Pinch mechanism of winding machine, winding machine and battery processing equipment

Abstract

The utility model embodiment provides a kind of needle clamping mechanism of winding machine, winding machine and battery processing equipment, belong to battery processing technical field.The needle clamping mechanism of winding machine includes: rack;Inner needle, is installed in rack;Outer needle, is installed in rack, and with inner needle along first direction interval open distribution;Connecting piece, along second direction movably installed in outer needle, suitable for being connected with inner needle.According to the needle clamping mechanism of winding machine provided in the application, by setting connecting piece movably installed in outer needle along second direction, one end of inner needle suspended can be connected with outer needle by connecting piece as a whole, so as to increase the stiffness of inner needle, improve the stability of inner needle, reduce the deformation risk of inner needle in the process of clamping battery cell, improve the production quality of battery cell.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, and more specifically, to a needle clamping mechanism for a winding machine, a winding machine, and battery processing equipment. Background Technology

[0002] In the battery production process, after the battery cells are wound, they are unloaded and then pre-pressed. In related technologies, battery cell winding machines typically use cantilevered inner clamping pins. These pins extend into the battery cell to clamp and unload it. However, the cantilevered inner clamping pins are relatively long, making them prone to temporary deformation when tension is applied to the battery cell. Frequent temporary deformation can easily lead to metal fatigue and permanent deformation, indicating room for improvement. Utility Model Content

[0003] This application provides a clamping needle mechanism for a winding machine, a winding machine, and battery processing equipment, which can solve the problem of easy deformation of the inner clamping needle.

[0004] In a first aspect, embodiments of this application provide a needle clamping mechanism for a winding machine, comprising:

[0005] frame;

[0006] An internal clamping pin is mounted on the frame;

[0007] The outer clamping pin is mounted on the frame and is spaced apart from the inner clamping pin along a first direction;

[0008] A connector is movably mounted on the outer clamping pin along the second direction and is adapted to connect with the inner clamping pin.

[0009] In the above technical solution, by setting the connector that is movably installed on the outer clamping pin along the second direction, one end of the inner clamping pin can be connected to the outer clamping pin as a whole through the connector, thereby increasing the rigidity of the inner clamping pin, improving the stability of the inner clamping pin, reducing the risk of deformation of the inner clamping pin during the clamping process of the battery cell, and improving the production quality of the battery cell.

[0010] In some embodiments, the connector includes:

[0011] The base body is movably mounted on the outer clamping pin along the second direction;

[0012] A connecting part is installed on the base and is adapted to be connected to the inner clamping pin.

[0013] In the above technical solution, the base is movably mounted on the outer clamping needle along the second direction, and the connecting part is mounted on the base, which can realize the connection and separation between the outer clamping needle and the inner clamping needle.

[0014] In some embodiments, the connecting portion is adjustablely mounted to the base along the first direction.

[0015] In the above technical solution, the connecting part is adjustablely mounted on the base along the first direction, and the distance between the inner clamping pin and the outer clamping pin can be adjusted to adapt to the battery cells of different thicknesses.

[0016] In some embodiments, at least one of the connecting portion and the seat body is provided with an elongated hole extending along the first direction, and the connecting portion and the seat body are connected by a fastener passing through the elongated hole;

[0017] The seat is provided with an adjusting member, which is movably installed on the seat along the first direction and abuts against the connecting part.

[0018] In the above technical solution, the relative position of the seat and the connecting part along the first direction can be adjusted by the cooperation of the adjusting member, the elongated hole and the fastener, thereby realizing the control of the distance between the inner clamping pin and the outer clamping pin after connection.

[0019] In some embodiments, the connector has a first mating structure, the inner clamping pin has a second mating structure, and the connector is adapted to drive the first mating structure to connect with the second mating structure during movement along the second direction, so that the connector and the inner clamping pin are limited along the first direction.

[0020] In the above technical solution, the connection between the first mating structure and the second mating structure can limit the position of the connector and the inner clamping needle along the first direction.

[0021] In some embodiments, the cross-sectional area of ​​the end of the connector facing the inner clamping pin is smaller than the cross-sectional area of ​​the main body portion of the connector, and the end of the connector facing the inner clamping pin is provided with a guide surface.

[0022] In the above technical solution, the cross-sectional area of ​​the end of the connector facing the inner clamping needle is smaller than the cross-sectional area of ​​the main body of the connector, which can reduce the interference when the connector and the inner clamping needle work together after mating. At the same time, the end of the connector facing the inner clamping needle is provided with the guide surface, which can effectively guide the movement trajectory of the inner clamping needle and help the inner clamping needle maintain stability during operation.

[0023] In some embodiments, the needle clamping mechanism of the winding machine further includes:

[0024] A first driving mechanism is mounted on the outer clamping pin, and its output end is connected to the connector, for driving the connector to move along the second direction.

[0025] In the above technical solution, the position of the first driving mechanism is detected by the magnetic switch connected to the host computer, and the connection status between the connector and the inner clamping pin can be monitored in real time, thereby reducing equipment failures and damages caused by improper connection and improving the accuracy and reliability of the entire system.

[0026] In some embodiments, a guide structure along the second direction is provided between the connector and the outer clamping pin.

[0027] In the above technical solution, the guide structure along the second direction is provided between the connector and the outer clamping pin, which can restrict the degree of freedom of the connector and reduce the shaking or displacement of the connector during movement.

