A device for power battery module side plate tensile test

Abstract

The application provides a device for power battery module side plate stretching test, and relates to the technical field of stretching test. The device comprises a supporting mechanism and a moving mechanism. The supporting mechanism comprises a workbench plate, and moving slots are arranged at the middle positions of the two sides of the workbench plate. The moving mechanism comprises a plurality of moving bases, and a plurality of limiting plates are fixedly arranged at the lower end positions of the front and rear sides of the moving bases. When the power battery module side plate is stretched, the pressing and bending mechanism is lifted by the lifting oil cylinder, the pressing and bending roller is attached to the lower end surface of the side plate, the lower end surface of the side plate is pressed, the side plate is bent, the tensile strength of the side plate when the side surface is pressed is tested, the stretching result of the power battery module side plate is more perfect, the display condition is more fitted, the turning angle of the side plate can be adjusted through the speed reduction driving motor, and the side plate can be pressed in different directions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tensile test, in particular to a device for tensile test of power battery module side plate. BACKGROUND

[0002] Power batteries are often used as power supply components of new energy vehicles and are increasingly applied in the new energy vehicle industry. In a power battery pack, in order to safely and effectively manage hundreds or thousands of single cells, the cells are not placed randomly in the shell of the power battery, but are placed in an orderly manner according to modules and packs. The smallest unit is a cell, a group of cells can form a module, and several modules can form a pack. The module is an intermediate energy storage unit between the cell monomer and the battery pack. It forms a modular battery pack by connecting multiple cells in series and parallel, and auxiliary structural members that collect current, collect data, fix and protect the cells. Due to the consideration of safety and reliability, the side plate set on the outside of the battery pack to serve as a protective shell needs to have high tensile properties to protect the internal module.

[0003] In actual use, the power battery module side plate is not only subjected to lateral tension, but also subjected to vertical pressure stress perpendicular to the upper and lower end faces. When the general tensile test device performs tensile test on the above-mentioned side plate, simply extending the side plate to both sides cannot meet the actual test requirements. In order to improve and accuracy of the tensile test results, the influence of the vertical pressure stress of the upper and lower end faces needs to be fully considered when performing lateral tensile test. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present application provides a device for tensile test of power battery module side plate, which solves the series of problems that the general tensile test device cannot meet the actual test requirements by simply extending the side plate to both sides when performing tensile test on the above-mentioned side plate. In order to improve and accuracy of the tensile test results, the influence of the vertical pressure stress of the upper and lower end faces needs to be fully considered when performing lateral tensile test.

[0006] (II) Technical solutions

[0007] In order to achieve the above object, the present application is realized by the following technical scheme: A device for power battery module side plate stretching test, comprising a supporting mechanism and a moving mechanism, the supporting mechanism comprises a workbench plate, the middle position of both sides of the workbench plate is provided with a moving slot, the moving mechanism comprises a plurality of moving bases, a plurality of limiting plates are fixedly arranged at the lower end positions of the front and rear sides of the moving bases respectively, a plurality of limiting plates are movably clamped on the upper and lower end faces of the workbench plate near the moving slot positions, a plurality of moving bases are clamped and arranged in the moving slot through a plurality of limiting plates, a plurality of speed reduction drive motors are embeddedly arranged at the upper end positions of the moving bases, and a clamping mechanism is fixedly arranged at the output end positions of the opposite sides of the speed reduction drive motors.

[0008] A plurality of lifting cylinders are fixedly arranged at the middle positions of the upper end faces of the workbench plate, a plurality of bending pressing mechanisms are fixedly arranged at the upper side extending end positions of the lifting cylinders, the bending pressing mechanism comprises a fixed bearing plate, a roller support is fixedly arranged at the upper end face of the fixed bearing plate, and a bending roller is rotatably arranged in the roller support through a rotating shaft.

[0009] Preferably, the clamping mechanism comprises a clamping base plate, an upper bearing plate is fixedly arranged at the upper side position of one side end face of the clamping base plate, a fixed clamping plate is fixedly arranged at the lower end position of the side position of the clamping base plate close to the upper bearing plate, a movable clamping plate is movably arranged between the upper bearing plate and the fixed clamping plate on the side of the clamping base plate close to the fixed clamping plate, a sliding groove is formed at the upper side front and rear end positions of the end face of the side of the clamping base plate away from the fixed clamping plate, a connecting plate is fixedly arranged at the positions close to the sliding groove on the front and rear sides of the movable clamping plate, a plurality of sliding blocks are fixedly arranged at the ends of a plurality of connecting plates, a plurality of sliding blocks are slidably arranged in the sliding groove, a threaded rod is threadedly penetrated and sleeved at the center position of the upper bearing plate, and a sleeve ring is fixedly arranged at the upper end face of the movable clamping plate.

