Clamping device
By designing a clamping device for battery cells, the first abutment member and the second abutment member are used to cooperate, and the problem of welding gun head deviating from the gap is solved, and the yield rate of welding is improved.
Patent Information
- Application Number
- CN202420952023.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-04-30
AI Technical Summary
During the welding process of battery shell, the yield rate of the weld is low, mainly because the movement trajectory of the welding gun head is prone to deviate from the direction of the gap extension that needs to be welded.
A clamping device is designed, including a first abutment member and a second abutment member. The movement of the battery cell is restricted by the abutment mechanism to ensure that it is fitted with the first abutment member, so that the gap extension direction of the battery cell of different welding batches is consistent with the movement trajectory of the welding gun head.
Through the use of clamping devices, the risk of welding gun head deviating from welding gaps is reduced, and the yield rate of welds during welding is improved.
Smart Images
Figure CN222806379U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery production, and in particular, to a clamping device. Background Art
[0002] Battery cell shell welding is an essential process in the battery production process, and is mainly used in the production of battery cells. Shell welding refers to filling the gaps between the various components of the battery cell shell by welding.
[0003] In the shell welding process, in addition to the uniformity of weld coverage, the weld yield is also an issue that needs to be considered. Utility Model Content
[0004] The embodiment of the present application provides a clamping device, which is beneficial to improving the yield rate of welds during the shell welding process.
[0005] The embodiment of the present application provides a clamping device for clamping a battery cell, the clamping device comprising a first abutment and an abutment mechanism, wherein the abutment mechanism comprises a base and a second abutment, the second abutment being rotatably disposed on the base, the first abutment approaching the second abutment along a first direction so as to abut against two opposite surfaces of the battery cell in the first direction with the second abutment respectively, and the rotation axis of the second abutment being perpendicular to the first direction.
[0006] In the technical solution of the embodiment of the present application, the second abutment is rotatably arranged on the base, and the rotation axis of the second abutment is perpendicular to the first direction, so that when the first abutment and the second abutment respectively abut against two opposite surfaces of the battery cell in the first direction to limit the movement of the battery cell in the first direction, the second abutment can be rotated relative to the base so that the side of the battery cell facing the first abutment can be fitted with the first abutment, so that the side of the battery cell facing the first abutment of different welding batches can be fitted with the side of the first abutment used to abut against the battery cell, and further, the gaps that need to be welded in the battery cells of different welding batches can be fitted with the side of the first abutment used to abut against the battery cell, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the yield rate of the weld during the welding process.
[0007] In some embodiments, there are multiple abutment mechanisms, and the multiple abutment mechanisms are arranged along the extension direction of the first abutment member, and the extension direction of the first abutment member is perpendicular to the first direction.
[0008] In the above technical solution, the abutment mechanism is arranged in a plurality along the extension direction of the first abutment member. On the one hand, the clamping device can clamp a plurality of battery cells at the same time, reducing the clamping time required for clamping a plurality of battery cells, thereby improving welding efficiency; on the other hand, the battery cells in the plurality of abutment mechanisms are all based on the same first abutment member, so that the side of the plurality of battery cells facing the first abutment member fits with the side of the first abutment member used for abutting the battery cells, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the weld quality rate during welding.
[0009] In some embodiments, the second abutment member includes a second body and a rotating shaft. The second body has a second side surface facing the first abutment member, and the second side surface is used to abut against the battery cell. The rotating shaft is disposed on a side of the second body away from the second side surface and is rotatably disposed on the base.
[0010] In the above technical solution, the rotating shaft rotates to drive the second side surface to rotate around the rotating axis, so that when the first abutment member and the second abutment member limit the movement of the battery cell in the first direction, the side of the battery cell facing the first abutment member can fit with the first abutment member, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the yield rate of the weld during the welding process.
[0011] In some embodiments, the abutment mechanism further includes a pair of stoppers. Along the second direction, the pair of stoppers are arranged at intervals. When the second side abuts against the battery cell, along the second direction, the battery cell is located between the pair of stoppers and abuts against at least one of the pair of stoppers. The first direction, the second direction, and the rotation axis direction of the second abutment are perpendicular to each other.
[0012] In the above technical solution, when the second side surface abuts against the battery cell, the battery cell is located between the pair of limiters along the second direction and abuts against at least one of the pair of limiters. Therefore, when the first abutment member and the second abutment member limit the movement of the battery cell in the first direction, the movement of the battery cell in the second direction is limited, thereby reducing the risk of missed welding and repeated welding when welding the weld extending along the second direction on the housing, and improving the weld quality rate during the welding process.
[0013] In some embodiments, the base includes a first base, an adjustment assembly, and a second base arranged in sequence along a first direction, and the rotating shaft is rotatably disposed on the second base. Along the first direction, the second body is located between the second base and the first abutment. The adjustment assembly is configured to drive the second base to drive the second abutment to move toward the first abutment.
[0014] In the above technical solution, the base includes an adjustment component, which can drive the second base to drive the second abutment to move toward the first abutment, thereby driving the battery cell to abut against the first abutment, thereby reducing the risk of inconsistent relative positions of gaps to be welded in the first direction of battery cells in different welding batches due to different sizes of battery cells in the first direction, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the yield rate of the weld during the welding process.
[0015] In some embodiments, the second base bodies are two that are spaced apart from each other along the rotation axis direction of the second abutting member, and the two ends of the rotating shaft are rotatably disposed on the two second base bodies respectively.
[0016] In the above technical solution, the second base can provide support force to the rotating shaft. The two ends of the rotating shaft are rotatably arranged on the two second bases respectively, and the two second bases can evenly support the rotating shaft, so that the rotating shaft can be fully supported, thereby improving the service life of the second abutment member.
[0017] In some embodiments, the adjustment assembly includes a first elastic member. The first elastic member is disposed between the second substrate and the first substrate along the first direction. The first elastic member is used to provide elastic force to the second substrate to drive the second substrate to move toward the first abutment member.
