Test device

Abstract

The utility model provides a kind of testing device.The testing device includes: clamping component, including first clamping piece and second clamping piece, at least one of first clamping piece and second clamping piece can be moved to the direction close to or away from each other, and the clamping space for clamping the shell to be measured is formed between first clamping piece and second clamping piece;Sealing limiting component, including sealing structure and limiting structure, sealing structure is configured as the explosion-proof valve capable of sealing the shell to be measured, limiting structure is located above sealing structure, and sealing structure can be positioned in the thickness direction of sealing structure.The technical scheme of the utility model's testing device can solve the problem that existing detection device cannot effectively detect weld strength.

Description

Technical Field

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

[0002] Lithium-ion batteries are a crucial energy component in modern portable electronic devices, electric vehicles, and energy storage systems, and their safety and reliability are of paramount importance. In lithium-ion battery manufacturing, the welding process between the battery casing and the top cover is a critical step in ensuring battery sealing and safety. The quality of the welding directly affects the battery's lifespan and safety performance; therefore, testing the welding strength is an essential step in the lithium-ion battery production process.

[0003] Currently, the welding strength is generally tested by water-filled air-explosion test. However, the existing testing equipment is suitable for structures with explosion-proof valves installed on thicker aluminum substrates. If the explosion-proof valve is installed on a thinner aluminum substrate, the valve will crack and leak before the air filling reaches the test strength of the weld, making it impossible to effectively test the weld strength. Utility Model Content

[0004] The main purpose of this invention is to provide a testing device that can solve the problem that existing testing devices cannot effectively detect weld strength.

[0005] To achieve the above objectives, this utility model provides a testing device, comprising: a clamping assembly including a first clamping member and a second clamping member, at least one of the first clamping member and the second clamping member being movable toward or away from each other, and a clamping space for clamping the housing to be tested being formed between the first clamping member and the second clamping member; and a sealing and limiting assembly including a sealing structure and a limiting structure, wherein the sealing structure is configured as an explosion-proof valve capable of sealing the housing to be tested, and the limiting structure is located above the sealing structure and is capable of limiting the sealing structure in the thickness direction of the sealing structure.

[0006] Furthermore, the sealing structure includes an adhesive layer that presses onto the explosion-proof valve and is capable of sealing the explosion-proof valve.

[0007] Furthermore, the thickness of the adhesive layer is H1, and the distance between the side wall of the housing to be tested with the explosion-proof valve and the top surface of the first clamping member is H2. H1 and H2 satisfy: H1≥H2.

[0008] Furthermore, the limiting structure presses down on the adhesive layer and can apply a compressive force to the adhesive layer.

[0009] Furthermore, the adhesive layer completely covers the side wall of the housing under test where the explosion-proof valve is located. Along the first direction, both ends of the limiting structure are constructed to protrude from the opposite ends of the housing under test, and the bottom surface of the limiting structure is in contact with the top surface of the adhesive layer.

[0010] Furthermore, the limiting structure is located above the first clamping member and the second clamping member, and both the first clamping member and the second clamping member are fixedly connected to the limiting structure.

[0011] Furthermore, the limiting structure is provided with two through slots extending along the second direction. The two through slots are spaced apart at opposite ends of the limiting structure along the first direction. Along the first direction, at least one stud is provided at opposite ends of the first clamping member and the second clamping member. The stud is configured to pass through the corresponding through slot. The testing device also includes at least two locking members, which are provided in one-to-one correspondence with at least two studs. The locking members are locked at the protruding ends of the corresponding studs.

[0012] Furthermore, along the first direction, the bottom of each of the opposite ends of the limiting structure is provided with a protrusion, the sealing structure is located between the two protrusions, the width of the protrusion is L1, the distance between the first clamping member and the second clamping member is L2, L1 is less than or equal to L2, and the bottom surface of the protrusion is in contact with the side wall surface of the housing to be tested which is provided with the explosion-proof valve.

[0013] Furthermore, the testing device also includes a fixing member, the first clamping member and the fixing member are spaced apart and fixedly connected along the second direction, and the second clamping member is slidably disposed between the first clamping member and the fixing member.

