Winding cell processing equipment

Abstract

The utility model relates to the field of winding electric core's processing, disclose a kind of winding electric core processing equipment, including bearing table, storage device, clamping device and drive arrangement. Among them, bearing table is used to support winding electric core. Winding electric core has positioning hole, and positioning hole extends along first direction. Storage device is used to store support member. Clamping device is used to clamp support member. Drive arrangement and clamping device drive connection are used to: drive clamping device from storage device clamp support member;Drive clamping device moves along first direction, and make support member insert into positioning hole. Support member is hollow columnar structure in positioning hole, and at least part surface of support member is close to the side wall of positioning hole. After the above-mentioned support member is inserted into the positioning hole of winding electric core, at least part surface of support member can generate pressure effect with the side wall of positioning hole, so that diaphragm does not scatter randomly, thereby playing the role of supporting positioning hole.

Description

Technical Field

[0001] This utility model relates to the field of battery cell processing technology, and in particular to a battery cell processing equipment. Background Technology

[0002] Winded battery cells are typically designed with positioning holes, which serve the following purposes: during the welding of the positive electrode cap to the battery cell housing, the ejector pin can pass through the pre-drilled hole at the bottom of the housing and be inserted into the positioning hole of the wound battery cell to perform a positioning function; during the electrolyte injection process, the injection needle can be inserted into the positioning hole to inject the electrolyte into the core area of ​​the battery cell, thereby allowing the electrolyte to wet the entire battery cell more quickly and evenly; during the formation process, the positioning hole can serve as an venting channel.

[0003] However, due to insufficient compressive strength of the diaphragm or improper winding tension design, the diaphragm may unravel and block the positioning holes, thereby affecting the function of the positioning holes in the cell processing. Utility Model Content

[0004] This invention provides a winding battery cell processing equipment to solve the problem in the prior art where the diaphragm easily spreads out, blocking the positioning holes of the winding battery cell and affecting the function of the positioning holes in the production process of the winding battery cell.

[0005] This utility model embodiment provides a winding battery cell processing equipment, including:

[0006] A support platform is used to support a component to be supported; the component to be supported has a positioning hole that extends along a first direction.

[0007] Storage device for storing support components;

[0008] Clamping device for clamping support components;

[0009] A driving device, which is driven and connected to the clamping device, is used to: drive the clamping device to clamp the support member from the storage device; drive the clamping device to move along the first direction so that the support member is inserted into the positioning hole; the support member is a tubular structure, and at least a portion of the surface of the support member abuts against the sidewall of the positioning hole.

[0010] The beneficial effects of this utility model embodiment are as follows:

[0011] After the support member is inserted into the positioning hole of the component to be supported, at least a portion of the support member's surface can adhere tightly to the sidewall of the positioning hole, preventing the diaphragm from spreading out and thus providing support for the positioning hole. Furthermore, the friction between the support member and the sidewall of the positioning hole keeps the support member within the positioning hole, preventing it from easily falling out. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the wound battery cell provided in this application in some embodiments;

[0013] Figure 2 for Figure 1 The top view of the wound battery cell is shown.

[0014] Figure 3 A schematic diagram of the structure of the winding battery cell processing equipment provided in this application in some embodiments;

[0015] Figure 4 A schematic diagram of the structure of the support provided in this application in some embodiments;

[0016] Figure 5 Schematic diagrams of the structure of the support provided in this application in other embodiments;

[0017] Figure 6 Schematic diagrams of the structure of the support provided in this application in other embodiments;

[0018] Figure 7 A schematic diagram showing the size relationship between the cross-section of the second end, the cross-section of the first end, and the cross-section of the positioning hole after the second end of the support member provided in this application is compressed.

[0019] Figure 8 A schematic diagram of the gripping device provided in this application in some embodiments;

[0020] Figure 9 A schematic diagram of the structure of the first and second grippers provided in this application in some embodiments;

[0021] Figure 10 Schematic diagrams of the material storage device provided in this application in some embodiments;

[0022] Figure 11 for Figure 10 The cross-sectional view of the storage bin shown;

[0023] Figure 12 The driving device provided in this application is shown in some embodiments as a structural schematic diagram.

[0024] Figure label:

[0025] 1- Equipment for processing wound battery cells; 2- Wound battery cells;

[0026] 3-Positioning hole; 4-Diaphragm;

[0027] 5-Support component; 501-First end;

[0028] 502 - Second end; 10 - Support platform;

[0029] 20 - Storage device; 21 - Storage bin;

[0030] 211 - Base plate; 212 - First side plate;

[0031] 2121 - First sub-board; 2122 - Second sub-board;

[0032] 213 - Discharge port; 22 - Rotor;

[0033] 221 - Notch; 30 - Clamping device;

[0034] 31-First gripper; 311-First gripping surface;

[0035] 32-Second gripper; 321-Second gripping surface;

[0036] 33 - Base; 40 - Drive unit;

[0037] 41 - Robotic arm; 50 - Conveyor belt;

