A battery extrusion testing machine for lithium battery safety testing

Abstract

The invention discloses a battery extrusion tester for lithium battery safety detection, which relates to the technical field of lithium battery extrusion testing, and comprises a test table, wherein a die-casting placing table is slidably connected in the middle of the test table, a first cylinder is installed in the middle of the upper surface of the test table, a small driving cylinder is installed on the upper surface of the test table close to the first cylinder, and a second cylinder is installed on the outer surface of the test table, and a sliding tooth plate is engaged with an arc sliding tooth extrusion column to drive the arc sliding tooth extrusion column to extrude a clamping plate at a non-tooth surface, so that the clamping plate starts to gradually move upward and at the same time, the lithium battery can be pushed to the bottom of the clamping plate under the push of an L-shaped push plate, and the first push handle is pulled again to enable the clamping plate to quickly clamp the surface of the lithium battery, and the clamping action of the clamping plate can ensure that the position of the lithium battery is fixed during the extrusion process without movement or tilt, thereby ensuring that the extrusion force is evenly distributed on the battery, thereby improving the accuracy of the test result.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery extrusion testing, in particular to a battery extrusion testing machine for lithium battery safety testing. Background Art

[0002] As an important means to evaluate the safety performance of lithium batteries under extreme conditions, lithium battery extrusion test technology has a series of significant technical characteristics and application value. During the test, the battery is firmly clamped between two flat plates. As the extrusion force gradually increases, it is suddenly released after reaching the preset limit value. In this way, the tester can effectively evaluate the safety performance of the battery when it is subjected to external force extrusion, and whether dangerous situations such as explosion will occur.

[0003] However, in the existing lithium battery extrusion test, the lithium battery is usually placed directly under the extrusion plate for direct extrusion test. Since the battery cannot be effectively fixed under the extrusion plate during extrusion, the lithium battery will move or tilt during the extrusion process, resulting in uneven extrusion force distribution. This uneven extrusion force distribution cannot truly reflect the force conditions of the battery in actual use, thereby reducing the accuracy of the measurement results. Due to the non-fixed position of the battery, the mode and effect of the extrusion force may be different in each test, resulting in large differences in test results, which reduces the repeatability and comparability of the data and makes it difficult to evaluate the safety performance of the battery.

[0004] In addition, existing testing equipment can only perform extrusion tests in a single direction, but cannot perform multi-directional tests simultaneously or continuously. If the extrusion test can only be performed from one direction, it is impossible to fully evaluate the battery's ability to resist extrusion in different directions. At the same time, because the battery may be squeezed from multiple directions in actual use, the test results in a single direction may not accurately reflect the overall safety performance of the battery. Extrusion in different directions may have different effects on the internal structure of the battery, leading to different safety hazards. Testing in only one direction may ignore possible safety risks in other directions, resulting in measurement uniformity.

[0005] Therefore, the present invention proposes a battery extrusion testing machine for lithium battery safety testing to solve the above problems. Summary of the invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a battery extrusion testing machine for lithium battery safety testing to solve the problems in the prior art that the battery is not fixed resulting in inconsistent battery measurement data and the unidirectional test extrusion easily causes test inaccuracy.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a battery extrusion testing machine for lithium battery safety testing, comprising a test table, a die-casting placement table is slidably connected in the middle of the test table, a first cylinder is installed in the middle of the upper surface of the test table, a small driving cylinder is installed on the side of the upper surface of the test table close to the first cylinder, a second cylinder is installed on the outer surface of the test table, and also includes a detection clamping and feeding mechanism and an azimuth adjustment mechanism, the detection clamping and feeding mechanism is arranged on the die-casting placement table, and the azimuth adjustment mechanism is arranged on the inner wall of the test table; the detection clamping and feeding mechanism is used for clamping and fixing the lithium battery to prevent collapse during extrusion; the azimuth adjustment mechanism is used for adjusting the angle position of the die-casting placement table.

[0008] Preferably, the detection, clamping and feeding mechanism includes a first push handle, to which an L-shaped push plate is fixedly connected, and sliding tooth plates are fixedly connected at both ends of the bottom of the L-shaped push plate away from the first push handle, and sliding holes are symmetrically opened in the L-shaped push plate, and a push rod is slidably connected in the sliding hole of the L-shaped push plate.

