Clamping device for testing

Abstract

The utility model relates to a clamping device for testing, which comprises a first clamping assembly, a second clamping assembly and a third clamping assembly, the first clamping assembly comprises a first clamping main body and a first clamping movable block, and a first clamping gap is formed between the first clamping movable block and the first clamping main body; the second clamping assembly is arranged on the lower side of the first clamping assembly; the second clamping assembly comprises a pair of second clamping parts, and the pair of second clamping parts are used for clamping the two ends of a connecting piece connected with the tab; each second clamping part comprises a second clamping main body and a second clamping movable block; and in the same second clamping part, a second clamping gap is formed between the second clamping movable block and the second clamping main body. In one embodiment of the utility model, the pair of second clamping gaps can respectively clamp the two ends of the connecting sheet, and the first clamping gap can clamp the tab, so that the connecting sheet does not need to be broken by 90 degrees, the tension measurement that the tension direction of the tab is vertical to the welding printing area can still be carried out, the angle of the vertical measurement can be ensured, and the reliability of the vertical measurement can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a clamping device for testing. Background Art

[0002] In the production process of lithium batteries, welding reliability is one of the indicators that must be guaranteed. The reliability of ultrasonic welding of the tabs is often characterized by welding appearance, welding residue, and welding tension. Among them, welding tension is the easiest indicator to quantify, and the scientificity and reliability of tension measurement need to be guaranteed. At present, there are two main ways to measure the tab tension: perpendicular measurement and parallel measurement of the tension direction and the weld print area. Parallel measurement is easy to clamp, but it is different from the actual force direction of the tab in the battery, and the measurement result will be larger than the actual force, while vertical measurement is more in line with the actual force of the tab in the battery.

[0003] However, the existing vertical measurement clamping device requires the connecting piece to be bent 90° before clamping, which easily leads to the inability to accurately guarantee the vertical measurement angle, reducing the reliability of the vertical measurement, and there is room for improvement. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art described above, according to one aspect of the utility model, a test clamping device is provided to ensure the angle of vertical measurement and improve the reliability of vertical measurement.

[0005] A test clamping device, comprising:

[0006] A first clamping assembly, used for clamping the pole lug, comprises a first clamping body and a first clamping movable block, a first clamping gap is formed between the first clamping movable block and the first clamping body, and the spacing of the first clamping gap along the horizontal direction is adjustable;

[0007] A second clamping assembly is arranged on the lower side of the first clamping assembly; the second clamping assembly includes a pair of second clamping parts, and the pair of second clamping parts are used to clamp the two ends of the connecting piece connected to the pole ear; each of the second clamping parts includes a second clamping body and a second clamping movable block; in the same second clamping part, a second clamping gap is formed between the second clamping movable block and the second clamping body, and the second clamping gap is adjustable along the vertical spacing.

[0008] In an embodiment of the present invention, a distance between a pair of the second clamping parts along the horizontal direction is adjustable.

[0009] In one embodiment of the utility model, the first clamping body comprises a pair of first clamping plates arranged in a horizontal direction and spaced apart from each other, and the first clamping movable block is arranged between the pair of first clamping plates and forms the first clamping gap with one of the first clamping plates;

[0010] The first clamping assembly further includes a first driving screw, one end of which is rotatably connected to the first clamping movable block, and the first driving screw is threadedly connected to another of the first clamping plates.

[0011] In an embodiment of the present invention, a first connecting plate is provided between a pair of the first clamping plates; the first clamping body further comprises a first connecting shaft, and the first connecting shaft is connected to the first connecting plate.

[0012] In an embodiment of the present invention, at least one facing surface of the first clamping movable block and the first clamping plate is a serrated surface.

[0013] In one embodiment of the utility model, the first clamping movable block is provided with a first limiting rod, and the first limiting rod is slidably connected to the other first clamping plate along the horizontal direction;

[0014] There are two first limiting rods, and the two first limiting rods are arranged at two opposite corners of the first clamping movable block in a one-to-one correspondence.

[0015] In one embodiment of the utility model, in one of the second clamping components, the second clamping body includes a pair of second clamping plates spaced apart from each other vertically, and the second clamping movable block is disposed between the pair of second clamping plates and forms the second clamping gap with one of the second clamping plates;

[0016] The second clamping assembly further comprises a second driving screw, one end of which is rotatably connected to the second clamping movable block, and the second driving screw is threadedly connected to another second clamping plate.

[0017] In an embodiment of the present invention, at least one facing surface of the second clamping movable block and the second clamping plate is a serrated surface.