[0010] Preferably, the movable clamping plate is provided with a movable cavity, a movable block is movably arranged in the movable cavity, and the lower end of the threaded rod is fixedly connected and arranged at the center position of the upper end face of the movable block.

[0011] Preferably, a hand rotating wheel is fixedly arranged at the upper end position of the threaded rod.

[0012] Preferably, the threaded rod is movably sleeved in the sleeve ring.

[0013] Preferably, a connecting seat is fixedly arranged at the positions of both sides of the workbench plate, and a plurality of triangular struts are fixedly arranged at the lower end faces of a plurality of connecting seats.

[0014] Preferably, a bottom frame is fixedly arranged at the lower end positions of a plurality of triangular struts.

[0015] Preferably, multiple fixed supports are fixedly arranged on both sides of the lower end surface of the workbench, and each of the multiple fixed supports is fixedly arranged with a tension cylinder at a position away from each other. The output ends of the multiple tension cylinders are respectively fixedly arranged at the lower end of the opposite side of the movable base.

[0016] Preferably, a first reinforcing wing plate is fixedly connected between the movable base and the limiting plate.

[0017] Preferably, a second reinforcing wing plate is fixedly provided at the connection position between the lower end face of the fixing clamp and the clamping base plate.

[0018] Working principle: In use, the side plate of the power battery module is placed on the upper surface of the fixed clamping plate, and the movable clamping plate is moved downward to the upper surface of the side plate of the power battery module. The relative position of the movable clamping plate is adjusted by manually rotating the threaded screw, so that the movable clamping plate and the fixed clamping plate are close to each other to clamp and fix the side plate of the power battery module. Then, multiple tension cylinders push the movable mechanism to move, so that the multiple clamping mechanisms are far apart, stretching the side plate. The lifting cylinder raises the bending mechanism, so that the bending roller is in contact with the lower end surface of the side plate, applying pressure to the lower end surface of the side plate to make it bend, thereby testing the tensile strength of the side plate under pressure.

[0019] (III) Beneficial Effects

[0020] This invention provides an apparatus for tensile testing of the side plates of a power battery module. It has the following beneficial effects:

[0021] 1. This invention provides a device for tensile testing of the side panel of a power battery module. When the side panel of the power battery module is stretched, the device lifts the bending mechanism by a lifting cylinder, so that the bending roller is in contact with the lower end face of the side panel, and applies pressure to the lower end face of the side panel to make it bend. In this way, the tensile strength of the side panel under pressure is tested, so that the tensile results of the side panel of the power battery module are more complete and more in line with the display.

[0022] 2. The present invention provides a device for tensile testing of the side plate of a power battery module. Multiple geared drive motors drive multiple clamping mechanisms to rotate, thereby adjusting the relative flipping angle of the multiple clamping mechanisms to facilitate adjustment of the relative test angle and position of the side plate. The lifting cylinder pushes the bending mechanism to apply pressure to different parts of the side plate, which facilitates testing the tensile performance of the side plate under different lateral pressure environments.

[0023] 3. The present invention provides a device for tensile testing of the side plate of a power battery module. The structure of the device is relatively simple compared with the existing tensile mechanism, and it is also easier to use. The simple structure is easy to manufacture and easy to maintain. Attached Figure Description

[0024] Figure 1 This is a frontal view of the present invention;

[0025] Figure 2 This is an isometric view of the position of the movable base of the present invention;

[0026] Figure 3 This is a schematic diagram of the moving mechanism of the present invention from the isometric perspective;

[0027] Figure 4 This is a schematic diagram of the clamping mechanism of the present invention from the axial side.

[0028] Figure 5 This is a schematic diagram of the support mechanism of the present invention from an isometric perspective.

[0029] Figure 6 This is a schematic diagram of the bending mechanism of the present invention from the axial side.

[0030] Figure 7 This is a side sectional view of the location of the active cavity in this invention.

