Verification box and verification system

Abstract

The utility model discloses a verification box and a verification system, and belongs to the technical field of batteries. The verification box comprises a box body, a mounting beam and a cover plate. The verification box can simulate a gas leakage path of a shell in an actual battery pack, that is, internal gas firstly passes through a gap between one side, facing the inner wall of the box body, of the mounting beam and the inner wall of the box body, then passes through the first strip-shaped groove and the second strip-shaped groove, and finally leaks to the external environment through the first through groove of the cover plate. The size of the first strip-shaped groove and the size of the second strip-shaped groove in one verification box can be different, so that the size of the sealant located in the first strip-shaped groove and the size of the sealant located in the second strip-shaped groove are different, and therefore one verification box can verify the sealing performance of the two sealants with different sizes. Therefore, the size of the sealant which can ensure that the air tightness of the accommodating cavity of the box body meets the requirement can be verified only by using a small number of verification boxes, the verification efficiency is improved, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a verification box and a verification system. BACKGROUND

[0002] Battery packs are used to provide power for various devices, and the sealing of the battery pack directly affects the safety of the use of the device. Before the battery pack is assembled to the device, the sealing of the battery pack needs to be verified to ensure that the sealing of the battery pack meets the requirements.

[0003] The battery pack can include a shell and a battery assembly, and the battery assembly is located inside the shell. At present, the sealing of the battery pack is usually verified by verifying the sealing of the shell to ensure the safe use of the battery assembly located inside the shell.

[0004] However, at present, the sealing of the battery pack is usually verified after the battery pack is manufactured, which results in low verification efficiency of the sealing of the battery pack. INNOVATION CONTENT

[0005] The present application provides a verification box and a verification system. The problem of low verification efficiency of the sealing of the battery pack in the prior art can be solved, and the technical solution is as follows:

[0006] In one aspect, a verification box is provided, comprising: a box body, a mounting beam, and a cover plate.

[0007] The box body has a receiving cavity, and the receiving cavity has an opening.

[0008] The mounting beam is mounted at the opening, and the mounting beam and the inner wall of the box body form a first slot and a second slot opposite to each other.

[0009] The cover plate covers the box body on the side of the opening, and the cover plate has at least one first through slot, and the first slot and the second slot are in communication with the first through slot.

[0010] The first slot and the second slot are used to accommodate sealing glue, and the sizes of the first slot and the second slot are different.

[0011] Optionally, the width of the first slot is the same as the width of the second slot, and the depth of the first slot is different from the depth of the second slot.

[0012] Alternatively, the depth of the first slot is the same as the depth of the second slot, and the width of the first slot is different from the width of the second slot.

[0013] Alternatively, the first strip-shaped groove has a different depth from the second strip-shaped groove, and the first strip-shaped groove has a different width from the second strip-shaped groove.

[0014] Optionally, the width of the first strip-shaped groove ranges from 1 mm to 10 mm; and the depth of the first strip-shaped groove ranges from 1 mm to 10 mm.

[0015] The width of the second strip-shaped groove ranges from 1 mm to 10 mm; and the depth of the second strip-shaped groove ranges from 1 mm to 10 mm.

[0016] Optionally, the mounting beam comprises a body portion, a first low-order portion, and a second low-order portion, the first low-order portion and the second low-order portion are respectively located on opposite sides of the body portion, and the first low-order portion and the second low-order portion are recessed inward relative to the inner wall of the box body and the body portion.

[0017] The first low-order portion, the inner wall of the box body, and the side of the body portion adjacent to the first low-order portion form the first strip-shaped groove.

[0018] The second low-order portion, the inner wall of the box body, and the side of the body portion adjacent to the second low-order portion form the second strip-shaped groove.

[0019] Optionally, the first low-order portion and the second low-order portion are respectively located on opposite sides of the body portion in a first direction.

[0020] The first strip-shaped groove and the second strip-shaped groove both extend in a second direction.

[0021] The first through groove extends in the first direction.

[0022] The first direction and the second direction intersect.

[0023] Optionally, in the first direction, the extension length of the first through groove is less than the length of the cover plate.

