A device for testing falling and heavy impact of battery cell
By designing an integrated device for cell drop and heavy object impact testing, and utilizing detachable limiting posts and replaceable counterweights, the device integrates drop and heavy object impact testing, solving the problems of single equipment function and high maintenance costs, and ensuring test accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SVOLT ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-21
AI Technical Summary
Existing drop test equipment and heavy object impact equipment have limited functions and need to be purchased separately, resulting in high maintenance costs and the cells are prone to deflection during the drop process.
Design an integrated device for battery cell drop and heavy object impact testing. The device achieves the switching between drop test and heavy object impact modes through detachable limiting posts and replaceable counterweights. It integrates traction devices, clamping components and sensors in the test box to ensure accurate landing of battery cells.
It enables cell drop testing and heavy object impact testing to be performed on the same equipment, reducing equipment purchase and maintenance costs and ensuring testing accuracy.
Smart Images
Figure CN224535358U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a battery test technical field especially relates to a kind of electric core drop, heavy impact test integrated device. BACKGROUND
[0002] Battery belongs to high-density energy storage device, and battery is widely used, and once accident occurs, it is lightly to affect equipment use, and it is heavily to possibly cause explosion combustion;At present, many electrical products are configured with battery as power supply or as backup power supply, if the electrical product is used in relatively harsh environment, for example, collision, extrusion, impact often occurs, then the reliability requirement of battery is higher under the use environment, to prevent battery from exploding or breaking and leaking under extrusion or impact, to cause damage to people or things.Some lithium battery safety standards explicitly require that battery needs to pass drop test and heavy impact test to ensure its safety and reliability.
[0003] The following two independent devices are generally used in the current industry to complete the test:
[0004] Battery drop test device: through the release mechanism of adjustable height, battery free fall impact rigid plane is verified, and the impact resistance of battery shell and internal structure is verified;
[0005] Battery heavy impact test device: specific mass heavy object is vertically impacted on battery surface using guide rail or mechanical arm drive, and the safety performance of battery under local pressure is evaluated.
[0006] The drop test and heavy impact test test device used in the current market can only realize single function, if drop and heavy impact two tests are carried out, two independent devices need to be purchased and maintained respectively, so as to cause high cost.
[0007] Furthermore, the electric core drop test device lacks control in the process of electric core falling, so that electric core is prone to deflection in the process of falling.
[0008] The information disclosed in the background section of this document is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as recognizing or implying in any form that the information has been constructed as prior art known to those skilled in the art. UTILITY MODEL CONTENT
[0009] The technical problem to be solved by the utility model is that how to solve the problem that drop test equipment and heavy impact equipment in prior art can only be radially dropped and tested and tested by heavy impact, and the function is single, and the maintenance cost is high.
[0010] The utility model solves the above technical problems by the following technical means:
[0011] A battery cell drop and heavy object impact testing integrated device includes a test box, a traction device, a traction block, a moving block, a clamping assembly, a limiting post, and a first sensor. The traction device is connected to the top of the test box, the end of the traction device is connected to the traction block, the bottom of the traction block is detachably connected to the moving block, and the bottom of the moving block is connected to the clamping assembly. The limiting post is detachably installed at the bottom of the test box, and the first sensor is installed above the limiting post.
[0012] In this invention, during drop testing, a limiting post is installed, and the battery cell under test is clamped onto the clamping assembly. The traction block and the moving block remain connected. The traction device pulls the traction block, the moving block, the clamping assembly, and the battery cell under test to the designed height. The moving block separates from the traction block. When the traction block falls to the position of the first sensor, the clamping assembly releases the battery cell under test, and the traction block is supported by the limiting post. The battery cell under test falls off the clamping assembly and touches the bottom, completing the test. During heavy object testing, the limiting post is removed, and a suitable counterweight is clamped onto the clamping assembly. The traction device pulls the traction block, the moving block, the clamping assembly, and the counterweight to the designed height, and the battery cell under test is placed on the bottom of the test chamber. After the test begins, the moving block separates from the traction block, and the moving block, along with the counterweight, falls freely. The counterweight impacts the battery cell under test, completing the test.
[0013] This invention provides a single-unit device that simultaneously meets the requirements of GB / T 31485 drop test and GB 44240 heavy object impact test. A detachable limiting post and replaceable counterweight enable switching between drop test and heavy object impact modes; it allows for the use of the same equipment for both cell drop testing and heavy object impact testing, reducing equipment purchase and maintenance costs.
