Storage battery shell strength testing device

Abstract

The invention discloses a storage battery shell strength testing device, and relates to the technical field of storage battery production, the storage battery shell strength testing device comprises a base, the top of the base is provided with a synchronous testing mechanism for simultaneously carrying out multiple strength tests on a storage battery shell, and the top of the base is also provided with a rotating mechanism for changing the direction of the storage battery shell; the synchronous testing mechanism comprises a rotating disc rotationally connected with the top of the base, a support is further fixedly connected to the top of the base, a hollow rod is vertically and slidably connected to the top of the support, a grinding disc used for testing the strength of the storage battery shell is fixedly connected to the bottom of the hollow rod, and an impact rod is slidably connected into the hollow rod. By arranging the synchronous testing mechanism, when the friction test is performed on the storage battery shell, the impact resistance test of the shell can be synchronously performed, the performance data of the shell under two different stress conditions can be obtained in one experiment by performing the friction test and the impact resistance test at the same time, and the time and the cost required by repeated setting and independent test execution are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and specifically to a device for testing the strength of a battery housing. Background Art

[0002] A battery is a device that can convert chemical energy into electrical energy. The battery housing is an important part that protects the internal components of the battery (such as electrodes, electrolytes, etc.) from the external environment. It not only provides physical support for the battery, but also plays a role in sealing and protection, preventing chemical substances from leaking, external moisture or pollutants from invading, and in some cases, it also needs to have a certain mechanical strength to resist external force impacts. Therefore, the strength test of the battery housing is very important.

[0003] The strength test of the battery housing aims to simulate various mechanical stresses that the battery may encounter, such as pressure, impact, vibration, friction, etc., to evaluate whether the housing can effectively protect the internal components. However, the existing battery housing test devices have a single detection method, either performing pressure detection or impact testing. Therefore, it is impossible to ensure relatively accurate testing of the pressure-bearing strength and detection efficiency of the battery housing.

[0004] Therefore, the present invention proposes a device for testing the strength of a battery housing to make up for and improve the deficiencies of the existing technology. Summary of the Invention

[0005] In view of the above problems, the invention provides a device for testing the strength of a battery housing, which can effectively solve the problem of single detection method in the existing technology. To achieve the above purpose, the embodiments of the present application provide the following technical solutions: The present invention discloses a device for testing the strength of a battery housing, including a base. A synchronous testing mechanism for simultaneously performing multiple strength tests on the battery housing is provided on the top of the base, and a rotating mechanism for changing the direction of the battery housing is also provided on the top of the base; The synchronous testing mechanism includes a rotating disk rotatably connected to the top of the base. A support is also fixedly connected to the top of the base. A hollow rod is vertically slidably connected to the top of the support. A grinding disk for testing the strength of the battery housing is fixedly connected to the bottom of the hollow rod. An impact rod is slidably connected inside the hollow rod. The bottom of the impact rod is in a pointed shape, and a through hole for the bottom of the impact rod to pass through is provided in the middle of the grinding disk. A limiting mechanism for preventing the battery housing from shaking is provided on the top of the rotating disk, and a reset mechanism for controlling the limiting mechanism to return to the original position after the battery housing rotates is also provided on the top of the rotating disk.

[0006] Further, the synchronous testing mechanism further includes a vertical rod vertically and slidably connected to the top of the bracket. A cross rod is fixedly connected to the top of the vertical rod. One end of the cross rod away from the vertical rod is fixedly connected to the top of the impact rod. A roller is fixedly connected to the bottom of the vertical rod. A triangular block is fixedly connected to the top of the rotating disk, and the triangular block is located directly below the roller.

[0007] Further, the rotating mechanism includes mounting plates symmetrically and fixedly connected to the top of the rotating disk. Each mounting plate is horizontally rotatably connected to a rotating shaft. One end of one of the rotating shafts is fixedly connected to a grooved pulley. A round pin is slidably connected in the groove of the grooved pulley. The round pin is fixedly connected to a dial through a coupling shaft. A mounting frame is fixedly connected to the side of the mounting plate. A servo motor is fixedly connected to the top of the mounting frame. The output end of the servo motor is fixedly connected to the dial. A blowing mechanism for processing grinding debris is arranged between the two mounting plates. A jacking mechanism for driving the grinding disk to rise vertically is further arranged on one side of the mounting plate.

