Test cabinet

Abstract

The utility model discloses a test cabinet, which comprises a cabinet body, and a distribution box, a communication box, a measurement and control box and a load accommodating assembly which are detachably arranged in the cabinet body, the load accommodating assembly comprises a plurality of load accommodating parts and a plurality of loads, the plurality of load accommodating parts are movably arranged in the cabinet body, the plurality of loads are detachably connected to the load accommodating parts, and the load accommodating parts are movably arranged in the cabinet body. The plurality of loads are electrically connected with the distribution box and the communication box through the measurement and control box, and the communication box is in communication connection with an external experiment piece. According to the test cabinet, the space utilization rate of each component in the test cabinet can be improved, and a load and a test system can be conveniently built in the test cabinet.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular relates to a test cabinet. Background Art

[0002] With the development of the automotive industry, the importance of simulated load testing in the production stage of automobiles has been further enhanced. In the process of simulating real load conditions, an important test equipment, load box, is needed. Load box can test and simulate the load of electrical equipment.

[0003] At present, the load box and the measurement and control box are usually integrated into one box. However, with the increase in the number of various control quantities controlled by the controller, a single integrated box can no longer meet the test requirements. Multiple integrated boxes are needed to test multiple samples. The system composed of multiple large boxes has low space utilization and is not convenient for the construction of the entire system. Utility Model Content

[0004] The present application provides a test cabinet that can improve the space utilization of internal components and facilitate the construction of loads and test systems in the test cabinet.

[0005] The present application provides a test cabinet, which includes a cabinet body and a detachable distribution box, a communication box, a measurement and control box and a load holding component arranged inside the cabinet body. The load holding component includes multiple load holding parts and multiple loads. The multiple load holding parts are movably arranged inside the cabinet body, and the multiple loads are detachably connected to the load holding parts. The multiple loads are electrically connected to the distribution box and the communication box through the measurement and control box, and the communication box is communicatively connected to the external experimental piece.

[0006] As in the test cabinet above, the load accommodating portion includes a mounting portion and a wire outlet portion in a plate-like structure, the mounting portion and the wire outlet portion are connected at a preset angle, a plurality of loads are detachably connected to the mounting portion, the wire outlet portion has a plurality of wire outlet holes, and the connecting wires of the loads pass through the plurality of wire outlet holes.

[0007] As in the test cabinet as above, there are multiple pairs of guide rails corresponding to the multiple load-holding parts on the two relatively opposite side surfaces of the cabinet body, the extension directions of the multiple pairs of guide rails are perpendicular to the height direction of the cabinet body, and each mounting part can be slidably arranged in the corresponding pair of guide rails.

[0008] As in the test cabinet above, the load holding component also includes a fixing component, the fixing component includes a connecting piece and a fixing bracket, the fixing bracket includes a fixing plate and a plurality of positioning parts connected to the fixing plate at a preset angle, the positioning parts are used to locate the installation position of the fixing plate, the fixing plate is pressed on the load surface, the connecting piece is passed through the fixing plate and fixes the fixing plate to the load holding part.

[0009] As in the test cabinet above, the fixing plate has a fixing hole set through it, the connecting piece is a bolt structure, the screw part of the connecting piece includes a threaded portion and a smooth portion, the outer circumferential surface of the smooth portion is sleeved with an elastic member, the connecting piece is connected to the load accommodating portion through the threaded portion, and the load accommodating portion and the elastic member are respectively arranged on both sides of the fixing plate.

[0010] In the test cabinet as above, the load accommodating portion includes a plurality of mounting positions, a plurality of positioning holes and a plurality of mounting holes, the mounting positions are used to mount the loads, the positioning holes are arranged in the mounting positions, and the mounting holes are arranged between two adjacent mounting positions.

[0011] As in the test cabinet above, the distribution box, communication box, measurement and control box and load accommodating assembly are sequentially arranged inside the cabinet along the height direction, multiple load accommodating parts are sequentially arranged along the height direction, and multiple mounting parts are perpendicular to the height direction and spaced apart along the height direction.

[0012] As in the test cabinet above, the distribution box includes a power supply and a plurality of connecting copper bars protruding from the power supply, the plurality of connecting copper bars are electrically connected to a plurality of loads, and the distribution box also has an input port, through which an external power line and a ground line are connected to the power supply.