[0009] Preferably, a return spring is sleeved on the outer surface of the push rod, one end of the return spring is fixedly connected to the L-shaped push plate, and the other end of the return spring is fixedly connected to a second push handle, and the second push handle is fixedly connected to the push rod.

[0010] Preferably, the push rod is fixedly connected to a push cleaning plate at one end away from the second push handle, and the bottom of the push cleaning plate slides on the upper surface of the die-casting placement table, wherein a cleaning block is fixedly arranged at the bottom of the push cleaning plate.

[0011] Preferably, the upper surface of the sliding tooth plate is evenly provided with sliding teeth, the bottom of the sliding tooth plate is slidably connected to the die-casting placement table, and the tooth surface of the sliding tooth plate is meshed with an arc-surface sliding tooth extrusion column.

[0012] Preferably, both ends of the arc-surface sliding gear extrusion column are rotatably connected to the die-casting placement table, a clamp is arranged above the arc-surface sliding gear extrusion column, a tension spring is evenly fixedly connected to the bottom of the clamp, and the end of the tension spring away from the clamp is fixedly connected to the upper surface of the die-casting placement table.

[0013] Preferably, the orientation adjustment mechanism comprises a push-pull plate, one end of which is fixedly connected to the driving shaft of a small driving cylinder, and the other end of the push-pull plate is symmetrically fixedly connected with square sliders on both sides, and the bottom of the push-pull plate is slidably connected to the inner wall of the test bench.

[0014] Preferably, the square slider is symmetrically slidably connected to the inner wall of the test table, the end of the square slider away from the push-pull plate is rotatably connected to an auxiliary plate, and the end of the auxiliary plate away from the square slider is rotatably connected to the die-casting placement table.

[0015] Preferably, the test table is fixedly connected with arc plates on both sides close to the die-casting placement table, an arc groove is opened in the middle of the arc plate, and a sliding column is slidably connected in the arc groove.

[0016] Preferably, the end of the slide column away from the arc groove is rotatably connected to a crank, and the end of the crank away from the slide column is rotatably connected to both sides of the die-casting placement table away from the auxiliary plate.

[0017] Compared with the prior art, the battery extrusion testing machine for lithium battery safety detection provided by the present invention has the following beneficial effects: 1. By detecting the setting of the clamping and feeding mechanism, the sliding tooth plate and the arc sliding tooth extrusion column can be engaged to drive the arc sliding tooth extrusion column to squeeze the tension spring at the non-tooth surface, so that the tension spring begins to gradually move upward. At the same time, the lithium battery can be pushed under the tension spring under the push of the L-shaped push plate, and pulling the first push handle again can make the tension spring quickly clamp the surface of the lithium battery. Compared with the prior art, which usually places the lithium battery directly on the test bench for extrusion, it is not only cumbersome to operate, but also difficult to ensure the stability and safety of clamping. The advantage of this solution lies in its innovative extrusion matching mechanism. Through the extrusion matching of the sliding tooth plate and the arc sliding tooth, it is achieved that the tension spring is driven to clamp the lithium battery while pushing the L-shaped push plate, which not only improves the flexibility of operation, but also enhances the stability and safety of clamping.

[0018] 2. In the prior art, during lithium battery testing, an extruder is used to directly perform an extrusion test on the surface of the lithium battery. When the extruder is in direct contact with the surface of the lithium battery, the contact area is limited and may be uneven, so the pressure of the extruder cannot be evenly transmitted to various parts of the lithium battery, especially at the edges and corners. Due to the differences in geometric shapes and contact methods, pressure concentration or loss is more likely to occur. The present invention uses a tension spring connected to a return spring to clamp the surface of the lithium battery. Because the tension spring serves as an intermediate medium, it can disperse the pressure of the extruder more evenly to various parts of the lithium battery. This dispersion effect can reduce the pressure concentration at the edges and corners, making the overall force on the lithium battery more uniform.

[0019] Compared with the existing technology of lithium battery testing, in the present invention, after the sliding tooth plate and the arc sliding tooth extrusion column are meshed with each other, the extrusion and tension springs at the non-tooth surface of the arc sliding tooth extrusion column can be driven to cooperate with each other, so that the extrusion plate can be firmly clamped on the surface of the lithium battery without loosening. It can not only provide a stable clamping force to prevent the lithium battery from moving or deforming during the extrusion process, but also ensure the uniformity of the pressure during the extrusion process, thereby improving the uniformity of the extrusion during lithium battery testing and further improving the accuracy and reliability of the test.