[0038] 60 - First clamping part; 70 - Second clamping part;

[0039] A - Third end; B - Fourth end. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] A battery cell is the component in a battery where electrochemical reactions occur. It is the smallest unit in a battery capable of performing electrochemical reactions such as charging and discharging, and typically includes a positive electrode, a negative electrode, and a separator. Lithium-ion battery cells primarily function by the insertion and extraction of lithium ions between the positive and negative electrodes. In terms of shape, battery cells include cylindrical cells and cuboid cells. In a cylindrical cell, the positive electrode, negative electrode, and separator are stacked together to form a cylindrical electrode assembly. In a cuboid cell, the positive electrode, negative electrode, and separator are stacked together to form a generally cuboid electrode assembly, or the positive electrode, negative electrode, and separator are stacked along the thickness direction to form a generally cuboid electrode assembly. In this application, the battery cell formed by winding described above is referred to as a wound cell.

[0042] Figure 1 The diagram shows the structure of the wound battery cell provided in this application in some embodiments. Figure 2for Figure 1 The image shows a top view of the wound battery cell. (As shown) Figure 1 and Figure 2 As shown, the wound cell 2 has a positioning hole 3. The positioning hole 3 can be located at the center of the wound cell 2 or slightly off-center. The positioning hole 3 is formed during the winding process of the wound cell 2. In the winding process, firstly, the positive electrode sheet, negative electrode sheet, and separator are stacked in the order of negative electrode sheet-separator-positive electrode sheet-separator; then, a winding needle is used to wind the above stacked layers into a tightly packed cell. After winding is completed, the winding needle is removed from the cell, thereby forming the positioning hole 3.

[0043] After the battery cell is wound, several processes are required, such as cell insertion into the casing, welding the positive electrode cap, electrolyte injection, formation, and capacity testing. During the welding process between the positive electrode cap and the battery cell casing, a pin can pass through a pre-drilled hole at the bottom of the casing and be inserted into the positioning hole 3 of the battery cell for positioning purposes.

[0044] However, during the cell's transmission process, the diaphragm layer closest to the positioning hole 3 may loosen, thus blocking the positioning hole 3. Figure 2 In this context, the separator is designated as separator 4. After separator 4 blocks the positioning hole 3, during the welding process of the positive electrode cap and the cell casing, when the ejector pin passes through the pre-drilled hole at the bottom of the casing and inserts into the positioning hole 3 of the cell, the ejector pin will interfere with separator 4, affecting the positioning effect. Furthermore, under the pressure of the ejector pin, separator 4 and the adjacent electrode sheets may be damaged, thus affecting the battery performance.

[0045] In view of the above, this application provides a winding cell processing equipment 1 to improve the phenomenon that the diaphragm 4 spreads out and blocks the positioning hole 3 of the cell.

[0046] Figure 3 Schematic diagrams of the structure of the winding cell processing equipment provided in this application in some embodiments, such as... Figure 3 As shown, the winding battery cell processing equipment 1 includes a support platform 10, a storage device 20, a clamping device 30, and a driving device 40. Specifically, the support platform 10 is used to support the component to be supported. In this application, the component to be supported is the battery cell formed by the winding process, namely the wound battery cell 2. The positioning hole 3 of the wound battery cell 2 extends along the first direction Z, which is perpendicular to the support surface of the support platform 10. The first direction Z can also be understood as the vertical direction.

[0047] The storage device 20 stores the support member 5, which is inserted into the positioning hole 3 of the wound cell 2 to support the positioning hole 3. The clamping device 30 clamps the support member 5 and is connected to the driving device 40. The driving device 40 drives the clamping device 30 to clamp the support member 5 from the storage device 20 and also drives the clamping device 30 to move along the first direction Z so that the support member 5 is inserted into the positioning hole 3.

[0048] The support member 5 is a tubular structure, located within the positioning hole 3, and arranged around the central axis of the positioning hole 3. At least a portion of the surface of the support member 5 can fit against the sidewall of the positioning hole 3, preventing the diaphragm 4 from spreading out arbitrarily. Furthermore, there is static friction between the support member 5 and the sidewall of the positioning hole 3; under the action of this static friction, the support member 5 can remain within the positioning hole 3 and is less likely to detach from it.

[0049] When specifically setting up the support member 5, the support member 5 can have various structural forms. Figure 4 Structural diagrams of the support provided in this application in some embodiments, such as... Figure 4 As shown, the support member 5 can be a tubular structure of uniform thickness, and the maximum dimension of the cross-section of the support member 5 is smaller than the diameter of the positioning hole 3 of the winding cell 2. Optionally, the cross-section of the support member 5 can be circular, elliptical, or other shapes, which are not listed in this application. When the cross-section of the support member 5 is circular, the outer diameter of the support member 5 is smaller than the diameter of the positioning hole 3 of the winding cell 2. When the cross-section of the support member 5 is elliptical, the major axis of the cross-section is smaller than the diameter of the positioning hole 3 of the winding cell 2.