[0013] As in the test cabinet above, a plurality of gateway controllers and a plurality of communication nodes are arranged inside the communication box, and a plurality of loads are connected to the external experimental pieces through the gateway controllers and the communication nodes.

[0014] As shown in the test cabinet above, a controller module is provided in the measurement and control box, and the controller module is electrically connected to multiple loads, a communication box and a distribution box. The controller module is used to control the drive quantity, analog quantity and switch quantity of the load.

[0015] The distribution box, communication box, measurement and control box and load holding assembly of the measurement and control cabinet of the present application are all independently arranged in the cabinet, and multiple load holding parts are integrated in the load holding assembly, which can be arbitrarily connected to the distribution box, communication box and measurement and control box through connecting wires, and have high space utilization, avoiding the layout of the load and the measurement and control device separately forming a set of combined measurement and control system, thereby avoiding the situation where multiple sets of combined measurement and control systems are assembled in the cabinet and occupy a large space; and multiple load holding parts can be movably arranged, so that the load can be quickly installed and replaced on the load holding part, which is convenient for setting up the load and test system in the test cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is an overall structural diagram of a test cabinet according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the fixing assembly of the test cabinet according to an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of a fixing bracket of a test cabinet according to an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of a load accommodating portion of a test cabinet according to an embodiment of the present application;

[0021] Figure 5 A top view of the installation portion of the test cabinet according to an embodiment of the present application;

[0022] Figure 6 This is a schematic structural diagram of a first side panel of a test cabinet according to an embodiment of the present application;

[0023] Figure 7 This is a schematic structural diagram of a second side panel of a test cabinet according to an embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the structure of the power distribution box of the test cabinet in an embodiment of the present application;

[0025] Fig. 9 A schematic diagram of the structure of a communication box of a test cabinet in an embodiment of the present application;

[0026] Fig.10 A schematic diagram of a communication box of a test cabinet in an embodiment of the present application from another angle;

[0027] Fig.11 This is a schematic diagram of the test cabinet according to an embodiment of the present application from another angle.

[0028] Description of Figure Numbers:

[0029] 10. Cabinet; 11. Frame; 12. First side panel; 121. First heat dissipation hole; 13. Second side panel; 131. Fan mounting hole; 20. Distribution box; 21. Power supply; 22. Connecting copper busbar; 30. Communication box; 31. Connector hole; 32. Second heat dissipation hole; 33. Power supply hole; 40. Measurement and control box; 50. Load holding assembly; 51. Load holding part; 511. Mounting part; 512. Outlet part; 513. Mounting position; 514. Mounting hole; 515. Positioning hole; 516. Outlet hole; 52. Load; 53. Fixing assembly; 54. Connector; 541. Threaded part; 542. Smooth part; 543. Elastic part; 55. Fixing bracket; 551. Fixing plate; 552. Positioning part; 553. Fixing hole. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0031] At present, in the production stage of vehicles, a load box is usually used as a device to simulate real load conditions, and the load box is integrated with a measurement and control box. The load box includes components such as resistors, inductors and capacitors. The main function of the integrated box of the load box and the measurement and control box is to provide automotive electronic controller products, such as BCM (Body Control Module), DCM (Doors Control Module), ECU (Electronic Control Unit), etc. with input signals, electronic or mechanical switches, simulated loads and measurement ports required to verify the normal operation of their functions, so as to realize the operation of the electronic controller when it is off the vehicle.

[0032] Since most of the current controllers use multi-channel CAN and LIN for control, the types and numbers of drive quantities (including high drive, bridge drive, low drive), analog quantities (anti-pinching strip resistance switching, etc.), and switch quantities (including high-effective, low-effective, etc.) controlled by the controller are relatively large. At present, the integrated box of the load box and the measurement and control box cannot meet the demand of testing with multiple test pieces in one integrated box. Therefore, multiple integrated boxes can only be combined into the entire system to carry multiple test pieces for testing. This combination will cause the entire test system to occupy too much space and is not convenient for system construction.