[0024] Optionally, the verification box further comprises a sealing plate, the sealing plate is located between the box body and the cover plate.

[0025] The sealing plate has at least one second through groove, the second through groove extends in the first direction, and the second through groove communicates with the first through groove.

[0026] Optionally, the box body has two support tables, the two support tables are oppositely arranged in the first direction, and the two support tables are both fixed on the inner wall of the box body.

[0027] The two support tables are used to support the mounting beam.

[0028] Optionally, the support table has a positioning column on the side facing the opening; the mounting beam has a positioning hole on the side facing the support table, and at least part of the positioning column is located in the positioning hole.

[0029] Optionally, the box further has a test interface, which is in communication with the accommodating cavity.

[0030] The test interface is used for accessing a test device.

[0031] In another aspect, a verification system is also provided, which includes at least two verification boxes as described above, and the first slot and the second slot in the at least two verification boxes have three or more different sizes.

[0032] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0033] The verification box can simulate the gas leakage path of the shell in the actual battery pack, that is, the internal gas first passes through the gap between the side of the mounting beam facing the inner wall of the box and the inner wall of the box, then passes through the first slot and the second slot, and finally leaks to the external environment through the first through slot of the cover plate. The sizes of the first slot and the second slot in one verification box can be different, so that the sizes of the sealant located in the first slot and the sealant located in the second slot are also different. In this way, the sealing performance of two sealants with different sizes can be verified by one verification box, so that only a small number of verification boxes are needed to verify the size of the sealant that can ensure that the gas tightness of the accommodating cavity of the box meets the requirements, thereby improving the verification efficiency and saving the cost. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 is a structural schematic view of a shell in a battery pack;

[0036] Figure 2 is a structural schematic view of a verification box provided by the embodiments of the present application;

[0037] Figure 3 is a sectional view of a verification box provided by the embodiments of the present application;

[0038] Figure 4This is a schematic diagram of another verification box provided in an embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the structure of a verification box without a cover provided in an embodiment of this application;

[0040] Figure 6 This is a schematic diagram of the structure of another verification box provided in the embodiments of this application;

[0041] Figure 7 This is a top view of a verification box provided in an embodiment of this application;

[0042] Figure 8 This is a cross-sectional view of another verification box provided in an embodiment of this application. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0044] like Figure 1 As shown, Figure 1 This is a structural diagram of a battery pack housing. The battery pack housing may include: a casing 01, a mounting beam 02, a first cover plate 03, and a second cover plate 04. The casing 01 may have a receiving cavity and a crossbeam 05. The crossbeam 05 can divide the receiving cavity of the casing 01 into two parts: an electrical compartment 011 and a battery compartment 012. The electrical compartment 011 can be used to house the battery management module, and the battery compartment 012 can be used to house the battery. The first cover plate 03 can cover the electrical compartment 011, and the second cover plate 04 can cover the battery compartment 012. The mounting beam 02 can be positioned opposite to the crossbeam 05 at the opening of the receiving cavity, and the mounting beam 02 can simultaneously support the first cover plate 03 and the second cover plate 04.

[0045] Therefore, by setting up the mounting beam 02, the first cover plate 03 and the second cover plate 04 can be set separately. This allows the battery management module located in the electrical compartment 011 to be repaired by simply removing the first cover plate 03, without having to remove the second cover plate 04 at the same time. This makes it easier to repair the battery management module located in the electrical compartment 011.

[0046] Currently, to facilitate the installation of the mounting beam 02, there is a gap between the mounting beam 02 and the inner wall of the box 01. Since there is also a gap between the first cover plate 03 and the second cover plate 04, the gap between the mounting beam 02 and the inner wall of the box 01 will be connected to the outside through the gap between the first cover plate 03 and the second cover plate 04, causing the electrical compartment 011 and the battery compartment 012 to be connected to the outside. Consequently, the receiving cavity of the box 01 will leak air through the gap between the mounting beam 02 and the inner wall of the box 01, as well as the gap between the first cover plate 03 and the second cover plate 04.

