manifold welding tensile test fixture

Abstract

This invention proposes a welding tensile testing fixture for manifolds, used to clamp welded manifolds. It includes a connecting plate and several clamping claws. The connecting plate has several spaced-apart adjustment slots. The clamping claws are disposed on the connecting plate and are correspondingly embedded in the adjustment slots to clamp the manifold at different positions. The positions of the clamping claws on the connecting plate are adjustable. When testing the welding tensile strength of the manifold, the adjustment slots on the connecting plate allow the clamping claws to change position, enabling them to be positioned to accommodate manifolds of different sizes, thus achieving the clamping of manifolds of varying dimensions.

Description

Technical Field

[0001] This utility model relates to the field of battery testing device technology, and in particular to a current collector welding tensile test fixture. Background Technology

[0002] In cylindrical all-tab lithium-ion batteries, the current collector is welded to the end of the winding core. To test the connection force between the current collector and the winding core, a test fixture customized according to the specific dimensions of the current collector is used to clamp it. Then, an external pulling device pulls the test fixture upwards, breaking the welded area between the current collector and the winding core to calculate the welding tensile force. Currently, the test fixtures for clamping current collectors on the market are all customized non-standard products. For different sizes of current collectors, multiple fixtures of different sizes are required, increasing the cost of testing the welding tensile force of current collectors.

[0003] Therefore, a welding tensile testing fixture for manifolds with adjustable clamping size is proposed to solve the technical problem that existing testing fixtures cannot adapt to manifolds of various sizes. Summary of the Invention

[0004] In view of this, the present invention proposes a manifold welding tensile test fixture with adjustable clamping size to solve the technical problem that the clamping size of existing test fixtures cannot be adjusted.

[0005] This utility model proposes a welding tensile testing fixture for manifolds, used to hold a manifold that has been welded, comprising:

[0006] A connecting plate, wherein the connecting plate has several adjustment slots spaced apart;

[0007] Several grippers are set on the connecting plate and are embedded in the several adjusting slots in a corresponding manner to hold the collector plate at different positions.

[0008] The positions of the several grippers on the connecting plate are adjustable.

[0009] Based on the above technical solutions, preferably, the gripper includes: an adjustment part, one end of which is slidably connected to the connecting disk, and the other end of which passes through the adjustment groove and extends outward;

[0010] A clamping part is fixedly disposed at one end of the adjusting part away from the connecting plate, and is used to clamp the collector plate partially embedded in the adjusting groove and adjust its position on the connecting plate through the adjusting groove. The other end of the adjusting part away from the connecting plate is provided with a clamping part, which is used to clamp the collector plate.

[0011] Based on the above technical solutions, preferably, the adjustment unit includes:

[0012] A horizontal bar is slidably connected to the connecting plate, with one side of the horizontal bar abutting against the surface of the connecting plate on both sides of the adjusting groove;

[0013] A vertical rod, one end of which passes through the adjustment groove and is vertically fixed to the side where the horizontal rod and the connecting plate abut against each other, and the other end of the vertical rod away from the horizontal rod is provided with a clamping part.

[0014] Based on the above technical solutions, preferably, the clamping part includes:

[0015] Two fixed plates are parallel to each other and spaced apart. One end of each fixed plate is fixedly connected to the end of the vertical rod away from the horizontal rod, and a clamping space is formed between the other ends of the two fixed plates.

[0016] At least one bolt is provided. The two fixing plates are parallel to each other and spaced apart. One end of the two fixing plates is fixedly connected to the end of the vertical rod away from the horizontal rod. A clamping space is formed between the other ends of the two fixing plates. At least one bolt is provided on the fixing plate and moves along the axial direction of the connecting plate to abut against the collecting plate between the two fixing plates.

[0017] Based on the above technical solutions, preferably, the number of bolts is one, and the bolt is threadedly connected to any one of the fixing plates.

[0018] Based on the above technical solutions, preferably, the number of bolts is two, and the two bolts are symmetrically arranged on the two fixing plates.

[0019] Based on the above technical solutions, preferably, the plurality of adjustment grooves extend in a direction away from the center of the connecting disk and penetrate through the outer edge of the connecting disk.

[0020] Based on the above technical solutions, preferably, the plurality of adjustment grooves are distributed at equal intervals relative to the central axis of the connecting plate.

[0021] Based on the above technical solutions, preferably, an external connector is also included, which is located at the center of the connecting plate and is used to connect the external pulling device and the connecting plate.

[0022] Based on the above technical solution, preferably, a through hole is formed in the center of the connecting plate, and the external connector includes:

[0023] The small outer diameter section has one end passing through the through hole and connected to an external pulling device.

