A pole piece processing device and battery cell production equipment

Abstract

The present invention provides a pole piece processing device and a battery cell production equipment, which relate to the field of battery technology. The pole piece processing device includes two symmetrically arranged processing components, and the two processing components are spaced apart to form a processing space for the pole piece to pass through. The processing component includes a limiting body, a first air nozzle and a second air nozzle; a first processing area and a second processing area are formed on the limiting body, and the first processing area and the second processing area correspond to two coating areas respectively; the air outlet end of the first air nozzle is exposed from the first processing area, and the air outlet end of the second air nozzle is exposed from the second processing area. The air outlet direction of the first air nozzle is opposite to the air outlet direction of the second air nozzle, and is used to provide airflow away from the blank area to the two coating areas respectively. The battery cell production equipment provided by the present invention adopts the above-mentioned pole piece processing device. The pole piece processing device and battery cell production equipment provided by the present invention can improve the technical problem that the middle blank area is easily deformed, resulting in the product quality and qualified rate being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a pole piece processing device and a battery cell production device. Background Art

[0002] In the production process of lithium battery cells, there is an indispensable coating process. The main process flow of the coating process is unwinding, coating, baking and winding.

[0003] Baking is an indispensable process. The baking temperature is usually 70-140°. During the baking process, the wet slurry and foil will shrink, but due to the different shrinkage characteristics of the two materials, the blank area in the middle is prone to deformation, and then wrinkles when passing through the roller, which will affect the subsequent process of tape breaking, foil wrinkling, and tab folding, affecting product quality and qualified rate. Summary of the invention

[0004] The purpose of the present invention includes providing a pole piece processing device, which can improve the technical problem that the middle blank area is easily deformed, which affects the product quality and qualified rate.

[0005] The purpose of the present invention also includes providing a battery cell production device that can improve the technical problem that the middle blank area is easily deformed, which affects the product quality and pass rate.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] An embodiment of the present invention provides a pole piece processing device for processing a pole piece, wherein the pole piece is provided with at least two coating areas and a blank area between the two coating areas, and the pole piece processing device comprises two symmetrically arranged processing components, and the two processing components are spaced apart to form a processing space for the pole piece to pass through;

[0008] The processing assembly includes a limiting body, a first air nozzle and a second air nozzle; the limiting body is used to form a first processing area and a second processing area on one side of the processing space, and the first processing area and the second processing area are used to correspond to the two coating areas on the electrode piece respectively; the first air nozzle and the second air nozzle are both arranged on the limiting body, and the air outlet end of the first air nozzle is exposed from the first processing area, and the air outlet end of the second air nozzle is exposed from the second processing area;

[0009] The air outlet direction of the first air nozzle is opposite to the air outlet direction of the second air nozzle, and is used to provide airflow away from the blank area to the two coating areas respectively.

[0010] Optionally, the first air nozzle and the second air nozzle are symmetrically arranged.

[0011] Optionally, a first avoidance groove is formed on the limiting body, the first avoidance groove is arranged in the first processing area, and the first air nozzle passes through the first avoidance groove and emerges from the first processing area;

[0012] And / or, a second avoidance groove is formed on the limiting body, the second avoidance groove is arranged in the second processing area, and the second air nozzle passes through the second avoidance groove and emerges from the second processing area.

[0013] Optionally, there are multiple first air nozzles, and the multiple first air nozzles are arranged in a straight line at intervals;

[0014] And / or, there are multiple second air nozzles, and the multiple second air nozzles are arranged in a straight line at intervals.

[0015] Optionally, the arrangement direction of the plurality of first air nozzles is perpendicular to the moving direction of the pole piece; the arrangement direction of the plurality of second air nozzles is perpendicular to the moving direction of the pole piece.

[0016] Optionally, the processing component further includes a plurality of rollable balls; the plurality of balls are protrudingly disposed on the side of the limiting body to form the processing space.

[0017] Optionally, a distance between the balls on one of the limiting bodies and the balls on the other limiting body is greater than a thickness of the pole piece.

[0018] Optionally, the processing component also includes a guide structure, which is assembled on the limiting body, and a raised guide portion is formed on the side of the limiting body for forming the processing space, and the guide portion forms a guide channel on the limiting body, and the guide channel is perpendicular to the moving direction of the pole piece; the first air nozzle and the second air nozzle are both arranged inside the guide channel.

[0019] Optionally, when a ball is provided on the limiting body, a height of the ball protruding from the limiting body is greater than a height of the guide portion protruding from the limiting body.

[0020] Optionally, the electrode processing device further comprises an assembly body, the assembly body is arranged on a side of the limiting body away from the processing space, and the first air nozzle and the second air nozzle are both assembled on the assembly body;

[0021] The guide structure comprises a connecting portion and the guide portion; the connecting portion passes through the limiting body and is connected to the assembling body.

[0022] Optionally, the pole piece processing device further comprises an adjusting member; the adjusting member passes through the assembly body and is connected to the connecting portion; the adjusting member is used to move relative to the assembly body to adjust the distance between the connecting portion and the assembly body.

[0023] Optionally, the adjusting member is threadably engaged with the connecting portion; the adjusting member is rotatably connected to the assembly body; and the adjusting member is used to rotate relative to the assembly body to adjust the distance between the connecting portion and the assembly body.