[0047] At present, in order to ensure the air tightness of the shell of the battery pack, a strip-shaped groove can be formed between the edge portion of the mounting beam 02 and the inner wall of the box body 01, and the sealant can be filled in the strip-shaped groove to seal the above-mentioned air leakage path by the sealant. In order to ensure that the air tightness of the shell of the battery pack meets the requirements, the sealant needs to have good sealing performance. However, the sealing performance of different types of sealants is different, and the sealing performance of the same type of sealant is different due to different sizes. Here, the sealant can fill the strip-shaped groove, and therefore the size of the sealant is the size of the strip-shaped groove.

[0048] At present, in order to obtain the type and corresponding size of the sealant that can ensure that the air tightness of the shell of the battery pack meets the requirements, generally, after the battery pack is manufactured, the battery pack is tested for air tightness, which is more wasteful of resources and leads to high testing cost.

[0049] The embodiment of the application provides a verification box, please refer to Figure 2 , Figure 2 is a structural schematic view of a verification box provided by the embodiment of the application. The verification box can include a box body 100, a mounting beam 200 and a cover plate 300. The box body 100 in the verification box can have a containing cavity K, and the containing cavity K can have an opening O.

[0050] It should be noted that the verification box is only used to verify the sealant and its corresponding size that can ensure that the air tightness of the containing cavity K of the box body 100 meets the requirements, and therefore the structure of the verification box only needs to simulate the air leakage path of the shell of the actual battery pack, that is, the verification box does not need to include the battery module and the battery management module located in the containing cavity of the shell of the actual battery pack, and therefore the containing cavity K of the box body 100 does not need to have a structure corresponding to the cross beam in the shell of the actual battery pack.

[0051] The mounting beam 200 in the verification box can be installed at the opening O of the containing cavity K, and the mounting beam 200 can form a first strip-shaped groove S1 and a second strip-shaped groove S2 in opposite arrangement between the inner wall of the box body 100. Here, it should be noted that please refer to Figure 3 , Figure 3 is a sectional view of a verification box provided by the embodiment of the application. In order to simulate the air leakage path of the containing cavity of the shell of the actual battery pack, the two ends of the mounting beam 300 in the verification box can have a gap between the side of the inner wall of the box body 100 and the inner wall of the box body 100, and the gap can be in communication with the first strip-shaped groove S1 and the second strip-shaped groove S2.

[0052] The cover plate 300 in the verification box can cover the box body 100 on the side of the opening O of the accommodating cavity K of the box body 100, and the cover plate 300 can have at least one first through slot A1, and the first strip-shaped slot S1 and the second strip-shaped slot S2 can both communicate with the first through slot A1. It should be noted that the first through slot A1 of the cover plate 300 simulates the gap between the first cover plate and the second cover plate in the actual battery pack shell.

[0053] In this way, the gas leakage path of the accommodating cavity K of the box body 100 is that the internal gas first passes through the gap between the side of the mounting beam 300 facing the inner wall of the box body 100 and the inner wall of the box body 100, then passes through the first strip-shaped slot S1 and the second strip-shaped slot S2, and finally leaks to the external environment through the first through slot A1 of the cover plate 300. Therefore, in order to seal the above-mentioned gas leakage path, the first strip-shaped slot S1 and the second strip-shaped slot S2 can each contain sealing glue, so that the sealing glue located in the first strip-shaped slot S1 and the second strip-shaped slot S2 can seal the above-mentioned gas leakage path, so as to ensure the air tightness of the accommodating cavity K of the box body 100.

[0054] It should be noted that the sealing glue needs to fill the first strip-shaped slot S1 and the second strip-shaped slot S2, so that in an ideal condition, the size of the sealing glue is the size of the first strip-shaped slot S1 or the second strip-shaped slot S2. The sealing performance of the sealing glue is different, in order to obtain the sealing glue and its corresponding size which can ensure that the air tightness of the actual battery pack shell meets the requirements, a plurality of verification boxes with different sizes of strip-shaped slots can be used to verify the sealing performance of sealing glue with different sizes, and then the sealing glue with the sealing performance meeting the requirements and its corresponding size can be obtained.

