Environmental test box

Abstract

The utility model discloses an environment test box, which comprises a box body, temperature detection parts, humidity detection parts, a temperature adjusting part, a humidity adjusting part and a control part, the box body is provided with a first air outlet and a second air outlet which can be opened and closed, and the box body is internally provided with a plurality of temperature detection parts and a plurality of humidity detection parts. The plurality of temperature detection components and the plurality of humidity detection components are respectively arranged in different areas in the box body, the temperature adjusting component and the humidity adjusting component are installed in the box body, the temperature adjusting component is used for adjusting the temperature in the box body, and the humidity adjusting component is used for adjusting the humidity in the box body. The temperature detection part, the humidity detection part, the temperature adjusting part and the humidity adjusting part are electrically connected with the control part. According to the environment test box, the temperature and humidity of each area in the box body can be basically consistent, and the uniformity of the temperature and humidity in the box body is good.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to an environmental testing box. Background Art

[0002] In the photovoltaic field, when photovoltaic modules are used outdoors, they will be affected by environmental factors such as high temperature, high humidity, hail, strong wind, desert, dry heat, and salt spray. Therefore, the performance of photovoltaic modules in withstanding environmental influences for a long time has become one of the concerns of module quality. The International Electrotechnical Commission (IEC) has issued relevant requirements and standards for photovoltaic module aging tests. In the IEC61730 series, corresponding test conditions and requirements are made for different types of photovoltaic modules, such as fire protection, electric shock protection, mechanical stress, environmental stress and other test requirements and standards.

[0003] At present, the DH1000 (1000h in a hot and humid environment chamber) test is carried out in the laboratory. The high temperature and high humidity environment accelerates the material aging of photovoltaic modules, and the performance changes are used to evaluate the temperature and humidity resistance of photovoltaic modules outdoors. Therefore, it is very important to monitor the temperature and humidity of photovoltaic modules. In the process of environmental stress testing of photovoltaic modules, the photovoltaic modules are placed in a sealed box, and water vapor is generated by heating water and blown out by a fan. Under the action of the concentration gradient, the vapor diffuses to other areas in the sealed box, liquefies and releases heat, provides humidity and temperature, and aims to achieve the requirements of temperature 85℃ and humidity 85%. A temperature and humidity monitoring probe is placed at the top corner of the sealed box to feedback the temperature and humidity data in real time. The system controls the temperature and humidity by reversely controlling the wind speed of the fan in the sealed box through the temperature and humidity data.

[0004] With the development of technology, the size of photovoltaic modules is getting bigger and bigger, and the size of sealed boxes is also gradually increasing, but the temperature and humidity control inside the sealed box remains unchanged. When the surface area of ​​the photovoltaic module is too large, it will block the blown steam, and the moisture inside the sealed box cannot circulate, resulting in low humidity near the air outlet of the photovoltaic module and high humidity away from the air outlet. The temperature and humidity displayed on the panel of the sealed box represent the situation near the location of the monitoring probe. There is only one monitoring point in the box, and the temperature and humidity in the box are controlled according to the only point, which cannot represent the overall uniformity of the sealed box. The temperature and humidity in the area where the module is directly blown by steam may be different from the area where the steam diffuses and flows. If external temperature and humidity detection equipment is used for verification, there are great limitations, and manual data recording is still required. Moreover, when the temperature and humidity in the sealed box are found to be uneven, it is impossible to timely control the temperature and humidity of the local position in the box. Utility Model Content

[0005] Based on this, it is necessary to provide an environmental test box. The environmental test box of the utility model can achieve basically consistent temperature and humidity in various areas of the box, thereby improving the uniformity of temperature and humidity in various areas inside the box.

[0006] An embodiment of the present application provides an environmental test chamber.

