Module binding piece supporting and tightening tool

Abstract

The utility model relates to the technical field of battery production detection tools, and discloses a module binding piece supporting tool which comprises a first connecting rod, a second connecting rod, a distance adjusting piece, a first supporting part and a second supporting part, the first supporting part and the second supporting part are used for supporting a binding piece, and a first threaded hole and a second threaded hole with opposite threads are formed in the two ends of the distance adjusting piece respectively. One end of the first connecting rod is provided with threads and is in threaded connection with the first threaded hole, the other end of the first connecting rod is fixedly connected with the first supporting part, one end of the second connecting rod is provided with threads and is in threaded connection with the second threaded hole, and the other end of the second connecting rod is fixedly connected with the second supporting part. And the method is suitable for sampling inspection and temporary detection.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production detection tools, and particularly relates to a tightening tool for module binding parts. Background Art

[0002] In the related art, as the most basic cell module structural part, the function of the module binding part is to pre-tighten and fasten the grouped cells, and to resist the expansion force between the cells during the charge and discharge process after the cells are grouped. The actual production length and tensile strength of the module binding part are the key influencing factors for the assembly of the grouped cells.

[0003] However, due to the relatively thin thickness of the base material of the module binding part, it is easy to have deformations in the length and width directions. And because of the forming characteristics of its closed rectangle, it is difficult to accurately inspect and measure the length dimension of the binding part. At the same time, a corresponding special fixture must be used to measure its tensile strength. The test tools in the related art are large in volume and high in cost, and are not suitable for non-mass production inspection, procurement inspection, temporary inspection, and inspection in combination with other inspection tools. Nor can they be placed on the table of a small three-coordinate measuring instrument for flexible use. Summary of the Utility Model

[0004] In view of this, the utility model provides a tightening tool for module binding parts, which is small in volume, convenient to operate, can quickly install the binding parts, and is suitable for sampling inspection and temporary detection.

[0005] The utility model provides a tightening tool for module binding parts, including: a first connecting rod, a second connecting rod, a distance adjusting member, and a first supporting portion and a second supporting portion for supporting the binding part. Threaded holes with opposite threads, namely a first threaded hole and a second threaded hole, are respectively arranged at both ends of the distance adjusting member. One end of the first connecting rod is provided with a thread and is screwed with the first threaded hole, and the other end is fixedly connected with the first supporting portion. One end of the second connecting rod is provided with a thread and is screwed with the second threaded hole, and the other end is fixedly connected with the second supporting portion.

[0006] Beneficial effects: By rotating the distance adjusting member, the first connecting rod and the second connecting rod can be driven to move simultaneously and in opposite directions, driving the first supporting portion and the second supporting portion to move away from each other, increasing the distance between the first supporting portion and the second supporting portion, tightening the binding part to fix it, and using a vernier caliper or a three-coordinate detector to measure it. After the measurement is completed, rotate the distance adjusting component in the reverse direction, drive the first connecting rod and the second connecting rod to move towards each other, shorten the distance between the first supporting portion and the second supporting portion, and disassemble the binding part. When rotating the distance adjusting member, the distance between the first supporting portion and the second supporting portion can be quickly adjusted, which is convenient for quickly installing the binding part and is suitable for sampling inspection and temporary detection.

[0007] In an alternative embodiment, it further includes a pneumatic spring. The cylinder of the pneumatic spring is fixed on the first support portion, and the end of the piston rod of the pneumatic spring is fixedly connected to the end of the first link away from the thread.

[0008] Advantageous effects: The pneumatic spring can provide a supporting force to the first support portion and the second support portion, and can, during detection, enable the binding member to independently provide a continuous high load without applying external power, and tighten the binding member; the strength of tightening the binding member by rotating the distance adjusting member is relatively large, and the pneumatic spring has a buffering effect to prevent damage to the binding member.

[0009] In an alternative embodiment, the first support portion includes a first connecting plate and a first support assembly. The cylinder of the pneumatic spring is fixedly connected to one side of the first connecting plate; the first support assembly includes a first connecting member and a first tightening member. The first connecting member is fixed on the side of the first connecting plate away from the pneumatic spring, and the first tightening member is connected to the first connecting member for tightening the binding member.

[0010] In an alternative embodiment, the first connecting member is a first hinge seat, and the first tightening member includes two first tightening rods. The first hinge seat is fixed on the first connecting plate. The two first tightening rods are symmetrically arranged and one end of each is hinged to the first hinge seat, and the other end is used for tightening the binding member. The maximum included angle between the two first tightening rods is 180°.