[0020] 3. Compared with the detection of the prior art, the present invention can effectively prevent the lithium battery from being directly squeezed against the surface of the lithium battery during the extrusion process, resulting in uneven extrusion force on the lithium battery due to surface dents, and may also cause the lithium battery to fall off or the lithium battery to have an internal short circuit during detection. The design of this scheme enables the stretching spring to contact the surface of the lithium battery over a larger area, which can reduce the detachment of the lithium battery during extrusion, and can also reduce the impact and damage to the extrusion equipment caused by the movement of the battery, thereby extending the service life of the equipment and reducing the safety risks during the test.

[0021] 4. By detecting the setting of the clamping and feeding mechanism, it can be achieved that before the battery extrusion test, the operator can not only quickly push the lithium battery to the optimal extrusion area at the bottom of the tension spring with the assistance of the L-shaped push plate, but also manually place the lithium battery on the die-casting table by the operator before the lithium battery is clamped in the prior art. Due to human factors, the extrusion position of the lithium battery may deviate from the extruder and affect the accuracy of the test results. The design of the L-shaped push plate in this scheme enables the operator to quickly and accurately push the lithium battery to the optimal extrusion area at the bottom of the tension spring. This process not only reduces the tediousness of manual operation, but also ensures that the lithium battery is in the best position during the test, thereby improving the accuracy and efficiency of the operation.

[0022] 5. After the lithium battery extrusion test, the design of the second push handle enables the operator to quickly push the lithium battery after the extrusion test into the extrusion area. The second push handle can quickly move the lithium battery out of the extrusion area. The second push handle can prevent potential harm to the operator caused by safety hazards such as short circuit and heat generation that may occur during the lithium battery extrusion process. This immediate and safe handling method not only protects the safety of the operator, but also ensures the overall safety of the test environment.

[0023] 6. Moreover, when the second push handle is pushed on the test bench, because when the second push handle pushes the lithium battery out of the detection area on the test bench, the cleaning block carefully arranged at the bottom can simultaneously clean the surface of the test bench. Compared with the traditional impurity cleaning, this design not only effectively avoids the problem of test area contamination caused by untimely or incomplete manual cleaning in the traditional method, but also can reduce the influence of impurities and residues on the test results, further improving the accuracy and reliability of the test.

[0024] 7. Through the arrangement of the azimuth adjustment mechanism and the combination of the arc groove and the test bench, this innovation enables the test bench to slide freely along the arc groove in the arc plate, thereby realizing flexible adjustment of the extrusion direction. This adjustment is not only rapid but also extremely precise, because it follows the preset sliding path, ensuring that each adjustment can accurately reach the target position, and the firm clamping of the lithium battery by the tension spring provides a solid safety guarantee for the entire test process. No matter how the test bench adjusts the direction, the lithium battery can be firmly fixed, effectively preventing the possible drop or detachment in the extrusion test in different directions. Compared with the prior art in which the lithium battery is extruded in a single direction, the multi-directional extrusion test method in this scheme can not only more comprehensively simulate the various extrusion conditions that the lithium battery may suffer in the actual use environment, but also covers multiple dimensions and multiple angles of extrusion tests, thereby more truly reflecting the performance of the lithium battery under different working conditions, especially for the evaluation of key safety risks such as battery deformation resistance, leakage, fire, and explosion. This multi-directional test method undoubtedly provides more comprehensive and in-depth data support. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is an auxiliary schematic diagram of the three-dimensional structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the half-cut connection relationship of the three-dimensional structure of the present invention.

[0028] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0029] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle.

[0030] Figure 6 It is an auxiliary schematic diagram of the structural connection relationship of the azimuth adjustment mechanism of the present invention.

[0031] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle.

[0032] Figure 8 It is a schematic diagram of the structural connection relationship state of the azimuth adjustment mechanism of the present invention.

[0033] Fig. 9 It is a schematic diagram of the exploded state of the structural connection relationship of the detection clamping and feeding mechanism of the present invention.

[0034] In the figure: 1, test table; 11, die-casting placement table; 12, first cylinder; 13, second cylinder; 14, small drive cylinder.

[0035] 2. Detection clamping feeding mechanism; 21. First push handle; 22. Sliding tooth plate; 23. L-shaped push plate; 24. Arc sliding tooth extrusion column; 25. Clamp; 26. Tension spring; 27. Second push handle; 28. Reset spring; 29. ​​Push rod.