[0018] In the above technical solution, the second base is driven to move toward the first abutment member by the first elastic member, and the second abutment member can be driven close to the first abutment member by the elastic force. When the battery cell abuts against both the first abutment member and the second abutment member, and the first abutment member approaches the second abutment member along the first direction, the risk of damage to the battery cell due to excessive pressure can be reduced through the elastic deformation of the first elastic member.
[0019] In some embodiments, a first guide hole is formed on the second substrate. The adjustment assembly further includes a first guide rod extending along a first direction, the first guide rod is slidably disposed in the first guide hole, and one end of the first guide rod is connected to the first substrate.
[0020] In the above technical solution, the first guide rod is connected to the first base and is slidably disposed on the second base so that when the first elastic member drives the second base to move, the first guide rod can guide the second base to move along the first direction.
[0021] In some embodiments, the first elastic member is sleeved on the first guide rod, and two ends of the first elastic member are respectively in contact with the first base and the second base.
[0022] In the above technical solution, the first elastic member is sleeved on the first guide rod, so that the first elastic member can drive the second base to move relative to the first base along the first direction, which has a simple structure and is easy to assemble.
[0023] In some embodiments, the first abutment member includes a first body and a first protrusion. Along the first direction, the first body has a first side surface facing the abutment mechanism. The first protrusion protrudes from the first side surface, and the first protrusion is used to press the edge of the sealing nail against the battery cell. The first abutment member has a first through hole that penetrates the first body and the first protrusion, and the first through hole is used for the welding gun head to pass through.
[0024] In the above technical solution, the first protrusion protrudes from the first side surface and is used to press the edge of the sealing pin against the battery cell, thereby limiting the relative movement of the sealing pin and the battery cell during welding, thereby reducing the risk of the welding gun head deviating from the gap where the sealing pin needs to be welded.
[0025] In some embodiments, the first abutting member further includes a second protrusion, the second protrusion protrudes from the first side surface, and the second protrusion is used to abut against a side of the battery cell facing the first side surface.
[0026] In the above technical solution, the second protrusion protrudes from the first side surface and is used to abut against the side of the battery cell facing the first side surface, so that the second protrusion fits against the side of the battery cell facing the first abutment, thereby reducing the risk of the welding gun head deviating from the welding gap.
[0027] In some embodiments, there are multiple second protrusions, and the multiple second protrusions are multiple rows of second protrusions arranged at intervals along the second direction. Each row of second protrusions is a plurality of second protrusions arranged at intervals along the direction of the rotation axis of the second abutment member, and the first direction, the second direction and the direction of the rotation axis of the second abutment member are perpendicular to each other.
[0028] In the above technical solution, there are multiple second protrusions, and the multiple second protrusions are multiple rows of second protrusions arranged at intervals along the second direction, and each row of second protrusions is multiple second protrusions arranged at intervals along the direction of the rotation axis of the second abutment. Therefore, the pressure of the first abutment on the side of the battery cell facing the first side is more evenly distributed on the side of the battery cell facing the first side, which is beneficial to reducing the risk of the welding gun head deviating from the welding gap.
[0029] In some embodiments, it is characterized in that the clamping device further includes a driving component configured to drive the first abutment member to reciprocate along the first direction.
[0030] In the above technical solution, the driving component drives the first abutment member to approach the second abutment member along the first direction, so that the clamping device can limit the movement of the battery cell in the first direction during welding.
[0031] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0033] Figure 1 A schematic diagram of the structure of a clamping device provided in some embodiments of the present application;
[0034] Figure 2 A schematic diagram of the structure of the clamping device provided in some embodiments of the present application from another perspective;
[0035] Figure 3 A three-dimensional exploded view of an abutment mechanism provided in some embodiments of the present application;
[0036] Figure 4 A schematic diagram of the structure of a second abutment member provided in some embodiments of the present application;
[0037] Figure 5 for Figure 2 A magnified view of middle;
[0038] Figure 6 A schematic structural diagram of a first abutment member provided in some embodiments of the present application;
[0039] Figure 7 for Figure 2 Enlarged view of B.
[0040] Icon: 100-Clamping device;
[0041] 10-first abutment member; 11-first body; 111-first side surface; 12-first convex portion; 121-first through hole; 13-second convex portion;
[0042] 20-abutment mechanism; 21-second abutment member; 211-second body; 211A-second side; 212-rotating shaft; 213-limiting member; 213A-first part; 213B-second part; 213C-second guide rod; 213D-second elastic member;
[0043] 22-base; 221-first base; 222-adjusting assembly; 222A-first guide rod; 222B-first elastic member; 223-second base; 223A-mounting hole; 223B-first guide hole;
[0044] 30-battery monomer; 31-sealing nail;
[0045] X-first direction; Y-second direction; Z-rotation axis direction; P-rotation axis. DETAILED DESCRIPTION
[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0047] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.
[0048] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.
[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0050] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.
[0051] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.
[0052] The term "plurality" used in the present application refers to two or more (including two).
[0053] A clamping device is a device used to limit and clamp a workpiece, usually used in machining, assembly, welding and other processes. The function of the clamping device is to limit the workpiece or tool to maintain a stable position and posture during the machining process to limit the machining accuracy and safety.
[0054] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.
[0055] Battery cells include, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.
[0056] A battery cell may include a case and an electrode assembly.
[0057] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to reduce the risk of short circuit between the positive and negative electrodes, while allowing active ions to pass through.
[0058] The case is a component for accommodating an electrode assembly, an electrolyte, and other components.
[0059] The electrolyte conducts ions between the positive and negative electrodes and can be in liquid or gel form.
[0060] The shell is generally provided with an injection hole for injecting electrolyte into the shell. In the prior art, a sealing pin is generally inserted into the injection hole and the sealing pin and the shell are welded to seal the injection hole.