[0014] Preferably, the test chamber includes a chamber body, a door, and a partition. The door is hinged to one side of the chamber body, and the partition is connected to the top of the chamber body.
[0015] The test components are integrated into the test chamber. During testing, the chamber door is closed to ensure the safety of the personnel. The partition facilitates the installation of the traction device.
[0016] Preferably, the traction device includes a traction rope and a motor. The motor is fixedly connected to the partition, and the rotating shaft of the motor is connected to one end of the traction rope. The traction rope is partially wound around the rotating shaft of the motor, and the traction rope passes vertically downward through the partition and is connected to the traction block.
[0017] Preferably, the bottom surface of the traction block is connected to an electromagnet, and the top surface of the moving block is connected to an iron block, with the electromagnet connected to or separated from the iron block.
[0018] Preferably, the clamping component is either a robotic arm or a negative pressure suction cup.
[0019] Preferably, the limiting post is connected to the bottom plate of the box by a thread or a snap-fit.
[0020] Preferably, the height of the top surface of the limiting post from the bottom surface of the test box is greater than the sum of the heights of the clamping component and the battery cell under test; the vertical projection of the limiting post on the bottom surface of the test box falls on both ends of the vertical projection of the moving block on the bottom surface of the test box; and the vertical projection of the limiting post on the bottom surface of the test box does not coincide with the vertical projection of the clamping component on the bottom surface of the test box.
[0021] Preferably, it also includes guide columns, which are arranged along the height direction of the test box, and both ends of the traction block and the moving block are slidably connected to the guide columns.
[0022] The guide post allows the battery cell to be fixed in shape during drop testing, ensuring a precise landing.
[0023] Preferably, the top of the guide post is connected to the top of the test box, and the limiting post is detachably connected to the bottom of the guide post, forming a limiting step between the limiting post and the guide post.
[0024] Preferably, it also includes a second sensor for obtaining the height of the traction block, the second sensor being connected to the top of the inside of the test box.
[0025] The advantages of this utility model are:
[0026] This utility model is a single-unit device that simultaneously meets the requirements of GB / T 31485 drop test and GB 44240 heavy object impact test. A detachable limiting post and replaceable counterweight enable switching between drop test and heavy object impact modes; it allows for the use of the same equipment for both cell drop testing and heavy object impact testing, reducing equipment purchase and maintenance costs. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the integrated device for cell drop and heavy object impact testing in this embodiment of the present invention.
[0028] Figure 2 This is a front view of the integrated device for battery cell drop and heavy object impact testing in this embodiment of the present invention;
[0029] Figure 3 This is the cell drop test process in the embodiment of this utility model. Figure 1 ;
[0030] Figure 4 This is the cell drop test process in the embodiment of this utility model. Figure 2 ;
[0031] Figure 5 This is the heavy object impact test process in the embodiment of this utility model. Figure 1 ;
[0032] Figure 6 This is the heavy object impact test process in the embodiment of this utility model. Figure 2 ;
[0033] Figure 7 This is a schematic diagram of the integrated device for cell drop and heavy object impact testing in this embodiment of the present invention.
[0034] Numbering on the map:
[0035] 1. Test chamber; 11. Chamber body; 12. Chamber door; 13. Partition; 14. Window; 15. Guide column; 16. Second sensor;
[0036] 2. Traction device; 21. Traction rope; 22. Motor;
[0037] 3. Traction block; 31. Electromagnet;
[0038] 4. Moving block; 41. Iron block;
[0039] 5. Clamping components;
[0040] 6. Limiting post;
[0041] 7. First sensor;
[0042] 8. The battery cell to be tested;
[0043] 9. Counterweight. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0045] Example 1:
[0046] like Figure 1 , Figure 2 As shown, and refer to Figure 3 , Figure 4As shown, an integrated device for battery cell drop and heavy object impact testing includes a test box 1, a traction device 2, a traction block 3, a moving block 4, a clamping assembly 5, a limiting post 6, and a first sensor 7. The traction device 2 is connected to the top of the test box 1. The traction end of the traction device 2 is retractably connected to the traction block 3. The bottom of the traction block 3 is connected to or detached from the top of the moving block 4. The bottom of the moving block 4 is connected to the clamping assembly 5. The limiting post 6 is detachably connected to the bottom of the test box 1, and the first sensor 7 is connected to the top of the limiting post 6. The limiting post 6 is installed during drop testing and removed during heavy object impact testing.
