Falling test tool
The portable drop test fixture addresses inefficiencies and safety concerns of traditional tests by providing precise control over drop conditions, enabling safe and reliable battery testing in various environments.
Patent Information
- Application Number
- CN202421050113.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-15
AI Technical Summary
Traditional lithium-ion battery drop tests are inefficient, require laboratory settings, and pose safety risks due to fixed equipment and human operation, with the drop angle being a significant challenge.
A portable drop test fixture with a built-in battery power source, infrared remote control, and a gear-based angle adjustment mechanism, allowing for precise control of drop height and angle, enabling tests in various environments and reducing operational risks.
Enables safe, accurate, and flexible battery drop tests in diverse locations, ensuring structural integrity and safety by minimizing direct contact and controlling drop forces, thus enhancing test reliability and reproducibility.
Smart Images
Figure CN222212183U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a drop test tool. Background Art
[0002] In the production process of lithium batteries, in addition to testing the various electrochemical performance indicators of lithium batteries, their safety performance is also particularly important. Battery safety testing includes a variety of different experiments and testing methods. Among them, the drop test experiment is a key project to evaluate the safety and structural integrity of batteries in the event of accidental drops or collisions. This test simulates the various physical impacts that the battery may encounter during daily use, helping manufacturers predict and improve the performance of batteries under extreme conditions.
[0003] At present, in the production process of lithium batteries, in addition to testing the various electrochemical performance indicators of lithium batteries, their safety performance is also particularly important. Battery safety testing includes drop tests. Traditional drop tests must be carried out in laboratories. The location of experimental equipment is fixed and cannot simulate the testing requirements in natural environments. It also requires close operation by people, which is dangerous. The drop angle has always been a pain point in the testing process. Utility Model Content
[0004] The purpose of the utility model is to provide a drop test tool to solve the problem of low efficiency of traditional lithium-ion battery drop test proposed in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drop test fixture, which includes a base plate, a first bearing seat, a first bevel gear and a height lifting screw, a first bearing seat is arranged at the upper end of the base plate, a first bevel gear is installed inside the first bearing seat, a height lifting screw is connected above the first bevel gear, a first controller is fixed to the top of the height lifting screw, a first motor is installed next to the first controller, an output shaft of the first motor is connected to a battery clamp, a spherical bearing is assembled below the battery clamp, a second controller is connected to the outer ring of the spherical bearing, an angle fine-tuning mechanism mounting plate is fixed next to the second controller, a third controller is fixed at the upper end of the angle fine-tuning mechanism mounting plate, a bevel gear is installed above the third controller, a second motor is connected to the side of the bevel gear, a height lifting screw connecting shaft is connected to the output end of the second motor, a second bearing seat is installed at one end of the height lifting screw connecting shaft, the second bearing seat is fixed to the height adjustment mechanism mounting plate, and a slide rail is provided on the side of the height adjustment mechanism mounting plate.
[0006] Preferably, a scale pointer is provided next to the slide rail, the scale pointer is aligned with the scale, and a screw slider is installed next to the scale, allowing the operator to accurately adjust or confirm the height of the drop test by intuitively reading the scale and the scale pointer, thereby providing more accurate testing conditions.
[0007] Preferably, a large gear is fixed above the screw slider, a second motor mounting plate is connected to the side of the large gear, a battery positioning plate is arranged above the second motor mounting plate, and a small gear is arranged on the large gear. The interaction between the large gear and the small gear allows for more precise adjustment and control of the drop angle, providing more flexibility and accuracy for testing.
[0008] Preferably, the battery positioning plate is connected to the battery clamping mechanism mounting plate via a first pin, and a bearing is arranged inside the first pin, thereby enhancing the flexibility and reliability of the entire structure and ensuring that the position and clamping state of the battery can remain stable during a drop test.
[0009] Preferably, a sliding plate is provided below the battery clamping mechanism mounting plate, a third motor mounting plate is installed below the sliding plate, and a third motor is installed on the third motor mounting plate.
[0010] The output shaft of the third motor is connected with a clamping gear, and an angle adjustment shaft is fixed beside the clamping gear.
[0011] Preferably, both ends of the angle adjustment shaft are connected to the clamp and the clamping connecting plate respectively.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The drop test fixture is designed to be independent of conventional power and gas sources and is powered by a built-in battery unit, making the device not only easy to operate but also extremely portable. This feature allows battery drop tests to be performed at any location, including natural conditions far away from traditional laboratory environments. This design provides great convenience for testing the practical application and durability of batteries in a changing external environment, and effectively expands the applicable scenarios of testing work;
[0014] 2. The drop test fixture uses infrared remote sensing technology, which allows the operator to control the entire test process from a safe distance, avoiding direct contact with batteries that may be damaged or exploded due to falling, greatly reducing operational risks. This technical application not only improves the safety of the test, but also protects the operator from potential dangers, especially when dealing with unstable or damaged batteries.
