Pole piece clamping device

Abstract

The utility model relates to the technical field of battery production, and discloses a pole piece clamping device. The pole piece clamping device comprises a clamping assembly and a swinging assembly, and the clamping assembly comprises a bottom supporting plate, an upper pressing plate and a first driving module; the first driving module is used for driving the bottom supporting plate and the upper pressing plate to be relatively close to or away from each other; the swinging assembly comprises a rotating shaft and a second driving module, the rotating shaft is connected with the clamping assembly, and the second driving module is connected with the rotating shaft; the second driving module is used for driving the rotating shaft to positively rotate around the central axis, so that the clamping assembly swings to the position corresponding to the material table; or the second driving module is used for driving the rotating shaft to reversely rotate around the central axis, so that the clamping assembly is reset. According to the pole piece clamping device, in the process of transferring the pole piece, the clamping assembly can apply clamping force to the pole piece, so that the pole piece is kept relatively stable under the action of the clamping force, the risk of dislocation of the pole piece in the transferring process is reduced, and the positioning precision of the pole piece is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to an electrode clamping device. Background Technology

[0002] Lithium-ion batteries, as an energy storage unit, can convert chemical energy into electrical energy. The manufacturing process of lithium-ion batteries is divided into three stages: pre-processing, mid-processing, and post-processing. The pre-processing stage aims to process raw materials into electrode sheets; the mid-processing stage aims to process the electrode sheets into unactivated battery cells; and the post-processing stage aims to test and package the batteries. The mid-processing stage includes the stacking of electrode sheets to form the battery cell.

[0003] In a prior art, during the process of stacking electrodes to form a battery cell, a conveyor belt is used to transport the electrodes to a stacking table, and then a robotic arm is used to pick up the electrodes for stacking. However, the electrodes are prone to displacement during transport, which increases the risk of misalignment between adjacent electrodes after stacking, thus affecting the alignment of the electrodes and the quality of the battery cell. Utility Model Content

[0004] This invention provides an electrode clamping device to solve the problem in the prior art where electrodes are easily displaced during transmission, causing misalignment between adjacent electrodes after stacking.

[0005] This utility model provides an electrode clamping device, which includes a clamping assembly and a swinging assembly. The clamping assembly includes a base plate, an upper pressure plate, and a first driving module. The first driving module is used to drive the base plate and the upper pressure plate to move closer together to clamp the electrode; or, the first driving module is used to drive the base plate and the upper pressure plate to move away from each other to release the electrode.

[0006] The swing assembly includes a rotating shaft and a second drive module. The rotating shaft is connected to the gripping assembly, and the second drive module is connected to the rotating shaft. The second drive module is used to drive the rotating shaft to rotate forward about the central axis so that the gripping assembly swings to a position corresponding to the material platform. Alternatively, the second drive module is used to drive the rotating shaft to rotate in the opposite direction about the central axis so that the gripping assembly resets.

[0007] The beneficial effects of the electrode clamping device provided in this embodiment of the present invention are as follows:

[0008] In the process of transferring the electrode, the electrode clamping device described above uses a clamping component to clamp the electrode. The clamping component can apply a clamping force to the electrode, so that the electrode remains relatively stable under the action of the clamping force, thereby reducing the risk of misalignment of the electrode during the transfer process and improving the positioning accuracy of the electrode. Attached Figure Description

[0009] Figure 1 A schematic diagram of the electrode gripping device provided in an embodiment of this utility model;

[0010] Figure 2 This is a schematic diagram of a combination of the clamping assembly and the electrode sheet provided in an embodiment of the present utility model;

[0011] Figure 3 A schematic diagram of a base plate and a material platform provided in an embodiment of this utility model;

[0012] Figure 4 A schematic diagram of the clamping assembly provided in an embodiment of this utility model;

[0013] Figure 5 A schematic diagram of the structure of the second driving module provided in an embodiment of this utility model;

[0014] Figure 6 A schematic diagram of the structure of a first bevel gear provided in an embodiment of this utility model;

[0015] Figure 7 A partial schematic diagram of the electrode gripping device provided in an embodiment of this utility model;

[0016] Figure 8 A schematic diagram of a third driving module provided in an embodiment of this utility model.

