A battery shell strength testing device

Abstract

The present invention discloses a battery shell strength testing device, which relates to the technical field of battery production. The device comprises a base, a synchronous testing mechanism for simultaneously performing multiple strength tests on the battery shell is arranged on the top of the base, a rotating mechanism for changing the direction of the battery shell is also arranged on the top of the base, the synchronous testing mechanism comprises a rotating disk rotatably connected to the top of the base, a bracket is also fixedly connected to the top of the base, a hollow rod is vertically slidably connected to the top of the bracket, a grinding disk for testing the strength of the battery shell is fixedly connected to the bottom of the hollow rod, an impact rod is slidably connected inside the hollow rod, and the bottom of the impact rod is pointed. By providing the synchronous testing mechanism, the impact resistance test of the battery shell can be simultaneously performed when the friction test is performed on the battery shell. By performing the friction and impact resistance tests simultaneously, the performance data of the shell under two different stress conditions can be obtained in one experiment, thereby reducing the time and cost required for repeated settings and execution of separate tests.

Description

Technical Field

[0001] The invention relates to the technical field of battery production, in particular to a battery shell strength testing device. Background Art

[0002] A battery is a device that can convert chemical energy into electrical energy. The battery casing is an important part that protects the internal components of the battery (such as electrodes, electrolytes, etc.) from the influence of the external environment. It not only provides physical support for the battery, but also plays a sealing and protective role to prevent chemical leakage, external moisture or contaminants from invading. In some cases, it also needs to have a certain mechanical strength to withstand external force impact. Therefore, battery casing strength testing is very important.

[0003] The battery case strength test is designed to simulate various mechanical stresses that the battery may encounter, such as pressure, impact, vibration, friction, etc., to evaluate whether the case can effectively protect the internal components. However, the existing battery case testing equipment has a single detection method, either performing pressure testing or impact testing, and therefore cannot guarantee a more accurate test of the battery case's pressure strength and detection efficiency.

[0004] Therefore, the present invention proposes a battery shell strength testing device to remedy and improve the shortcomings of the prior art. Summary of the Invention

[0005] In view of the above problems, the present invention provides a battery shell strength testing device that can effectively solve the problem of a single detection method in the prior art. To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The present invention discloses a battery shell strength testing device, comprising a base, a synchronous testing mechanism for simultaneously performing multiple strength tests on the battery shell is provided on the top of the base, and a rotating mechanism for changing the direction of the battery shell is also provided on the top of the base;

[0007] The synchronous testing mechanism includes a rotating disk rotatably connected to the top of the base, the top of the base is also fixedly connected to a bracket, the top of the bracket is vertically slidably connected to a hollow rod, the bottom of the hollow rod is fixedly connected to a grinding disk for testing the strength of the battery shell, the inside of the hollow rod is slidably connected to an impact rod, the bottom of the impact rod is pointed, and a through hole is opened in the middle of the grinding disk for the bottom of the impact rod to pass through, the top of the rotating disk is provided with a limiting mechanism to prevent the battery shell from shaking, and the top of the rotating disk is also provided with a reset mechanism for controlling the limiting mechanism to return to its original position after the battery shell rotates.

[0008] Furthermore, the synchronous testing mechanism also includes a vertical rod connected to the top of the bracket in a vertical sliding manner, the top of the vertical rod is fixedly connected to a cross rod, the end of the cross rod away from the vertical rod is fixedly connected to the top of the impact rod, the bottom of the vertical rod is fixedly connected to a roller, and the top of the rotating disk is fixedly connected to a triangular block, and the triangular block is located directly below the roller.

[0009] Furthermore, the rotating mechanism includes a mounting plate symmetrically fixedly connected to the top of the rotating disk, each of the mounting plates is horizontally rotatably connected to a rotating shaft, one end of one of the rotating shafts is fixedly connected to a groove wheel, a round pin is slidably connected in the groove of the groove wheel, and the round pin is fixedly connected to the dial through a connecting 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, and the output end of the servo motor is fixedly connected to the dial, an air blowing mechanism for processing grinding debris is provided between the two mounting plates, and a lifting mechanism for driving the grinding disk to rise vertically is also provided on one side of the mounting plate.