[0028] In some embodiments, the output end of the first drive mechanism includes an output shaft, which passes through the outer clamping pin along the second direction and is connected to the connector.

[0029] The guide structure includes a guide rod assembly extending along the second direction. Of the two parts of the guide rod assembly that extend and retract relative to each other along the second direction, one part is installed on the outer clamping pin, and the other part is connected to the connector.

[0030] In the above technical solution, the output shaft and the guide rod assembly cooperate to drive the connector to move along the second direction.

[0031] In some embodiments, the needle clamping mechanism of the winding machine further includes:

[0032] The second drive mechanism is mounted on the frame and its output end is connected to the outer clamping pin, for driving the outer clamping pin to move along the first direction.

[0033] In the above technical solution, driving the outer clamping needle to move along the first direction through the second driving mechanism helps to reduce the wear of the outer clamping needle and the second driving mechanism.

[0034] Secondly, embodiments of this application provide a winding machine, including: a needle clamping mechanism of the winding machine as described in any of the above-mentioned embodiments.

[0035] In the above technical solution, the synergistic effect of the clamping needle mechanism and the coiling needle can keep the battery cell material fixed during the clamping process, reducing the loosening or deformation of the battery cell material during the clamping process.

[0036] Thirdly, embodiments of this application provide a battery processing apparatus, including: a winding machine as described above.

[0037] In the above technical solution, the battery processing equipment has strong flexibility and adaptability, and can meet the production needs of different types and specifications of batteries. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is one of the structural schematic diagrams of a winding machine provided in some embodiments of this application;

[0040] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0041] Figure 3 This is a second schematic diagram of the structure of a winding machine provided in some embodiments of this application;

[0042] Figure 4 This is a schematic diagram of the structure of the connecting member of the needle clamping mechanism provided in some embodiments of this application;

[0043] Figure 5 This is an exploded view of the connector of the needle clamping mechanism provided in some embodiments of this application.

[0044] Figure label:

[0045] Winding machine 1;

[0046] Needle clamping mechanism 10;

[0047] Rack 110;

[0048] Inner clamping needle 120, second mating structure 121;

[0049] External clamp needle 130;

[0050] Connector 140, base 141, connecting part 142, elongated hole 143, fixing hole 144, first mating structure 145, fastener 146, adjusting part 147, end 148, guide surface 149.

[0051] First drive mechanism 150, magnetic switch 151, output shaft 152;

[0052] Guide structure 160, guide rod assembly 161;

[0053] Second drive mechanism 170;

[0054] 20mm winding needle, 30mm battery cell;

[0055] First direction X, second direction Y. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0058] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0061] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0062] The batteries mentioned in the embodiments of this application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. Batteries may be cylindrical, flat, cuboid, or other shapes, and the embodiments of this application are not limited to these shapes either. Batteries are generally classified into three types according to their packaging method: cylindrical batteries, square batteries, and pouch batteries, and the embodiments of this application are not limited to these types either.

[0063] A battery consists of a casing, a cell, and an electrolyte. The casing houses the cell and electrolyte. The cell comprises a positive electrode, a negative electrode, and a separator. The battery primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the uncoated negative current collector protrudes beyond the coated one, serving as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0064] According to some embodiments of this application, refer to Figures 1-3 , Figure 1 This is one of the structural schematic diagrams of the winding machine 1 provided in some embodiments of this application. Figure 2 for Figure 1 A magnified view of a portion of point A in the middle. Figure 3 This is a second schematic diagram of the structure of a winding machine 1 provided in some embodiments of this application. The needle clamping mechanism 10 of the winding machine 1 includes a frame 110, an inner clamping needle 120, an outer clamping needle 130, and a connecting member 140. The inner clamping needle 120 and the outer clamping needle 130 are both mounted on the frame 110, and the outer clamping needle 130 and the inner clamping needle 120 are spaced apart along a first direction X. The connecting member 140 is movably mounted on the outer clamping needle 130 along a second direction Y and is adapted to be connected to the inner clamping needle 120.

[0065] The frame 110 is the supporting part of the clamping needle structure. The frame 110 is made of materials including but not limited to high-strength alloy steel. The surface of the frame 110 can be treated with rust prevention. The inner clamping needle 120 and the outer clamping needle 130 are both installed on the frame 110. The inner clamping needle 120 is fixedly installed on the frame 110, and the outer clamping needle 130 is movably installed on the frame 110.

[0066] For example, the inner clamping pin 120 may be fixedly mounted to the frame 110 by a threaded connection structure, and the outer clamping pin 130 may be movably mounted to the frame 110 by a slide rail.

[0067] The outer clamping pin 130 and the inner clamping pin 120 are spaced apart on the frame 110 along the first direction X, which is the thickness direction of the battery cell 30. The outer clamping pin 130 and the inner clamping pin 120 are aligned along the first direction X. The vertical distance between the outer clamping pin 130 and the inner clamping pin 120 can be adjusted by moving the outer clamping pin 130, thereby accommodating battery cells 30 of different thicknesses.

[0068] The connector 140 is movably mounted along the second direction Y at one end of the outer clamping pin 130 away from the frame 110, and is suitable for connecting with one end of the inner clamping pin 120 away from the frame 110. The second direction Y is the length direction of the outer clamping pin 130 and the inner clamping pin 120.