[0050] Since the maximum cross-sectional dimension of the aforementioned support member 5 is smaller than the diameter of the positioning hole 3 of the wound cell 2, the support member 5 can be inserted into the positioning hole 3 of the wound cell 2. To prevent the support member 5 from easily detaching from the positioning hole 3 after insertion, in some embodiments, the clamping device 30 can squeeze the end of the support member 5 after clamping it, flattening the end of the support member 5. Taking a circular cross-section as an example, after being squeezed, the cross-section of the squeezed end of the support member 5 changes from a circle to a shape similar to an ellipse. By controlling the squeezing force, the maximum dimension of the cross-section can be made close to the diameter of the positioning hole 3 of the wound cell 2. After being inserted into the positioning hole 3 of the wound cell 2, the flattened end of the support member 5 can abut against the side wall of the positioning hole 3, generating pressure and thus providing support for the positioning hole 3. In addition, under the squeezing action of the sidewalls of the support member 5 and the positioning hole 3, the support member 5 can be kept inside the positioning hole 3 and is not easy to fall out of the positioning hole 3.

[0051] For ease of description, a first end 501 and a second end 502 are defined for the support member 5. The first end 501 and the second end 502 are the two ends of the support member 5 along its length direction, and the first end 501 includes a support member 5 of a predetermined length, and the second end 502 also includes a support member 5 of a predetermined length. Optionally, the predetermined length can be 1cm, 2cm, 3cm, or other values.

[0052] The clamping device 30 can clamp the second end 502 of the support member 5 and squeeze the second end 502, causing the second end 502 to be flattened. After the second end 502 of the support member 5 is flattened, the maximum dimension of the cross-section of the second end 502 is greater than the maximum dimension of the cross-section of the first end 501.

[0053] Please refer to Figure 5 , Figure 5 Taking the support member 5 as a cylindrical tube as an example, the size relationship between the cross-section of the second end 502, the cross-section of the first end 501, and the cross-section of the positioning hole 3 after the second end 502 of the support member 5 is compressed is shown. Figure 5 As shown, the cross-section of the second end 502 changes from a circle to a shape similar to an ellipse, and the maximum dimension of this cross-section is approximately equal to the diameter of the positioning hole 3. The first end 501 of the support member 5 is less affected by compression, and the cross-section of the first end 501 remains approximately circular, with its outer diameter smaller than the diameter of the positioning hole 3.

[0054] During the insertion of the support member 5 into the positioning hole 3 of the wound cell 2, the first end 501 of the support member 5 enters the positioning hole 3 first. Since the outer diameter of the first end 501 is smaller than the diameter of the positioning hole 3, the first end 501 can be smoothly inserted into the positioning hole 3. As the length of the support member 5 inserted into the positioning hole 3 increases, the second end 502 of the support member 5 also gradually enters the positioning hole 3. Since the maximum cross-sectional dimension of the second end 502 is equal to or slightly larger than the diameter of the positioning hole 3, the second end 502 of the support member 5 can abut against the inner wall of the positioning hole 3 after entering the positioning hole 3, thus preventing the support member 5 from easily falling out of the positioning hole 3.

[0055] In other embodiments, the support member 5 may also be a pre-fabricated tubular structure with uneven thickness. The support member 5 includes a first end 501 and a second end 502 arranged along its length. The maximum cross-sectional dimension of the first end 501 is smaller than the diameter of the positioning hole 3, making it easier to insert the first end 501 into the positioning hole 3. The maximum cross-sectional dimension of the second end 502 is equal to or slightly larger than the diameter of the positioning hole 3, allowing the second end 502 to abut against the inner wall of the positioning hole 3 after insertion. During the insertion of the support member 5 into the positioning hole 3, after the gripping device 30 grasps the support member 5, there is no need to perform operations such as squeezing or deforming the support member 5; the support member 5 can be directly inserted into the positioning hole 3 under the drive of the driving device 40.

[0056] In other embodiments, the support 5 may also include a flexible sheet that curls its opposite sides toward the center, thereby forming a shape such that... Figure 6 The diagram shows a tubular structure with a notch. Alternatively, the opposite sides of the sheet can overlap to form a shape like... Figure 7 The tubular structure shown.

[0057] The thickness of the aforementioned support member 5 is adjustable. In some specific embodiments, during the process of inserting the support member 5 into the positioning hole 3 of the wound cell 2, the support member 5 can be tightened to make it thinner, thereby allowing the support member 5 to be smoothly inserted into the positioning hole 3. After the support member 5 is inserted into place, the support member 5 is loosened, causing it to expand, thereby causing the support member 5 to abut against the inner wall of the positioning hole 3 and be locked in place within the positioning hole 3.

[0058] In some embodiments, the sidewall of the support member 5 has a perforated structure. The shape of the perforated structure is not limited; for example, it can be circular, elliptical, or irregularly shaped. During the electrolyte injection process, the electrolyte can diffuse through the perforated structure into the peripheral area of ​​the wound cell. During the formation process, gas can pass through the perforated structure and collect inside the support member 5, which can serve as a gas venting channel.