[0047] Specifically, the test box 1 includes a box body 11 and a door 12. In this embodiment, the test box 1 has a rectangular box structure with a large height dimension. One side of the box body 11 is empty, and one side of the door 12 can be connected to the opening of the box body 11 via a hinge. When installing the battery cell 8 to be tested or during debugging, the door 12 is opened; during testing, the door 12 is closed to ensure that personnel will not be injured during testing. The interior of the box body 11 is divided into two layers by a horizontally arranged partition 13, with the upper layer having a smaller space and the lower layer having a larger space. A through hole is opened in the middle of the partition 13, and the traction device 2 is installed on the partition 13. The end of the traction device 2 is a traction rope 21, which can pass through the through hole in the partition 13 and connect to the traction block 3. A window 14 is opened on the door 12, and a glass plate is installed in the window 14 for personnel to observe during testing. This embodiment is not limited to the specific shape and structure of the box body 11.
[0048] In this embodiment, the traction device 2 includes a traction rope 21 and a motor 22. The traction rope 21 is wound around the end of the motor 22, allowing the traction rope 21 to move up and down under the rotation of the motor 22. For example, rotating the motor 22 clockwise will cause the traction rope 21 to rise, and rotating it counterclockwise will cause the traction rope 21 to fall; the reverse is also possible. In this embodiment, the traction end of the traction device 2 is the end of the traction rope 21. A turntable can also be connected to the rotating shaft of the motor 22, and the traction rope 21 is wound around the turntable, which can be used to store the traction rope 21. The traction rope 21 is not limited and can be nylon rope, steel wire, etc.
[0049] Of course, the traction device 2 can also be other mechanisms that can achieve lifting, such as a pneumatic piston system. The telescopic end of the pneumatic piston system is connected to the traction block 3, and the lifting height is controlled by air pressure, and a solenoid valve is used to achieve rapid release.
[0050] The traction block 3 can be a flat plate. The top surface of the traction block 3 is preferably fixedly connected to the center of the traction rope 21 to keep the traction block 3 as horizontal as possible. The bottom surface of the traction block 3 is preferably connected to the center of the electromagnet 31, which can be connected to the iron block 41 on the top of the moving block 4.
[0051] The movable block 4 can be a flat plate, and preferably, the iron block 41 is connected to the center of its top surface. In this embodiment, the electromagnet 31 generates magnetism when energized, which attracts the iron block 41. When the electromagnet 31 is de-energized, it loses its magnetic force and can release the iron block 41. Furthermore, this embodiment is not limited to the number of electromagnets 31 and iron blocks 41. When there are multiple electromagnets 31 and iron blocks 41, they should be distributed as evenly as possible to ensure uniform force distribution.
[0052] In addition to the combination of setting an electromagnet 31 on the traction block 3 and setting an iron block 41 on the moving block 4, the iron block 41 can also be replaced with an electromagnet, which can achieve the effect of attracting first when energized and separating when de-energized.
[0053] The clamping component 5 can be a robotic arm, a negative pressure suction cup, or any clamping mechanism capable of clamping and releasing the battery cell 8 under test. Any existing technology can be used.
[0054] The limiting post 6 is detachably mounted at the bottom of the test chamber 1. It can be directly connected to the test chamber 1 or connected to other structural components, but it remains located at the bottom of the test chamber 1. In this embodiment, the limiting post 6 can be detachably connected to a threaded hole on the bottom plate of the chamber 11 by having threads on its bottom. The height of the top surface of the limiting post 6 from the bottom surface of the chamber 11 is greater than the sum of the heights of the clamping assembly 5 and the battery cell 8 under test. This ensures that the clamping assembly 5 does not contact the bottom surface of the chamber 11 when the moving block 4 is supported by the limiting post 6. The limiting post 6 can also be connected to the chamber 11 by plugging or other methods. In this embodiment, the limiting post 6 is not limited to a columnar structure. If it is threaded to the chamber 11, the bottom of the limiting post 6 can be a columnar structure, while the top can be a plate-like structure, ensuring that the top surface of the limiting post 6 can support the moving block 4. There are at least two limit posts 6, which are located on both sides of the housing 11 and can support both sides of the moving block 4 at the same time.
