Environmental testing apparatus and control methods

Abstract

This invention relates to the field of testing equipment technology, and discloses an environmental testing device and its control method. The environmental testing device includes a housing, a pressure relief cover, a door latch, an electromagnetic lock, a controller, and a sensing element. The electromagnetic lock includes a first adsorption end and a second adsorption end. The housing has a pressure relief port and is used for environmental testing. The pressure relief cover is located on the pressure relief port and is hinged to the housing. One end of the door latch is connected to the housing, and the other end is connected to the pressure relief cover. The door latch is used to lock the pressure relief cover to the housing and can be opened or locked under external force. The first adsorption end and the second adsorption end are arranged opposite each other, one of which is located on the pressure relief cover and the other on the housing. When the second adsorption end is energized, it can adsorb the first adsorption end to provide the external force to lock the door latch. The control method of the environmental testing device applies the above-described environmental testing device. When closing the pressure relief cover, only the second adsorption end needs to be energized to close the cover, avoiding forgetting to close it.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to an environmental testing apparatus and control method. Background Technology

[0002] Environmental testing involves exposing a product to specific environmental conditions to assess its performance. Environmental testing is typically conducted within environmental testing facilities to evaluate product performance under specific environmental conditions and to analyze the extent and mechanism of environmental factors' influence on product performance.

[0003] With the advancement of technology, new energy batteries are widely used in the automotive industry. However, environmental testing equipment may explode when testing potentially explosive samples such as batteries. The resulting abnormally high instantaneous pressure can impact the testing equipment, causing excessive internal pressure and potentially damaging it, or even injuring personnel. To address this issue, environmental testing equipment is equipped with pressure relief vents and pressure relief caps. When the pressure becomes too high, the pressure relief caps are forced open, releasing the pressure and protecting both the equipment and personnel.

[0004] However, in existing technologies, the pressure relief cover does not automatically close after pressure relief is completed, requiring manual closing by the test personnel. On one hand, when the pressure relief cover is located at the top of the environmental testing apparatus, its position is difficult to reach, making it difficult to close. On the other hand, test personnel often forget to close the pressure relief cover, especially when the pressure relief is small, and the cover is already open, partially ajar at the pressure relief port. This often results in the pressure relief cover not being closed in the next test, thus affecting the test results.

[0005] Therefore, there is an urgent need for an environmental testing device and control method to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide an environmental testing device that improves the convenience of closing the pressure relief cap and avoids forgetting to close it, thereby preventing any impact on the test results.

[0007] Another objective of this invention is to provide a control method for an environmental testing device. By applying the above-mentioned environmental testing device, the convenience of closing the pressure relief cover can be improved, and the accuracy of environmental test results can be increased.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] Environmental testing equipment, including:

[0010] The enclosure is equipped with a pressure relief port and is used for environmental testing.

[0011] A pressure relief cover is provided on the pressure relief port and is hinged to the housing;

[0012] A door latch, one end of which is connected to the housing and the other end of which is connected to the pressure relief cover, is used to lock the pressure relief cover to the housing. The door latch can be opened or locked under external force.

[0013] An electromagnetic lock includes a first adsorption end and a second adsorption end, the first adsorption end and the second adsorption end are arranged opposite to each other, one of the first adsorption end and the second adsorption end is located on the pressure relief cover, and the other is located on the housing. When the second adsorption end is energized, it can adsorb the first adsorption end to provide an external force to lock the door latch.

[0014] The controller is electrically connected to the second adsorption end;

[0015] A sensor is electrically connected to the controller and is located on one of the pressure relief cover and the housing. The sensor is used to detect whether the door latch is locked.

[0016] Preferably, the environmental testing device further includes a connecting chain, which is located at the open end of the pressure relief cover, with one end connected to the pressure relief cover and the other end connected to the housing.

[0017] Preferably, the pressure relief cover is provided with a first connecting seat, which is connected to the connecting chain; and / or

[0018] The housing is provided with a second connecting seat, which is connected to the connecting chain.