[0008] Further, the rotating mechanism further includes an L-shaped supporting plate fixedly connected to the other end of the rotating shaft. A screw rod is fixedly connected to the top of the L-shaped supporting plate. A pressing plate is slidably sleeved on the outer part of the screw rod. A nut is threadedly connected to the outer part of the screw rod. A groove for accommodating the battery case is formed on the surface of the horizontal section of the L-shaped supporting plate.

[0009] Further, the blowing mechanism includes a mounting rod fixedly connected between the two mounting plates. A plurality of air outlets are formed on the side of the mounting rod. A hose is fixedly connected to the top of the mounting rod. The hose is communicated with the air outlets. One end of the hose away from the mounting rod is fixedly connected to an air bag. The air bag is fixedly connected to the bottom of the bracket. A bottom plate is fixedly connected to the bottom of the air bag. The bottom plate is fixedly connected to the outside of the vertical rod.

[0010] Further, the jacking mechanism includes a connecting rod fixedly connected to the outside of the output end of the servo motor. One end of the connecting rod is fixedly connected to a semi-circular arc-shaped block. An L-shaped rod is fixedly connected to the outside of the hollow rod. The vertical section of the L-shaped rod is located above the arc-shaped block. A limiting rod is fixedly connected to the outside of the impact rod.

[0011] Further, the limiting mechanism includes a disk fixedly connected to the outside of the rotating shaft. A plurality of card slots are equiangularly formed on the outside of the disk. A U-shaped rod fixedly connected to the side of the mounting plate is arranged directly below the disk. A clamping block is slidably connected inside the U-shaped rod. The clamping block is engaged with one of the card slots.

[0012] Further, a swing rod rotatably connected to the U-shaped rod is arranged at the bottom of the U-shaped rod. A counterweight block is fixedly connected to the bottom of the swing rod. A connecting shaft is fixedly connected to the top of the swing rod. A dial for driving the clamping block to move in the U-shaped rod is rotatably connected to the outside of the connecting shaft.

[0013] Furthermore, a torsion spring is sleeved outside the connecting shaft. One end of the torsion spring is fixedly connected to the outside of the connecting shaft, and the other end of the torsion spring is fixedly connected to the paddle. A first limiting block for limiting the rotation angle of the paddle is fixedly connected to the side surface of the top of the swing rod.

[0014] Furthermore, the reset mechanism includes an elastic rod fixedly connected to the side surface of the clamping block. The elastic rod horizontally penetrates through the hole on the side surface of the U-shaped rod and extends below the sheave. A spring is sleeved outside the elastic rod, and the spring is located inside the U-shaped rod. A second limiting block is also fixedly connected to the outside of the elastic rod, and an extrusion block is fixedly connected to one end of the elastic rod away from the clamping block.

[0015] Beneficial effects: 1. By providing a synchronous testing mechanism in this device, when performing a friction test on the battery case, the impact resistance test of the case can be carried out synchronously. Conducting the friction and impact resistance tests simultaneously can obtain the performance data of the case under two different stress conditions in one experiment, reducing the time and cost required for repeated setup and execution of separate tests.

[0016] 2. By providing a rotating mechanism in this device, the servo motor is used to drive the rotation of the battery case, so that different surfaces of the case can be tested. By testing different surfaces of the case, more comprehensive data can be obtained to understand the strength, stiffness, and durability of the case in all directions, which helps to discover possible weak links and thus improve the design.

[0017] 3. By providing a clamping block in this device, the case is fixed by the clamping block after the battery case rotates, preventing the case from rotating during the test. By fixing the case, it can be ensured that the case remains in the same position and angle throughout the test, reducing the variables caused by accidental rotation, thereby improving the consistency and accuracy of the test data.

[0018] By providing a blowing mechanism in this device, the airbag being squeezed is used to blow air onto the surface of the case, thereby blowing away the debris generated by friction on the surface of the case. A clean case surface can ensure more accurate subsequent thickness measurement and appearance inspection without being interfered by residual debris. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only 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.