[0018] In one embodiment of the utility model, the second clamping movable block is provided with a second limiting rod, and the second limiting rod is vertically slidably connected to another second clamping plate;

[0019] There are two second limiting rods, and the two second limiting rods are arranged at two opposite corners of the second clamping movable block in a one-to-one correspondence.

[0020] In an embodiment of the present invention, the second clamping assembly further comprises a base, a top of the base is horizontally recessed with an assembly groove, and a pair of the second clamping bodies are connected in the assembly groove via a locking member.

[0021] In summary, the test clamping device provided by the utility model has the following technical effects:

[0022] The inventor of the utility model found that the existing clamping device for vertical measurement needs to bend the connecting piece 90° before clamping, which easily leads to the inability to accurately guarantee the angle of vertical measurement and reduces the reliability of vertical measurement. Based on this, in one embodiment of the utility model provided by the inventor, by setting a first clamping assembly, the first clamping assembly includes a first clamping body and a first clamping movable block, and a first clamping gap for clamping the pole ear is formed between the first clamping body and the first clamping movable block to achieve clamping of the pole ear; at the same time, by setting a second clamping assembly, the second clamping assembly includes a pair of second clamping parts, the second clamping parts include a second clamping body and a second clamping movable block, and a second clamping gap for clamping the connecting piece connected to the pole ear is formed between the second clamping body and the second clamping movable block, so that the pair of second clamping gaps can clamp the two ends of the connecting piece respectively, and the first clamping gap can clamp the pole ear, so there is no need to bend the connecting piece 90°, and the tension measurement of the pole ear can still be performed with the tension direction of the pole ear perpendicular to the welding stamp area, which can ensure the angle of vertical measurement and improve the reliability of vertical measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the test clamping device according to an embodiment of the utility model;

[0024] Figure 2 This is a front view of the test clamping device of an embodiment of the utility model;

[0025] Figures: 11-first clamping body, 111-first clamping plate, 112-first connecting plate, 12-first clamping movable block, 13-first clamping gap, 14-first driving screw, 15-first connecting shaft, 16-first limiting rod, 21-second clamping body, 211-second clamping plate, 22-second clamping movable block, 23-second clamping gap, 24-second driving screw, 25-second limiting rod, 3-base, 31-assembly groove, 32-locking piece. DETAILED DESCRIPTION

[0026] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] The embodiment of the utility model discloses a clamping device for testing. It should be noted that in the embodiment shown in the following figures, the horizontal direction is the X direction and the vertical direction is the Z direction.

[0030] See also Figure 1 and Figure 2 In an embodiment of the utility model, the test clamping device includes a first clamping assembly and a second clamping assembly, the first clamping assembly is used to clamp the pole ear, the first clamping assembly includes a first clamping body 11 and a first clamping movable block 12, a first clamping gap 13 is formed between the first clamping movable block 12 and the first clamping body 11, and the spacing of the first clamping gap 13 along the horizontal direction is adjustable; the second clamping assembly is arranged on the lower side of the first clamping assembly; the second clamping assembly includes a pair of second clamping parts, and the pair of second clamping parts are used to clamp the two ends of the connecting piece connected to the pole ear; each second clamping part includes a second clamping body 21 and a second clamping movable block 22; in the same second clamping part, a second clamping gap 23 is formed between the second clamping movable block 22 and the second clamping body 21, and the spacing of the second clamping gap 23 along the vertical direction is adjustable.

[0031] The inventor of the utility model found that the existing vertical measurement clamping device requires the connecting piece to be bent 90 degrees before clamping, which easily leads to the inability to accurately guarantee the vertical measurement angle and reduces the reliability of the vertical measurement. Based on this, in one embodiment of the utility model provided by the inventor, a first clamping assembly is set, the first clamping assembly includes a first clamping body 11 and a first clamping movable block 12, and a first clamping gap 13 for clamping the pole ear is formed between the first clamping body 11 and the first clamping movable block 12, so as to achieve clamping of the pole ear; at the same time, a second clamping assembly is set, the second clamping assembly includes a pair of second clamping parts, the second clamping parts include a second clamping body 21 and a second clamping movable block 22, and a second clamping gap 23 for clamping a connecting piece connected to the pole ear is formed between the second clamping body 21 and the second clamping movable block 22, so that a pair of second clamping gaps 23 can clamp the two ends of the connecting piece respectively, and the first clamping gap 13 can clamp the pole ear, so there is no need to fold the connecting piece 90°, and the tension measurement of the pole ear in a direction perpendicular to the weld print area can still be performed, which can ensure the angle of vertical measurement and improve the reliability of vertical measurement.