[0033] like Figures 1 to 11 As shown, an embodiment of the present application provides a test cabinet, which includes a cabinet body 10 and a distribution box 20, a communication box 30, a measurement and control box 40 and a load holding assembly 50 that are detachably arranged inside the cabinet body 10, the load holding assembly 50 includes a plurality of load holding parts 51 and a plurality of loads 52, the plurality of load holding parts 51 are movably arranged inside the cabinet body 10, the plurality of loads 52 are detachably connected to the load holding parts 51, the plurality of loads 52 are electrically connected to the distribution box 20 and the communication box 30 through the measurement and control box 40, and the communication box 30 is communicatively connected to the external experimental piece.

[0034] In specific implementation, the distribution box 20, communication box 30, measurement and control box 40 and load holding assembly 50 of the measurement and control cabinet of the embodiment of the present application are independently arranged in the cabinet 10, and multiple load holding parts 51 are integrated in the load holding assembly 50, which can be arbitrarily connected to the distribution box 20, the communication box 30 and the measurement and control box 40 through connecting wires, so that different loads 52 and the measurement and control box 40 have a variety of combinations, with high space utilization, avoiding the load and the measurement and control device to form a set of combined measurement and control system separately and concentrate them in the same box. The fixed arrangement mode avoids the situation where multiple sets of combined measurement and control systems are assembled in the cabinet 10 and occupy a large space; and the multiple load holding parts 51 can be movably arranged, so that the load 52 can be quickly installed and replaced on the load holding part 51, which is convenient for the load and test system to be built in the test cabinet.

[0035] Specifically, Figure 6 and Figure 7 As shown, the cabinet 10 includes a frame 11 and a plurality of side panels, the plurality of side panels include a first side panel 12 and a second side panel 13, the first side panel 12 has a plurality of first heat dissipation holes 121 arranged at intervals, which are used for heat dissipation of the internal components of the cabinet 10, and the second side panel 13 is provided with a plurality of fan mounting holes 131, which are used for mounting fans to further dissipate the heat of the internal components of the cabinet 10.

[0036] like Figure 4 and Figure 5 As shown, a test cabinet of an embodiment of the present application, wherein the load accommodating portion 51 includes a mounting portion 511 and a wire outlet portion 512 in a plate-like structure, the mounting portion 511 and the wire outlet portion 512 are connected at a preset angle, a plurality of loads 52 are detachably connected to the mounting portion 511, the wire outlet portion 512 has a plurality of wire outlet holes 516, and connecting wires of the loads 52 pass through the plurality of wire outlet holes 516.

[0037] In a specific implementation, the mounting portion 511 and the wire outlet portion 512 are connected at a preset angle, which can reduce the overall volume of the load accommodating portion 51. Moreover, after the load 52 is installed on the mounting portion 511, the wire outlet portion 512 protects the multiple loads 52 installed on the mounting portion 511, thereby avoiding direct contact between the load 52 and the external environment. Only the connecting wires of the load 52 pass through the wire outlet hole 516 to be connected to the measurement and control box 40.

[0038] The test cabinet of the embodiment of the present application has multiple pairs of guide rails arranged corresponding to multiple load-holding parts 51 on the two relatively arranged side surfaces of the cabinet body 10, and the extension directions of the multiple pairs of guide rails are perpendicular to the height direction of the cabinet body 10, and each installation part 511 can be slidably arranged in the corresponding pair of guide rails.

[0039] In specific implementation, each installation portion 511 can slide out of the cabinet 10 along a direction perpendicular to the height of the cabinet 10 through a guide rail, so that the operator has enough installation space to install the load 52 into the load accommodating portion 51, facilitating the operation of replacing the load 52.

[0040] Optionally, the cabinet 10 has a plurality of guide rails extending in the height direction, and each mounting portion 511 can slide freely in the height direction on the guide rails and can be locked at any height. Therefore, when the load 52 is mounted on each mounting portion 511, a sufficient distance can be provided between two adjacent mounting portions 511 in the height direction, so that the operator has sufficient installation space to install the load 52 into the load accommodating portion 51, which facilitates the operation of replacing the load 52.

