An electrode sheet conveying correction device and a battery cell forming apparatus

Abstract

The application relates to the technical field of batteries, and discloses an electrode sheet transmission correction device and a battery cell forming equipment. The electrode sheet transmission correction device comprises a transmission mechanism and a correction mechanism. The transmission mechanism has a first transmission surface, which is used for transmitting electrode sheets from the transmission mechanism to the correction mechanism. The correction mechanism has a second transmission surface, which is used for transmitting the electrode sheets transmitted from the first transmission surface. In the direction in which the electrode sheets move, the front end of the second transmission surface is higher than the tail end of the first transmission surface. The electrode sheet transmission correction device sets the front end of the second transmission surface to be higher than the tail end of the first transmission surface, so that a height difference is formed between the transmission mechanism and the correction mechanism. When the electrode sheets are transmitted from the transmission mechanism to the correction mechanism, the next electrode sheet can be inserted between the previous electrode sheet on the second transmission surface and the second transmission surface, so that the previous electrode sheet and the next electrode sheet are partially stacked on the second transmission surface. Each electrode sheet no longer occupies the entire 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 battery, in particular to a pole piece transmission correction device and a battery cell forming equipment. BACKGROUND

[0002] In the prior art, the pole piece transmission is carried out in a horizontal transmission area, and the pole piece correction is carried out in a correction transmission area, so as to facilitate the pole piece attaching operation of subsequent equipment. However, in the existing production process, after the previous pole piece is removed from the correction transmission area, the 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 consumes a long time in the transmission correction device, the subsequent attaching speed of the device is limited, resulting in a reduction in production efficiency.

[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 battery cell forming equipment 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 and a correction mechanism, the transmission mechanism having a first transmission surface, the first transmission surface being used to transmit the pole piece from the transmission mechanism to the correction mechanism; the correction mechanism having a second transmission surface, the second transmission surface being used to transmit the pole piece transmitted from the first transmission surface, and the leading end of the second transmission surface being higher than the trailing end of the first transmission surface along the direction of travel of the pole piece.

[0007] The pole piece transmission correction device provided by the present application forms a height difference between the transmission mechanism and the correction mechanism by setting the leading end of the second transmission surface to be higher than the trailing end of the first transmission surface, so that when the pole piece is transmitted from the transmission mechanism to the correction mechanism, the next pole piece can be inserted between the previous pole piece on the second transmission surface and the second transmission surface, so that the previous pole piece and the next pole piece are partially stacked on the second transmission surface, and each pole piece no longer occupies the entire pole piece area on the second transmission surface, thereby improving the transmission efficiency.

[0008] In an embodiment of the present application, along the direction of travel of the pole piece, the trailing end of the first transmission surface is not lower than the leading end of the first transmission surface.

[0009] In an embodiment of the present application, the first transmission surface is a horizontal transmission surface; and the second transmission surface is a horizontal transmission surface.

[0010] In an embodiment of the present application, along the vertical direction, the tail end of the first conveying surface and the head end of the second conveying surface have a height difference h, and h ranges from 2 mm to 10 mm.

[0011] In an embodiment of the present application, along the horizontal direction, the tail end of the first conveying surface and the head end of the second conveying surface have a gap L, and L ranges from 0 mm to 10 mm.

[0012] In an embodiment of the present application, the conveying mechanism comprises a plurality of first roller bodies arranged in parallel, and the plurality of first roller bodies form the first conveying surface; the correction mechanism comprises a plurality of second roller bodies arranged in parallel, and the plurality of second roller bodies form the second conveying surface, and the extension direction of the second roller bodies forms a certain angle with the extension direction of the first roller bodies.

[0013] In an embodiment of the present application, the correction mechanism further comprises a blocking piece arranged on the side of the second conveying surface away from the first conveying surface, and the blocking piece is arranged along the edge of the second conveying surface to limit at least one corner portion of the pole piece.

[0014] In an embodiment of the present application, the pole piece conveying and correction device provided by the present application further comprises a blowing mechanism arranged on the side of the second conveying surface facing the first conveying surface, and the blowing mechanism is used to blow air to the rear end of the pole piece conveyed to the second conveying surface.

