Test bench

Abstract

The utility model provides a test bench, which is used for loading a plurality of power modules and comprises a bottom plate, a plurality of supporting assemblies, a plurality of side beam groups and a conductive assembly. The multiple supporting assemblies are fixed to one side of the bottom plate and arranged at intervals, and the multiple side beam sets are arranged on one side of the bottom plate and fixed to the multiple supporting assemblies. The side beam sets are arranged at intervals in the axial direction of the supporting assembly, a containing space is defined by every two adjacent side beam sets, the containing spaces are used for containing the power modules, and the power modules are fixed to the side beam sets. The conductive assembly is arranged on one side of the bottom plate, the extension direction of the conductive assembly is the same as the arrangement direction of the side beam sets, and the power modules are connected with the conductive assembly in a pluggable mode. According to the test bench provided by the invention, the side beam groups and the supporting assembly form a plurality of accommodating spaces, and when the plurality of power modules are inserted into the plurality of accommodating spaces, the plurality of power modules can be inserted into the conductive assembly, so that the plurality of power modules are electrically connected in parallel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of testing, and particularly relates to a test bench. BACKGROUND

[0002] Power modules are used to convert alternating current into direct current to charge other devices, and are important components of super-charging charging piles. In testing, multiple power modules are generally placed on a test bench, and adjacent two power modules are connected in parallel by wires and tested. However, when it is necessary to adjust the test scheme, for example, it is necessary to reduce one of the power modules, the wires of the power module need to be removed and reconnected to other power modules, which is relatively complex and is not conducive to adjusting the test scheme. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a test bench for loading multiple power modules, which comprises:

[0004] a bottom plate;

[0005] a plurality of support assemblies fixed to one side of the bottom plate and spaced apart;

[0006] a plurality of side beam groups arranged on the one side of the bottom plate and fixed to the plurality of support assemblies, the plurality of side beam groups being spaced apart along the axial direction of the support assemblies, and adjacent two side beam groups being arranged to form a receiving space, the receiving space being used for receiving the power modules, and the power modules being fixed to the side beam groups;

[0007] a conductive assembly arranged on the one side of the bottom plate, and the extension direction of the conductive assembly being the same as the arrangement direction of the plurality of side beam groups, and a plurality of the power modules being pluggably connected to the conductive assembly.

[0008] The test bench provided by the present application comprises a plurality of receiving spaces formed by the side beam groups and the support assemblies, and the conductive assembly is arranged on one side of the plurality of receiving spaces. When a plurality of power modules are inserted into the plurality of receiving spaces from the other side of the plurality of receiving spaces, the plurality of power modules can be plugged into the conductive assembly to achieve parallel electrical connection of the plurality of power modules. At the same time, the power modules only need to be pulled out of the receiving spaces to be removed, thereby reducing the operation cost of replacing the power modules. In addition, the test bench has good ventilation performance, which is conducive to heat dissipation of the power modules during testing.

[0009] Each of the support assemblies comprises a plurality of support pieces along the axial direction thereof, each of the support pieces is arranged between adjacent two side beam groups, and each of the support pieces is detachably connected to the adjacent two side beam groups.

[0010] Each of the support members comprises a support portion and two insertion portions arranged at opposite ends of the support portion, an outer diameter of the insertion portions is smaller than an outer diameter of the support portion, each of the side beam groups has an insertion hole in an axial direction of the support member, the insertion portions are inserted into the insertion holes, and the side beam groups abut against the support portions.

[0011] Each of the power modules has a first face and a second face arranged opposite to each other, when the power modules are arranged in the receiving space, the second face is pluggably connected to the conductive assembly; the plurality of support members comprises a plurality of first support members and a plurality of second support members, the second support members are closer to the conductive assembly than the first support members, when the power modules are arranged in the receiving space, the first support members abut against the first faces of the power modules.

[0012] The plurality of insertion holes comprises a plurality of first insertion holes and a plurality of second insertion holes, the second insertion holes are closer to the conductive assembly than the first insertion holes, the side beam groups have side end faces away from the conductive assembly, and the first insertion holes also penetrate the side end faces.

[0013] Each of the power modules has a plurality of connection terminals on a side facing the conductive assembly, the plurality of connection terminals are arranged at intervals in a direction perpendicular to an arrangement direction of the power modules, the conductive assembly comprises a plurality of conductive pieces arranged at intervals in the arrangement direction of the plurality of connection terminals, the plurality of conductive pieces have a plurality of intervals therebetween, the plurality of intervals comprises a first interval and a second interval, and the first interval is greater than or smaller than the second interval.

[0014] The test bench further comprises a protective cover, the protective cover comprises a protective portion and two fixing portions arranged at opposite ends of the protective portion, the protective portion is arranged on a side of the conductive assembly away from the power modules, the fixing portions are bent and connected to the protective portion, and the two fixing portions are arranged on a side of the protective portion close to the conductive assembly, and the fixing portions are fixed to the side beam groups.