[0024] Optionally, a limiting groove is provided on the adjusting member, and the pole piece processing device further comprises a clamping member; the clamping member is fixedly connected to the assembly body, and the clamping member is clamped into the limiting groove to limit the movement of the adjusting member toward the connecting portion.

[0025] A battery cell production device includes a pole piece processing device. The pole piece processing device includes two symmetrically arranged processing components, and the two processing components are spaced apart to form a processing space for the pole piece to pass through;

[0026] The processing assembly includes a limiting body, a first air nozzle and a second air nozzle; the limiting body is used to form a first processing area and a second processing area on one side of the processing space, and the first processing area and the second processing area are used to correspond to the two coating areas on the electrode piece respectively; the first air nozzle and the second air nozzle are both assembled on the limiting body, and the air outlet end of the first air nozzle is exposed from the first processing area, and the air outlet end of the second air nozzle is exposed from the second processing area;

[0027] The air outlet direction of the first air nozzle is opposite to the air outlet direction of the second air nozzle, and is used to provide airflow away from the blank area to the two coating areas respectively.

[0028] The electrode processing device and battery cell production equipment provided by the present invention have the following beneficial effects compared with the prior art:

[0029] When the electrode piece passes through the processing space between the two processing components, the first air nozzle and the second air nozzle blow airflows to the two coating areas on the electrode piece respectively. Since the air outlet directions of the first air nozzle and the second air nozzle are opposite, and the airflow provided to the coating area is the airflow away from the blank area, when the airflow acts on the coating area, it can exert a force away from the blank area on the two coating areas, so that the blank area can be stretched through the two coating areas, so that the blank area is stretched to a flat state, eliminating the wrinkles and bends generated in the blank area. Based on this, the problem of wrinkling of the blank area on the electrode piece can be solved, and the purpose of improving the technical problem in the prior art that the middle blank area is easily deformed, resulting in the product quality and qualified rate being affected.

[0030] Furthermore, due to the symmetrical arrangement of the first air nozzle and the second air nozzle, the effect of the airflow derived from the first air nozzle on the coating area can be equivalent to the effect of the airflow derived from the second air nozzle on the coating area, which can ensure the balance of forces on the left and right sides of the electrode and ensure stable transportation of the electrode.

[0031] Furthermore, since a ball is provided on the limiting body, even when the pole piece shakes up and down, the pole piece can only contact the ball, which can prevent the pole piece from contacting the limiting body and causing wear of the pole piece, thereby improving the quality of the pole piece.

[0032] In addition, since a guide structure is provided on the limiting body to form a guide channel on one side of the limiting body for forming a processing space, the first air nozzle and the second air nozzle are arranged inside the guide channel, which is beneficial to the concentration of the airflows derived from the first air nozzle and the second air nozzle to ensure that the stretching and extension of the blank area are effectively completed, so as to efficiently achieve the purpose of improving the technical problem in the prior art that the middle blank area is easily deformed, resulting in the impact on product quality and pass rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of a pole piece processing device provided in an embodiment of the present application processing a pole piece;

[0035] Figure 2 A schematic cross-sectional view of a first viewing angle of a pole piece processing device provided in an embodiment of the present application for processing a pole piece;

[0036] Figure 3 An exploded schematic diagram of a pole piece processing device provided in an embodiment of the present application processing a pole piece;

[0037] Figure 4 A cross-sectional schematic diagram of a second viewing angle of a pole piece processing device provided in an embodiment of the present application processing a pole piece;

[0038] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at X in the middle;

[0039] Figure 6 A schematic structural diagram of a guide structure provided in an embodiment of the present application from a first viewing angle;

[0040] Figure 7A schematic structural diagram of a second viewing angle of a guide structure provided in an embodiment of the present application;

[0041] Figure 8 A schematic structural diagram of the adjustment member provided in an embodiment of the present application from a first viewing angle;

[0042] Fig. 9 This is a schematic structural diagram of the second viewing angle of the adjustment member provided in an embodiment of the present application.

[0043] Icons: 10-electrode processing device; 11-electrode; 12-coating area; 13-blank area; 14-processing component; 100-limiting body; 101-processing space; 102-first processing area; 103-second processing area; 110-first avoidance groove; 120-second avoidance groove; 130-ball; 140-matching groove; 210-first air nozzle; 220-second air nozzle; 230-assembly body; 300-guide structure; 310-guide part; 311-guide channel; 320-connecting part; 321-through hole; 400-adjusting part; 401-limiting groove; 410-knob; 420-rod; 430-limiting part; 500-clamping part. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0049] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0050] See also Figure 1 In an embodiment of the present application, a pole piece processing device 10 is provided, which is used for allowing a pole piece 11 to pass through, and processing the pole piece 11 during the passage of the pole piece 11 to eliminate the wrinkle problem of the middle blank area 13 on the pole piece 11, thereby achieving the technical problem of improving the middle blank area 13 being easily deformed, which affects the product quality and qualified rate.