[0011] Advantageous effects: One end of each of the two first tightening rods is hinged to the first hinge seat, which is convenient for storage; when tightening the binding member, the two first tightening rods are separated by a certain angle to tighten the binding member, which is convenient for measuring it; the included angle between the two first tightening rods cannot exceed 180°, so that the binding member is continuously tightened and the binding member is prevented from touching the first hinge seat and being damaged.

[0012] In an alternative embodiment, the first tightening member further includes two first limit blocks, which are respectively fixed on the two first tightening rods, and both of the two first limit blocks can abut against the first hinge seat for limiting the rotation angle of the two first tightening rods.

[0013] Advantageous effects: The two limit blocks can limit the rotation angle of the two first tightening rods, and the structure is simple; it does not affect storage.

[0014] In an alternative embodiment, the first tightening member further includes two first pulleys, which are respectively rotatably connected to the ends of the first tightening rods away from the first hinge seat, and the two first pulleys are used for rolling abutment with the binding member.

[0015] Advantageous effects: The two first pulleys can facilitate full contact with the binding member at the corner to avoid damage to the binding member; and it is convenient to move the binding member and adjust the installation position.

[0016] In an alternative embodiment, an annular limiting groove is provided on the surface of the first pulley.

[0017] Beneficial effect: The binding member is placed in the annular limiting groove to prevent the binding member from detaching from the first pulley, which has a limiting function.

[0018] In an alternative embodiment, the first connecting plate is an L-shaped plate. The cylinder of the pneumatic spring is fixedly connected to one side of the vertical plate of the first connecting plate, and the first hinge seat is fixed to the other side of the vertical plate of the first connecting plate. A plurality of connection holes for connecting to the workbench are provided on the horizontal plate of the first connecting plate.

[0019] Beneficial effect: The vertical plate of the first connecting plate is used to connect the pneumatic spring and the first hinge seat, and the horizontal plate is used to be fixed on the workbench, with a simple and reasonable structure.

[0020] In an alternative embodiment, the second supporting portion includes a second connecting plate and a second supporting assembly; the second supporting assembly includes a second connecting member and a second tightening member. The second connecting member is fixed to the side of the second connecting plate away from the second connecting rod, and the second tightening member is connected to the second connecting member for tightening the binding member.

[0021] Beneficial effect: The first supporting portion and the second supporting portion jointly tighten the binding member, making it more stable.

[0022] In an alternative embodiment, a pressure sensor is further included. The pressure sensor is provided with a fixed end and a detection end. The fixed end is fixed to the vertical plate of the first connecting plate, and the detection end is fixedly connected to the bottom of the first hinge seat.

[0023] The pressure sensor can measure the tensile force and tensile strength of the binding member while tightening the binding member, which is more convenient. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of a module binding member tightening tooling according to an embodiment of the present invention;

[0026] Figure 2 For Figure 1 a partial enlarged schematic diagram of A in

[0027] Figure 3The front view of a tightening tool for a module binding part according to an embodiment of the present utility model;

[0028] Figure 4 is Figure 3 a partially enlarged schematic view of B in;

[0029] Figure 5 The cross-sectional view of a pneumatic spring in a tightening tool for a module binding part according to an embodiment of the present utility model.

[0030] Explanation of reference numerals:

[0031] 1. First connecting rod; 2. Second connecting rod; 3. Distance adjusting part; 4. First supporting part; 41. First connecting plate; 411. Connecting hole; 42. First supporting component; 421. First connecting piece; 422. First tightening piece; 4221. First tightening rod; 4222. First limiting block; 4223. First pulley; 423. First fixing block; 5. Second supporting part; 51. Second connecting plate; 511. Fixing hole; 52. Second tightening rod; 53. Second fixing block; 54. Second connecting piece; 55. Second pulley; 6. Pneumatic spring; 61. Cylinder barrel; 62. Piston rod; 63. Piston; 64. Bottom seal of air rod; 65. Top seal of air rod; 66. Rod chamber; 67. Rodless chamber; 68. Vent hole; 69. Screw rod; 7. Pressure sensor; 71. Fixed end; 72. Detection end; 8. Binding part; 9. Pin shaft. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] The binding part mentioned in the present utility model is mainly used to restrain the module, pre-tighten and fasten the battery cells into a group, and resist the expansion force between the battery cells during the charge and discharge process after the battery cells are grouped. The binding part can be a steel belt or a binding belt made of other materials.

[0034] Next, in combination with Figures 1 to 5 , the embodiments of the present utility model will be described.

