Welding tool

Abstract

The utility model provides a welding tool, and relates to the field of battery manufacturing. The welding tool comprises a first adjusting assembly, a second adjusting assembly and a welding assembly, the welding assembly comprises a mounting part, a driving part and a welding copper nozzle, the driving part is fixed to the mounting part, the welding copper nozzle is connected with the driving part, and the driving part can drive the welding copper nozzle to move in the first direction; the welding assembly is arranged on the first adjusting assembly, the first adjusting assembly can drive the welding assembly to move in the second direction, the first adjusting assembly is connected with the second adjusting assembly, and the second adjusting assembly can drive the first adjusting assembly to move in the third direction. The welding tool can solve the problems that the position of a welding copper nozzle in an existing pressing plate structure is fixed, when the position of a battery cell deviates, the welding copper nozzle cannot compensate the deviation of the position of the battery cell, and then the welding quality is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery manufacturing, especially to a welding tool. BACKGROUND

[0002] With the development of new energy automobile industry and energy storage product field, lithium ion battery has been more and more widely used. In order to improve the energy density of battery pack, CTP structure (CTP, Cell To Pack, i. e. module-free battery pack structure) begins to appear, that is, a plurality of battery cells are directly combined to form a battery pack, so as to improve the energy density of the battery pack.

[0003] In the process of manufacturing CTP structure, the battery cell needs to be welded with the connecting sheet. In the welding process, a pressing plate structure is needed, and the pressing plate structure is fixed with a plurality of welding copper nozzles corresponding to the number of battery cells. However, the position of the welding copper nozzle is fixed. When the position of the battery cell deviates, the welding copper nozzle cannot compensate for the deviation of the position of the battery cell, thereby affecting the quality of welding. SUMMARY

[0004] Therefore, the welding tool is provided to solve the problem that the position of the welding copper nozzle in the existing pressing plate structure is fixed, and when the position of the battery cell deviates, the welding copper nozzle cannot compensate for the deviation of the position of the battery cell, thereby affecting the quality of welding.

[0005] The welding tool provided by the present application comprises a first adjusting assembly, a second adjusting assembly and a welding assembly. The welding assembly comprises a mounting member, a driving member and a welding copper nozzle. The driving member is fixed on the mounting member, and the welding copper nozzle is connected with the driving member. The driving member can drive the welding copper nozzle to move in a first direction.

[0006] The welding assembly is arranged on the first adjusting assembly. The first adjusting assembly can drive the welding assembly to move in a second direction. The first adjusting assembly is connected with the second adjusting assembly. The second adjusting assembly can drive the first adjusting assembly to move in a third direction. The first direction intersects with the second direction. The plane determined by the first direction and the second direction intersects with the third direction.

[0007] Preferably, the welding tool comprises a plurality of first adjusting assemblies. Each first adjusting assembly is provided with at least one welding assembly. At least one first adjusting assembly is connected with the welding assembly through a third adjusting assembly. The third adjusting assembly can drive the welding assembly to move in the third direction.

[0008] Preferably, the first adjusting assembly comprises an adjusting member, a slide rail and a slide block, the slide rail extends along a second direction, the welding assembly is connected with the adjusting member and the slide block respectively, the slide block is arranged on the slide rail and is capable of moving along the slide rail, and the adjusting member is capable of driving the welding assembly to move along the second direction.

[0009] Preferably, the welding assembly comprises a connecting member and a fixing block, the connecting member is connected with the driving member, the fixing block is connected with the connecting member, the fixing block is provided with a mounting hole penetrating through the fixing block along the first direction, a part of the welding copper nozzle is located in the mounting hole, and another part of the welding copper nozzle protrudes relative to the mounting hole.

[0010] Preferably, the welding assembly comprises a first dust removal pipe, the first dust removal pipe is fixed on the fixing block, and the first dust removal pipe is in communication with the inside of the welding copper nozzle.

[0011] The welding tool further comprises a converging pipe, and the first dust removal pipe is connected with the converging pipe.

[0012] Preferably, the welding assembly further comprises an adapter and a second dust removal pipe, the adapter is fixed on a side of the connecting member opposite to the fixing block, the adapter surrounds an adapter cavity, and the adapter cavity is in communication with the converging pipe through the second dust removal pipe.

