Welding device and battery production line

Abstract

The utility model discloses a welding device and a battery production line, the welding device comprises a base, a locking block, a welding seat and a first connecting piece, the base is provided with a bearing surface, a groove is formed in one side, deviating from the bearing surface, of the base, the locking block is arranged in the groove, the welding seat is arranged on the bearing surface, the first connecting piece penetrates through the welding seat, and the base is connected with the locking block. According to the scheme provided by the invention, the first connecting piece penetrates through the welding seat and the base and then is fastened with the locking block, so that the locking block can be stably fixed on the base. When the whole welding device is used, the base cannot be damaged by the first connecting piece, only the locking block needs to be replaced regularly, the welding seat can be stably fixed to the base all the time, and therefore the using reliability of the whole welding device is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a welding device and a battery production line. Background Art

[0002] During the processing and manufacturing of the battery cell tabs, the tab adapters of the battery cell need to be welded. The current method is to achieve the welding connection of the tab adapters through the cooperation between the welding head and the welding seat, and then through ultrasonic welding technology. The base is used to carry the welding seat and is fixed on the welding machine frame.

[0003] The base in the related art is easily damaged during use. Utility Model Content

[0004] In view of the above problems, the present application provides a welding device and a battery production line, which can solve the problem that the base is easily damaged during use.

[0005] In order to solve the above technical problems, in the first aspect, the present application proposes a welding device, comprising:

[0006] A base, wherein the base is provided with a bearing surface, and a groove is provided on a side of the base away from the bearing surface;

[0007] A locking block, the locking block being arranged in the groove;

[0008] A welding seat, the welding seat is arranged on the bearing surface;

[0009] A first connecting member is provided through the welding seat, the base and the locking block.

[0010] In the technical solution of the embodiment of the present application, the first connecting member passes through the welding seat and the base and is fastened to the locking block, so that the locking block can be stably fixed on the base. When the overall device is in use, the first connecting member will not cause damage to the base, and only the locking block needs to be replaced regularly, and the welding seat can always be stably fixed on the base, thereby improving the reliability of the overall welding device.

[0011] In some embodiments, the locking block is provided with anti-skid teeth at one end facing the groove, so that when the locking block is fastened in the groove, the anti-skid teeth abut against the inner top surface of the groove, which can increase the friction between the locking block and the inner top surface of the groove, and prevent the locking block from sliding relative to the groove.

[0012] In some embodiments, the locking block is located in the groove, and the side surface of the locking block abuts against the inner wall of the groove, so that the locking block can be stably located in the groove and a gap between the locking block and the groove is avoided.

[0013] In some embodiments, a limiting groove is provided on a side of the base facing the welding seat, and the bearing surface is located on the inner bottom surface of the limiting groove;

[0014] After the welding seat is at least partially located in the limiting groove, it abuts against the bearing surface. In this way, under the action of the limiting groove, the welding seat can be stably connected to the bearing surface to prevent the welding seat from moving relative to the base.

[0015] In some embodiments, the welding device includes at least two locking blocks, and at least two of the grooves are spaced apart on a side of the base away from the bearing surface, and the locking blocks cooperate with the grooves.

[0016] In some embodiments, the corners of the locking block on both sides along the first direction are chamfered, or,

[0017] Both sides of the locking block along the first direction are arc-shaped structures, wherein the first direction intersects with the direction in which the locking block is inserted into the groove.

[0018] In some embodiments, the welding device further comprises a second connecting member, and the second connecting member passes through the base along a side of the base away from the bearing surface and is connected to the welding base, so that the welding base and the base can be more stably connected together.

[0019] In some embodiments, the welding device further comprises a second connecting member, which passes through the locking block and the base in sequence along a side of the locking block away from the groove and then is connected to the welding seat. In this way, the locking block, the base and the welding seat can be stably connected together.

[0020] In some embodiments, the welding device further comprises a fastener, and when the locking block is located in the groove, the fastener passes through the base and is connected to the locking block, so that the base and the locking block can be connected together more stably.

[0021] In some embodiments, a limit block is provided on a side of the base away from the bearing surface, and the limit block is located in the groove;

[0022] The locking block is provided with a through slot, and when the locking block is located in the groove, the limiting block is located in the through slot. In this way, through the cooperation between the limiting block and the through slot, the locking block can be stably located in the groove, and the locking block can be prevented from shaking relative to the groove.