[0015] In an embodiment of the present application, the pole piece conveying and correction device provided by the present application further comprises a pressing mechanism arranged above the conveying mechanism, and the pressing mechanism has a pressing station and a lifting station; when the pressing mechanism is in the pressing station, the pressing mechanism and the first conveying surface form a pressing conveying space for the pole piece; when the pressing mechanism is in the lifting station, the pole piece moves out of the pressing conveying space.

[0016] According to a second aspect of the present application, an electric core forming equipment is provided, which comprises any one of the pole piece conveying and correction devices provided in the above technical solutions.

[0017] In the electric core forming equipment provided by the embodiments of the present application, the tail end of the first conveying surface is higher than the head end of the second conveying surface, and a height difference is formed between the conveying mechanism and the correction mechanism, so that when the pole piece is conveyed from the conveying mechanism to the correction mechanism, the next pole piece can be inserted between the previous pole piece on the second conveying surface and the second conveying surface, and the previous pole piece and the next pole piece are partially stacked on the second conveying surface, and each pole piece no longer occupies the entire pole piece area on the second conveying surface, so that the conveying efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] To better understand this disclosure, reference may be made to the embodiments shown in the following figures. Components in the figures are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of this disclosure. Additionally, related elements or components may have different arrangements as known in the art. Furthermore, in the figures, the same reference numerals denote the same or similar components in various figures. Wherein:

[0019] Figure 1 This is a first schematic diagram of the electrode transmission correction device provided in the embodiments of this application;

[0020] Figure 2 for Figure 1 The first sectional view at point AA;

[0021] Figure 3 for Figure 1 The second sectional view at point AA;

[0022] Figure 4 for Figure 1 The third sectional view at point AA;

[0023] Figure 5 This is a second schematic diagram of the electrode transmission correction device provided in the embodiments of this application;

[0024] Figure 6 This is a third schematic diagram of the electrode transmission correction device provided in the embodiments of this application;

[0025] Figure 7 This is a fourth schematic diagram of the electrode transmission correction device provided in the embodiments of this application;

[0026] Figure 8 for Figure 6 Sectional view at point AA;

[0027] Figure 9 This is a fifth schematic diagram of the electrode transmission correction device provided in the embodiments of this application;

[0028] Figure 10 for Figure 9 Sectional view at point AA;

[0029] Figure 11 for Figure 9 Another sectional view at point AA.

[0030] The annotations in the attached figures are explained as follows:

[0031] 01-Electrode; 1-Transmission mechanism; 11-First roller body; 2-Correction mechanism; 21-Second roller body; 22-Blocking component; 221-First stop block; 2211-Sub-stop block; 222-Second stop block; 3-Blowing mechanism; 4-Pressure holding mechanism. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] 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 illustrates that the electrode transfer and correction device includes a transfer mechanism 1 and a correction mechanism 2. The transfer mechanism 1 has a first transfer surface B1, which is used to transfer the electrode 01 from the transfer mechanism 1 to the correction mechanism 2. The correction mechanism 2 has a second transfer surface B2, which is used to transfer the electrode 01 transferred from the first transfer surface B1. Along the traveling direction c of the electrode 01, the beginning of the second transfer surface B2 is higher than the end of the first transfer surface B1. It should be understood that "beginning" refers to the end along direction c where the transfer mechanism 1 and the correction mechanism 2 first contact the electrode 01; similarly, "end" refers to the end along direction c where the transfer mechanism 1 and the correction mechanism 2 last contact the electrode 01.

[0034] It should be noted that the electrode transmission and correction device provided in this application provides a height difference between the transmission mechanism 1 and the correction mechanism 2 by setting the first end of the second transmission surface B2 higher than the tail end of the first transmission surface B1. This allows the electrode 01 to be transmitted from the transmission mechanism 1 to the correction mechanism 2 along direction c, so that the subsequent electrode 01 can be transmitted as follows: Figure 2 The electrode is inserted below the preceding electrode 01 on the second transmission surface B2. At this time, the preceding electrode 01 and the following electrode 01 on the second transmission surface B2 are partially stacked, and each electrode 01 no longer occupies the entire electrode area on the second transmission surface B2 alone, thereby improving transmission efficiency.

