Testing device

Abstract

The utility model relates to a testing device which comprises a box body, a tail gas treatment assembly and a flexible compression assembly, and the box body is provided with a testing cavity; the tail gas treatment assembly is communicated with the test cavity and can discharge tail gas in the test cavity; the flexible compression assembly comprises a flexible part at least partially located in the test cavity, and the flexible part can expand or contract in the test cavity. When the tail gas needs to be treated, the tail gas treatment assembly starts to work so as to discharge the tail gas in the test cavity into the tail gas treatment assembly and perform tail gas treatment; meanwhile, the flexible part is controlled to expand in the test cavity and gradually extrude the internal space of the test cavity, so that the interior of the test cavity is always in a normal-pressure or slightly high-pressure state, the tail gas in the test cavity is extruded to the tail gas treatment assembly, and outside air does not enter the test cavity at the moment; therefore, high-concentration tail gas in the testing cavity can be quickly discharged out of the testing cavity through the tail gas treatment assembly, and the tail gas treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a testing device. Background Art

[0002] A battery thermal runaway test device usually uses an exhaust gas treatment device to discharge the exhaust gas generated during the test out of the test device.

[0003] However, when the exhaust gas treatment device is working, outside air will continuously fill into the test device, causing the exhaust gas concentration in the test device to continuously decrease, resulting in the exhaust gas treatment device taking a long time to purify the air in the entire test device to within the standard. Utility Model Content

[0004] Based on this, it is necessary to provide a testing device to address the above problems in order to speed up the exhaust gas treatment efficiency.

[0005] The utility model provides a testing device, comprising: a box body having a testing cavity; an exhaust gas treatment component connected to the testing cavity and capable of discharging the exhaust gas in the testing cavity; and a flexible compression component, comprising a flexible member at least partially located in the testing cavity, wherein the flexible member can expand or contract in the testing cavity.

[0006] In the above-mentioned test device, when exhaust gas needs to be treated, the exhaust gas treatment component starts working to discharge the exhaust gas in the test chamber into the exhaust gas treatment component and perform exhaust gas treatment, so that the gas finally discharged to the outside is a gas that meets the emission requirements; at the same time, the flexible part is controlled to expand in the test chamber, gradually squeezing the internal space of the test chamber, so that the test chamber is always in a state of normal pressure or slightly high pressure, so as to squeeze the exhaust gas in the test chamber into the exhaust gas treatment component, and at this time the outside air will not enter the test chamber, so that the high concentration of exhaust gas in the test chamber can be quickly discharged from the test chamber through the exhaust gas treatment component to speed up the exhaust gas treatment efficiency; after the exhaust gas treatment is completed, the exhaust gas treatment component stops working, and the flexible part is controlled to shrink and reset, so that outside air can enter the test chamber.

[0007] In one embodiment, the flexible compression assembly further includes a mounting box arranged on the inner wall of the test cavity, the mounting box being provided with a mounting groove, and in a retracted state, the flexible member is accommodated in the mounting groove; or, the inner wall of the test cavity is provided with a mounting groove, and in a retracted state, the flexible member is accommodated in the mounting groove.

[0008] With such arrangement, in the contracted state, the flexible member can be accommodated in the mounting groove to protect the flexible member and also to prevent the flexible member from affecting the normal progress of the test in the test cavity.

[0009] In one embodiment, the testing device further includes an air blowing component at least partially located in the testing cavity, and the air blowing component is capable of blowing air toward the inner wall of the testing cavity.

[0010] With such arrangement, when the air blowing assembly blows air toward the inner wall of the test cavity, the air can blow away dust and impurities adhering to the inner wall of the test cavity.

[0011] In one embodiment, the air blowing assembly includes an air blowing pipe arranged on the inner wall of the test cavity, and the air blowing pipe is provided with an air blowing port.

[0012] Such an arrangement enables the gas blown out from the air outlet of the air blowing pipe to flow along the inner wall of the test cavity, and dust and impurities adhering to the test cavity are more easily blown away.

[0013] In one embodiment, the testing device further comprises a spray assembly at least partially located in the testing cavity, and the spray assembly is capable of spraying liquid into the testing cavity.

