Battery diaphragm tensile strength detection device

Abstract

The utility model discloses a battery diaphragm tensile strength detection device which comprises a fixed base, L-shaped fixed plates are welded to the outer walls of the two ends of the top of the fixed base, tensioning roll shafts which are symmetrically distributed are rotationally installed between the two L-shaped fixed plates, worm wheels are welded to the outer walls of one sides of the tensioning roll shafts, one sides of the worm wheels are meshed with worms, and the worm wheels are meshed with the worms. A servo motor is connected to the axis of the worm, guide rails are arranged on the outer wall of the top of the fixed base in parallel in the length direction, guide blocks are slidably connected to the inner walls of the guide rails in an inserted mode, and a U-shaped pull rod is welded between the guide blocks. In the process of detecting the strength of the battery diaphragm, in order to further simulate the strength conditions of the battery diaphragm in different environments, the protective cover shell is arranged at the detection position of the battery diaphragm for sealing treatment and heating treatment, so that the influence of the temperature on the strength of the battery diaphragm is continuously detected and observed; therefore, a more accurate detection result is provided, and the detection result is more reliable.

Description

Technical Field

[0001] This utility model relates to the field of battery separator production technology, and in particular to a battery separator tensile strength testing device. Background Technology

[0002] The battery separator, a layer of membrane material between the positive and negative electrodes of a battery, is a crucial component that directly impacts battery safety and cost. Its main functions are to isolate the positive and negative electrodes, preventing electrons from freely passing through while allowing ions in the electrolyte to freely pass between them. The quality of the battery separator directly determines the overall stability of the battery. Therefore, strength testing is often required during the battery separator production process. However, existing strength testing devices have some limitations:

[0003] 1. Limited testing capabilities. Existing testing devices often only test battery separators under a single environmental variable when performing tensile strength tests. This reduces the overall reliability of the battery separator under such testing conditions, resulting in inaccurate test results.

[0004] 2. Inaccurate test data. In the existing battery separator strength testing process, the methods for detecting the critical strength value of the battery separator have a certain range of ambiguity, and cannot accurately obtain specific data, resulting in inaccurate overall test data. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a battery separator tensile strength testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A battery separator tensile strength testing device includes a fixed base. L-shaped fixing plates are welded to the outer walls of both ends of the top of the fixed base. Symmetrically distributed tension rollers are rotatably mounted between the two L-shaped fixing plates. A worm gear is welded to one outer wall of each tension roller, and a worm meshes with one side of the worm gear. A servo motor is connected to the axis of the worm. A guide rail is parallel to the length of the top outer wall of the fixed base. Guide blocks are slidably inserted into the inner wall of the guide rail, and U-shaped tie rods are welded between the guide blocks. An installation groove is formed on one inner wall of the U-shaped tie rod, and a connecting rod is hinged to the other inner wall of the U-shaped tie rod. A lifting ring is welded to the middle outer wall of the connecting rod, and a spring tension scale is fastened to the lifting ring. A protective cover is snapped and fixed to the top of the fixed base.

[0008] As a further embodiment of this utility model: a slot is provided on one side of the outer wall of the tensioning roller, and a fixing plate is fixedly engaged on the inner wall of the slot, forming a tight fit between the slot and the fixing plate.

[0009] As a further improvement of this utility model: a rectangular through groove is opened on the top outer wall of the protective cover, and a transparent observation window is adhered to the inner wall of the rectangular through groove.

[0010] As a further embodiment of this utility model: one end of the inner wall of the protective cover is connected to a heating shell, and one end of the heating shell is fixed with an air intake fan by screws, and the inner wall of the heating shell is equipped with equally spaced electric heating wires.

[0011] As a further embodiment of this utility model: a temperature sensor is fixed on one inner wall of the protective cover, and a PLC controller is installed on the outer wall of the protective cover. The PLC controller is connected to a servo motor, an electric telescopic rod, an air intake fan, an electric heating wire, and a temperature sensor via signal lines, and the PLC controller is connected to an external power supply via wires.

[0012] As a further improvement of this utility model: the inner wall of the U-shaped pull rod is provided with an arc-shaped chamfer, and the width of the U-shaped pull rod is adapted to the width of the battery separator.

[0013] As a further improvement of this utility model: the end of the spring tension scale is fixed on the crossbar, and an electric telescopic rod is connected to one side of the crossbar.

[0014] Compared with the prior art, the present invention provides a battery separator tensile strength testing device, which has the following beneficial effects:

[0015] 1. The battery separator tensile strength testing device designed in this paper utilizes a quick-connect fixing plate and a matching insertion slot to quickly and easily fix the battery separator. This makes installation convenient. Furthermore, the device is equipped with a servo motor that drives a worm gear to rotate, thereby adjusting the tightness of the battery separator for convenient subsequent testing.