[0014] Furthermore, along the first direction, guide posts are provided at both ends of the fixture. The two ends of the guide posts are fixedly connected to the first clamping member and the fixture, respectively. The guide posts pass through the second clamping member. The testing device also includes an adjusting member. The first end of the adjusting member is threadedly engaged with the fixture. The second end of the adjusting member passes through the fixture and is rotatably connected to the second clamping member.

[0015] The technical solution of this utility model includes a sealing and limiting component comprising a sealing structure and a limiting structure. The sealing structure seals the explosion-proof valve of the test housing, preventing damage and leakage of the explosion-proof valve during the pressurization process of the test housing. The limiting structure is located above the sealing structure and can limit the sealing structure in the thickness direction. Thus, under the combined action of the limiting and sealing structures, the explosion-proof valve can be limited in the thickness direction, preventing excessive deformation of the explosion-proof valve during the pressurization process. This ensures that the explosion-proof valve will not become a weak point when subjected to test pressure, and prevents the explosion-proof valve from cracking and leaking before the pressurization reaches the weld strength test value. Consequently, the weld strength can be successfully and effectively tested without being affected by the condition of the explosion-proof valve. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of a testing device according to an embodiment of the present invention is shown;

[0018] Figure 2 An exploded view of a test apparatus according to an embodiment of the present invention is shown;

[0019] Figure 3 An exploded view of a test apparatus according to an embodiment of the present invention is shown;

[0020] Figure 4 An exploded view of a test apparatus according to an embodiment of the present invention is shown;

[0021] Figure 5 An exploded view of a test apparatus according to an embodiment of the present invention is shown;

[0022] Figure 6 A partial structural schematic diagram of a testing device according to an embodiment of the present invention is shown;

[0023] Figure 7 It shows Figure 6 Enlarged view of point A;

[0024] Figure 8 A perspective view of the limiting structure according to an embodiment of the present invention is shown;

[0025] Figure 9 A schematic diagram of the limiting structure according to an embodiment of the present invention is shown;

[0026] Figure 10 A side view of a limiting structure according to an embodiment of the present invention is shown.

[0027] The above figures include the following reference numerals:

[0028] 10. Clamping assembly; 11. First clamping component; 12. Second clamping component; 13. Stud; 14. Locking component; 20. Housing to be tested; 21. Explosion-proof valve; 30. Sealing and limiting assembly; 31. Sealing structure; 311. Adhesive layer; 32. Limiting structure; 321. Through groove; 322. Protrusion; 40. Fixing component; 41. Guide post; 50. Adjusting component; 60. Air duct; 70. Rotary handle. Detailed Implementation

[0029] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] See also Figures 1 to 10As shown, this utility model provides a testing device, which includes: a clamping assembly 10, including a first clamping member 11 and a second clamping member 12, at least one of the first clamping member 11 and the second clamping member 12 being movable toward or away from each other, and a clamping space for clamping the housing 20 to be tested is formed between the first clamping member 11 and the second clamping member 12; and a sealing and limiting assembly 30, including a sealing structure 31 and a limiting structure 32, the sealing structure 31 being configured to seal the explosion-proof valve 21 of the housing 20 to be tested, and the limiting structure 32 being located above the sealing structure 31 and being able to limit the sealing structure 31 in the thickness direction.

[0031] In this embodiment, the clamping assembly 10 is composed of a first clamping member 11 and a second clamping member 12. The housing 20 to be tested is clamped between the first clamping member 11 and the second clamping member 12. At least one clamping member can move towards or away from each other, so that the testing device can be adapted to housings 20 of different specifications, thereby improving the applicability of the testing device.

[0032] The sealing and limiting assembly 30 includes a sealing structure 31 and a limiting structure 32. The sealing structure 31 is used to seal the explosion-proof valve 21 of the housing 20 under test, preventing the explosion-proof valve 21 from breaking and leaking during the inflation and pressurization process of the housing 20 under test. The limiting structure 32 is located above the sealing structure 31 and can limit the sealing structure 31 in the thickness direction. Thus, under the combined action of the limiting structure 32 and the sealing structure 31, the explosion-proof valve 21 can be limited in the thickness direction, preventing the explosion-proof valve 21 from deforming excessively during inflation. This ensures that the explosion-proof valve 21 will not become a weak point when subjected to test pressure, and prevents the explosion-proof valve 21 from cracking and leaking before the inflation reaches the weld strength test value. As a result, the weld strength can be successfully and effectively tested without being affected by the state of the explosion-proof valve 21.