[0059] Figure 8 Schematic diagrams of the gripping device provided in this application in some embodiments, such as Figure 8 As shown, the gripping device 30 includes a first gripper 31 and a second gripper 32. The first gripper 31 and the second gripper 32 can move closer together under the drive of the drive device 40 to grip the support member 5. Furthermore, the first gripper 31 and the second gripper 32 can also move further apart under the drive of the drive device 40 to release the support member 5.

[0060] It is worth noting that during the process of inserting the support member 5 into the positioning hole 3 of the winding cell 2, the clamping device 30 can release the support member 5 before the second end 502 of the support member 5 enters the positioning hole 3. Since the maximum dimension of the cross-section of the second end 502 is close to the diameter of the positioning hole 3, the second end 502 will be stuck outside the positioning hole 3. At this time, the clamping device 30 can be moved above the support member 5 by the driving device 40, so that the first jaw 31 or the second jaw 32 is aligned with the support member 5. Then, the clamping device 30 is driven to move down, so that the first jaw 31 or the second jaw 32 abuts against the second end 502 of the support member 5, and presses the second end 502 into the positioning hole 3.

[0061] Please continue to refer to this. Figure 8In some embodiments, the gripping device 30 further includes a base 33, with a first gripper 31 and a second gripper 32 arranged along a second direction X, and the first gripper 31 and the second gripper 32 slidably connected to the base 33 along the second direction X, respectively. By driving at least one of the first gripper 31 and the second gripper 32 to slide along the second direction X, the distance between the first gripper 31 and the second gripper 32 can be adjusted, thereby achieving the purpose of releasing the support member 5, gripping the support member 5, or squeezing the support member 5 to deform it. Of course, if one of the first gripper 31 and the second gripper 32 is fixed to the base 33, and the other is slidably connected to the base 33 along the second direction X, the purpose of releasing the support member 5, gripping the support member 5, or squeezing the support member 5 to deform it can also be achieved, which will not be described in detail here.

[0062] In other embodiments, the first gripper 31 and the second gripper 32 can be rotatably connected to the base 33 via a pivot. Driven by the drive device 40, the first gripper 31 and the second gripper 32 can rotate relative to the base 33, thereby achieving the purpose of releasing the support member 5, clamping the support member 5, or squeezing the support member 5 to deform it. Of course, the above purpose can also be achieved by having one of the first gripper 31 and the second gripper 32 rotatably connected to the base 33 via a pivot, while the other is fixed to the base 33; this application will not describe this in detail.

[0063] Figure 9 Schematic diagrams of the structure of the first and second grippers provided in this application in some embodiments, such as... Figure 9 As shown, the first gripper 31 has a first gripping surface 311 for gripping the support member 5. The first gripping surface 311 extends along the first direction Z, and the first gripping surface 311 is an arc surface that protrudes in a direction away from the support member 5. This arc surface can be a circular arc surface, an elliptical arc surface, or other arc surface structures.

[0064] When specifically configuring the second gripper 32, the second gripper 32 and the first gripper 31 have similar structures. Specifically, the second gripper 32 has a second gripping surface 321 for gripping the support member 5. The second gripping surface 321 extends along the first direction Z, and the second gripping surface 321 is an arc surface that protrudes in a direction away from the support member 5.

[0065] By making both the first clamping surface 311 and the second clamping surface 321 curved surfaces, the end of the support member 5 can also form a corresponding curved surface after being compressed, thereby giving the compressed end of the support member 5 a relatively smooth contour, making it easier to insert into the positioning hole 3 of the winding cell 2, and also less likely to scratch the inner wall of the positioning hole 3. Of course, in other embodiments, the first clamping surface 311 and the second clamping surface 321 can also be planar structures.

[0066] When specifically setting the curvature of the first clamping surface 311 and the curvature of the second clamping surface 321, the curvature of the first clamping surface 311 and the curvature of the second clamping surface 321 can be smaller than the curvature of the support member 5. After the support member 5 is pressed by the first clamping surface 311 and the second clamping surface 321, a portion of the surface of the compressed end of the support member 5 can fit with the first clamping surface 311, and another portion of the surface can fit with the second clamping surface 321. That is to say, a portion of the surface of the compressed end of the support member 5 has a shape that is basically the same as that of the first clamping surface 311, and another portion of the surface has a shape that is basically the same as that of the second clamping surface 321. The shape of the compressed end of the support member 5 is relatively regular, and the overall structure is flat.

[0067] The curvature of the first clamping surface 311 can be denoted as K1. In some embodiments, K1 satisfies: 1 / 35mm ≤ K1 ≤ 1 / 20mm. Optionally, the value of K1 can be 1 / 34mm, 1 / 33mm, 1 / 32mm, 1 / 31mm, 1 / 30mm, 1 / 29mm, 1 / 27mm, 1 / 25mm, 1 / 23mm, or 1 / 21mm.