[0019] Preferably, a reinforcing member is provided at the connection between the first connecting seat and the pressure relief cover; and / or

[0020] A reinforcing member is provided at the connection between the second connecting seat and the housing.

[0021] Preferably, the pressure relief cover is provided with heat insulation cotton.

[0022] Preferably, the pressure relief cover is provided with a sealing strip so that the pressure relief port can be sealed and covered by the pressure relief cover.

[0023] Preferably, the pressure relief cover includes an outer shell and an inner plate.

[0024] Preferably, the outer shell includes a plurality of first flanges and a plurality of second flanges, wherein the first flanges are arranged perpendicularly to the inner panel, the second flanges are arranged parallel to the inner panel, and the inner panel is disposed on the second flanges.

[0025] An environmental testing apparatus control method, using any of the environmental testing apparatuses described above, includes the following steps:

[0026] The controller detects whether the environmental testing device has started the environmental test. If the environmental testing device has started the environmental test, the controller controls the sensor to detect whether the door latch is locked. If the door latch is not locked, the controller controls the second adsorption end of the electromagnetic lock to be energized to lock the door latch.

[0027] After the second adsorption end of the electromagnetic lock is energized for a preset time, the controller controls the sensor to detect whether the door lock is locked. If the door lock is not locked, the controller starts to sound an alarm. If the door lock is locked, the controller controls the second adsorption end of the electromagnetic lock to be de-energized.

[0028] Preferably, the door latch is determined to be locked by detecting whether the distance between the pressure relief cover and the housing is within a preset range.

[0029] The beneficial effects of this invention are as follows:

[0030] This invention provides an environmental testing device for conducting environmental tests within a chamber. A pressure relief cover is mounted on the chamber for pressure relief. Since the pressure relief cover is hinged to the chamber, and the second adsorption end, when energized, can attract the first adsorption end to provide the external force for locking the door latch, closing the pressure relief cover simply requires energizing the second adsorption end. The magnetic attraction between the second and first adsorption ends closes the cover and locks the door latch, ensuring the pressure relief cover is in a closed and locked state. This improves the convenience of closing the pressure relief cover and prevents forgetting to close it, thus avoiding any impact on the test results.

[0031] The present invention also provides a control method for an environmental testing device. By applying the above-mentioned environmental testing device, the convenience of closing the pressure relief cover can be improved, and the situation of forgetting to close the pressure relief cover can be avoided, thereby avoiding affecting the test results and improving the accuracy of the environmental test results. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the environmental testing device provided in a specific embodiment of the present invention at one angle;

[0033] Figure 2 This is a schematic diagram of the environmental testing device provided in a specific embodiment of the present invention from another angle;

[0034] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0035] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0036] Figure 5 yes Figure 3 Explosion diagram of each component;

[0037] Figure 6 This is a schematic diagram of the explosion of the pressure relief cover.

[0038] In the picture:

[0039] 1. Housing; 11. Pressure relief port; 12. Second connecting seat;

[0040] 2. Pressure relief cover; 21. First connecting seat; 211. First fastener; 22. Insulation cotton; 23. Sealing strip; 24. Outer shell; 241. First flange; 242. Second flange; 25. Inner plate;

[0041] 3. Door latch;

[0042] 4. First adsorption end;

[0043] 5. Second adsorption end;

[0044] 6. Connect the chain;

[0045] 7. Reinforcing components;

[0046] 8. Controller;

[0047] 9. Sensors;

[0048] 10. Hinge. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention and not the entire structure.

[0050] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0053] This embodiment provides an environmental testing apparatus, which can be used in the field of testing equipment technology.