[0041] like Figure 2 and Figure 3 As shown, the test cabinet of the embodiment of the present application, wherein the load holding assembly 50 also includes a fixing assembly 53, the fixing assembly 53 includes a connecting member 54 and a fixing bracket 55, the fixing bracket 55 includes a fixing plate 551 and a plurality of positioning portions 552 connected to the fixing plate 551 at a preset angle, the positioning portion 552 is used to locate the installation position of the fixing plate 551, the fixing plate 551 is pressed on the surface of the load 52, the connecting member 54 is penetrated through the fixing plate 551 and fixes the fixing plate 551 to the load holding portion 51.

[0042] In a specific implementation, the setting of the positioning portion 552 can determine the installation position of the fixing plate 551, so that the fixing plate 551 can be pressed on the surface of the load 52, so that the load 52 can be fixed to the installation portion 511, and the connecting piece 54 of the fixing assembly 53 is passed through the fixing plate 551 and connected to the load accommodating portion 51, so that the fixing plate 551 can be fixed to the installation portion 511, so that the fixing plate 551 can work together with the installation portion 511 to clamp the load 52 therebetween, thereby enhancing the installation stability of the load 52.

[0043] like Figure 2 and Figure 3 As shown, a test cabinet of an embodiment of the present application, wherein the fixing plate 551 has a fixing hole 553 arranged therethrough, the connecting member 54 is a bolt structure, the screw portion of the connecting member 54 includes a threaded portion 541 and a smooth portion 542, an elastic member 543 is sleeved on the outer circumference of the smooth portion 542, the connecting member 54 is connected to the load accommodating portion 51 through the threaded portion 541, and the load accommodating portion 51 and the elastic member 543 are respectively arranged on both sides of the fixing plate 551.

[0044] In specific implementation, the threaded portion 541 can ensure that the connecting member 54 can be fixed to the load-containing portion 51. When the screw portion of the connecting member 54 is inserted into the fixing hole 553, the threaded portion 541 is threadedly connected to the load-containing portion 51. The two ends of the elastic member 543 on the outer peripheral surface of the smooth portion 542 are respectively abutted against the surface of the fixing plate 551 facing away from the load-containing portion 51 and the bottom surface of the bolt head, and the elastic member 543 is in a compressed state, so that the fixing plate 551 has a downward pressure, and the load 52 is stably pressed on the surface of the load-containing portion 51, so that the load 52 has installation stability.

[0045] During the process of installing and removing the load 52, the operator only needs to lift the fixing plate 551 upwards by hand, so that the fixing plate 551 presses the elastic member 543 in the direction of the bolt head, thereby increasing the gap between the fixing plate 551 and the load accommodating portion 51, and the load 52 can be removed. During the installation process, the load 52 needs to be inserted into the gap between the fixing plate 551 and the load accommodating portion 51. The operator then loosens the fixing plate 551 to allow the elastic member 543 to restore its deformation, so that the fixing plate 551 and the load accommodating portion 51 can sandwich the load 52 in the middle, thereby completing the stable installation of the load 52.

[0046] Specifically, the elastic member 543 is a spring structure, which is relatively simple and can be easily sleeved on the outer peripheral surface of the smooth portion 542 , making it convenient to install the connecting member 54 .

[0047] like Figure 4 and Figure 5 As shown, the test cabinet of an embodiment of the present application, wherein the load accommodating portion 51 includes a plurality of mounting positions 513, a plurality of positioning holes 515 and a plurality of mounting holes 514, the mounting positions 513 are used to mount the load 52, the positioning holes 515 are arranged in the mounting positions 513, and the mounting holes 514 are arranged between two adjacent mounting positions 513.

[0048] In specific implementation, the positioning hole 515 is arranged in the installation position 513 to facilitate the insertion of the positioning part 552, so that the fixing plate 551 connected to the positioning part 552 can be accurately pressed on the surface of the load 52 without positional displacement; the installation hole 514 is arranged between two adjacent installation positions 513, which plays a role in avoiding the load 52 and avoiding conflict with the load 52 during the installation process.

[0049] Specifically, the load 52 has a connecting hole that is opposite to the positioning hole 515. During the installation process, the load 52 is first installed in the installation position 513, and the connecting hole is aligned with the positioning hole 515. The positioning portion 552 is then inserted into the connecting hole and the positioning hole 515 in sequence, thereby completing the assembly between the load 52 and the fixing component 53. This assembly method enables the load 52 to be stably installed in the installation position 513 without shaking.