[0016] 2. The battery separator tensile strength testing device designed in this paper uses a U-shaped pull rod to pass through one side of the battery separator during the battery separator strength testing process, and uses a spring tension scale for traction treatment, thereby stretching the battery separator to achieve the detection of the critical strength value. The specific result can be obtained by directly reading the value of the spring tension scale during the testing process. The operation is simple and the data is accurate.

[0017] 3. In the battery separator tensile strength testing device designed in this paper, in order to further simulate the battery separator strength under different environments during the battery separator strength testing process, a protective cover is set at the battery separator testing position for sealing treatment, and a heating treatment is carried out, so as to continuously detect and observe the effect of temperature on the battery separator strength, thereby providing more accurate test results and making the test results more reliable.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a battery separator tensile strength testing device proposed in this utility model;

[0020] Figure 2 This is a side view of the internal structure of the protective cover of a battery separator tensile strength testing device proposed in this utility model;

[0021] Figure 3 This is a first-view structural schematic diagram of a battery separator tensile strength testing device proposed in this utility model.

[0022] Figure 4 This is a partial structural schematic diagram of a battery separator tensile strength testing device proposed in this utility model.

[0023] In the diagram: 1. Fixed base; 2. L-shaped fixing plate; 3. Tensioning roller; 4. Worm gear; 5. Worm; 6. Servo motor; 7. Insertion slot; 8. Fixing plate; 9. Guide rail; 10. Guide block; 11. U-shaped tie rod; 12. Mounting slot; 13. Connecting rod; 14. Lifting ring; 15. Spring tension scale; 16. Crossbar; 17. Electric telescopic rod; 18. Protective cover; 19. Transparent observation window; 20. Heating shell; 21. Air intake fan; 22. Electric heating wire; 23. Temperature sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1:

[0026] A battery separator tensile strength testing device, in this embodiment, such as... Figure 1-4As shown, the device includes a fixed base 1. L-shaped fixing plates 2 are welded to the outer walls of both ends of the top of the fixed base 1. Symmetrically distributed tension rollers 3 are rotatably mounted between the two L-shaped fixing plates 2. A worm gear 4 is welded to one outer wall of each tension roller 3, and a worm 5 meshes with one side of the worm gear 4. A servo motor 6 is connected to the axis of the worm 5. A guide rail 9 is parallel to the length of the top outer wall of the fixed base 1. Guide blocks 10 are slidably inserted into the inner wall of the guide rail 9, and U-shaped pull rods 11 are welded between the guide blocks 10. An installation groove 12 is opened on one inner wall of the U-shaped pull rod 11, and a connecting rod 13 is hinged to the other inner wall of the U-shaped pull rod 11. A lifting ring 14 is welded to the middle outer wall of the connecting rod 13, and a spring tension scale 15 is fastened to the lifting ring 14. A protective cover 18 is snapped and fixed to the top of the fixed base 1.

[0027] The battery separator can be quickly snapped into place by using a fast-fitting insert plate 8 and a snap-fit ​​slot 7. This allows for easy installation. In addition, the servo motor 6 drives the worm gear 4 to rotate, which allows for adjustment of the tightness of the battery separator, facilitating subsequent testing and processing.

[0028] The outer wall of one side of the tensioning roller 3 has an insertion slot 7, and the inner wall of the insertion slot 7 is fixedly fitted with a fixing plate 8. The insertion slot 7 and the fixing plate 8 form a tight fit. The outer wall of the top of the protective cover 18 has a rectangular through slot, and the inner wall of the rectangular through slot is bonded with a transparent observation window 19.

[0029] The inner wall of one end of the protective cover 18 is connected to the heating shell 20, and one end of the heating shell 20 is fixed with an air intake fan 21 by screws. The inner wall of the heating shell 20 is equipped with equally spaced electric heating wires 22.

[0030] A temperature sensor 23 is fixed on one inner wall of the protective cover 18, and a PLC controller is installed on the outer wall of the protective cover 18. The PLC controller is connected to a servo motor 6, an electric telescopic rod 17, an air intake fan 21, an electric heating wire 22 and a temperature sensor 23 via signal lines, and the PLC controller is connected to an external power supply via wires.

[0031] During the strength testing of the battery separator, a U-shaped pull rod 11 is inserted through one side of the battery separator, and a spring tension 15 is used for traction to stretch the battery separator and achieve the strength critical value test. The specific result can be obtained by directly reading the value of the spring tension 15 during the test. The operation is simple and the data is accurate.