[0054] like Figures 1-4 As shown, the environmental testing apparatus includes a housing 1, a pressure relief cover 2, a door latch 3, an electromagnetic lock, a controller 8, and a sensor 9. The electromagnetic lock includes a first adsorption end 4 and a second adsorption end 5. The housing 1 has a pressure relief port 11 and is used for environmental testing. The pressure relief cover 2 is placed over the pressure relief port 11 and is hinged to the housing 1. One end of the door latch 3 is connected to the housing 1, and the other end is connected to the pressure relief cover 2. The door latch 3 is used to lock the pressure relief cover 2 to the housing 1 and can be opened or locked under external force. The first adsorption end 4 and the second adsorption end 5 are arranged opposite each other. One of the first adsorption end 4 and the second adsorption end 5 is located on the pressure relief cover 2, and the other is located on the housing 1. When the second adsorption end 5 is energized, it can adsorb the first adsorption end 4 to provide the external force to lock the door latch 3. The second adsorption end 5 is electrically connected to the controller 8. The sensor 9 is electrically connected to the controller 8. The sensor 9 is located on one of the pressure relief cover 2 and the housing 1. The sensor 9 is used to detect whether the door latch 3 is locked.

[0055] Environmental tests can be conducted inside the chamber 1 of the environmental testing device, and the pressure relief cover 2 can release pressure inside the chamber 1. When closing the pressure relief cover 2, simply energize the second adsorption end 5, and the door latch 3 will be locked by the magnetic attraction between the second adsorption end 5 and the first adsorption end 4 (designed to be greater than the external force required for the door latch 3 to lock), thus keeping the pressure relief cover 2 in a closed and locked state. This improves the convenience of closing the pressure relief cover 2 and avoids forgetting to close it, thereby preventing any impact on the test results.

[0056] The second adsorption end 5 is electrically connected to the controller 8, which can control the second adsorption end 5 to be energized or de-energized. The controller 8 can control the second adsorption end 5 to be energized at the start of the environmental test, thereby closing the pressure relief cover 2 and locking the door latch 3, preventing the pressure relief cover 2 from being forgotten to be closed, thus avoiding affecting the test results. The controller 8 can control the second adsorption end 5 to be de-energized when the pressure relief cover 2 is in the closed and locked state, so that the pressure relief cover 2 is locked only by the door latch 3. This allows the pressure relief cover 2 to be opened by pressure when the pressure inside the chamber 1 exceeds the mechanical locking force of the door latch 3, thereby relieving pressure inside the chamber 1. It is worth noting that the controller 8 is a mature component in existing technology, and its specific principle will not be elaborated here.

[0057] Specifically, such as Figure 1 , Figure 3 As shown, one end of the door latch 3 is connected to the housing 1, and the other end is connected to the pressure relief cover 2. Locking the door latch 3 indicates that the pressure relief cover 2 is fully closed; opening the door latch 3 indicates that the pressure relief cover 2 is open. The door latch 3 can be opened or locked under external force. Specifically, the magnetic attraction between the second adsorption end 5 and the first adsorption end 4 attracts the pressure relief cover 2 to close the housing 1, thus locking the door latch 3. When the second adsorption end 5 is de-energized, if the pressure inside the housing 1 exceeds the mechanical locking force of the door latch 3, the pressure inside the housing 1 will push open the pressure relief cover 2, causing the door latch 3 to open and thus releasing pressure inside the housing 1. It is worth noting that the door latch 3 is a mature component in existing technology, and its specific structure and principle will not be elaborated here.

[0058] It is worth noting that when the pressure relief cover 2 is installed on the top of the housing 1, there is no need to pay attention to the opening direction of the pressure relief cover 2. When the pressure relief cover 2 is installed on the side wall of the housing 1, the opening direction of the pressure relief cover 2 should be downward so that the pressure relief cover 2 can close under the action of gravity.

[0059] Preferably, the number of electromagnetic locks is set to two, and the two electromagnetic locks are respectively located on both sides of the door latch 3, so that the pressure relief cover 2 is subjected to uniform force after the electromagnetic lock is energized, thereby enabling the pressure relief cover 2 to be closed smoothly.