[0014] With this arrangement, when the test sample is on fire or about to catch fire, the fire extinguishing liquid can be sprayed through the spray assembly to extinguish the fire and cool the test sample, preventing the high temperature flame from damaging other components such as the flexible parts in the test cavity.

[0015] In one embodiment, the spray assembly includes a spray pipe disposed on a top wall of the test chamber.

[0016] With such an arrangement, the liquid is sprayed onto the test sample that is on fire or about to catch fire through the spray port of the spray pipe, so as to better extinguish the flame of the test sample and cool the test sample.

[0017] In one embodiment, the bottom of the box body is further provided with a drain port capable of connecting the test cavity with the outside.

[0018] With such an arrangement, after the spray assembly sprays liquid into the test cavity, the drain port enables the user to drain the liquid from the test cavity, which is simple and convenient to operate.

[0019] In one embodiment, the box body is further provided with a one-way air inlet capable of connecting the test cavity with the outside.

[0020] With this arrangement, in the later stage of exhaust gas treatment, when the flexible part is in a fully expanded state, or when the flexible part expands to fill the entire test cavity, gas can be filled into the test cavity through the one-way air inlet to assist in discharging the remaining exhaust gas in the test cavity into the exhaust gas treatment component.

[0021] In one embodiment, the connection between any two adjacent inner walls of the test cavity is an arc-shaped structure.

[0022] Such an arrangement can reduce cleaning dead corners in the test chamber and improve the cleaning effect inside the test chamber.

[0023] In one embodiment, the flexible member is configured as an airbag.

[0024] With such an arrangement, the airbag has a greater deformation capability and a lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a testing device according to one embodiment of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the test device from another perspective;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure of the door panel in the open state in the test device;

[0029] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure of the test device from another perspective Figure 1 ;

[0030] Figure 5 for Figure 3 Schematic diagram of the three-dimensional structure of the test device from another perspective Figure 2 .

[0031] Figure numerals: 1. Box body; 11. Test chamber; 111. Side panel; 112. Door panel; 12. Drain outlet; 13. One-way air inlet; 14. Exhaust outlet; 2. Flexible compression assembly; 21. Installation box; 3. Blowing assembly; 31. Blowing pipe; 4. Spraying assembly; 41. Spraying pipe. DETAILED DESCRIPTION

[0032] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0033] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0035] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0037] Battery thermal runaway testers typically use an exhaust gas treatment device to remove exhaust gases generated during testing. However, as the exhaust gas treatment device operates, outside air continuously enters the test device, causing the exhaust gas concentration in the test device to continuously decrease. This results in the exhaust gas treatment device taking a long time to purify the air in the entire test device to within the specified range.

[0038] In order to solve the above problems, Figures 1 to 5 As shown, the utility model provides a testing device to accelerate the exhaust gas treatment efficiency.

[0039] like Figure 1 and Figure 3 As shown, specifically, the test device includes a box body 1, an exhaust gas treatment component (not shown) and a flexible compression component 2, wherein: the box body 1 has a test cavity 11; the exhaust gas treatment component is connected to the test cavity 11 and can discharge the exhaust gas in the test cavity 11; the flexible compression component 2 includes a flexible part (not shown) at least partially located in the test cavity 11, and the flexible part can expand or contract in the test cavity 11.

[0040] The test device provided in the embodiment of the present invention can be used for thermal runaway testing of batteries and other test samples. A sufficiently large space is preset inside the test cavity 11 to accommodate batteries of common sizes. During the test, the exhaust treatment component is in a closed state, and the test chamber 11 is a closed environment. The exhaust gas generated is collected in the test chamber 11 to prevent the exhaust gas from overflowing and polluting the environment or injuring the test personnel. After the test is completed, when the exhaust gas needs to be treated, the exhaust treatment component starts to work to discharge the exhaust gas in the test chamber 11 into the exhaust treatment component and perform exhaust treatment, so that the gas finally discharged to the outside is a gas that meets the emission requirements, and toxic and harmful gases are prevented from being discharged to the outside and polluting the environment or injuring the test personnel. At the same time, the flexible member is controlled to expand in the test chamber 11, gradually squeezing the internal space of the test chamber 11, so that the test chamber 11 is always at normal pressure or slightly high pressure, so as to squeeze the exhaust gas in the test chamber 11 into the exhaust treatment component, and at this time the outside air will not enter the test chamber 11, so that the high concentration of exhaust gas in the test chamber 11 can be quickly discharged from the test chamber 11 through the exhaust treatment component to speed up the exhaust treatment efficiency. After the exhaust treatment is completed, the exhaust treatment component stops working, and the flexible member is controlled to contract and reset, so that outside air can enter the test chamber 11.