[0013] The connecting member is provided with a connecting hole, and the adapter cavity is in communication with the inside of the welding copper nozzle through the connecting hole.

[0014] Preferably, the welding assembly further comprises a limiting plate and an abutting member, the limiting plate is connected with the connecting member, and the limiting plate is located on a side of the mounting member opposite to the welding copper nozzle along the first direction.

[0015] The abutting member is fixed on the mounting member, and the abutting member is capable of abutting with the limiting plate or being arranged in the first direction away from the limiting plate.

[0016] Preferably, the welding assembly further comprises a guide rod and a guide member, one end of the guide rod is connected with the limiting plate, the other end of the guide rod penetrates through the mounting member and is connected with the connecting member, the guide member is fixed on the mounting member, the guide member comprises a guide hole extending along the first direction, and a part of the guide rod is located in the guide hole.

[0017] Preferably, the welding assembly further comprises a hydraulic buffer, the hydraulic buffer is fixed on a side of the mounting member opposite to the welding copper nozzle along the first direction, and the hydraulic buffer is capable of being compressed along the first direction.

[0018] When the hydraulic buffer is in a natural state, the distance between the hydraulic buffer and the limiting plate in the first direction is greater than the distance between the abutting piece and the limiting plate in the first direction.

[0019] Preferably, the welding assembly further comprises a connecting piece and an elastic piece, the fixing block is fixed on the connecting piece;

[0020] The connecting piece is partially located in the accommodating hole and can slide relative to the accommodating hole, and the elastic piece is sleeved on the connecting piece and abuts against the fixing block and the connecting piece respectively.

[0021] In the use process of the welding tool of the present application, the welding copper nozzle is driven to move in the first direction by the driving piece to press the connecting piece, so as to perform laser welding. Since the welding assembly is arranged on the first adjusting assembly, the first adjusting assembly can drive the welding assembly to move in the second direction, the first adjusting assembly is connected with the second adjusting assembly, the second adjusting assembly can drive the first adjusting assembly to move in the third direction, and the position of the welding assembly in the second direction and the third direction can be adjusted through the first adjusting assembly and the second adjusting assembly, so that the position of the welding copper nozzle in the second direction and the third direction is adjusted. In this way, the welding copper nozzle can compensate for the deviation of the position of the battery cell, and the welding quality between the battery cell and the connecting piece is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0023] Figure 1 A perspective structural schematic diagram of the welding tool of the embodiment of the present application is shown;

[0024] Figure 2 An enlarged view of the A part in the middle is shown; Figure 1

[0025] Figure 3 A structural schematic diagram of the welding assembly from one perspective is shown;

[0026] Figure 4 A structural schematic diagram of the welding assembly from another perspective is shown;

[0027] Figure 5 A structural schematic diagram of the second connecting plate is shown;

[0028] Figure 6 ​A diagram showing the relative positions of the first adapter plate and the second adapter plate;

[0029] Figure 7 A diagram showing the relative positions of the fixing block, the first adapter plate and the second adapter plate;

[0030] Figure 8 A diagram showing Figure 7 A sectional view taken along B-B'.

[0031] FIG. 1 shows a first adjusting assembly; 11 shows an adjusting piece; 12 shows a slide rail; 13 shows a sliding block; 14 shows a first fixing plate; 15 shows a second fixing plate; 2 shows a second adjusting assembly; 3 shows a welding assembly; 31 shows a mounting piece; 32 shows a driving piece; 33 shows a welding copper nozzle; 34 shows an adapter; 341 shows a first adapter plate; 342 shows a second adapter plate; 343 shows a locating hole; 344 shows an opening; 345 shows a connecting hole; 35 shows a fixing block; 361 shows a nitrogen gas interface; 362 shows an adapter; 371 shows a connecting piece; 372 shows an elastic piece; 381 shows a first dust removal pipe; 382 shows a second dust removal pipe; 391 shows a limiting plate; 392 shows an abutting piece; 393 shows a hydraulic buffer; 394 shows a guide piece; 395 shows a guide rod; 4 shows a third adjusting assembly; 5 shows a mounting frame; 6 shows a pressure sensor; 7 shows a manifold pipe; 8 shows an explosion-proof anemometer; L1 shows a first direction; L2 shows a second direction; L3 shows a third direction. DETAILED DESCRIPTION

[0032] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and the

[0033] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the methods, apparatuses, and / or systems to those skilled in the art. Accordingly, the features described herein should not be construed as limiting, but merely as illustrative.