[0015] Each of the power modules has a plurality of connection terminals on a side facing the conductive assembly, the plurality of connection terminals are arranged at intervals in a direction perpendicular to an arrangement direction of the power modules, the conductive assembly comprises a plurality of conductive pieces arranged at intervals in the arrangement direction of the plurality of connection terminals, along an extension direction of the conductive pieces, the conductive pieces have a wiring portion and a non-wiring portion, and a thickness of the wiring portion is greater than a thickness of the non-wiring portion.

[0016] The test bench further comprises a protective cover arranged on the side of the conductive assembly away from the power module, the protective cover comprises a first sub-protective cover and a second sub-protective cover along the arrangement direction of the plurality of power modules, and the first sub-protective cover and the second sub-protective cover have a gap therebetween, so that at least part of the wiring portion is exposed from the gap.

[0017] The test bench further comprises a moving device arranged on the other side of the bottom plate, so that the test bench can be moved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be described below.

[0019] Figure 1 It is a perspective view of the test bench in an embodiment of the present application.

[0020] Figure 2 It is an exploded view of the test bench shown in the figure. Figure 1

[0021] Figure 3 It is a perspective view of the test bench in cooperation with the power module in an embodiment of the present application.

[0022] Figure 4 It is a perspective view of the test bench in cooperation with the power module from another angle shown in the figure. Figure 3

[0023] Figure 5 It is a partial enlarged view of the test bench and the power module shown in the figure. Figure 4

[0024] Figure 6 It is a perspective view of the test bench in another embodiment of the present application.

[0025] Figure 7 It is a schematic view of the side beam group in cooperation with the support in an embodiment of the present application.

[0026] Figure 8 It is a front view of the side beam group and the support shown in the figure. Figure 7

[0027] Figure 9 It is an exploded view of the side beam group and the support shown in the figure. Figure 7

[0028] Figure 10 It is a schematic view of the conductive assembly in an embodiment of the present application.

[0029] Figure 11 It is a schematic view of the conductive assembly in an embodiment of the present application.​​​​​Figure 1 A rear view of the test bench shown.

[0030] Figure 12 A side view of the test bench in another embodiment of the present application.

[0031] Label explanation:

[0032] Test bench-1, base plate-10, support assembly-20, support-21, support part-211, plug-in part-212, first support-22, second support-23, side beam group-30, side end face-300, plug-in hole-31, first plug-in hole-311, second plug-in hole-312, conductive assembly-40, conductive part-41, wiring part-411, non-wiring part-412, connecting part-42, first spacing-43, second spacing-44, receiving space-50, protective cover-60, first sub-protective cover-61, second sub-protective cover-62, protective part-63, fixed part-64, side plate-71, top plate-72, moving device-80, power module-90, first face-91, second face-92, connection terminal-93. DETAILED DESCRIPTION

[0033] The following is the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements are also considered to be within the scope of the present application.

[0034] Before introducing the technical solutions provided by the present application, the technical problems in the related art will be introduced in detail.

[0035] With the rapid development of electric vehicles, the requirement for the charging speed of electric vehicles is also increasing. The power module is used to convert three-phase alternating current into high-voltage direct current suitable for charging the vehicle, which greatly improves the charging speed of the electric vehicle compared with directly using alternating current to charge the vehicle. Therefore, the power module can also be called a super-charging power module. The power range of the power module is generally 30-75kW, and the volume is relatively large. When testing the power module, multiple power modules are generally placed on a shelf, and then multiple power modules are connected in parallel through wires.

[0036] However, the test of the power module often adjusts the number of power modules in the test, thereby adjusting the test scheme. For example, the wires of a power module need to be disconnected, and then the wires are connected to other power modules. The adjustment of the wiring is relatively complex. At the same time, due to the relatively large weight of a single power module, it is difficult to move one of the power modules alone.

[0037] In view of this, in order to solve the above problems, the present application provides a test bench. Please refer to Figures 1-5 ,Figure 1 Fig. 1 is a perspective view of a test bench according to an embodiment of the present application. Figure 2 Fig. 2 is an exploded view of the test bench shown in Fig. 1. Figure 1 Fig. 3 is a perspective view of the test bench shown in Fig. 1. Figure 3 Fig. 4 is a perspective view of the test bench according to an embodiment of the present application when the test bench is combined with a power module. Figure 4 Fig. 5 is another perspective view of the test bench shown in Fig. 4. Figure 3 Fig. 6 is a perspective view of the test bench shown in Fig. 4. Figure 5 Fig. 7 is a partial enlarged view of the test bench shown in Fig. 4. Figure 4 Fig. 8 is a partial enlarged view of the test bench shown in Fig. 4.