[0015] 3. The drop angle adjustment mechanism of the drop test fixture adopts the method of small gear driving large gear, so that even if the motor rotates with a large amplitude, the actual rotation angle of the clamping device can be carefully controlled within a small range, thereby accurately achieving fine-tuning of the drop angle. This design optimizes the accuracy of the drop test and allows researchers to set and reproduce specific test conditions to meet detailed and strict test standards.
[0016] 4. The drop test fixture uses a combination of a connecting rod mechanism and a gear system to control the angle of rotation, effectively reducing the instantaneous force impact caused by the rotation of the motor. Through this mechanism, the force on the battery during the drop test is more gentle, reducing the damage or indentation that may be caused by excessive force directly acting on the battery. This not only improves the reliability of the test, but also protects the structural integrity of the battery itself, thereby ensuring the accuracy of the test results and the safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the clamp of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the clamping mechanism of the utility model;
[0019] Figure 3 This is a schematic diagram of the clamping mechanism principle of the utility model;
[0020] Figure 4 This is a schematic diagram of the height adjustment mechanism structure of the utility model;
[0021] Figure 5 It is a schematic diagram of the angle fine-tuning mechanism of the utility model.
[0022] In the figure: 1, bottom plate; 2, first bearing seat; 3, first bevel gear; 4, height lifting screw; 5, first controller; 6, first motor; 7, battery clamping plate; 8, joint bearing; 9, second controller; 10, angle fine-tuning mechanism mounting plate; 11, third controller; 12, second bevel gear; 13, second motor; 14, height lifting screw connecting shaft; 15, second bearing seat; 16, height adjustment mechanism mounting plate; 17, slide rail; 18, ruler pointer; 19, ruler; 20, screw slider; 21, large gear; 22, second motor mounting plate; 23, battery positioning plate; 24, first pin; 25, second pin; 26, battery clamping mechanism mounting plate; 27, sliding plate; 28, third motor mounting plate; 29, third motor; 30, third pin; 31, clamping gear; 32, angle adjustment shaft; 33, clamp; 34, clamping connecting plate; 35, small gear; 36, bearing. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-Figure 4 The utility model provides a technical solution: a drop test fixture, which includes a bottom plate 1, a first bearing seat 2, a first bevel gear 3, a height lifting screw 4, a first controller 5, a first motor 6, a battery clamp 7, a joint bearing 8, a second controller 9, an angle fine-tuning mechanism mounting plate 10, a third controller 11, a bevel gear 12, a second motor 13, a height lifting screw connecting shaft 14, a second bearing seat 15, a height adjustment mechanism mounting plate 16, a slide rail 17, a scale pointer 18, a scale 19, a screw slider 20, a large gear 21, a second motor mounting plate 22, a battery positioning plate 23, a first pin Pin 24, second pin 25, battery clamping mechanism mounting plate 26, sliding plate 27, third motor mounting plate 28, third motor 29, third pin 30, clamping gear 31, angle adjustment shaft 32, clamp 33, clamping connecting plate 34, pinion 35 and bearing 36, second controller 9 is connected to third motor 29 through wire, third motor drives joint bearing 8 to move through clamping gear 31, joint bearing is connected to battery clamp 7 through second pin 25, battery clamp is connected to clamping connecting plate 34 through first pin 24, so that battery clamp can rotate around clamping connecting plate through bearing 36. The third motor is mounted on the mounting plate of third motor mounting plate 28, the whole clamping mechanism is mounted on battery clamping mechanism mounting plate 26, connected to angle adjustment shaft 32 through clamp 33, and angle adjustment shaft can rotate.
[0025] The third controller 11 is installed on the height adjustment mechanism mounting plate 16, and is connected to the second motor 13 through a wire. The second motor is installed on the second motor mounting plate 22 around the bearing seat 15. Through the second bevel gear 12 and the first bevel gear 3, the height lifting connecting shaft 14 drives the height lifting screw 4. The screw slider 20 is installed on the sliding plate 27, and the sliding plate is fixed on the slide rail 17. The sliding plate is equipped with a scale pointer 18. The scale can read the height position during the height adjustment process. The entire transmission shaft is installed on the base plate 1 through the first bearing seat 2.