[0017] Figure label:

[0018] 10-Clamping assembly; 11-Base plate;

[0019] 111 - Protrusion; 112 - Substrate portion;

[0020] 12-Upper pressure plate; 121-Pressure section;

[0021] 1210 - Via; 13 - First drive module;

[0022] 131 - First motor; 132 - Drive shaft;

[0023] 133 - Cam; 20 - Oscillating assembly;

[0024] 21-Shaft; 22-Second drive module;

[0025] 221 - First bevel gear; 2210 - First tooth;

[0026] 221a - Tooth surface region; 221b - Arc surface region;

[0027] 222 - Second bevel gear; 223 - Third bevel gear;

[0028] 23 - Frame; 30 - Lifting assembly;

[0029] 31-Connecting seat; 311-Base plate;

[0030] 312 - Connecting arm; 32 - Third drive module;

[0031] 321 - Third motor; 322 - Turntable;

[0032] 323 - Connecting rod; 40 - Electrode;

[0033] 41 - Long side; 42 - Short side;

[0034] 50 - Material platform; 51 - Groove;

[0035] 60-Slide rail. Detailed Implementation

[0036] The technical solutions in the exemplary embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this application. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of this application.

[0037] In the description of this application, unless otherwise expressly specified and limited, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term “multiple” refers to two or more; and the term “and / or” includes any and all combinations of one or more of the associated listed items. In particular, references to “the / described” object or “an” object are also intended to indicate one of a possible plurality of such objects.

[0038] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Furthermore, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this application. It should also be understood that, in the context of an element or feature being connected to another element(s) "upper," "lower," "inner," or "outer," it can be directly connected to the other element(s) "upper," "lower," "inner," or "outer," or indirectly connected to the other element(s) "upper," "lower," "inner," or "outer" through an intermediate element.

[0040] Figure 1 This is a schematic diagram of the electrode gripping device provided in an embodiment of this application, as shown below. Figure 1 As shown, in one embodiment, the electrode gripping device includes a clamping assembly 10 and a swinging assembly 20. Simply put, the clamping assembly 10 is used to clamp the electrode, and the swinging assembly 20 is used to drive the clamping assembly 10 to swing, causing the clamping assembly 10 to swing back and forth between the material table and the worktable.

[0041] Specifically, the clamping assembly 10 includes a base plate 11, an upper pressure plate 12, and a first drive module 13. The first drive module 13 is used to drive the base plate 11 and the upper pressure plate 12 closer together to clamp the electrode; or, the first drive module 13 is used to drive the base plate 11 and the upper pressure plate 12 further apart to release the electrode.

[0042] The swing assembly 20 includes a rotating shaft 21 and a second drive module 22. The rotating shaft 21 is connected to the gripping assembly 10. When the rotating shaft 21 rotates around its central axis, the gripping assembly 10 also rotates around the same central axis. The second drive module 22 is connected to the rotating shaft 21 and drives the rotating shaft 21 to rotate forward around the central axis, causing the gripping assembly 10 to swing to a gripping position corresponding to the material table, thereby allowing the gripping assembly 10 to grip the electrode placed on the material table. The second drive module 22 also drives the rotating shaft 21 to rotate in the opposite direction around the central axis, causing the gripping assembly 10 to reset. After resetting, the gripping assembly 10 can release the electrode.

[0043] It is worth noting that the terms "forward rotation" and "reverse rotation" are intended to indicate that the rotation direction of the shaft 21 is opposite, and do not specifically limit the rotation direction of the shaft 21. For example, forward rotation can refer to rotation in a clockwise direction or rotation in a counterclockwise direction.