[0034] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element, or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on", "directly connected to", "directly coupled to", "directly adjacent to", "directly on top of", or "directly covering" another element, there are no other elements interposed therebetween.

[0035] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0036] Although terms such as "first", "second", and "third" can be used herein to describe various members, components, regions, layers or parts, these members, components, regions, layers or parts are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer or part from another member, component, region, layer or part. Thus, the member, component, region, layer or part referred to as the first member, component, region, layer or part in the examples described herein can also be referred to as the second member, component, region, layer or part without departing from the teachings of the examples.

[0037] For ease of description, spatial relationship terms, such as "on", "upper", "beneath", and "lower", can be used herein to describe the relationship of one element to another element as illustrated in the figures. Such spatial relationship terms can be intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a element described as on "top" or "upper" of another element would then be oriented on "bottom" or "lower" of the other element. Thus, the term "on" can encompass both an "on" and "under" orientation depending on the spatial orientation of the device. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and an appropriate modification to the spatial relationship terms would be made to those of skill in the art.

[0038] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0039] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0040] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0041] The following will combine Figures 1 to 8 The welding fixture of this application is described below. Figures 1 to 8 In the diagram, the first direction L1 intersects the second direction L2, and the plane defined by the first direction L1 and the second direction L2 intersects the third direction L3. Preferably, the first direction L1, the second direction L2, and the third direction L3 are all perpendicular to each other.

[0042] like Figures 1 to 8 As shown, the welding fixture includes a first adjustment component 1, a second adjustment component 2, and a welding component 3. The welding component 3 includes a mounting component 31, a driving component 32, and a welding nozzle 33. The driving component 32 is fixed on the mounting component 31, and the welding nozzle 33 is connected to the driving component 32. The driving component 32 can drive the welding nozzle 33 to move along a first direction L1. The welding component 3 is disposed on the first adjustment component 1. The first adjustment component 1 can drive the welding component 3 to move along a second direction L2. The first adjustment component 1 is connected to the second adjustment component 2, and the second adjustment component 2 can drive the first adjustment component 1 to move along a third direction L3.

[0043] In the process of using the welding tool of the present application, the welding copper nozzle 33 is driven to move along the first direction L1 by the driving member 32 to press the connecting piece, so as to perform laser welding. Since the welding assembly 3 is arranged on the first adjusting assembly 1, the first adjusting assembly 1 can drive the welding assembly 3 to move along the second direction L2, the first adjusting assembly 1 is connected with the second adjusting assembly 2, the second adjusting assembly 2 can drive the first adjusting assembly 1 to move along the third direction L3, the position of the welding assembly 3 in the second direction L2 and the third direction L3 can be adjusted through the first adjusting assembly 1 and the second adjusting assembly 2, so as to realize the adjustment of the position of the welding copper nozzle 33 in the second direction L2 and the third direction L3. In this way, the welding copper nozzle 33 can compensate for the deviation of the position of the battery cell, so as to ensure the welding quality between the battery cell and the connecting piece.

[0044] Preferably, the second adjusting assembly 2 is a double-drive linear module, and the first adjusting assembly 1 is arranged on the second adjusting assembly 2, so that the second adjusting assembly 2 can drive the first adjusting assembly 1 to move along the third direction L3.

[0045] In the embodiment of the present application, as shown in Figure 1 and Figure 2 The first adjusting assembly 1 includes an adjusting member 11, a sliding rail 12, a sliding block 13, a first fixed plate 14 and a second fixed plate 15, the sliding rail 12 extends along the second direction L2, both ends of the sliding rail 12 in the second direction L2 are fixed on the first fixed plate 14 and the second fixed plate 15 respectively, both ends of the adjusting member 11 in the second direction L2 are fixed on the first fixed plate 14 and the second fixed plate 15 respectively, and the first fixed plate 14 and the second fixed plate 15 are fixed on two parts of the second adjusting assembly 2 respectively. In this way, the fixing between the first adjusting assembly 1 and the second adjusting assembly 2 is realized. The welding assembly 3 is connected with the adjusting member 11, so that the adjusting member 11 can drive the welding assembly 3 to move along the second direction L2.