[0036] 3. Azimuth adjustment mechanism; 31. Push-pull plate; 32. Square slider; 33. Auxiliary plate; 34. Arc plate; 35. Arc groove; 36. Sliding column; 37. Crank. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0039] Example: Please refer to Figures 1 to 9As shown: In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a battery extrusion tester for lithium battery safety testing, including a test table 1, a die-casting placement table 11 is slidably connected in the middle of the test table 1, a first cylinder 12 is installed in the middle of the upper surface of the test table 1, a small driving cylinder 14 is installed on the upper surface of the test table 1 close to the first cylinder 12, and a second cylinder 13 is installed on the outer surface of the test table 1. It also includes a detection clamping and feeding mechanism 2 and an azimuth adjustment mechanism 3. The detection clamping and feeding mechanism 2 is arranged on the die-casting placement table 11, and the azimuth adjustment mechanism 3 is arranged on the inner wall of the test table 1; the detection clamping and feeding mechanism 2 is used for clamping and preventing the lithium battery from collapsing during extrusion; the azimuth adjustment mechanism 3 is used for adjusting the angular position of the die-casting placement table 11; the detection clamping and feeding mechanism 2 includes a first push handle 21, an L-shaped push plate 23 is fixedly connected to the first push handle 21, and sliding tooth plates 22 are fixedly connected at both ends of the bottom of the L-shaped push plate 23 away from the first push handle 21, and the L-shaped push plate 23 has a pair of A sliding hole is provided, and a push rod 29 is slidably connected in the sliding hole of the L-shaped push plate 23; a reset spring 28 is sleeved on the outer surface of the push rod 29, one end of the reset spring 28 is fixedly connected to the L-shaped push plate 23, and the other end of the reset spring 28 is fixedly connected to a second push handle 27, and the second push handle 27 is fixedly connected to the push rod 29; sliding teeth are evenly arranged on the upper surface of the sliding tooth plate 22, and the bottom of the sliding tooth plate 22 is slidably connected to the die-casting placement table 11, and the tooth surface of the sliding tooth plate 22 is meshed with an arc sliding tooth extrusion column 24; the arc Both ends of the surface sliding tooth extrusion column 24 are rotatably connected to the die-casting placement table 11, and a clamping plate 25 is arranged above the arc surface sliding tooth extrusion column 24. A tension spring 26 is evenly fixedly connected to the bottom of the clamping plate 25, and the end of the tension spring 26 away from the clamping plate 25 is fixedly connected to the upper surface of the die-casting placement table 11; wherein: the push rod 29 is fixedly connected to a push material cleaning plate at one end away from the second push handle 27, and the bottom of the push material cleaning plate slides on the upper surface of the die-casting placement table 11, wherein a cleaning block is fixedly arranged at the bottom of the push material cleaning plate.

[0040] In the prior art, when a lithium battery is subjected to an extrusion test, the lithium battery is usually placed directly under an extrusion plate for direct extrusion testing. However, since the battery cannot be effectively fixed under the extrusion plate during extrusion, the lithium battery may move or tilt during the extrusion process, resulting in uneven extrusion force distribution. Such uneven extrusion force distribution cannot truly reflect the stress conditions of the battery in actual use, thereby reducing the accuracy of the measurement results. Compared with the prior art, through the implementation of this embodiment, the surface of the clamping plate 25 is directly pressurized by a pressurizing device, so that the size and direction of the extrusion force can be more accurately controlled, which is conducive to ensuring that the extrusion force is evenly distributed on the battery. Compared with the prior art in which the lithium battery is directly pressurized, the clamping setting of the clamping plate 25 can effectively prevent the lithium battery from falling off or short-circuiting during the extrusion process, and can also reduce the impact and damage to the extrusion equipment caused by the movement of the battery, thereby extending the service life of the equipment and reducing the safety risks during the test.

