

[0073] Of course, the second block 222 can also be controlled to telescope along the vertical direction d as needed, which will not be described herein again.

[0074] In some embodiments, the pole piece conveying and correcting device provided by the embodiments of the present application further includes a first conveying mechanism 21 and a second conveying mechanism 22. Figure 10 ​The pressing mechanism 4 shown above the first transmission surface B1 has a pressing position and a lifting position. When the pressing mechanism 4 is in the pressing position, the pressing mechanism 4 and the first transmission surface B1 form a pressing transmission space for the pole piece 01. When the pressing mechanism 4 is in the lifting position, the pole piece 01 moves out of the pressing transmission space.

[0075] It should be noted that when the pole piece transmission and correction device is applied, the pressing mechanism 4 moves downward until the pressing transmission space is formed with the first transmission surface B1, and the pole piece 01 can move in the direction c relative to the pressing transmission space. When the pole piece 01 reaches the preset position, the pressing mechanism 4 releases the pole piece 01. The released pole piece 01 moves on the second transmission surface B2 of the correction mechanism 2 for correction.

[0076] It should be understood that when the pole piece 01 is partially transmitted from the first transmission surface B1 to the second transmission surface B2, the pole piece 01 only moves in the direction c relative to the second transmission surface B2 because the pole piece 01 is partially in the pressing transmission space. When the pressing mechanism 4 is switched from the pressing position to the lifting position, the pole piece 01 moves on the second transmission surface B2 for correction. It is worth noting that the pole piece transmission and correction device provided by the embodiment of the present application can control when the pole piece 01 moves on the second transmission surface B2 for correction by controlling the pressing time of the pressing mechanism 4 on the pole piece 01, thereby preventing the pole piece 01 from flying out of the correction area, improving the stability of the pole piece 01 in the transmission and correction process, and improving the correction success rate.

[0077] For example, when the distance between the front end of the pole piece 01 and the blocking piece 22 provided on the first edge of the second transmission surface B2 is 4-5 mm, the pressing mechanism 4 is switched from the pressing position to the lifting position to release the pole piece 01. Of course, since the size and material of the pole piece 01 may vary, the pressing mechanism 4 is not limited to switching to the lifting position when the distance between the front end of the pole piece 01 and the blocking piece 22 is 4-5 mm.

[0078] In a specific embodiment, the pressing mechanism 4 includes at least two pressing pieces, and the at least two pressing pieces are spaced apart along the Y direction, and each pressing piece can rotate around its own axis. It should be noted that the pressing mechanism 4 can be provided with only one pressing piece, or two pressing pieces, or other number of pressing pieces according to requirements. As for the shape of the pressing piece, it can be provided as a rubber wheel, or a metal wheel, or a brush, which can be set according to requirements, and will not be described here.

[0079] In an embodiment, the pressing piece is adjustable relative to the position of the first transmission surface B1 along the direction c of the pole piece 01.

[0080] It should be noted that the position of the pressing member relative to the first conveying surface B is adjustable along the direction c, so that the pole piece conveying correction device provided by the embodiment of the present application can be applied to pole pieces 01 of different sizes, thereby widening the application scenarios of the device.

[0081] It should be noted that the present application provides a method for using the pole piece conveying correction device. Referring to the flowchart shown in Figure 11 The method for using the pole piece conveying correction device provided by the embodiment of the present application includes the following steps:

[0082] Step S111: The first conveying surface B1 of the conveying mechanism 1 conveys the pole piece 01.

[0083] Step S112: The blowing mechanism 3 blows air at the rear end of the pole piece 01 conveyed to the second conveying surface B2 of the correction mechanism 2.

[0084] Step S113: The second conveying surface B2 conveys the pole piece 01 conveyed from the first conveying surface B1.

[0085] The method for using the pole piece conveying correction device provided by the embodiment of the present application blows air at the rear end of the pole piece 01 conveyed to the second conveying surface B2 by the blowing mechanism 3, so that the next pole piece 01 can be smoothly inserted between the previous pole piece 01 located on the second conveying surface B2 and the second conveying surface B2. The previous pole piece 01 and the next pole piece 01 on the second conveying surface B2 are partially stacked, and each pole piece 01 no longer occupies the entire pole piece area on the second conveying surface B2, thereby improving the conveying efficiency.