[0035] According to an embodiment of the present utility model, there is provided a tightening tool for a module binding member, including: a first connecting rod 1, a second connecting rod 2, a distance adjusting member 3, and a first supporting portion 4 and a second supporting portion 5 for supporting the binding member 8. Threaded holes with opposite threads are respectively provided at both ends of the distance adjusting member 3. One end of the first connecting rod 1 is threaded and screwed into the first threaded hole, and the other end is fixedly connected to the first supporting portion 4. One end of the second connecting rod 2 is threaded and screwed into the second threaded hole, and the other end is fixedly connected to the second supporting portion 5.

[0036] Rotating the distance adjusting member 3 can drive the first connecting rod 1 and the second connecting rod 2 to move simultaneously, and move in opposite directions at the same time, driving the first supporting portion 4 and the second supporting portion 5 to move away from each other, increasing the distance between the first supporting portion 4 and the second supporting portion 5, tightening the binding member 8 to fix it. Use a vernier caliper or a three-coordinate measuring instrument to measure it. After the measurement is completed, rotate the distance adjusting component in the reverse direction, driving the first connecting rod 1 and the second connecting rod 2 to move towards each other, shortening the distance between the first supporting portion 4 and the second supporting portion 5, and disassembling the binding member 8. When rotating the distance adjusting member 3, the distance between the first supporting portion 4 and the second supporting portion 5 can be quickly adjusted, facilitating the quick installation of the binding member 8, and being applicable to the situations of spot checks and temporary detections.

[0037] In some embodiments, the distance adjusting member 3 is a spline wrench, and threaded holes with opposite threads are provided at both ends of the spline wrench.

[0038] In one embodiment, it further includes a pneumatic spring 6. The cylinder 61 of the pneumatic spring 6 is fixed on the first supporting portion 4, and the end of the piston rod 62 of the pneumatic spring 6 is fixedly connected to the end of the first connecting rod 1 away from the thread. The pneumatic spring 6 can provide a supporting force to the first supporting portion 4 and the second supporting portion 5, and can, during the detection, enable the binding member 8 to independently provide continuous high loads without applying external power, tightening the binding member 8; the strength of tightening the binding member 8 by rotating the distance adjusting member 3 is relatively large, and the pneumatic spring 6 has a buffering effect to prevent damage to the binding member 8.

[0039] In some embodiments, the pneumatic spring 6 includes a cylinder 61, a piston rod 62, a piston 63, a bottom seal 64 of the pneumatic rod, and a top seal 65 of the pneumatic rod. The bottom seal 64 and the top seal 65 of the pneumatic rod are respectively and sealingly installed at the bottom and the top of the cylinder 61. The piston 63 is sealingly and slidably connected inside the cylinder 61, dividing the cylinder 61 into a rod chamber 66 and a rodless chamber 67. One end of the piston rod 62 penetrates into the cylinder 61 from the top seal 65 of the pneumatic rod and is fixedly connected to the piston 63, and the other end is fixedly connected to the end of the first connecting rod 1 away from the thread. A vent hole 68 communicating the rod chamber 66 and the rodless chamber 67 is formed in the piston 63. The gas pressures in the rod chamber 66 and the rodless chamber 67 are kept consistent under the action of the vent hole 68, but the pressure acting areas on both sides of the piston 63 are different. According to the formula F = P×S, a critical force is required to push the piston 63. Compressed air can produce a buffering effect, and the pneumatic spring 6 can continuously tighten the binding member 8.

[0040] In a specific embodiment, the critical force of the pneumatic spring 6 is regulated according to different gas pressures filled in the pneumatic spring 6 and by selecting piston rods 62 with different diameters.

[0041] In a specific embodiment, a pneumatic spring 6 with a kilogram-force of 500 - 2000 kg is selected.

[0042] In one embodiment, the first support portion 4 includes a first connecting plate 41 and a first support assembly 42. The cylinder 61 of the pneumatic spring 6 is fixedly connected to one side of the first connecting plate 41; the first support assembly 42 includes a first connecting member 421 and a first tightening member 422. The first connecting member 421 is fixed to the side of the first connecting plate 41 away from the pneumatic spring 6, and the first tightening member 422 is connected to the first connecting member 421 for tightening the binding member 8.