[0023] In some embodiments, the welding device further comprises a second connecting member, which passes through the limiting block and the base in sequence along the side of the locking block away from the groove and then is connected to the welding base, so that the base and the welding base can be stably connected together.

[0024] In some embodiments, the welding device further includes a fastener. When the locking block is located in the groove, the fastener passes through the base and abuts against the locking block. In this way, the locking block can be stably located in the groove.

[0025] In some embodiments, the locking block has an annular structure, the cross-section of the groove is a circular structure, and the locking block is in interference fit with the groove. In this way, the locking block can be stably located in the groove.

[0026] In a second aspect, the present application provides a battery production line, including the welding device according to any one of the embodiments of the present application.

[0027] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By reading the detailed description of the following embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0029] Figure 1 is a schematic structural diagram of the welding device provided by some embodiments of the present application;

[0030] Figure 2 is Figure 1 a partial schematic diagram in;

[0031] Figure 3 is Figure 2 a schematic diagram from another perspective;

[0032] Figure 4 is Figure 2 an exploded view of;

[0033] Figure 5 is Figure 4 a schematic diagram from another perspective;

[0034] Figure 6 is Figure 2 a schematic diagram of the base in;

[0035] Figure 7 is Figure 2 a schematic diagram of the locking block in;

[0036] Figure 8 is another schematic diagram of the locking block provided by some embodiments of the present application;

[0037] Figure 9 Another schematic diagram of a lock block provided for some embodiments of the present application;

[0038] Figure 10 Schematic diagram of the structure of another welding device provided for some embodiments of the present application;

[0039] Figure 11 For Figure 10 Schematic diagram from another perspective;

[0040] Figure 12 For Figure 11 Schematic diagram of the lock block in

[0041] Figure 13 Schematic diagram of the structure of another welding device provided for some embodiments of the present application;

[0042] Figure 14 For Figure 13 Schematic diagram of the lock block in

[0043] Figure 15 Schematic diagram of the structure of the welding device provided for some embodiments of the present application;

[0044] Figure 16 For Figure 15 Schematic diagram of the lock block in.

[0045] The reference numerals in the specific embodiments are as follows:

[0046] 10. Base; 101. First mounting hole; 102. Second mounting hole; 103. Limiting groove; 104. Groove; 105. Through hole; 106. Limiting block; 107. Bearing surface; 11. Lock block; 111. First connection hole; 112. Anti-slip teeth; 113. Third connection hole; 114. Fourth connection hole; 115. Through slot; 12. Welding base; 121. Welding post; 122. Second connection hole; 13. First connecting member; 14. Second connecting member; 15. Fastener; 16. Welding head; 17. Tab; 18. Adapter plate. Specific embodiments

[0047] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0049] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0050] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase does not necessarily refer to the same embodiment at every occurrence in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0051] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0052] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0053] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0054] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0055] During the processing and manufacturing of the battery cell tabs, the tab adapters of the battery cell need to be welded. The current method is to achieve the welding connection of the tab adapters through the cooperation between the welding head and the welding seat, and then through ultrasonic welding technology. The base is used to carry the welding seat and is fixed on the welding machine frame.

[0056] The welding seat of the ultrasonic welding machine grasps the material to be welded (adapter or pin) through the sharp teeth on its upper surface to ensure that the material to be welded does not slip relative to the movement direction of the welding head during welding, thereby maximizing the effective energy of welding.

[0057] The base is used to carry the welding seat and is fixed on the welding machine frame. In the related art, in order to prevent the welding seat screws from loosening under ultrasonic high-frequency vibration, they are usually locked with an over-standard torque, which will inevitably cause great damage to the internal threads of the base and cause deformation of the internal threads. Secondly, since the base has no life control, as time goes by, the greater the deformation of the internal threads on the base, the greater the force required to lock the welding seat screws, so the damage to the internal threads of the base continues to increase. The combined effect of the above two factors will eventually lead to insufficient thread bite force. During welding, the screws will move in the internal threads of the base, causing damage to the base and the welding seat cannot be stably connected to the base. Due to the loosening or movement of the welding seat screws, the cumulative relative distance between the welding head and the welding seat is reduced during ultrasonic welding, so that the welding power cannot be increased in a short time, and the temperature rise efficiency at the material welding point is low, and the temperature required for welding cannot be reached. In the fixed energy welding mode of the welding machine, when the energy is consumed, the material has not yet been fused, which is very likely to cause a cold weld.