[0032] See also Figure 1 and Figure 2In one embodiment of the utility model, the first clamping body 11 includes a pair of first clamping plates 111 arranged in a horizontal direction facing each other at intervals, and the first clamping movable block 12 is arranged between the pair of first clamping plates 111 and forms a first clamping gap 13 with one of the first clamping plates 111; the first clamping assembly also includes a first driving screw 14, one end of the first driving screw 14 is rotatably connected to the first clamping movable block 12, and the first driving screw 14 is threadedly connected to the other first clamping plate 111. In this arrangement, the staff can rotate the first driving screw 14, and the first clamping movable block 12 and one of the first clamping plates 111 will move closer to or farther from each other to achieve the clamping of the tab.

[0033] In one embodiment, the first driving screw rod 14 can be specifically a bolt, which has a simple structure and is easy to manufacture, thereby reducing production difficulty and cost.

[0034] See also Figure 1 and Figure 2 In one embodiment of the utility model, a first connecting plate 112 is provided between a pair of first clamping plates 111; the first clamping body 11 further includes a first connecting shaft 15, and the first connecting shaft 15 is connected to the first connecting plate 112. With such a configuration, the first clamping assembly as a whole can rotate around the first connecting shaft 15 as the center, and can achieve tensile force measurement in different directions of the tab.

[0035] See also Figure 1 and Figure 2 In one embodiment of the present invention, at least one of the facing surfaces of the first clamping movable block 12 and the first clamping plate 111 is a serrated surface. This arrangement can increase the clamping force on the tab to prevent the tab from loosening during the tension measurement process.

[0036] In one embodiment, the facing surfaces of the first clamping movable block 12 and the first clamping plate 111 are both serrated surfaces. With such a configuration, the two facing surfaces can mesh with each other, further increasing the clamping force on the tab.

[0037] See also Figure 1 and Figure 2 In one embodiment of the utility model, the first clamping movable block 12 is provided with a first limiting rod 16, and the first limiting rod 16 is slidably connected to another first clamping plate 111 along the horizontal direction. In this way, the first limiting rod 16 can better prevent the first clamping movable block 12 from shaking when the first driving screw 14 rotates, so as to improve the clamping stability of the first clamping movable block 12.

[0038] See also Figure 1 and Figure 2In one embodiment of the utility model, two first limiting rods 16 are provided, and the two first limiting rods 16 are arranged one by one at two diagonal corners of the first clamping movable block 12. Such an arrangement can make the force between the first clamping movable block 12 and the other first clamping plate 111 more uniform, and the structural layout is more reasonable, so as to improve the smoothness and stability of sliding.

[0039] See also Figure 1 and Figure 2 In one embodiment of the utility model, in a second clamping component, the second clamping body 21 is provided with a pair of second clamping plates 211 spaced apart vertically facing each other, and the second clamping movable block 22 is provided between the pair of second clamping plates 211 and forms a second clamping gap 23 with one of the second clamping plates 211; the second clamping assembly also includes a second driving screw 24, one end of the second driving screw 24 is rotatably connected to the second clamping movable block 22, and the second driving screw 24 is threadedly connected to the other second clamping plate 211. In this arrangement, the staff can rotate the second driving screw 24, and the second clamping movable block 22 and one of the second clamping plates 211 will move closer to or farther from each other, so as to achieve the clamping of the end of the connecting piece.

[0040] In one embodiment, the second driving screw rod 24 can be specifically a bolt, which has a simple structure and is easy to manufacture, thereby reducing production difficulty and cost.

[0041] See also Figure 1 and Figure 2 In one embodiment of the utility model, at least one of the facing surfaces of the second clamping movable block 22 and the second clamping plate 211 is a serrated surface. Such a configuration can increase the clamping force on the end of the connecting piece to prevent the connecting piece from loosening during the tension measurement process.

[0042] In one embodiment, the facing surfaces of the second clamping movable block 22 and the second clamping plate 211 are both serrated surfaces. In this way, the two facing surfaces can mesh with each other, further increasing the clamping force on the tab.

[0043] See also Figure 1 and Figure 2 In one embodiment of the utility model, the second clamping movable block 22 is provided with a second limiting rod 25, and the second limiting rod 25 is vertically slidably connected to another second clamping plate 211. In this way, the second limiting rod 25 can better prevent the second clamping movable block 22 from shaking when the second driving screw 24 rotates, so as to improve the clamping stability of the second clamping movable block 22.

[0044] See also Figure 1 and Figure 2In one embodiment of the utility model, two second limiting rods 25 are provided, and the two second limiting rods 25 are arranged one by one at two diagonal corners of the second clamping movable block 22. Such an arrangement can make the force between the second clamping movable block 22 and the other second clamping plate 211 more uniform, and the structural layout is more reasonable, so as to improve the smoothness and stability of sliding.