[0010] Furthermore, the rotating mechanism also includes an L-shaped support plate fixedly connected to the other end of the rotating shaft, a screw is fixedly connected to the top of the L-shaped support plate, a pressure plate is slidably sleeved on the outside of the screw, a nut is threadedly connected to the outside of the screw, and a groove is provided on the surface of the horizontal section of the L-shaped support plate for accommodating the battery casing.

[0011] Furthermore, the blowing mechanism includes a mounting rod fixedly connected between two mounting plates, a plurality of air outlets are provided on the side of the mounting rod, a hose is fixedly connected to the top of the mounting rod, the hose and the air outlet are communicated with each other, an end of the hose away from the mounting rod is fixedly connected to an airbag, the airbag is fixedly connected to the bottom of the bracket, the bottom of the airbag is fixedly connected to a base plate, and the base plate is fixedly connected to the outside of the vertical rod.

[0012] Furthermore, the lifting 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 semicircular arc block, the outside of the hollow rod is fixedly connected to an L-shaped rod, the vertical section of the L-shaped rod is located above the arc block, and the outside of the impact rod is fixedly connected to a limiting rod.

[0013] Furthermore, the limiting mechanism includes a disc fixedly connected to the outside of the rotating shaft, and a plurality of slots are provided on the outside of the disc at equal angles. A U-shaped rod fixedly connected to the side of the mounting plate is provided directly below the disc, and a block is slidably connected to the inside of the U-shaped rod, and the block engages with one of the slots.

[0014] Furthermore, a swing rod rotatably connected to the U-shaped rod is provided at the bottom of the U-shaped rod, a counterweight is fixedly connected to the bottom of the swing rod, a connecting shaft is fixedly connected to the top of the swing rod, and a paddle is rotatably connected to the outside of the connecting shaft for driving the block to move in the U-shaped rod.

[0015] Furthermore, a torsion spring is sleeved on the outside of the connecting shaft, one end of the torsion spring is fixedly connected to the outside of the connecting shaft, the other end of the torsion spring is fixedly connected to the paddle, and the top side of the swing rod is fixedly connected to a first limit block for limiting the rotation angle of the paddle.

[0016] Furthermore, the reset mechanism includes an elastic rod fixedly connected to the side of the blocking block, the elastic rod horizontally passes through the hole on the side of the U-shaped rod and extends to the bottom of the groove wheel, a spring is sleeved on the outside of the elastic rod, and the spring is located inside the U-shaped rod, and a second limit block is also fixedly connected to the outside of the elastic rod, and the end of the elastic rod away from the blocking block is fixedly connected to an extrusion block.

[0017] Beneficial effects:

[0018] 1. This device is equipped with a synchronous testing mechanism, which can simultaneously test the impact resistance of the battery shell while performing a friction test on the battery shell. Simultaneous friction and impact resistance tests can obtain performance data of the shell under two different stress conditions in one experiment, reducing the time and cost required for repeated setup and execution of separate tests.

[0019] 2. This device is equipped with a rotating mechanism and uses a servo motor to drive the battery casing to rotate, so that different surfaces of the casing can be tested. By testing different surfaces of the casing, more comprehensive data can be obtained to understand the strength, rigidity and durability of the casing in all directions, which helps to discover possible weak links and improve the design.

[0020] 3. This device is equipped with a clamping block to fix the battery casing after it rotates, preventing the casing from rotating during the test. By fixing the casing, it can ensure that the casing remains in the same position and angle throughout the test process, reducing variables caused by accidental rotation, thereby improving the consistency and accuracy of the test data.

[0021] The device is provided with an air blowing mechanism, which uses the squeezed air bag to blow air toward the shell surface, thereby blowing away the debris generated by the friction on the shell surface. The clean shell surface can ensure that the subsequent thickness measurement and appearance inspection are more accurate without being disturbed by residual debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0023] Figure 1This is a three-dimensional structural diagram of the present invention from the first viewing angle.

[0024] Figure 2 This is a three-dimensional structural diagram from a second viewing angle of the present invention.

[0025] Figure 3 It is a three-dimensional structural diagram of the rotating mechanism in the present invention.

[0026] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A.