[0007] An environmental testing box comprises a box body, a temperature detecting component, a humidity detecting component, a temperature regulating component, a humidity regulating component and a control component, wherein the box body is provided with a first air outlet and a second air outlet which can be opened and closed, a plurality of the temperature detecting components and a plurality of the humidity detecting components are provided in the box body, the plurality of the temperature detecting components and the plurality of the humidity detecting components are respectively arranged in different areas in the box body, the temperature regulating component is used for regulating the temperature in the box body, the humidity regulating component is used for regulating the humidity in the box body, and the temperature detecting component, the humidity detecting component, the temperature regulating component and the humidity regulating component are respectively electrically connected to the control component.

[0008] In some embodiments, at least two of the temperature detection components are disposed in the bottom area of ​​the box body, at least two of the temperature detection components are disposed in the middle area of ​​the box body, and at least two of the temperature detection components are disposed in the top area of ​​the box body.

[0009] In some embodiments, at least two humidity detection components are disposed in the bottom area of ​​the box body, at least two humidity detection components are disposed in the middle area of ​​the box body, and at least two humidity detection components are disposed in the top area of ​​the box body.

[0010] In some embodiments, the first air outlet and the second air outlet are arranged on the top wall or the bottom wall of the box at relative positions on the box.

[0011] In some embodiments, the air outlet direction of the first air outlet is at an angle of 10° to 15° to the horizontal plane;

[0012] And / or, the air outlet direction of the second air outlet is at an angle of 45° to 90° to the horizontal plane;

[0013] And / or, arc-shaped blades are arranged in the second air outlet.

[0014] In some of the embodiments, the box body is further provided with a return air outlet, and the return air outlet is located at the bottom of the box body.

[0015] In some of the embodiments, a third air outlet and a fourth air outlet are further provided on the box body, and the third air outlet and the fourth air outlet are arranged on the side wall of the box body opposite to each other.

[0016] In some embodiments, the air outlet direction of the third air outlet is at an angle of 10° to 45° to the vertical plane;

[0017] And / or, the air outlet direction of the fourth air outlet is at an angle of 10° to 45° with the vertical plane.

[0018] In some embodiments, the environmental testing chamber also includes a steam device, which includes a fan, a steam input pipe and a heating component, one end of the steam input pipe is connected to at least one of the first air outlet, the second air outlet, the third air outlet and the fourth air outlet, the other end of the steam input pipe is connected to an external steam source, the fan is arranged on the steam input pipe, the first air outlet, the second air outlet, the third air outlet and the fourth air outlet are respectively provided with the heating components, and the fan and the heating component are respectively electrically connected to the control component.

[0019] In some embodiments, the heating component is a heating rod or a heating resistance wire.

[0020] The environmental test box of the utility model can achieve that the temperature and humidity of each area in the box are basically consistent, and the temperature and humidity of each area inside the box have good uniformity.

[0021] In the present application, multiple temperature detection components and multiple humidity detection components are respectively arranged in different areas of the box body, so that the temperature and humidity of different areas in the box body can be detected respectively. When the temperature value detected by the temperature detection component of a certain area and the humidity value detected by the humidity detection component of a certain area deviate from the set upper and lower limits, the control component adjusts the air intake volume, wind speed or temperature of the first air outlet, the second air outlet, the third air outlet and the fourth air outlet to adjust the temperature and humidity of the area, so as to achieve uniform temperature and humidity in local areas and the overall area. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0023] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0024] Figure 1This is a schematic diagram of an environmental test box according to an embodiment of the present utility model;

[0025] Figure 2 Schematic diagram of an environmental test box according to an embodiment of the present invention; Figure 1 , 2 The curved arrow in the figure indicates part of the air flow.