[0032] In this embodiment, one end of the battery separator to be tested is first placed on the outer wall of the tension roller 3, and fixed by inserting the fixing plate 8 into the insertion slot 7. Then, the other end of the battery separator is fixed to another tension roller 3. After fixing, the servo motor 6 drives the worm gear 5 to rotate, thereby driving the worm gear 4 to rotate, thus tensioning the battery separator. Then, the U-shaped pull rod 11 is inserted into one side of the battery separator, and then the connecting rod 13 is snapped into the mounting slot 12, and the U-shaped pull rod 11 is then inserted into the mounting slot 12. Rod 11 is slidably inserted into the guide rail 9, and spring tension scale 15 is hung on the hanging ring 14. The spring tension scale 15 is moved by the electric telescopic rod 17. Then, the data on the spring tension scale 15 is directly read to read the critical value when the battery separator is damaged. After reading the reading at normal room temperature, the protective cover 18 is placed on top of the fixed base 1, and the electric heating wire 22 is activated to heat the temperature inside the protective cover 18, so that the battery separator is subjected to strength tests at different temperatures, and then the values ​​at different temperatures are read.

[0033] Example 2:

[0034] A battery separator tensile strength testing device, such as Figure 1-4 As shown, this embodiment makes the following additions based on embodiment 1: the inner wall of the U-shaped pull rod 11 is provided with an arc-shaped chamfer, and the width of the U-shaped pull rod 11 is adapted to the width of the battery separator. The end of the spring tension bar 15 is fixed on the crossbar 16, and an electric telescopic rod 17 is connected to one side of the crossbar 16.

[0035] In this embodiment, during the battery separator strength testing process, in order to further simulate the battery separator strength under different environments, a protective cover 18 is set at the battery separator testing location for sealing treatment, and a heating treatment is performed to continuously detect and observe the effect of temperature on the battery separator strength, thereby providing more accurate test results and making the test results more reliable.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery separator tensile strength testing device, comprising a fixed base (1), characterized in that, The top two ends of the fixed base (1) are welded with L-shaped fixing plates (2), and symmetrically distributed tension roller shafts (3) are rotatably installed between the two L-shaped fixing plates (2). A worm wheel (4) is welded to one side of the outer wall of the tension roller shaft (3), and a worm (5) is meshed on one side of the worm wheel (4). A servo motor (6) is connected to the axis of the worm (5), and a guide rail (9) is arranged parallel to the length direction on the top outer wall of the fixed base (1). The inner wall of the fixed base (1) is slidably connected to a guide block (10), and a U-shaped tie rod (11) is welded between the guide blocks (10). One side of the inner wall of the U-shaped tie rod (11) has an installation groove (12), and the other side of the inner wall of the U-shaped tie rod (11) is hinged to a connecting rod (13). A lifting ring (14) is welded to the outer wall of the middle part of the connecting rod (13), and a spring tension scale (15) is fastened on the lifting ring (14). A protective cover (18) is snapped and fixed to the top of the fixed base (1).

2. The battery separator tensile strength testing device according to claim 1, characterized in that, The tensioning roller (3) has an insertion slot (7) on one side of its outer wall, and a fixing plate (8) is fixedly engaged with the inner wall of the insertion slot (7). The insertion slot (7) and the fixing plate (8) form a tight fit.

3. The battery separator tensile strength testing device according to claim 1, characterized in that, The protective cover (18) has a rectangular through groove on the top outer wall, and a transparent observation window (19) is attached to the inner wall of the rectangular through groove.

4. The battery separator tensile strength testing device according to claim 3, characterized in that, The inner wall of one end of the protective cover (18) is connected to the heating shell (20), and one end of the heating shell (20) is fixed with an air intake fan (21) by screws. The inner wall of the heating shell (20) is equipped with equally spaced electric heating wires (22).

5. The battery separator tensile strength testing device according to claim 4, characterized in that, A temperature sensor (23) is fixed on one inner wall of the protective cover (18), and a PLC controller is installed on the outer wall of the protective cover (18). The PLC controller is connected to a servo motor (6), an electric telescopic rod (17), an air intake fan (21), an electric heating wire (22), and a temperature sensor (23) via signal lines. The PLC controller is also connected to an external power supply via wires.

6. The battery separator tensile strength testing device according to claim 1, characterized in that, The inner wall of the U-shaped pull rod (11) is provided with a rounded chamfer, and the width of the U-shaped pull rod (11) is adapted to the width of the battery separator.

7. The battery separator tensile strength testing device according to claim 1, characterized in that, The end of the spring tension bar (15) is fixed to the crossbar (16), and an electric telescopic rod (17) is connected to one side of the crossbar (16).

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