[0041] The box body 1 can be configured as a test room or a test box or other structure with a closed space.

[0042] like Figure 1 and Figure 3As shown, in one embodiment, the box body 1 includes side panels 111 and a door panel 112 that enclose a test chamber 11. The door panel 112 is openable and closable on the side panel 111. Before the test, the user can open the door panel 112 and place the test sample into the test chamber 11, then close the door panel 112 and ensure that the door panel 112 is locked. After the test is completed, the user can open the door panel 112 again to observe or take out the test sample in the test chamber 11. Specifically, the inner wall of the test chamber 11 is configured as a pressure relief wall. When the test sample catches fire, the pressure relief wall can block the flames. In addition, the door panel 112 can be configured as an explosion-proof door to ensure the safety of the box body 1.

[0043] like Figure 1 As shown, in one embodiment, the box body 1 is further provided with a one-way air inlet 13 that connects the test chamber 11 with the outside world. The one-way air inlet 13 only allows air from the outside to flow into the test chamber 11 in one direction, while the air in the test chamber 11 cannot escape from the one-way air inlet 13 to the outside world. The one-way air inlet 13 can be provided on the door panel 112 or any other suitable location such as the top wall, side wall, or rear wall of the side panel 111. Specifically, during the test process, the one-way air inlet 13 is in a closed state to prevent external gas from entering the test chamber 11 and causing the pressure in the test chamber 11 to be too high; after the test is completed, in the early stage of exhaust gas treatment, the one-way air inlet 13 is still in a closed state to prevent external gas from entering the test chamber 11 and causing the exhaust gas concentration in the test chamber 11 to decrease and prolong the exhaust gas treatment time; in the later stage of exhaust gas treatment, when the flexible part is in a fully expanded state, or the flexible part expands to fill the entire test chamber 11, the one-way air inlet 13 can be opened, and gas can be filled into the test chamber 11 through the one-way air inlet 13 to assist the flexible part and the exhaust gas treatment component to discharge the remaining exhaust gas in the test chamber 11 into the exhaust gas treatment component, further speeding up the exhaust gas treatment efficiency and making the exhaust gas discharge more thorough; after the exhaust gas treatment is completed, continue to fill the test chamber 11 with gas through the one-way air inlet 13 to increase the internal air pressure of the test chamber 11, and also to assist in shrinking and resetting the flexible part.

[0044] In one embodiment, the flexible compression assembly further includes an air-inflating and exhausting member (not shown) connected to the flexible member, such as an air pump. After the test is completed, the air-inflating and exhausting member is controlled to start working to inflate the flexible member, causing the flexible member to expand within the test cavity 11 until the flexible member is in a fully expanded state, or the flexible member expands to fill the entire test cavity 11; after the exhaust gas treatment is completed, the air-inflating and exhausting member is controlled to start working again to discharge the gas within the flexible member, causing the flexible member to shrink and reset. The air-inflating and exhausting member can be opened and closed manually by remote control, or automatically opened and closed by program settings.

[0045] Of course, in other embodiments, the testing device may not include an inflation or exhaust component. After the test is completed, the air port of the flexible component is connected to an external inflation device, such as an air pump, a blower, etc., and the flexible component is inflated through the external inflation device, so that the flexible component expands in the test cavity 11 until the flexible component is in a fully expanded state, or the flexible component expands to fill the entire test cavity 11; after the exhaust gas treatment is completed, the air port of the flexible component is connected to an external exhaust device, such as an air pump, a vacuum machine, etc., and the flexible component is exhausted through the external inflation device to discharge the gas in the flexible component, so that the flexible component shrinks and resets.