[0044] In the process of transferring the electrode, the aforementioned electrode clamping device uses a clamping assembly 10 to clamp the electrode and a swinging assembly 20 to drive the clamping assembly 10 to swing, thereby transferring the electrode from the material table to the worktable. The clamping assembly 10 can apply a clamping force to the electrode, making the electrode relatively stable under the action of the clamping force, thereby reducing the risk of misalignment of the electrode during the transfer process and improving the positioning accuracy of the electrode.

[0045] Furthermore, in the aforementioned electrode clamping device, the clamping component 10 is suspended and connected to the rotating shaft 21. Driven by the second drive module 22, the clamping component 10 can reciprocate between the material table and the worktable. In the specific arrangement of the electrode clamping device, the material table, and the worktable, the three have a spatial relationship, resulting in a compact arrangement, minimal space occupation, and high space utilization.

[0046] Figure 2 This is a schematic diagram of a combination of a clamping assembly and an electrode sheet provided in an embodiment of the present invention. As shown in the figure, in one embodiment, the electrode sheet 40 has a long side 41 and a short side 42, wherein the extending direction of the long side 41 is perpendicular to the extending direction of the short side 42, and the size of the long side 41 is larger than the size of the short side 42. When clamping the electrode sheet 40, the bottom support plate 11 and the upper pressure plate 12 are used to clamp it from the side where the long side 41 is located, and the size of the bottom support plate 11 along the extending direction of the long side 41 is greater than or equal to the size of the long side 41. After the electrode sheet 40 is clamped by the bottom support plate 11 and the upper pressure plate 12, both ends of the electrode sheet 40 arranged along the extending direction of the long side 41 can be supported by the bottom support plate 11, so that the two ends of the electrode sheet 40 arranged along the extending direction of the long side 41 will not bend under the action of gravity.

[0047] In practical applications, for electrode sheets 40 with a large difference in size between the long side 41 and the short side 42, the electrode sheet 40 is generally elongated. After the bottom support plate 11 and the upper pressure plate 12 clamp the electrode sheet 40, the bottom support plate 11 can provide good support at the bottom of the electrode sheet 40, reducing the deformation of the electrode sheet 40 during the transfer process and improving the positioning accuracy of the electrode sheet 40.

[0048] In addition to setting the size of the bottom support plate 11 to be greater than or equal to the size of the long side 41, the size of the upper pressure plate 12 can also be set to be greater than or equal to the size of the long side 41, so that both ends of the electrode 40 arranged along the extension direction of the long side 41 can be clamped by the bottom support plate 11 and the upper pressure plate 12, thereby increasing the clamped area of ​​the electrode 40 and improving the stability of the electrode 40.

[0049] Figure 3 This is a schematic diagram of a combination of a base plate and a material platform provided in an embodiment of the present utility model, as shown below. Figure 3As shown, in one embodiment, the edge of the material platform 50 is provided with a groove 51, and the electrode 40 located on the material platform 50 can cover at least a portion of the groove 51. The edge of the bottom support plate 11 has a protrusion 111 that mates with the groove 51, and the orthographic projection of the upper pressure plate 12 on the plane of the bottom support plate 11 at least covers a portion of the protrusion 111. When the clamping assembly 10 swings to a position corresponding to the material platform 50, the protrusion 111 is inserted into the groove 51, at which time at least a portion of the protrusion 111 is located below the electrode 40. Then, driven by the first drive module 13, the upper pressure plate 12 and the bottom support plate 11 can move closer together, thereby clamping the electrode 40 between them.

[0050] When specifically setting the protrusion 111, the number of protrusions 111 can be one or more. When the base plate 11 includes multiple protrusions 111, these multiple protrusions 111 are arranged at intervals along the first direction X. After the base plate 11 and the upper pressure plate 12 clamp the electrode 40, the aforementioned multiple protrusions 111 are distributed at different positions below the electrode 40 along the first direction X, thereby forming support at multiple positions below the electrode 40. Furthermore, each protrusion 111 and the upper pressure plate 12 can clamp the electrode 40, making the force on the electrode 40 relatively uniform.