[0046] Further, the mounting member 31 of the welding assembly 3 is connected with the adjusting member 11 and the sliding block 13 respectively, the sliding block 13 is arranged on the sliding rail 12 and can move along the sliding rail 12, and the sliding block 13 moves along the sliding rail 12 when the adjusting member 11 drives the welding assembly 3 to move along the second direction L2. By arranging the sliding block 13 and the sliding rail 12, the stability of the movement of the welding assembly 3 can be improved. Preferably, the adjusting member 11 is a linear module.

[0047] Optionally, the welding tool includes one or more first adjusting assemblies 1, and when the welding tool includes a plurality of first adjusting assemblies 1, the plurality of first adjusting assemblies 1 are arranged at intervals along the third direction L3. Preferably, the welding tool includes two first adjusting assemblies 1.

[0048] In the embodiments of the present application, at least one welding assembly 3 is arranged on each first adjusting assembly 1, and the at least one first adjusting assembly 1 is connected with the welding assembly 3 through a third adjusting assembly 4, and the third adjusting assembly 4 can drive the welding assembly 3 to move along a third direction L3. In this way, the third adjusting assembly 4 can further adjust the position of the welding assembly 3 along the third direction L3, so that the welding assembly 3 can compensate for the deviation of the position of the battery cell.

[0049] Preferably, two welding assemblies 3 are arranged on each first adjusting assembly 1, and the two welding assemblies 3 are respectively corresponding to different battery cells. Figure 2 As shown, the mounting piece 31 of the first welding assembly 3 is connected with the adjusting piece 11 and the sliding block 13 on both sides of the third direction L3, and the second welding assembly 3 is connected with the mounting frame 5 through the third adjusting assembly 4, and the mounting frame 5 is connected with the adjusting piece 11 and the sliding block 13 on both sides of the third direction L3. In the use of the welding tool, the first welding assembly 3 can be used as a reference, and the first welding assembly 3 can be matched with the position of the battery cell corresponding to the first welding assembly 3 through the first adjusting assembly 1 and the second adjusting assembly 2. At this time, the position of the second welding assembly 3 may be deviated from the position of the battery cell corresponding to the second welding assembly 3, and the third adjusting assembly 4 is used to drive the second welding assembly 3 to move along the third direction L3, so that the position of the second welding assembly 3 is matched with the position of the battery cell corresponding to the second welding assembly 3.

[0050] Optionally, three, four or more welding assemblies 3 can be arranged on each first adjusting assembly 1, one of which is connected with the adjusting piece 11 and the sliding block 13 through the third adjusting assembly 4 and the mounting frame 5, and the other welding assemblies 3 are connected with the adjusting piece 11 and the sliding block 13 on both sides of the third direction L3.

[0051] As shown in Figure 3 , Figure 4 and Figure 5 , the welding assembly 3 comprises a connecting piece 34 and a fixing block 35, the connecting piece 34 comprises a first connecting plate 341 and a second connecting plate 342, the first connecting plate 341 is connected with the second connecting plate 342 through a bolt, and the first connecting plate 341 is connected with the driving piece 32. The fixing block 35 is connected with the connecting piece 34, the fixing block 35 is provided with a mounting hole penetrating through the fixing block 35 along the first direction L1, part of the welding copper nozzle 33 is located in the mounting hole, and the other part of the welding copper nozzle 33 protrudes relative to the mounting hole. The driving piece 32 can drive the connecting piece 34 to move along the first direction L1, so as to drive the connecting piece 34, the fixing block 35 and the welding copper nozzle 33 to move along the first direction L1, so as to compress the connecting piece, so as to facilitate laser welding. Optionally, the driving piece 32 is a pneumatic cylinder.

[0052] Preferably, the second adapter plate 342 is a glass fiber plate, and the pressure sensor 6 is arranged on the second adapter plate 342 to detect the pressure applied to the connecting sheet.

[0053] Further, as shown in Figure 4 , the fixing block 35 is further provided with a nitrogen interface 361 in communication with the inside of the welding copper nozzle 33, the nitrogen interface 361 is connected with a nitrogen source, and the surface of the connecting sheet can be uniformly covered with a layer of nitrogen through the nitrogen interface 361, so as to avoid direct contact between oxygen and the connecting sheet and reduce the probability of explosive welding.