[0046] like Figures 1 to 2 As shown, in one embodiment, the box body 1 is further provided with an exhaust port 14 connected to the test chamber 11, and the test device further includes a pipe connected to the exhaust port 14 (not shown). The end of the pipe away from the exhaust port 14 can be connected to the exhaust gas treatment component, and a vent valve, switch, cover and other structures for controlling the on / off of the exhaust port 14 can be provided at the exhaust port 14. During the test, the exhaust port 14 is in a closed state to prevent the exhaust gas in the test chamber 11 from overflowing through the exhaust port 14, thereby ensuring the normal progress of the test; after the test is completed, the exhaust gas in the test chamber 11 can be discharged to the exhaust gas treatment component through the exhaust port 14 and the pipe.

[0047] like Figures 1 to 2 As shown, in one embodiment, the exhaust port 14 is provided on a side wall of the side panel 111 opposite to the door panel 112, that is, the exhaust port 14 is provided on the rear wall of the side panel 111. In this way, the exhaust gas in the test chamber 11 mostly flows toward the rear wall of the side panel 111, preventing the exhaust gas from remaining in the area near the door panel 112. When the one-way air inlet 13 is provided on the door panel 112, the one-way air inlet 13 and the exhaust port 14 are arranged opposite to each other, and the one-way air inlet 13 is used to fill the test chamber 11 with gas, which can accelerate the flow rate of the exhaust gas in the test chamber 11 toward the rear wall of the side panel 111, thereby further improving the exhaust gas treatment efficiency. Of course, in other embodiments, the exhaust port 14 can also be provided at any other suitable position such as the top wall or side wall of the side panel 111.

[0048] like Figures 3 and 4As shown, in one embodiment, the flexible compression assembly 2 also includes a mounting box 21 arranged on the inner wall of the test cavity 11, and the mounting box 21 is provided with a mounting groove. In the retracted state, the flexible member is accommodated in the mounting groove. The mounting box 21 can be embedded in the box body 1 or protruded on the inner wall of the test cavity 11, with the notch of the mounting groove facing the test cavity 11 and communicating with the test cavity 11. In the retracted state, the flexible member can be accommodated in the mounting groove to protect the flexible member, and it can also prevent the flexible member from affecting the normal progress of the test in the test cavity 11. Among them, the mounting box 21 is set to a fireproof structure, such as a fire-resistant steel box, etc., to prevent the test sample from catching fire and causing structural deformation of the mounting box 21, thereby ensuring the stability and reliability of the mounting box 21.

[0049] In one embodiment, a mounting groove is formed in the inner wall of the test cavity 11. In the retracted state, the flexible member is accommodated in the mounting groove. The mounting groove is directly formed in the inner wall of the test cavity 11. Similarly, the notch of the mounting groove faces into the test cavity 11 and is in communication with the test cavity 11.

[0050] like Figures 3 and 4 As shown, in one embodiment, the mounting groove is provided on the top wall of the test cavity 11, and the opening of the mounting groove faces downward. Figure 3 In the direction indicated by arrow a, the flexible part pops out from the opening of the installation slot and expands downward; when the flexible part is evacuated, it moves along the Figure 3 In the opposite direction of the direction indicated by arrow a, the flexible member contracts upward and retracts into the installation groove.

[0051] In one embodiment, the mounting groove is provided at the junction of the top wall of the test cavity 11 and the side wall of the test cavity 11, that is, the mounting groove is provided at the edge of the top wall of the test cavity 11. This prevents the mounting groove and the flexible member therein from interfering with other structures within the test cavity 11, while also ensuring that the structure within the test cavity 11 is regular. Of course, in other embodiments, the mounting groove may also be provided at the edge of the side wall or rear wall of the test cavity 11, or the mounting groove may also be provided at any other suitable location, such as the middle area of the top wall, side wall, or rear wall of the test cavity 11.