[0033] In one embodiment, the limiting structure 32 is made of aluminum alloy.

[0034] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the sealing structure 31 includes an adhesive layer 311, which covers and presses onto the explosion-proof valve 21 and can seal the explosion-proof valve 21.

[0035] In this embodiment, the adhesive layer 311 completely covers the explosion-proof valve 21. The adhesive layer 311 can adhere tightly to the explosion-proof valve 21 to form good physical contact. Even if there are minor unevenness or defects on the surface of the explosion-proof valve 21, the adhesive layer 311 can adapt to and fill these gaps, ensuring the sealing of the entire explosion-proof valve 21 area. During the inflation test, the sealing effect of the adhesive layer 311 can prevent gas from leaking from the explosion-proof valve 21, ensuring that the gas pressure environment inside the entire housing meets the test requirements, and improving the accuracy and reliability of weld strength testing.

[0036] It should be noted that the adhesive layer 311 can be applied before the housing 20 to be tested is placed between the first clamping member 11 and the second clamping member 12.

[0037] In one embodiment, the adhesive layer 311 is formed using AB glue or epoxy resin glue.

[0038] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the limiting structure 32 covers the adhesive layer 311 and can apply a compressive force to the adhesive layer 311.

[0039] In this embodiment, the limiting structure 32 applies a downward squeezing force, making the adhesive layer 311 adhere more tightly to the explosion-proof valve 21. On the one hand, it can ensure the sealing effect of the adhesive layer 311 on the explosion-proof valve 21. On the other hand, it can also apply a certain pressure to the explosion-proof valve 21 through the adhesive layer 311 to limit the explosion-proof valve 21 in the thickness direction, suppress the deformation of the explosion-proof valve 21 during inflation, reduce stress concentration, and thus achieve the purpose of detecting the weld strength between the shell and the cover plate of the test shell 20.

[0040] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the thickness of the adhesive layer 311 is H1, and the distance between the side wall of the housing 20 to be tested, where the explosion-proof valve 21 is provided, and the top surface of the first clamping member 11 is H2. H1 and H2 satisfy: H1≥H2.

[0041] In this embodiment, H1≥H2. On the one hand, this ensures that the adhesive layer 311 has sufficient thickness to resist gas pressure and maintain structural stability. The adhesive layer 311, in conjunction with the limiting structure 32, can prevent the explosion-proof valve 21 from breaking or failing prematurely. On the other hand, the sufficiently thick adhesive layer 311 can also absorb some of the pressure exerted on the explosion-proof valve 21 by the gas during the inflation process.

[0042] If the bottom surface of the limiting structure 32 that contacts the adhesive layer 311 is a plane, when H1 and H2 are equal, the bottom surface of the limiting structure 32 and the top surface of the adhesive layer 311 will just be in contact, but will not compress the adhesive layer 311. However, when H1 is greater than H2, the bottom surface of the limiting structure 32 will compress the adhesive layer 311.

[0043] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the adhesive layer 311 completely covers the side wall of the housing 20 to be tested, on which the explosion-proof valve 21 is provided. Along the first direction, both ends of the limiting structure 32 are constructed to protrude from the opposite ends of the housing 20 to be tested, and the bottom surface of the limiting structure 32 is in contact with the top surface of the adhesive layer 311.