[0058] Based on the above considerations, in order to solve the problem that the base is prone to damage during use, thereby causing cold welding, a welding device is designed, which includes a base, a locking block, a welding seat and a first connecting member, wherein the base is provided with a bearing surface, and a groove is provided on the side of the base away from the bearing surface; the locking block is arranged in the groove, the welding seat is arranged on the bearing surface, and the first connecting member passes through the welding seat, the base and the locking block in sequence to be connected.

[0059] In the technical solution of the embodiment of the present application, the first connecting member passes through the welding seat and the base and is fastened to the locking block, so that the locking block can be stably fixed on the base. When the overall device is in use, the first connecting member will not cause damage to the base, and only the locking block needs to be replaced regularly, and the welding seat can always be stably fixed on the base, thereby improving the reliability of the overall welding device.

[0060] According to some embodiments of the present application, Figure 2 for Figure 1 Part of the schematic diagram, Figure 3 for Figure 2 A schematic diagram from another perspective. Figure 4 for Figure 2 Exploded diagram of Figure 5 for Figure 4 Schematic diagram from another perspective. Figures 2 - 5 As shown, the present application provides a welding device, which includes a base 10, a locking block 11, a welding seat 12 and a first connecting member 13, wherein the base 10 is provided with a bearing surface 107, a groove 104 is provided on the side of the base 10 away from the bearing surface 107, the locking block 11 is arranged in the groove 104, the welding seat 12 is arranged on the bearing surface 107, and the first connecting member 13 passes through the welding seat 12 and the base 10 and is connected with the locking block 11 in sequence.

[0061] The locking block 11 in this embodiment may include two, three, etc., and the locking block 11 is provided with one, two, etc. first connection holes 111. Figure 6 As shown, a first mounting hole 101 is provided on the base 10 , and the first mounting hole 101 is connected to the groove 104 along the axial direction.

[0062] In this embodiment, the first connecting member 13 may be a bolt. In this case, the first connecting hole 111 is an internal threaded hole. The specific hole may be determined according to actual conditions, and this specification does not limit this.

[0063] refer to Figure 4 During installation, when the welding seat 12 is placed on the bearing surface 107, at the same time, refer to Figure 5 As shown, the locking block 11 is placed in the groove 104, and then the first connecting member 13 passes through the welding seat 12 and the base 10 from top to bottom and is connected to the locking block 11. At this time, the welding seat 12, the base 10, and the locking block 11 can be fixed together in sequence through the first connecting member 13. By tightening the first connecting member 13, the welding seat 12 can be stably fixed on the base 10.

[0064] When the present embodiment is in use, the welding seat 12 is fixed on the base 10 by the first connecting member 13. Figure 1 As shown, the adapter 18 is fixed by a device fixture, and the tabs 17 on the connecting cells are grasped by a robot and placed on the adapter 18 to form a stack.

[0065] When the overall device is operating, the welding head 16, welding base 12, and base 10 fixed on the frame are moved together with the frame to a position near the lower side of the adapter piece 18, so that the adapter piece 18 falls onto the welding posts 121 on the welding base 12. The welding head 16 descends under the pressure of the cylinder to the upper surface of the tab 17. At the same time, the transducer converts high-frequency electrical energy into mechanical longitudinal waves and acts on the tab 17 and the adapter piece 18 in the X direction. By friction between the tab 17 and the adapter piece 18, both are heated, and finally the welding is completed.

[0066] In the technical solution of the embodiment of the present application, the first connecting member 13 passes through the welding base 12 and the base 10 and is fastened to the locking block 11, so that the locking block 11 can be stably fixed on the base 10. When the overall device is in use, the first connecting member 13 will not cause damage to the base 10, and only the locking block 11 needs to be replaced regularly. The welding base 12 can always be stably fixed on the base 10, thereby improving the reliability of the overall welding device. Furthermore, during welding, the welding base 12 is prevented from shaking relative to the base 10, which may cause a virtual welding phenomenon.