[0043] In one embodiment, the first connecting member 421 is a first hinge seat. The first tightening member 422 includes two first tightening rods 4221. The first hinge seat is fixed on the first connecting plate 41. The two first tightening rods 4221 are symmetrically arranged and one end of each is hinged to the first hinge seat, and the other end is used for tightening the binding member 8. The maximum included angle between the two first tightening rods 4221 is 180°. One end of each of the two first tightening rods 4221 is hinged to the first hinge seat, which is convenient for storage; when tightening the binding member 8, the two first tightening rods 4221 are separated by a certain angle to tighten the binding member 8, which is convenient for measuring it; the included angle between the two first tightening rods 4221 cannot exceed 180°, so that the binding member 8 is continuously tightened and the binding member 8 is prevented from touching the first hinge seat and being damaged.

[0044] In some embodiments, both of the two first tightening rods 4221 are hinged to the first hinge seat through a pin shaft 9.

[0045] In one embodiment, the first tightening member 422 further includes two first limiting blocks 4222 which are respectively fixed on the two first tightening rods 4221. The two first limiting blocks 4222 can both abut against the first hinge seat to limit the rotation angle of the two first tightening rods 4221. The two limiting blocks can limit the rotation angle of the two first tightening rods 4221, with a simple structure and no impact on storage.

[0046] In one embodiment, the first tightening member 422 further includes two first pulleys 4223 which are correspondingly rotatably connected to one end of the first tightening rod 4221 far from the first hinge seat. The two first pulleys 4223 are used for rolling abutting against the binding member 8. The two first pulleys 4223 can facilitate full contact with the binding member 8 at the corner to avoid damaging the binding member 8, and also facilitate the movement of the binding member 8 to conveniently adjust the installation position.

[0047] In one embodiment, an annular limiting groove is provided on the surface of the first pulley 4223. The binding member 8 is placed in the annular limiting groove to prevent the binding member 8 from detaching from the first pulley 4223, which has a limiting effect.

[0048] In one embodiment, the first connecting plate 41 is an L-shaped plate. The cylinder 61 of the pneumatic spring 6 is fixedly connected to one side of the longitudinal plate of the first connecting plate 41, the first hinge seat is fixed to the other side of the longitudinal plate of the first connecting plate 41, and a plurality of connection holes 411 for connecting to the workbench are provided on the transverse plate of the first connecting plate 41. The longitudinal plate of the first connecting plate 41 is used for connecting the pneumatic spring 6 and the first hinge seat, and the transverse plate is used for fixing to the workbench, with a simple and reasonable structure. In the case of continuous propping and stretching of the binding member 8, it can be stably placed on any platform for measurement.

[0049] In some embodiments, a threaded hole is provided on the first fixing block 423, and a screw rod 69 is fixed to the bottom of the bottom seal 64 of the air rod. The screw rod 69 is screwed and fixed to the threaded hole of the first fixing block 423.

[0050] In one embodiment, the second support portion 5 includes a second connecting plate 51 and a second support assembly. The second support assembly includes a second connecting member 54 and a second tightening member. The second connecting member 54 is fixed to one side of the second connecting plate 51 far from the second connecting rod 2, and the second tightening member is connected to the second connecting member 54 for tightening the binding member 8.

[0051] The first support portion 4 and the second support portion 5 jointly tighten the binding member 8, making it more stable.

[0052] In some embodiments, the second connecting member 54 is a second hinge seat. The second tightening member includes two second tightening rods 52. The second hinge seat is fixed on the second connecting plate 51. The two second tightening rods 52 are symmetrically arranged and one ends of both are hinged to the second hinge seat, and the other ends are used to tighten the binding member 8. The maximum included angle between the two second tightening rods 52 is 180°.

[0053] In some embodiments, the second tightening member further includes two second limiting blocks. The two second limiting blocks are respectively fixed on the two second tightening rods 52. The two second limiting blocks can both abut against the second hinge seat to limit the rotation angle of the two second tightening rods 52.

[0054] In some embodiments, the second tightening member further includes two second pulleys 55. The two second pulleys 55 are correspondingly rotatably connected to one ends of the second tightening rods 52 far from the second hinge seat. The two second pulleys 55 are used to rollingly abut against the binding member 8.

[0055] In some embodiments, an annular mounting groove is provided on the surface of the second pulley 55.

[0056] In some embodiments, the second connecting plate 51 is an L-shaped plate. The second connecting rod 2 is fixedly connected to one side of the longitudinal plate of the second connecting plate 51. The second hinge seat is fixed to the other side of the longitudinal plate of the second connecting plate 51. A plurality of fixing holes 511 for connecting to the workbench are provided on the transverse plate of the second connecting plate 51.

[0057] In some embodiments, a second fixing block 53 is fixed on the longitudinal plate of the second connecting plate 51. A threaded hole is provided on the second fixing block 53. One end of the second connecting rod 2 far from the distance adjusting member 3 is provided with a thread. The second connecting rod 2 is screwed and fixed to the second fixing block 53. As the distance adjusting member 3 rotates, the second connecting rod 2 and the second fixing block 53 will not become loose.