[0051] It is worth noting that the pole piece 11 has a middle blank area 13 and two spaced coating areas 12, and the blank area 13 is located between the two coating areas 12. The direction in which the two coating areas 12 and the blank area 13 are arranged in sequence is the transverse direction of the pole piece 11, and the direction perpendicular to the transverse direction is the longitudinal direction of the pole piece 11. Figure 1 The direction indicated by the arrow B in the figure is the lateral direction of the pole piece, and the direction indicated by the arrow A is the longitudinal direction of the pole piece. The pole piece 11 enters the processing space 101 along its longitudinal direction. The lateral directions mentioned in the embodiments of the present application all refer to the directions indicated by the arrow B above, and similarly, the longitudinal directions mentioned all refer to the directions indicated by the arrow A above.

[0052] In this embodiment, the electrode processing device 10 includes two symmetrically arranged processing components 14, and the two processing components 14 are spaced apart to form a processing space 101 for the electrode 11 to pass through. When the electrode 11 passes through the processing space 101, the two processing components 14 are respectively located on two opposite sides of the electrode 11 in the thickness direction, and the two processing components 14 act on the two sides of the electrode 11 in the thickness direction to eliminate the wrinkle problem of the blank area 13 in the middle of the electrode 11. Since the two processing components 14 are symmetrically arranged, that is, the structures of the two processing components 14 are the same, one of the processing components 14 is taken as an example for description.

[0053] Please refer to Figure 2 and Figure 3, the processing component 14 includes a limiting body 100, a first air nozzle 210 and a second air nozzle 220. The limiting body 100 is used to form a first processing area 102 and a second processing area 103 on one side of the processing space 101, and the first processing area 102 and the second processing area 103 are used to correspond to the two coating areas 12 on the pole piece 11 respectively; the first air nozzle 210 and the second air nozzle 220 are both arranged on the limiting body 100, and the air outlet end of the first air nozzle 210 is exposed from the first processing area 102, and the air outlet end of the second air nozzle 220 is exposed from the second processing area 103. The air outlet direction of the first air nozzle 210 is opposite to that of the second air nozzle 220, and is used to provide airflow away from the blank area 13 to the two coating areas 12 respectively. It is worth noting that the solid arrows in the first air nozzle 210 and the second air nozzle 220 in the figure and the solid arrows in the processing space 101 all indicate the flow direction of the airflow.

[0054] When the pole piece 11 enters the processing space 101, the two coating areas 12 correspond to the first processing area 102 and the second processing area 103 respectively. When the first air nozzle 210 and the second air nozzle 220 are both started, the airflow derived from the first air nozzle 210 can act on the coating area 12 corresponding to the first processing area 102, and the airflow derived from the second air nozzle 220 can act on the coating area 12 corresponding to the second processing area 103. Since the air outlet direction of the first air nozzle 210 and the air outlet direction of the second air nozzle 220 are opposite, the first air nozzle 210 can provide a force to move away from the blank area 13 to the corresponding coating area 12, and the second air nozzle 220 can provide a force to move away from the blank area 13 to the corresponding coating area 12. In general, the pole piece 11 can be provided with a horizontal extension effect to both sides, so that the blank area 13 is stretched flat, so as to eliminate the wrinkles in the middle blank area 13.

[0055] It should be noted that the opposite direction of the air outlet direction of the first air nozzle 210 and the second air nozzle 220 means that when the first air nozzle 210 and the second air nozzle 220 are discharging air, the airflow generated by the first air nozzle 210 and the airflow generated by the second air nozzle 220 flow to the two sides of the pole piece 11 in the transverse direction of the pole piece 11 respectively; that is, the first air nozzle 210 and the second air nozzle 220 are respectively arranged to be biased to the two sides of the transverse direction of the pole piece 11, or the air outlet end of the first air nozzle 210 and the air outlet end of the second air nozzle 220 are biased in opposite directions, that is, the air outlet end of the first air nozzle 210 is deflected toward the side away from the second air nozzle 220, and the air outlet end of the second air nozzle 220 is deflected toward the side away from the first air nozzle 210. Based on this, when the airflow generated by the first air nozzle 210 and the airflow generated by the second air nozzle 220 act on the pole piece 11, the pole piece 11 will be pulled to both sides in the transverse direction, so that the blank area 13 in the middle can be extended and the wrinkle problem can be eliminated.

[0056] In addition, due to the relative arrangement of the two processing components 14, the pole piece 11 can be stretched from both sides of the thickness direction of the pole piece 11 at the same time, which can ensure that the pole piece 11 is evenly stressed and improve the effect of eliminating wrinkles. In addition, since the pole piece processing device 10 provided in the present application provides a force to the pole piece 11 by airflow, compared with the stretching and extension of the pole piece 11 achieved by the pressure roller, the wind pressure of the first air nozzle 210 and the second air nozzle 220 can be adjusted according to the actual situation of the pole piece 11, so that the force acting on the pole piece 11 can be conveniently adjusted to facilitate adapting to pole pieces 11 of various models and specifications, preventing the pole piece 11 from being damaged due to excessive adjustment force, and preventing the pole piece 11 from being damaged due to excessive adjustment force, and preventing the wrinkle removal effect from being poor due to insufficient adjustment force; in other words, the success rate of eliminating wrinkles can be improved, and the yield rate can be improved. Furthermore, since the electrode 11 is stretched and extended by airflow, if there are no wrinkles on the blank area 13 of the electrode 11 before entering the processing space 101, the airflow is blown out directly, and the electrode 11 will not be stretched and extended to damage. However, the use of a pressure roller or the like can easily cause the electrode 11 to be stretched and extended by force or cause friction with the electrode 11, resulting in damage to the electrode 11.