[0086] In an embodiment of the present application, the method for blowing air at the rear end of the pole piece 01 conveyed to the second conveying surface B2 of the correction mechanism 2 by the blowing mechanism 3 in step S112 includes selectively opening and closing the blowing mechanism, or controlling the blowing amount and continuously opening the blowing mechanism 3.

[0087] It should be noted that the pole piece conveying correction device in the method for using the pole piece conveying correction device provided by the embodiment of the present application can be the pole piece conveying correction device provided in any of the above technical solutions, which will not be described here.

[0088] In addition, the embodiment of the present application also provides an electric core forming equipment, which includes the pole piece conveying correction device provided in any of the above technical solutions.

[0089] For example, the electric core forming equipment provided by the embodiment of the present application includes two pole piece conveying correction devices, which are symmetrically arranged and used for conveying first pole pieces and second pole pieces, respectively.

[0090] It is worth noting that each battery cell unit comprises a diaphragm and a first electrode plate and a second electrode plate on both sides of the diaphragm. The first electrode plate and the second electrode plate are opposite in polarity. For example, when the first electrode plate is a positive electrode, the second electrode plate is a negative electrode, and vice versa. When the battery cell forming device provided by the embodiment of the application is applied, two electrode plate transmission correction devices can be used to transmit the first electrode plate and the second electrode plate.

[0091] Of course, the battery cell forming device provided by the embodiment of the application can also be provided with a fitting device to fit the first electrode plate and the second electrode plate on both sides of the diaphragm. The specific structure of the fitting device can be set according to requirements, and will not be described here.

[0092] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An electrode tab transfer correction device, characterized by, The device comprises a conveying mechanism, a correcting mechanism and a blowing mechanism. The conveying mechanism has a first conveying surface for conveying the pole piece from the conveying mechanism to the correcting mechanism. The correcting mechanism has a second conveying surface for conveying the pole piece conveyed from the first conveying surface. The blowing mechanism is located at one side of the second conveying surface and is used to blow the rear end of the pole piece conveyed to the second conveying surface so that the rear end of the pole piece is separated from the second conveying surface, thereby allowing the next pole piece to be smoothly inserted between the previous pole piece and the second conveying surface.

2. The pole piece transfer correction device of claim 1, wherein, The blowing mechanism is arranged between the conveying mechanism and the correcting mechanism.

3. The pole piece transfer correction device of claim 1 or 2, wherein, The blowing mechanism comprises a plurality of nozzles arranged at intervals along a first direction perpendicular to the conveying path of the pole piece.

4. The pole piece transfer correction device of any one of claims 1 to 3, wherein, The leading end of the second conveying surface is higher than the trailing end of the first conveying surface along the advancing direction of the pole piece.

5. The pole piece transfer correction device of claim 4, wherein, The trailing end of the first conveying surface and the leading end of the second conveying surface have a height difference h along the vertical direction, and h ranges from 2mm to 10mm.

6. The pole piece transfer correction device of claim 5, wherein, The trailing end of the first conveying surface and the leading end of the second conveying surface have a gap L along the horizontal direction, and L ranges from 0mm to 10mm.

7. A method of using an electrode tab transfer device, the method comprising: The device comprises: the first conveying surface of the conveying mechanism conveys the pole piece; the second conveying surface conveys the pole piece conveyed from the first conveying surface; the blowing mechanism blows the rear end of the pole piece conveyed to the second conveying surface of the correcting mechanism, thereby allowing the next pole piece to be smoothly inserted between the previous pole piece and the second conveying surface.

8. The method of use of claim 7, wherein, The method for blowing the rear end of the pole piece conveyed to the second conveying surface of the correcting mechanism by the blowing mechanism comprises: selectively opening and closing the blowing mechanism; or controlling the blowing amount and continuously opening the blowing mechanism.

9. An electrode forming apparatus, characterized by comprising: The device comprises the pole piece conveying and correcting device according to any one of claims 1-6.

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