Chip welding tool

Abstract

The utility model relates to a piece welding tool, and belongs to the technical field of tools, the piece welding tool comprises a first positioning assembly, a second positioning assembly and a clamping assembly, the first positioning assembly comprises a base used for placing a battery cell; and the second positioning assembly comprises a guide column arranged on the base, and the guide column is provided with an end plate piece used for limiting the side edge of the bar piece and a pressing plate piece used for pressing the bar piece. As the guide post is provided with the end plate piece for limiting the side edge of the bar piece and the pressing plate piece for pressing the bar piece, when the bar piece is pressed on the top surface of the pole post of the battery cell, the side edge of the bar piece can be firstly limited through the end plate piece, and then the bar piece is pressed on the top surface of the pole post of the battery cell by utilizing the pressing plate piece; according to the utility model, the pole of the battery cell is not easy to slide upwards before the sheet is pressed or in the pressing process, so that the sheet can be prevented from sliding and misplacing to a certain extent, the welding consistency of the sheet is improved, and the quality of a welded product is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of tooling, and in particular to a bar welding tooling. Background Art

[0002] The battery pack is composed of multiple cells, and the individual cells are connected in series or in parallel through tabs. Tabs are usually connected to the poles of the cells through welding. However, when using existing welding jigs to weld tabs on cell, tabs can only be welded for one type of cell. To weld tabs on cells of different types and heights, different welding jigs must be installed on different laser welding machines. The structure is simple, the compatibility is poor, the production efficiency is low, and the jig cost is high.

[0003] In the related art, the utility model patent with the authorization announcement number CN218311675U discloses a compatible battery cell bar welding fixture, which is used to solve the problems of single structure and poor compatibility of welding fixtures in the prior art. It includes a base plate, a tightening mechanism and a height adjustment mechanism. The base plate is provided with a fixing seat for fixing the battery cell, and a pressing plate for pressing the bar is provided above the fixing seat. The pressing plate is provided with a welding clearance hole. The two ends of the pressing plate are respectively installed on the upper ends of the two height adjustment mechanisms through the tightening mechanism. The two height adjustment mechanisms are respectively installed at the two ends of the base plate for adjusting the installation height of the pressing plate according to different battery cells; it also includes a mounting plate, and the upper surface of the mounting plate is provided with a plurality of slide grooves distributed along the width direction, and the plurality of slide grooves extend along the length direction of the mounting plate. The lower surface of the base plate is provided with a slider adapted to the slide groove, and the base plate is slidably connected to the slide groove through the slider, and a brake assembly is provided on the base plate.

[0004] However, the above-mentioned welding fixture has poor side limiting effect on the bar. Since most of the existing bar structures are flat and smooth on both sides, the friction between the bar and the battery cell pole is small. The bar is easily affected by external forces and slips and dislocates before or during clamping, resulting in poor welding consistency and affecting product quality. Summary of the invention

[0005] The embodiment of the present application provides a bar welding tool to solve the problem that the welding fixture in the related art has poor side limiting effect on the bar, and the bar is easy to slide sideways on the pole of the battery cell, resulting in poor welding consistency and affecting product quality.

[0006] The present application provides a bar welding tool, including:

[0007] A first positioning assembly, comprising a base for placing the battery cell;

[0008] The second positioning assembly includes a guide column arranged on the base, and the guide column is provided with an end plate component for limiting the side edge of the bar piece and a pressure plate component for pressing the bar piece.

[0009] In some embodiments, a fixing plate fixedly connected to the guide column is disposed above the pressing plate, and a tightening member for tightening the pressing plate downward is disposed on the fixing plate.

[0010] In some embodiments, the end plate comprises a sliding plate slidably connected to the guide post, and a limiting block disposed on the sliding plate and used to abut against a side edge of the tab.

[0011] In some embodiments, the limiting block includes a first limiting block for abutting against a long side of the tab, and a second limiting block for abutting against a short side of the tab.

[0012] In some embodiments, the sliding plate is provided with a first strip-shaped hole extending along the length direction of the sliding plate, and the first limiting block is provided with a first fastener penetrating into the first strip-shaped hole.