[0057] Optionally, in an embodiment of the present application, the first air nozzle 210 and the second air nozzle 220 are symmetrically arranged. Based on this, the angle formed by the airflow direction generated by the first air nozzle 210 and the pole piece 11 is the same as the angle formed by the airflow direction generated by the second air nozzle 220 and the pole piece 11. When the air pressure of the airflow derived from the first air nozzle 210 is the same as the air pressure of the airflow derived from the second air nozzle 220, the force effect on both sides of the pole piece 11 in the transverse direction is equivalent, so that the force on the pole piece 11 in the transverse direction is balanced, which can ensure the stable transportation of the pole piece 11 in the longitudinal direction. Furthermore, the first air nozzle 210 and the second air nozzle 220 can be connected to the same air pressure device, which can reduce costs.

[0058] Of course, in other embodiments of the present application, the first air nozzle 210 and the second air nozzle 220 may also be arranged asymmetrically. In this case, the direction in which the airflow derived from the first air nozzle 210 acts on the pole piece 11 and the direction in which the airflow derived from the second air nozzle 220 acts on the pole piece 11 may be different; at this time, in order to achieve a balanced force on the pole piece 11 in the lateral direction, it is necessary to connect the first air nozzle 210 and the second air nozzle 220 to different air pressure devices to adjust the air pressure introduced into the first air nozzle 210 and the second air nozzle 220 by the two air pressure devices respectively, so as to ensure the balanced force on the pole piece 11 in the lateral direction.

[0059] It should be understood that in other embodiments of the present application, when the first air nozzle 210 and the second air nozzle 220 are asymmetric, the first air nozzle 210 and the second air nozzle 220 may also be connected to different air pressure devices.

[0060] Optionally, a first avoidance groove 110 is provided on the limiting body 100, the first avoidance groove 110 is arranged in the first processing area 102, and the first air nozzle 210 passes through the first avoidance groove 110 and is exposed from the first processing area 102. And / or, a second avoidance groove 120 is provided on the limiting body 100, the second avoidance groove 120 is arranged in the second processing area 103, and the second air nozzle 220 passes through the second avoidance groove 120 and is exposed from the second processing area 103. Among them, "and / or" means that the first avoidance groove 110 can be provided only in the first processing area 102; the second avoidance groove 120 can also be provided only in the second processing area 103; and the first avoidance groove 110 can also be provided in the first processing area 102, and the second avoidance groove 120 can be provided in the second processing area 103 as in the embodiment of the present application.

[0061] It is worth noting that the first avoidance groove 110 penetrates the limiting body 100 along the thickness direction of the limiting body 100 to facilitate the first air nozzle 210 to access the processing space 101 from the outside of the processing space 101; similarly, the second avoidance groove 120 penetrates the limiting body 100 along the thickness direction of the limiting body 100 to facilitate the second air nozzle 220 to access the processing space 101 from the outside of the processing space 101.

[0062] In other embodiments of the present application, the first air nozzle 210 and the second air nozzle 220 may be arranged differently. For example, the first air nozzle 210 and the second air nozzle 220 are integrally formed, and in this case, the first air nozzle 210 and the second air nozzle 220 may be channels opened on the limiting body 100.

[0063] In addition, the first avoidance groove 110 and the second avoidance groove 120 may be groove bodies connected in the transverse direction, and the portion of the groove body corresponding to the first processing area 102 is the first avoidance groove 110, and the portion corresponding to the second processing area 103 is the second avoidance groove 120. Of course, in other embodiments, the first avoidance groove 110 and the second avoidance groove 120 may also be two groove bodies spaced apart on the limiting body 100.

[0064] Optionally, there are multiple first air nozzles 210, and the multiple first air nozzles 210 are arranged at intervals along a straight line. And / or, there are multiple second air nozzles 220, and the multiple second air nozzles 220 are arranged at intervals along a straight line. "And / or" means that there may be multiple first air nozzles 210, and the multiple first air nozzles 210 are arranged at intervals along a straight line; there may also be multiple second air nozzles 220, and the multiple second air nozzles 220 are arranged at intervals along a straight line; and as in the embodiment of the present application, there may be multiple first air nozzles 210 and multiple second air nozzles 220, and the multiple first air nozzles 210 are arranged at intervals along a straight line, and the multiple second air nozzles 220 are arranged at intervals along a straight line.

[0065] When multiple first air nozzles 210 and multiple second air nozzles 220 are set, multiple first air nozzles 210 simultaneously guide the airflow to the coating area 12, which can ensure that the coating area 12 can be fully affected by the force of the airflow in the lateral direction. It can not only enhance the force acting on the coating area 12 and thus enhance the extension effect of the blank area 13, but also prevent the coating area 12 from being wrinkled due to local force.