[0020] Figure 1This is the three-dimensional structure diagram of the first perspective of the present invention.

[0021] Figure 2 This is the three-dimensional structure diagram of the second perspective of the present invention.

[0022] Figure 3 This is the three-dimensional structure diagram of the rotation mechanism in the present invention.

[0023] Figure 4 In the present invention Figure 3 The enlarged structure diagram at position A.

[0024] Figure 5 This is the exploded view of the limiting mechanism in the present invention.

[0025] Figure 6 In the present invention Figure 6 The enlarged structure diagram at position B.

[0026] Figure 7 In the present invention Figure 6 The enlarged structure diagram at position C.

[0027] Figure 8 This is the three-dimensional structure diagram of the air blowing mechanism in the present invention.

[0028] Figure 9 This is the three-dimensional structure diagram of the jacking mechanism in the present invention.

[0029] Figure 10 This is the exploded view of the rotation mechanism in the present invention.

[0030] The reference numerals in the figure respectively represent: 10, base; 20, synchronous testing mechanism; 201, rotating disk; 202, hollow rod; 203, grinding disk; 204, impact rod; 205, cross bar; 206, vertical rod; 207, roller; 208, triangular block; 209, bracket; 30, rotation mechanism; 301, mounting plate; 302, rotating shaft; 303, L-shaped support plate; 304, screw; 305, pressing plate; 306, nut; 307, dial; 308, round pin; 309, grooved wheel; 310, servo motor; 311, mounting frame; 40, limiting mechanism; 401, disk; 402, card slot; 403, U-shaped rod; 404, block; 405, swing rod; 406, counterweight; 407, connecting shaft; 408, paddle; 409, first limiting block; 410, torsion spring; 50, reset mechanism; 501, elastic rod; 502, spring; 503, extrusion block; 504, second limiting block; 60, jacking mechanism; 601, connecting rod; 602, arc-shaped block; 603, L-shaped rod; 604, limiting rod; 70, air blowing mechanism; 701, airbag; 702, mounting rod; 703, air outlet; 704, hose; 705, bottom plate. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention will be further described below with reference to embodiments.

[0033] Refer to Figures 1 to 10 , a battery case strength testing device for this embodiment includes a base 10. A synchronous testing mechanism 20 for simultaneously performing multiple strength tests on the battery case is provided on the top of the base 10. A rotating mechanism 30 for changing the direction of the battery case is also provided on the top of the base 10.

[0034] The synchronous testing mechanism 20 includes a rotating disk 201 rotatably connected to the top of the base 10. A support 209 is also fixedly connected to the top of the base 10. A hollow rod 202 is vertically slidably connected to the top of the support 209. A grinding disk 203 for testing the strength of the battery case is fixedly connected to the bottom of the hollow rod 202. An impact rod 204 is slidably connected inside the hollow rod 202. The bottom of the impact rod 204 is in a pointed shape, and a through hole for the bottom of the impact rod 204 to pass through is provided in the middle of the grinding disk 203. A limiting mechanism 40 for preventing the battery case from shaking is provided on the top of the rotating disk 201. A reset mechanism 50 for controlling the limiting mechanism 40 to return to its original position after the battery case rotates is also provided on the top of the rotating disk 201.

[0035] The synchronous testing mechanism 20 further includes a vertical rod 206 vertically slidably connected to the top of the support 209. A cross bar 205 is fixedly connected to the top of the vertical rod 206. One end of the cross bar 205 away from the vertical rod 206 is fixedly connected to the top of the impact rod 204. A roller 207 is fixedly connected to the bottom of the vertical rod 206. A triangular block 208 is fixedly connected to the top of the rotating disk 201, and the triangular block 208 is located directly below the roller 207.