[0044] In this embodiment, the bottom surface of the limiting structure 32 is attached to the top surface of the adhesive layer 311. The limiting structure 32 can limit the adhesive layer 311 in the thickness direction, and the adhesive layer 311 completely covers the side wall of the housing 20 under test where the explosion-proof valve 21 is located. Thus, under the combined action of the limiting structure 32 and the adhesive layer 311, the side wall of the housing where the explosion-proof valve 21 is located can be stopped and limited in the thickness direction, preventing the explosion-proof valve 21 and the side wall from being damaged due to excessive deformation before the inflation reaches the test strength of the weld, thus preventing the weld strength test from being achieved. Both ends of the limiting structure 32 are constructed to protrude from the opposite ends of the housing 20 under test, ensuring that the entire adhesive layer 311 can be limited.

[0045] It should be noted that compared to the solution where the adhesive layer 311 only covers the explosion-proof valve, the adhesive layer 311 completely covers the side wall of the housing 20 under test where the explosion-proof valve 21 is located, requiring a much larger amount of adhesive layer 311, approximately four times the amount required for the solution where the adhesive layer 311 only covers the explosion-proof valve.

[0046] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the limiting structure 32 is located above the first clamping member 11 and the second clamping member 12, and both the first clamping member 11 and the second clamping member 12 are fixedly connected to the limiting structure 32.

[0047] In this embodiment, the limiting structure 32 is fixedly connected with the first clamping member 11 and the second clamping member 12 to form a whole, which facilitates the subsequent placement of the whole in the water tank for weld strength testing.

[0048] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the limiting structure 32 is provided with a through groove 321 extending along the second direction. There are two through grooves 321, which are spaced apart at opposite ends of the limiting structure 32 along the first direction. Along the first direction, at least one stud 13 is provided at opposite ends of the first clamping member 11 and the second clamping member 12. The stud 13 is configured to pass through the corresponding through groove 321. The testing device also includes at least two locking members 14, which are provided in a one-to-one correspondence with at least two studs 13. The locking members 14 are locked at the protruding ends of the corresponding studs 13.

[0049] In this embodiment, the length of the through slot 321 is greater than or equal to the maximum distance between the first clamping member 11 and the second clamping member 12. The two through slots 321 extending along the second direction allow the stud 13 to move within a certain range along the second direction, enabling the detection device to adapt to different sizes of the test housing 20, thus improving the device's versatility and flexibility. The stud 13 passes through the corresponding through slot 321 and is locked by the locking member 14, thus connecting the limiting structure 32 with the first clamping member 11 and the second clamping member 12.

[0050] In one embodiment, the locking element 14 is a nut.

[0051] See also Figures 1 to 10 As shown, in one embodiment of the present invention, a stud 13 is provided at both ends of the first clamping member 11 and the second clamping member 12, which can not only achieve connection with the limiting structure 32, but also reduce costs.

[0052] In one embodiment, along the second direction, the width of the limiting structure 32 is greater than or equal to the distance between the first clamping member 11 and the second clamping member 12. This prevents the limiting structure from entering the area between the first clamping member 11 and the second clamping member 12 under external force, thus avoiding collision with the housing 20 under test and affecting the detection.

[0053] See also Figures 1 to 10 As shown, in one embodiment of the present invention, along the first direction, the bottom of both ends of the limiting structure 32 are provided with protrusions 322, the sealing structure 31 is located between the two protrusions 322, the width of the protrusions 322 is L1, the distance between the first clamping member 11 and the second clamping member 12 is L2, L1 is less than or equal to L2, and the bottom surface of the protrusions 322 is in contact with the side wall surface of the housing 20 to be tested where the explosion-proof valve 21 is provided.

[0054] In this embodiment, L1 is less than or equal to L2, ensuring that the protrusion 322 can be positioned between the first clamping member 11 and the second clamping member 12. The thickness L3 of the protrusion 322 is equal to H2 (the distance between the side wall of the housing 20 to be tested where the explosion-proof valve 21 is located and the top surface of the first clamping member 11), so that the protrusion 322 can fit against the side wall of the housing 20 to be tested where the explosion-proof valve 21 is located. In this way, the protrusion 322 can stop and limit the side wall of the side wall where the explosion-proof valve 21 is located in the thickness direction, preventing the side wall of the side wall where the explosion-proof valve 21 is located from being damaged due to excessive deformation before the gas inflation reaches the detection strength of the weld, thus making it impossible to detect the weld strength.