[0067] According to some embodiments of the present application, as Figure 7 and combined with Figure 6 shown, an anti-slip tooth 112 is provided at one end of the locking block 11 facing the groove 104.

[0068] The anti-slip tooth 112 in this embodiment can be a strip structure, a cone structure, etc., and can be specifically determined according to the actual situation. The embodiments of this specification do not limit this.

[0069] In this embodiment, an anti-slip tooth 112 is provided at one end of the locking block 11 facing the groove 104. When the locking block 11 is fastened in the groove 104, the friction between the locking block 11 and the inner top surface of the groove 104 can be increased when the anti-slip tooth 112 abuts against the inner top surface of the groove 104, and the locking block 11 is prevented from sliding relative to the groove 104.

[0070] According to some embodiments of the present application, when the locking block 11 is located in the groove 104, the side surface of the locking block 11 abuts against the inner wall of the groove 104.

[0071] In this embodiment, when the locking block 11 is located in the groove 104, all side surfaces of the locking block 11 abut against the inner wall of the groove 104. In this way, the locking block 11 can be stably located in the groove 104, and the locking block 11 is prevented from shaking due to the existence of a gap between the locking block 11 and the groove 104.

[0072] According to some embodiments of the present application, as Figure 3As shown, a limiting groove 103 is provided on one side of the base 10 facing the welding seat 12 , and a bearing surface 107 is located on the inner bottom surface of the limiting groove 103 ; after the welding seat 12 is at least partially located in the limiting groove 103 , it abuts against the bearing surface 107 .

[0073] The limiting groove 103 in this embodiment is an overall concave structure, and the welding seat 12 can be completely located in the limiting groove 103, or the end of the welding seat 12 facing the bearing surface 107 is partially located in the limiting groove 103. The specific details can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0074] In this embodiment, when the end of the welding seat 12 facing the bearing surface 107 is located in the limiting groove 103, the side surface of the welding seat 12 facing the bearing surface 107 is in close contact with the side wall of the limiting groove 103. In this way, under the action of the limiting groove 103, the welding seat 12 can be stably connected to the bearing surface 107 to prevent the welding seat 12 from moving relative to the base 10.

[0075] According to some embodiments of the present application, Figure 4 Combined with Figure 5 As shown, the welding device includes at least two locking blocks 11 , and at least two grooves 104 are spaced apart on a side of the base 10 away from the bearing surface 107 , and the locking blocks 11 cooperate with the grooves 104 .

[0076] In this embodiment, two grooves 104 are arranged at intervals on one side of the base 10 away from the bearing surface 107, and the two grooves 104 are evenly distributed on the side of the base 10 away from the bearing surface 107. Two first connecting holes 111 are arranged on each locking block 11, and four first mounting holes 101 are evenly distributed on the base 10. Each first connecting member 13 passes through the welding seat 12 and the first mounting hole 101 and then extends into the first connecting hole 111.

[0077] Of course, it is understandable that the welding device may also include three or four locking blocks 11, etc. The specific number may be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0078] In this embodiment, two locking blocks 11 are set, and then four first connecting parts 13 are evenly distributed at the four corners of the welding seat 12. After each first connecting part 13 passes through the welding seat 12 and the first mounting hole 101, it extends into the first connecting hole 111. At this time, the welding seat 12 can be stably connected to the base 10.

[0079] According to some embodiments of the present application, Figure 8 As shown, the corners of the locking block 11 on both sides along the first direction are provided with chamfers, or, as shown in FIG. Figure 9 As shown, the two sides of the locking block 11 along the first direction are arc-shaped structures, wherein the first direction intersects with the direction in which the locking block 11 is inserted into the groove 104 .

[0080] The first direction in this embodiment is as follows Figure 8 or Figure 9 The X-axis direction.

[0081] like Figure 8 As shown, the corner in this embodiment refers to the intersection formed by the side surfaces on both sides of the locking block 11 along the X-axis direction and the side surfaces on both sides along the front-rear direction.

[0082] In this embodiment, when the corners on both sides of the locking block 11 along the X-axis direction are chamfered structures, or when the two sides of the locking block 11 along the X-axis direction are arc-shaped structures, it is convenient to place the locking block 11 into the groove 104, avoiding the collision of the locking block 11 along the Z-axis direction with the inner wall of the groove 104.