[0066] It is worth noting that, in this embodiment, optionally, the arrangement direction of the plurality of first air nozzles 210 is perpendicular to the moving direction of the pole piece 11; the arrangement direction of the plurality of second air nozzles 220 is perpendicular to the moving direction of the pole piece 11. In other words, the arrangement path of the plurality of first air nozzles 210 and the arrangement path of the plurality of second air nozzles 220 are in the same straight line, so that the forces on the two coating areas 12 on the pole piece 11 can be symmetrical, and the asymmetric forces on the two coating areas 12 on the pole piece 11 can be prevented, which causes the pole piece 11 to twist and produce wrinkles.

[0067] It should be understood that in other embodiments of the present application, the arrangement of the plurality of first air nozzles 210 and the arrangement of the plurality of second air nozzles 220 may also be in other ways. For example, the arrangement path of the plurality of first air nozzles 210 is a straight line, the arrangement path of the plurality of second air nozzles 220 is a straight line, the arrangement path of the plurality of first air nozzles 210 and the arrangement path of the plurality of second air nozzles 220 are arranged at an angle, and the angle may be an acute angle, an obtuse angle or a right angle; of course, the arrangement path of the plurality of first air nozzles 210 and the arrangement path of the plurality of second air nozzles 220 may also be arranged in parallel; in this case, the arrangement direction of the plurality of first air nozzles 210 and the arrangement direction of the plurality of second air nozzles 220 are both at an acute angle or parallel to the moving direction of the pole piece 11. For another example, the arrangement path of the plurality of first air nozzles 210 is a broken line, a circular path, a square path, an arc path or a serpentine path, etc.

[0068] In this embodiment, please refer to Figure 3 and Figure 4 The processing assembly 14 further includes a plurality of rolling balls 130; the plurality of balls 130 are protrudingly disposed on the side of the limiting body 100 for forming the processing space 101. Since the balls 130 can rotate freely relative to the limiting body 100, when the pole piece 11 swings up and down in the processing space 101, the pole piece 11 can be contacted by the balls 130, and the rotation of the balls 130 facilitates the transportation of the pole piece 11 in the longitudinal direction. This can prevent the pole piece 11 from directly contacting the limiting body 100 and causing wear of the pole piece 11.

[0069] It is worth noting that since the rotation direction of the ball 130 is universal, that is, it can not only rotate in the longitudinal direction of the pole piece 11 to prevent damage to the pole piece 11, but also provide a rotation effect when the coating area 12 is extended in the transverse direction to prevent the coating area 12 from being worn and scratched.

[0070] Optionally, the distance between the ball 130 on one limiting body 100 and the ball 130 on the other limiting body 100 is greater than the thickness of the pole piece 11. That is to say, when two symmetrically arranged processing components 14 form a processing space 101, the height of the processing space 101 in the thickness direction of the pole piece 11 is greater than the thickness of the pole piece 11. The pole piece 11 will not be pressed by the two processing components 14, which facilitates the airflow to directly provide force to the pole piece 11 and facilitates the blank area 13 to be stretched and flattened. It is worth noting that the thickness of the processing space 101 can also be adjusted by adjusting the distance between the two processing components 14, so that the pole piece processing device 10 can be adapted to pole pieces 11 of various thicknesses.

[0071] Among them, a plurality of balls 130 are arranged on the limiting body 100, and the plurality of balls 130 protrude from the limiting body 100 at the same height, and each ball 130 has a contact point at one end protruding from the limiting body 100, thereby making the plurality of contact points of the plurality of balls 130 form a contact surface on one side of the protruding limiting body 100, and two contact surfaces arranged oppositely are formed on the two processing components 14, and the processing space 101 can be regarded as formed between the two contact surfaces. It is worth noting that since the pole piece 11 has a certain flexibility, the pole piece 11 may pass through the contact surface when deformed by the impact of airflow, based on this, the distance between adjacent balls 130 can be adjusted to prevent the pole piece 11 from contacting the limiting body 100.

[0072] It is worth noting that in this embodiment, the first avoidance groove 110 and the second avoidance groove 120 are arranged in the middle of the limiting body 100 in the longitudinal direction, so that the first air nozzle 210 and the second air nozzle 220 extend from the middle of the limiting body 100, and the air outlet end of the first air nozzle 210 and the air outlet end of the second air nozzle 220 are both located in the middle of the arrangement range of the multiple balls 130.

[0073] Among them, in this embodiment, the first air nozzle 210 and the second air nozzle 220 are both arranged in the form of an air outlet pipe. In other words, the inner diameter of the internal channel of the first air nozzle 210 and the inner diameter of the second air nozzle 220 are relatively small, so that the air pressure and flow rate of the airflow derived from the first air nozzle 210 and the second air nozzle 220 can be easily adjusted. However, it is necessary to set a plurality of first air nozzles 210 and a plurality of second air nozzles 220 to achieve uniform application of force to the coating area 12. In other embodiments, the first air nozzle 210 and the second air nozzle 220 can also use ventilation structures with other inner diameters to stretch the pole piece 11. In the case of using the first air nozzle 210 and the second air nozzle 220 with a larger air outlet area, the number of the balls 130 can be reduced to prevent the pole piece 11 from contacting the limiting body 100 at the entrance to the processing area and the exit from the processing space 101, resulting in wear. Of course, when the arrangement range of the first tubular air nozzle 210 and the second air nozzle 220 is relatively large, the number of the balls 130 can also be reduced, or even the balls 130 can be eliminated.