[0051] When specifically setting the spacing between two adjacent protrusions 111, the spacing affects the density of the protrusions 111. When the spacing between two adjacent protrusions 111 is small, the protrusions 111 are arranged more densely, making it more difficult to position the protrusions 111 and the groove 51, and the bottom support plate 11 and the material table 50 may collide. When the spacing between two adjacent protrusions 111 is large, the protrusions 111 are arranged more sparsely, which will affect the supporting effect of the bottom support plate 11 on the electrode 40, making the electrode 40 more prone to deformation under the pressure of the upper pressure plate 12. In view of the above, in one embodiment, the spacing between two adjacent protrusions 111 is W1, where W1 satisfies the following formula: 30mm ≤ W1 ≤ 100mm. Optionally, the value of W1 can be 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, or other values ​​within the above range, which are not listed in this application.

[0052] When specifically setting the dimensions of the protrusion 111 along the first direction X, the dimensions of the protrusion 111 along the first direction X affect the width of the protrusion 111. When the dimensions of the protrusion 111 along the second direction Y are fixed (the second direction Y is perpendicular to the first direction X and parallel to the plane of the bottom support plate 11), a larger dimensions of the protrusion 111 along the first direction X result in a wider protrusion 111. Correspondingly, the groove 51 provided in the material table 50 must also be wider to accommodate the protrusion 111. However, a wider groove 51 will affect the structural strength of the material table 50. When the dimensions of the protrusion 111 along the first direction X are smaller, the protrusion 111 is narrower, and its area is also smaller. Under the clamping action of the protrusion 111 and the upper pressure plate 12, the force-bearing area of ​​the electrode 40 is also smaller, making the electrode 40 prone to deformation and thus unable to maintain flatness. In view of the above, in one embodiment, the width of the protrusion 111 along the first direction X is W2, and W2 satisfies the following formula: 30mm≤W2≤100mm. Optionally, the value of W2 can be 40mm, 50mm, 60mm, 70mm, 80mm, 90mm or other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0053] When specifically setting the dimension of the protrusion 111 along the second direction Y, the dimension of the protrusion 111 along the second direction Y affects the mating depth between the protrusion 111 and the groove 51 located at the edge of the material table 50, and also affects the length of the portion of the electrode 40 clamped by the protrusion 111 and the upper pressure plate 12 along the second direction Y. The larger the dimension of the protrusion 111 along the second direction Y, the greater the depth of the protrusion 111 inserted into the groove 51, the longer the length of the portion of the electrode 40 clamped by the protrusion 111 and the upper pressure plate 12 along the second direction Y, and the more stable the electrode 40. In one embodiment, the dimension of the protrusion 111 along the second direction Y is L1, and after the bottom support plate 11 and the upper pressure plate 12 clamp the electrode 40, the dimension of the electrode 40 along the second direction Y is L2, where L1 ≥ 1 / 2 L2. When the upper pressure plate 12 and the bottom support plate 11 clamp the electrode 40, the upper pressure plate 12 and the bottom support plate 11 can hold most of the electrode 40 along the second direction Y, so that the electrode 40 can remain flat during the transmission process, thereby improving the positioning accuracy of the electrode 40.

[0054] Please continue to refer to Figure 3 In one specific embodiment, the base plate 11 further includes a base plate portion 112, the base plate portion 112 having a first side and a second side arranged along a second direction Y, a protrusion 111 located on the first side, and the protrusion 111 connected to the base plate portion 112. There are multiple protrusions 111, which are spaced apart along the first direction X, and the dimension of each protrusion 111 along the first direction X is smaller than the dimension of the base plate portion 112 along the first direction X.

[0055] The protrusion 111 and the substrate 112 can be an integral structure, or the protrusion 111 and the substrate 112 can be fixedly connected by welding, bonding or snap-fitting.