[0026] The first controller 5 is installed on the angle fine-tuning dark rotating plate and is connected to the first motor 6 through a wire. The first motor is installed on the angle fine-tuning mounting plate and is connected to the small gear 35. The first motor drives the small gear to drive the large gear 21. The angle adjustment shaft 32 is connected to the angle fine-tuning plate through the bearing 36 and the retaining spring. In this way, the first motor can drive the angle adjustment shaft through the gears, and the clamp 33 connects the angle adjustment shaft to the entire clamping mechanism.
[0027] Working principle: first turn on the switches on the first controller 5, the second controller 9 and the third controller 11, so that the remote control can control the rotation of the first motor 6, the second motor 13 and the third motor 29. The third motor mounting plate 28 is equipped with a clamping gear 31. When the gear rotates, the joint bearing 8 drives the battery clamping plate 7 to rotate, thereby clamping the battery. The battery positioning plate 23 ensures that the battery is parallel to the battery positioning plate when the battery is clamped horizontally, thereby controlling the battery's degree of freedom in the horizontal plane. Preferably, the rotation of the third motor 29 slows down the transmission speed due to the clamping gear 31, and the clamping speed is slow, which reduces the damage to the battery caused by sudden pressure. After the battery is clamped, the remote control controls the second motor 13 to rotate, and the second motor controls the first bevel gear 3, which is transmitted by the second bevel gear 12 to drive the clamping mechanism to move upward. We read the distance through the scale pointer 18 and the scale 19 on the height adjustment mechanism mounting plate 16 to ensure that the drop test is the height we want. Similarly, the remote control controls the first motor 6 to drive the gear mechanism to rotate, thereby controlling the rotation of the entire clamping device to control the drop angle of the battery. Preferably, the gear is driven by the small gear 35 to drive the large gear 21, which slows down the adjustment of the angle, thereby achieving fine-tuning of the angle.
[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.
Claims
1. A drop test fixture, comprising a base plate (1), a first bearing seat (2), a first bevel gear (3) and a height-raising screw rod (4), Features: A first bearing seat (2) is arranged at the upper end of the bottom plate (1), a first bevel gear (3) is installed inside the first bearing seat (2), a height-lifting screw rod (4) is connected above the first bevel gear (3), a first controller (5) is fixed to the top of the height-lifting screw rod (4), a first motor (6) is installed next to the first controller (5), an output shaft of the first motor (6) is connected to a battery clamp (7), a joint bearing (8) is installed below the battery clamp (7), a second controller (9) is connected to the outer ring of the joint bearing (8), and an angle micro-rotor is fixed next to the second controller (9). An angle fine-tuning mechanism mounting plate (10) is provided, wherein a third controller (11) is fixed to the upper end of the angle fine-tuning mechanism mounting plate (10), a bevel gear (12) is installed above the third controller (11), a second motor (13) is connected to the side of the bevel gear (12), an output end of the second motor (13) is connected to a height-lifting screw connecting shaft (14), a second bearing seat (15) is installed at one end of the height-lifting screw connecting shaft (14), the second bearing seat (15) is fixed to the height-adjusting mechanism mounting plate (16), and a slide rail (17) is provided on the side of the height-adjusting mechanism mounting plate (16).
2. A drop test tool according to claim 1, Features: A scale pointer (18) is arranged next to the slide rail (17), and the scale pointer (18) is aligned with a scale (19). A screw slider (20) is installed next to the scale (19).
3. A drop test tool according to claim 2, Features: A large gear (21) is fixed above the screw slider (20), a second motor mounting plate (22) is connected to the side of the large gear (21), a battery positioning plate (23) is arranged above the second motor mounting plate (22), and a small gear (35) is arranged on the large gear (21).
4. A drop test fixture according to claim 3, Features: The battery positioning plate (23) is connected to the battery clamping mechanism mounting plate (26) via a first pin (24); the battery positioning plate (23) is connected to the battery clamping mechanism mounting plate (26) via a first pin (24); a bearing (36) is provided inside the first pin (24).
5. A drop test fixture according to claim 4, Features: A sliding plate (27) is provided below the battery clamping mechanism mounting plate (26), a third motor mounting plate (28) is mounted below the sliding plate (27), and a third motor (29) is mounted on the third motor mounting plate (28).
6. A drop test fixture according to claim 5, Features: The output shaft of the third motor (29) is connected to a clamping gear (31), and an angle adjustment shaft (32) is fixed next to the clamping gear (31).
7. A drop test fixture according to claim 6, Features: Both ends of the angle adjustment shaft (32) are respectively connected to the clamp (33) and the clamping connection plate (34).