[0061] Battery cell shell welding is an essential process in the battery production process, and is mainly used in the production of battery cells. Shell welding refers to filling the gaps between the various components of the battery cell shell (such as the gap between the sealing pin and the injection hole) by welding. In the prior art, the shell is generally welded by a robot holding the welding gun head along a set motion trajectory.
[0062] When welding the shell, the movement trajectory of the welding gun head must be consistent with the extension direction of the gaps between the various parts of the shell. In the prior art, when the battery cells of different welding batches are restricted in movement by the clamping device, due to certain differences in the shells of the battery cells, there are certain differences in the angles of inclination of the side of the shell where the gap to be welded is located relative to the first abutment, which in turn makes the angle of inclination of the shell gap to be welded relative to the first abutment different, thereby increasing the risk that the movement trajectory of the welding gun head is not consistent with the extension direction of the gap to be welded, thereby reducing the yield rate of the weld.
[0063] In view of this, in order to reduce the risk that the movement trajectory of the welding gun head is not consistent with the extension direction of the gap to be welded, the yield rate of the weld is increased. The present application provides a clamping device that limits the movement of the battery cell in the first direction through a first abutment and a second abutment, and the second abutment can be rotatably arranged on the base, and the rotation axis of the second abutment is perpendicular to the first direction. Therefore, when the first abutment and the second abutment are respectively abutted with the two opposite surfaces of the battery cell in the first direction to limit the movement of the battery cell in the first direction, the second abutment can be rotated relative to the base so that the side of the battery cell facing the first abutment can be fitted with the first abutment. Then, the side of the battery cell facing the first abutment of different welding batches is fitted with the side of the first abutment used to abut the battery cell, so that the extension direction of the gap to be welded by the battery cell of different welding batches is consistent with the movement trajectory of the welding gun head, thereby reducing the risk that the movement trajectory of the welding gun head deviates from the extension direction of the welded gap, and improving the yield rate of the weld during welding.
[0064] The specific structure of the clamping device is described in detail below with reference to the accompanying drawings.
[0065] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a clamping device 100 provided in some embodiments of the present application. Figure 2A schematic diagram of the structure of the clamping device 100 provided in some embodiments of the present application from another perspective. The embodiment of the present application provides a clamping device 100 for clamping a battery cell 30, and the clamping device 100 includes a first abutment member 10 and an abutment mechanism 20. The abutment mechanism 20 includes a base 22 and a second abutment member 21, and the second abutment member 21 is rotatably disposed on the base 22. The first abutment member 10 approaches the second abutment member 21 along the first direction X, so as to abut with the second abutment member 21 respectively on two opposite surfaces of the battery cell 30 in the first direction X, and the rotation axis P of the second abutment member 21 is perpendicular to the first direction X.
[0066] The first abutting member 10 is a component of the clamping device 100 for abutting against the housing of the battery cell 30 .
[0067] It can be understood that the side of the shell facing the first abutment 10 has a gap that needs to be welded, so that when the side of the shell facing the first abutment 10 of multiple welding batches of battery cells 30 is in contact with the first abutment 10, the extension direction of the gap that needs to be welded in the batteries of multiple welding batches is consistent with the movement trajectory of the welding gun head.
[0068] In some embodiments, the first abutting member 10 may be a plate-like structure, the thickness direction of the plate-like structure is parallel to the first direction X, and the side of the plate-like structure facing the battery cell 30 is used to abut against the battery cell 30 .
[0069] The abutment mechanism 20 is a mechanism in the clamping device 100 for placing the battery cell 30 .
[0070] The base 22 is a component in the abutment mechanism 20 for rotatably disposing the second abutment member 21 .
[0071] The second abutting member 21 is a component of the abutting mechanism 20 for placing the battery cell 30 .
[0072] Exemplarily, the second abutting member 21 and the first abutting member 10 abut against two opposite surfaces of the battery cell 30 in the first direction X, respectively, so as to limit the movement of the battery cell 30 in the first direction X.
[0073] “The second abutting member 21 is rotatably disposed on the base 22 ” can be understood as the second abutting member 21 is installed on the base 22 , and can rotate relative to the base 22 along the rotation axis P of the second abutting member 21 in the W1 direction or the W2 direction.
[0074] In the embodiment where the first abutment 10 is plate-shaped, when the first abutment 10 and the second abutment 21 respectively abut against two opposite surfaces of the battery cell 30 in the first direction X to limit the movement of the battery cell 30 in the first direction X, the second abutment 21 can rotate relative to the rotation axis P along the W1 direction or the W2 direction, so that the side of the battery cell 30 facing the first abutment 10 is in contact with the side of the first abutment 10 for abutting against the battery cell 30. On the one hand, the risk of the gap extension direction of the battery cells 30 to be welded in different welding batches being inconsistent with the movement trajectory of the welding gun head due to the size difference of the shells of the battery cells 30 in different welding batches is reduced. The risk of poor fit between the battery cell 30 and the second abutment 21 and the first abutment 10 due to the second abutment 21 not being parallel to the first abutment 10 is also reduced.
[0075] The first direction X is the movement direction of the first abutment member 10, and the first direction X can be parallel to the height direction of the battery cell 30, and the second direction Y can be parallel to the length direction of the battery cell 30. The first direction X, the second direction Y and the rotation axis direction Z of the second abutment member 21 are perpendicular to each other.
[0076] In the above scheme, the second abutment 21 is rotatably arranged on the base 22, and the rotation axis P of the second abutment 21 is perpendicular to the first direction X, so that when the first abutment 10 and the second abutment 21 respectively abut against two opposite surfaces of the battery cell 30 in the first direction X to limit the movement of the battery cell 30 in the first direction X, the second abutment 21 can rotate relative to the base 22, so that the side of the battery cell 30 facing the first abutment 10 can be abutted with the first abutment 10. In this way, the side of the battery cell 30 facing the first abutment 10 of different welding batches is abutted with the first abutment 10, and the extending direction of the gap to be welded of the battery cells 30 of different welding batches is consistent with the movement trajectory of the welding gun head, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the weld quality rate during welding.