[0060] Preferably, such as Figure 2 , Figure 4 As shown, the pressure relief cover 2 is hinged to the housing 1 via a hinge 10. The hinge 10 provides stable hinge performance, ensuring stable opening and closing of the pressure relief cover 2. The hinge 10 is easy to replace; if it is damaged due to excessive pressure inside the housing 1, it can be directly replaced, improving the ease of maintenance of the environmental testing device. In other embodiments, the pressure relief cover 2 and the housing 1 can also be hinged together using other methods such as hinges, depending on the requirements, and are not limited here.

[0061] Preferably, such as Figure 1 , Figure 3 As shown, the environmental testing apparatus also includes a connecting chain 6. The strength of the connecting chain 6 is greater than that of the hinge 10. The connecting chain 6 is located at the open end of the pressure relief cover 2, with one end connected to the pressure relief cover 2 and the other end connected to the housing 1. The connecting chain 6 has significant functions, mainly including the following: First, by changing the length of the connecting chain 6, the maximum opening angle of the pressure relief cover 2 can be made to be an acute angle, thereby ensuring that the pressure relief cover 2 can return to the closed state by gravity after the pressure is released. Second, when excessive pressure is generated instantaneously inside the housing 1, causing the hinge 10 to be damaged, the connecting chain 6 can pull the pressure relief cover 2, preventing the pressure relief cover 2 from being blown away by the pressure inside the housing 1, thereby preventing the pressure relief cover 2 from injuring the test personnel or damaging the test items.

[0062] Preferably, such as Figure 3 As shown, the pressure relief cover 2 is provided with a first connecting seat 21, and the housing 1 is provided with a second connecting seat 12. One end of the connecting chain 6 is connected to the first connecting seat 21, and the other end is connected to the second connecting seat 12, making the connection between the connecting chain 6 and the pressure relief cover 2 and the housing 1 more secure. At the same time, it is also convenient to install or remove the connecting chain 6 when it is damaged.

[0063] Preferably, such as Figure 3 As shown, a connecting ring is provided on the first connecting seat 21, and the connecting chain 6 is connected to the first connecting seat 21 through the connecting ring. Similarly, a connecting ring is also provided on the second connecting seat 12, and the connecting chain 6 is connected to the second connecting seat 12 through the connecting ring. By providing connecting rings, the installation and disassembly of the connecting chain 6 are made more convenient, thereby improving the ease of disassembly, assembly, and maintenance of the environmental testing device.

[0064] Preferably, such as Figure 5 As shown, a reinforcing member 7 is provided at the connection between the first connecting seat 21 and the pressure relief cover 2. The reinforcing member 7 makes the connection between the first connecting seat 21 and the pressure relief cover 2 more reliable. In other embodiments, a reinforcing member 7 can also be provided at the connection between the second connecting seat 12 and the housing 1 to make the connection between the second connecting seat 12 and the housing 1 more reliable. The reinforcement member 7 can be flexibly provided as needed and is not limited here.

[0065] Specifically, the reinforcing member 7 is welded inside the pressure relief cover 2, and the first connecting seat 21 is disposed outside the pressure relief cover 2. The first fastener 211 passes through the first connecting seat 21, the pressure relief cover 2 and the reinforcing member 7 in sequence, so that the first connecting seat 21, the pressure relief cover 2 and the reinforcing member 7 are tightly connected, thereby further improving the reliability of the connection between the first connecting seat 21 and the pressure relief cover 2.

[0066] In other embodiments, a reinforcing member 7 can be welded inside the housing 1, and a second connecting seat 12 can be disposed outside the housing 1. The second connecting seat 12, the housing 1 and the reinforcing member 7 are sequentially passed through by a first fastener 211, so that the second connecting seat 12, the housing 1 and the reinforcing member 7 are tightly connected, thereby further improving the reliability of the connection between the second connecting seat 12 and the housing 1.