[0035] It should be understood that the form of electrode 01 during transmission between transmission mechanism 1 and correction mechanism 2 is not limited to... Figure 2 The shape shown is for illustrative purposes only. Because the electrode 01 has a certain degree of flexibility, it will undergo a certain deformation during transmission between the transmission mechanism 1 and the correction mechanism 2, which is not shown here.

[0036] It is worth noting that the structures of the first transmission surface B1 in the transmission mechanism 1 and the second transmission surface B2 in the correction mechanism 2 are not limited to... Figure 2The structure shown is as follows. The first transmission surface B1 can be a horizontal transmission surface or an inclined transmission surface with an angle to the ground. Similarly, the second transmission surface B2 can be a horizontal transmission surface or an inclined transmission surface with an angle to the ground.

[0037] In some embodiments, along the traveling direction c of the electrode 01, the tail end of the first transmission surface B1 is not lower than the head end of the first transmission surface B1. It should be noted that when the tail end of the first transmission surface B1 is not lower than the head end of the first transmission surface B1, this structural arrangement allows the electrode 01 to have a better deformation posture during transmission between the transmission mechanism 1 and the correction mechanism 2, so that the electrode 01 can be inserted more smoothly below the previous electrode 01 on the second transmission surface B2.

[0038] Specifically, in one implementation, the first transmission surface B1 is as follows: Figure 2 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 3 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.

[0039] To facilitate the description of the structural relationship between the first transmission surface B1 and the second transmission surface B2, we will now take the first transmission surface B1 as an example. Figure 2 The horizontal transmission surface shown is such that the second transmission surface B2 is as follows: Figure 2 The horizontal transmission surface shown is used as an example for illustration.

[0040] Please refer to Figure 2 In one embodiment of the structure shown, 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 affects the transmission posture of the electrode 01 between the transmission mechanism 1 and the correction mechanism 2.

[0041] Please refer to the following: Figure 4In 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.

[0042] 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.

[0043] For example, h is selected as 3mm to 4mm and L as 0 to 8mm. It should be noted that when h and L are set within the above range, the transmission posture of electrode 01 is better when it is transmitted between transmission mechanism 1 and correction mechanism 2, and the subsequent electrode 01 can be better inserted between the previous electrode 01 and the second transmission surface B2.

[0044] In one embodiment, such as Figure 5 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In one embodiment of this application, the example is given where the transmission mechanism 1 includes a plurality of parallel first rollers 11, and the correction mechanism 2 includes a plurality of parallel second rollers 21. The correction mechanism 2 in the electrode transmission and correction device provided in this embodiment further includes a blocking member 22. Please refer to... Figure 6 The structure shown has a blocking member 22 disposed on the side of the second transmission surface B2 away from the first transmission surface B1 and along the edge of the second transmission surface B2, for limiting at least one corner of the electrode 01.

[0051] In one specific implementation, please refer to [link / reference]. Figure 6 The structure shown includes a first block 221 and a second block 222. The first block 221 is disposed along the first edge of the second transmission surface B2, and the second block 222 is disposed 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.

[0052] Specifically, taking the first stop 221 set along the Y direction and the second stop 222 set along the X direction as an example, the transmission process of the electrode 01 is as follows: First, the transmission mechanism 1 transmits the electrode 01 along direction c to the second transmission surface B2 of the correction mechanism 2. Then, the second transmission surface B2 is used to transmit the electrode 01 in an inclined direction (inclined from the X direction to the Y direction) to the blocking member 22 for positioning. It should be understood that the electrode 01 on the second transmission surface B2 includes an X-direction velocity and a Y-direction velocity. The first stop 221 and the second stop 222 cooperate to align at least one foot of the electrode 01.