[0069] For example, the connector 140 may be provided with a connecting hole, and the end of the inner clamping pin 120 away from the frame 110 is provided with a boss corresponding to the connecting hole. The boss of the inner clamping pin 120 can pass through the connecting hole, so that the connector 140 is sleeved on the end of the inner clamping pin 120 away from the frame 110, thereby realizing the connection between the inner clamping pin 120 and the outer clamping pin 130.

[0070] Specifically, the connector 140 can extend and retract along the second direction Y relative to the end of the outer clamping pin 130 away from the frame 110, thereby realizing the connection and separation between the outer clamping pin 130 and the inner clamping pin 120. When the connector 140 abuts against the end of the outer clamping pin 130 away from the frame 110, and the outer clamping pin 130 clamps the battery cell 30, the connector 140 is sleeved on the end of the inner clamping pin 120 away from the frame 110. At this time, the inner clamping pin 120 and the outer clamping pin 130 are connected through the connector 140. When the connector 140 and the end of the outer clamping pin 130 away from the frame 110 are separated, the connector 140 does not contact the end of the inner clamping pin 120 away from the frame 110. At this time, the inner clamping pin 120 is not connected to the outer clamping pin 130.

[0071] In actual operation, after the battery cell 30 is wound on the winding needle 20, one end of the inner clamping needle 120 extends into the battery cell 30 until the inner clamping needle 120 passes through the battery cell 30. The outer clamping needle 130 moves closer to the inner clamping needle 120 until the outer clamping needle 130 abuts against the battery cell 30. At this time, the inner clamping needle 120 and the outer clamping needle 130 together clamp the battery cell 30. The vertical distance between the inner clamping needle 120 and the outer clamping needle 130 along the first direction X is the thickness of the battery cell 30. The connecting piece 140 is connected to the end of the inner clamping needle 120 away from the frame 110. That is, the suspended end of the inner clamping needle 120 is connected to the outer clamping needle 130 as a whole through the connecting piece 140, thereby increasing the rigidity of the inner clamping needle 120.

[0072] The inner clamping pin 120 and the outer clamping pin 130 are connected by the connector 140 during the clamping process. After the battery cell 30 is clamped to the pre-pressing station, the inner clamping pin 120 and the outer clamping pin 130 are separated and moved away from the battery cell 30, thereby realizing the unloading of the battery cell 30.

[0073] It should be noted that both the inner clamping pin 120 and the outer clamping pin 130 are cantilevered, with their fixed ends mounted on the frame 110 and their free ends connected by the connector 140.

[0074] In the above description, the inner clamping pin 120 and the outer clamping pin 130 are connected to the ends of the frame 110 by the connector 140, which can reduce the risk of deformation of the inner clamping pin 120 during the clamping of the battery cell 30. At the same time, the connector 140 can quickly adjust the spacing between the inner clamping pin 120 and the outer clamping pin 130 according to different battery cell 30 specifications, thereby improving production efficiency and reducing downtime.

[0075] In the battery production process, after the battery cells are wound, they are unloaded and then pre-pressed. In related technologies, battery cell winding machines typically use cantilevered inner clamping pins. These pins extend into the battery cell to clamp and unload it. However, the cantilevered inner clamping pins are relatively long, making them prone to temporary deformation when tension is applied to the battery cell. Frequent temporary deformation can easily lead to metal fatigue and permanent deformation, indicating room for improvement.

[0076] This application selectively connects the inner clamping pin 120 and the outer clamping pin 130 via the connector 140. After the battery cell 30 is wound, the inner clamping pin 120 extends into the battery cell 30 and clamps the battery cell 30 together with the outer clamping pin 130. The inner clamping pin 120 and the outer clamping pin 130 are connected through the connector 140 during the clamping process. After the battery cell 30 is clamped to the pre-pressing station, the inner clamping pin 120 and the outer clamping pin 130 separate and move away from the battery cell 30, thereby realizing the unloading of the battery cell 30.

[0077] According to the clamping needle mechanism 10 of the winding machine 1 provided in this application, by providing a connector 140 that is movably installed on the outer clamping needle 130 along the second direction Y, one end of the inner clamping needle 120 that is suspended can be connected to the outer clamping needle 130 as a whole through the connector 140, thereby increasing the rigidity of the inner clamping needle 120, improving the stability of the inner clamping needle 120, reducing the risk of deformation of the inner clamping needle 120 during the clamping process of the battery cell 30, and improving the production quality of the battery cell 30.

[0078] According to some embodiments of this application, refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of the connector 140 of the needle clamping mechanism 10 provided in some embodiments of this application. Figure 5 This is an exploded view of the connector 140 of the needle clamping mechanism 10 provided in some embodiments of this application. The connector 140 includes a base 141 and a connecting portion 142, wherein the base 141 is movably mounted to the outer needle clamp 130 along the second direction Y, and the connecting portion 142 is mounted to the base 141 and is adapted to be connected to the inner needle clamp 120.

[0079] The connector 140 is movably mounted along the second direction Y at one end of the outer clamping pin 130 away from the frame 110, and is adapted to connect with one end of the inner clamping pin 120 away from the frame 110. Specifically, the connector 140 may include a base 141 and a connecting part 142, wherein the base 141 is movably mounted along the second direction Y on the outer clamping pin 130, and a guide structure 160 is provided on the side of the base 141 facing the outer clamping pin 130 to maintain the stability of the base 141 during movement.