[0083] According to some embodiments of the present application, Figure 4 or Figure 5 As shown, the welding device further includes a second connecting member 14 , which passes through the base 10 and is connected to the welding seat 12 along a side of the base 10 facing away from the bearing surface 107 .

[0084] The second connecting member 14 in this embodiment can be a bolt, a screw, etc., and the specific one can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0085] refer to Figure 4 and Figure 5 As shown, in this embodiment, a second mounting hole 102 is set on the base 10, and a second connecting hole 122 is set on the welding seat 12. The second connecting hole 122 can be a threaded hole. When the second connecting member 14 passes through the second mounting hole 102 on the base 10 from bottom to top and then extends into the second connecting hole 122 on the welding seat 12, the second connecting member 14 is rotated so that the second connecting member 14 is tightened into the second connecting hole 122. At this time, the base 10 and the welding seat 12 can be connected together more firmly.

[0086] According to some embodiments of the present application, Figure 10 Combined with Figure 11 , Figure 12 As shown, the welding device further includes a second connecting member 14 , which passes through the locking block 11 and the base 10 in sequence along a side of the locking block 11 away from the groove 104 and is then connected to the welding seat 12 .

[0087] The specific structure of the second connecting member 14 in this embodiment can be referred to the above description and will not be repeated here.

[0088] refer to Figure 11As shown, when the locking block 11 is a square structure, the shape of the groove 104 matches the shape of the locking block 11. In this embodiment, a fourth connecting hole 114 is provided on the locking block 11. After the locking block 11 is placed in the groove 104, the second connecting member 14 is sequentially inserted into the fourth connecting hole 114 and the second mounting hole 102, and then tightened into the second connecting hole 122 on the welding seat 12. At this time, the locking block 11, the base 10 and the welding seat 12 can be stably connected together.

[0089] According to some embodiments of the present application, Figure 10 Combined with Figure 11 As shown, the welding device further includes a fastener 15 . When the locking block 11 is located in the groove 104 , the fastener 15 passes through the base 10 and is connected to the locking block 11 .

[0090] The fastener 15 in this embodiment can be a bolt, a screw, etc., and the specific one can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0091] refer to Figure 11 As shown, in this embodiment, a through hole 105 is provided on the side of the base 10, a third connecting hole 113 is provided on the side of the locking block 11, and an inner thread is provided on the inner wall of the third connecting hole 113.

[0092] When in use, after the locking block 11 is placed in the groove 104, the fastener 15 is passed through the through hole 105 and then tightened into the third connecting hole 113. At this time, the base 10 and the locking block 11 can be connected together more stably.

[0093] According to some embodiments of the present application, Figure 13 Combined with Figure 14 As shown, a limit block 106 is provided on the side of the base 10 away from the bearing surface 107 , and the limit block 106 is located in the groove 104 ; a through groove 115 is provided on the locking block 11 , and when the locking block 11 is located in the groove 104 , the limit block 106 is located in the through groove 115 .

[0094] The limiting block 106 in this embodiment is integrally formed with the base 10, or the limiting block 106 is connected to the base 10 by bolts. The specific details can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0095] In this embodiment, when the locking block 11 is located in the groove 104, the limiting block 106 is located in the through groove 115. At this time, the side wall of the limiting block 106 abuts against the inner wall of the through groove 115, and the locking block 11 will not move relative to the limiting block 106. In this way, through the cooperation between the limiting block 106 and the through groove 115, the locking block 11 can be stably located in the groove 104, and the shaking of the locking block 11 relative to the groove 104 can be avoided.

[0096] According to some embodiments of the present application, Figure 13 As shown, the welding device further includes a second connecting member 14 , which passes through the limiting block 106 and the base 10 in sequence along the side of the locking block 11 away from the groove 104 and is connected to the welding seat 12 .

[0097] The second connecting member 14 in this embodiment can be described with reference to the above, and will not be described again here.

[0098] In this embodiment, the second mounting hole 102 on the base 10 passes through the stop block 106. When connected, the second connecting member 14 passes through the second mounting hole 102 along the side of the locking block 11 away from the groove 104 and then extends into the second connecting hole 122 on the welding seat 12, so that the connection between the locking block 11 and the base 10 can be more stable.