[0027] Figure 5 It is an exploded view of the limiting mechanism in the present invention.

[0028] Figure 6 For the present invention Figure 6 A magnified view of the structure at point B.

[0029] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C in the middle.

[0030] Figure 8 It is a three-dimensional structural diagram of the blowing mechanism in the present invention.

[0031] Figure 9 It is a three-dimensional structural diagram of the jacking mechanism in the present invention.

[0032] Figure 10 It is an exploded view of the rotating mechanism in the present invention.

[0033] The numbers in the figure represent: 10, base; 20, synchronous test mechanism; 201, rotating disk; 202, hollow rod; 203, grinding disk; 204, impact rod; 205, crossbar; 206, vertical rod; 207, roller; 208, triangular block; 209, bracket; 30, rotating mechanism; 301, mounting plate; 302, rotating shaft; 303, L-shaped support plate; 304, screw; 305, pressure plate; 306, nut; 307, dial; 308, round pin; 309, groove wheel; 310, servo motor; 311, mounting frame; 40, limit mechanism; 401, Disc; 402, slot; 403, U-shaped rod; 404, block; 405, swing rod; 406, counterweight; 407, connecting shaft; 408, paddle; 409, first limit block; 410, torsion spring; 50, reset mechanism; 501, elastic rod; 502, spring; 503, extrusion block; 504, second limit block; 60, lifting mechanism; 601, connecting rod; 602, arc block; 603, L-shaped rod; 604, limit rod; 70, blowing mechanism; 701, air bag; 702, mounting rod; 703, air outlet; 704, hose; 705, bottom plate. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, 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. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] See Figures 1 to 10 A battery shell strength testing device of this embodiment includes a base 10. A synchronous testing mechanism 20 for performing multiple strength tests on the battery shell at the same time is provided on the top of the base 10. A rotating mechanism 30 for changing the direction of the battery shell is also provided on the top of the base 10.

[0037] The synchronous testing mechanism 20 includes a rotating disk 201 rotatably connected to the top of the base 10, and a bracket 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 bracket 209, and a grinding disk 203 for testing the strength of the battery shell is fixedly connected to the bottom of the hollow rod 202. An impact rod 204 is slidably connected inside the hollow rod 202, and the bottom of the impact rod 204 is pointed, and a through hole is opened in the middle of the grinding disk 203 for the bottom of the impact rod 204 to pass through. A limiting mechanism 40 is provided on the top of the rotating disk 201 to prevent the battery shell from shaking. A reset mechanism 50 is also provided on the top of the rotating disk 201 to control the limiting mechanism 40 to return to its original position after the battery shell rotates.

[0038] The synchronous testing mechanism 20 also includes a vertical rod 206 that is vertically slidably connected to the top of the bracket 209, a horizontal rod 205 is fixedly connected to the top of the vertical rod 206, and the end of the horizontal rod 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, and 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.

[0039] During the specific work, the battery casing to be tested is placed on the rotating disk 201, so that the grinding disk 203 is pressed down on the top of the casing, and then the rotating disk 201 is driven by an external motor to rotate horizontally at a uniform speed. At this time, the top of the casing and the grinding disk 203 rub against each other. After a period of friction, the degree of wear on the surface of the casing is observed to judge the wear resistance of the casing. When the rotating disk 201 rotates horizontally, the triangular block 208 pushes the roller 207 to move up along the inclined surface of the triangular block 208, and the upward roller 207 drives the impact rod 204 to move upward through the vertical rod 206 and the horizontal rod 205. Then, the impact rod 204 moves downward under the action of gravity and hits the top of the tested casing, thereby testing the impact resistance of the casing. Performing friction and impact resistance tests at the same time can obtain performance data of the casing under two different stress conditions in one experiment, reducing the time and cost required for repeated setting and executing separate tests. Since the rotating disk 201 rotates horizontally at a uniform speed, the speed of the impact rod 204 moving upward each time remains consistent, and the grinding disk 203 is also tested at the same speed.