[0041] For further examples, please refer to Figures 1 to 9 As shown: the azimuth adjustment mechanism 3 includes a push-pull plate 31, one end of the push-pull plate 31 is fixedly connected to the driving shaft of the small driving cylinder 14, and the other end of the push-pull plate 31 is symmetrically fixedly connected with square sliders 32 on both sides, and the bottom of the push-pull plate 31 is slidably connected to the inner wall of the test table 1; the square sliders 32 are symmetrically slidably connected to the inner wall of the test table 1, and the end of the square slider 32 away from the push-pull plate 31 is rotatably connected to an auxiliary plate 33, and the end of the auxiliary plate 33 away from the square slider 32 is rotatably connected to the die-casting placement table 11; the test table 1 is fixedly connected with arc sliders on both sides close to the die-casting placement table 11 An arc plate 34 is provided with an arc groove 35 in the middle of the arc plate 34, and a slide post 36 is slidably connected in the arc groove 35; a crank 37 is rotatably connected to the end of the slide post 36 away from the arc groove 35, and the crank 37 is rotatably connected to the two sides of the die-casting placement table 11 away from the end of the auxiliary plate 33 away from the end of the slide post 36; wherein: a push switch is provided on the rightmost side of the arc groove 35, and when the slide post 36 slides to the rightmost side of the arc groove 35, the push switch is activated, because the push switch is electrically connected to the small driving cylinder 14, the small driving cylinder 14 will stop running by pressing the switch.

[0042] In the prior art, the existing test equipment can only realize the extrusion test in a single direction, but cannot perform multi-directional tests simultaneously or continuously. If the extrusion test can only be performed from one direction, it is impossible to fully evaluate the anti-extrusion ability of the battery in different directions. At the same time, because the battery may be squeezed from multiple directions in actual use, the test results in a single direction may not accurately reflect the overall safety performance of the battery. Compared with the prior art, through the implementation of this embodiment, by opening the arc groove 35, the die-casting placement table 11 can always slide along the limit of the arc groove 35 in the arc plate 34, so that the die-casting placement table 11 can quickly adjust the extrusion direction. The design of the arc groove 35 enables the die-casting placement table 11 to slide along a predetermined path. At the same time, because the clamping plate 25 clamps the lithium battery, it can prevent the lithium battery from falling off when adjusting the extrusion in different directions, thereby realizing precise control of the extrusion direction adjustment. Compared with the manual adjustment or simple mechanical structure that may exist in the prior art, the design of the arc groove 35 makes the adjustment of the extrusion direction more precise and controllable, thereby improving the measurement precision and accuracy.

[0043] The working principles of all contents in the above embodiments are as follows: in the initial state: the tension spring 26 is not stretched, and the non-tooth surface of the arc-surface sliding gear extrusion column 24 is in contact with the upper surface of the sliding gear plate 22.

[0044] The following is a working process of testing the clamping and feeding mechanism 2 for clamping and preventing the lithium battery from collapsing during extrusion: When in use, the operator first places the lithium battery to be extruded on the die-casting placement table 11 between the L-shaped push plate 23 and the clamping plate 25. At this time, the operator only needs to manually push the first push handle 21, such as Figure 5 As shown, when the operator manually pushes the first push handle 21 to slide to the left, because the first push handle 21 is fixed on the L-shaped push plate 23, when the first push handle 21 is pushed to the left, the L-shaped push plate 23 will start to slide to the left on the die-casting placement table 11. At the same time, because the bottom of the L-shaped push plate 23 is away from the first push handle 21 and both sides are fixedly connected with the sliding tooth plate 22, and the bottom of the sliding tooth plate 22 slides in the die-casting placement table 11, when the L-shaped push plate 23 slides to the left, the sliding tooth plate 22 will also start to slide to the left.

[0045] Because the sliding teeth evenly arranged on the upper surface of the sliding tooth plate 22 are meshed with the tooth surface of the arc sliding tooth extrusion column 24, when the sliding tooth plate 22 slides to the left on the die-casting placement table 11, the tooth surface meshing will cause the arc sliding tooth extrusion column 24 to rotate clockwise on the die-casting placement table 11. When the arc sliding tooth extrusion column 24 starts to rotate clockwise, since the bottom of the clamping plate 25 arranged above the arc sliding tooth extrusion column 24 is evenly fixed with a tension spring 26, when the arc sliding tooth extrusion column 24 rotates clockwise, the non-tooth surface of the end of the arc sliding tooth extrusion column 24 away from the sliding tooth plate 22 will gradually squeeze the bottom of the clamping plate 25. Because the sliding tooth plate 22 to the arc sliding tooth extrusion column 24 are symmetrically arranged on both sides of the die-casting placement table 11 and have the same working principle, only one group marked in the figure is described.