[0053] It is worth noting that if the included angle θ between the first roller 11 and the second roller 21 is too small or too large, it can easily cause the electrode 01 to move too fast in one direction in the X or Y direction, resulting in alignment failure or a long alignment time. In this embodiment, the included angle θ is set to a range of 30° to 60°, which can ensure the alignment efficiency of the electrode 01 and enable the electrode 01 to be aligned quickly.

[0054] Please continue to refer to this. Figure 6 In the structure shown, since the dimension of the electrode 01 along the Y direction is larger than its dimension along the X direction, the dimension of the first stop 221 along the Y direction can be set to be larger than the dimension of the second stop 222 along the X direction. Alternatively, the first stop 221 can be configured to include at least two sub-stops 2211, and the at least two sub-stops 2211 are spaced apart along the first edge. For example, as shown... Figure 7 As shown, the two sub-blocks 2211 are spaced apart along the Y direction.

[0055] In one embodiment, such as Figure 8 As shown, at least a portion of the blocking member 22 is retractable relative to the second transmission surface B2 along the vertical direction d. It should be understood that, due to the angle, Figure 8 Only the first stop 221 is shown in the image.

[0056] It should be noted that at least a portion of the blocking member 22 in the electrode transfer correction device provided in this application embodiment can be extended or retracted along the direction perpendicular to the second transfer surface B2. Specifically, in conjunction with the extension or retraction operation, the blocking member 22 can block the electrode 01 during the correction process to prevent the electrode 01 from flying out. At the same time, when the electrode 01 is subsequently bonded, the height m of the blocking member 22 extending beyond the second transfer surface B2 can be shortened to avoid it.

[0057] Therefore, the electrode transfer and correction device provided in this application embodiment can improve the stability of the device for electrode 01 transfer and correction, thereby improving production efficiency.

[0058] Specifically, the first stop 221 has a lifting position and a lowering position. When the blocking member 22 is in the lifting position, the top of the first stop 221 extends beyond the second transmission surface B2. When the first stop 221 is in the lowering position, the distance between the top of the first stop 221 and the second transmission surface B2 decreases relative to the lifting position. Specifically, the first stop 221 can be completely retracted below the second transmission surface B2, or the top of the first stop 221 can be kept slightly extending beyond the second transmission surface B2.

[0059] In one possible implementation, the subsequent bonding mechanism may include a blocking portion having a groove into which the first stop 221 is inserted. When the first stop 221 is in the lifting position, the top of the first stop 221 is inserted into the groove to form a more effective shielding of the electrode 01, preventing the electrode 01 from flying out of the correction mechanism from the top of the first stop 221, thereby avoiding downtime and improving production efficiency.

[0060] It should be understood that when the first stop 221 includes at least two sub-stops 2211, the at least two sub-stops 2211 can be driven individually by multiple drive motors to broaden the applicable scenarios. Alternatively, the at least two sub-stops 2211 can be driven simultaneously by the same drive motor to simplify the overall structure.

[0061] Of course, the second stop 222 can also be controlled to extend or retract in the vertical direction d as needed, which will not be elaborated here.

[0062] In some embodiments, the electrode transfer correction apparatus provided in this application further includes, for example, Figure 9 The blowing mechanism 3 shown is illustrated. Figure 10 for Figure 9 The sectional view at point AA, combined with Figure 9 refer to Figure 10 In the intermediate structure, the air blowing mechanism 3 is located on the side of the second transmission surface B2 facing the first transmission surface B1, and is used at least to blow air onto the rear end of the electrode 01 transmitted to the second transmission surface B2, so that the subsequent electrode 01 can be smoothly inserted between the previous electrode 01 located on the second transmission surface B2 and the second transmission surface B2, thereby improving the success rate of the subsequent electrode 01 inserting into the previous electrode 01, preventing problems with the transmission pattern between the electrode 01, and improving the transmission success rate of the device. It should be understood that "front end" refers to the part along direction c where the electrode 01 first contacts the transmission mechanism 1 or the correction mechanism 2, and conversely, "rear end" refers to the part along direction c where the electrode 01 later contacts the transmission mechanism 1 or the correction mechanism 2. Of course, the air blowing mechanism 3 can be as follows: Figure 9 and Figure 10 The air blowing mechanism 3 is located between the transmission mechanism 1 and the correction mechanism 2. Of course, the air blowing mechanism 3 can also be located below the correction mechanism 2, and the air blowing mechanism 3 blows gas through the gap between the second rollers 21 for transmission.