[0077] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, there are multiple abutment mechanisms 20, and the multiple abutment mechanisms 20 are arranged along the extension direction of the first abutment member 10, and the extension direction of the first abutment member 10 is perpendicular to the first direction X.
[0078] Exemplarily, the first abutting member 10 may be a long plate-shaped structure extending in a single direction, or the first abutting member 10 may also be a ring-shaped structure.
[0079] “The extension direction of the first abutment member 10 is perpendicular to the first direction X”, in the embodiment where the first abutment member 10 is a long plate-like structure extending in a single direction, it can be understood that the length direction of the long plate-like structure is perpendicular to the first direction X. Exemplarily, the length direction of the long plate-like structure can be parallel to the second direction Y.
[0080] In the embodiment where the first abutment member 10 is an annular structure, “the extension direction of the first abutment member 10 is perpendicular to the first direction X” can be understood as the tangent line of any point of the annular structure is perpendicular to the first direction X. Exemplarily, the surrounding axis of the annular structure is parallel to the first direction X.
[0081] In the above scheme, the abutment mechanism 20 is arranged in a plurality along the extension direction of the first abutment member 10. On the one hand, the clamping device 100 can clamp a plurality of battery cells 30 at the same time, reducing the clamping time required for clamping a plurality of battery cells 30, thereby improving the welding efficiency; on the other hand, the battery cells 30 in the plurality of abutment mechanisms 20 are all based on the same first abutment member 10, thereby reducing the risk of the gaps to be welded of the plurality of battery cells 30 being inconsistent with the movement trajectory of the welding gun head due to the size difference of the plurality of second abutment members 21, thereby improving the weld quality rate during the welding process.
[0082] Please refer to Figure 1 and Figure 2 , and please refer to Figure 3 and Figure 4 , Figure 3 A three-dimensional exploded view of the abutment mechanism 20 provided in some embodiments of the present application. Figure 4 A schematic diagram of the structure of the second abutment member 21 provided in some embodiments of the present application. According to some embodiments of the present application, the second abutment member 21 includes a second body 211 and a rotating shaft 212. The second body 211 has a second side surface 211A facing the first abutment member 10, and the second side surface 211A is used to abut against the battery cell 30. The rotating shaft 212 is disposed on a side of the second body 211 away from the second side surface 211A, and is rotatably disposed on the base 22.
[0083] The second body 211 is a portion of the second abutting member 21 for abutting against the battery cell 30 .
[0084] The second side surface 211A is a surface of the second body 211 for abutting against the battery cell 30 . Exemplarily, the second side surface 211A is a surface of the second body 211 facing the second abutting member 21 along the first direction X, and the second side surface 211A is perpendicular to the first direction X.
[0085] It can be understood that the axis of the rotating shaft 212 coincides with the rotation axis P of the second abutting member 21 .
[0086] In the above technical solution, the rotating shaft 212 rotates to drive the second side surface 211A to rotate around the rotating axis P in the W1 direction or the W2 direction, so that when the first abutment member 10 and the second abutment member 21 restrict the movement of the battery cell 30 in the first direction X, the side of the battery cell 30 facing the first abutment member 10 can be in contact with the first abutment member 10. As a result, the extending direction of the gap to be welded in the battery cell 30 is consistent with the movement trajectory of the welding gun head, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the yield rate of the weld during the welding process.
[0087] Please refer to Figure 2 , and please refer to Figure 4 and Figure 5 , Figure 5 for Figure 2 According to some embodiments of the present application, the abutting mechanism 20 further includes a pair of limiting members 213. The pair of limiting members 213 are arranged at intervals along the second direction Y. When the second side surface 211A abuts against the battery cell 30, along the second direction Y, the battery cell 30 is located between the pair of limiting members 213 and abuts against at least one of the pair of limiting members 213.
[0088] The limiting member 213 is a component of the abutting mechanism 20 for abutting against the battery cell 30 to limit the movement of the battery cell 30 in the second direction Y relative to the abutting mechanism 20 .
[0089] Exemplarily, the pair of limiting members 213 are two respectively located at two ends of the second body 211 in the second direction Y, and both limiting members 213 extend in a direction close to the first abutment.
[0090] In some embodiments, one of the stoppers 213 may include a first portion 213A, a second portion 213B, a second guide rod 213C, and a second elastic member 213D. The first portion 213A is disposed on the second side surface 211A and is located at one end of the second body 211 in the second direction Y. A second guide hole (not shown in the figure) is provided on the first portion 213A. The second guide rod 213C is slidably inserted into the second guide hole (not shown in the figure). The second guide rod 213C extends along the second direction Y. One end of the second guide rod 213C is connected to the second portion 213B. The second elastic member 213D is sleeved on the second guide rod 213C. The two ends of the second elastic member 213D are respectively connected to the first portion 213A and the second portion 213B. Along the second direction Y, the second portion 213B is located between the first portion 213A and the other stopper 213. In this way, the second part 213B can be driven by the second elastic member 213D to move toward the battery cell 30, so that the second part 213B and another limiting member 213 respectively abut against both sides of the battery cell 30 in the second direction Y to limit the movement of the battery cell 30 in the second direction Y.
[0091] In the above technical solution, when the second side surface 211A abuts against the battery cell 30, the battery cell 30 is located between the pair of limiters 213 along the second direction Y, and abuts against at least one of the pair of limiters 213. Therefore, when the first abutting member 10 and the second abutting member 21 limit the movement of the battery cell 30 in the first direction X, the movement of the battery cell 30 in the second direction Y is limited, thereby reducing the risk of missed welding and repeated welding when welding the weld extending along the second direction Y on the shell, and improving the weld yield rate during the welding process.