[0056] In the specific configuration of the first drive module 13, the first drive module 13 includes various structural forms. For example... Figure 4 As shown, in one embodiment, the first drive module 13 includes a first motor 131, a drive shaft 132, and two cams 133. The first motor 131 is connected to the drive shaft 132, and the first motor 131 drives the drive shaft 132 to rotate. The two cams 133 are arranged along the length of the drive shaft 132 and fixed to the drive shaft 132. During the rotation of the drive shaft 132, the two cams 133 will also rotate. The two cams 133 are located on the side of the upper pressure plate 12 facing the bottom support plate 11, and the two cams 133 are supported at both ends of the upper pressure plate 12. Driven by the first motor 131, the cams 133 will drive the upper pressure plate 12 closer to or away from the bottom support plate 11.

[0057] For any given cam 133, its outer contour has a distal end and a proximal end relative to its rotation center. The distance between the outer contour of the cam 133 and the rotation center gradually decreases from the distal end to the proximal end. During rotation, different positions of the outer contour of the cam 133 will contact the upper pressure plate 12. When the distal end of the cam 133 contacts the upper pressure plate 12, the upper pressure plate 12 is lifted by the cam 133, and the gap between the upper pressure plate 12 and the bottom support plate 11 is at its maximum. When the proximal end of the cam 133 contacts the upper pressure plate 12, the upper pressure plate 12 falls, and the gap between the upper pressure plate 12 and the bottom support plate 11 is at its minimum, allowing the upper pressure plate 12 and the bottom support plate 11 to clamp the electrode.

[0058] In the first drive module 13 described above, two cams 133 are fixed to a drive shaft 132 and can rotate synchronously with the drive shaft 132, resulting in good motion consistency. Furthermore, the two cams 133 can support the upper pressure plate 12 at both ends, making the upper pressure plate 12 subject to more uniform force and higher stability. Especially when the clamping assembly 10 is used to clamp long electrode sheets, both the base plate 11 and the upper pressure plate 12 are relatively long. By supporting the upper pressure plate 12 at both ends, the two cams 133 reduce the swaying of the upper pressure plate 12 during movement, allowing the upper pressure plate 12 to smoothly move away from or towards the base plate 11. In addition, the first drive module 13 only requires one motor to drive the two cams 133 to rotate synchronously, thus simplifying the structure and reducing the space occupied.

[0059] When specifically setting the pressure plate 12, such as Figure 4As shown, in one embodiment, the upper pressure plate 12 includes a pressing portion 121, which protrudes towards the bottom support plate 11 and is used to clamp the electrode sheet with the bottom support plate 11. The side wall of the pressing portion 121 is provided with a through hole 1210, through which the drive shaft 132 passes. Specifically, when the through hole 1210 is provided, its diameter is larger than the diameter of the drive shaft 132, so that the edge of the through hole 1210 will not interfere with the drive shaft 132 during the up-and-down movement of the pressing portion 121. The two cams 133 are located on both sides of the pressing portion 121. During the rotation of the cams 133, when the distal end of the cam 133 contacts the upper pressure plate 12, the pressing portion 121 moves away from the bottom support plate 11, and the gap between the pressing portion 121 and the bottom support plate 11 is at its maximum. When the proximal end of the cam 133 contacts the upper pressure plate 12, the gap between the pressing part 121 and the bottom support plate 11 is at its minimum, and the pressing part 121 and the bottom support plate 11 can clamp the electrode sheet.

[0060] In addition to the above-mentioned structural forms, the first drive module 13 may also include any one of a cylinder, a hydraulic cylinder, a lead screw, or a linear motor.

[0061] When specifically configuring the second drive module 22, the second drive module 22 includes various structural forms. Figure 5 A schematic diagram of the structure of the second drive module provided in an embodiment of this utility model is shown below. Figure 5 As shown, in one embodiment, the second drive module 22 includes a first bevel gear 221, a second bevel gear 222, a third bevel gear 223, and a second motor (not labeled). The first bevel gear 221 is connected to the second motor, and the first bevel gear 221 can rotate under the drive of the second motor. The second bevel gear 222 and the third bevel gear 223 are fixed to the rotating shaft 21, and are located on opposite sides of the first bevel gear 221.