[0063] It should be noted that the blowing mechanism 3 may include one or more blowing nozzles. In one embodiment, the blowing mechanism 3 includes multiple nozzles, which are spaced apart along the Y direction. It should be understood that, in one possible implementation, multiple nozzles can be selectively opened and closed, causing the 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 blowing mechanism 3 can be continuously opened, and the blowing volume can be controlled so that the blowing mechanism 3 continuously blows on the electrode 01, ensuring that the electrode 01 is not blown away.

[0064] It is worth noting that, in the vertical direction, the closer the air blowing mechanism 3 is to the second transmission surface B2, the greater the force exerted by the air blowing mechanism 3 on the electrode plate 01 under the same air output condition. Conversely, under the same force condition, the air output of the air blowing mechanism 3 can be reduced.

[0065] In some embodiments, the electrode transfer correction apparatus provided in this application further includes, for example, Figure 11 The pressing mechanism 4 shown is located above the first transmission surface B1. The pressing mechanism 4 has a pressing position and a lifting position. When the pressing mechanism 4 is in the pressing position, a pressing transmission space for the electrode 01 is formed between the pressing mechanism 4 and the first transmission surface B1. When the pressing mechanism 4 is in the lifting position, the electrode 01 moves out of the pressing transmission space.

[0066] It should be noted that when the electrode transfer correction device with the pressing mechanism 4 is installed, the pressing mechanism 4 moves downward until it forms a pressing transfer space with the first transfer surface B1, and the electrode 01 can move relative to the pressing transfer space along direction c; when the electrode 01 reaches the preset position, the pressing mechanism 4 releases the electrode 01; after being released, the electrode 01 moves and is corrected on the second transfer surface B2 of the correction mechanism 2.

[0067] It should be understood that when electrode 01 is partially transferred from the first transmission surface B1 to the second transmission surface B2, since electrode 01 is partially in the holding transmission space, electrode 01 only moves along direction c relative to the second transmission surface B2. When the holding mechanism 4 switches from the holding position to the lifting position, electrode 01 moves and corrects itself on the second transmission surface B2. It is worth noting that the electrode transfer and correction device provided in this application can control when electrode 01 moves and corrects itself on the second transmission surface B2 by controlling the holding time of the holding mechanism 4 on electrode 01, thereby preventing electrode 01 from flying out of the correction area, improving the stability of electrode 01 during the transmission and correction process, and thus improving the correction success rate.

[0068] For example, when the distance between the front end of the electrode 01 and the blocking member 22 located at the first edge of the second transmission surface B2 is 4-5 mm, the pressing mechanism 4 switches from the pressing position to the lifting position to release the electrode 01. Of course, since the size and material of the electrode 01 may change, the pressing mechanism 4 switches to the lifting position not only when the distance between the front end of the electrode 01 and the blocking member 22 is 4-5 mm.

[0069] In one specific embodiment, the pressing mechanism 4 includes at least two pressing members, which are spaced apart along the Y direction, and each pressing member is rotatable about its own axis. It should be noted that the pressing mechanism 4 can be configured to include only one pressing member, or two pressing members, or other numbers of pressing members, depending on the requirements. As for the form of the pressing members, they can be rubber wheels, metal wheels, or brushes; the specific configuration can be determined according to requirements and will not be elaborated further here.

[0070] In one embodiment, the position of the holding member relative to the first transmission surface B1 is adjustable along the traveling direction c of the electrode 01.

[0071] It should be noted that the position of the holding member relative to the first transmission surface B is adjustable along direction c, which makes the electrode transmission correction device provided in this application embodiment applicable to electrodes 01 of different sizes, thus broadening the application scenarios of the device.

[0072] This application also provides a battery cell forming device, which includes the electrode transfer and correction device provided by any of the above-described technical solutions.