[0092] Please refer to Figure 2 , and please refer to Figure 3 and Figure 4 According to some embodiments of the present application, the base 22 includes a first base 221, an adjustment assembly 222, and a second base 223 arranged in sequence along the first direction X, and the rotating shaft 212 is rotatably disposed on the second base 223. Along the first direction X, the second body 211 is located between the second base 223 and the first abutment member 10. The adjustment assembly 222 is configured to drive the second base 223 to drive the second abutment member 21 to move toward the first abutment member 10.
[0093] The first base 221 is a portion of the base 22 for disposing the adjustment component 222 .
[0094] The adjusting component 222 is a component that drives the second base 223 to move toward the direction close to the first abutting member 10. Exemplarily, the adjusting component 222 may be an electrically controlled component.
[0095] The second base 223 is a portion of the base 22 for setting the rotation axis.
[0096] Optionally, the second base body 223 may be a hollow structure to reduce the weight of the second base body 223 , thereby facilitating the adjustment component 222 to drive the second base body 223 to move.
[0097] In some embodiments, the second base 223 can serve as a rotation limiter for the second body 211. For example, the second body 211 rotates along the W1 direction or the W2 direction so that the two ends of the second body 211 relatively arranged along the second direction Y respectively abut against the second base 223 to limit the rotation range of the second body 211 along the W1 direction or the W2 direction.
[0098] It can be understood that in the embodiment where there are multiple abutting mechanisms 20 and the multiple abutting mechanisms 20 are arranged along the extension direction of the first abutting member 10, the adjusting assembly 222 can drive the second base 223 to drive the second abutting member 21 to move toward the first abutting member 10, thereby driving the battery cell 30 to abut against the first abutting member 10, thereby reducing the risk of inconsistent relative positions of gaps to be welded in multiple battery cells 30 in the first direction X due to the size difference of the second abutting members 21 of different abutting mechanisms 20, thereby improving the yield rate of the weld during the welding process.
[0099] In some embodiments, the second base 223 has a mounting hole 223A that passes through the second base 223 along the rotation axis direction Z, and one end of the rotating shaft 212 is rotatably inserted in the mounting hole 223A. The rotating shaft 212 rotates relative to the mounting hole 223A to drive the second body 211 to rotate relative to the second base 223.
[0100] In the above technical solution, the adjustment component 222 can drive the second base 223 to drive the second abutment member 21 to move toward the first abutment member 10, thereby driving the battery cell 30 to abut against the first abutment member 10, thereby reducing the risk of the relative positions of the gaps to be welded in the first direction X of the battery cells 30 in different welding batches being inconsistent due to the different sizes of the battery cells 30 in different welding batches in the first direction X, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the yield rate of the weld during the welding process.
[0101] Please refer to Figure 2 , and please refer to Figure 3 and Figure 4 According to some embodiments of the present application, the second bases 223 are two spaced apart from each other along the rotation axis direction Z of the second abutting member 21 , and both ends of the rotating shaft 212 are rotatably disposed on the two second bases 223 .
[0102] Optionally, the rotating shaft 212 can be an integrally formed one, connected to the side of the second body 211 away from the second side surface 211A, and the two ends of the rotating shaft 212 are respectively rotatably set on the two second bases 223; or, the rotating shaft 212 can also be two coaxially set on the side of the second body 211 away from the second side surface 211A, and the two rotating shafts 212 are respectively rotatably set on the two second bases 223.
[0103] In the embodiment where the second base 223 is provided with a mounting hole 223A, both second bases 223 are provided with a mounting hole 223A, and both ends of the rotating shaft 212 are rotatably inserted into the mounting holes 223A of the two second bases 223 .
[0104] In the above technical solution, the second base 223 can provide support force to the rotating shaft 212. The two ends of the rotating shaft 212 are rotatably disposed on the two second bases 223, respectively, and the two second bases 223 can evenly support the rotating shaft 212, so that the rotating shaft 212 can be fully supported, so that the rotation of the rotating shaft 212 is more stable, and the service life of the second abutting member 21 is improved.
[0105] Please refer to Figure 2 , and please refer to Figure 3 and Figure 4 According to some embodiments of the present application, the adjustment assembly 222 includes a first elastic member 222B. Along the first direction X, the first elastic member 222B is disposed between the second base 223 and the first base 221. The first elastic member 222B is used to provide elastic force to the second base 223 to drive the second base 223 to move toward the first abutting member 10.
[0106] The first elastic member 222B may be a component with an elastic structure, and illustratively, the first elastic member 222B may be a spring, a coil spring, a rubber, etc. The first elastic member 222B is a component in the adjustment assembly 222 for providing elastic force, and the elastic force of the first elastic member 222B can drive the second base 223 to move toward the first abutting member 10, so that the first abutting member 10 and the second abutting member 21 abut against the battery cell 30 respectively.
[0107] In the above technical solution, the second base 223 is driven to move toward the first abutment member 10 by the first elastic member 222B, and the second abutment member 21 can be driven close to the first abutment member 10 by the elastic force. When the battery cell 30 abuts against both the first abutment member 10 and the second abutment member 21, and the first abutment member 10 approaches the second abutment member 21 along the first direction X, the risk of damage to the battery cell 30 due to excessive pressure can be reduced through the elastic deformation of the first elastic member.
[0108] Please refer to Figure 2 , and please refer to Figure 3 and Figure 4 According to some embodiments of the present application, a first guide hole 223B is formed on the second base 223. The adjustment assembly 222 further includes a first guide rod 222A extending along the first direction X. The first guide rod 222A is slidably disposed in the first guide hole 223B, and one end of the first guide rod 222A is connected to the first base 221.
[0109] The first guide rod 222A is a component in the adjustment assembly 222 for guiding the second base body 223 to move along the first direction X.
[0110] Exemplarily, the cross-section of the first guide rod 222A may be circular, elliptical, square, etc. It can be understood that the cross-section of the first guide hole 223B should correspond to the cross-section of the first guide rod 222A.