[0068] In some specific embodiments, K1 satisfies: 1 / 30mm ≤ K1 ≤ 1 / 25mm. Optionally, the value of K1 can be 1 / 28mm, 1 / 26mm, or 1 / 24mm. Of course, the value of K1 can also be other values ​​that satisfy the above conditions, which will not be listed one by one in this application.

[0069] The curvature of the second clamping surface 321 can be denoted as K2. K2 can have the same range of values ​​as K1, which will not be elaborated in this application.

[0070] To ensure that the deformation degree of the side of the support member 5 compressed by the first clamping surface 311 is more consistent with the deformation degree of the side of the support member 5 compressed by the second clamping surface 321, thereby making the shape of the compressed end of the support member 5 more regular, in some embodiments, 0.9 ≤ K1 / K2 ≤ 1.1. Optionally, the value of K1 / K2 can be 0.92, 0.94, 0.96, 0.98, 1.0, 1.02, 1.04, 1.06, or 1.08. Of course, the value of K1 / K2 can also be other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0071] In the above embodiments, it can be understood that the curvature of the first clamping surface 311 and the curvature of the second clamping surface 321 are basically equal. Alternatively, it can be understood that the shapes of the first clamping surface 311 and the second clamping surface 321 are basically the same. After the first clamping surface 311 and the second clamping surface 321 compress the support member 5, the deformation degree of the side of the support member 5 compressed by the first clamping surface 311 and the deformation degree of the side of the support member 5 compressed by the second clamping surface 321 are relatively consistent, thereby making the shape of the compressed end of the support member 5 more regular.

[0072] In some embodiments, the first clamping surface 311 has a first axis of symmetry extending along a first direction Z. The second clamping surface 321 has a second axis of symmetry extending along a second direction X. The distance between the first and second axes of symmetry is the maximum distance between the first and second clamping surfaces 311 and 321. As the first jaw 31 and the second jaw 32 move, the distance between the first and second axes of symmetry also changes. As the first jaw 31 and the second jaw 32 gradually approach each other, the distance between the first and second axes of symmetry gradually decreases. When the support member 5 undergoes the required deformation under the pressure of the first jaw 31 and the second jaw 32, the distance between the first and second axes of symmetry reaches its minimum. When the minimum distance between the first and second axes of symmetry is large, the support member 5 may not be sufficiently compressed, and the compressed end of the support member 5 may not be able to be engaged in the positioning hole 3 of the wound cell 2. When the minimum distance between the first axis of symmetry and the second axis of symmetry is small, the support member 5 may be subjected to excessive compression. The maximum size of the cross-section of the compressed end of the support member 5 will be greater than the diameter of the positioning hole 3 of the winding cell 2, and the compressed end of the support member 5 will not be able to be inserted into the positioning hole 3.

[0073] In view of the above, in some embodiments, the minimum distance W between the first axis of symmetry and the second axis of symmetry satisfies: 20mm ≤ W ≤ 60mm. Optionally, the value of W can be 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, or 55mm.

[0074] In some specific embodiments, 46.5mm ≤ W ≤ 50mm. Optionally, the value of W can be 47mm, 47.5mm, 48mm, 48.5mm, 49mm, or 49.5mm. Of course, the value of W can also be other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0075] It is understandable that when the first clamping surface 311 and the second clamping surface 321 clamp and compress the support member 5, the portion of the support member 5 in contact with the first clamping surface 311 and the second clamping surface 321 will undergo compression deformation. Both ends of the first clamping surface 311 along the first direction Z and both ends of the second clamping surface 321 along the first direction Z can be in contact with the support member 5, or only one end of the first clamping surface 311 and the second clamping surface 321 can be in contact with the support member 5, while the other end extends beyond the support member 5. Therefore, the maximum length of the flattened portion of the support member 5 is the height of the first clamping surface 311 and the second clamping surface 321 along the first direction Z.

[0076] If the length of the flattened portion of the support member 5 is too large, this portion will continuously rub against the inner wall of the positioning hole 3 during insertion, resulting in greater resistance during insertion. If the length of the flattened portion of the support member 5 is too small, the contact area between the support member 5 and the inner wall of the positioning hole 3 after insertion will be insufficient, making it easy for the support member 5 to detach from the positioning hole 3.

[0077] In view of the above, in some embodiments of this application, the height H1 of the first clamping surface 311 and the second clamping surface 321 along the first direction Z and the height H2 of the support member 5 along the first direction Z satisfy: 0.02≤H1 / H2≤0.45. Accordingly, the maximum length of the flattened portion of the support member 5 is less than or equal to 0.45H2, and greater than or equal to 0.02H2, so that the flattened portion of the support member 5 has a suitable length, which can be conveniently inserted into the positioning hole 3 and can generate sufficient compression with the inner wall of the positioning hole 3, reducing the risk of the support member 5 falling out of the positioning hole 3.