[0055] In one embodiment of the present invention, along the first direction, the end faces of the opposite ends of the sealing structure 31 are respectively attached to the end faces of the protrusions 322 on the same side. The two protrusions 322 cooperate to stop and limit the sealing structure 31 in the first direction, so as to prevent the sealing structure 31 from undergoing excessive deformation in the first direction.

[0056] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the testing device further includes a fixing member 40, a first clamping member 11 and the fixing member 40 are spaced apart and fixedly connected along a second direction, and a second clamping member 12 is slidably disposed between the first clamping member 11 and the fixing member 40.

[0057] In this embodiment, the first clamping member 11 is fixedly connected to the fixing member 40, and the second clamping member 12 is slidably disposed between the first clamping member 11 and the fixing member 40. The operator can flexibly adjust the distance between the second clamping member 12 and the first clamping member 11 according to the different sizes of the shell 20 to be tested, so as to adapt to different types of shells 20 to be tested, thereby improving the versatility and applicability of the testing device.

[0058] See also Figures 1 to 10 As shown, in one embodiment of the present invention, guide posts 41 are provided at both ends of the fixing member 40 along the first direction. The two ends of the guide posts 41 are fixedly connected to the first clamping member 11 and the fixing member 40 respectively. The guide posts 41 pass through the second clamping member 12. The testing device also includes an adjusting member 50. One end of the adjusting member 50 is threadedly engaged with the fixing member 40, and the other end of the adjusting member 50 passes through the fixing member 40 and is rotatably connected to the second clamping member 12.

[0059] In this embodiment, the guide post 41 guides the second clamping member 12 in the second direction, allowing the second clamping member 12 to slide stably along the second direction towards or away from the first clamping member 11 without deviation. The first end of the adjusting member 50 is threadedly engaged with the fixing member 40, and the second end of the adjusting member 50 passes through the fixing member 40 and is rotatably connected to the second clamping member 12. By rotating the adjusting member 50 clockwise or counterclockwise, the second clamping member 12 can be moved along the second direction towards or away from the first clamping member 11, so that the testing device can adapt to test housings 20 of different thicknesses.

[0060] In one embodiment, the second end of the adjusting member 50 passes through the fixing member 40 and is connected to the second clamping member 12 via a bearing. The inner ring of the bearing is fixed to the second end of the adjusting member 50, and the outer ring is fixed to the second clamping member 12. This allows the second clamping member 12 to move along the second direction toward or away from the first clamping member 11 when the adjusting member 50 is rotated, without causing the second clamping member 12 to rotate.

[0061] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the first end of the adjusting member 50 is also provided with a rotating handle 70 to facilitate the rotation operation of the adjusting member 50.

[0062] See also Figures 1 to 10 As shown, in one embodiment of the present invention, the testing device further includes an air guide tube 60. One end of the air guide tube 60 is configured to communicate with an air supply device, and the other end of the air guide tube 60 passes through the cover plate of the housing 20 to be tested and communicates with the inner cavity of the housing 20 to be tested. The air guide tube 60 and the cover plate of the housing 20 to be tested are sealed together.

[0063] In this embodiment, the housing under test 20 includes a housing and a cover plate. The explosion-proof valve 21 on the housing under test 20 is not located on the cover plate, but rather on another side wall surface of the housing under test 20. By establishing a sealed fit between the air guide pipe 60 and the cover plate, gas leakage from the connection point during inflation is prevented, improving the reliability of the test and the accuracy of the results. During testing, air is pressurized into the inner cavity of the housing under test 20 through the air guide pipe 60 to detect the weld strength between the housing and the cover plate.

[0064] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: the sealing and limiting components include a sealing structure and a limiting structure. The sealing structure is used to seal the explosion-proof valve of the test housing, preventing the explosion-proof valve from breaking and leaking during the inflation and pressurization process of the test housing. The limiting structure is located above the sealing structure and can limit the sealing structure in the thickness direction. Thus, under the combined action of the limiting structure and the sealing structure, the explosion-proof valve can be limited in the thickness direction, preventing excessive deformation of the explosion-proof valve during inflation. This ensures that the explosion-proof valve will not become a weak point when subjected to test pressure, and prevents the explosion-proof valve from cracking and leaking before the inflation reaches the weld strength test value. As a result, the weld strength can be successfully and effectively tested without being affected by the state of the explosion-proof valve.