[0013] In some embodiments, the second limiting block is provided with a second strip-shaped hole extending along the width direction of the sliding plate, and the sliding plate is provided with a second fastener penetrating into the second strip-shaped hole.

[0014] In some embodiments, the pressure plate member includes a sliding frame slidably connected to the guide column, an insulating frame is slidably connected to the inner side of the sliding frame along its width direction, and a copper mouth for abutting the top surface of the bar piece is slidably connected to the inner side of the insulating frame along its length direction, and the copper mouth is provided with a welding clearance hole for exposing the bar piece.

[0015] In some embodiments, the copper nozzle includes a heat-resistant portion and a heat-conducting portion fixed on the lower surface of the heat-resistant sheet.

[0016] In some embodiments, the first positioning assembly further includes a limiting protrusion disposed on the base and configured to abut against a side wall of the battery cell.

[0017] In some embodiments, a pad for supporting the base is further included, and a limiting arm for abutting against a side wall of the battery cell is provided on the pad.

[0018] The beneficial effects of the technical solution provided by this application include:

[0019] An embodiment of the present application provides a bar welding tool, which includes a first positioning component, which includes a base for placing a battery cell; a second positioning component, which includes a guide column arranged on the base, and the guide column is provided with an end plate for limiting the side of the bar, and a pressure plate for pressing the bar.

[0020] Therefore, when pressing the tab onto the top surface of the pole of the battery cell, the side of the tab can be limited by the end plate first, and then the tab can be pressed onto the top surface of the pole of the battery cell using the pressure plate, so that the tab is not easy to slide sideways on the pole of the battery cell before or during the pressing process, thereby avoiding the tab from slipping and misalignment to a certain extent, improving the poor consistency of the tab welding, and thus ensuring the quality of the product after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0023] Figure 2 A top view of the structure of the sliding plate of an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the structure of the sliding frame of an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of a base according to an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of the structure of the pad according to an embodiment of the present application.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Base; 2. Guide column; 3. Fixed plate; 4. Fastening member; 5. Sliding plate; 6. First limiting block; 7. Second limiting block; 8. First strip hole; 9. First fastener; 10. Second strip hole; 11. Second fastener; 12. Sliding frame; 13. Insulating frame; 14. Copper nozzle; 141. Heat-resistant sheet; 142. Heat-conducting sheet; 15. Limiting protrusion; 16. Pad; 17. First limiting arm; 18. Second limiting arm. DETAILED DESCRIPTION

[0029] 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 and completely 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 making creative work are within the scope of protection of this application.

[0030] The embodiment of the present application provides a bar welding tool, which can solve the problem that the welding fixture in the related technology has poor side limiting effect on the bar, the bar is easy to slide sideways on the pole of the battery cell, resulting in poor welding consistency and affecting product quality.

[0031] See also Figures 1 to 5 As shown, the embodiment of the present application provides a bar welding tool, including:

[0032] A first positioning assembly, comprising a base 1 for placing a battery cell;

[0033] The second positioning assembly includes a guide column 2 arranged on the base 1, and the guide column 2 is provided with an end plate component for limiting the side edge of the bar piece and a pressure plate component for pressing the bar piece.

[0034] The bar welding tooling of the embodiment of the present application is provided with a first positioning component and a second positioning component, the first positioning component includes a base 1 for placing the battery cell, the second positioning component includes a guide column 2 arranged on the base 1, and the guide column 2 is provided with an end plate for limiting the side of the bar, and a pressure plate for pressing the bar, and the end plate and the pressure plate can slide along the guide column 2 to adjust the position.

[0035] Specifically, after the battery cell is placed on the base 1, a tab is placed on the top pole of the battery cell. When the tab is pressed against the top surface of the pole of the battery cell, the side of the tab can be limited by the end plate first, and then the position of the pressing plate is adjusted. The tab is pressed against the top surface of the pole of the battery cell using the pressing plate, so that the tab is not easy to slide sideways on the pole of the battery cell before or during pressing, thereby facilitating the welding of the tab.