[0024] The large outer diameter section has a diameter larger than that of the small outer diameter section and the through hole. The large outer diameter section is connected to the other end of the small outer diameter section away from the external pulling device and abuts against the surface of the connecting plate.

[0025] The welding tensile testing fixture for the manifold provided by this utility model has the following advantages compared with the prior art:

[0026] (1) An adjustment groove is provided on the connecting plate. The position of the clamp can be changed through the adjustment groove so that the position of the clamp on the connecting plate can correspond to different sizes of collector plates, thereby realizing the clamping of collector plates of different sizes.

[0027] (2) The vertical rod is held vertically against the surface of the connecting plate by the horizontal rod. The two fixed plates are set vertically on the vertical rod. The collecting plate is clamped at each clamping part. When the connecting plate is pulled upward, it can be ensured that each clamping part pulls the collecting plate vertically upward.

[0028] (3) Each adjustment slot extends through the outer edge of the connecting plate. By sliding on the adjustment slot with the horizontal and vertical rods, the clamp can be assembled with the connecting plate as a whole or separated from the connecting plate, thus facilitating the quick assembly and disassembly of the clamp and the connecting plate. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional isometric view of the welding tensile testing fixture for the manifold of this utility model;

[0031] Figure 2 This is a front view of the welding tensile testing fixture for the manifold of this utility model;

[0032] Figure 3 This is a top view of the welding tensile testing fixture for the manifold of this utility model;

[0033] Figure 4 This is a schematic diagram of the welding tensile testing fixture for the manifold of this utility model holding an existing manifold;

[0034] Figure 5 This is a schematic diagram of the welding tensile testing fixture for the manifold of this utility model clamping another existing manifold;

[0035] Figure 6 This is a schematic diagram of the welding tensile testing fixture for the manifold of this utility model clamping another existing manifold.

[0036] Reference numerals: 10, connecting plate; 101, adjusting groove; 102, through hole; 20, gripper; 21, adjusting part; 211, horizontal bar; 212, vertical bar; 22, clamping part; 221, fixing plate; 222, bolt; 30, external connector; 31, small outer diameter section; 32, large outer diameter section; 100, collector plate. Detailed Implementation

[0037] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0038] Currently, the test fixtures for clamping manifolds on the market are all custom-made, non-standard products. For manifolds of different sizes, multiple sets of corresponding tensile testing fixtures are required, increasing the cost of testing the welding tensile strength of the manifolds. Therefore, if... Figure 1-3 As shown, this utility model provides a welding tensile testing fixture for a manifold, used to hold a manifold that has been welded. It includes a connecting plate 10 and several clamps 20. The connecting plate 10 has several adjustable grooves 101 spaced apart. Several clamps 20 are set on the connecting plate 10 and are embedded in the several adjustable grooves 101 in a corresponding manner to hold the manifold at different positions. The positions of the clamps 20 on the connecting plate 10 are adjustable.

[0039] When multiple grippers 20 are needed to hold the periphery of the collector plate, the grippers 20 are embedded in the adjustment groove 101, allowing them to move relative to the connecting plate 10 and change the position of each gripper 20 holding the collector plate. In this way, even with collector plates of different sizes or shapes, each gripper 20 can be adjusted to the most suitable position for the collector plate, ensuring a stable connection between the test fixture and the collector plate.

[0040] The gripper 20 includes an adjustment part 21 and a clamping part 22. One end of the adjustment part 21 passes through the adjustment groove 101 and extends outward. The clamping part 22 is fixedly disposed at the end of the adjustment part 21 away from the connecting plate 10 and is used to clamp the collector plate.

[0041] The adjustment part 21 includes: a horizontal rod 211, which is slidably connected to the connecting plate 10, and one side of the horizontal rod 211 abuts against the surface of the connecting plate 10 on both sides of the adjustment groove 10;

[0042] A vertical rod 212 has one end that passes through the adjustment groove 101 and is vertically fixed to the side where the horizontal rod 211 abuts against the connecting plate 10. The other end of the vertical rod 212 away from the horizontal rod 211 is provided with a clamping part 22.

[0043] When the gripper 20 moves relative to the connecting plate 10, the horizontal rod 211 moves synchronously relative to the surface of the connecting plate 10, and the vertical rod 212 slides inside the adjustment groove 101, so as to achieve the purpose of the gripper 20 moving relative to the connecting plate 10. The gripper 20 can be adjusted according to different sizes of the collector plate.