[0111] Exemplarily, one end of the first guide rod 222A is arranged on the side of the first base 221 facing the second base 223, and the side of the second base 223 facing the first base 221 has a first guide hole 223B corresponding to the first guide rod 222A, and the other end of the first guide rod 222A can be slidably penetrated into the first guide hole 223B.
[0112] In an embodiment where the second base 223 is a hollow structure, the first guide hole 223B is connected to the interior of the second base 223, and the radial dimension of the portion of the first guide rod 222A located in the second base 223 is larger than the radial dimension of the first guide hole 223B to reduce the risk of the first guide rod 222A slipping out of the first guide hole 223B.
[0113] In some embodiments, a plurality of first guide rods 222A may be arranged along the second direction Y at intervals.
[0114] Exemplarily, there are two first guide rods 222A arranged at intervals along the second direction Y, and the second base 223 is provided with first guide holes 223B corresponding to the two first guide rods 222A.
[0115] In an embodiment in which the second base 223 is two spaced apart along the rotation axis direction Z, the first guide rods 222A may be two rows arranged along the rotation axis direction Z, each row of first guide rods 222A corresponds to each second base 223, and each row of first guide rods 222A is two first guide rods 222A spaced apart along the second direction Y.
[0116] In the above technical solution, the first guide rod 222A is connected to the first base 221 and is slidably disposed on the second base 223 so that when the first elastic member 222B drives the second base 223 to move, the first guide rod 222A can guide the second base 223 to move along the first direction X.
[0117] Please refer to Figure 2 , and please refer to Figure 3 and Figure 4 According to some embodiments of the present application, the first elastic member 222B is sleeved on the first guide rod 222A, and two ends of the first elastic member 222B are respectively in contact with the first base 221 and the second base 223 .
[0118] In some embodiments, the first elastic member 222B is a spring, and the cross-section of the first guide rod 222A is circular to reduce the wear of the first elastic member 222B by the first guide rod 222A when the first elastic member 222B moves relative to the first guide rod 222A.
[0119] In the above technical solution, the first elastic member 222B is sleeved on the first guide rod 222A, so that the first elastic member 222B can drive the second base 223 to move relative to the first base 221 along the first direction X, which has a simple structure and is easy to assemble.
[0120] Please refer to Figure 2 , and please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic structural diagram of a first abutment member 10 provided in some embodiments of the present application. Figure 7 for Figure 2 1 is an enlarged view of B in FIG. According to some embodiments of the present application, the first abutment member 10 includes a first body 11 and a first protrusion 12. Along the first direction X, the first body 11 has a first side surface 111 facing the abutment mechanism 20. The first protrusion 12 protrudes from the first side surface 111, and the first protrusion 12 is used to press the edge of the sealing nail 31 against the battery cell 30. The first abutment member 10 has a first through hole 121 that runs through the first body 11 and the first protrusion 12, and the first through hole 121 is used for the welding gun head to pass through.
[0121] The first body 11 is a portion of the first abutting member 10 used for driving the first protrusion 12 to move. Exemplarily, the first body 11 can be driven to move by an electrically controlled mechanism.
[0122] The first protrusion 12 is a portion of the first abutting member 10 for abutting against the sealing pin 31 .
[0123] The first protrusion 12 can be fixed to the first body 11 by integral molding, or the first protrusion 12 can be connected to the first body 11 by welding.
[0124] The sealing nail 31 includes a nail head and a nail body arranged along the first direction X, and the radial dimension of the nail head is greater than the radial dimension of the nail body.
[0125] “The first protrusion 12 is used to press the edge of the sealing nail 31 against the battery cell 30 ” can be understood as the first protrusion 12 is used to press the nail head against the outside of the shell of the battery cell 30 .
[0126] Exemplarily, the first body 11 approaches the abutment mechanism 20 along the first direction X to drive the first protrusion 12 to insert the nail of the sealing nail 31 into the injection hole and make the nail head abut against the outer surface of the shell to facilitate welding of the gap between the edge of the nail head and the outer surface of the shell.
[0127] The welding may be performed by melting the welding material to fill the gap between the edge of the nail head and the outer surface of the shell; or the nail head may be melted to make the nail head adhere to the outer surface of the shell.
[0128] The welding method can be laser welding or brazing.
[0129] In the embodiment where there are multiple abutting mechanisms 20 , there are multiple first protrusions 12 corresponding one-to-one to the abutting mechanisms 20 .
[0130] In the above technical solution, the first protrusion 12 protrudes from the first side surface 111 and is used to press the edge of the sealing pin 31 against the battery cell 30. This limits the relative movement between the sealing pin 31 and the battery cell 30 during welding, thereby reducing the risk of the welding gun head deviating from the gap where the sealing pin 31 needs to be welded.
[0131] Please refer to Figure 2 , and please refer to Figure 6 and Figure 7 According to some embodiments of the present application, the first abutment member 10 further includes a second protrusion 13 , which protrudes from the first side surface 111 , and is used to abut against a side of the battery cell 30 facing the first side surface 111 .
[0132] The second protrusion 13 is a portion of the first abutting member 10 that is used to abut against a non-sealing pin 31 area of the battery cell 30 .
[0133] The second protrusion 13 can be fixed to the first body 11 by integral molding, or the second protrusion 13 can be connected to the first body 11 by welding.
[0134] It can be understood that the cross-sectional area of the second protrusion 13 along the first direction X is smaller than the area of the first side surface 111 , thereby reducing the area that needs to be finely processed, thereby facilitating the processing of the first abutting member 10 .
[0135] It is understandable that the dimension of the second protrusion 13 in the first direction X should be greater than the dimension of the first protrusion 12 in the first direction X. This allows the second protrusion 13 to abut against the outer surface of the housing of the battery cell 30 when the first protrusion 12 abuts against the sealing nail 31 .