[0036] In this example, there are two guide columns 2, which are fixed on the top surface of the base 1 at vertical intervals. A first sliding sleeve that slides with the guide column 2 is fixed on the end plate, and a second sliding sleeve that slides with the guide column 2 is fixed on the pressure plate. The contact area between the sliding sleeve and the guide column 2 is large, thereby ensuring sliding stability. In addition, the pressure plate can use its own weight to press the bar, or a counterweight can be placed on the pressure plate to ensure the compression of the bar.

[0037] In some alternative embodiments: See Figure 1 As shown, an embodiment of the present application provides a bar-piece welding tool, and a fixing plate 3 fixedly connected to a guide column 2 is arranged above the pressure plate of the bar-piece welding tool, and a tightening member 4 for pressing the pressure plate downward is arranged on the fixing plate 3.

[0038] In the embodiment of the present application, a fixing plate 3 fixedly connected to the guide column 2 is arranged above the pressing plate, and a pressing member 4 is installed on the fixing plate 3. The pressing member 4 is used to press the pressing plate downward so that the pressing plate presses the bar sheet on the top surface of the pole of the battery cell. For example, the pressing member 4 can be a toggle clamp or a screw, which is easy to use. Furthermore, an elastic member, such as a rubber block or a spring, can be arranged at the pressing end of the pressing member 4 to ensure the pressing effect.

[0039] In some alternative embodiments: See Figure 1 and Figure 2 As shown, an embodiment of the present application provides a bar-piece welding tool, the end plate of which includes a sliding plate 5 slidably connected to a guide column 2, and a limit block arranged on the sliding plate 5 and used to abut against the side of the bar piece.

[0040] The end plate component of the embodiment of the present application includes a sliding plate 5 slidably connected to the guide column 2, and a limit block is fixedly installed on the sliding plate 5. The limit block abuts against the side of the bar piece to limit the lateral movement of the bar piece, making it convenient for the subsequent pressing plate component to move down and press the bar piece.

[0041] In some alternative embodiments: See Figure 1 and Figure 2 As shown, an embodiment of the present application provides a bar-piece welding tool, the limit blocks of which include a first limit block 6 for abutting against the long side of the bar piece, and a second limit block 7 for abutting against the short side of the bar piece.

[0042] The limit blocks of the embodiment of the present application include a first limit block 6 for abutting against the long side of the bar piece, and a second limit block 7 for abutting against the short side of the bar piece. When in use, the first limit block 6 is fixedly installed on the sliding plate 5 and contacts with the long side of one side of the bar piece, thereby limiting the bar piece from sliding toward the side where the first limit block 6 is located; the second limit block 7 is fixedly installed on the sliding plate 5 and contacts with the short side of one side of the bar piece, thereby limiting the bar piece from sliding toward the side where the second limit block 7 is located.

[0043] It should be noted that first limit blocks 6 can be arranged on both long sides of the bar piece to limit the lateral sliding of the bar piece. The figure does not show that first limit blocks 6 are arranged on both sides of a single bar piece.

[0044] In some alternative embodiments: See Figure 2 As shown, an embodiment of the present application provides a bar welding tool, the sliding plate 5 of which is provided with a first strip hole 8 extending along the length direction of the sliding plate 5, and the first limit block 6 is provided with a first fastener 9 penetrating into the first strip hole 8.

[0045] The sliding plate 5 of the embodiment of the present application is provided with a first strip hole 8 extending along the length direction of the sliding plate 5, and the first limiting block 6 is provided with a first fastener 9 penetrating into the first strip hole 8, and the first limiting block 6 is fixed to the sliding plate 5 by the first fastener 9. Specifically, the second fastener 11 is a bolt, and the position of the first limiting block 6 can be adjusted along the length direction of the first strip hole 8 by changing the position of the bolt in the first strip hole 8, so as to facilitate the side positioning of the bar piece by adaptively adjusting the position of the first limiting block 6 according to the width size of the bar piece.

[0046] In some alternative embodiments: See Figure 2 As shown, an embodiment of the present application provides a bar welding tool, on which a second limit block 7 is provided with a second strip hole 10 extending along the width direction of the sliding plate 5, and the sliding plate 5 is provided with a second fastener 11 penetrating into the second strip hole 10.