[0040] The rotating mechanism 30 includes a mounting plate 301 symmetrically fixedly connected to the top of the rotating disk 201, and 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 groove wheel 309, and a round pin 308 is slidably connected in the groove of the groove wheel 309, and the round pin 308 is fixedly connected to the dial 307 through a connecting shaft. A mounting frame 311 is fixedly connected to the side of the mounting plate 301, and 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. An air blowing mechanism 70 for processing grinding debris is arranged between the two mounting plates 301, and 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 groove wheel 309 has four grooves.

[0041] The rotating mechanism 30 also includes an L-shaped support plate 303 fixedly connected to the other end of the rotating shaft 302. A screw 304 is fixedly connected to the top of the L-shaped support plate 303. A pressure plate 305 is slidably sleeved on the outside of the screw 304. A nut 306 is threadedly connected to the outside of the screw 304. A groove for accommodating the battery casing is provided on the surface of the horizontal section of the L-shaped support plate 303.

[0042] During the specific work, before the test, the battery shell to be tested is placed in the groove of the horizontal section of the L-shaped support plate 303, and then the nut 306 is tightened, and the nut 306 is used to drive the pressure plate 305 to fix the shell on the L-shaped support plate 303. After the friction and impact tests are performed on one surface of the shell, the servo motor 310 is started to rotate one circle, and the servo motor 310 drives the dial 307 and the round pin 308 to rotate one circle synchronously, and the round pin 308 drives the groove wheel 309 to rotate ninety degrees. The groove wheel 309 drives the battery shell to rotate ninety degrees synchronously through the rotating shaft 302, thereby changing the test surface of the battery shell. When changing the test surface of the battery shell, the two opposite surfaces of the battery shell are tested as a group, so as to keep the distance that the impact rod 204 drops each time the same, so as to ensure the accuracy of the test data. By testing different surfaces of the shell, more comprehensive data can be obtained, and the strength, rigidity and durability of the shell in all directions can be understood, which helps to discover possible weak links and improve the design.

[0043] The blowing mechanism 70 includes a mounting rod 702 fixedly connected between two mounting plates 301, a plurality of air outlets 703 are provided 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 is communicated with the air outlet 703, an 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, the bottom of the airbag 701 is fixedly connected to a base plate 705, and the base plate 705 is fixedly connected to the outside of the vertical rod 206.

[0044] During specific operation, when the rotating disk 201 rotates horizontally, the vertical rod 206 is driven 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 upward 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 outlet 703, thereby blowing the air to the surface of the battery shell and blowing away the debris generated by the friction of the shell surface. The clean shell surface can ensure that the subsequent thickness measurement and appearance inspection are more accurate and are not interfered by residual debris.

[0045] The lifting mechanism 60 includes a connecting rod 601 fixedly connected to the external output end of the servo motor 310, one end of the connecting rod 601 is fixedly connected to a semicircular arc block 602, the hollow rod 202 is fixedly connected to the external L-shaped rod 603, the vertical section of the L-shaped rod 603 is located above the arc block 602, and the impact rod 204 is fixedly connected to the limiting rod 604 externally.

[0046] During specific operation, when the rotating mechanism 30 is working, the servo motor 310 rotates and synchronously drives the connecting rod 601 to rotate, and the connecting rod 601 drives the arc block 602 to rotate. When the arc block 602 rotates to the highest point, the arc block 602 pushes the bottom of the vertical section of the L-shaped rod 603 upward, thereby pushing the hollow rod 202 upward. During the upward movement of the hollow rod 202, it is blocked by the limit rod 604, so that the hollow rod 202 drives the impact rod 204 to move upward synchronously during the rising process, so that the bottom of the grinding disc 203 and the impact rod 204 are a certain distance away from the battery casing, which can avoid unnecessary friction between the grinding disc 203 and the casing, reduce wear between the two, ensure that the grinding disc 203 is correctly separated from the casing surface, and avoid surface scratches or other damage caused by improper operation.

[0047] The limiting mechanism 40 includes a disc 401 fixedly connected to the outside of the rotating shaft 302, and a plurality of slots 402 are provided at equal angles on the outside of the disc 401. A U-shaped rod 403 fixedly connected to the side of the mounting plate 301 is provided directly below the disc 401. A block 404 is slidably connected inside the U-shaped rod 403, and the block 404 engages with one of the slots 402.