[0054] As shown in Figure 5 , Figure 6 , Figure 7 and Figure 8 , the welding assembly 3 further comprises a connecting piece 371 and an elastic piece 372, the fixing block 35 can be threadedly connected with the connecting piece 371; the second adapter plate 342 is provided with a mounting hole 343, part of the connecting piece 371 is located in the mounting hole 343 and can slide relative to the mounting hole 343, and the elastic piece 372 is sleeved on the connecting piece 371 and abuts against the fixing block 35 and the second adapter plate 342 respectively. When the driving piece 32 drives the welding copper nozzle 33 to press the connecting sheet, the elastic piece 372 is compressed.

[0055] Preferably, the elastic piece 372 is a spring, the mounting hole 343 comprises a large-diameter portion and a small-diameter portion, the large-diameter portion and the small-diameter portion are in communication, the diameter of the large-diameter portion is greater than that of the small-diameter portion, the connecting piece 371 can be a bolt, the head of the bolt is located in the large-diameter portion, the rod of the bolt is located in the small-diameter portion, and the elastic piece 372 is sleeved on the small-diameter portion.

[0056] In the embodiment of the present application, as shown in Figure 4 , the welding assembly 3 comprises a first dust removal pipe 381, the first dust removal pipe 381 is fixed on the fixing block 35, and the first dust removal pipe 381 is in communication with the inside of the welding copper nozzle 33; the welding tool further comprises a manifold 7, and the first dust removal pipe 381 can be connected with the manifold 7 through a connecting pipe. The manifold 7 can be connected with a negative pressure device, so as to suck the smoke and dust generated by laser welding in the welding copper nozzle 33. Optionally, the manifold 7 is connected with the first adjusting assembly 1, so that the manifold 7 can move synchronously with the welding assembly 3. Optionally, an insulating piece is sleeved on the first dust removal pipe 381, the connecting pipe for connecting with the manifold 7 is sleeved on the outside of the insulating piece, and the insulating piece can be a glass fiber sleeve.

[0057] Further, as shown in Figure 3 and Figure 6As shown, the first adapter plate 341 is provided with an opening 344, and the second adapter plate 342 is provided with a connecting hole 345, and the opening 344 is in communication with the connecting hole 345. The welding assembly 3 further comprises an adapter 362 and a second dust removal pipe 382. The adapter 362 is fixed to the side of the adapter 34 opposite to the fixed block 35, and the adapter 362 is arranged around the opening 344. The adapter 362 surrounds an adapter cavity, and the adapter cavity is in communication with the flow pipe 7 through the second dust removal pipe 382. The adapter cavity is in communication with the inside of the welding copper nozzle 33 through the opening 344 and the connecting hole 345. In this way, under the action of the negative pressure device, the residual smoke at the upper part of the welding copper nozzle 33 can be sucked through the second dust removal pipe 382. Optionally, the mounting piece 31 is formed with a hollow part, so that the adapter 362 can be exposed.

[0058] Optionally, the welding assembly 3 can comprise a plurality of welding copper nozzles 33, and each welding copper nozzle 33 is provided with a fixed block 35 corresponding to it. The number of connecting holes 345 on the second adapter plate 342 is the same as the number of welding copper nozzles 33. The number of openings 344 can be less than or equal to the number of connecting holes 345. Each opening 344 is provided with an adapter 362 corresponding to it, and each adapter 362 is provided with a second dust removal pipe 382 corresponding to it.

[0059] Preferably, the welding assembly 3 comprises four welding copper nozzles 33 and four fixed blocks 35. Each fixed block 35 can be connected to the second adapter plate 342 through four connecting pieces 371. The second adapter plate 342 is provided with four connecting holes 345, and the four connecting holes 345 correspond to the four welding copper nozzles 33 respectively. The first adapter plate 341 can be provided with only two openings 344. The four connecting holes 345 are divided into two groups, and the two groups of connecting holes 345 correspond to the two openings 344 respectively. The two connecting holes 345 in one group are in communication with the corresponding opening 344. The number of adapters 362 is two, and the two adapters 362 are arranged around the two openings 344 respectively. The four welding copper nozzles 33 can be used to weld the adjacent two battery cells and the connecting piece.