[0044] The clamping part 22 includes two fixing plates 221 and at least one bolt 222. The two fixing plates 221 are parallel to each other and spaced apart. One end of the two fixing plates is fixedly connected to the end of the vertical rod 212 away from the horizontal rod 211. The other end of the two fixing plates 221 extends away from the vertical rod, and a clamping space is formed between the two fixing plates 211. At least one bolt 222 is provided on the fixing plate 221 and moves along the axial direction of the connecting plate 10 to abut against the collecting plate between the two fixing plates.

[0045] A clamping space is formed by two fixing plates 221, and the collector plate located in the clamping space can be stably fixed by the bolts 222 moving within the clamping space. The fixing plates 221 are perpendicularly connected to the vertical rod 212. In this way, the fixing plates 221 can horizontally support the collector plate, and the bolts 222 can vertically and stably fix the collector plate by moving along the axial direction of the connecting plate 10.

[0046] The bolt 222 is implemented as a single bolt, which can be threaded onto either of the fixing plates 221. Specifically, the bolt 222 is threaded onto the fixing plate 221 closest to the connecting plate 10. In this way, when the collector plate extends into the clamping space, the lower end face of the collector plate directly contacts the fixing plate 221. Then, by rotating the bolt 222 from top to bottom, the bolt 222 contacts the upper end face of the collector plate, thereby stably fixing the collector plate between the two fixing plates 211.

[0047] There are two bolts 222, which are symmetrically arranged on the two fixing plates 221. For cases where the collector plate is relatively thin, symmetrical bolts 222 can be set on the two fixing plates 221. By moving the two bolts 222 closer to each other, it can be ensured that the bolts 222 can stably fix the collector plate inside the clamping space.

[0048] Several adjustment grooves 101 extend away from the center of the connecting plate 10 and penetrate the outer edge of the connecting plate 10. The adjustment grooves 101 extend through the outer edge of the connecting plate 10, so that the adjustment part 21 can slide directly outward from the connecting plate 10, or the adjustment part 21 can slide directly onto the connecting plate 10 from the outside. In this way, the clamp 20 and the connecting plate 10 can be easily disassembled and assembled, and the clamp 20 and the connecting plate 10 can be quickly disassembled and assembled.

[0049] Several adjusting grooves 101 are distributed at equal intervals relative to the central axis of the connecting plate 10.

[0050] The number of adjustment grooves 101 and clamps 20 is eight. Eight adjustment grooves 101 are provided on the connecting plate 10, and the adjustment grooves 101 are evenly distributed around the central axis of the connecting plate 10. This design of a large number of clamps can ensure that the connecting plate 10 can adapt to the collector plate of different shapes, and when the shape of the collector plate is irregular, the connecting plate 10 can also ensure that the collector plate is uniformly stressed as a whole by means of multiple clamps 20.

[0051] by Figure 1-3 For example, the connecting plate 10 is shown to have eight adjustment slots 101 and grippers 20. However, the number of adjustment slots and grippers can be set to more, such as ten, twelve or more, depending on actual needs. Here, eight grippers are used as an example; other numbers will not be described. In addition, in this embodiment, the number of adjustment slots 101 and grippers 20 is only used to illustrate the distribution. The number of adjustment slots 101 and grippers 20 is not considered a limitation on the technical solution. In actual use, the required number can be adjusted as needed.

[0052] like Figure 4 The image shows the effect of welding a circular manifold 100. The manifold 100 has five weld lines, which radiate outwards from the center. For this manifold 100, the five clamps 20 can be used in this test fixture according to… Figure 3 The direction indicated by the middle arrow can be used to fix and clamp the periphery of the collector plate 100.

[0053] like Figure 5 The image shows the effect of welding another rectangular manifold 100. The weld beads of this manifold 100 are mainly concentrated in the center of the manifold 100 and roughly form a rectangle. The short side has a concave profile. Therefore, for this manifold 100, the six jaws 20 are used in this test fixture according to... Figure 4 The direction of the middle arrow can fix the apex and the middle of the long side of the collector plate 100.

[0054] like Figure 6The image shown illustrates the welded result of another irregularly shaped manifold 100. While the manifold 100 has an irregular shape, the six clamps 20 can be positioned according to the gaps between the weld beads in the manifold 100 using this test fixture. Figure 5 The direction of the middle arrow can be used to fix and clamp the periphery of the collector plate 100.

[0055] The welding tensile test fixture for the manifold of this utility model also includes an external connector 30, which is located at the center of the connecting plate 10 and is used to connect an external pulling device and the connecting plate 10.