[0048] A swing rod 405 rotatably connected to the U-shaped rod 403 is provided at the bottom of the U-shaped rod 403, a counterweight block 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, and a paddle 408 is rotatably connected to the outside of the connecting shaft 407 for driving the block 404 to move in the U-shaped rod 403.

[0049] 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 paddle 408, and the top side of the swing rod 405 is fixedly connected to the first limit block 409 for limiting the rotation angle of the paddle 408.

[0050] During specific operation, during the rotation of the rotating disk 201, the counterweight block 406 at the bottom of the swing arm 405 causes the swing arm 405 to rotate under the action of centrifugal force. At this time, the paddle 408 at the top of the swing arm 405 deviates to the other side of the block 404. Driven by the torsion force of the torsion spring 410, the paddle 408 always deviates to the direction of the first limit block 409. After the rotating disk 201 stops rotating, the deflected swing arm 405 needs to be restored to a vertical state. At this time, the paddle 408 is blocked by the bottom of the block 404. During the process of the swing arm 405 returning to vertical, the block 404 is pushed by the paddle 408 and moves along the U-shaped rod 403, thereby disengaging the block 404 from the slot 402. Then, the battery housing is driven to rotate ninety degrees through the rotating mechanism 30 to change the test surface.

[0051] The reset mechanism 50 includes an elastic rod 501 fixedly connected to the side of the blocking block 404. The elastic rod 501 horizontally passes through the hole on the side of the U-shaped rod 403 and extends to the bottom of the groove wheel 309. A spring 502 is sleeved on the outside of 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 the end of the elastic rod 501 away from the blocking block 404.

[0052] When the locking block 404 moves along the U-shaped rod 403, the locking 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 squeezed and contracted by the U-shaped rod 403 and the locking block 404 to store force. When the rotating mechanism 30 drives the battery shell to rotate ninety degrees, the rotating groove wheel 309 presses down the extrusion block 503 during the rotation process, and 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 the outside of the hole on the side of the U-shaped rod 403. Under the push of the elastic force of the spring 502, the locking block 404 re-enters the locking groove 402, thereby fixing the rotated shell, ensuring that the shell remains in the same position and angle during the entire test process, reducing variables caused by accidental rotation, and thus improving the consistency and accuracy of the test data.

[0053] Working principle:

[0054] The battery shell is fixed on the L-shaped support plate 303 of the rotating mechanism 30, and the friction and impact test is carried out by the synchronous testing mechanism 20. During the test, the blowing mechanism 70 is driven to blow away the debris generated by friction. After completing the test of one surface, the battery shell is driven to rotate ninety degrees by the rotating mechanism 30 to change the surface to be tested. When the rotating mechanism 30 is working, it first drives the limiting mechanism 40 to release the fixation of the shell. At the same time, the rotating mechanism 30 also pushes the grinding disc 203 and the impact rod 204 upward through the jacking mechanism 60, so that the grinding disc 203 and the impact rod 204 are temporarily out of contact with the shell. When the shell is rotated ninety degrees, the grinding disc 203 and the impact rod 204 are re-contacted with the shell under the action of gravity. When the shell is rotated ninety degrees, the reset mechanism 50 drives the limiting mechanism 40 to fix the rotated shell again.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery shell strength testing device, characterized in that: It comprises a base (10), the top of the base (10) is provided with a synchronous testing mechanism (20) for simultaneously performing multiple strength tests on the battery shell, and the top of the base (10) is also provided with a rotating mechanism (30) for changing the direction of the battery shell; The synchronous testing mechanism (20) comprises a rotating disk (201) rotatably connected to the top of the base (10), the top of the base (10) is also fixedly connected to a bracket (209), the top of the bracket (209) is vertically slidably connected to a hollow rod (202), the bottom of the hollow rod (202) is fixedly connected to a grinding disk (203) for testing the strength of the battery shell, 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 is provided in the middle of the grinding disk (203) for allowing the bottom of the impact rod (204) to pass through, a limiting mechanism (40) for preventing the battery shell from shaking is provided on the top of the rotating disk (201), and a reset mechanism (50) for controlling the limiting mechanism (40) to return to its original position after the battery shell rotates is also provided on the top of the rotating disk (201); The synchronous testing mechanism (20) further comprises a vertical rod (206) vertically slidably connected to the top of the bracket (209); the top of the vertical rod (206) is fixedly connected to a cross rod (205); one end of the cross rod (205) away from the vertical rod (206) is fixedly connected to the top of the impact rod (204); the bottom of the vertical rod (206) is fixedly connected to a roller (207); the top of the rotating disk (201) is fixedly connected to a triangular block (208), and the triangular block (208) is located directly below the roller (207).