[0136] In some embodiments, the second protrusions 13 may be multiple and arranged around the first protrusion 12 to reduce the risk of the housing of the battery cell 30 rotating relative to the first protrusion 12 when restricting the relative movement of the battery cell 30 in the first direction X.
[0137] In the above technical solution, the second protrusion 13 protrudes from the first side surface 111 and is used to abut against the side of the battery cell 30 facing the first side surface 111, so that the second protrusion 13 fits against the side of the battery cell 30 facing the first abutment, thereby reducing the risk of the welding gun head deviating from the welding gap.
[0138] Please refer to Figure 2 , and please refer to Figure 6 and Figure 7 According to some embodiments of the present application, there are multiple second protrusions 13, and the multiple second protrusions 13 are multiple rows of second protrusions 13 arranged at intervals along the second direction Y, and each row of second protrusions 13 are multiple second protrusions 13 arranged at intervals along the rotation axis direction Z of the second abutment member 21.
[0139] In some embodiments, there are four second protrusions 13, and the four second protrusions 13 are arranged in two rows at intervals along the second direction Y, and each row of second protrusions 13 is arranged in two rows at intervals along the rotation axis direction Z. Along the second direction Y, the first protrusion 12 is between the two rows of second protrusions 13, and on a plane perpendicular to the second direction Y, the orthographic projection of the first protrusion 12 is located between the orthographic projections of the two second protrusions 13 in each row of second protrusions 13. The four second protrusions 13 are located on the circumferential side of the first protrusion 12 to reduce the risk of the housing of the battery cell 30 rotating relative to the first protrusion 12 when the relative movement of the battery cell 30 in the first direction X is restricted.
[0140] In the embodiment where the first side surface 111 is a rectangle, the four second protrusions 13 are respectively close to four corners of the first side surface 111 .
[0141] In the above technical solution, there are multiple second protrusions 13, and the multiple second protrusions 13 are multiple rows of second protrusions 13 arranged at intervals along the second direction Y, and each row of second protrusions 13 is multiple second protrusions 13 arranged at intervals along the rotation axis direction Z of the second abutment 21, so that the pressure of the first abutment 10 on the side of the battery cell 30 facing the first side surface 111 is more evenly distributed on the side of the battery cell 30 facing the first side surface 111, which is beneficial to reducing the risk of the welding gun head deviating from the welding gap.
[0142] According to some embodiments of the present application, the clamping device 100 further includes a driving component (not shown in the figure), and the driving component (not shown in the figure) is configured to drive the first abutting member 10 to reciprocate along the first direction X.
[0143] The driving component is a component in the clamping device 100 used to drive the first abutting member 10 to reciprocate along the first direction X.
[0144] Optionally, the driving component (not shown in the figure) can be a hydraulic cylinder, a pneumatic cylinder, a motor, etc.
[0145] In the above technical solution, the first abutting member 10 is driven by the driving component to approach the second abutting member 21 along the first direction X, so that the clamping device 100 can limit the movement of the battery cell 30 in the first direction X during welding.
[0146] According to some embodiments of the present application, a clamping device 100 is provided. Figure 1 - Figure 7 .
[0147] The clamping device 100 is used to clamp the battery cell 30 , and the clamping device 100 includes a first abutting member 10 and an abutting mechanism 20 .
[0148] The second abutting member 21 includes a second body 211 and a rotation shaft 212. The second body 211 has a second side surface 211A facing the first abutting member 10, and the second side surface 211A is used to abut against the battery cell 30. The rotation shaft 212 is disposed on a side of the second body 211 away from the second side surface 211A.
[0149] The abutting mechanism 20 includes a base 22 and a second abutting member 21 .
[0150] The base 22 includes a first base 221, an adjustment assembly 222 and a second base 223 arranged in sequence along the first direction X. The second bases 223 are two spaced apart along the rotation axis direction Z of the second abutment member 21, and both ends of the rotating shaft 212 are rotatably disposed on the two second bases 223 respectively.
[0151] Along the first direction X, the second body 211 is located between the second base 223 and the first abutting member 10 .
[0152] The adjustment assembly 222 includes a first guide rod 222A and a first elastic member 222B. The first guide rod 222A extends along the first direction X, and the first guide rod 222A is slidably arranged in the first guide hole 223B, and one end of the first guide rod 222A is connected to the first base 221. The first elastic member 222B is sleeved on the first guide rod 222A, and the two ends of the first elastic member 222B are respectively in contact with the first base 221 and the second base 223.
[0153] The first guide rods 222A are arranged in two rows along the rotation axis direction Z, each row of first guide rods 222A corresponds to each second base body 223 , and each row of first guide rods 222A is arranged in two rows along the second direction Y at intervals.
[0154] The abutting mechanism 20 further includes a pair of stoppers 213 . The pair of stoppers 213 are arranged at intervals along the second direction Y. When the second side surface 211A abuts against the battery cell 30 , along the second direction Y, the battery cell 30 is located between the pair of stoppers 213 and abuts against at least one of the pair of stoppers 213 .
[0155] The first abutting member 10 includes a first body 11 , a first protrusion 12 and a second protrusion 13 .
[0156] Along the first direction X, the first body 11 has a first side surface 111 facing the abutting mechanism 20 .
[0157] The first protrusion 12 protrudes from the first side surface 111 and is used to press the edge of the sealing nail 31 against the battery cell 30. The first abutment member 10 has a first through hole 121 penetrating the first body 11 and the first protrusion 12 and is used for a welding gun head to pass through.
[0158] The second protrusion 13 protrudes from the first side surface 111 , and the second protrusion 13 is used to abut against a side of the battery cell 30 facing the first side surface 111 .