[0055] In the present application, the sizes of the first strip-shaped slot S1 and the second strip-shaped slot S2 in the verification box can be different, and the sizes of the sealing glue located in the first strip-shaped slot S1 and the sealing glue located in the second strip-shaped slot S2 are also different. In this way, one verification box can verify the sealing performance of two sealing glues with different sizes. In this way, only a small number of verification boxes are needed to verify the size of the sealing glue which can ensure that the air tightness of the accommodating cavity K of the box body 100 meets the requirements, thereby improving the verification efficiency and saving the cost.

[0056] In summary, the embodiment of the present application provides a verification box, comprising a box body, a mounting beam and a cover plate. The verification box can simulate the gas leakage path of the shell in the actual battery pack, that is, the internal gas first passes through the gap between the side of the inner wall of the box body facing the mounting beam and the inner wall of the box body, then passes through the first and second slot, and finally passes through the first through slot of the cover plate to the external environment. The size of the first slot and the second slot in one verification box can be different, so that the size of the sealant in the first slot and the size of the sealant in the second slot are also different. In this way, one verification box can verify the sealing performance of two different sizes of sealants, so that only a small number of verification boxes are needed to verify the size of the sealant that can ensure that the air tightness of the accommodating cavity of the box body meets the requirements, thereby improving the verification efficiency and saving costs.

[0057] In the present application, the size of the first slot S1 and the size of the second slot S2 in the plurality of verification boxes can be different, so that the same model but different size sealants can be verified to obtain the size of the sealant of the same model that can ensure that the air tightness of the accommodating cavity K of the box body 100 meets the requirements. Alternatively, the size of the first slot S1 in the plurality of verification boxes is the same, or the size of the second slot S2 in the plurality of verification boxes is the same, so that the same size but different model sealants can be verified to obtain the model of the sealant of the same size that can ensure that the air tightness of the accommodating cavity K of the box body 100 meets the requirements.

[0058] Optionally, the size of the slot in the verification box can include the width of the slot and the depth of the slot, and the size of the sealant in the slot can include the width of the sealant and the height of the sealant. In this way, as shown in Figure 4 , Figure 4 is another structure diagram of the verification box provided by the embodiment of the present application. The first slot S1 and the second slot S2 with different sizes can have the following three cases:

[0059] In the first case: the width D1 of the first slot S1 is the same as the width D2 of the second slot S2, and the depth H1 of the first slot S1 is different from the depth H2 of the second slot S2.

[0060] In the second case: the depth H1 of the first slot S1 is the same as the depth H2 of the second slot S2, and the width D1 of the first slot S1 is different from the width D2 of the second slot S2.

[0061] In the third case: the depth H1 of the first slot S1 is different from the depth H2 of the second slot S2, and the width D1 of the first slot S1 is different from the width D2 of the second slot S2.

[0062] Optionally, asFigure 4 As shown, the width D1 of the first slot S1 can range from 1 mm to 10 mm, and the depth H1 of the first slot S1 can range from 1 mm to 10 mm. The width D2 of the second slot S2 can range from 1 mm to 10 mm, and the depth H2 of the second slot S2 can range from 1 mm to 10 mm. In this way, the dimensions of the first slot S1 and the second slot S2 in the verification box can be selected according to the above ranges to manufacture verification boxes with different dimensions of the slots.

[0063] Optionally, as shown in Figure 5 , Figure 5 is a structural schematic diagram of a verification box without a cover plate provided by an embodiment of the present application. The mounting beam 200 in the verification box can include a body portion 201, a first low-order portion 202, and a second low-order portion 203. The first low-order portion 202 and the second low-order portion 203 in the mounting beam 200 can be located on opposite sides of the body portion 201, respectively, and the first low-order portion 202 and the second low-order portion 203 can be recessed inward relative to the inner wall of the box body 100 and the body portion 201.