[0055] The vertical projection of the limiting post 6 on the bottom surface of the housing 11 falls on both ends of the vertical projection of the moving block 4 on the bottom surface of the housing 11. Moreover, the vertical projection of the limiting post 6 on the bottom surface of the housing 11 does not coincide with the vertical projection of the clamping component 5 on the bottom surface of the housing 11, that is, the limiting post 6 and the clamping component 5 do not interfere with each other at all.
[0056] The first sensor 7 is positioned above the limiting post 6. It can be directly connected to the top of the limiting post 6, or it can be indirectly positioned above the limiting post 6 via other structural components. In this embodiment, the first sensor 7 is directly connected to the top of the limiting post 6. The first sensor 7 is a grating sensor, which can be connected to the control system. After detecting the moving block 4, the grating sensor transmits a signal to the control system, which then controls the clamping assembly 5 to release the battery cell 8 under test.
[0057] like Figure 3 As shown, this embodiment performs a drop test, starting as follows: Figure 3 As shown, the battery cell 8 under test is clamped on the clamping assembly 5 to prevent it from falling. When the electromagnet 31 is energized, it generates a magnetic force that attracts the iron block 41, maintaining the connection between the traction block 3 and the moving block 4. Driven by the traction device 2 via the traction rope 21, the traction block 3, the moving block 4, the clamping assembly 5, and the battery cell 8 under test are moved to the designed height. Once the designed height is reached, the traction device 2 remains stationary, locking the position of the battery cell 8 under test. The limiting post 6 and the first sensor 7 are installed inside the housing 11. After the test begins, the electromagnet 31 is de-energized, and the moving block 4 falls freely. When the moving block 4 falls to the position of the first sensor 7, the control system controls the clamping assembly 5 to release the battery cell 8 under test. The moving block 4 is supported on the top of the limiting post 6, and the battery cell 8 falls off the clamping assembly 5. After touching the bottom, the test is complete. After the test, as shown... Figure 4 .
[0058] like Figure 5 As shown in the figure, when performing the weight test in this embodiment, the test begins as follows: Figure 5 As shown, the limiting post 6 and the first sensor 7 are disassembled and removed from the housing 11. According to the test requirements, a suitable counterweight 9 is selected and clamped in the clamping assembly 5, ensuring the counterweight 9 does not fall. The electromagnet 31 is energized, generating magnetic force that attracts the iron block 41, maintaining the connection between the traction block 3 and the moving block 4. Driven by the traction device 2 via the traction rope 21, the traction block 3, moving block 4, clamping assembly 5, and counterweight 9 are moved to the designed height. After reaching the designed height, the traction device 2 remains stationary, locking the position of the counterweight 9. The battery cell 8 to be tested is placed on the bottom surface of the housing 11. After the test begins, the electromagnet 31 is de-energized, and the moving block 4, along with the counterweight 9, falls freely. The counterweight 9 impacts the battery cell 8 to be tested. Figure 6 As shown, the test is complete.
[0059] This embodiment is a single-unit device that simultaneously meets the requirements of GB / T 31485 drop test and GB 44240 heavy object impact test. A detachable limiting post and replaceable counterweight enable switching between drop test and heavy object impact modes; it allows both cell drop tests and heavy object impact tests to be performed on the same equipment, reducing equipment purchase and maintenance costs.
[0060] In this embodiment, the limit post 6 is disassembled and installed to realize drop test and heavy object test respectively. Alternatively, two sets of test devices can be integrated in the housing 11, one for drop test and one for heavy object test. The two sets of test devices are arranged in parallel. The limit post 6 and the first sensor 7 are not needed in the drop test, while the limit post 6 and the first sensor 7 are installed in the heavy object test. The cost is reduced by sharing the sensor and control system.
[0061] Example 2:
[0062] like Figure 1 , Figure 2 As shown, this embodiment, based on embodiment one, also includes guide posts 15. There are at least two guide posts 15. The guide posts 15 are arranged along the height direction of the test box 1. The top of the guide post 15 is connected to the bottom surface of the partition 13. The bottom of the guide post 15 can be connected to the bottom surface of the box 11 or not, as long as the length of the guide post 15 meets the travel requirements of the moving block 4.