[0067] In other embodiments, the reinforcing member 7 can also be installed inside the pressure relief cover 2 / box 1 without welding. The first connecting seat 21 / second connecting seat 12, the pressure relief cover 2, and the reinforcing member 7 can be installed inside the pressure relief cover 2 / box 1 simply by sequentially passing the first fastener 211 through them. This can be flexibly configured as needed and is not limited here.

[0068] Preferably, the first fastener 211 is a screw, which facilitates the assembly and disassembly of the first connecting seat 21 or the second connecting seat 12. In other embodiments, the first fastener 211 can also be a rivet, pin, or other components, which can be flexibly set as needed and are not limited here.

[0069] Preferably, such as Figure 6 As shown, the pressure relief cover 2 is equipped with heat insulation cotton 22 to ensure the test temperature inside the chamber 1. This prevents heat from dissipating through the pressure relief cover 2, thus affecting the test results.

[0070] Preferably, such as Figure 5 , Figure 6 As shown, a sealing strip 23 is also provided on the pressure relief cover 2 so that the pressure relief port 11 can be sealed and covered by the pressure relief cover 2, thereby ensuring the accuracy of the test results.

[0071] Preferably, such as Figure 6 As shown, the pressure relief cover 2 includes an outer shell 24 and an inner plate 25. The insulation cotton 22 is fixed and sealed between the outer shell 24 and the inner plate 25. The sealing strip 23 is sleeved around the inner plate 25 and fixed between the outer shell 24 and the inner plate 25 to prevent the insulation cotton 22 and the sealing strip 23 from falling off during the test.

[0072] Preferably, such as Figure 6 As shown, mounting holes are provided on the outer shell 24, and mounting holes are also provided on the corresponding positions of the inner plate 25. By passing the second fastener (not shown in the figure) through the inner plate 25 and the outer shell 24 in sequence, the inner plate 25 and the outer shell 24 are fastened together, thereby improving the reliability of the connection between the inner plate 25 and the outer shell 24.

[0073] Preferably, such as Figure 6As shown, the outer casing 24 includes a plurality of first flanges 241 and a plurality of second flanges 242. The first flanges 241 are arranged perpendicularly to the inner plate 25, and the second flanges 242 are arranged parallel to the inner plate 25. The second flanges 242 are provided with a plurality of mounting holes, and the corresponding positions of the inner plate 25 are also provided with mounting holes. By sequentially passing second fasteners through the inner plate 25 and the second flanges 242, the inner plate 25 and the second flanges 242 are fastened together, thereby fastening the inner plate 25 and the outer casing 24.

[0074] Preferably, the sensing element 9 is a proximity switch, which has high positioning accuracy, strong adaptability to harsh environments, and long service life. For example... Figure 3 As shown, the sensor 9 is mounted on the housing 1. The sensor 9 is used to sense the distance between the outer shell 24 of the pressure relief cover 2 and the housing 1. The distance between the outer shell 24 and the housing 1 is the size of the sensor 9 plus the distance between the sensor 9 and the outer shell 24. When the sensor 9 senses that the distance between the outer shell 24 and the sensor 9 is less than a preset distance, such as 5mm, it indicates that the pressure relief cover 2 is fully closed, and the controller 8 can control the second adsorption end 5 to be de-energized.

[0075] It is worth noting that the sealing strip 23 and the inner plate 25 are both located between the outer shell 24 and the box 1. Therefore, after the pressure relief cover 2 is sealed and closed, there is still a certain distance between the outer shell 24 and the box 1. The sensing element 9 can determine whether the pressure relief cover 2 is completely closed by sensing whether the distance between the outer shell 24 of the pressure relief cover 2 and the sensing element 9 is less than a preset distance, such as 5mm.

[0076] In other embodiments, the sensing element 9 can also be a contact sensor. When the pressure relief cover 2 contacts the sensing element 9, it indicates that the pressure relief cover 2 is completely closed. It can be flexibly set as needed and is not limited here.