[0062] Figure 6 A schematic diagram of the structure of the first bevel gear provided in an embodiment of this utility model is shown below. Figure 6 As shown, in one embodiment, the first bevel gear 221 includes a tooth surface region 221a and an arc surface region 221b. The tooth surface region 221a has a plurality of first teeth 2210, and the arc surface region 221b is a smooth arc surface, with the first teeth 2210 protruding from the arc surface region 221b. Alternatively, it can be understood that the first bevel gear 221 has teeth only in a portion of its area. The second motor is specifically used to drive the first bevel gear 221 to rotate, causing the first teeth 2210 to alternately mesh with the second bevel gear 222 and the third bevel gear 223.

[0063] Specifically, during the meshing of the first tooth 2210 and the second bevel gear 222, the arc-shaped region 221b and the third bevel gear 223 are opposite each other. The first tooth 2210 drives the second bevel gear 222 to rotate in the forward direction, causing the second bevel gear 222 to drive the rotating shaft 21 to rotate in the forward direction. During this process, the third bevel gear 223 rotates synchronously with the rotating shaft 21. After the first tooth 2210 and the second bevel gear 222 disengage, the first tooth 2210 continues to rotate until the first tooth 2210 and the third bevel gear 223 mesh. During the meshing of the first tooth 2210 and the third bevel gear 223, the arc-shaped region 221b and the second bevel gear 222 are opposite each other. The first tooth 2210 drives the third bevel gear 223 to rotate in the reverse direction, causing the third bevel gear 223 to drive the rotating shaft 21 to rotate in the reverse direction. During this process, the second bevel gear 222 rotates synchronously with the rotating shaft 21.

[0064] Please continue to refer to Figure 6 In one embodiment, the first bevel gear 221 includes multiple tooth surface regions 221a, which are uniformly distributed circumferentially, and each tooth surface region 221a has multiple first teeth 2210. When the first bevel gear 221 includes multiple tooth surface regions 221a, the gap between the alternating meshing of the first bevel gear 221 and the second bevel gear 222 and the third bevel gear 223 is shortened, thereby increasing the frequency of the oscillation of the clamping assembly 10 and improving working efficiency.

[0065] In one specific embodiment, the central angle corresponding to the tooth surface region 221a is θ, where 0°≤θ≤30°. Optionally, the value of θ can be 10°, 15°, 20°, 25°, or other values ​​that satisfy the above range, which will not be listed one by one in this application.

[0066] When specifically configuring the second bevel gear 222 and the third bevel gear 223, the second bevel gear 222 and the third bevel gear 223 can have teeth evenly distributed along the circumference, or the second bevel gear 222 and the third bevel gear 223 can have teeth only in certain areas. For example... Figure 5 As shown, in one specific embodiment, the second bevel gear 222 and the third bevel gear 223 are provided with teeth only in local areas.

[0067] Figure 7 A partial schematic diagram of the electrode gripping device provided in an embodiment of this utility model is shown below. Figure 7As shown, in one embodiment, the electrode clamping device further includes a lifting assembly 30, which is located between the rotating shaft 21 and the clamping assembly 10. Simply put, the lifting assembly 30 is used to drive the clamping assembly 10 away from or towards the rotating shaft 21, and also to cause the clamping assembly 10 to swing around the rotating shaft 21. Specifically, the lifting assembly 30 includes a connecting seat 31 and a third drive module 32. The connecting seat 31 is connected to the rotating shaft 21, and the rotating shaft 21 causes the connecting seat 31 to swing during rotation around its central axis. The third drive module 32 is fixed to the connecting seat 31 and connected to the clamping assembly 10, and is used to drive the clamping assembly 10 towards or away from the connecting seat 31.