[0036] During specific operation, place the battery case to be tested on the rotating disk 201, press the grinding disk 203 against the top of the case, and then drive the rotating disk 201 to rotate horizontally and uniformly by an external motor. At this time, friction occurs between the top of the case and the grinding disk 203. After a period of friction, observe the wear degree of the case surface to determine the wear resistance strength of the case. When the rotating disk 201 rotates horizontally, the triangular block 208 pushes the roller 207 to move upward along the inclined surface of the triangular block 208. The upward-moving roller 207 drives the impact rod 204 to move upward through the vertical rod 206 and the cross rod 205. Then, the impact rod 204 moves downward under the action of gravity and impacts the top of the tested case, thereby testing the impact resistance of the case. Conducting friction and impact resistance tests simultaneously can obtain the performance data of the case under two different stress conditions in one experiment, reducing the time and cost required for repeated setup and execution of individual tests. Since the rotating disk 201 rotates horizontally and uniformly, the upward movement speed of the impact rod 204 remains consistent each time, and the grinding disk 203 is also tested at the same speed.

[0037] The rotating mechanism 30 includes mounting plates 301 symmetrically and fixedly connected to the top of the rotating disk 201. Each mounting plate 301 is horizontally rotatably connected to a rotating shaft 302. One end of one rotating shaft 302 is fixedly connected to a sprocket 309. A round pin 308 is slidably connected in the groove of the sprocket 309. The round pin 308 is fixedly connected to a dial 307 through a coupling shaft. A mounting frame 311 is fixedly connected to the side surface of the mounting plate 301. A servo motor 310 is fixedly connected to the top of the mounting frame 311. The output end of the servo motor 310 is fixedly connected to the dial 307. A blowing mechanism 70 for processing grinding debris is arranged between the two mounting plates 301. A lifting mechanism 60 for driving the grinding disk 203 to rise vertically is also arranged on one side of the mounting plate 301. The sprocket 309 is provided with four grooves.

[0038] The rotating mechanism 30 further includes an L-shaped support plate 303 fixedly connected to the other end of the rotating shaft 302. A screw rod 304 is fixedly connected to the top of the L-shaped support plate 303. A pressing plate 305 is slidably sleeved on the outer part of the screw rod 304. A nut 306 is threadedly connected to the outer part of the screw rod 304. The horizontal section surface of the L-shaped support plate 303 is provided with a groove for accommodating the battery case.

[0039] During specific operation, before testing, place the battery case to be tested in the groove of the horizontal section of the L-shaped support plate 303, then tighten the nut 306. Use the nut 306 to drive the pressure plate 305 to fix the case on the L-shaped support plate 303. After performing friction and impact tests on one surface of the case, start the servo motor 310 to rotate one full circle. The servo motor 310 drives the dial 307 and the round pin 308 to rotate one full circle synchronously. The round pin 308 drives the grooved pulley 309 to rotate 90 degrees. The grooved pulley 309 drives the battery case to rotate 90 degrees synchronously through the rotating shaft 302, thereby changing the test surface of the battery case. When changing the test surface of the battery case, test the two opposite surfaces of the battery case as a group, so as to keep the distance that the grinding impact rod 204 descends each time the same, thereby ensuring the accuracy of the test data. By testing different surfaces of the case, more comprehensive data can be obtained to understand the strength, stiffness, and durability of the case in all directions. This helps to discover possible weak links and thus improve the design.

[0040] The air blowing mechanism 70 includes a mounting rod 702 fixedly connected between two mounting plates 301. A plurality of air outlets 703 are formed on the side of the mounting rod 702. A hose 704 is fixedly connected to the top of the mounting rod 702. The hose 704 communicates with the air outlets 703. One end of the hose 704 away from the mounting rod 702 is fixedly connected to an airbag 701. The airbag 701 is fixedly connected to the bottom of the bracket 209. A bottom plate 705 is fixedly connected to the bottom of the airbag 701. The bottom plate 705 is fixedly connected to the outside of the vertical rod 206.

[0041] During specific operation, when the rotating disk 201 rotates horizontally, it drives the vertical rod 206 to move up and down through the triangular block 208. When the vertical rod 206 moves upward, it drives the bottom plate 705 to move up synchronously. At this time, the upward-moving bottom plate 705 and the bracket 209 squeeze the airbag 701. The compressed airbag 701 blows air from the hose 704 to the air outlets 703, thereby blowing air onto the surface of the battery case and blowing away the debris generated by friction on the surface of the case. A clean case surface can ensure more accurate subsequent thickness measurement and appearance inspection without being interfered by residual debris.