[0058] In one embodiment, a pressure sensor 7 is further included. The pressure sensor 7 is provided with a fixed end 71 and a detection end 72. The fixed end 71 is fixed on the longitudinal plate of the first connecting plate 41, and the detection end 72 is fixedly connected to the bottom of the first hinge seat. The pressure sensor 7 can measure the tensile force and tensile strength of the binding member 8 while tightening the binding member 8, which is more convenient.

[0059] In a specific embodiment, the pressure sensor 7 can be selected as a planar force measuring sensor.

[0060] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A module binding fixture, characterized in that: include: A first connecting rod (1), a second connecting rod (2), a distance adjusting member (3), and a first supporting portion (4) and a second supporting portion (5) for supporting a binding member (8); the two ends of the distance adjusting member (3) are respectively provided with a first threaded hole and a second threaded hole with opposite threads; one end of the first connecting rod (1) is provided with a thread and is screwed to the first threaded hole, and the other end is fixedly connected to the first supporting portion (4); one end of the second connecting rod (2) is provided with a thread and is screwed to the second threaded hole, and the other end is fixedly connected to the second supporting portion (5).

2. The module binding member tightening tool according to claim 1, characterized in that: It also comprises a gas pressure spring (6), the cylinder (61) of the gas pressure spring (6) being fixed on the first support portion (4), and the end of the piston rod (62) of the gas pressure spring (6) being fixedly connected to an end of the first connecting rod (1) away from the thread.

3. The module binding member tightening tool according to claim 2, characterized in that: The first supporting portion (4) comprises a first connecting plate (41) and a first supporting assembly (42), and the cylinder (61) of the gas pressure spring (6) is fixedly connected to one side of the first connecting plate (41); The first supporting assembly (42) comprises a first connecting member (421) and a first tightening member (422), wherein the first connecting member (421) is fixed to a side of the first connecting plate (41) away from the gas spring (6), and the first tightening member (422) is connected to the first connecting member (421) for tightening the binding member (8).

4. The module binding member tightening tool according to claim 3, characterized in that: The first connecting member (421) is a first hinged seat, and the first tightening member (422) includes two first tightening rods (4221). The first hinged seat is fixed on the first connecting plate (41). The two first tightening rods (4221) are symmetrically arranged and one end of each is hinged to the first hinged seat, and the other end is used to tighten the binding member (8). The maximum angle between the two first tightening rods (4221) is 180°.

5. The module binding member tightening tool according to claim 4, characterized in that: The first tightening member (422) further comprises two first limit blocks (4222), wherein the two first limit blocks (4222) are respectively fixed on the two first tightening rods (4221), and the two first limit blocks (4222) can both abut against the first hinge seat to limit the rotation angle of the two first tightening rods (4221).

6. The module binding member tightening tool according to claim 5, characterized in that: The first tightening member (422) further comprises two first pulleys (4223), the two first pulleys (4223) being correspondingly rotatably connected to one end of the first tightening rod (4221) away from the first hinge seat, and the two first pulleys (4223) being used for rolling contact with the binding member (8).

7. The module binding member tightening tool according to claim 6, characterized in that: The surface of the first pulley (4223) is provided with an annular limiting groove.

8. The module binding member tightening tool according to claim 7, characterized in that: The first connecting plate (41) is an L-shaped plate, the cylinder (61) of the gas pressure spring (6) is fixedly connected to one side of the longitudinal plate of the first connecting plate (41), the first hinge seat is fixed to the other side of the longitudinal plate of the first connecting plate (41), and a plurality of connecting holes (411) for connecting to a workbench are provided on the transverse plate of the first connecting plate (41).

9. The module binding member tightening tool according to claim 8, characterized in that: The second supporting portion (5) comprises a second connecting plate (51) and a second supporting assembly; The second supporting assembly comprises a second connecting member (54) and a second tightening member, wherein the second connecting member (54) is fixed to a side of the second connecting plate (51) away from the second connecting rod (2), and the second tightening member is connected to the second connecting member (54) for tightening the binding member (8).

10. The module binding member tightening tool according to claim 8, characterized in that: It also includes a pressure sensor (7), the pressure sensor (7) being provided with a fixed end (71) and a detection end (72), the fixed end (71) being fixed on the longitudinal plate of the first connecting plate (41), and the detection end (72) being fixedly connected to the bottom of the first hinge seat.

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