[0068] In one application scenario, after the gripping component 10 grips the electrode sheet from the material table 50, the third drive module 32 can drive the gripping component 10 to move closer to the connecting seat 31, causing the gripping component 10 to detach from the material table; then, the swing component 20 drives the gripping component 10 to swing, causing the gripping component 10 to swing with the electrode sheet to the worktable. Of course, in other application scenarios, the third drive module 32 can also drive the gripping component 10 to move closer to or away from the connecting seat 31, which will not be listed in this application.

[0069] When specifically configuring connector 31, such as Figure 7 As shown, in one embodiment, the connecting base 31 includes a base plate 311 and two connecting arms 312. The two connecting arms 312 are located at both ends of the base plate 311 and are connected to the rotating shaft 21. The third drive module 32 is fixed to the base plate 311, and the base plate 311 is provided with a through hole. The third drive module 32 is connected to the clamping assembly 10 through the through hole.

[0070] In the above embodiment, the base plate 311 and the two connecting arms 312 form a space to accommodate the third drive module 32, thereby making the layout of the third drive module 32 more reasonable. In addition, the two connecting arms 312 are located at both ends of the third drive module 32 and connected to the rotating shaft 21. The two connecting arms 312 can jointly bear the weight of the third drive module 32, the base plate 311 and the clamping assembly 10, making the whole more stable.

[0071] When specifically configuring the third drive module 32, the third drive module 32 includes various structural forms. Figure 8 A schematic diagram of the structure of the third drive module provided in an embodiment of this utility model is shown below. Figure 8As shown, in one embodiment, the third drive module 32 includes a third motor 321, a turntable 322, and a connecting rod 323. The third motor 321 is driven to rotate the turntable 322. The connecting rod 323 is connected to the turntable 322, and the connection position between the connecting rod 323 and the turntable 322 is far from the rotation center of the turntable 322. One end of the connecting rod 323 away from the turntable 322 is connected to the gripping assembly 10. During the rotation of the turntable 322, it drives the connecting rod 323 to perform circular motion. The movement trajectory of the connecting rod 323 has a highest point and a lowest point, and the connecting rod 323 cycles back and forth between the highest point and the lowest point, thereby driving the gripping assembly 10 to move up and down.

[0072] Please continue to refer to Figure 1 In one embodiment, the electrode clamping device further includes two slide rails 60, which are arranged vertically. The swing assembly 20 also includes a frame 23, with both ends of the rotating shaft 21 rotatably connected to the frame 23 via bearings, and a second motor fixed to the frame 23. The two slide rails 60 are located at both ends of the frame 23 along the extension direction of the rotating shaft 21, and the frame 23 is slidably connected to the slide rails 60 via sliders. In one application scenario, by sliding the frame 23 along the slide rails 60, the clamping assembly 10, the swing assembly 20, and the lifting assembly 30 can be simultaneously driven to rise or fall vertically, thereby moving to the desired position.

[0073] 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. An electrode clamping device, characterized in that, It includes a clamping assembly and a swinging assembly, wherein the clamping assembly includes a base plate, an upper pressure plate and a first drive module; The first driving module is used to drive the base plate and the upper pressure plate closer together to clamp the electrode sheet; or, the first driving module is used to drive the base plate and the upper pressure plate further apart to release the electrode sheet. The swing assembly includes a rotating shaft and a second drive module. The rotating shaft is connected to the gripping assembly, and the second drive module is connected to the rotating shaft. The second drive module is used to drive the rotating shaft to rotate forward about the central axis so that the gripping assembly swings to a position corresponding to the material platform. Alternatively, the second drive module is used to drive the rotating shaft to rotate in the opposite direction about the central axis so that the gripping assembly resets.