[0063] Both the moving block 4 and the traction block 3 have holes that match the outer dimensions of the guide post 15. The guide post 15 passes through the traction block 3 and the moving block 4, allowing the traction block 3 and the moving block 4 to move along the axial direction of the guide post 15. If the guide post 15 is a cylinder, the holes on the moving block 4 and the traction block 3 are circular, with the inner diameter of the circular hole slightly larger than the outer diameter of the cylinder. If the guide post 15 is a square post, the holes on the moving block 4 and the traction block 3 are square, with the size of the square hole slightly larger than the outer dimension of the square post. That is, the shape and size of the holes on the guide post 15, the moving block 4, and the traction block 3 are matched, allowing the moving block 4 to slide along the traction block 3 and the guide post 15 with a small gap. The gap should not be too large to avoid skewing.
[0064] In this embodiment, whether it is a drop test or a heavy object test, the traction block 3 and the moving block 4 are both restricted by the guide column 15 during the lifting and lowering process, so that the two can only move axially.
[0065] This embodiment enables the battery cell to maintain its shape during drop testing, ensuring precise landing.
[0066] Example 3:
[0067] like Figure 7 As shown, the difference between this embodiment and embodiment two is that the limiting post 6 is set at the bottom of the test box 1 in a different way.
[0068] In this embodiment, the limiting post 6 is connected to the guide post 15. The outer diameter of the limiting post 6 is larger than the outer diameter of the guide post 15. The limiting post 6 is connected to the bottom of the guide post 15. Due to the difference in their outer diameters, a limiting step structure is formed between the guide post 15 and the limiting post 6. This structure can be stopped when the moving block 4 slides to the step, and the minimum limit position of the falling moving block 4 can still be achieved.
[0069] Since the limiting post 6 is not needed during heavy object testing, the limiting post 6 and the guide post 15 are made detachable, such as the limiting post 6 being connected to the bottom of the guide post 15 by a thread, or the two being connected by a snap-fit mechanism.
[0070] Based on this, the guide post 15 can be configured to be height-adjustable. For example, a cylinder or hydraulic cylinder can be connected to the top of the guide post 15, and the cylinder or hydraulic cylinder can be directly connected to the partition. The telescopic end of the cylinder or hydraulic cylinder is arranged vertically. Through the extension and retraction of the cylinder, the height of the bottom limiting post 6 of the guide post 15 can be adjusted, thereby adapting to different battery cells 8 under test. For example, if the battery cell 8 under test is relatively tall, the cylinder extension length should be shorter and the top surface height of the limiting post 6 should be higher to accommodate the taller battery cell 8 under test. Conversely, if the battery cell 8 is relatively short, the cylinder extension length should be longer.
[0071] In this case, there is no need to disassemble or assemble the limit post 6. It is only necessary to extend the cylinder to a longer length so that when the moving block 4 impacts the battery cell 8 under test during the heavy object impact test, it is still within the stroke of the guide post 15.
[0072] In this embodiment, the height of the limiting post 6 still needs to be greater than the sum of the heights of the clamping assembly 5 and the battery cell 8 to be tested.
[0073] In this embodiment, the first sensor 7 can be embedded at the bottom of the guide post 15, still satisfying the requirement that the first sensor 7 is located above the limiting post 6.
[0074] Example 4:
[0075] like Figure 1 , Figure 2 As shown, this embodiment, based on embodiment one, also includes a second sensor 16, which is installed on the bottom surface of the partition 13.
[0076] The second sensor 16 is a distance sensor, which is used to obtain the height of the traction block 3 in real time so as to control the action and stop of the traction device 2.
[0077] Specifically, such as Figure 3As shown, in this embodiment, a drop test is performed. The battery cell 8 under test is clamped on the clamping assembly 5 to prevent it from falling. The electromagnet 31 is energized, generating magnetic force that attracts the iron block 41, maintaining the connection between the traction block 3 and the moving block 4. The traction device 2, driven by the traction rope 21, moves the traction block 3, the moving block 4, the clamping assembly 5, and the battery cell 8 under test to the designed height. During this process, the height of the traction block 3 is monitored in real time by a distance sensor. When the traction block 3 reaches the preset height value, the traction device 2 is locked, thus locking the position of the battery cell 8 under test. The limiting post 6 and the first sensor 7 are installed inside the housing 11. After the test begins, the electromagnet 31 is de-energized, and the moving block 4 falls freely. When the moving block 4 falls to the position of the first sensor 7, the control system controls the clamping assembly 5 to release the battery cell 8 under test. The moving block 4 is supported on the top of the limiting post 6, and the battery cell 8 falls off the clamping assembly 5. After hitting the bottom, the test is completed. After the test, as shown... Figure 4 .