[0074] In this embodiment, please refer to Figure 5 and Figure 6 The processing component 14 also includes a guide structure 300, which is assembled on the limiting body 100, and a protruding guide portion 310 is formed on the side of the limiting body 100 for forming the processing space 101. The guide portion 310 forms a guide channel 311 on the limiting body 100, and the guide channel 311 is perpendicular to the moving direction of the pole piece 11; the first air nozzle 210 and the second air nozzle 220 are both arranged inside the guide channel 311.

[0075] The guide portion 310 is a strip-shaped protruding structure extending in a straight line, and since the first air nozzle 210 and the second air nozzle 220 in this embodiment are arranged in a straight line, the guide portion 310 forms a guide channel 311 arranged in a straight line. The guide channel 311 can provide a guiding effect to the airflow, and for example, the concentrated flow of the airflow, thereby improving the effect of stretching and extending the blank area 13. It should be understood that in other embodiments, if the arrangement of the first air nozzle 210 or the second air nozzle 220 is other types, such as circular, square or serpentine, the guide portion 310 also extends in a straight line and forms a guide channel 311 arranged in a straight line. The extension direction of the guide channel 311 is the same as the direction of the force provided when the airflow acts on the coating area 12, and the guide channel 311 includes at least part of the first air nozzle 210 and at least part of the second air nozzle 220. That is to say, multiple guide channels 311 can also be provided to guide the airflow.

[0076] Optionally, when the ball 130 is disposed on the limiting body 100, the height of the ball 130 protruding from the limiting body 100 is greater than the height of the guide portion 310 protruding from the limiting body 100; that is, it can be regarded that the distance between the ball 130 and the pole piece 11 is less than the distance between the guide portion 310 and the pole piece 11. Figure 5 The distance C refers to the distance between the ball 130 and the pole piece 11, and the distance D refers to the distance between the guide portion 310 and the pole piece 11. It is worth noting that when the protrusion heights of the ball 130 and the guide portion 310 are compared with the pole piece 11 as a reference, the pole piece 11 is in a state parallel to the contact surface, that is, the pole piece 11 is flat and the distances from the two processing components 14 are the same. Based on this, even if the pole piece 11 shakes up and down, the pole piece 11 will preferentially contact the ball 130 to prevent the pole piece 11 from contacting the guide portion 310 and being scratched or worn.

[0077] In addition, a rounded corner may be provided on the side of the guide portion 310 close to the pole piece 11 to reduce the sharpness of the side of the guide portion 310 close to the pole piece 11, thereby preventing the pole piece 11 from being worn or scratched.

[0078] In this embodiment, please refer to Figure 4 and Figure 6 The electrode processing device 10 further includes an assembly body 230, which is disposed on a side of the limiting body 100 away from the processing space 101, and the first air nozzle 210 and the second air nozzle 220 are both assembled on the assembly body 230. In other words, the assembly body 230 can serve as a bearing structure for the first air nozzle 210 and the second air nozzle 220 to ensure the stability of the first air nozzle 210 and the second air nozzle 220. The guide structure 300 includes a connecting portion 320 and a guiding portion 310; the connecting portion 320 passes through the limiting body 100 and is connected to the assembly body 230.

[0079] Among them, two connecting parts 320 corresponding to the first avoidance groove 110 and the second avoidance groove 120 can be provided on the guide structure 300, that is, the two connecting parts 320 pass through the first avoidance groove 110 and the second avoidance groove 120 respectively to connect with the assembly body 230. Among them, the connecting part 320 in the first avoidance groove 110 is used as an example for description. If the space in the first avoidance groove 110 occupied by the connecting part 320 is provided with a corresponding first air nozzle 210, a through hole 321 for the first air nozzle 210 to pass through is opened on the connecting part 320. Of course, the first air nozzle 210 can also pass through from both sides of the connecting part 320.

[0080] In addition, the guide portion 310 is a strip-shaped structure extending along the branch line, so that the guide portion 310 is U-shaped in the horizontal direction. Figure 7When assembling the guide structure 300, the connecting portion 320 is installed into the first avoidance groove 110 from the side of the limiting body 100 where the ball 130 is provided, so that the connecting portion 320 passes through the first avoidance groove 110 and is connected to the assembly body 230, and the guiding portion 310 forms a guiding channel 311 on the side of the limiting body 100 where the processing space 101 is formed.

[0081] Optionally, a matching groove 140 is provided on one side of the limiting body 100 for forming the processing space 101, and the guide portion 310 is disposed inside the matching groove 140, and the guide portion 310 is attached to the side wall of the matching groove 140. The provision of the matching groove 140 can provide positioning and limiting functions for the guide portion 310, thereby improving the overall stability of the guide portion 310.

[0082] In this embodiment, the electrode processing device 10 further includes an adjusting member 400; the adjusting member 400 passes through the assembly body 230 and is connected to the connecting portion 320; the adjusting member 400 is used to move relative to the assembly body 230 to adjust the distance between the connecting portion 320 and the assembly body 230. The height of the guide portion 310 protruding from the limiting body 100 can be adjusted by the adjusting member 400, and then the height of the guide channel 311 can be adjusted, so that the airflow guidance can be adjusted according to the actual situation, and the effect of stretching and extending the blank area 13 can be improved.