[0080] The connecting part 142 is installed on the side of the base 141 away from the outer clamping needle 130 and is adapted to be connected to the inner clamping needle 120. Specifically, the end of the connecting part 142 near the inner clamping needle 120 and the end of the inner clamping needle 120 away from the frame 110 are respectively provided with corresponding mating mechanisms. The connecting part 142 and the inner clamping needle 120 are connected through their mating mechanisms.

[0081] Specifically, the connecting part 142 can be movably engaged with the inner clamping pin 120 in the second direction Y, thereby realizing the connection and separation between the outer clamping pin 130 and the inner clamping pin 120. When the connecting part 142 is connected to the inner clamping pin 120, the outer clamping pin 130 and the inner clamping pin 120 jointly clamp the battery cell 30. When the connecting part 142 is separated from the inner clamping pin 120, the outer clamping pin 130 and the inner clamping pin 120 release the battery cell 30.

[0082] In the above description, the base 141 is movably mounted on the outer clamping needle 130 along the second direction Y, and the connecting part 142 is mounted on the base 141, which can realize the connection and separation between the outer clamping needle 130 and the inner clamping needle 120.

[0083] According to some embodiments of this application, refer to Figure 2 The connecting part 142 is adjustablely mounted on the base 141 along the first direction X.

[0084] The base 141 is movably mounted on the outer clamping pin 130 along the second direction Y, and the connecting part 142 is adjustablely mounted on the base 141 along the first direction X. Specifically, during actual operation, the base 141 moves between a first position and a second position along the second direction Y, and the base 141 and the connecting part 142 remain relatively stationary during the movement along the second direction Y. In the first position, the base 141 contacts the end of the outer clamping pin 130 away from the frame 110. In the second position, the base 141 is spaced apart from the end of the outer clamping pin 130 away from the frame 110 along the second direction Y. When the base 141 is in the second position, the vertical distance between the connecting part 142 and the frame 110 along the second direction Y is greater than the vertical distance between the end of the inner clamping pin 120 away from the frame 110 and the frame 110.

[0085] The connecting part 142 moves relative to the base 141 along the first direction X between a third position and a fourth position. When the connecting part 142 is in the third position, the distance between the inner clamping pin 120 and the outer clamping pin 130 after connection is the smallest, that is, the thickness of the battery cell 30 that can be clamped by the inner clamping pin 120 and the outer clamping pin 130 is the smallest. When the connecting part 142 is in the fourth position, the distance between the inner clamping pin 120 and the outer clamping pin 130 after connection is the smallest, that is, the thickness of the battery cell 30 that can be clamped by the inner clamping pin 120 and the outer clamping pin 130 is the largest. The movement of the connecting part 142 along the first direction X between the third position and the fourth position can adjust the distance between the inner clamping pin 120 and the outer clamping pin 130, thereby adapting to battery cells 30 of different thicknesses.

[0086] In the above description, the connecting part 142 is adjustablely mounted on the base 141 along the first direction X, and the distance between the inner clamping pin 120 and the outer clamping pin 130 can be adjusted to adapt to the battery cell 30 of different thicknesses.

[0087] According to some embodiments of this application, refer to Figure 5 At least one of the connecting part 142 and the seat body 141 is provided with an elongated hole 143 extending along the first direction X. The connecting part 142 and the seat body 141 are connected by a fastener 146 passing through the elongated hole 143. The seat body 141 is provided with an adjusting member 147, which is movably installed on the seat body 141 along the first direction X and abuts against the connecting part 142.

[0088] Specifically, one of the connecting part 142 and the base 141 is provided with an elongated hole 143 extending along the first direction X, and the other of the connecting part 142 and the base 141 is provided with a plurality of fixing holes 144 spaced apart along the first direction X, and the fixing holes 144 communicate with the elongated hole 143 along the second direction Y, and the diameter of the fixing holes 144 is smaller than the width of the elongated hole 143.

[0089] For example, there may be one elongated hole 143 or there may be multiple elongated holes 143.

[0090] The connecting part 142 and the seat 141 can be connected by a fastener 146 that passes through the elongated hole 143. The fastener 146 can pass through the elongated hole 143 and extend into the fixing hole 144, thereby connecting and fixing the connecting part 142 and the seat 141. The fixing hole 144 is mainly used to fix the fastener 146.

[0091] In addition, the seat 141 is provided with an adjusting member 147. The adjusting member 147 is movably installed on the seat 141 along the first direction X and abuts against the connecting part 142. The adjusting member 147 can adjust the relative position of the seat 141 and the connecting part 142 along the first direction X, thereby controlling the gap between the seat 141 and the connecting part 142 along the first direction X.

[0092] For example, the shape of the seat 141 includes, but is not limited to, an L-shape. For instance, the seat 141 may include two mutually perpendicular segments, wherein the longer segment extends along the first direction X and is directly opposite the connecting portion 142 along the second direction Y, and the shorter segment extends along the second direction Y and is directly opposite the connecting portion 142 along the first direction X. At the same time, the shorter segment is located on the side of the longer segment away from the outer clamping pin 130.

[0093] For example, the adjusting member 147 includes, but is not limited to, bolts. For instance, the adjusting member 147 may pass through a portion of the seat 141 that is directly opposite the connecting portion 142 along the first direction X, and the end 148 of the adjusting member 147 abuts against the connecting portion 142.