[0078] Optionally, the value of H1 / H2 can be 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, or 0.4. Of course, the value of H1 / H2 can also be other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0079] In some specific embodiments, 0.03 ≤ H1 / H2 ≤ 0.35. Optionally, the value of H1 / H2 can be 0.06, 0.09, 0.12, 0.15, 0.18, 0.21, 0.24, 0.27, or 0.29. Of course, the value of H1 / H2 can also be other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0080] When specifically setting the height H1 of the first clamping surface 311 and the second clamping surface 321 along the first direction Z, in some embodiments, H1 satisfies: 3mm ≤ H1 ≤ 35mm. Optionally, the value of H1 can be 5mm, 10mm, 15mm, 20mm, 25mm or 30mm.

[0081] In some specific embodiments, H1 satisfies: 5mm ≤ H1 ≤ 30mm. Optionally, the value of H1 can be 8mm, 13mm, 18mm, 21mm, 24mm, or 27mm. Of course, the value of H1 can also be other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0082] In some embodiments, when setting the height H2 of the support member 5, the height H2 of the support member 5 satisfies: 20mm ≤ H2 ≤ 170mm. Optionally, the value of H2 can be 30mm, 50mm, 80mm, 110mm, 140mm or 160mm.

[0083] In some specific embodiments, H2 satisfies: 30mm ≤ H2 ≤ 150mm. Optionally, the value of H2 can be 40mm, 60mm, 70mm, 90mm, 100mm, 120mm, or 130mm. Of course, the value of H2 can also be other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0084] Figure 10 Schematic diagrams of the structure of the storage device provided in this application in some embodiments, such as Figure 10 As shown, the storage device 20 includes a storage box 21, which is used to store the support member 5. Figure 11 for Figure 10 The cross-sectional view of the storage bin shown is as follows: Figure 11 As shown, the storage bin 21 includes a bottom plate 211 and a first side plate 212, with the bottom plate 211 being inclined. The bottom plate 211 has a third end A and a fourth end B arranged along the inclined direction, with the third end A higher than the fourth end B. The first side plate 212 is located at the fourth end B of the bottom plate 211, and a discharge port 213 is located between the first side plate 212 and the fourth end B.

[0085] The aforementioned storage box 21 can store the tubular support member 5. Since the bottom plate 211 of the storage box 21 is inclined, the support member 5 can roll from the third end A to the fourth end B under the action of gravity, and finally detach from the storage box 21 through the discharge port 213.

[0086] When specifically setting the discharge port 213, taking the cylindrical support member 5 as an example, the dimension L of the discharge port 213 along the first direction Z and the outer diameter D of the support member 5 satisfy the following condition: D < L < 2D. In this way, only one support member 5 can slide out of the discharge port 213 at a time.

[0087] Of course, in addition to the first side plate 212, the storage box 21 also includes other side plates, which, together with the first side plate 212, surround the periphery of the bottom plate 211 and together with the bottom plate 211, form the storage space of the support member 5.

[0088] In the specific configuration of the first side plate 212, the first side plate 212 includes a first sub-plate 2121 and a second sub-plate 2122 connected to each other. The first sub-plate 2121 is parallel to the bottom plate 211, and the first sub-plate 2121 and the bottom plate 211 are spaced apart along a first direction Z. The gap between the first sub-plate 2121 and the bottom plate 211 forms a discharge channel, and the discharge port 213 is located at the end of the discharge channel. The second sub-plate 2122 is located at the end of the first sub-plate 2121 away from the discharge port 213, and the second sub-plate 2122 is bent relative to the first sub-plate 2121 toward the side opposite to the bottom plate 211.

[0089] The dimensions of the discharge channel along the first direction Z are the same as those of the discharge port 213 along the first direction Z. This means that the discharge channel along the first direction Z can only accommodate one support member 5. However, along the inclined direction of the base plate 211, multiple support members 5 can be arranged side-by-side within the discharge channel, and these support members 5 can pass through the discharge port 213 sequentially. The design of the discharge channel allows for smoother discharge of the support members 5, reducing the likelihood of them getting stuck at the discharge port 213 and unable to slide out.

[0090] Please continue to refer to this. Figure 10 In addition to the storage bin 21, the storage device 20 may also include a rotating wheel 22 and a first motor. Specifically, the rotating wheel 22 is located at the end of the storage bin 21 where the discharge port 213 is located. The rotating wheel 22 has multiple notches 221 along its circumference. The support member 5 slides out of the discharge port 213 and falls into the notches 221. The first motor can drive the rotating wheel 22 to rotate, causing the multiple notches 221 to rotate sequentially to positions corresponding to the discharge port 213. As the rotating wheel 22 rotates, the notches 221 containing the support member 5 gradually move away from the discharge port 213. The clamping device 30, driven by the driving device 40, can move to the position corresponding to the notches 221 and clamp the support member 5 within the notches 221.