[0052] In one embodiment, the flexible member is configured as an airbag. The airbag has a large deformability and is relatively low cost. The airbag is made of a fireproof material to prevent the test sample from catching fire and being destroyed. Of course, in other embodiments, the flexible member can also be configured as an airbag or other structure that can deform upon injection of gas, withstand high pressure, and withstand high temperatures. This embodiment of the utility model is not limited to this.

[0053] like Figure 5As shown, in one embodiment, the test device further includes an air blowing component 3 at least partially located in the test chamber 11, and the air blowing component 3 is capable of blowing air toward the inner wall of the test chamber 11. When the air blowing component 3 blows air toward the inner wall of the test chamber 11, the gas can blow away the dust and impurities adhering to the inner wall of the test chamber 11. The air blowing component 3 preferably works simultaneously with the exhaust gas treatment component to discharge the dust and impurities blown away from the inner wall of the test chamber 11 together with the exhaust gas out of the test chamber 11; of course, the air blowing component 3 can also work alone, and after the air blowing component 3 has finished working, the exhaust gas treatment component is turned on again to discharge the dust and impurities in the test chamber 11. In addition, a filter for filtering impurities and dust can also be provided in the exhaust gas treatment component or in the pipe connected to the exhaust port 14.

[0054] In one embodiment, the blowing assembly 3 includes a blowing pipe 31 arranged on the inner wall of the test chamber 11, and the blowing pipe 31 is provided with an air outlet. The blowing pipe 31 can be externally connected to an air pump, a blower or other device to blow air into the blowing pipe 31 through the air pump or the blower, and blow air toward the inner wall of the test chamber 11 through the air outlet of the blowing pipe 31. The blowing pipe 31 is arranged on the inner wall of the test chamber 11, so that the gas blown out from the air outlet of the blowing pipe 31 can flow along the inner wall of the test chamber 11, and the dust and impurities adhering to the test chamber 11 can be blown away more easily. In order to ensure the blowing effect of the blowing pipe 31, the blowing pipe 31 can be arranged at the connection between the bottom wall of the test chamber 11 and the side wall of the test chamber 11, that is, the blowing pipe 31 is arranged at the edge of the bottom wall of the test chamber 11, and the opening direction of the blowing outlet can be parallel to the inner wall of the test chamber 11, so that the gas blown out from the blowing outlet can flow along the inner wall of the test chamber 11. Figure 5 The air flows in the direction indicated by the arrow to blow away dust and impurities adhering to the side walls and bottom wall of the test chamber 11. Furthermore, when the mounting groove is directly formed on the inner wall of the test chamber 11, the flexible compression assembly 2 can be prevented from obstructing the airflow path of the blowing assembly 3, and no blind spots will be created for cleaning.

[0055] Specifically, the air outlet includes a first air outlet opening parallel to the side wall of the test cavity 11 and a second air outlet opening parallel to the bottom wall of the test cavity 11. The gas blown out from the first air outlet can be blown along the Figure 5 The air blown out from the second air outlet flows in the direction indicated by arrow b. Figure 5 Flows in the direction indicated by arrow c.

[0056] In one embodiment, the test chamber 11 is constructed as a square cavity, and the connection between any two adjacent inner walls of the test chamber 11 is an arc-shaped structure, that is, the adjacent surfaces of any two adjacent inner walls of the test chamber 11 are connected by a rounded corner. This can reduce cleaning blind spots within the test chamber 11 and facilitate the deflection of the gas blown by the blowing assembly 3 at the connection between two adjacent inner walls, thereby improving the cleaning effect of the interior of the test chamber 11. Of course, in other embodiments, the test chamber 11 can also be constructed as a spherical cavity or other shapes according to actual testing requirements.

[0057] like Figures 3 and 4 As shown, in one embodiment, the test device also includes a spray assembly 4 that is at least partially located in the test cavity 11, and the spray assembly 4 is capable of spraying liquid into the test cavity 11. When the test sample is on fire or is about to catch fire, the spray assembly 4 can spray a fire extinguishing liquid, such as ordinary water or liquid nitrogen, to extinguish the fire and cool the test sample, thereby preventing the high-temperature flame from damaging other components such as flexible parts in the test cavity 11. When the spray assembly 4 sprays a fast-cooling liquid when the test sample is about to catch fire, it can quickly cool the test sample, thereby preventing the test sample from catching fire, preserving the test sample, and providing an analysis case for subsequent experiments. Among them, the spray assembly 4 can be manually opened remotely, and a sensor can also be installed to detect the temperature inside the test cavity 11. When the sensor detects a high temperature, the spray assembly 4 is automatically opened.