[0064] In this way, the first low-order portion 202, the inner wall of the box body 100, and the side of the body portion 201 adjacent to the first low-order portion 202 can form a first slot S1, and the second low-order portion 203, the inner wall of the box body 100, and the side of the body portion 201 adjacent to the second low-order portion 203 can form a second slot S2. The dimension of the recessing of the first low-order portion 202 inward relative to the inner wall of the box body 100 and the body portion 201 is the depth H1 of the first slot S1, and the dimension of the recessing of the second low-order portion 203 inward relative to the inner wall of the box body 100 and the body portion 201 is the depth H2 of the second slot S2.

[0065] Optionally, as shown in Figure 5 and Figure 6 , Figure 6 is a structural schematic diagram of another verification box provided by an embodiment of the present application. The first low-order portion 202 and the second low-order portion 203 in the mounting beam 200 can be located on opposite sides of the body portion 201 in the first direction X, respectively. Here, the first low-order portion 202 can have a gap between the side facing the inner wall of the box body 100 and the inner wall of the box body 100 in the first direction X, and the second low-order portion 203 can have a gap between the side facing the inner wall of the box body 100 and the inner wall of the box body 100 in the first direction X.

[0066] The first low-order portion 202, the inner wall of the box body 100, and the side of the body portion 201 adjacent to the first low-order portion 202 form a first strip-shaped slot S1, which can extend along the second direction Y. The second low-order portion 203, the inner wall of the box body 100, and the side of the body portion 202 adjacent to the second low-order portion 203 form a second strip-shaped slot S2, which can also extend along the second direction Y. The first through slot A1 of the cover plate 300 can extend along the first direction X. Here, the first direction X and the second direction Y can intersect, for example, the first direction X can be perpendicular to the second direction Y.

[0067] In this way, the intersection of the first through slot A1 of the cover plate 300 and the first strip-shaped slot S1, and the intersection of the first through slot A1 and the second strip-shaped slot S2 are the positions where the accommodation cavity K of the box body 100 communicates with the external environment. Therefore, the sealing glue located in the first strip-shaped slot S1 and the second strip-shaped slot S2 can seal the accommodation cavity K of the box body 100.

[0068] Optionally, as shown in Figure 6 In the first direction X, the extension length L1 of the first through slot A1 of the cover plate 300 can be less than the length L2 of the cover plate 300. That is, in the first direction X, the first through slot A1 does not completely penetrate the cover plate 300. It should be noted that the first through slot A1 of the cover plate 300 only simulates the gap between the first cover plate and the second cover plate in the actual battery pack, and the gap in the actual battery pack generally completely separates the first cover plate and the second cover plate. In this application, the first through slot A1 in the verification box does not completely separate the cover plate 300 in the first direction X, which makes the cover plate 300 a single plate body, so that when assembling the verification box, it is not necessary to consider how to splice the cover plate 300, thereby making the assembly of the verification box relatively simple.

[0069] Optionally, as shown in Figure 6 The verification box can further include a sealing plate 400, which can be located between the box body 100 and the cover plate 300. Here, the sealing plate 400 can be a plate structure made of sealing foam, and the sealing plate 400 can seal the interface between the box body 100 and the cover plate 300 to prevent the accommodation cavity K of the box body 100 from leaking air to the external environment through the gap between the box body 100 and the cover plate 300.

[0070] Optionally, as shown in Figure 6As shown, the sealing plate 400 can have at least one second through slot A2, which can extend along the first direction X. Here, the at least one second through slot A2 of the sealing plate 400 can correspond to the at least one first through slot A1 of the cover plate 300 one by one, and the second through slot A2 can communicate with the corresponding first through slot A1. That is, after the sealing plate 400 is arranged between the box body 100 and the cover plate 300, the containing cavity K of the box body 100 can only leak air to the outside environment through the intersection of the first through slot A1 and the second through slot A2 and the first strip-shaped slot S1 and the second strip-shaped slot S2.

[0071] As shown in the example, Figure 7 As shown, Figure 7 is a top view of a verification box provided by an embodiment of the present application. In the case where the cover plate 300 includes two first through slots A1 and the sealing plate 400 includes two corresponding second through slots A2, the first strip-shaped slot S1 and the second strip-shaped slot S2 can have four intersection points with the two first through slots A1, that is, the containing cavity K of the box body 100 can have four air leakage points.