[0099] According to some embodiments of the present application, Figure 13 As shown, the welding device further includes a fastener 15 . When the locking block 11 is located in the groove 104 , the fastener 15 passes through the base 10 and abuts against the locking block 11 .

[0100] The fastener 15 in this embodiment can be referred to the above description and will not be described again here.

[0101] In this embodiment, a through hole 105 is provided on the side of the base 10, and an internal thread is provided inside the through hole 105. When the locking block 11 is located in the groove 104, the fastener 15 is tightened into the through hole 105 and extends out from the through hole 105 to abut against the side of the locking block 11. At this time, under the pressure of the fastener 15, the locking block 11 can be stably located in the groove 104.

[0102] According to some embodiments of the present application, Figure 15 Combined with Figure 16 As shown, the locking block 11 is an annular structure, the cross section of the groove 104 is a circular structure, and the locking block 11 and the groove 104 are interference fit.

[0103] In this embodiment, the locking block 11 is annular in structure as a whole, which is only an example. In other alternative solutions, other structures may also be adopted, for example, the locking block is a prism structure as a whole, etc. This application does not impose any special restrictions on the specific structure of the locking block, as long as the above structure can achieve the purpose of this application.

[0104] In this embodiment, when the locking block 11 is inserted into the groove 104 , the locking block 11 and the groove 104 are interference fit, so that the locking block 11 can be stably located in the groove 104 .

[0105] The present application also provides a battery production line, comprising a welding device as described in any one of the embodiments of the present application.

[0106] The specific structure of the welding device in this embodiment refers to the above-mentioned embodiment. Since all the technical solutions of the above-mentioned embodiments are adopted in this battery production line, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0107] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding device, characterized in that: include: A base, wherein the base is provided with a bearing surface, and a groove is provided on a side of the base away from the bearing surface; A locking block, the locking block being arranged in the groove; A welding seat, the welding seat is arranged on the bearing surface; A first connecting member is provided through the welding seat, the base and the locking block.

2. The welding device according to claim 1, characterized in that: An end of the locking block facing the groove is provided with anti-slip teeth.

3. The welding device according to claim 1, characterized in that: When the locking block is located in the groove, the side surface of the locking block abuts against the inner wall of the groove.

4. The welding device according to claim 1, characterized in that: A limiting groove is provided on one side of the base facing the welding seat, and the bearing surface is located on the inner bottom surface of the limiting groove; The welding seat is at least partially located in the limiting groove and abuts against the bearing surface.

5. The welding device according to any one of claims 1 to 4, characterized in that: The welding device comprises at least two locking blocks, and at least two grooves are arranged at intervals on a side of the base away from the bearing surface, and the locking blocks cooperate with the grooves.

6. The welding device according to claim 5, characterized in that: The corners of the locking block on both sides along the first direction are provided with chamfers, or, Both sides of the locking block along the first direction are arc-shaped structures, wherein the first direction intersects with the direction in which the locking block is inserted into the groove.

7. The welding device according to claim 5, characterized in that: The welding device further comprises a second connecting member, which passes through the base along a side of the base away from the bearing surface and is connected to the welding seat.

8. The welding device according to any one of claims 1 to 4, characterized in that: The welding device further comprises a second connecting member, which passes through the locking block and the base in sequence along a side of the locking block away from the groove and is then connected to the welding seat.

9. The welding device according to claim 8, characterized in that: The welding device further comprises a fastener, and when the locking block is located in the groove, the fastener passes through the base and is connected to the locking block.

10. The welding device according to any one of claims 1 to 4, characterized in that: A limiting block is provided on a side of the base away from the bearing surface, and the limiting block is located in the groove; The locking block is provided with a through slot, the locking block is located in the groove, and the limiting block is located in the through slot.

11. The welding device according to claim 10, characterized in that: The welding device further comprises a second connecting member, which passes through the limiting block and the base in sequence along a side of the locking block away from the groove and is then connected to the welding seat.

12. The welding device according to claim 10, characterized in that: The welding device further comprises a fastener, and when the locking block is located in the groove, the fastener passes through the base and abuts against the locking block.

13. The welding device according to any one of claims 1 to 4, characterized in that: The locking block is an annular structure, the cross section of the groove is a circular structure, and the locking block and the groove are interference fit.

14. A battery production line, characterized in that: Comprising the welding device according to any one of claims 1 to 13.

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