[0047] The second limit block 7 of the embodiment of the present application is provided with a second strip hole 10 extending in the width direction of the sliding plate 5, and the sliding plate 5 is provided with a second fastener 11 penetrating into the second strip hole 10, and the second limit block 7 is fixed to the sliding plate 5 by the second fastener 11. Specifically, the second fastener 11 is a bolt. By changing the position of the bolt in the second strip hole 10, the position of the second limit block 7 can be adjusted along the length direction of the second strip hole 10, so as to facilitate the side limit of the bar piece by adaptively adjusting the position of the second limit block 7 according to the length size of the bar piece.

[0048] In some alternative embodiments: See Figure 1 and Figure 3 As shown, an embodiment of the present application provides a bar-piece welding tool, the pressure plate of which includes a sliding frame 12 slidably connected to a guide column 2, an insulating frame 13 is slidably connected to the inner side of the sliding frame 12 along its width direction, and a copper nozzle 14 for abutting the top surface of the bar piece is slidably connected to the inner side of the insulating frame 13 along its length direction, and the copper nozzle 14 is provided with a welding clearance hole exposing the bar piece.

[0049] The pressure plate member of the embodiment of the present application includes a sliding frame 12 that is slidably connected to the guide column 2, an insulating frame 13 is installed on the inner side of the sliding frame 12, and two copper nozzles 14 corresponding to the positive and negative poles are installed on the insulating frame 13. When the two copper nozzles 14 press the bar piece, the insulating frame 13 can prevent the positive and negative poles on both sides from being conductive. At the same time, a welding clearance hole is opened on the copper nozzle 14, and the welding clearance hole exposes part of the top surface of the bar piece to facilitate welding the end of the bar piece.

[0050] In addition, in the present embodiment, a sliding groove cooperating with the insulating frame 13 is provided on the inner side of the sliding frame 12, so that the insulating frame 13 can slide along the width direction of the sliding frame 12, and the insulating frame 13 can drive the copper nozzle 14 to move, so that the position of the copper nozzle 14 can be adjusted in the width direction of the sliding frame 12. At the same time, a sliding groove cooperating with the insulating frame 13 is provided on the copper nozzle 14, so that the copper nozzle 14 can slide along the length direction of the insulating frame 13, so that the position of the copper nozzle 14 can be adjusted in the length direction of the insulating frame 13, thereby facilitating the adjustment of the position of the copper nozzle 14 to accurately cover the top surface of the bar piece, and facilitating the copper nozzle 14 to align with the bar piece and press it.

[0051] In some alternative embodiments: See Figure 3 As shown, an embodiment of the present application provides a bar welding tool, and the copper nozzle 14 of the bar welding tool includes a heat-resistant part 141 and a heat-conducting part 142 fixed on the lower surface of the heat-resistant part 141.

[0052] The copper nozzle 14 of the embodiment of the present application includes a heat-resistant part 141 and a heat-conducting part 142 fixed on the lower surface of the heat-resistant part 141. For example, the heat-resistant part 141 is an epoxy glass block, and the heat-conducting part 142 is a brass block, which is provided with a slide groove that cooperates with the insulating frame 13. The epoxy glass block and the brass block are fixedly connected by screws, which is convenient for installation on the insulating frame 13. Due to the high local temperature rise during the laser welding process of the bar piece, the brass block that presses the bar piece can quickly conduct and share part of the heat, reduce the temperature rise at the bar piece welding point, and ensure the welding effect. In addition, the epoxy glass block has good heat resistance and can cover the top surface of the brass block, which can play a heat-resistant isolation effect.

[0053] In some alternative embodiments: See Figure 1 and Figure 4 As shown, an embodiment of the present application provides a bar welding tool, and the first positioning component of the bar welding tool also includes a limiting protrusion 15 arranged on the base 1 and used to abut against the side wall of the battery cell.

[0054] The first positioning component of the embodiment of the present application also includes a limiting protrusion 15 arranged on the base 1 and used to abut against the side wall of the battery cell. The limiting protrusion 15 and the base 1 can cooperate to limit the battery cell. In this example, the limiting protrusion 15 is fixed to the base 1 and is L-shaped, which can fit with a corner of the bottom end of the battery cell to play a limiting role.