[0091] like Figure 10 As shown, the rotating wheel 22 has four notches 221 arranged circumferentially, and these four notches 221 are evenly distributed. The first motor drives the rotating wheel 22 to rotate 90° each time, so that the four notches 221 rotate sequentially to the discharge port 213. Furthermore, when one of the notches 221 rotates to the discharge port 213 to receive the support member 5, another adjacent notch 221 that also accommodates the support member 5 can rotate to the top of the rotating wheel 22. The clamping device 30 can move to the corresponding position under the drive of the driving device 40 and clamp the support member 5.

[0092] When specifically arranging the rotating wheel 22, the axial length of the rotating wheel 22 is less than the axial length of the support member 5, so that after the support member 5 falls into the notch 221, the end of the support member 5 can extend to the outside of the rotating wheel 22. In this way, the clamping device 30 can clamp the end of the support member 5.

[0093] In some specific embodiments, the wheel 22 includes a central shaft and a plurality of flanges spaced apart along the extension direction of the central shaft, each flange surrounding the periphery of the central shaft, and each flange having a plurality of notches 221 evenly distributed circumferentially.

[0094] Figure 12 Schematic diagrams of the drive device provided in this application in some embodiments, such as Figure 12 As shown, the drive device 40 includes a robotic arm 41. The robotic arm 41 includes multiple sub-arms, with adjacent sub-arms connected by joints. A gripping device 30 is mounted on the end of the robotic arm 41. In addition to the robotic arm 41, the drive device 40 also includes multiple drive components. Exemplarily, these multiple drive components may include a first drive component and a second drive component. The first drive component drives two adjacent sub-arms to move relative to each other. The second drive component drives the first gripper 31 and the second gripper 32 in the gripping device 30 to move closer or further apart to grip or release the support member 5.

[0095] During the processing of the wound battery cell 2, the wound battery cell 2 can be manually moved to the set position of the support platform 10. Then, the clamping device 30 clamps the support member 5 under the drive of the drive device 40 and inserts the support member 5 into the positioning hole 3 of the wound battery cell 2.

[0096] To improve automation and accelerate the production efficiency of wound battery cell 2, such as Figure 3 As shown, in some embodiments, the winding battery cell processing equipment 1 further includes a conveyor belt 50 located on the support platform 10. The conveyor belt 50 is used to transport the wound battery cells 2. The conveyor belt 50 can transport multiple wound battery cells 2 simultaneously, and these wound battery cells 2 are arranged at intervals along the length direction of the conveyor belt 50. The clamping device 30 can insert the support member 5 into the corresponding positioning hole 3 during the transport of the wound battery cells 2, thereby improving production efficiency.

[0097] In order to keep the wound battery cell 2 stable during the transport process, a tray is placed on the conveyor belt 50. The surface of the tray has grooves, and the wound battery cell 2 is located in the grooves.

[0098] Please continue to refer to this. Figure 3The winding battery cell processing equipment 1 also includes a first clamping part 60, a second clamping part 70, and a second motor. Specifically, the first clamping part 60 and the second clamping part 70 are located on opposite sides of the conveyor belt 50. The first clamping part 60 and the second clamping part 70 can move closer together under the drive of the second motor to clamp the winding battery cell 2 to be processed on the conveyor belt 50, thus fixing the winding battery cell 2 in place. Then, the clamping device 30 can insert the support member 5 into the positioning hole 3 of the winding battery cell 2. After the support member 5 is inserted into the positioning hole 3, the first clamping part 60 and the second clamping part 70 can also move away from each other under the drive of the second motor to release the winding battery cell 2, allowing the winding battery cell 2 to continue moving with the conveyor belt 50.

[0099] Understandably, after the first clamping part 60 and the second clamping part 70 clamp the wound battery cell 2 to be processed, the conveyor belt 50 can still be in a conveying state, unaffected by the first clamping part 60 and the second clamping part 70. At this time, the wound battery cells 2 with and without the support member 5 inserted can continue to move with the conveyor belt 50. For the wound battery cells 2 with the support member 5 inserted, these wound battery cells 2 can gradually approach the unloading station. For the wound battery cells 2 without the support member 5 inserted, these wound battery cells 2 can gradually approach the first clamping part 60 and the second clamping part 70. Overall, the continuous operation of the conveyor belt 50 improves the production efficiency of the wound battery cells 2.

[0100] In some embodiments, the winding cell processing equipment 1 further includes a detection device for detecting the position of the positioning hole 3. The driving device 40 is used to drive the clamping device 30 to move according to the position information of the positioning hole 3, so as to insert the support member 5 into the positioning hole 3 with relatively high precision.

[0101] When specifically setting up the detection device, it can be a vision detection device, including an image acquisition module and an image processing module. Specifically, the image acquisition module can acquire images of the wound battery cell 2, and the image processing module determines the position of the positioning hole 3 based on the image. The drive device 40 drives the clamping device 30 to move according to the above position, so that the support member 5 can be inserted into the positioning hole 3 relatively accurately.