[0031] The components are as follows: 1. Support mechanism; 2. Moving mechanism; 3. Moving base; 4. Gear drive motor; 5. First reinforcing wing plate; 6. Limiting plate; 7. Clamping mechanism; 8. Clamping base plate; 9. Slider; 10. Slide groove; 11. Upper support plate; 12. Moving clamping plate; 13. Collar; 14. Connecting plate; 15. Fixed clamping plate; 16. Second reinforcing wing plate; 17. Threaded screw; 18. Manual rotary wheel; 19. Lifting cylinder; 20. Tensioning cylinder; 21. Fixed support; 22. Bending mechanism; 23. Bending roller; 24. Roller support; 25. Fixed support plate; 26. Workbench; 27. Moving slot; 28. Connecting seat; 29. ​​Triangular support column; 30. Bottom frame; 31. Movable cavity; 32. Movable block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example:

[0034] like Figures 1-7As shown, this embodiment of the invention provides a device for tensile testing of the side plate of a power battery module, including a support mechanism 1 and a moving mechanism 2. The support mechanism 1 includes a worktable 26, and a movable slot 27 is provided in the middle of both sides of the worktable 26. The moving mechanism 2 includes multiple movable bases 3, and multiple limiting plates 6 are fixedly provided at the lower ends of the front and rear sides of the multiple movable bases 3. The multiple limiting plates 6 are movably locked on the upper and lower ends of the worktable 26 near the movable slots 27. The multiple movable bases 3 are locked in the movable slots 27 through the multiple limiting plates 6. A reduction drive motor 4 is embedded in the upper end of each of the multiple movable bases 3, and a clamping mechanism 7 is fixedly provided at the output end of each of the multiple reduction drive motors 4 on the opposite side.

[0035] Multiple geared drive motors 4 drive multiple clamping mechanisms 7 to rotate, thereby adjusting the relative flipping angle of the multiple clamping mechanisms 7, which facilitates the adjustment of the relative test angle and position of the side plates;

[0036] Multiple lifting cylinders 19 are fixedly installed at the middle position of the upper end face of the workbench 26. A bending mechanism 22 is fixedly installed at the upper protruding end of the multiple lifting cylinders 19. The bending mechanism 22 includes a fixed support plate 25. A roller support 24 is fixedly installed on the upper end face of the fixed support plate 25. A bending roller 23 is rotatably installed inside the roller support 24 via a rotating shaft.

[0037] When stretching the side panel of the power battery module, the side panel is clamped and fixed by multiple clamping mechanisms 7. During stretching, the bending mechanism 22 is lifted by the lifting cylinder 19, so that the bending roller 23 is attached to the lower end face of the side panel and pressure is applied to the lower end face of the side panel to make it bend. Then the tensile strength of the side panel under pressure is tested, so that the stretching result of the side panel of the power battery module is more perfect.

[0038] The clamping mechanism 7 includes a clamping base plate 8. An upper support plate 11 is fixedly disposed on the upper side of one end face of the clamping base plate 8. A fixed clamping plate 15 is fixedly disposed on the lower end of the side of the clamping base plate 8 near the upper support plate 11. A movable clamping plate 12 is movably disposed on the side of the clamping base plate 8 near the fixed clamping plate 15 between the upper support plate 11 and the fixed clamping plate 15. Slide grooves 10 are provided at both the front and rear ends of the upper side of the end face of the clamping base plate 8 away from the fixed clamping plate 15. Connecting plates 14 are fixedly disposed on both the front and rear sides of the movable clamping plate 12 near the slide grooves 10. Slider 9 is fixedly disposed at the ends of multiple connecting plates 14. Multiple slider 9 are slidably disposed inside the slide grooves 10. A threaded screw 17 is threaded through the center of the upper support plate 11. A collar 13 is fixedly disposed on the upper end face of the movable clamping plate 12.

[0039] The power battery module side plate is placed on the upper surface of the fixed clamping plate 15, and the movable clamping plate 12 is moved downward to the upper surface of the power battery module side plate. The power battery module side plate is clamped and fixed by the movable clamping plate 12 and the fixed clamping plate 15 approaching each other. Then, multiple clamping mechanisms 7 are moved to opposite positions on both sides to stretch the power battery module side plate and then the tensile performance of the power battery module side plate is viewed from the side.

[0040] The movable clamp 12 has a movable cavity 31 inside, and a movable block 32 is movably arranged inside the movable cavity 31. The lower end of the threaded screw 17 is fixedly connected to the center position of the upper end face of the movable block 32, and a manual rotating wheel 18 is fixedly arranged at the upper end position of the threaded screw 17.