[0050] Specifically, four positioning holes 515 are provided in an installation position 513, and the four positioning holes 515 are respectively provided at the four corners of the installation position 513, and there are two installation holes 514 between adjacent installation positions 513. The two installation holes 514 are arranged relative to the two positioning holes 515 on one side of the installation position 513, so that the fixing component 53 can be fixedly connected with the installation hole 514 and the two positioning holes 515 on both sides of the installation hole 514.

[0051] like Figure 1 and Fig.11 As shown, the test cabinet of the embodiment of the present application, wherein the distribution box 20, the communication box 30, the measurement and control box 40 and the load holding assembly 50 are arranged in sequence inside the cabinet 10 along the height direction, so that the entire cabinet 10 only occupies space in the height direction, saving the overall space, and multiple load holding parts 51 are arranged in sequence along the height direction. Since the multiple load holding parts 51 are arranged in a tray-like structure, the space occupied in height is small. Therefore, the multiple load holding parts 51 are arranged in sequence along the height direction, and the overall space occupied is small. The multiple mounting parts 511 are all perpendicular to the height direction and spaced apart along the height direction, so that the load 52 will not slip when installed on the mounting part 511.

[0052] like Figure 1 and Figure 8 As shown, a test cabinet of an embodiment of the present application, wherein a distribution box 20 includes a power supply 21 and a plurality of connecting copper busbars 22 protruding from the power supply 21, the plurality of connecting copper busbars 22 are electrically connected to a plurality of loads 52, and the distribution box 20 also has an input port, through which an external power line and a ground line are connected to the power supply 21.

[0053] During specific implementation, the external power line and the ground line can realize the power supply and grounding of the power supply 21 through the input port, and multi-channel power line distribution is realized inside the power supply 21. Moreover, the power supply can output power to the communication box 30, the measurement and control box 40 and the load holding component 50 through the connecting copper bus 22. Multiple connecting copper bus bars 22 can realize multi-channel output, so that each output can be protected by the circuit through the fuse, thereby improving the safety of the system and the stability of power distribution.

[0054] Specifically, the plurality of connecting copper bars 22 are divided into a plurality of pairs, each pair having two connecting copper bars 22 , which are respectively a positive copper bar and a negative copper bar, so as to form a complete circuit when other components are connected.

[0055] like Figure 1 , Fig. 9 and Fig.10As shown, in the test cabinet of the embodiment of the present application, a plurality of gateway controllers and a plurality of communication nodes are arranged inside the communication box 30, and a plurality of loads 52 are communicatively connected with the external experimental pieces through the gateway controllers and the communication nodes.

[0056] In specific implementation, when verifying the receiving and transmitting communication functions of CAN, ETH, and LIN, through the cooperation of the gateway controller and multiple communication nodes, it is possible to establish a communication connection with only one external experimental piece (i.e., the sample), avoiding the situation of directly using multiple external experimental pieces as communication loads for verification, thus saving overall costs.

[0057] Specifically, two gateway controllers and eight communication nodes are arranged inside the communication box 30, which are connected to an external test piece through a DB head connector (D-subminiature, D-type signal interface) to realize the verification of the transceiver communication function.

[0058] Specifically, the side wall of the communication box 30 is provided with a connector hole 31, multiple second heat dissipation holes 32, a power hole 33 and other wiring holes. The connector hole 31 is used to install a DB head connector, the multiple second heat dissipation holes 32 can dissipate heat inside the communication box 30, and the power hole 33 can pass through the power interface.

[0059] The test cabinet of the embodiment of the present application, wherein a controller module is provided in the measurement and control box 40, and the controller module is electrically connected to multiple loads 52, a communication box 30 and a distribution box 20, and the controller module is used to control the drive quantity, analog quantity and switching quantity of the load 52.