[0083] It is worth noting that, due to the provision of the matching groove 140 , even after the height of the guide portion 310 is adjusted, no gap is formed between the guide portion 310 and the limiting body 100 , thereby preventing air leakage in the guide channel 311 .

[0084] It should be understood that in other embodiments of the present application, the adjustment member 400 may also be omitted.

[0085] In this embodiment, please refer to Figure 4 , Figure 8 and Fig. 9 , the adjusting member 400 is threadedly matched with the connecting portion 320; the adjusting member 400 is rotatably connected to the assembly body 230; the adjusting member 400 is used to rotate relative to the assembly body 230 to adjust the distance between the connecting portion 320 and the assembly body 230. Among them, since the height of the guide portion 310 protruding on the limiting body 100 is relatively low, the thickness of the pole piece 11 is relatively small, and the thickness of the processing space 101 in the thickness direction of the pole piece 11 is also relatively small, therefore, the height adjustment range of the guide portion 310 is also relatively small, and the use of a threaded connection method can improve the convenience of adjusting the height of the guide portion 310.

[0086] In addition, a limiting groove 401 is provided on the adjusting member 400, and the electrode processing device 10 further includes a clamping member 500; the clamping member 500 is fixedly connected to the assembly body 230, and the clamping member 500 is clamped into the limiting groove 401 to limit the movement of the adjusting member 400 toward the connecting portion 320. In this embodiment, the adjusting member 400 includes a knob 410, a rod 420 and a limiting portion 430; the rod 420 passes through the assembly body 230 and is threadedly engaged with the connecting portion 320, and the knob 410 is provided at one end of the rod 420 that is exposed outside the assembly body 230. The limiting portion 430 is convexly provided on the rod 420 to form a limiting groove 401 on the outer periphery of the rod 420 on a side of the rod 420 close to the knob 410. When the clamping member 500 is inserted into the limiting groove 401, the rod 420 cannot be displaced along its axial direction. Based on this, when the rod 420 is rotated by the knob 410, the threaded cooperation between the rod 420 and the connecting portion 320 can make the connecting portion 320 move along the rod 420, so as to achieve the purpose of adjusting the height of the guide portion 310 protruding from the limiting body 100. It is worth noting that since the clamping member 500 fixes the adjusting member 400 by cooperating with the limiting groove 401, the sensitivity of the adjusting guide portion 310 can be ensured. Of course, in order to facilitate the cooperation with the limiting groove 401, a U-shaped groove is provided on the clamping member 500, and the rod 420 can be inserted into the U-shaped groove, so that the limiting portion 430 is abutted against the clamping member 500.

[0087] It should be understood that in other embodiments, the setting of the limiting portion 430 can be eliminated, and the radial limiting groove 401 can be directly opened on the rod portion 420. Similarly, the limiting effect of the adjusting member 400 can be achieved through the limiting groove 401 and the clamping member 500.

[0088] Based on the above-mentioned electrode processing device 10, a battery cell production equipment (not shown) is also provided in the embodiment of the present application. The battery cell production equipment adopts the above-mentioned electrode processing device 10. Therefore, the battery cell production equipment can achieve the purpose of improving the technical problem that the middle blank area 13 is easily deformed, which affects the product quality and pass rate.

[0089] In summary, in the electrode processing device 10 and the battery cell production equipment provided by the embodiment of the present application, when the electrode 11 passes through the processing space 101 between the two processing components 14, the first air nozzle 210 and the second air nozzle 220 blow airflows to the two coating areas 12 on the electrode 11 respectively. Since the air outlet directions of the first air nozzle 210 and the second air nozzle 220 are opposite, and the airflow provided to the coating area 12 is the airflow away from the blank area 13, when the airflow acts on the coating area 12, it can apply a force away from the blank area 13 to the two coating areas 12, so that the blank area 13 can be stretched through the two coating areas 12, so that the blank area 13 is stretched to a flat state, and the wrinkles and bends generated in the blank area 13 are eliminated. Based on this, the problem of wrinkling the blank area 13 on the electrode 11 can be solved, and the purpose of improving the technical problem in the prior art that the middle blank area 13 is easily deformed, resulting in the product quality and qualified rate being affected. Since the first air nozzle 210 and the second air nozzle 220 are symmetrically arranged, the effect provided by the airflow derived from the first air nozzle 210 to the coating area 12 can be equivalent to the effect provided by the airflow derived from the second air nozzle 220 to the coating area 12, which can ensure that the force on the left and right of the pole piece 11 is balanced and the pole piece 11 is stably transported. Since the ball bearing 130 is arranged on the limiting body 100, even if the pole piece 11 shakes up and down, the pole piece 11 can only contact the ball bearing 130, which can prevent the pole piece 11 from contacting the limiting body 100 and causing the pole piece 11 to be worn, thereby improving the quality of the pole piece 11. In addition, since a guide structure 300 is provided on the limiting body 100 to form a guide channel 311 on one side of the limiting body 100 for forming the processing space 101, the first air nozzle 210 and the second air nozzle 220 are arranged inside the guide channel 311, which is beneficial to the concentration of the airflows derived from the first air nozzle 210 and the second air nozzle 220, so as to ensure that the stretching and extension of the blank area 13 are effectively completed, so as to efficiently achieve the purpose of improving the technical problem in the prior art that the middle blank area 13 is easily deformed, resulting in the product quality and qualified rate being affected.