[0026] Description of Reference Numerals

[0027] 10. Environmental test chamber; 100. Chamber body; 101. First air outlet; 102. Second air outlet; 103. Third air outlet; 104. Fourth air outlet; 105. Return air outlet; 20. Photovoltaic module. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] The embodiment of the present application provides an environmental test box to solve at least one of the following problems existing in the existing sealed box when performing temperature and humidity tests on photovoltaic modules in the traditional technology: (1) the problem that the local temperature and humidity are abnormal and the steam at the test point is blocked by the module, resulting in abnormal temperature and humidity in the box, which cannot meet the requirements of the existing test; (2) the temperature and humidity of the photovoltaic module in the sealed box are different between the area where the steam is directly blown and the area where the steam diffuses and flows, resulting in abnormal test results. The environmental test box will be described below in conjunction with the accompanying drawings.

[0035] The environmental test box 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 The environmental test box 10 of the present application is a schematic diagram of the structure of the environmental test box 10 provided in the embodiment of the present application. The environmental test box 10 of the present application can be used for the purpose of simulating environmental testing of photovoltaic modules 20. The environmental test box 10 of the present application can achieve basically consistent test results for photovoltaic modules 20 of the same batch and the same material in different areas of the sealed box 100, and the darkening degree of the EL graphics at different positions of the same photovoltaic module 20 is basically consistent.

[0036] In order to more clearly illustrate the structure of the environmental test box 10, the environmental test box 10 will be introduced below with reference to the accompanying drawings. Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of the environmental test box 10 provided in an embodiment of the present application.

[0037] An environmental test box 10 includes a box body 100, a temperature detection component, a humidity detection component, a temperature adjustment component, a humidity adjustment component and a control component. The box body 100 is provided with a first air outlet 101 and a second air outlet 102 that can be opened and closed. A plurality of temperature detection components and a plurality of humidity detection components are provided in the box body 100. The plurality of temperature detection components and the plurality of humidity detection components are respectively arranged in different areas in the box body 100. The temperature adjustment component and the humidity adjustment component are installed in the box body 100. The temperature adjustment component is used to adjust the temperature in the box body 100. The humidity adjustment component is used to adjust the humidity in the box body 100. The temperature detection component, the humidity detection component, the temperature adjustment component and the humidity adjustment component are electrically connected to the control component respectively. The temperature detection component, the humidity detection component, the temperature adjustment component, the humidity adjustment component and the control component are not shown in the accompanying drawings.

[0038] In some embodiments, at least two temperature detection components are provided in the bottom area of ​​the box 100, at least two temperature detection components are provided in the middle area of ​​the box 100, and at least two temperature detection components are provided in the top area of ​​the box 100. The present application realizes temperature detection of different positions in the box 100 by respectively providing temperature detection components in the bottom area, the middle area and the top area of ​​the box 100. Preferably, the multiple temperature detection components in the bottom area of ​​the box 100 can be arranged at relative inner corner positions in the box or one of the positions is in the middle position and the other is at the edge position. The multiple temperature detection components in the middle area of ​​the box 100 can be arranged at relative inner corner positions in the box or one of the positions is in the middle position and the other is at the edge position. The multiple temperature detection components in the top area of ​​the box 100 can be arranged at relative inner corner positions in the box or one of the positions is in the middle position and the other is at the edge position. It should be noted that the top area, the middle area and the bottom area in this article refer to the positions in the height direction of the box 100. The inner corner position and the edge position refer to a horizontal position of the box 100.

[0039] In some embodiments, at least two humidity detection components are provided in the bottom area of ​​the box 100, at least two humidity detection components are provided in the middle area of ​​the box 100, and at least two humidity detection components are provided in the top area of ​​the box 100. The present application realizes humidity detection at different positions in the box 100 by respectively providing humidity detection components in the bottom area, the middle area and the top area of ​​the box 100. Preferably, the multiple humidity detection components in the bottom area of ​​the box 100 can be arranged at relative inner corner positions in the box or one of the positions is in the middle position and the other is at the edge position. The multiple humidity detection components in the middle area of ​​the box 100 can be arranged at relative inner corner positions in the box or one of the positions is in the middle position and the other is at the edge position. The multiple humidity detection components in the top area of ​​the box 100 can be arranged at relative inner corner positions in the box or one of the positions is in the middle position and the other is at the edge position.