[0055] In some alternative embodiments: See Figures 1 to 5 As shown, an embodiment of the present application provides a bar welding tool, which also includes a pad 16 for supporting the base 1, and a limiting arm for abutting against the side wall of the battery cell is provided on the pad 16.

[0056] The embodiment of the present application is also provided with a pad 16 for supporting the base 1, and a limiting arm for abutting the side wall of the battery cell is fixedly installed on the pad 16. Specifically, the limiting arm is in the shape of a limiting arm L, including a first limiting arm 17 and a second limiting arm 18. The first limiting arm 17 and the second limiting arm 18 are respectively used to abut against the adjacent two large surfaces of the limiting battery cell, which can further ensure the stability of the battery cell after positioning.

[0057] Specifically, during installation, the pad 16 is fixed on the laser welding machine, and according to the welding head position of the welding machine and the position of the bar to be welded, the base 1 is placed on the pad 16, and the battery cell is placed on the base 1, and the battery cell is positioned by using the limiting protrusion 15 on the base 1 and the first limiting arm 17 and the second limiting arm 18 on the pad 16;

[0058] Then, by adjusting the positions of the first limit block 6 and the second limit block 7 on the sliding plate 5 and placing the bar at the bottom of the battery cell accordingly, and using the first limit block 6 and the second limit block 7 to limit the bar, adjust the height of the sliding frame 12, and use the tightening member 4 on the fixed plate 3 to press the sliding frame 12 downward, so that the copper nozzles 14 on both sides of the sliding frame 12 press the bar on both sides downward, weld the positioning holes on the copper nozzle 14 to expose part of the top surface of the bar, and finally use the welding head of the welding machine to weld the bar.

[0059] In the description of this application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0060] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0061] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A bar welding tool, characterized in that: include: A first positioning assembly, comprising a base (1) for placing a battery cell; The second positioning assembly comprises a guide column (2) arranged on the base (1), and the guide column (2) is provided with an end plate component for limiting the side edge of the bar piece, and a pressure plate component for pressing the bar piece.

2. The bar welding tool as claimed in claim 1, characterized in that: A fixing plate (3) fixedly connected to the guide column (2) is arranged above the pressing plate, and a pressing member (4) for pressing the pressing plate downward is arranged on the fixing plate (3).

3. The bar welding tool as claimed in claim 1, characterized in that: The end plate comprises a sliding plate (5) slidably connected to the guide column (2), and a limiting block arranged on the sliding plate (5) and used to abut against the side edge of the bar.

4. The bar welding tool as claimed in claim 3, characterized in that: The limiting block comprises a first limiting block (6) for abutting against the long side of the flap, and a second limiting block (7) for abutting against the short side of the flap.

5. The bar welding tool as claimed in claim 4, characterized in that: The sliding plate (5) is provided with a first strip-shaped hole (8) extending along the length direction of the sliding plate (5), and the first limiting block (6) is provided with a first fastener (9) penetrating into the first strip-shaped hole (8).

6. The bar welding tool as claimed in claim 4, characterized in that: The second limit block (7) is provided with a second strip-shaped hole (10) extending in the width direction of the sliding plate (5), and the sliding plate (5) is provided with a second fastener (11) penetrating into the second strip-shaped hole (10).

7. The bar welding tool as claimed in claim 1, characterized in that: The pressure plate member comprises a sliding frame (12) slidably connected to the guide column (2); an insulating frame (13) is slidably connected to the inner side of the sliding frame (12) along its width direction; a copper nozzle (14) for abutting against the top surface of the bar piece is slidably connected to the inner side of the insulating frame (13) along its length direction; and a welding clearance hole for exposing the bar piece is provided on the copper nozzle (14).

8. The bar welding tool as claimed in claim 7, characterized in that: The copper nozzle (14) comprises a heat-resistant portion (141) and a heat-conducting portion (142) fixed on the lower surface of the heat-resistant portion (141).

9. The bar welding tool as claimed in claim 1, characterized in that: The first positioning assembly also includes a limiting protrusion (15) arranged on the base (1) and used to abut against the side wall of the battery cell.

10. The bar welding tool as claimed in claim 1, characterized in that: It also comprises a pad (16) for supporting the base (1), and a limiting arm for abutting against the side wall of the battery cell is arranged on the pad (16).

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