[0072] Optionally, as shown in the example, Figure 5 As shown, the box body 100 can further have a test interface V, which can communicate with the containing cavity K of the box body 100. Here, the test interface V can be used to access a test device. In this way, after the first strip-shaped slot S1 and the second strip-shaped slot S2 in the verification box are filled with the sealing glue to be verified, the test device can communicate with the containing cavity K of the box body 100 through the test interface V, so that the test device can pressurize the containing cavity K of the box body 100. After the containing cavity K of the box body 100 is pressurized for a period of time, the pressure in the containing cavity K of the box body 100 can be tested again to determine the air tightness of the box body 100 by comparing the pressures.

[0073] It should be noted that after the containing cavity K of the box body 100 is pressurized, the intersection of the first through slot A1 and the first strip-shaped slot S1 and the second strip-shaped slot S2 can all leak air. And after the containing cavity K of the box body 100 is pressurized, the worker can directly determine the air leakage position, so that in one verification box, the sealing performance of two different sizes of sealing glue can be verified at the same time.

[0074] Optionally, as shown in the example, Figure 6 and Figure 8 As shown, Figure 8is another cross-sectional view of the verification box provided by the embodiment of the present application. The box body 100 can have two support tables 101, which can be oppositely arranged in the first direction X and can be fixed on the inner wall of the box body 100. Among them, the two support tables 101 in the box body 100 can be used to support the mounting beam 200. In this way, the mounting beam 200 can be located at the opening O of the containing cavity K of the box body 100 on the support table 101.

[0075] Optionally, as shown in Figure 6 and Figure 7 , the side of the support table 101 in the box body 100 towards the opening O can have a positioning column 1011. The side of the mounting beam 200 towards the support table 101 can have a positioning hole 300a matched with the positioning column 1011. At least part of the positioning column 1011 of the support table 101 can be located in the positioning hole 300a of the mounting beam 200, so that the mounting beam 200 can be installed through the positioning between the positioning column 1011 and the positioning hole 300a, which facilitates the installation of the mounting beam 200.

[0076] In summary, the embodiment of the present application provides a verification box, which comprises a box body, a mounting beam and a cover plate. The verification box can simulate the air leakage path of the shell in the actual battery pack, that is, the internal gas first passes through the gap between the side of the mounting beam towards the inner wall of the box body and the inner wall of the box body, then passes through the first and second strip-shaped grooves, and finally passes through the first through groove of the cover plate to the external environment. The sizes of the first and second strip-shaped grooves in one verification box can be different, so that the sizes of the sealant located in the first strip-shaped groove and the sealant located in the second strip-shaped groove are also different. In this way, one verification box can verify the sealing performance of two different sizes of sealants, so that only a small number of verification boxes are needed to verify the size of the sealant that can ensure that the air tightness of the containing cavity of the box body meets the requirements, thereby improving the verification efficiency and saving the cost.

[0077] The embodiment of the present application also provides a verification system, which can comprise at least two verification boxes. The verification boxes in the verification system can be any of the above-described verification boxes. The first and second strip-shaped grooves in at least two verification boxes in the verification system can have more than three different sizes.

[0078] In a possible case, when the first and second strip-shaped grooves in at least two verification boxes in the verification system have more than three different sizes, the first and second strip-shaped grooves in at least two verification boxes can accommodate the same type of sealant. The verification system can verify the sealing performance of more than three different sizes of the same type of sealant to obtain the size of the sealant that can ensure that the air tightness of the verification box meets the requirements.

[0079] In another possible case, in the case that the at least two verification boxes in the verification system have a plurality of first or second strip grooves of the same size, the first or second strip grooves of the same size can accommodate different types of sealants, and the verification system can be used to verify the sealing performance of the plurality of different types of sealants of the same size to obtain sealants that can ensure that the air tightness of the accommodating cavity of the box meets the requirements under a specific size.

[0080] In the present application, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.