[0078] like Figure 5 As shown in the figure, when performing the weight test in this embodiment, the test begins as follows: Figure 5 As shown, the limiting post 6 and the first sensor 7 are disassembled and removed from the housing 11. According to the test requirements, a suitable counterweight 9 is selected and clamped in the clamping assembly 5 to prevent it from falling. The electromagnet 31 is energized, generating magnetic force that attracts the iron block 41, maintaining the connection between the traction block 3 and the moving block 4. The traction device 2, driven by the traction rope 21, moves the traction block 3, the moving block 4, the clamping assembly 5, and the counterweight 9 to the designed height. During this process, the height of the traction block 3 is monitored in real time by the distance sensor. When the traction block 3 reaches the preset height value, the traction device 2 is locked, thus locking the position of the counterweight 9. The battery cell 8 to be tested is placed on the bottom surface of the housing 11. After the test begins, the electromagnet 31 is de-energized, and the moving block 4, along with the counterweight 9, falls freely. The counterweight 9 impacts the battery cell 8 to be tested. Figure 6 As shown, the test is complete.
[0079] It should be noted that if motor 22 is a servo motor, the use of the second sensor 16 can be omitted.
[0080] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A device integrating cell drop and heavy object impact testing, characterized in that, It includes a test box, a traction device, a traction block, a moving block, a clamping assembly, a limiting post, and a first sensor; the traction device is connected to the top of the test box, the end of the traction device is connected to the traction block, the bottom of the traction block is detachably connected to the moving block, and the bottom of the moving block is connected to the clamping assembly; the limiting post is detachably set at the bottom of the test box, and the first sensor is set above the limiting post.
2. The integrated device for cell drop and heavy object impact testing according to claim 1, characterized in that, The test chamber includes a chamber body, a door, and a partition. The door is hinged to one side of the chamber body, and the partition is connected to the top of the chamber body.
3. The integrated device for cell drop and heavy object impact testing according to claim 2, characterized in that, The traction device includes a traction rope and a motor. The motor is fixedly connected to the partition plate. The rotating shaft of the motor is connected to one end of the traction rope. The traction rope is partially wound around the rotating shaft of the motor. The traction rope passes vertically downward through the partition plate and is connected to the traction block.
4. The integrated device for cell drop and heavy object impact testing according to claim 1, characterized in that, The bottom surface of the traction block is connected to an electromagnet, and the top surface of the moving block is connected to an iron block. The electromagnet can be connected to or separated from the iron block.
5. The integrated device for cell drop and heavy object impact testing according to claim 1, characterized in that, The clamping component can be either a robotic arm or a negative pressure suction cup.
6. The integrated device for cell drop and heavy object impact testing according to claim 1, characterized in that, The limiting post is connected to the bottom plate of the box by thread or snap-fit.
7. The integrated device for cell drop and heavy object impact testing according to claim 1, characterized in that, The height of the top surface of the limiting post from the bottom surface of the test box is greater than the sum of the heights of the clamping component and the cell under test; the vertical projection of the limiting post on the bottom surface of the test box falls on both ends of the vertical projection of the moving block on the bottom surface of the test box; and the vertical projection of the limiting post on the bottom surface of the test box does not coincide with the vertical projection of the clamping component on the bottom surface of the test box.
8. The integrated device for cell drop and heavy object impact testing according to claim 1, characterized in that, It also includes guide columns, which are arranged along the height of the test box, and both ends of the traction block and the moving block are slidably connected to the guide columns.
9. The integrated device for cell drop and heavy object impact testing according to claim 8, characterized in that, The top of the guide post is connected to the top of the test box, and the limiting post is detachably connected to the bottom of the guide post, forming a limiting step between the limiting post and the guide post.
10. The integrated device for cell drop and heavy object impact testing according to claim 1, characterized in that, It also includes a second sensor for obtaining the height of the traction block, which is connected to the top of the test chamber.