[0040] In some of these embodiments, see Figure 1 As shown, the first air outlet 101 and the second air outlet 102 are arranged at relative positions on the box body 100, and the first air outlet 101 and the second air outlet 102 are relatively arranged on the top wall or the bottom wall of the box body 100. The first air outlet 101 and the second air outlet 102 are relatively arranged on the top wall or the bottom wall of the box body 100 means that the first air outlet 101 and the second air outlet 102 can be relatively arranged on the top wall of the box body 100, the first air outlet 101 and the second air outlet 102 can be relatively arranged on the bottom wall of the box body 100, or the first air outlet 101 and the second air outlet 102 are respectively arranged on the top wall and the bottom wall of the box body 100.

[0041] In some embodiments, the air outlet direction of the first air outlet 101 is at an angle of 10° to 15° with the horizontal plane.

[0042] In some embodiments, the air outlet direction of the second air outlet 102 is at an angle of 45° to 90° to the horizontal plane. The second air outlet 102 is provided with an arc-shaped blade, which can be used to adjust the air outlet direction. The first air outlet 101 and the second air outlet 102 are arranged at relative positions on the box body 100, so that the air outlet performance of the first air outlet 101 and the air outlet performance of the second air outlet 102 interfere with each other, forming a disturbance, increasing the gas flow in each area, and achieving the uniformity of temperature and humidity in each area to a great extent.

[0043] In some of the embodiments, the box body 100 is further provided with a return air port 105 , and the return air port 105 is located at the bottom of the box body 100 .

[0044] In some of these embodiments, see Figure 2 As shown, Figure 2This is a schematic diagram of an environmental test box 10 according to an embodiment of the present utility model. A third air outlet 103 and a fourth air outlet 104 are also provided on the box body 100. The third air outlet 103 and the fourth air outlet 104 are relatively arranged on the side wall of the box body 100. The third air outlet 103 and the fourth air outlet 104 are arranged at relative positions on the box body 100, so that the air outlet performance of the third air outlet 103 and the air outlet performance of the fourth air outlet 104 interfere with each other, forming a disturbance, increasing the gas flow in each area, and achieving the uniformity of temperature and humidity in each area to a great extent.

[0045] In some embodiments, the air outlet direction of the third air outlet 103 forms an angle of 10° to 45° with the vertical plane.

[0046] In some embodiments, the air outlet direction of the fourth air outlet 104 forms an angle of 10° to 45° with the vertical plane.

[0047] When the length and width of the photovoltaic module 20 are too large, after the photovoltaic module 20 is set in the box 100, the inner wall of the box 100 may be close to the edge of the photovoltaic module 20, thereby hindering the steam circulation. For this reason, after the application is optimized into multiple air inlet positions, the third air outlet 103 and the fourth air outlet 104 are also arranged in the vertical direction of the box 100 at relative positions. The air outlets of the third air outlet 103 and the fourth air outlet 104 flow in the horizontal direction, and the air blowing of the first air outlet 101 and the second air outlet 102 flows in the vertical direction, so that the steam in the box 100 passes through different wind directions and wind speeds, forming a circulation and flow in the box, thereby solving the problem of hot steam rising and cold steam sinking and gathering. The application can perform a two-way (horizontal and vertical) flow circulation of steam, and when the size of the photovoltaic module 20 is too large, it still does not affect the uniformity of temperature and humidity in the box 100.