[0038] The test bench 1 according to the embodiment is used to load a plurality of power modules 90, and the test bench 1 comprises a base plate 10, a plurality of support assemblies 20, a plurality of side beam groups 30, and a conductive assembly 40. The plurality of support assemblies 20 are fixed to one side of the base plate 10 and are arranged at intervals. The plurality of side beam groups 30 are arranged on one side of the base plate 10 and are fixed to the plurality of support assemblies 20. The plurality of side beam groups 30 are arranged at intervals along the axial direction of the support assemblies 20, so that two adjacent side beam groups 30 form a receiving space 50 for receiving the power modules 90, and the power modules 90 are fixed to the side beam groups 30. The conductive assembly 40 is arranged on one side of the base plate 10, and the extension direction of the conductive assembly 40 is the same as the arrangement direction of the plurality of side beam groups 30, and a plurality of power modules 90 can be plug- connected to the conductive assembly 40.

[0039] The test bench 1 according to the embodiment is mainly used to load a plurality of electronic modules, wherein the electronic modules include but are not limited to power modules 90, batteries, vehicle-mounted power supplies, etc., and the embodiment is only illustratively described by applying to the power modules 90. When testing, the power modules 90 are installed on the test bench 1, so that the parallel connection of a plurality of power modules 90 can be realized.

[0040] The test bench 1 comprises a base plate 10, a plurality of support assemblies 20, a plurality of side beam groups 30, and a conductive assembly 40. The base plate 10 is a basic flat plate for providing a loading basis for other components. The support assemblies 20 are the “skeleton” of the entire test bench 1 and mainly play a supporting role. The support assemblies 20 are fixed to one side of the base plate 10 and are arranged at intervals, that is, the plurality of support assemblies 20 are not arranged together but have a spacing therebetween. Alternatively, the support assemblies 20 can be arranged at the four corners of the base plate 10, so that the support structure of the support assemblies 20 is more stable.

[0041] The side beam group 30 is a support framework transverse to the test bench 1, mainly used for bearing the power module 90. A plurality of side beam groups 30 are arranged on one side of the base plate 10 and fixed to the support assembly 20, that is, the side beam group 30 and the support assembly 20 are arranged on the same side of the base plate 10. And the side beam group 30 is fixed to the support assembly 20, that is, the side beam group 30 is arranged on the support assembly 20, and the side beam group 30 is indirectly fixed to the base plate 10 through the support assembly 20. Specifically, the support assembly 20 can be arranged on the opposite sides of the top surface of the base plate 10, and the plurality of side beam groups 30 are supported by the support assemblies 20 on both sides. Alternatively, when the number of support assemblies 20 is four, they can be arranged at the four corners of the base plate 10, so that the support assembly 20 can better support the side beam group 30.

[0042] The plurality of side beam groups 30 are arranged in the axial direction of the support assembly 20, that is, the plurality of side beam groups 30 are arranged in the length direction of the support assembly 20, and the adjacent two side beam groups 30 are not in close contact, but have a certain interval. Thus, the adjacent two side beam groups 30 are arranged to form a receiving space 50, and the receiving space 50 is used to accommodate the power module 90. Specifically, the adjacent two side beam groups 30 can form a square receiving space 50, and the square power module 90 can be fixed to the receiving space 50 by being placed on the side beam group 30 closer to the base plate 10 and away from the top surface of the base plate 10, that is, the power module 90 is placed on the upper surface of the side beam group 30.

[0043] The conductive assembly 40 is an electrical connection system of the test bench 1, mainly used for electrically connecting a plurality of power modules 90. The conductive assembly 40 is arranged on one side of the base plate 10, that is, the conductive assembly 40, the power module 90, the support assembly 20, and the side beam group 30 are arranged on the same side of the base plate 10. The extension direction of the conductive assembly 40 is the same as the arrangement direction of the plurality of power modules 90, that is, the plurality of power modules 90 are arranged in the length direction of the conductive assembly 40. The plurality of power modules 90 can be plug-in connected to the conductive assembly 40, specifically, when the power module 90 is inserted into the receiving space 50 from the side of the test bench 1 away from the conductive assembly 40, the side of the power module 90 facing the conductive assembly 40 can be inserted into the conductive assembly 40 to realize electrical connection with the conductive assembly 40. When the power module 90 is pulled out of the receiving space 50 from the side of the test bench 1 away from the conductive assembly 40, the power module 90 is electrically disconnected from the conductive assembly 40.