[0046] like Figure 4 As shown, when the arc-surface sliding gear extrusion column 24 rotates clockwise, the upper surface of the arc-surface sliding gear extrusion column 24 at the non-tooth surface begins to squeeze the lower surface of the clamp 25, and at this time the clamp 25 begins to gradually move upward under the extrusion of the arc-surface sliding gear extrusion column 24. At this time, because the arc-surface sliding gear extrusion column 24 is symmetrically arranged at the bottom of both sides of the clamp 25, the clamp 25 begins to slowly move upward, and the tension spring 26 fixed at the bottom of the clamp 25 begins to be gradually stretched.

[0047] At the same time, when the operator places the lithium battery to be squeezed on the die-casting placement table 11 between the L-shaped push plate 23 and the clamping plate 25, the first push handle 21 drives the L-shaped push plate 23 to slide to the left. At this time, the lithium battery to be tested is slowly pushed to the bottom of the clamping plate 25 under the push of the end of the L-shaped push plate 23 away from the first push handle 21. At the same time, in order to prevent the lithium battery from failing to move evenly to the bottom of the clamping plate 25, the operator manually pushes the second push handle 27 to the left again. Figure 5As shown, at this time, because the second push handle 27 and the push rod 29 are fixed to each other, and because a sliding hole is opened in the middle of the L-shaped push plate 23, and the push rod 29 is slidably connected in the sliding hole of the L-shaped push plate 23, the second push handle 27 slides to the left, which drives the push rod 29 to slide to the left. Because the inner return spring 28 is sleeved on the outer surface of the push rod 29, under the pressure of the L-shaped push plate 23 and the second push handle 27, the return spring 28 begins to be compressed. Because the end of the inner push rod 29 away from the second push handle 27 is fixed to the push cleaning plate, at this time, Pushing the push rod 29 to the left will drive the push cleaning plate to slide to the left on the upper surface of the die-casting placement table 11. At this time, the operator pushes the first push handle 21 to control the push cleaning plate to push the lithium battery down and push the lithium battery to just below the clamp 25. At this time, the operator can release the second push handle 27, because the elastic action of the return spring 28 will cause the second push handle 27 to start driving the push rod 29 to slide to the right. At this time, the push rod 29 will drive the push cleaning plate to slide again until it is in contact with the end of the L-shaped push plate 23 away from the second push handle 27.

[0048] When the operator places the lithium battery just below the clamping plate 25, the operator pulls the first push handle 21 to the right again. As mentioned above, when the operator pulls the first push handle 21 to the right, the sliding tooth plate 22 drives the arc sliding tooth extrusion column 24 to start rotating counterclockwise in the die-casting placement table 11. At this time, the arc sliding tooth extrusion column 24 rotates counterclockwise, causing the non-tooth surface of the arc sliding tooth extrusion column 24 to gradually separate from the clamping plate 25. At this time, the clamping plate 25 moves downward under the elastic pull of the tension spring 26, and the lithium battery to be extruded below the clamping plate 25 begins to be clamped by the clamping plate 25. At this time, the operator closes the protective door of the test table 1 after the operation is completed and starts to start the first cylinder 12 to drive the fixed The extrusion block starts to perform an extrusion test on the lithium battery. By detecting the setting of the clamping and feeding mechanism 2, it can be achieved that before the battery extrusion test, the operator can not only quickly push the lithium battery to the optimal extrusion area at the bottom of the tension spring 26 with the assistance of the L-shaped push plate 23, but also manually place the lithium battery on the die-casting table by the operator before the lithium battery is clamped in the prior art. Due to human factors, the extrusion position of the lithium battery may deviate from the extruder and affect the accuracy of the test result. The design of the L-shaped push plate 23 in this scheme enables the operator to quickly and accurately push the lithium battery to the optimal extrusion area at the bottom of the tension spring 26. This process not only reduces the tediousness of manual operation, but also ensures that the lithium battery is in the best position during the test, thereby improving the accuracy and efficiency of the operation.

[0049] Please refer to the above working process Figures 1 to 9 .

[0050] The following is the working process of the azimuth adjustment mechanism 3 for adjusting the angular position of the die-casting placement table 11: When in use, as described above, after the lithium battery is squeezed by the squeezing block driven by the first cylinder 12, in order to prevent the singleness of the test, the battery may be subjected to forces from different directions due to vehicle collision, falling or vibration in actual use. In order to prevent the single squeezing in the vertical direction from actually affecting the singleness of the actual detection data, the azimuth adjustment mechanism 3 is set as described below.