[0048] It should be noted that, in the present application, when it comes to numerical intervals (i.e., numerical ranges), unless otherwise specified, the distribution of optional numerical values ​​within the numerical interval is deemed to be continuous, and includes the two numerical endpoints (i.e., the minimum value and the maximum value) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to integers within the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be merged. In other words, unless otherwise specified, the numerical ranges disclosed in the present application should be understood to include any and all sub-ranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. "Numerical interval" allows for broadly including quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0049] In some embodiments, the environmental test chamber 10 further includes a steam device. The steam device includes a fan, a steam input pipe, and a heating component. One end of the steam input pipe is connected to at least one of the first air outlet 101, the second air outlet 102, the third air outlet 103, and the fourth air outlet 104. The other end of the steam input pipe is connected to an external steam source. The fan is arranged on the steam input pipe, and the first air outlet 101, the second air outlet 102, the third air outlet 103, and the fourth air outlet 104 are respectively provided with heating components, and the fan and the heating components are respectively electrically connected to the control component.

[0050] In some embodiments, preferably, one end of the steam input pipe is connected to one of the first air outlet 101, the second air outlet 102, the third air outlet 103 and the fourth air outlet 104. For example, the first air outlet 101 is connected to the steam input pipe, and the first air outlet 101 is used to input steam, and the other three are only used to input hot air. The present application optimizes the number of air outlets and the air outlet logic in the box 100, with only one air outlet blowing out steam and the other three air outlets blowing out hot air, which solves the problem of excessive local humidity caused by local steam accumulation inside a conventional environmental box.

[0051] In some embodiments, the heating component is a heating rod or a heating resistor. In the present application, three of the first air outlet 101, the second air outlet 102, the third air outlet 103 and the fourth air outlet 104 do not transmit wet steam, the humidity in the box 100 is regulated by the wind speed on the first air outlet 101 connected to the steam input pipeline, and the temperature is regulated by the control component controlling the heating rod or the heating resistor. When the temperature of a certain area in the box 100 is too high and the humidity is normal, the control component can be used to control and lower the temperature of the heating component in the air outlet closest to the area, thereby achieving separate regulation of temperature and humidity.

[0052] In some embodiments, the control component is a PLC programmable logic controller. The present application can automatically record the temperature and humidity curves of a local area in the box 100 by setting the control component, without the need for manual data recording, thereby reducing labor costs.

[0053] In some embodiments, a display component is also connected to the box 100, and the display component is electrically connected to the control component. Preferably, the display component is a touch screen, and the display component can perform human-computer interaction.

[0054] In the present application, multiple temperature detection components and multiple humidity detection components are respectively arranged in different areas of the box body 100, so that the temperature and humidity of different areas of the box body 100 can be detected. When the temperature value detected by the temperature detection component of a certain area and the humidity value detected by the humidity detection component of a certain area deviate from the set upper and lower limits, the control component adjusts the air intake volume, wind speed or temperature of the first air outlet 101, the second air outlet 102, the third air outlet 103, and the fourth air outlet 104 to adjust the temperature and humidity of the area, so as to achieve local and overall temperature and humidity uniformity, and realize that the temperature and humidity of the photovoltaic module in the box body 100 where the steam is directly blown are basically consistent with the temperature and humidity of the area where the steam diffuses and flows, and there is basically no difference, and the test result is accurate.

[0055] In summary, the environmental test box 10 of the utility model can achieve basically consistent temperature and humidity in each area of ​​the box 100, and the temperature and humidity uniformity of each area inside the box 100 is good. The present application divides the space inside the box 100 into different areas, and temperature detection components and humidity detection components are respectively arranged in different areas. The temperature and humidity of each area can be monitored, and the feedback is fed back to the control component so that the control component can perform local regulation. The detection and control system composed of the control component, the temperature detection component, and the humidity detection component is combined to make it more convenient to adjust the uniformity inside the box 100. Specifically, when the temperature and humidity of a local area are regulated, the control component controls and adjusts the air intake volume, wind speed or temperature of one or more of the first air outlet 101, the second air outlet 102, the third air outlet 103, and the fourth air outlet 104 to achieve temperature and humidity regulation of the local area. In addition, since the air outlet direction of the first air outlet 101 has a specific angle with the horizontal plane, the air outlet direction of the second air outlet 102 has a specific angle with the horizontal plane, the air outlet direction of the third air outlet 103 has a specific angle with the vertical plane, and the air outlet direction of the fourth air outlet 104 has a specific angle with the vertical plane, the air outlet of the first air outlet 101, the second air outlet 102, the third air outlet 103, and the fourth air outlet 104 can be controlled to form airflow disturbance in the box, realize the circulation of airflow in different areas of the box, and achieve the purpose of uniformity of temperature, humidity, etc. in each area.