[0058] In one embodiment, the spray assembly 4 includes a spray pipe 41 provided on the top wall of the test chamber 11. The spray pipe 41 has high temperature resistance, and when liquid nitrogen is used for fire extinguishing, the spray pipe 41 also needs to have low temperature resistance. The spray pipe 41 can be connected to an external water tank, a water pump or a water pump, so that the liquid in the water tank can be injected into the spray pipe 41 through the water pump or the water pump. The spray pipe 41 is provided with a spray port with an opening facing downward, so that the liquid can be sprayed onto the test sample that is on fire or about to catch fire through the spray port of the spray pipe 41, so as to better extinguish the flame of the test sample and cool the test sample. Specifically, in order to ensure the spraying effect of the spray pipe 41, the spray pipe 41 can be used as follows Figure 4 The U-shaped pipe shown, or a pipe in other shapes such as a X-shaped or a Feng-shaped pipe may also be used to ensure that the spraying range of the spray pipe 41 can cover the test sample.

[0059] like Figures 3 and 4As shown, the bottom of the box body 1 is also provided with a drain port 12 that connects the test chamber 11 with the outside world. During normal testing, drain port 12 can be blocked using a solenoid valve, switch, cover, or other structure to prevent exhaust gas from escaping through drain port 12. After the spray assembly 4 sprays liquid into the test chamber 11, drain port 12 can be opened and the liquid in the test chamber 11 can be discharged through drain port 12 using a water pump or other device. In this way, drain port 12 makes it easy for the user to drain the liquid from the test chamber 11, making operation simple and convenient.

[0060] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A testing device, characterized in that: include: The box body (1) has a test cavity (11); an exhaust gas treatment component, which is in communication with the test chamber (11) and is capable of discharging the exhaust gas in the test chamber (11); and A flexible compression assembly (2) comprises a flexible member at least partially located in the test cavity (11), wherein the flexible member is capable of expanding or contracting in the test cavity (11).

2. The testing device according to claim 1, wherein: The flexible compression assembly (2) further comprises a mounting box (21) arranged on the inner wall of the test cavity (11), the mounting box (21) being provided with a mounting groove, and the flexible member is accommodated in the mounting groove in a contracted state; or, The inner wall of the test cavity (11) is provided with a mounting groove, and in a contracted state, the flexible member is accommodated in the mounting groove.

3. The testing device according to claim 1, wherein: The testing device further comprises an air blowing component (3) at least partially located in the testing cavity (11), and the air blowing component (3) is capable of blowing air toward the inner wall of the testing cavity (11).

4. The testing device according to claim 3, characterized in that: The air blowing assembly (3) comprises an air blowing pipe (31) arranged on the inner wall of the test cavity (11), and the air blowing pipe (31) is provided with an air blowing port.

5. The testing device according to claim 1, wherein: The testing device further comprises a spray assembly (4) at least partially located in the testing cavity (11), and the spray assembly (4) is capable of spraying liquid into the testing cavity (11).

6. The testing device according to claim 5, characterized in that: The spray assembly (4) comprises a spray pipe (41) arranged on the top wall of the test chamber (11).

7. The testing device according to claim 5, characterized in that: The bottom of the box body (1) is also provided with a drain port (12) capable of connecting the test cavity (11) with the outside world.

8. The testing device according to any one of claims 1 to 7, characterized in that: The box body (1) is also provided with a one-way air inlet (13) capable of connecting the test cavity (11) with the outside world.

9. The testing device according to any one of claims 1 to 7, characterized in that: The connection between any two adjacent inner walls of the test cavity (11) is an arc-shaped structure.

10. The testing device according to any one of claims 1 to 7, characterized in that: The flexible member is configured as an airbag.

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