[0042] The jacking mechanism 60 includes a connecting rod 601 fixedly connected to the outside of the output end of the servo motor 310. One end of the connecting rod 601 is fixedly connected to a semi-circular arc-shaped block 602. An L-shaped rod 603 is fixedly connected to the outside of the hollow rod 202. The vertical section of the L-shaped rod 603 is located above the arc-shaped block 602. A limiting rod 604 is fixedly connected to the outside of the impact rod 204.

[0043] During specific operation, when the rotating mechanism 30 is working, when the servo motor 310 rotates, it synchronously drives the connecting rod 601 to rotate. The connecting rod 601 drives the arc-shaped block 602 to rotate. During the process of the arc-shaped block 602 rotating to the highest point, the arc-shaped block 602 upwardly pushes the bottom of the vertical section of the L-shaped rod 603, thereby upwardly pushing the hollow rod 202. During the upward movement of the hollow rod 202, it is blocked by the limiting rod 604. Thus, during the upward movement of the hollow rod 202, it drives the impact rod 204 to move upward synchronously, so that the distance between the grinding disc 203 and the bottom of the impact rod 204 from the battery housing is a certain distance, which can avoid unnecessary friction between the grinding disc 203 and the housing, reduce the wear between the two, ensure that the grinding disc 203 correctly disengages from the housing surface, and avoid surface scratches or other damages caused by improper operation.

[0044] The limiting mechanism 40 includes a disc 401 fixedly connected to the outside of the rotating shaft 302. A plurality of card slots 402 are equiangularly arranged on the outside of the disc 401. A U-shaped rod 403 fixedly connected to the side surface of the mounting plate 301 is arranged directly below the disc 401. A clamping block 404 is slidably connected inside the U-shaped rod 403, and the clamping block 404 is engaged with one of the card slots 402.

[0045] A swing rod 405 rotatably connected to the U-shaped rod 403 is arranged at the bottom of the U-shaped rod 403. A counterweight 406 is fixedly connected to the bottom of the swing rod 405. A connecting shaft 407 is fixedly connected to the top of the swing rod 405. A dial 408 for driving the clamping block 404 to move in the U-shaped rod 403 is rotatably connected to the outside of the connecting shaft 407.

[0046] A torsion spring 410 is also sleeved on the outside of the connecting shaft 407. One end of the torsion spring 410 is fixedly connected to the outside of the connecting shaft 407, and the other end of the torsion spring 410 is fixedly connected to the dial 408. And a first limiting block 409 for limiting the rotation angle of the dial 408 is fixedly connected to the side surface of the top of the swing rod 405.

[0047] During specific operation, during the rotation of the rotating disc 201, the counterweight 406 at the bottom of the swing rod 405 rotates under the action of centrifugal force, causing the swing rod 405 to rotate. At this time, the dial 408 at the top of the swing rod 405 deflects to the other side of the clamping block 404. The dial 408 is always deflected in the direction of the first limiting block 409 under the torsion of the torsion spring 410. After the rotating disc 201 stops rotating, the deflected swing rod 405 needs to return to the vertical state. At this time, the dial 408 is blocked by the bottom of the clamping block 404. During the process of the swing rod 405 returning to the vertical, the clamping block 404 is pushed by the dial 408, and the clamping block 404 moves along the U-shaped rod 403, thereby disengaging the clamping block 404 from the card slot 402. Then, the battery housing is driven by the rotating mechanism 30 to rotate by ninety degrees to change the test surface.

[0048] The reset mechanism 50 includes an elastic rod 501 fixedly connected to the side of the clamping block 404. The elastic rod 501 horizontally penetrates through the hole on the side of the U-shaped rod 403 and extends below the sheave 309. A spring 502 is sleeved outside the elastic rod 501, and the spring 502 is located inside the U-shaped rod 403. A second limit block 504 is also fixedly connected to the outside of the elastic rod 501, and an extrusion block 503 is fixedly connected to one end of the elastic rod 501 away from the clamping block 404.