[0094] It should be noted that when the relative position of the seat 141 and the connecting part 142 along the first direction X is adjusted by the adjusting member 147, the connecting part 142 can move between the third position and the fourth position along the first direction X. In the third position, the edge of the elongated hole 143 furthest from the inner clamping pin 120 along the first direction X contacts the fastener 146. At this position, the distance between the inner clamping pin 120 and the outer clamping pin 130 after connection is the largest. In the fourth position, the edge of the elongated hole 143 closest to the inner clamping pin 120 along the first direction X contacts the fastener 146. At this position, the distance between the inner clamping pin 120 and the outer clamping pin 130 after connection is the smallest.

[0095] It is understandable that by cooperating with the adjusting member 147, the elongated hole 143 and the fastener 146, the relative position of the seat body 141 and the connecting part 142 along the first direction X can be adjusted, thereby realizing the control of the distance between the inner clamping pin 120 and the outer clamping pin 130 after connection.

[0096] In the above description, the connecting part 142 and the seat 141 have various structural forms, including but not limited to:

[0097] Example 1: The connecting part 142 is provided with an elongated hole 143 extending along the first direction X, and the base 141 is provided with a plurality of fixing holes 144 spaced apart along the first direction X.

[0098] like Figure 5 As shown, in this embodiment, the connecting part 142 and the seat 141 are connected by a fastener 146. The fastener 146 can pass through the connecting part 142 through the elongated hole 143 and extend into the seat 141 through the fixing hole 144. During operation, the fastener 146 and the seat 141 are fixed together. When the relative position of the seat 141 and the connecting part 142 along the first direction X is adjusted by the adjusting member 147, the fastener 146 and the seat 141 remain stationary, and the adjusting member 147 pushes the connecting part 142 to move along the first direction X.

[0099] Example 2: The base 141 is provided with an elongated hole 143 extending along the first direction X, and the connecting part 142 is provided with a plurality of fixing holes 144 spaced apart along the first direction X.

[0100] In this embodiment, the connecting part 142 and the seat 141 are connected by a fastener 146. The fastener 146 can pass through the seat 141 through the elongated hole 143 and extend into the connecting part 142 through the fixing hole 144. During operation, the fastener 146 and the connecting part 142 are fixed together. When the relative position of the seat 141 and the connecting part 142 along the first direction X is adjusted by the adjusting member 147, the seat 141 remains stationary, the adjusting member 147 pushes the connecting part 142 to move along the first direction X, and the fastener 146 moves together with the connecting part 142.

[0101] According to some embodiments of this application, please refer to Figure 4 and Figure 5 As shown,

[0102] The connector 140 has a first mating structure 145, and the inner clamping needle 120 has a second mating structure 121. During the movement of the connector 140 along the second direction Y, it is suitable to drive the first mating structure 145 to connect with the second mating structure 121 so that the connector 140 and the inner clamping needle 120 are limited along the first direction X.

[0103] The fixed ends of the inner clamping needle 120 and the outer clamping needle 130 are mounted on the frame 110. The free ends of the inner clamping needle 120 and the outer clamping needle 130 can be connected by a connector 140. The connector 140 is movably mounted along the second direction Y at one end of the outer clamping needle 130 away from the frame 110, and is used to connect with the end of the inner clamping needle 120 away from the frame 110. During the movement of the connector 140 along the second direction Y, the outer clamping needle 130 also drives the connector 140 to move along the first direction X, thereby realizing the limiting cooperation between the connector 140 and the inner clamping needle 120.

[0104] Specifically, the connector 140 has a first mating structure 145, and the inner clamping needle 120 has a second mating structure 121. During the movement of the connector 140 along the second direction Y, the outer clamping needle 130 simultaneously drives the connecting part 142 to move along the first direction X, driving the first mating structure 145 on the connector 140 to connect with the second mating structure 121 on the inner clamping needle 120, so that the connector 140 and the inner clamping needle 120 are limited along the first direction X.

[0105] The connector 140 is movably mounted on the end of the outer clamping pin 130 away from the frame 110. The connector 140 can move along the second direction Y from contact with the outer clamping pin 130 to being spaced apart from the outer clamping pin 130. Then, the outer clamping pin 130 drives the connector 140 to move along the first direction X. When the outer clamping pin 130 stops moving, the first mating structure 145 of the connector 140 and the second mating structure 121 of the inner clamping pin 120 are aligned along the second direction Y. At the same time, the first mating structure 145 and the second mating structure 121 are spaced apart along the first direction X. The connector 140 then moves along the second direction Y until the first mating structure 145 and the second mating structure 121 are connected.

[0106] For example, the first mating structure 145 includes, but is not limited to, a connecting hole, and the second mating structure 121 includes, but is not limited to, a boss. The connector 140 where the first mating structure 145 is located is located at the end of the outer clamping pin 130 away from the frame 110, and the second mating structure 121 is located at the end of the inner clamping pin 120 away from the frame 110. The boss can penetrate through the connecting hole, so that the connector 140 is sleeved on the end of the inner clamping pin 120 away from the frame 110, thereby realizing the connection between the inner clamping pin 120 and the outer clamping pin 130.

[0107] In the above description, the connection of the first mating structure 145 and the second mating structure 121 can limit the connection 140 and the inner clamping pin 120 along the first direction X.

[0108] According to some embodiments of this application, refer to Figure 4 The cross-sectional area of ​​the end 148 of the connector 140 facing the inner clamping pin 120 is smaller than the cross-sectional area of ​​the main body of the connector 140, and the end 148 of the connector 140 facing the inner clamping pin 120 is provided with a guide surface 149.