[0060] Optionally, the measurement and control box 40 has a plurality of controller modules, each of which can respectively control loads 52 of different combination types, and a plurality of controller modules can also be used in combination to achieve different functions.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0062] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A test cabinet, characterized in that: The invention comprises a cabinet (10) and a distribution box (20), a communication box (30), a measurement and control box (40) and a load accommodating assembly (50) which are detachably arranged inside the cabinet (10); the load accommodating assembly (50) comprises a plurality of load accommodating parts (51) and a plurality of loads (52); the plurality of load accommodating parts (51) are movably arranged inside the cabinet (10); the plurality of loads (52) are detachably connected to the load accommodating parts (51); the plurality of loads (52) are electrically connected to the distribution box (20) and the communication box (30) through the measurement and control box (40); and the communication box (30) is communicatively connected to an external experimental piece.

2. The test cabinet according to claim 1, characterized in that: The load accommodating portion (51) comprises a mounting portion (511) and a wire outlet portion (512) in a plate-like structure; the mounting portion (511) and the wire outlet portion (512) are connected at a preset angle; a plurality of loads (52) are detachably connected to the mounting portion (511); the wire outlet portion (512) has a plurality of wire outlet holes (516); and connecting wires of the loads (52) pass through the plurality of wire outlet holes (516).

3. The test cabinet according to claim 2, characterized in that: The cabinet (10) has a plurality of pairs of guide rails on the two oppositely disposed side surfaces thereof, which are arranged corresponding to the plurality of load containing portions (51); the extension directions of the plurality of pairs of guide rails are perpendicular to the height direction of the cabinet (10); and each of the mounting portions (511) is slidably disposed in a corresponding pair of guide rails.

4. The test cabinet according to claim 1, characterized in that: The load accommodating component (50) further comprises a fixing component (53), wherein the fixing component (53) comprises a connecting member (54) and a fixing bracket (55), wherein the fixing bracket (55) comprises a fixing plate (551) and a plurality of positioning portions (552) connected to the fixing plate (551) at a preset angle, wherein the positioning portions (552) are used to locate the installation position of the fixing plate (551), wherein the fixing plate (551) is pressed onto the surface of the load (52), and wherein the connecting member (54) is passed through the fixing plate (551) and fixes the fixing plate (551) to the load accommodating portion (51).

5. The test cabinet according to claim 4, characterized in that: The fixing plate (551) has a fixing hole (553) extending therethrough. The connecting member (54) is a bolt structure. The screw rod portion of the connecting member (54) includes a threaded portion (541) and a smooth portion (542). An elastic member (543) is sleeved on the outer circumference of the smooth portion (542). The connecting member (54) is connected to the load accommodating portion (51) via the threaded portion (541). The load accommodating portion (51) and the elastic member (543) are respectively arranged on both sides of the fixing plate (551).

6. The test cabinet according to claim 4, characterized in that: The load accommodating portion (51) comprises a plurality of mounting positions (513), a plurality of positioning holes (515) and a plurality of mounting holes (514); the mounting positions (513) are used to mount the load (52); the positioning holes (515) are arranged in the mounting positions (513); and the mounting holes (514) are arranged between two adjacent mounting positions (513).

7. The test cabinet according to claim 2, characterized in that: The distribution box (20), the communication box (30), the measurement and control box (40) and the load accommodating assembly (50) are sequentially arranged inside the cabinet (10) along the height direction, a plurality of the load accommodating parts (51) are sequentially arranged along the height direction, and a plurality of the mounting parts (511) are perpendicular to the height direction and are spaced apart along the height direction.

8. The test cabinet according to claim 1, characterized in that: The distribution box (20) comprises a power supply (21) and a plurality of connection copper bars (22) protruding from the power supply (21), wherein the plurality of connection copper bars (22) are electrically connected to the plurality of loads (52), and the distribution box (20) further comprises an input port, through which an external power line and a ground line are connected to the power supply (21).

9. The test cabinet according to claim 1, characterized in that: The communication box (30) is internally provided with a plurality of gateway controllers and a plurality of communication nodes, and the plurality of loads (52) are communicatively connected with the external experimental piece via the gateway controllers and the communication nodes.

10. The test cabinet according to claim 1, characterized in that: The measurement and control box (40) has a controller module therein, the controller module is electrically connected to the plurality of loads (52), the communication box (30) and the distribution box (20), and the controller module is used to control the drive quantity, analog quantity and switch quantity of the load (52).

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