[0049] During specific operation, when the clamping block 404 moves along the U-shaped rod 403, the clamping block 404 pushes the elastic rod 501 to move horizontally along the hole on the side of the U-shaped rod 403, so that the second limit block 504 outside the elastic rod 501 is stuck outside the hole on the side of the U-shaped rod 403. At this time, the spring 502 is compressed and stores energy by the U-shaped rod 403 and the clamping block 404. After the rotating mechanism 30 drives the battery housing to rotate by ninety degrees, during the rotation of the rotating sheave 309, the extrusion block 503 is pressed downward. The extrusion block 503 drives the elastic rod 501 to bend. The bent elastic rod 501 drives the second limit block 504 to disengage from outside the hole on the side of the U-shaped rod 403. Under the pushing force of the elastic force of the spring 502, the clamping block 404 re-enters the card slot 402, realizing the fixing effect on the rotated housing, and can ensure that the housing remains in the same position and angle during the whole test process, reducing the variables caused by accidental rotation, thereby improving the consistency and accuracy of the test data.

[0050] Working principle: The battery housing is fixed on the L-shaped support plate 303 of the rotating mechanism 30, and the synchronous test mechanism 20 is used for friction and impact tests. During the test, the blowing mechanism 70 is driven to blow away the debris generated by friction. After the test of one surface is completed, the rotating mechanism 30 drives the battery housing to rotate by ninety degrees to change the surface to be tested. When the rotating mechanism 30 works, it first drives the limiting mechanism 40 to release the fixation of the housing. At the same time, the rotating mechanism 30 also pushes the grinding disc 203 and the impact rod 204 upward through the lifting mechanism 60, so that the grinding disc 203 and the impact rod 204 are temporarily separated from the housing. After the housing rotates by ninety degrees, the grinding disc 203 and the impact rod 204 re-contact the housing under the action of gravity. After the housing rotates by ninety degrees, the reset mechanism 50 drives the limiting mechanism 40 to fix the rotated housing again.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery case strength testing device, characterized in that, It includes a base (10). At the top of the base (10), there is a synchronous testing mechanism (20) for simultaneously performing multiple strength tests on the battery case, and at the top of the base (10), there is also a rotating mechanism (30) for changing the direction of the battery case. The synchronous testing mechanism (20) includes a rotating disk (201) rotatably connected to the top of the base (10). At the top of the base (10), there is also a fixedly connected support (209). A hollow rod (202) is vertically slidably connected to the top of the support (209). At the bottom of the hollow rod (202), there is a grinding disk (203) for testing the strength of the battery case. An impact rod (204) is slidably connected inside the hollow rod (202). The bottom of the impact rod (204) is pointed, and a through hole for the bottom of the impact rod (204) to pass through is provided in the middle of the grinding disk (203). At the top of the rotating disk (201), there is a limiting mechanism (40) for preventing the battery case from shaking, and at the top of the rotating disk (201), there is also a reset mechanism (50) for controlling the limiting mechanism (40) to return to its original position after the battery case rotates.

2. The strength testing device for a storage battery housing according to claim 1, wherein, The synchronous testing mechanism (20) also includes a vertical rod (206) vertically slidably connected to the top of the support (209). At the top of the vertical rod (206), there is a horizontally fixedly connected cross bar (205). One end of the cross bar (205) away from the vertical rod (206) is fixedly connected to the top of the impact rod (204). At the bottom of the vertical rod (206), there is a roller (207). A triangular block (208) is fixedly connected to the top of the rotating disk (201), and the triangular block (208) is directly below the roller (207).