[0045] See also Figure 1 and Figure 2 In one embodiment of the utility model, the distance between the pair of second clamping parts in the horizontal direction is adjustable. This arrangement can be used for various types of connecting pieces, thereby improving the practicality of the test clamping device.

[0046] See also Figure 1 and Figure 2 In one embodiment of the utility model, the second clamping assembly further includes a base 3, the top of the base 3 is recessed with a mounting groove 31 in the horizontal direction, and a pair of second clamping bodies 21 are connected in the mounting groove 31 through a locking member 32. With such a configuration, when the spacing between the pair of second clamping bodies 21 needs to be adjusted, the locking member 32 can be loosened or locked to adjust the spacing between the pair of second clamping bodies 21, so as to be applicable to various types of connecting sheets.

[0047] In one embodiment, the locking member 32 may be specifically a bolt, so the locking member 32 may be loosened or tightened to adjust the distance between a pair of second clamping bodies 21 , which has a simple structure and is easy to manufacture, thereby reducing manufacturing difficulty and cost.

[0048] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A test clamping device, characterized in that: include: A first clamping assembly, used for clamping the pole lug, comprising a first clamping body (11) and a first clamping movable block (12), a first clamping gap (13) being formed between the first clamping movable block (12) and the first clamping body (11), and a spacing of the first clamping gap (13) in a horizontal direction being adjustable; A second clamping assembly is arranged at the lower side of the first clamping assembly; the second clamping assembly comprises a pair of second clamping parts, the pair of second clamping parts are used to clamp the two ends of the connecting piece connected to the pole ear; each of the second clamping parts comprises a second clamping body (21) and a second clamping movable block (22); in the same second clamping part, a second clamping gap (23) is formed between the second clamping movable block (22) and the second clamping body (21), and the second clamping gap (23) is adjustable in vertical spacing.

2. A test clamping device according to claim 1, characterized in that: The distance between the pair of second clamping parts in the horizontal direction is adjustable.

3. A test clamping device according to claim 1, characterized in that: The first clamping body (11) comprises a pair of first clamping plates (111) arranged in a horizontal direction and spaced apart from each other, and the first clamping movable block (12) is arranged between the pair of first clamping plates (111) and forms the first clamping gap (13) with one of the first clamping plates (111); The first clamping assembly further comprises a first driving screw (14), one end of which is rotatably connected to the first clamping movable block (12), and the first driving screw (14) is threadedly connected to another first clamping plate (111).

4. A test clamping device according to claim 3, characterized in that: A first connecting plate (112) is provided between the pair of the first clamping plates (111); the first clamping body (11) further comprises a first connecting shaft (15), and the first connecting shaft (15) is connected to the first connecting plate (112).

5. A test clamping device according to claim 3 or 4, characterized in that: At least one facing surface of the first clamping movable block (12) and the first clamping plate (111) is a serrated surface.

6. A test clamping device according to claim 3 or 4, characterized in that: The first clamping movable block (12) is provided with a first limiting rod (16), and the first limiting rod (16) is slidably connected to another first clamping plate (111) in a horizontal direction; Two first limiting rods (16) are provided, and the two first limiting rods (16) are arranged at two opposite corners of the first clamping movable block (12) in a one-to-one correspondence.

7. A test clamping device according to claim 1, characterized in that: In a second clamping component, the second clamping body (21) has a pair of second clamping plates (211) arranged vertically and spaced apart from each other, and the second clamping movable block (22) is arranged between the pair of second clamping plates (211) and forms the second clamping gap (23) with one of the second clamping plates (211); The second clamping assembly further comprises a second driving screw (24), one end of which is rotatably connected to the second clamping movable block (22), and the second driving screw (24) is threadedly connected to another second clamping plate (211).

8. A test clamping device according to claim 7, characterized in that: At least one facing surface of the second clamping movable block (22) and the second clamping plate (211) is a serrated surface.

9. A test clamping device according to claim 7 or 8, characterized in that: The second clamping movable block (22) is provided with a second limiting rod (25), and the second limiting rod (25) is vertically slidably connected to another second clamping plate (211); Two second limiting rods (25) are provided, and the two second limiting rods (25) are arranged at two opposite corners of the second clamping movable block (22) in a one-to-one correspondence.

10. A test clamping device according to any one of claims 1-4, 7, and 8, characterized in that: The second clamping assembly further comprises a base (3), the top of the base (3) being concavely provided with an assembly groove (31) in a horizontal direction, and a pair of the second clamping bodies (21) being connected in the assembly groove (31) via a locking member (32).

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