[0109] The connector 140 can be divided into a main body and an end 148. The main body contacts the end of the outer clamping pin 130 that is away from the frame 110. When the adjustment length of the adjusting member 147 is at its minimum, the projection of the end 148 along the second direction Y is located on the main body. When the adjustment length of the adjusting member 147 is at its maximum, the end 148 along the second direction Y is closer to the inner clamping pin 120 relative to the main body of the connector 140.

[0110] Specifically, the cross-sectional area of ​​the end 148 of the connector 140 facing the inner clamping needle 120 is smaller than the cross-sectional area of ​​the main body of the connector 140. That is, the end 148 of the connector 140 near the inner clamping needle 120 is narrower than the main body, thereby optimizing the fit between the connector 140 and the inner clamping needle 120 and reducing interference when the connector 140 and the inner clamping needle 120 work together after the fit.

[0111] In addition, the end 148 of the connector 140 facing the inner clamping needle 120 is provided with a guide surface 149, and the end 148 of the connector 140 is provided with a first mating structure 145 for connecting with the second mating structure 121 of the inner clamping needle 120. The guide surface 149 can reduce the deviation generated between the connector 140 and the inner clamping needle 120 during the mating process, which helps the inner clamping needle 120 to remain stable during operation.

[0112] Meanwhile, after the connector 140 and the inner clamping pin 120 are engaged, the guide surface 149 can effectively guide the movement trajectory of the inner clamping pin 120, thereby improving the stability of clamping.

[0113] In the above description, the cross-sectional area of ​​the end 148 of the connector 140 facing the inner clamping needle 120 is smaller than the cross-sectional area of ​​the main body of the connector 140, which can reduce the interference when the connector 140 and the inner clamping needle 120 work together after mating. At the same time, the end 148 of the connector 140 facing the inner clamping needle 120 is provided with a guide surface 149, which can effectively guide the movement trajectory of the inner clamping needle 120 and help the inner clamping needle 120 maintain stability during operation.

[0114] According to some embodiments of this application, see Figure 3 As shown, the needle clamping mechanism 10 of the winding machine 1 also includes a first drive mechanism 150. The first drive mechanism 150 is mounted on the outer needle clamping 130, and the output end of the first drive mechanism 150 is connected to the connector 140 for driving the connector 140 to move along the second direction Y.

[0115] The first drive mechanism 150 mainly provides mechanical motion through an external power source, thereby driving the connector 140 to move along the second direction Y. Specifically, the dimensions of both ends of the outer clamping pin 130 along the first direction X are larger than the middle part of the outer clamping pin 130. The first drive mechanism 150 can be installed in the middle part of the outer clamping pin 130, and the first drive mechanism 150 passes through the end of the outer clamping pin 130 away from the frame 110 along the second direction Y. The output end of the first drive mechanism 150 is connected to the side of the connector 140 facing the outer clamping pin 130, and is used to drive the connector 140 to move along the second direction Y.

[0116] Meanwhile, a guide structure 160 is installed on the side of the connector 140 facing the outer clamping pin 130, and the guide structure 160 extends into the end of the outer clamping pin 130 away from the frame 110, in order to maintain the stability of the connector 140 during movement.

[0117] In addition, the first drive mechanism 150 has a magnetic switch 151, which is electrically connected to the host computer and is used to send a signal to the host computer when the first drive mechanism 150 has not moved to the target position, so as to indicate that the connector 140 is not connected to the inner clamping pin 120.

[0118] The magnetic switch 151 is a common sensor that can detect the position or state of certain components by sensing changes in magnetic fields.

[0119] Specifically, the output end of the first drive mechanism 150 is connected to the side of the connector 140 facing the outer clamping pin 130, which can drive the connector 140 to move along the second direction Y. During the engagement of the connector 140 and the inner clamping pin 120, the first drive mechanism 150 first drives the connector 140 to move away from the first drive mechanism 150. When the connector 140 is successfully connected to the inner clamping pin 120, the first drive mechanism 150 can drive the connector 140 to move closer to the first drive mechanism 150 until the first drive mechanism 150 is reset. When the connector 140 is not connected to the inner clamping pin 120, the first drive mechanism 150 cannot be reset.

[0120] The magnetic switch 151 is electrically connected to the host computer to form a feedback system for real-time monitoring of the position of the first drive mechanism 150. When the first drive mechanism 150 fails to reset, i.e., the first drive mechanism 150 has not moved to the target position, the magnetic switch 151 will trigger a signal and send the signal to the host computer to indicate that the connector 140 is not connected to the inner clamping pin 120, so that the host computer can respond in time to reduce abnormalities or malfunctions in the operation of the equipment.

[0121] For example, the first drive mechanism 150 includes, but is not limited to, a cylinder.

[0122] For example, the host computer includes, but is not limited to, a computer or control device used to monitor and control the entire system.

[0123] In the above description, the position of the first drive mechanism 150 is detected by the magnetic switch 151 connected to the host computer, and the connection status between the connector 140 and the inner clamping needle 120 can be monitored in real time, thereby reducing equipment failures and damages caused by improper connection and improving the accuracy and reliability of the entire system.

[0124] According to some embodiments of this application, such as Figure 2 As shown, a guide structure 160 along the second direction Y is provided between the connector 140 and the outer clamping pin 130.