[0060] In addition, as shown in the drawings, Figure 1 The flow pipe 7 can be connected with the explosion-proof anemometer 8 through a hose. The explosion-proof anemometer 8 is connected with the negative pressure device, and the explosion-proof anemometer can detect the flow rate of the airflow flowing therethrough.

[0061] In the embodiments of the present application, as shown in the drawings, Figure 3 and Figure 4As shown, the welding assembly 3 further comprises a limiting plate 391 and an abutting piece 392, the limiting plate 391 and the abutting piece 34 are respectively located on two sides of the mounting piece 31, and the limiting piece is connected with the abutting piece 34 through a guide rod 395. The abutting piece 392 is arranged on the side of the mounting piece 31 opposite to the abutting piece 34 in the first direction L1, and the abutting piece 392 can be abutted with the limiting plate 391 or arranged at intervals along the first direction L1. Before the welding copper nozzle 33 is pressed against the connecting sheet, the abutting piece 392 and the limiting plate 391 are arranged at intervals along the first direction L1, and in the process of driving the abutting piece 34 to move along the first direction L1 by the driving piece 32, the limiting plate 391 moves towards the abutting piece 392, and when the limiting plate 391 moves to abut against the abutting piece 392, the limiting plate 391 cannot continue to move, at this time, the abutting piece 34 and the welding copper nozzle 33 also cannot continue to move, so as to realize the limitation of the movement of the welding copper nozzle 33. Optionally, the abutting piece 392 is a bolt.

[0062] Further, the welding assembly 3 further comprises a hydraulic buffer 393, the hydraulic buffer 393 is fixed on the side of the mounting piece 31 opposite to the welding copper nozzle 33 in the first direction L1, and the hydraulic buffer 393 can be compressed along the first direction L1; when the hydraulic buffer 393 is in a natural state, the distance between the hydraulic buffer 393 and the limiting plate 391 in the first direction L1 is greater than the distance between the abutting piece 392 and the abutting piece 392 and the limiting plate 391 in the first direction L1. Before the welding copper nozzle 33 is pressed against the connecting sheet, the abutting piece 392 and the hydraulic buffer 393 are both arranged at intervals along the first direction L1 with the limiting plate 391, in the process of driving the abutting piece 34 to move along the first direction L1 by the driving piece 32, the limiting plate 391 moves towards the hydraulic buffer 393, and when the limiting plate 391 moves to contact the hydraulic buffer 393, the limiting plate 391 continues to move, so that the hydraulic buffer 393 is compressed along the first direction L1. In this way, the force exerted by the welding copper nozzle 33 on the connecting sheet can be buffered. When the limiting plate 391 moves to abut against the abutting piece 392, the welding copper nozzle 33 cannot continue to move.

[0063] In addition, the welding assembly 3 further comprises a guide 394, one end of the guide rod 395 is connected with the limiting plate 391, the other end of the guide rod 395 passes through the mounting piece 31 and is connected with the abutting piece 34, and the guide 394 is fixed on the mounting piece 31. The guide 394 comprises a guide hole extending along the first direction L1, and part of the guide rod 395 is located in the guide hole. Through the guide 394, the movement of the guide rod 395 can be guided, and the movement of the abutting plate can be guided.

[0064] Preferably, the guide 394 is a linear bearing.

[0065] Optionally, the welding assembly 3 can include two driving members 32, and the two driving members 32 jointly drive the adapter 34 to move. Two limiting plates 391 can be arranged in the welding assembly 3, each limiting plate 391 can be correspondingly provided with two guide rods 395, and each limiting plate 391 can be correspondingly provided with two abutting members 392 and two hydraulic buffers 393.

[0066] In the use of the welding tooling of the present application, the welding tooling is located below the laser welding equipment, the CTP module can be moved to below the welding tooling under the drive of the trolley, then the position of the welding assembly 3 is adjusted through the first adjusting assembly 1 and the second adjusting assembly 2, and the position of the welding assembly 3 connected with the third adjusting assembly 4 is adjusted through the third adjusting assembly 4, so that the position of the welding assembly 3 can be matched with the battery cell. Then the driving member 32 drives the welding copper nozzle 33 to move along the first direction L1, so as to compress the connecting piece, then the negative pressure equipment is opened to carry out dust removal through the first dust removal pipe 381 and the second dust removal pipe 382, and nitrogen is introduced through the nitrogen gas interface 361. Finally, laser welding is carried out, so as to connect the connecting piece with the battery cell.