3. The strength testing device for a storage battery housing according to claim 1, characterized in that, The rotating mechanism (30) includes mounting plates (301) symmetrically and fixedly connected to the top of the rotating disk (201). Each mounting plate (301) is horizontally rotatably connected to a rotating shaft (302). One end of one of the rotating shafts (302) is fixedly connected to a grooved pulley (309). A round pin (308) is slidably connected in the groove of the grooved pulley (309). The round pin (308) is fixedly connected to a dial (307) through a coupling shaft. A mounting frame (311) is fixedly connected to the side of the mounting plate (301). A servo motor (310) is fixedly connected to the top of the mounting frame (311). The output end of the servo motor (310) is fixedly connected to the dial (307). A blowing mechanism (70) for processing grinding debris is provided between the two mounting plates (301), and a jacking mechanism (60) for driving the grinding disk (203) to rise vertically is also provided on one side of the mounting plate (301).

4. The strength testing device for a storage battery housing according to claim 3, wherein, The rotating mechanism (30) also includes an L-shaped support plate (303) fixedly connected to the other end of the rotating shaft (302). At the top of the L-shaped support plate (303), there is a screw rod (304). A pressing plate (305) is slidably sleeved on the outside of the screw rod (304). A nut (306) is threadedly connected to the outside of the screw rod (304). A groove for accommodating the battery case is provided on the horizontal surface of the horizontal section of the L-shaped support plate (303).

5. The strength testing device for a storage battery housing according to claim 3, characterized in that, The blowing mechanism (70) includes a mounting rod (702) fixedly connected between two mounting plates (301). A plurality of air outlets (703) are formed on the side of the mounting rod (702). A hose (704) is fixedly connected to the top of the mounting rod (702). The hose (704) communicates with the air outlets (703). One end of the hose (704) away from the mounting rod (702) is fixedly connected to an airbag (701). The airbag (701) is fixedly connected to the bottom of the bracket (209). A bottom plate (705) is fixedly connected to the bottom of the airbag (701). The bottom plate (705) is fixedly connected to the outside of the vertical rod (206).

6. The strength testing device for a storage battery housing according to claim 3, wherein, The lifting mechanism (60) includes a connecting rod (601) fixedly connected to the outside of the output end of the servo motor (310). One end of the connecting rod (601) is fixedly connected to a semi-circular arc-shaped block (602). An L-shaped rod (603) is fixedly connected to the outside of the hollow rod (202). The vertical section of the L-shaped rod (603) is located above the arc-shaped block (602). A limiting rod (604) is fixedly connected to the outside of the impact rod (204).

7. The strength testing device for a storage battery housing according to claim 1, wherein, The limiting mechanism (40) includes a disc (401) fixedly connected to the outside of the rotating shaft (302). A plurality of card slots (402) are equiangularly formed on the outside of the disc (401). A U-shaped rod (403) fixedly connected to the side of the mounting plate (301) is arranged directly below the disc (401). A clamping block (404) is slidably connected inside the U-shaped rod (403). The clamping block (404) meshes with one of the card slots (402).

8. An intensity testing device for a storage battery housing according to claim 7, characterized in that, A swing rod (405) rotatably connected to the U-shaped rod (403) is arranged at the bottom of the U-shaped rod (403). A counterweight (406) is fixedly connected to the bottom of the swing rod (405). A connecting shaft (407) is fixedly connected to the top of the swing rod (405). A dial (408) for driving the clamping block (404) to move in the U-shaped rod (403) is rotatably connected to the outside of the connecting shaft (407).

9. The battery case strength testing device according to claim 8, wherein A torsion spring (410) is also sleeved on the outside of the connecting shaft (407). One end of the torsion spring (410) is fixedly connected to the outside of the connecting shaft (407). The other end of the torsion spring (410) is fixedly connected to the dial (408). A first limiting block (409) for limiting the rotation angle of the dial (408) is fixedly connected to the side of the top of the swing rod (405).

10. A battery case strength testing device according to claim 1, characterized in that, The reset mechanism (50) includes an elastic rod (501) fixedly connected to the side of the clamping block (404). The elastic rod (501) horizontally penetrates through a hole on the side of the U-shaped rod (403) and extends below the sprocket (309). A spring (502) is sleeved on the outside of the elastic rod (501). The spring (502) is located inside the U-shaped rod (403). A second limiting block (504) is also fixedly connected to the outside of the elastic rod (501). An extrusion block (503) is fixedly connected to one end of the elastic rod (501) away from the clamping block (404).

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