2. A battery shell strength testing device according to claim 1, characterized in that: The rotating mechanism (30) comprises a mounting plate (301) symmetrically fixedly connected to the top of the rotating disk (201), each mounting plate (301) being horizontally rotatably connected to a rotating shaft (302), one end of one of the rotating shafts (302) being fixedly connected to a groove wheel (309), a round pin (308) being slidably connected in the groove of the groove wheel (309), the round pin (308) being fixedly connected to a dial (307) via a connecting shaft, a mounting frame (311) being fixedly connected to the side of the mounting plate (301), a servo motor (310) being fixedly connected to the top of the mounting frame (311), an output end of the servo motor (310) being fixedly connected to the dial (307), an air blowing mechanism (70) for processing grinding debris being provided between the two mounting plates (301), and a lifting mechanism (60) for driving the grinding disk (203) to rise vertically being provided on one side of the mounting plate (301).

3. A battery shell strength testing device according to claim 2, characterized in that: The rotating mechanism (30) further comprises an L-shaped supporting 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 supporting plate (303); 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); and a groove for accommodating a battery shell is provided on the surface of a horizontal section of the L-shaped supporting plate (303).

4. A battery shell strength testing device according to claim 2, 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 provided 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) and the air outlets (703) are communicated with each other, an end of the hose (704) away from the mounting rod (702) is fixedly connected to an air bag (701), the air bag (701) is fixedly connected to the bottom of the bracket (209), the bottom of the air bag (701) is fixedly connected to a bottom plate (705), and the bottom plate (705) is fixedly connected to the outside of the vertical rod (206).

5. A battery shell strength testing device according to claim 2, characterized in that: The lifting mechanism (60) includes a connecting rod (601) fixedly connected to the output end of the servo motor (310), one end of the connecting rod (601) is fixedly connected to a semicircular arc block (602), the hollow rod (202) is fixedly connected to an L-shaped rod (603) on the outside, the vertical section of the L-shaped rod (603) is located above the arc block (602), and the impact rod (204) is fixedly connected to a limiting rod (604) on the outside.

6. A battery shell strength testing device according to claim 1, characterized in that: The limiting mechanism (40) comprises a disc (401) fixedly connected to the outside of the rotating shaft (302), a plurality of slots (402) are provided on the outside of the disc (401) at equal angles, a U-shaped rod (403) fixedly connected to the side of the mounting plate (301) is provided directly below the disc (401), a block (404) is slidably connected to the inside of the U-shaped rod (403), and the block (404) is engaged with one of the slots (402).

7. A battery shell strength testing device according to claim 6, characterized in that: A swing rod (405) rotatably connected to the U-shaped rod (403) is provided 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), and a paddle (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).

8. A battery shell strength testing device according to claim 7, characterized in that: The connecting shaft (407) is further sleeved with a torsion spring (410), one end of which is fixedly connected to the outside of the connecting shaft (407), and the other end of which is fixedly connected to the paddle (408). The top side of the swing rod (405) is fixedly connected to a first limit block (409) for limiting the rotation angle of the paddle (408).

9. A battery shell strength testing device according to claim 1, characterized in that: The reset mechanism (50) comprises an elastic rod (501) fixedly connected to the side of the clamping block (404), the elastic rod (501) horizontally passing through the hole on the side of the U-shaped rod (403) and extending to the bottom of the groove wheel (309), the elastic rod (501) is sleeved with a spring (502) on the outside, and the spring (502) is located inside the U-shaped rod (403), the elastic rod (501) is also fixedly connected to the outside of the second limit block (504), and the elastic rod (501) is fixedly connected to the extrusion block (503) at one end away from the clamping block (404).

Images