[0067] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part 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.

Claims

1. A welding fixture, characterized by, The welding tool comprises a first adjusting assembly, a second adjusting assembly and a welding assembly, the welding assembly comprises a mounting member, a driving member and a welding copper nozzle, the driving member is fixed on the mounting member, the welding copper nozzle is connected with the driving member, and the driving member can drive the welding copper nozzle to move in a first direction; The welding assembly is arranged on the first adjusting assembly, the first adjusting assembly can drive the welding assembly to move in a second direction, the first adjusting assembly is connected with the second adjusting assembly, the second adjusting assembly can drive the first adjusting assembly to move in a third direction, the first direction intersects with the second direction, and a plane determined by the first direction and the second direction intersects with the third direction.

2. The welding fixture of claim 1, wherein, The welding tool comprises a plurality of first adjusting assemblies, at least one welding assembly is arranged on each first adjusting assembly, and at least one first adjusting assembly is connected with the welding assembly through a third adjusting assembly, the third adjusting assembly can drive the welding assembly to move in the third direction.

3. The welding fixture of claim 1, wherein, The first adjusting assembly comprises an adjusting member, a sliding rail and a sliding block, the sliding rail extends in a second direction, the welding assembly is connected with the adjusting member and the sliding block respectively, the sliding block is arranged on the sliding rail and can move along the sliding rail, and the adjusting member can drive the welding assembly to move in the second direction.

4. The welding fixture of any one of claims 1-3, wherein, The welding assembly comprises a connecting member and a fixing block, the connecting member is connected with the driving member, the fixing block is connected with the connecting member, the fixing block is provided with a mounting hole, the mounting hole penetrates through the fixing block in the first direction, part of the welding copper nozzle is located in the mounting hole, and the other part of the welding copper nozzle protrudes relative to the mounting hole.

5. The welding fixture of claim 4, wherein, The welding assembly comprises a first dust removal pipe, the first dust removal pipe is fixed on the fixing block, and the first dust removal pipe is in communication with the inside of the welding copper nozzle. The welding tool further comprises a converging pipe, and the first dust removal pipe is connected with the converging pipe.

6. The welding fixture of claim 5, wherein, The welding assembly further comprises an adapter and a second dust removal pipe, the adapter is fixed on the side of the connecting member away from the fixing block, the adapter surrounds an adapter cavity, and the adapter cavity is in communication with the converging pipe through the second dust removal pipe. The connecting member is provided with a connecting hole, and the adapter cavity is in communication with the inside of the welding copper nozzle through the connecting hole.

7. The welding fixture of claim 4, wherein, The welding assembly further comprises a limiting plate and an abutting member, the limiting plate is connected with the connecting member, and the limiting plate is located on the side of the mounting member away from the welding copper nozzle in the first direction. The abutting member is fixed on the mounting member, and the abutting member can abut against the limiting plate or be arranged at intervals with the limiting plate in the first direction.

8. The welding fixture of claim 7, wherein, The welding assembly further comprises a guide rod and a guide member, one end of the guide rod is connected with the limiting plate, the other end of the guide rod penetrates through the mounting member and is connected with the connecting member, the guide member is fixed on the mounting member, the guide member comprises a guide hole, the guide hole extends in the first direction, and part of the guide rod is located in the guide hole.

9. The welding fixture of claim 7, wherein, The welding assembly further comprises a hydraulic buffer fixed on a side of the mounting piece opposite to the welding copper nozzle in the first direction, and the hydraulic buffer is compressible in the first direction; When the hydraulic buffer is in a natural state, a distance between the hydraulic buffer and the limiting plate in the first direction is greater than a distance between the abutting piece and the limiting plate in the first direction.

10. The welding fixture of claim 4, wherein, The welding assembly further comprises a connecting piece and an elastic piece, and the fixed block is fixed on the connecting piece; The connecting piece is partially located in a placement hole of the abutting piece and is slidable relative to the placement hole, and the elastic piece is sleeved on the connecting piece and abuts against the fixed block and the abutting piece, respectively.

Images