[0090] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pole piece processing device for processing a pole piece (11), wherein the pole piece (11) is provided with at least two coating areas (12) and a blank area (13) located between the two coating areas (12), characterized in that: The pole piece processing device (10) comprises two symmetrically arranged processing components (14), wherein the two processing components (14) are spaced apart to form a processing space (101) for the pole piece (11) to pass through; The processing component (14) comprises a limiting body (100), a first air nozzle (210) and a second air nozzle (220); the limiting body (100) is used to form a first processing area (102) and a second processing area (103) on one side of the processing space (101), and the first processing area (102) and the second processing area (103) are used to respectively correspond to the two coating areas (12) on the electrode (11); the first air nozzle (210) and the second air nozzle (220) are both arranged on the limiting body (100), and the air outlet end of the first air nozzle (210) is exposed from the first processing area (102), and the air outlet end of the second air nozzle (220) is exposed from the second processing area (103); The flow direction of the airflow generated by the first air nozzle (210) forms an angle with the pole piece (11), and the flow direction of the airflow generated by the second air nozzle (220) forms an angle with the pole piece (11); the air outlet direction of the first air nozzle (210) and the air outlet direction of the second air nozzle (220) are opposite, and are used to respectively provide airflow in a direction away from the blank area (13) to the two coating areas (12); The processing assembly (14) further comprises a guide structure (300), the guide structure (300) being assembled on the limiting body (100), and a protruding guide portion (310) being formed on a side surface of the limiting body (100) for forming the processing space (101), the guide portion (310) forming a guide channel (311) on the limiting body (100), the guide channel (311) being perpendicular to a moving direction of the pole piece (11); the first air nozzle (210) and the second air nozzle (220) are both arranged inside the guide channel (311); The processing assembly (14) further comprises a plurality of rollable balls (130); the plurality of balls (130) are protrudingly arranged on a side surface of the limiting body (100) for forming the processing space (101); The height of the rolling ball (130) protruding from the limiting body (100) is greater than the height of the guiding portion (310) protruding from the limiting body (100).

2. The electrode processing device according to claim 1, characterized in that: The first air nozzle (210) and the second air nozzle (220) are symmetrically arranged.

3. The electrode processing device according to claim 1, characterized in that: The limiting body (100) is provided with a first avoidance groove (110), the first avoidance groove (110) is arranged in the first processing area (102), and the first air nozzle (210) passes through the first avoidance groove (110) and emerges from the first processing area (102); And / or, a second avoidance groove (120) is provided on the limiting body (100), the second avoidance groove (120) is arranged in the second processing area (103), and the second air nozzle (220) passes through the second avoidance groove (120) and emerges from the second processing area (103).

4. The electrode processing device according to claim 1, characterized in that: There are a plurality of the first air nozzles (210), and the plurality of the first air nozzles (210) are arranged in a straight line at intervals; And / or, there are a plurality of second air nozzles (220), and the plurality of second air nozzles (220) are arranged in a straight line at intervals.

5. The electrode processing device according to claim 4, characterized in that: The arrangement direction of the plurality of first air nozzles (210) is perpendicular to the moving direction of the pole piece (11); and the arrangement direction of the plurality of second air nozzles (220) is perpendicular to the moving direction of the pole piece (11).

6. The electrode processing device according to claim 1, characterized in that: The distance between the rolling ball (130) on one of the limiting bodies (100) and the rolling ball (130) on the other limiting body (100) is greater than the thickness of the pole piece (11).

7. The electrode processing device according to claim 1, characterized in that: The electrode processing device (10) further comprises an assembly body (230), wherein the assembly body (230) is arranged on a side of the limiting body (100) away from the processing space (101), and the first air nozzle (210) and the second air nozzle (220) are both assembled on the assembly body (230); The guide structure (300) comprises a connecting portion (320) and the guiding portion (310); the connecting portion (320) passes through the limiting body (100) and is connected to the assembly body (230).

8. The electrode processing device according to claim 7, characterized in that: The electrode processing device (10) further comprises an adjusting member (400); the adjusting member (400) passes through the assembly body (230) and is connected to the connecting portion (320); the adjusting member (400) is used to move relative to the assembly body (230) to adjust the distance between the connecting portion (320) and the assembly body (230).

9. The electrode processing device according to claim 8, characterized in that: The adjusting member (400) is threadably matched with the connecting portion (320); the adjusting member (400) is rotatably connected to the assembly body (230); and the adjusting member (400) is used to rotate relative to the assembly body (230) to adjust the distance between the connecting portion (320) and the assembly body (230).

10. The electrode processing device according to claim 9, characterized in that: The adjusting member (400) is provided with a limiting groove (401), and the pole piece processing device (10) further comprises a clamping member (500); the clamping member (500) is fixedly connected to the assembly body (230), and the clamping member (500) is clamped into the limiting groove (401) to limit the movement of the adjusting member (400) toward the connecting portion (320).

11. A battery cell production device, characterized in that: It comprises a pole piece processing device (10) as claimed in any one of claims 1 to 10.

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