A diaphragm rupture temperature testing apparatus

Abstract

The utility model discloses a diaphragm rupture temperature test equipment, including support, upper clamp, lower clamp and detachable setting on the weight of lower clamp. Upper clamp installs in The support top, the support side is provided with the guide slot, the lower clamp side is provided with the guide rod correspondingly, the guide rod with The guide slot sliding connection, still be provided with for lifting and clamping assembly on the support. The equipment is through upper clamp and lower clamp steady clamping diaphragm both ends, and the guide slot is cooperated with the guide rod and is restricted lower clamp vertical movement, avoids lateral force interference, and lifting and clamping assembly is convenient to assemble and disassemble and guarantees the tension stability when testing, and the weight is combined flexibly through the plug -in block, and the tension is controlled accurately. Overall solved the traditional equipment clamping not steady, tension difficult control, the problem of poor universality, improved the test accuracy, stability and efficiency, is applicable to a variety of diaphragm test scene.

Description

Technical Field

[0001] This utility model relates to the field of battery separator testing, and more specifically, to a separator rupture temperature testing device. Background Technology

[0002] In the production and research and development of batteries, the separator is a key component, and its performance directly affects the safety and reliability of the battery. Among the key indicators, the separator's temperature resistance is crucial. When the battery is exposed to high temperatures, if the separator ruptures due to excessive heat, it may cause direct contact between the positive and negative electrodes inside the battery, leading to serious safety hazards such as short circuits and thermal runaway. Therefore, accurate testing of the separator's rupture temperature is a critical step in evaluating the quality of the battery separator and ensuring battery safety performance.

[0003] Currently, there are many shortcomings in the industry's testing methods for diaphragm rupture temperature. Traditional testing methods often struggle to achieve stable clamping of the diaphragm, and uneven clamping force or loosening during testing can easily lead to sample displacement, affecting the accuracy of the test results. Furthermore, most existing equipment cannot precisely control the tension exerted on the diaphragm, and the magnitude of this tension directly affects the critical rupture temperature of the diaphragm under high-temperature environments, resulting in a lack of comparability of data under different testing conditions. In addition, some testing devices have complex structures, making them difficult to meet the testing needs of different products, resulting in low versatility. Utility Model Content

[0004] The purpose of this invention is to provide a diaphragm rupture temperature testing device to solve the technical problems existing in the background art.

[0005] This utility model provides a diaphragm rupture temperature testing device, including a support, an upper clamp, a lower clamp, and a weight detachably mounted on the lower clamp;

[0006] The upper clamp is installed on the top of the bracket, the side of the bracket is provided with a guide groove, and the side of the lower clamp is provided with a guide rod. The guide rod is slidably connected to the guide groove. The bracket is also provided with a lifting clamping assembly. When the lower clamp fixes the diaphragm, the lifting clamping assembly clamps the guide rod. When the diaphragm is tested, the lifting clamping assembly releases the guide rod, and the lower clamp is suspended in the air.

[0007] In a preferred embodiment, the upper clamp includes an upper clamping plate one mounted on the top of the bracket and an upper clamping plate two disposed opposite to the upper clamping plate one, and an upper clamping cylinder connected to the upper clamping plate two for driving it to move closer to or away from the upper clamping plate one.

[0008] In a preferred embodiment, an alignment groove is provided at the top of the upper clamping plate, and the upper end of the diaphragm is limited by the alignment groove.

[0009] In a preferred embodiment, the lower clamp includes a lower clamping plate one, a lower clamping plate two disposed opposite to the lower clamping plate one, and a mounting seat for mounting the lower clamping plate two. A hand-tightening bolt is threaded onto the mounting seat, and the hand-tightening bolt passes through the mounting seat and is rotatably connected to the back of the lower clamping plate two. A limit rail is also provided on the mounting seat, and the lower clamping plate two is slidably connected to the limit rail.

[0010] In a preferred embodiment, the guide rod is fixedly connected to the lower clamping plate.

[0011] In a preferred embodiment, the lifting and clamping assembly includes a lifting cylinder, a clamping cylinder connected to the output end of the lifting cylinder, and a gripper connected to the output end of the clamping cylinder.

[0012] In a preferred embodiment, the weight is provided with a perforated insert block, and the lower clamp is provided with an insert rod corresponding to the insert block, and at least two insert holes are provided.

[0013] The beneficial effects of this utility model's technical solution are:

[0014] This equipment uses upper and lower clamps to stably hold both ends of the diaphragm. Guide grooves and guide rods work together to restrict the vertical movement of the lower clamp, avoiding lateral force interference. The lifting clamping assembly facilitates loading and unloading and ensures stable tension during testing. Weights are flexibly combined via insert blocks and rods for precise tension control. Overall, it solves the problems of unstable clamping, difficult tension control, and poor versatility of traditional equipment, improving testing accuracy, stability, and efficiency, and is suitable for various diaphragm testing scenarios. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0017] Figure 3 This is a schematic diagram of the upper clamp of this utility model.