[0081] The above only describes optional embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A verification box, characterized by, The utility model relates to a box body (100), mounting beam (200) and cover plate (300) are included. The box body (100) has the accommodation cavity (K) with the opening (O); The mounting beam (200) is installed at the opening (O), and the mounting beam (200) forms the opposite first strip slot (S1) and second strip slot (S2) between the inner wall of the box body (100); The cover plate (300) covers the box body (100) on the opening (O) side, and the cover plate (300) has at least one first through slot (A1), and the first strip slot (S1) and the second strip slot (S2) are communicated with the first through slot (A1); Wherein, the first strip slot (S1) and the second strip slot (S2) are used for accommodating sealant, and the size of the first strip slot (S1) and the second strip slot (S2) is different. The width (D1) of the first strip slot (S1) is same with the width (D2) of the second strip slot (S2), and the depth (H1) of the first strip slot (S1) is different with the depth (H2) of the second strip slot (S2); 2. The verification box of claim 1, wherein, Or, the depth (H1) of the first strip slot (S1) is same with the depth (H2) of the second strip slot (S2), and the width (D1) of the first strip slot (S1) is different with the width (D2) of the second strip slot (S2); Or, the depth (H1) of the first strip slot (S1) is different with the depth (H2) of the second strip slot (S2), and the width (D1) of the first strip slot (S1) is different with the width (D2) of the second strip slot (S2). The width (D1) of the first strip slot (S1) ranges from 1mm to 10mm; the depth (H1) of the first strip slot (S1) ranges from 1mm to 10mm; 3. The verification box of claim 2, wherein, The width (D2) of the second strip slot (S2) ranges from 1mm to 10mm; the depth (H2) of the second strip slot (S2) ranges from 1mm to 10mm. The mounting beam (200) includes: the body part (201), the first low order part (202) and the second low order part (203), the first low order part (202) and the second low order part (203) are located at the opposite two sides of the body part (201) respectively, and the first low order part (202) and the second low order part (203) are recessed inward relative to the inner wall of the box body (100) and the body part (201); 4. The authentication box according to any one of claims 1 to 3, characterized in that, Wherein, the first low order part (202), the inner wall of the box body (100) and the side of the body part (201) adjacent to the first low order part (202) form the first strip slot (S1); The second low order part (203), the inner wall of the box body (100) and the side of the body part (201) adjacent to the second low order part (203) form the second strip slot (S2). ​ 5. The verification box of claim 4, wherein, The first low-order part (202) and the second low-order part (203) are respectively located on opposite sides of the body part (201) in a first direction (X); The first strip-shaped slot (S1) and the second strip-shaped slot (S2) both extend along a second direction (Y); The first through slot (A1) extends along the first direction (X); The first direction (X) and the second direction (Y) intersect.

6. The verification box of claim 5, wherein, In the first direction (X), the extension length (L1) of the first through slot (A1) is less than the length (L2) of the cover plate (300).

7. The verification box of claim 5, wherein, The verification box further comprises a sealing plate (400) located between the box body (100) and the cover plate (300); The sealing plate (400) has at least one second through slot (A2) extending along the first direction (X), and the second through slot (A2) communicates with the first through slot (A1).

8. The verification box of claim 7, wherein, The box body (100) has two support tables (101) oppositely arranged in the first direction (X), and the two support tables (101) are both fixed on the inner wall of the box body (100); The two support tables (101) are used for supporting the mounting beam (200).

9. The verification box of claim 8, wherein, The side of the support table (101) facing the opening (O) has a positioning column (1011), and the side of the mounting beam (200) facing the support table (101) has a positioning hole (300a) matched with the positioning column (1011); at least part of the positioning column (1011) is located in the positioning hole (300a).

10. The verification box of claim 9, wherein, The box body (100) further has a test interface (V) communicating with the containing cavity (K); The test interface (V) is used for accessing a test device.

11. A verification system characterized by, The verification box comprises at least two verification boxes as claimed in any one of claims 1 to 10, and the first strip-shaped slot and the second strip-shaped slot in the at least two verification boxes have three or more different sizes.

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