[0051] At this time, after the operator starts the control button of the small drive cylinder 14, the start of the small drive cylinder 14 will drive the drive shaft of the small drive cylinder 14 to start pulling upward. Figure 1 As shown, when the driving shaft of the small driving cylinder 14 moves upward, because the driving shaft of the small driving cylinder 14 is fixedly connected to the push-pull plate 31, because the push-pull plate 31 slides on the inner wall of the test table 1, and at the same time, the push-pull plate 31 is symmetrically fixed with a square slider 32 at one end away from the driving shaft of the small driving cylinder 14, and the square slider 32 is also slidably connected to the inner wall of the test table 1, so when the driving shaft of the small driving cylinder 14 slides upward, the push-pull plate 31 will drive the square slider 32 to slide upward synchronously, and because the square slider 32 to the crank 37 are symmetrically arranged on both sides of the die-casting placement table 11, and because the working principles are the same, only the following example is required. Figure 8The group of marks shown is described. At this time, the square slider 32 slides upward along the inner wall of the test table 1, which will drive the auxiliary plate 33 to start moving upward. Because one end of the auxiliary plate 33 is rotatably connected to the end of the square slider 32 away from the push-pull plate 31, and the other end is rotatably connected to the die-casting placement table 11. At the same time, because the bottom of the die-casting placement table 11 slides between the test table 1 and the inner wall of the test table 1, when the auxiliary plate 33 is pulled upward along the inner wall of the test table 1 by the square slider 32, the auxiliary plate 33 pulls the die-casting placement table 11 to start sliding gradually along the bottom of the test table 1 to the inner wall of the test table 1. Since the die-casting placement table 11 is rotatably connected to the end of the auxiliary plate 33 away from the auxiliary plate 33, and the end of the crank 37 away from the die-casting placement table 11 is fixed to the sliding column 36, and because the arc groove 35 is opened in the middle of the arc plate 34 fixedly connected to both sides of the die-casting placement table 11 of the test table 1, and the outer surface of the sliding column 36 is slidably connected in the arc groove 35, Pulling the auxiliary plate 33 upward will cause the slide post 36 to slide to the right along the arc groove 35. When the auxiliary plate 33 pulls the die-casting placement table 11 to slide to the middle of the inner wall of the test table 1, because the slide post 36 slides to the rightmost side of the arc groove 35, the arc groove 35 will block the die-casting placement table 11 and cause it to start sliding to the same horizontal motion trajectory as the second cylinder 13. At this time, because a push switch is provided on the rightmost side of the arc groove 35, when the slide post 36 slides to the rightmost side of the arc groove 35, the push switch is activated. Because the push switch is electrically connected to the small driving cylinder 14, the small driving cylinder 14 will stop running by pressing the switch. At this time, because the middle part of the die-casting placement table 11 is located on the same motion trajectory as the second cylinder 13, when the operator starts to start the second cylinder 13 for the extrusion test experiment, the extension of the drive shaft of the second cylinder 13 will drive the extrusion shaft on the left inner wall of the test table 1 to start the extrusion test on the splint 25.

[0052] When the test is completed, the operator opens the protective door again as described above, manually pushes the first push handle 21 to the left to raise the clamp 25, and at the same time, the operator manually pushes the second push handle 27 to the left again, and the second push handle 27 drives the push rod 29, so that the push cleaning plate pushes the extruded lithium battery to the left. At the same time, because a cleaning block is provided at the bottom of the push cleaning plate, when the push cleaning plate is pushed, the impurities generated by the extrusion on the surface of the die-casting placement table 11 can be pushed out together, thereby avoiding these impurities from affecting the next measurement experiment. After the lithium battery extrusion test, the design of the second push handle 27 enables the operator to quickly push the extrusion-tested lithium battery into the extrusion area quickly, and the second push handle 27 can be used to quickly move the lithium battery out of the extrusion area. The second push handle 27 can prevent potential harm to the operator caused by safety hazards such as short circuit and heat generation during the extrusion of the lithium battery. This immediate and safe handling method not only protects the safety of the operator, but also ensures the overall safety of the test environment.

[0053] Through the setting of the azimuth adjustment mechanism 3, the arc groove 35 is combined with the test table 11. This innovation enables the test table 11 to slide freely along the arc groove 35 in the arc plate 34, thereby realizing flexible adjustment of the extrusion direction. This adjustment is not only rapid but also extremely precise, because it follows the preset sliding path, ensuring that each adjustment can accurately reach the target position. In addition, the firm clamping of the lithium battery by the tension spring 26 provides a solid safety guarantee for the entire test process. No matter how the test table 11 is adjusted in direction, the lithium battery can be firmly fixed, effectively preventing the possibility of falling or detaching during extrusion tests in different directions.