[0125] Specifically, the first drive mechanism 150 is mounted on the outer clamping pin 130, and the output end of the first drive mechanism 150 is connected to the side of the connector 140 facing the outer clamping pin 130, for driving the connector 140 to move along the second direction Y. At the same time, a guide structure 160 is mounted on the side of the connector 140 facing the outer clamping pin 130. The guide structure 160 extends along the second direction Y and extends into the end of the outer clamping pin 130 away from the frame 110, for maintaining the stability of the connector 140 during movement.

[0126] The guide structure 160 mainly serves as a constraint, causing the connector 140 to move along a specific path in the second direction Y, thereby reducing the risk of the connector 140 deviating from or moving irregularly.

[0127] When the first drive mechanism 150 drives the connector 140 to move along the second direction Y, the guide structure 160 moves along the second direction Y together with the connector 140, and at least a portion of the guide structure 160 extends into the end of the outer clamping pin 130 away from the frame 110.

[0128] In the above description, a guide structure 160 along the second direction Y is provided between the connector 140 and the outer clamping pin 130, which can restrict the degree of freedom of the connector 140 and reduce the shaking or displacement of the connector 140 during movement.

[0129] According to some embodiments of this application, such as Figure 2 As shown, the output end of the first drive mechanism 150 includes an output shaft 152, which passes through the outer clamping pin 130 along the second direction Y and is connected to the connector 140. The guide structure 160 includes a guide rod assembly 161 extending along the second direction Y. Of the two parts of the guide rod assembly 161 that extend and retract relative to each other along the second direction Y, one part is installed on the outer clamping pin 130 and the other part is connected to the connector 140.

[0130] The first drive mechanism 150 is mounted on the outer clamping pin 130, and the output end of the first drive mechanism 150 is connected to the side of the connector 140 facing the outer clamping pin 130, for driving the connector 140 to move along the second direction Y.

[0131] Specifically, the output end of the first drive mechanism 150 includes an output shaft 152. The output shaft 152 passes through one end of the outer clamping pin 130 away from the frame 110 along the second direction Y and is connected to the side of the connector 140 facing the outer clamping pin 130. The first drive mechanism 150 drives the output shaft 152 to move along the second direction Y, thereby driving the connector 140 to move along the second direction Y.

[0132] Meanwhile, a guide structure 160 is provided between the connector 140 and the outer clamping pin 130. The guide structure 160 includes a guide rod assembly 161 extending along the second direction Y. The guide rod assembly 161 includes two parts that extend and retract relative to each other along the second direction Y. One part is installed on the outer clamping pin 130, and the other part is connected to the side of the connector 140 facing the outer clamping pin 130. When the first drive mechanism 150 drives the output shaft 152 to move along the second direction Y, the guide rod assembly 161 extends and retracts accordingly.

[0133] In the above description, the output shaft 152 cooperates with the guide rod assembly 161 to drive the connecting member 140 to move along the second direction Y.

[0134] According to some embodiments of this application, such as Figure 3 As shown, the needle clamping mechanism 10 of the winding machine 1 may also include a second drive mechanism 170. The second drive mechanism 170 is mounted on the frame 110, and the output end of the second drive mechanism 170 is connected to the outer clamping needle 130 for driving the outer clamping needle 130 to move along the first direction X.

[0135] The second drive mechanism 170 mainly provides mechanical motion through an external power source, thereby driving the outer clamping needle 130 to move along the first direction X. Specifically, the second drive mechanism 170 is mounted on the frame 110, and the output end of the second drive mechanism 170 is connected to the outer clamping needle 130. The second drive mechanism 170 can reduce friction and excessive load in the mechanical system, and effectively reduce the wear of the outer clamping needle 130 and its drive system.

[0136] In actual operation, when the second drive mechanism 170 drives the outer clamping pin 130 to approach the inner clamping pin 120 along the first direction X, the outer clamping pin 130 and the inner clamping pin 120 jointly clamp the battery cell 30. When the second drive mechanism 170 drives the outer clamping pin 130 to move away from the inner clamping pin 120 along the first direction X, the outer clamping pin 130 and the inner clamping pin 120 no longer clamp the battery cell 30.

[0137] For example, the second drive mechanism 170 includes, but is not limited to, a slide rail.

[0138] In the above description, driving the outer clamping needle 130 to move along the first direction X by the second drive mechanism 170 helps to reduce the wear of the outer clamping needle 130 and the second drive mechanism 170.

[0139] According to some embodiments of this application, such as Figure 1 and Figure 3 As shown, this application also provides a winding machine 1, which includes the needle clamping mechanism 10 of any of the above embodiments of the winding machine 1.

[0140] The winding machine 1 is a device for winding the battery cell 30 material according to a certain process. The winding machine 1 may include a clamping needle mechanism 10 and a winding needle 20, wherein the winding needle 20 is used to wind the battery cell 30. The winding needle 20 makes the battery cell 30 material wind along a set path by contacting the battery cell 30 material. The clamping needle mechanism 10 is used to transfer the wound battery cell 30 from the winding needle 20 to the pre-pressing station.

[0141] Specifically, the needle clamping mechanism 10 may include a frame 110, an inner clamping needle 120, an outer clamping needle 130, and a connector 140. The inner clamping needle 120 and the outer clamping needle 130 are both mounted on the frame 110, and the outer clamping needle 130 and the inner clamping needle 120 are spaced apart along the first direction X. The connector 140 is movably mounted on the outer clamping needle 130 along the second direction Y and is adapted to be connected to the inner clamping needle 120.