[0065] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0066] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A testing device, characterized in that, include: The clamping assembly (10) includes a first clamping member (11) and a second clamping member (12), at least one of the first clamping member (11) and the second clamping member (12) being movable toward or away from each other, and a clamping space for clamping the housing (20) to be tested is formed between the first clamping member (11) and the second clamping member (12). The sealing and limiting assembly (30) includes a sealing structure (31) and a limiting structure (32). The sealing structure (31) is configured to seal the explosion-proof valve (21) of the housing (20) to be tested. The limiting structure (32) is located above the sealing structure (31) and can limit the sealing structure (31) in the thickness direction.

2. The testing apparatus according to claim 1, characterized in that, The sealing structure (31) includes an adhesive layer (311) that covers the explosion-proof valve (21) and is capable of sealing the explosion-proof valve (21).

3. The testing apparatus according to claim 2, characterized in that, The thickness of the adhesive layer (311) is H1, and the distance between the side wall of the housing (20) to be tested, where the explosion-proof valve (21) is located, and the top surface of the first clamping member (11) is H2. H1 and H2 satisfy: H1≥H2.

4. The testing apparatus according to claim 2, characterized in that, The limiting structure (32) covers the adhesive layer (311) and is able to apply a compressive force to the adhesive layer (311).

5. The testing apparatus according to claim 2, characterized in that, The adhesive layer (311) completely covers the side wall of the housing (20) to be tested where the explosion-proof valve (21) is located. Along the first direction, both ends of the limiting structure (32) are constructed to protrude from the opposite ends of the housing (20) to be tested. The bottom surface of the limiting structure (32) is in contact with the top surface of the adhesive layer (311).

6. The testing apparatus according to any one of claims 1 to 5, characterized in that, The limiting structure (32) is located above the first clamping member (11) and the second clamping member (12), and both the first clamping member (11) and the second clamping member (12) are fixedly connected to the limiting structure (32).

7. The testing apparatus according to claim 6, characterized in that, The limiting structure (32) is provided with a through groove (321) extending along the second direction. There are two through grooves (321). The two through grooves (321) are spaced apart at opposite ends of the limiting structure (32) along the first direction. Along the first direction, at least one stud (13) is provided at opposite ends of the first clamping member (11) and the second clamping member (12). The stud (13) is configured to pass through the corresponding through groove (321). The testing device also includes at least two locking members (14). The at least two locking members (14) are provided in a one-to-one correspondence with the at least two studs (13). The locking members (14) are locked at the protruding ends of the corresponding studs (13).

8. The testing apparatus according to any one of claims 1 to 5, characterized in that, Along the first direction, the bottom of each of the opposite ends of the limiting structure (32) is provided with a protrusion (322), the sealing structure (31) is located between the two protrusions (322), the width of the protrusion (322) is L1, the distance between the first clamping member (11) and the second clamping member (12) is L2, L1 is less than or equal to L2, and the bottom surface of the protrusion (322) is in contact with the side wall surface of the housing to be tested (20) where the explosion-proof valve (21) is provided.

9. The testing apparatus according to any one of claims 1 to 5, characterized in that, The testing device further includes a fixing member (40), the first clamping member (11) and the fixing member (40) are spaced apart and fixedly connected along the second direction, and the second clamping member (12) is slidably disposed between the first clamping member (11) and the fixing member (40).

10. The testing apparatus according to claim 9, characterized in that, Along the first direction, guide posts (41) are provided at both ends of the fixing member (40). The two ends of the guide posts (41) are fixedly connected to the first clamping member (11) and the fixing member (40) respectively. The guide posts (41) pass through the second clamping member (12). The testing device also includes an adjusting member (50). The first end of the adjusting member (50) is threadedly engaged with the fixing member (40). The second end of the adjusting member (50) passes through the fixing member (40) and is rotatably connected to the second clamping member (12).

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