[0159] There are four second convex portions 13, and the four second convex portions 13 are arranged in two rows at intervals along the second direction Y, and each row of second convex portions 13 is arranged in two rows at intervals along the rotation axis direction Z. Along the second direction Y, the first convex portion 12 is between the two rows of second convex portions 13, and on a plane perpendicular to the second direction Y, the orthographic projection of the first convex portion 12 is located between the orthographic projections of the two second convex portions 13 in each row of second convex portions 13.
[0160] The clamping device 100 further includes a driving component (not shown in the figure), which is configured to drive the first abutting member 10 to reciprocate along the first direction X.
[0161] The second abutment member 21 is rotatably disposed on the base 22 , and the first abutment member 10 approaches the second abutment member 21 along the first direction X so as to abut with two opposite surfaces of the battery cell 30 in the first direction X respectively with the second abutment member 21 . The rotation axis P of the second abutment member 21 is perpendicular to the first direction X.
[0162] In the above scheme, the second body 211 is rotatably disposed on the second base 223 through the rotating shaft 212, and the rotating axis P of the rotating shaft 212 is perpendicular to the first direction X. Therefore, the first abutting member 10 and the second abutting member 21 respectively abut the two opposite surfaces of the battery cell 30 in the first direction X to limit the movement of the battery cell 30 in the first direction X, and when the first convex portion 12 presses the sealing nail 31, the second body 211 can rotate relative to the second base 223 along the W1 direction or the W2 direction. So that the side of the battery cell 30 facing the first abutting member 10 can fully abut against the multiple second convex portions 13, so that the side of the battery cell 30 facing the first abutting member 10 of different welding batches abuts against the multiple second convex portions 13, and then the extending direction of the gap required to be welded of the battery cells 30 of different welding batches is consistent with the movement trajectory of the welding gun head, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the weld quality rate during welding.
[0163] At the same time, the first elastic member 222B and the first guide rod 222A cooperate to drive the second base 223 to drive the second abutment member 21 to move toward the first abutment member 10, thereby driving the battery cell 30 to abut against the first abutment member 10, thereby reducing the risk of inconsistent relative positions of gaps that need to be welded in the first direction X of the battery cells 30 in different welding batches due to the different sizes of the battery cells 30 in the first direction X, thereby reducing the risk of the welding gun head deviating from the welding gap and improving the yield rate of the weld during the welding process.
[0164] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.
[0165] The above embodiments are only used to illustrate the technical solutions of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A clamping device for clamping a battery cell, characterized in that: include: a first abutment member; An abutment mechanism includes a base and a second abutment member, the second abutment member is rotatably arranged on the base, the first abutment member approaches the second abutment member along a first direction so as to abut with the second abutment member respectively on two opposite surfaces of the battery cell in the first direction, and the rotation axis of the second abutment member is perpendicular to the first direction.
2. The clamping device according to claim 1, characterized in that There are multiple abutment mechanisms, and the multiple abutment mechanisms are arranged along the extension direction of the first abutment member, and the extension direction of the first abutment member is perpendicular to the first direction.
3. The clamping device according to claim 1, characterized in that The second abutting member comprises a second body and a rotating shaft, the second body has a second side surface facing the first abutting member, and the second side surface is used to abut against the battery cell; The rotating shaft is arranged on a side of the second body away from the second side surface, and is rotatably arranged on the base.
4. The clamping device according to claim 3, characterized in that The abutment mechanism further includes a pair of limiting members; Along the second direction, the pair of limiting members are arranged at intervals; When the second side surface abuts the battery cell, along the second direction, the battery cell is located between the pair of limit members and abuts against at least one of the pair of limit members, and the first direction, the second direction and the rotation axis direction of the second abutting member are perpendicular to each other.
5. The clamping device according to claim 3, characterized in that The base comprises a first base, an adjustment assembly and a second base arranged in sequence along the first direction, and the rotating shaft is rotatably disposed on the second base; Along the first direction, the second body is located between the second base and the first abutment member; The adjustment assembly is configured to drive the second base to drive the second abutment member to move toward the first abutment member.
6. The clamping device according to claim 5, characterized in that The second base bodies are two arranged at intervals along the rotation axis direction of the second abutting member, and the two ends of the rotating shaft are rotatably arranged on the two second base bodies respectively.
7. The clamping device according to claim 5, characterized in that The adjustment assembly includes a first elastic member; Along the first direction, the first elastic member is disposed between the second substrate and the first substrate, and the first elastic member is used to provide elastic force to the second substrate to drive the second substrate to move toward the first abutting member.
8. The clamping device according to claim 7, characterized in that The second substrate is provided with a first guide hole; The adjustment assembly further includes a first guide rod extending along the first direction. The first guide rod is slidably disposed in the first guide hole. One end of the first guide rod is connected to the first base.
9. The clamping device according to claim 8, characterized in that The first elastic member is sleeved on the first guide rod, and two ends of the first elastic member are respectively in contact with the first base and the second base.
10. The clamping device according to claim 1, characterized in that The first abutment member comprises: A first body, wherein along the first direction, the first body has a first side surface facing the abutment mechanism; a first convex portion protruding from the first side surface, wherein the first convex portion is used to press the edge of the sealing nail against the battery cell; The first abutment member has a first through hole penetrating the first body and the first protrusion, and the first through hole is used for a welding gun head to pass through.
11. The clamping device according to claim 10, characterized in that The first abutting member further includes a second protrusion, the second protrusion protrudes from the first side surface, and the second protrusion is used to abut against a side of the battery cell facing the first side surface.
12. The clamping device according to claim 11, characterized in that There are multiple second protrusions, and the multiple second protrusions are multiple rows of second protrusions arranged at intervals along the second direction. Each row of second protrusions is multiple second protrusions arranged at intervals along the direction of the rotation axis of the second abutment member. The first direction, the second direction and the direction of the rotation axis of the second abutment member are perpendicular to each other.
13. The clamping device according to any one of claims 1 to 12, characterized in that: The clamping device further includes a driving component configured to drive the first abutment member to reciprocate along the first direction.