[0073] For example, the battery cell forming equipment provided in this application includes two electrode transfer and correction devices, which are symmetrically arranged and used to transfer the first electrode and the second electrode, respectively.

[0074] It is worth noting that each cell unit includes a separator and a first electrode and a second electrode located on both sides of the separator. The first electrode and the second electrode have opposite polarities; for example, when the first electrode is a positive electrode, the second electrode is a negative electrode, and vice versa. When using the cell forming equipment provided in the embodiments of this application, two electrode transfer and correction devices can be used to transfer the first electrode and the second electrode respectively.

[0075] Of course, the cell forming equipment provided in this application embodiment may also be equipped with a bonding device to bond the first electrode and the second electrode to both sides of the separator. As for the specific structure of the bonding device, it can be set according to the requirements, and will not be described in detail here.

[0076] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. An electrode transfer correction device, characterized in that, The device includes a transmission mechanism and a calibration mechanism. The transmission mechanism has a first transmission surface for transmitting the electrode sheet from the transmission mechanism to the calibration mechanism. The calibration mechanism has a second transmission surface for transmitting the electrode sheet transmitted from the first transmission surface. Along the traveling direction of the electrode sheet, the first end of the second transmission surface is higher than the last end of the first transmission surface, so that a subsequent electrode sheet can be inserted between a preceding electrode sheet located on the second transmission surface and the second transmission surface, resulting in partial stacking of the preceding and subsequent electrode sheets on the second transmission surface. The second transmission surface transmits the electrode sheet in an inclined direction. In the vertical direction, there is a height difference h between the tail end of the first transmission surface and the head end of the second transmission surface; in the horizontal direction, there is a gap L between the tail end of the first transmission surface and the head end of the second transmission surface. The gap L and the height difference h are configured to change the degree of suspension of the electrode when it is transmitted between the transmission mechanism and the correction mechanism. Along the traveling direction of the electrode, the tail end of the first transmission surface is higher than the head end of the first transmission surface; It also includes a holding mechanism disposed above the transmission mechanism. The holding mechanism has a holding position and a lifting position. When the holding mechanism is in the holding position, a holding and transmission space for the electrode is formed between the holding mechanism and the first transmission surface, so that when the electrode is partially transmitted from the first transmission surface to the second transmission surface, the electrode is partially in the holding and transmission space, and the electrode moves forward only relative to the second transmission surface. When the holding mechanism is in the lifting position, the electrode moves out of the holding and transmission space and moves and corrects itself on the second transmission surface.

2. The electrode transfer correction device according to claim 1, characterized in that, The first transmission surface is a horizontal transmission surface; the second transmission surface is a horizontal transmission surface.

3. The electrode transfer correction device according to claim 2, characterized in that, In the vertical direction, there is a height difference h between the tail end of the first transmission surface and the head end of the second transmission surface, where h ranges from 2mm to 10mm.

4. The electrode transfer correction device according to claim 3, characterized in that, Along the horizontal direction, there is a gap L between the tail end of the first transmission surface and the head end of the second transmission surface, where L ranges from 0 mm to 10 mm.

5. The electrode transfer correction device according to claim 4, characterized in that, The transmission mechanism includes a plurality of parallel first rollers, which together form the first transmission surface; the correction mechanism includes a plurality of parallel second rollers, which together form the second transmission surface, and the extension direction of the second rollers forms a certain angle with the extension direction of the first rollers.

6. The electrode transfer correction device according to any one of claims 1-5, characterized in that, The correction mechanism further includes a blocking member disposed on the side of the second transmission surface away from the first transmission surface; the blocking member is disposed along the edge of the second transmission surface to limit at least one corner of the electrode.

7. The electrode transfer correction device according to claim 6, characterized in that, It also includes an air blowing mechanism located on the side of the second transmission surface facing the first transmission surface, and the air blowing mechanism is used to blow air onto the rear end of the electrode sheet transmitted to the second transmission surface.

8. A battery cell forming equipment, characterized in that, Includes the electrode transmission correction device as described in any one of claims 1-7.

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