[0056] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0058] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An environmental test chamber (10), characterized in that: The invention comprises a housing (100), a temperature detection component, a humidity detection component, a temperature adjustment component, a humidity adjustment component and a control component, wherein the housing (100) is provided with a first air outlet (101) and a second air outlet (102) which can be opened and closed, a plurality of the temperature detection components and a plurality of the humidity detection components are arranged in the housing (100), and the plurality of the temperature detection components and the plurality of the humidity detection components are respectively arranged in different areas in the housing (100), the temperature adjustment component is used to adjust the temperature in the housing (100), and the humidity adjustment component is used to adjust the humidity in the housing (100), and the temperature detection component, the humidity detection component, the temperature adjustment component and the humidity adjustment component are respectively electrically connected to the control component.

2. The environmental test chamber (10) according to claim 1, characterized in that: At least two of the temperature detection components are arranged in the bottom area of ​​the box body (100), at least two of the temperature detection components are arranged in the middle area of ​​the box body (100), and at least two of the temperature detection components are arranged in the top area of ​​the box body (100).

3. The environmental test chamber (10) according to claim 1, characterized in that: At least two humidity detection components are arranged in the bottom area of ​​the box body (100), at least two humidity detection components are arranged in the middle area of ​​the box body (100), and at least two humidity detection components are arranged in the top area of ​​the box body (100).

4. The environmental test chamber (10) according to claim 1, characterized in that: The first air outlet (101) and the second air outlet (102) are arranged relatively on the top wall or the bottom wall of the box body (100).

5. The environmental test chamber (10) according to claim 4, characterized in that: The air outlet direction of the first air outlet (101) is at an angle of 10° to 15° to the horizontal plane; and / or, the air outlet direction of the second air outlet (102) is at an angle of 45° to 90° to the horizontal plane; And / or, the second air outlet (102) is provided with arc-shaped blades.

6. The environmental test chamber (10) according to claim 4, characterized in that: The box body (100) is also provided with an air return port (105), and the air return port (105) is located at the bottom of the box body (100).

7. The environmental test chamber (10) according to any one of claims 1 to 6, characterized in that: The box body (100) is also provided with a third air outlet (103) and a fourth air outlet (104); the third air outlet (103) and the fourth air outlet (104) are arranged on the side wall of the box body (100) opposite to each other.

8. The environmental test chamber (10) according to claim 7, characterized in that: The air outlet direction of the third air outlet (103) is at an angle of 10° to 45° to the vertical plane; And / or, the air outlet direction of the fourth air outlet (104) is at an angle of 10° to 45° with the vertical plane.

9. The environmental test chamber (10) according to claim 7, characterized in that: The environmental test chamber (10) also includes a steam device, which includes a fan, a steam input pipe and a heating component, one end of the steam input pipe is connected to at least one of the first air outlet (101), the second air outlet (102), the third air outlet (103) and the fourth air outlet (104), and the other end of the steam input pipe is connected to an external steam source, the fan is arranged on the steam input pipe, and the first air outlet (101), the second air outlet (102), the third air outlet (103) and the fourth air outlet (104) are respectively provided with the heating components, and the fan and the heating component are respectively electrically connected to the control component.

10. The environmental test chamber (10) according to claim 9, characterized in that: The heating component is a heating rod or a heating resistance wire.

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