[0054] Please refer to the above working process Figures 1 to 9 .

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery extrusion tester for lithium battery safety testing, used for lithium battery extrusion testing, comprising a test table (1), wherein a die-casting placement table (11) is slidably connected in the middle of the test table (1), a first cylinder (12) is installed in the middle of the upper surface of the test table (1), a small driving cylinder (14) is installed on the side of the upper surface of the test table (1) close to the first cylinder (12), and a second cylinder (13) is installed on the outer surface of the test table (1), characterized in that: It also includes a detection clamping and feeding mechanism (2) and an orientation adjustment mechanism (3), wherein the detection clamping and feeding mechanism (2) is arranged on the die-casting placement table (11), and the orientation adjustment mechanism (3) is arranged on the inner wall of the test table (1); the detection clamping and feeding mechanism (2) is used for clamping and fixing the lithium battery to prevent collapse during extrusion; and the orientation adjustment mechanism (3) is used for adjusting the angle position of the die-casting placement table (11); The detection clamping feeding mechanism (2) comprises a first push handle (21), an L-shaped push plate (23) is fixedly connected to the first push handle (21), two ends of the bottom of the L-shaped push plate (23) away from the first push handle (21) are fixedly connected to sliding tooth plates (22), sliding holes are symmetrically opened in the L-shaped push plate (23), and a push rod (29) is slidably connected to the sliding hole of the L-shaped push plate (23); A return spring (28) is sleeved on the outer surface of the push rod (29), one end of the return spring (28) is fixedly connected to the L-shaped push plate (23), and the other end of the return spring (28) is fixedly connected to a second push handle (27), and the second push handle (27) is fixedly connected to the push rod (29); The push rod (29) is fixedly connected to an end thereof away from the second push handle (27) with a push cleaning plate, and the bottom of the push cleaning plate slides on the upper surface of the die-casting placement table (11), wherein a cleaning block is fixedly arranged at the bottom of the push cleaning plate; The upper surface of the sliding tooth plate (22) is evenly provided with sliding teeth, the bottom of the sliding tooth plate (22) is slidably connected to the die-casting placement table (11), and the tooth surface of the sliding tooth plate (22) is meshed with an arc-surface sliding tooth extrusion column (24); Both ends of the arc-surface sliding tooth extrusion column (24) are rotatably connected to the die-casting placement table (11); a clamping plate (25) is arranged above the arc-surface sliding tooth extrusion column (24); a tension spring (26) is evenly fixedly connected to the bottom of the clamping plate (25); and one end of the tension spring (26) away from the clamping plate (25) is fixedly connected to the upper surface of the die-casting placement table (11).

2. A battery extrusion testing machine for lithium battery safety testing according to claim 1, characterized in that: The orientation adjustment mechanism (3) comprises a push-pull plate (31), one end of the push-pull plate (31) is fixedly connected to the drive shaft of the small drive cylinder (14), and the other end of the push-pull plate (31) is symmetrically fixedly connected to square sliders (32) on both sides, and the bottom of the push-pull plate (31) is slidably connected to the inner wall of the test table (1).

3. A battery extrusion testing machine for lithium battery safety testing according to claim 2, characterized in that: The square slider (32) is symmetrically slidably connected to the inner wall of the test table (1); one end of the square slider (32) away from the push-pull plate (31) is rotatably connected to an auxiliary plate (33); and one end of the auxiliary plate (33) away from the square slider (32) is rotatably connected to the die-casting placement table (11).

4. A battery extrusion testing machine for lithium battery safety testing according to claim 3, characterized in that: The test table (1) is fixedly connected with arc plates (34) on both sides close to the die-casting placement table (11), an arc groove (35) is opened in the middle of the arc plate (34), and a sliding column (36) is slidably connected in the arc groove (35).

5. A battery extrusion testing machine for lithium battery safety testing according to claim 4, characterized in that: The end of the slide post (36) away from the arc groove (35) is rotatably connected to a crank (37), and the end of the crank (37) away from the slide post (36) is rotatably connected to both sides of the end of the die-casting placement table (11) away from the auxiliary plate (33).

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