[0056] A through hole 102 is provided in the center of the connecting plate 10. The external connector 30 includes a small outer diameter section 31. One end of the small outer diameter section 31 passes through the through hole 102 and is connected to an external pulling device.

[0057] The large outer diameter section 32 has a diameter larger than that of the small outer diameter section 31 and the through hole 102. The large outer diameter section 32 is connected to the other end of the small outer diameter section 31 away from the external pulling device and abuts against the surface of the connecting plate 10.

[0058] Since the external connector 30 is pulled upward by the external towing device during use, the small outer diameter section 31 passes upward through the connecting plate 10 and connects to the external towing device, while the large outer diameter section 32 is supported on the lower end face of the connecting plate 10. The structure of the external connector 30 and the connecting plate 10 is simple and stable.

[0059] Specifically, the small outer diameter section 31 is clamped by a hydraulic clamp, and a vertical upward traction force is applied to the test clamp at a constant rate (usually 5-50 mm / min). During the entire tensile test, the traction force of the hydraulic equipment is continuously collected in real time by a high-precision sensor. When the force value collected by the sensor drops by ≥30% of the peak force, it is determined that the welding area of ​​the manifold is completely failed, and the final welding tensile force data is obtained.

[0060] In addition, during the tensile test, the upward traction force of the hydraulic clamp is always perpendicular to the plane where the collector plate and the connecting plate 10 are located.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manifold welding tensile testing fixture, used to hold a manifold that has been welded, characterized in that, include: The connecting plate (10) has several adjustment slots (101) spaced apart. Several grippers (20) are set on the connecting plate (10) and are embedded in the several adjusting grooves (101) in a corresponding manner to hold the collector plate at different positions; The positions of the plurality of grippers (20) on the connecting disk (10) are adjustable.

2. The manifold welding tensile testing fixture as described in claim 1, characterized in that: The gripper (20) includes: An adjustment part (21) is slidably connected to the connecting plate (10), and one end of the adjustment part (21) passes through the adjustment groove (101) and extends outward; The clamping part (22) is fixedly disposed at the end of the adjusting part (21) away from the connecting plate (10) and is used to clamp the collector plate.

3. The manifold welding tensile testing fixture as described in claim 2, characterized in that: The adjustment unit (21) includes: A horizontal rod (211) is slidably connected to the connecting plate (10), and one side of the horizontal rod (211) abuts against the surface of the connecting plate (10) on both sides of the adjusting groove (10); A vertical rod (212) is provided at one end, which passes through the adjustment groove (101) and is vertically fixed to the side where the horizontal rod (211) and the connecting plate (10) abut against each other. A clamping part (22) is provided at the other end of the vertical rod (212) away from the horizontal rod (211).

4. The manifold welding tensile testing fixture as described in claim 3, characterized in that: The clamping part (22) includes: Two fixed plates (221) are arranged parallel to each other and spaced apart. One end of the two fixed plates is fixedly connected to the end of the vertical rod (212) away from the horizontal rod (211), and a clamping space is formed between the other ends of the two fixed plates (221). At least one bolt (222) is provided on the fixing plate (221) and moves along the axial direction of the connecting plate (10) to abut against the collection plate between the two fixing plates.

5. The manifold welding tensile testing fixture as described in claim 4, characterized in that: There is one bolt (222), which is threaded onto any one of the fixing plates (221).

6. The manifold welding tensile testing fixture as described in claim 4, characterized in that: There are two bolts (222), which are symmetrically arranged on the two fixing plates (221).

7. The manifold welding tensile testing fixture as described in claim 1, characterized in that: The plurality of adjustment grooves (101) extend in a direction away from the center of the connecting disk (10) and penetrate the outer edge of the connecting disk (10).

8. The manifold welding tensile testing fixture as described in claim 1, characterized in that: The plurality of adjustment grooves (101) are distributed at equal intervals relative to the central axis of the connecting plate (10).

9. The manifold welding tensile testing fixture as described in claim 1, characterized in that: It also includes an external connector (30), which is located at the center of the connecting plate (10) and is used to connect the external pulling device and the connecting plate (10).

10. The manifold welding tensile testing fixture as described in claim 9, characterized in that: A through hole (102) is formed in the center of the connecting plate (10), and the external connector (30) includes: Small outer diameter section (31), one end of which passes through the through hole (102) and is connected to an external pulling device; The large outer diameter section (32) has a diameter larger than that of the small outer diameter section (31) and the through hole (102). The large outer diameter section (32) is connected to the other end of the small outer diameter section (31) away from the external pulling device and abuts against the surface of the connecting plate (10).

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