[0018] Figure 4 This is a schematic diagram of the lower clamp and weights of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1 bracket, 2 upper clamp, 21 upper clamping plate one, 22 upper clamping plate two, 23 upper clamping cylinder, 24 alignment groove, 3 lower clamp, 31 lower clamping plate one, 32 lower clamping plate two, 33 mounting base, 34 hand-tightening bolt, 35 limit rail, 4 weight, 5 guide rod, 6 guide groove, 7 lifting clamping assembly, 71 lifting cylinder, 72 clamping cylinder, 73 gripper, 8 insert block, 9 insert rod. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0021] like Figures 1-4 As shown, this utility model provides a diaphragm rupture temperature testing device. The testing device is located inside an oven and includes a support 1, an upper clamp 2, a lower clamp 3, and a weight 4 detachably mounted on the lower clamp 3. The upper clamp 2 is mounted on the top of the support 1. A guide groove 6 is provided on the side of the support 1, and a guide rod 5 is correspondingly provided on the side of the lower clamp 3. The guide rod 5 is slidably connected to the guide groove 6. The support 1 also includes a lifting clamping assembly 7. When the lower clamp 3 fixes the diaphragm, the lifting clamping assembly 7 clamps the guide rod 5. During diaphragm testing, the lifting clamping assembly 7 releases the guide rod 5, and the lower clamp 3 is suspended in the air.

[0022] The upper clamp 2 and the lower clamp 3 respectively hold the two ends of the battery separator. Then, the weight 4 is suspended on the lower clamp 3. After fixing, the oven heats up at a certain rate and the temperature of the temperature sensor is recorded when the separator breaks. This temperature is the rupture temperature of the separator sample.

[0023] During the battery separator fixing stage, the lifting clamping assembly 7 clamps the guide rod 5, providing stable support for the lower clamp 3, making it easy for the operator to fix both ends of the separator to the upper clamp 2 and the lower clamp 3 respectively; during the testing stage, the lifting clamping assembly 7 releases the guide rod 5, and the lower clamp 3 is suspended in the air under the gravity of the weight 4. At this time, the separator is subjected to a constant tension generated by the gravity of the weight 4, while the guide rod 5 slides vertically along the guide groove 6, ensuring that the lower clamp 3 only moves in the vertical direction and avoiding the separator being subjected to additional lateral forces.

[0024] In the above scheme, the sliding cooperation between the guide groove 6 and the guide rod 5 restricts the movement trajectory of the lower clamp 3, ensuring its stable vertical movement and avoiding uneven force on the diaphragm due to the offset of the lower clamp 3; the "clamping-releasing" switching of the lifting clamping assembly 7 not only facilitates the installation and fixing of the diaphragm, but also allows the diaphragm tension to be controlled only by the weight 4 when the lower clamp 3 is suspended during testing, thus improving the stability and accuracy of the test.

[0025] like Figure 3As shown, the upper clamp 2 includes an upper clamping plate 21 mounted on the top of the bracket 1 and an upper clamping plate 22 opposite to the upper clamping plate 21. An upper clamping cylinder 23 is connected to the upper clamping plate 22 for driving it to move closer to or away from the upper clamping plate 21. An alignment groove 24 is provided on the top of the upper clamping plate 21, and the upper end of the diaphragm is limited by the alignment groove 24.

[0026] When fixing the upper end of the diaphragm, place the upper end of the diaphragm into the alignment groove 24. The upper clamping cylinder 23 drives the upper clamping plate 22 to move closer to the upper clamping plate 21 until the two clamping plates clamp the upper end of the diaphragm. The alignment groove 24 ensures that the upper edge of the diaphragm is neatly aligned through physical limiting, avoiding skewing. The upper clamping cylinder 23 provides a stable and adjustable clamping force, avoiding diaphragm loosening or excessive compression damage caused by uneven force during manual clamping, and ensuring consistent clamping.

[0027] like Figure 4 As shown, the lower clamp 3 includes a lower clamping plate 31, a lower clamping plate 32 opposite to the lower clamping plate 31, and a mounting base 33 for mounting the lower clamping plate 32. A hand-tightening bolt 34 is threaded onto the mounting base 33. The hand-tightening bolt 34 passes through the mounting base 33 and is rotatably connected to the back of the lower clamping plate 32. A limiting rail 35 is also provided on the mounting base 33, and the lower clamping plate 32 is slidably connected to the limiting rail 35.