[0142] It should be noted that the specifications of the wound battery cell 30 can be controlled by adjusting the diameter of the winding needle 20.

[0143] In addition, the winding needle 20 is provided with a groove corresponding to the inner clamping needle 120, and the inner clamping needle 120 can extend into the groove to clamp the battery cell 30 between the inner clamping needle 120 and the outer clamping needle 130.

[0144] In the above description, the synergistic effect of the clamping needle mechanism 10 and the coiling needle 20 can keep the battery cell 30 material fixed during the clamping process, reducing the loosening or deformation of the battery cell 30 material during the clamping process.

[0145] According to some embodiments of this application, this application also provides a battery processing apparatus, including a winding machine 1 of any of the above schemes.

[0146] Battery processing equipment is mainly used in the manufacturing and processing of batteries, such as battery assembly, debugging and testing.

[0147] The winding machine 1 is a common piece of equipment in the battery production process. It is usually used to wind the positive and negative electrode sheets and the separator in a specific way to form the battery cell 30.

[0148] As described above, the battery processing equipment has strong flexibility and adaptability, and can meet the production needs of different types and specifications of batteries.

[0149] According to some embodiments of this application, see Figures 1-5As shown, this application provides a needle clamping mechanism 10 for a winding machine 1. The needle clamping mechanism 10 of the winding machine 1 includes a frame 110, an inner needle clamping 120, an outer needle clamping 130, and a connector 140. The inner needle clamping 120 and the outer needle clamping 130 are both mounted on the frame 110, and the outer needle clamping 130 and the inner needle clamping 120 are spaced apart along a first direction X. The connector 140 is movably mounted on the outer needle clamping 130 along a second direction Y, and is adapted to connect with the inner needle clamping 120. The connector 140 may include a base 141 and a connecting portion 142. The base 141 is movably mounted on the outer needle clamping 130 along the second direction Y, and the connecting portion 142 is mounted on the base 141 and adapted to connect with the inner needle clamping 120. The connecting portion 142 is adjustablely mounted on the base 141 along the first direction X. At least one of the connecting part 142 and the seat body 141 is provided with an elongated hole 143 extending along the first direction X. The connecting part 142 and the seat body 141 are connected by a fastener 146 passing through the elongated hole 143. The seat body 141 is provided with an adjusting member 147, which is movably installed on the seat body 141 along the first direction X and abuts against the connecting part 142.

[0150] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0151] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A needle clamping mechanism for a winding machine, characterized in that, include: frame; An internal clamping pin is mounted on the frame; The outer clamping pin is mounted on the frame and is spaced apart from the inner clamping pin along a first direction; A connector is movably mounted on the outer clamping pin along the second direction and is adapted to connect with the inner clamping pin.

2. The needle clamping mechanism of the winding machine according to claim 1, characterized in that, The connector includes: The base body is movably mounted on the outer clamping pin along the second direction; A connecting part is installed on the base and is adapted to be connected to the inner clamping pin.

3. The needle clamping mechanism of the winding machine according to claim 2, characterized in that, The connecting part is adjustablely mounted on the base along the first direction.

4. The needle clamping mechanism of the winding machine according to claim 3, characterized in that, At least one of the connecting part and the seat body is provided with an elongated hole extending along the first direction, and the connecting part and the seat body are connected by a fastener passing through the elongated hole; The seat is provided with an adjusting member, which is movably installed on the seat along the first direction and abuts against the connecting part.

5. The needle clamping mechanism of the winding machine according to any one of claims 1-4, characterized in that, The connector has a first mating structure, and the inner clamping pin has a second mating structure. During the movement of the connector along the second direction, it is adapted to drive the first mating structure to connect with the second mating structure so that the connector and the inner clamping pin are limited along the first direction.

6. The needle clamping mechanism of the winding machine according to claim 5, characterized in that, The cross-sectional area of ​​the end of the connector facing the inner clamping needle is smaller than the cross-sectional area of ​​the main body of the connector, and the end of the connector facing the inner clamping needle is provided with a guide surface.

7. The needle clamping mechanism of the winding machine according to any one of claims 1-6, characterized in that, Also includes: A first driving mechanism is mounted on the outer clamping pin, and its output end is connected to the connector, for driving the connector to move along the second direction.

8. The needle clamping mechanism of the winding machine according to claim 7, characterized in that, A guide structure along the second direction is provided between the connector and the outer clamping pin.

9. The needle clamping mechanism of the winding machine according to claim 8, characterized in that, The output end of the first drive mechanism includes an output shaft, which passes through the outer clamping pin along the second direction and is connected to the connector. The guide structure includes a guide rod assembly extending along the second direction. Of the two parts of the guide rod assembly that extend and retract relative to each other along the second direction, one part is installed on the outer clamping pin, and the other part is connected to the connector.

10. The needle clamping mechanism of the winding machine according to any one of claims 1-9, characterized in that, Also includes: The second drive mechanism is mounted on the frame and its output end is connected to the outer clamping pin, for driving the outer clamping pin to move along the first direction.

11. A winding machine, characterized in that, include: The needle clamping mechanism of the winding machine as described in any one of claims 1-10.

12. A battery processing equipment, characterized in that, include: The winding machine as described in claim 11.

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