[0041] By rotating the manual turn wheel 18, the threaded screw 17 is moved to a suitable relative height position, thereby controlling the up and down movement of the moving clamp 12;

[0042] The threaded screw 17 is movably sleeved inside the collar 13 at its lower end. Connecting seats 28 are fixedly installed on both sides of the worktable 26. Multiple triangular support pillars 29 are fixedly installed on the lower end face of the multiple connecting seats 28. Bottom frame 30 is fixedly installed at the lower end of the multiple triangular support pillars 29. Multiple fixed bearings 21 are fixedly installed on both sides of the lower end face of the worktable 26. Tensioning cylinders 20 are fixedly installed on the side away from each other of the multiple fixed bearings 21 to provide the necessary power output for stretching the side plate. The output ends of the multiple tensioning cylinders 20 are respectively fixedly installed at the lower end of the opposite side of the movable base 3. A first reinforcing wing plate 5 is fixedly connected between the movable base 3 and the limiting plate 6. A second reinforcing wing plate 16 is fixedly installed at the connection position between the lower end face of the fixed clamping plate 15 and the clamping base plate 8, thereby strengthening the structural connection strength between the fixed clamping plate 15 and the clamping base plate 8.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for tensile testing of side plates of a power battery module, comprising a support mechanism (1) and a moving mechanism (2), characterized in that: The support mechanism (1) includes a worktable (26), and a movable slot (27) is provided in the middle of both sides of the worktable (26). The moving mechanism (2) includes multiple movable bases (3). Multiple limiting plates (6) are fixedly provided at the lower ends of the front and rear sides of the multiple movable bases (3). The multiple limiting plates (6) are movably locked on the upper and lower ends of the worktable (26) near the movable slot (27). The multiple movable bases (3) are locked in the movable slot (27) through the multiple limiting plates (6). A reduction drive motor (4) is embedded in the upper end of the multiple movable bases (3). A clamping mechanism (7) is fixedly provided at the output end of the multiple reduction drive motors (4) on the opposite side. Multiple lifting cylinders (19) are fixedly installed at the middle position of the upper end face of the workbench (26). A bending mechanism (22) is fixedly installed at the upper protruding end of the multiple lifting cylinders (19). The bending mechanism (22) includes a fixed support plate (25). A roller support (24) is fixedly installed on the upper end face of the fixed support plate (25). A bending roller (23) is rotatably installed inside the roller support (24) through a rotating shaft. Multiple fixed supports (21) are fixedly arranged on both sides of the lower end surface of the worktable (26). Each of the multiple fixed supports (21) is fixedly arranged with a tension cylinder (20) at a position away from each other. The output ends of the multiple tension cylinders (20) are respectively fixedly arranged at the lower end of the opposite side of the movable base (3).

2. The apparatus for tensile testing of side plates of power battery modules according to claim 1, characterized in that: The clamping mechanism (7) includes a clamping base plate (8). An upper support plate (11) is fixedly disposed on the upper side of one end face of the clamping base plate (8). A fixed clamping plate (15) is fixedly disposed on the lower end of the clamping base plate (8) near the upper support plate (11). A movable clamping plate (12) is movably disposed on the clamping base plate (8) near the fixed clamping plate (15) between the upper support plate (11) and the fixed clamping plate (15). The clamping base plate (8) is away from the fixed clamping plate (15). The upper side of one end face is provided with a sliding groove (10) at both the front and rear ends. The movable clamping plate (12) is fixedly provided with a connecting plate (14) at the front and rear sides near the sliding groove (10). The ends of the multiple connecting plates (14) are fixedly provided with sliders (9). The multiple sliders (9) are slidably provided inside the sliding groove (10). The upper support plate (11) is threaded with a threaded screw (17) at the center position. The upper end face of the movable clamping plate (12) is fixedly provided with a collar (13).

3. The apparatus for tensile testing of side plates of power battery modules according to claim 2, characterized in that: The movable clamp (12) has an open cavity (31) inside, and a movable block (32) is movably arranged inside the cavity (31). The lower end of the threaded screw (17) is fixedly connected to the center of the upper surface of the movable block (32).

4. The apparatus for tensile testing of side plates of power battery modules according to claim 2, characterized in that: A manual turn wheel (18) is fixedly installed at the upper end of the threaded screw (17).

5. The apparatus for tensile testing of side plates of power battery modules according to claim 2, characterized in that: The threaded screw (17) is movably sleeved inside the collar (13) at its lower end.

6. The apparatus for tensile testing of side plates of power battery modules according to claim 1, characterized in that: Connecting seats (28) are fixedly installed on both sides of the workbench (26), and multiple triangular support pillars (29) are fixedly installed on the lower end face of the multiple connecting seats (28).

7. The apparatus for tensile testing of side plates of power battery modules according to claim 6, characterized in that: Bottom frames (30) are fixedly provided at the lower ends of the multiple triangular support pillars (29).

8. The apparatus for tensile testing of side plates of power battery modules according to claim 1, characterized in that: A first reinforcing wing plate (5) is fixedly connected between the movable base (3) and the limiting plate (6).

9. The apparatus for tensile testing of side plates of power battery modules according to claim 2, characterized in that: A second reinforcing wing plate (16) is fixedly provided at the connection position between the lower end face of the fixed clamping plate (15) and the clamping base plate (8).

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