[0028] When fixing the lower end of the diaphragm, turn the hand-tightening bolt 34. Under the action of the thread, push the second lower clamping plate 32 to slide along the limiting track 35 towards the lower clamping plate 31 until the two clamping plates clamp the lower end of the diaphragm. The limiting track 35 restricts the movement direction of the second lower clamping plate 32 to ensure that it always remains parallel to the lower clamping plate 31.

[0029] The guide rod 5 is fixedly connected to the lower clamping plate 31. The guide rod 5 and the lower clamping plate 31 are rigidly connected, so that the lower clamping fixture 3 as a whole forms a linkage structure with the guide groove 6 of the bracket 1 through the guide rod 5. When the lower clamping fixture 3 is subjected to force and moves, the guide rod 5 slides synchronously along the guide groove 6 with the lower clamping plate 31, ensuring that the movement trajectory of the lower clamping fixture 3 is completely consistent with the guide groove 6.

[0030] The lifting and clamping assembly 7 includes a lifting cylinder 71, a clamping cylinder 72 connected to the output end of the lifting cylinder 71, and a clamping jaw 73 connected to the output end of the clamping cylinder 72. When fixing the diaphragm, the lifting cylinder 71 drives the clamping cylinder 72 and the clamping jaw 73 to rise and fall to a suitable height, and the clamping cylinder 72 drives the clamping jaw 73 to close to clamp the guide rod 5, providing support for the lower clamp 3; during testing, the clamping cylinder 72 drives the clamping jaw 73 to open and release the guide rod 5, and the lifting cylinder 71 can drive the clamping jaw 73 to return to a position that does not interfere with the movement of the lower clamp 3.

[0031] The weight 4 is provided with a perforated insert 8, and the lower clamping plate 31 is provided with a corresponding insert rod 9. At least two insert holes are provided. Weights 4 of different weights can be selected according to testing requirements. The weights 4 are detachably installed on the lower clamping plate 31 by engaging the insert rod 9 with the holes in the insert 8. The multiple insert holes prevent the weights 4 from shaking after installation. Furthermore, the lower clamping plate 31 can provide multiple installation positions to achieve combined installation of weights 4 of different masses, improving testing accuracy.

[0032] This equipment uses upper and lower clamps to stably hold both ends of the diaphragm. Guide grooves and guide rods work together to restrict the vertical movement of the lower clamp, avoiding lateral force interference. The lifting clamping assembly facilitates loading and unloading and ensures stable tension during testing. Weights are flexibly combined via insert blocks and rods for precise tension control. Overall, it solves the problems of unstable clamping, difficult tension control, and poor versatility of traditional equipment, improving testing accuracy, stability, and efficiency, and is suitable for various diaphragm testing scenarios.

[0033] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A diaphragm rupture temperature testing device, characterized in that: Includes a support, an upper clamp, a lower clamp, and weights that can be detachably mounted on the lower clamp; The upper clamp is installed on the top of the bracket, the side of the bracket is provided with a guide groove, and the side of the lower clamp is provided with a guide rod. The guide rod is slidably connected to the guide groove. The bracket is also provided with a lifting clamping assembly. When the lower clamp fixes the diaphragm, the lifting clamping assembly clamps the guide rod. When the diaphragm is tested, the lifting clamping assembly releases the guide rod, and the lower clamp is suspended in the air.

2. The diaphragm rupture temperature testing device according to claim 1, characterized in that: The upper clamp includes an upper clamping plate one mounted on the top of the bracket and an upper clamping plate two disposed opposite to the upper clamping plate one. An upper clamping cylinder for driving the upper clamping plate two to move closer to or away from the upper clamping plate one is connected to the upper clamping plate two.

3. The diaphragm rupture temperature testing device according to claim 2, characterized in that: An alignment groove is provided at the top of the upper clamping plate, and the upper end of the diaphragm is limited by the alignment groove.

4. The diaphragm rupture temperature testing device according to claim 1, characterized in that: The lower clamp includes a lower clamping plate one, a lower clamping plate two disposed opposite to the lower clamping plate one, and a mounting base for mounting the lower clamping plate two. A hand-tightening bolt is threaded onto the mounting base, and the hand-tightening bolt passes through the mounting base and is rotatably connected to the back of the lower clamping plate two. A limit rail is also provided on the mounting base, and the lower clamping plate two is slidably connected to the limit rail.

5. The diaphragm rupture temperature testing device according to claim 4, characterized in that: The guide rod is fixedly connected to the lower clamping plate.

6. The diaphragm rupture temperature testing device according to claim 5, characterized in that: The lifting and clamping assembly includes a lifting cylinder, a clamping cylinder connected to the output end of the lifting cylinder, and a gripper connected to the output end of the clamping cylinder.

7. The diaphragm rupture temperature testing device according to claim 4, characterized in that: The weight is provided with a perforated insert block, and the lower clamp is provided with an insert rod corresponding to the insert block, and at least two insert holes are provided.

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