2. The electrode clamping device as described in claim 1, characterized in that, The electrode has a long side and a short side, the extension direction of the long side is perpendicular to the extension direction of the short side, and the size of the long side is larger than the size of the short side. The bottom support plate and the upper pressure plate are used to clamp the electrode sheet from the side where the long side is located, and the dimension of the bottom support plate along the extension direction of the long side is greater than or equal to the dimension of the long side.

3. The electrode clamping device as described in claim 1 or 2, characterized in that, The edge of the material stage has a groove, and the electrode located on the material stage covers at least part of the groove; The base plate includes a protrusion that mates with the groove, and the projection of the upper pressure plate onto the plane of the base plate at least partially covers the protrusion. When the gripping assembly swings to a position corresponding to the material platform, the protrusion is inserted into the groove.

4. The electrode clamping device as described in claim 3, characterized in that, The base plate includes a plurality of protrusions, and the plurality of protrusions are arranged at intervals along a first direction; wherein: The maximum dimension of the protrusion along the second direction is L1. After the bottom support plate and the upper pressure plate clamp the electrode sheet, the dimension of the electrode sheet along the second direction is L2, and L1≥1 / 2L2. The second direction is parallel to the plane where the bottom support plate is located, and the second direction is perpendicular to the first direction. And / or, the distance between two adjacent protrusions is W1, wherein W1 satisfies the following formula: 30mm≤W1≤100mm; And / or, the dimension of the protrusion along the first direction is W2, and W2 satisfies the following formula: 30mm≤W2≤100mm.

5. The electrode clamping device as described in claim 1 or 2, characterized in that, The first drive module includes a first motor, a drive shaft, and two cams; The first motor is connected to the drive shaft, and the first motor is used to drive the drive shaft to rotate; The two cams are arranged along the extension direction of the drive shaft and are fixed to the drive shaft; the two cams are located on the side of the upper pressure plate facing the bottom support plate and are supported at both ends of the upper pressure plate; The two cams are used to move the upper pressure plate closer to or away from the bottom support plate during rotation.

6. The electrode clamping device as described in claim 5, characterized in that, The upper pressure plate includes a pressing part that protrudes toward the bottom support plate and is used to clamp the electrode sheet with the bottom support plate; The sidewall of the pressing part is provided with a through hole, and the drive shaft passes through the through hole; The two cams are located on both sides of the pressing part.

7. The electrode clamping device as described in claim 1 or 2, characterized in that, The second drive module includes a first bevel gear, a second bevel gear, a third bevel gear, and a second motor; the first bevel gear and the second motor are connected, and the first bevel gear includes a tooth surface area and an arc surface area, wherein a plurality of first teeth are provided in the tooth surface area, and the arc surface area is a smooth arc surface; The second bevel gear and the third bevel gear are fixed to the rotating shaft, and the second bevel gear and the third bevel gear are located on opposite sides of the first bevel gear; The second motor is used to drive the first bevel gear to rotate, so that the first tooth alternately meshes with the second bevel gear and the third bevel gear; during the meshing of the first tooth and the second bevel gear, the rotating shaft rotates in the forward direction around the central axis; during the meshing of the first tooth and the third bevel gear, the rotating shaft rotates in the reverse direction around the central axis.

8. The electrode clamping device as described in claim 7, characterized in that, The first bevel gear includes a plurality of tooth surface regions, and the plurality of tooth surface regions are evenly distributed circumferentially.

9. The electrode clamping device as described in claim 1 or 2, characterized in that, It also includes a lifting assembly located between the rotating shaft and the clamping assembly; The lifting assembly includes a connecting seat and a third drive module. The connecting seat is connected to the rotating shaft. The third drive module is fixed to the connecting seat and connected to the clamping assembly. The third drive module is used to drive the clamping assembly to move closer to or away from the connecting seat.

10. The electrode clamping device as described in claim 9, characterized in that, The connecting seat includes a base plate and two connecting arms, which are located at both ends of the base plate and are connected to the rotating shaft. The third drive module is fixed to the base plate, which has a through hole. The third drive module is connected to the clamping assembly through the through hole.

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