[0077] This embodiment also provides a control method for an environmental testing device, which utilizes the aforementioned environmental testing device. The control method for the environmental testing device mainly includes the following steps:

[0078] The controller 8 detects whether the environmental testing device has started the environmental test. If the environmental testing device has started the environmental test, the controller 8 controls the sensor 9 to detect whether the door latch 3 is locked. If the door latch 3 is not locked, the controller 8 controls the second adsorption end 5 of the electromagnetic lock to be energized to lock the door latch 3.

[0079] After the second adsorption end 5 of the electromagnetic lock is energized for a preset time, the controller 8 controls the sensor 9 to detect whether the door latch 3 is locked. If the door latch 3 is not locked, the controller 8 will start an alarm so that the test personnel can check and eliminate any abnormalities in the environmental test equipment. If the door latch 3 is locked, the controller 8 will de-energize the second adsorption end 5 of the electromagnetic lock. The preset time is the time from the start of energization until the pressure relief cover 2 is fully closed and then until the door latch 3 is locked. It is set according to the actual situation and is generally within a few seconds.

[0080] The controller 8 detects whether the environmental test has been started inside the chamber 1, thereby controlling whether the second adsorption end 5 of the electromagnetic lock is energized. This can prevent the situation where the pressure relief cover 2 is forgotten to be closed after the environmental test is started, thus avoiding affecting the test results.

[0081] After the second adsorption end 5 of the electromagnetic lock is energized for a preset time, the door latch 3 is checked to see if it is locked. If the door latch 3 is not locked, the controller 8 will start an alarm so that the test personnel can deal with the abnormality of the environmental test device and avoid the situation where the door latch 3 is not locked, thereby avoiding affecting the test results.

[0082] Preferably, the second adsorption end 5 of the electromagnetic lock is initially de-energized. Only when the sensing element 9 detects that the door latch 3 is not locked will the controller 8 control the second adsorption end 5 of the electromagnetic lock to be energized to lock the door latch 3.

[0083] When a large amount of pressure is released from the battery during the test, the pressure relief cover 2 will pop open with a large opening. At this time, due to the presence of the connecting chain 6 and the limitation of the length of the connecting chain 6, the opening angle of the pressure relief cover 2 will not exceed 90 degrees, so that the pressure relief cover 2 can completely lock the door latch 3 under its own weight.

[0084] When a small amount of pressure is released during the test due to a minor battery leak, the opening of the pressure relief cover 2 is small, preventing it from fully locking the door latch 3 under its own weight. Alternatively, if the maintenance personnel close the pressure relief cover 2 after the environmental testing equipment is repaired, they may not ensure that the door latch 3 is fully locked, resulting in the pressure relief cover 2 not being closed during the next test and affecting the test results. To address this issue, when the environmental testing equipment is activated again during the next environmental test, the controller 8 will control the sensor 9 to check whether the pressure relief cover 2 is fully locked. Based on whether the pressure relief cover 2 is fully locked, the controller will determine whether to activate the electromagnetic lock.

[0085] Furthermore, the initial state of the second adsorption end 5 of the electromagnetic lock is de-energized. When the controller 8 detects the start of the environmental testing device, if the sensing element 9 senses that the pressure relief cover 2 is not fully locked, the sensing signal is transmitted to the controller 8, and the controller 8 will control the second adsorption end 5 of the electromagnetic lock to be energized. Under the mutual attraction of the first adsorption end 4 and the second adsorption end 5 of the electromagnetic lock, the door latch 3 of the pressure relief cover 2 is locked. After the second adsorption end 5 of the electromagnetic lock is energized for a preset time, the controller 8 will control the sensing element 9 to sense whether the pressure relief cover 2 is fully locked. If the pressure relief cover 2 is fully locked, the controller 8 will control the second adsorption end 5 of the electromagnetic lock to be de-energized, so that the pressure relief cover 2 is locked only by the door latch 3. When the pressure inside the chamber 1 is greater than the mechanical locking force of the door latch 3, the pressure relief cover 2 can be opened by pressure, thereby relieving the pressure inside the chamber 1.