[0102] The winding cell processing equipment 1 in this application can be set near the winding device of the winding cell 2. The cell wound by the winding device can be transferred to a set position by a conveyor belt 50 or other transmission device, so that the clamping device 30 can clamp the support 5 and insert the support 5 into the positioning hole 3 of the winding cell 2.

[0103] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A winding battery cell processing equipment, characterized in that, include: Support platform, used to support the component to be supported; The component to be supported has a positioning hole, which extends along a first direction; Storage device for storing support components; Clamping device for clamping support components; A driving device, which is driven and connected to the clamping device, is used to: drive the clamping device to clamp the support member from the storage device; drive the clamping device to move along the first direction so that the support member is inserted into the positioning hole; the support member is a tubular structure and at least a portion of the surface of the support member abuts against the sidewall of the positioning hole.

2. The winding cell processing equipment as described in claim 1, characterized in that, The gripping device includes a first gripper and a second gripper, which are used to move closer together under the drive of the driving device to grip the support member; the first gripper and the second gripper are also used to move further apart under the drive of the driving device to release the support member.

3. The winding cell processing equipment as described in claim 2, characterized in that, The support member has a first end and a second end arranged along the length direction; The first and second grippers are used to move closer to each other under the drive of the drive device and to grip the second end; they are also used to squeeze the second end under the drive of the drive device so that the maximum size of the cross-section of the second end is greater than the maximum size of the cross-section of the first end. After the support is inserted into the positioning hole, the second end abuts against the side wall of the positioning hole.

4. The winding cell processing equipment as described in claim 2 or 3, characterized in that, The first gripper has a first gripping surface for gripping the support member, the first gripping surface extends along the first direction, and the first gripping surface is an arc surface that convexes in a direction away from the support member; The second gripper has a second gripping surface for gripping the support member, the second gripping surface extends along the first direction, and the second gripping surface is also an arc surface that convexes in a direction away from the support member.

5. The winding cell processing equipment as described in claim 4, characterized in that, The curvature K1 of the first clamping surface satisfies 1 / 35mm≤K1≤1 / 20mm; The curvature K2 of the second clamping surface satisfies 1 / 35mm≤K2≤1 / 20mm; 0.9≤K1 / K2≤1.

1.

6. The winding cell processing equipment as described in claim 4, characterized in that, The first clamping surface has a first axis of symmetry, which extends along the first direction; the second clamping surface has a second axis of symmetry, which also extends along the first direction. The minimum distance W between the first axis of symmetry and the second axis of symmetry satisfies: 20mm≤W≤60mm.

7. The winding cell processing equipment as described in claim 4, characterized in that, The height H1 of the first clamping surface and the second clamping surface along the first direction and the height H2 of the support member along the first direction satisfy: 0.02≤H1 / H2≤0.

45.

8. The winding cell processing equipment according to any one of claims 1 to 3, characterized in that, The storage device includes a storage box; the storage box includes a bottom plate and a first side plate, the bottom plate is inclined, and the bottom plate has a third end and a fourth end arranged along the inclined direction, the height of the third end is greater than the height of the fourth end; The first side plate is located at the fourth end, and there is a discharge port between the first side plate and the fourth end.

9. The winding cell processing equipment as described in claim 8, characterized in that, The first side plate includes a first sub-plate and a second sub-plate connected to each other; the first sub-plate and the bottom plate are parallel and are spaced apart along the first direction; the gap between the first sub-plate and the bottom plate forms a discharge channel, and the discharge port is located at the end of the discharge channel; The second sub-plate is located at the end of the first sub-plate away from the discharge port, and the second sub-plate is bent relative to the first sub-plate toward the side away from the bottom plate.

10. The winding cell processing equipment as described in claim 8, characterized in that, The storage device also includes a rotating wheel and a first motor; the rotating wheel is located at the end of the storage box where the discharge port is provided, and the rotating wheel has multiple notches along the circumference, and the support member slides out of the discharge port and falls into the notches; The first motor is used to drive the rotating wheel to rotate, so that the plurality of notches rotate sequentially to the position corresponding to the discharge port.

11. The winding cell processing equipment according to any one of claims 1 to 3, characterized in that, The winding cell processing equipment also includes a conveyor belt located on the support platform, which is used to transport the winding cells.

12. The winding cell processing equipment as described in claim 11, characterized in that, The winding cell processing equipment also includes a first clamping part, a second clamping part, and a second motor, wherein the first clamping part and the second clamping part are located on opposite sides of the conveyor belt; The second motor is used to drive the first clamping part and the second clamping part to move closer to each other, so as to clamp the support to be processed and insert the support into the positioning hole; The second motor is also used to drive the first clamping part and the second clamping part to move away from each other, so as to release the member to be supported.

13. The winding cell processing equipment according to any one of claims 1 to 3, characterized in that, The winding cell processing equipment also includes a detection device, which is used to detect the position of the positioning hole; The driving device is used to drive the clamping device to move according to the position information of the positioning hole, so as to insert the support into the positioning hole.

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