[0086] Preferably, the environmental testing device control method determines whether the door latch 3 is locked by detecting whether the distance between the pressure relief cover 2 and the chamber 1 is within a preset range.

[0087] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, based on the concept of the present invention, there will be changes in specific implementation methods and application scope. The content of this specification should not be construed as a limitation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. An environmental testing device, characterized by, The environmental test device comprises: a box (1) provided with a pressure relief port (11), the box (1) being used for environmental test; a pressure relief cover (2) covering the pressure relief port (11), the pressure relief cover (2) being hingedly connected with the box (1); a door latch (3) having one end connected with the box (1) and the other end connected with the pressure relief cover (2), the door latch (3) being used for locking the pressure relief cover (2) and the box (1), the door latch (3) being able to be opened or locked under external force; an electromagnetic lock comprising a first adsorption end (4) and a second adsorption end (5), the first adsorption end (4) being oppositely arranged with the second adsorption end (5), one of the first adsorption end (4) and the second adsorption end (5) being arranged on the pressure relief cover (2) and the other being arranged on the box (1), the second adsorption end (5) being able to adsorb the first adsorption end (4) when powered to provide external force for locking the door latch (3); a controller (8) electrically connected with the second adsorption end (5); an inductor (9) electrically connected with the controller (8), the inductor (9) being arranged on one of the pressure relief cover (2) and the box (1), the inductor (9) being used for detecting whether the door latch (3) is locked.

2. The environmental test device of claim 1, wherein, The environmental test device further comprises a connecting chain (6) arranged at an opening end of the pressure relief cover (2), one end of the connecting chain (6) being connected with the pressure relief cover (2) and the other end being connected with the box (1).

3. The environmental test device of claim 2, wherein, The pressure relief cover (2) is provided with a first connecting seat (21), the first connecting seat (21) being connected with the connecting chain (6); and / or The box (1) is provided with a second connecting seat (12), the second connecting seat (12) being connected with the connecting chain (6).

4. The environmental test device of claim 3, wherein The first connecting seat (21) is provided with a reinforcing member (7) at the connection with the pressure relief cover (2); and / or The second connecting seat (12) is provided with a reinforcing member (7) at the connection with the box (1).

5. Environmental test device according to any of claims 1 to 4, characterized in that The pressure relief cover (2) is provided with thermal insulation cotton (22).

6. Environmental test device according to any of claims 1 to 4, characterized in that The pressure relief cover (2) is provided with a sealing strip (23) to enable the pressure relief port (11) to be sealed by the pressure relief cover (2).

7. Environmental test device according to any of claims 1 to 4, characterized in that The pressure relief cover (2) comprises an outer shell (24) and an inner plate (25).

8. The environmental test device of claim 7, wherein, The outer shell (24) comprises a plurality of first flanges (241) and a plurality of second flanges (242), the first flanges (241) being arranged perpendicularly to the inner plate (25), the second flanges (242) being arranged in parallel to the inner plate (25), and the inner plate (25) being arranged on the second flanges (242).

9. A method of controlling an environmental test device, characterized by, The environmental test device is applied, comprising the following steps: The controller (8) detects whether the environmental test device starts environmental test, if the environmental test device starts environmental test, the controller (8) controls the inductor (9) to detect whether the door latch (3) is locked, if the door latch (3) is not locked, the controller (8) controls the second adsorption end (5) of the electromagnetic lock to be powered on to lock the door latch (3); The second adsorption end (5) of the electromagnetic lock is powered on to the preset time, the controller (8) controls the inductor (9) to detect whether the door latch (3) is locked, if the door latch (3) is not locked, the controller (8) starts to alarm, if the door latch (3) is locked, the controller (8) controls the second adsorption end (5) of the electromagnetic lock to be powered off.

10. The environmental test chamber control method of claim 9, wherein, Whether the distance between the pressure relief cover (2) and the box body (1) is in the preset range is detected to determine whether the door latch (3) is locked.

Images