[0044] In the related art, a plurality of power modules are usually electrically connected in parallel by wires. If the number of power modules needs to be adjusted, the wires connected to the power modules need to be removed and connected to other power modules, which is a complex adjustment method. Meanwhile, the power modules are heavy and difficult to move. In the embodiment, a plurality of storage spaces 50 are formed by the plurality of side beam groups 30 and the plurality of support assemblies 20, in other words, a plurality of drawer cavity structures arranged in the axial direction of the support assemblies 20 are formed, and the power modules 90 can be inserted into the drawer cavities. When the power modules 90 are inserted into the storage spaces 50, the power modules 90 can be inserted into the conductive assemblies 40 to achieve parallel electrical connection of the plurality of power modules 90. When one of the power modules 90 is pulled out of the storage space 50, the electrical connection of the other power modules 90 is not affected, and re-wiring of the power modules 90 is avoided. Moreover, the plurality of power modules 90 are electrically connected or contact-connected by the plug-in and plug-out method, which facilitates moving the heavy power modules 90, thereby making the replacement of the power modules 90 or the adjustment of the number of power modules 90 more efficient.

[0045] Moreover, in the embodiment, the test bench 1 has a simple structure, and is built by the side beam groups 30 and the support assemblies 20. There is a gap between adjacent side beam groups 30 and support assemblies 20, that is, the overall structure of the test bench 1 has good ventilation performance, thereby ensuring good heat dissipation of the power modules 90 during testing and avoiding high temperature of the power modules 90 affecting the test results.

[0046] In summary, the test bench 1 provided by the embodiment comprises a plurality of storage spaces 50 formed by the side beam groups 30 and the support assemblies 20, and the conductive assemblies 40 are arranged on one side of the plurality of storage spaces 50. When a plurality of power modules are inserted into the plurality of storage spaces 50 from the other side of the plurality of storage spaces 50, the plurality of power modules can be inserted into the conductive assemblies 40 to achieve parallel electrical connection of the plurality of power modules 90. Meanwhile, the power modules 90 only need to be pulled out of the storage spaces 50 for disassembly, thereby reducing the operation cost of replacing the power modules 90. Moreover, the test bench 1 has good ventilation performance, which is conducive to heat dissipation of the power modules 90 during testing.

[0047] Optionally, each side beam group 30 comprises two side beams, specifically, the two side beams are both square tubes, and the two side beams are arranged in parallel. The power modules 90 abut against the top surface of the side beams away from the bottom plate 10, thereby making the power modules 90 more stable when arranged in the storage spaces 50.

[0048] Optionally, the test bench 1 further comprises a plurality of side plates 71, the extension direction of the side plates 71 is the same as the arrangement direction of the plurality of side beam groups 30, and the side plates 71 are fixed to the plurality of side beam groups 30, thereby connecting the plurality of side beam groups 30 and making the overall structure of the test bench 1 more stable.

[0049] Optionally, the test bench 1 further comprises a top plate 72, the top plate 72 is arranged on the side of the plurality of side beam groups 30 away from the bottom plate 10, the top plate 72 is fixed to the side beam group 30 farthest from the bottom plate 10 and forms a receiving space 50 with the side beam group 30 farthest from the bottom plate 10 for receiving the power module 90. Specifically, the top plate 72 is U-shaped, and the two ends of the U-shaped top plate 72 are fixed to the opposite sides of the side beam group 30, that is, the top plate 72 and the topmost side beam group 30 form a receiving space 50 at the topmost position of the test bench 1, so that the test bench 1 can accommodate more power modules 90. At the same time, the U-shaped top plate 72 can also fix the power module 90 on the topmost layer to the side beam group 30 on the topmost layer, thereby preventing the power module 90 on the top layer from falling off.

[0050] Please refer to Figure 1 、 Figure 2 、 Figure 6 , Figure 6 is a schematic diagram of the three-dimensional structure of the test bench in another embodiment of the present application. In this embodiment, each of the support assemblies 20 comprises a plurality of support pieces 21 along the axial direction thereof, each of the support pieces 21 is arranged between two adjacent side beam groups 30, and each of the support pieces 21 is detachably connected to the two adjacent side beam groups 30.

[0051] The support assembly 20 comprises a plurality of support pieces 21 along the axial direction thereof, in other words, the support assembly 20 is not a whole long rod, but is divided into a plurality of sections along the extension direction thereof, each section being a support piece 21. The support piece 21 is arranged between two adjacent side beam groups 30, in other words, the two side beam groups 30 are separated by the support piece 21, so that a space, i.e. a receiving space 50, is formed between the two adjacent side beam groups 30. Specifically, when the side beam group 30 is square, the support piece 21 can be arranged at the four corners of the side beam group 30 respectively, so that the receiving space 50 between the two adjacent side beam groups 30 is larger.

[0052] Each of the support pieces 21 is used to detachably connect two adjacent side beam groups 30, in other words, the connection between each of the support pieces 21 and the side beam group 30 is detachable. That is, when the number of receiving spaces 50 is greater than the number of power modules 90 to be tested, the excess side beam groups 30 and the support pieces 21 can be detached, i.e. the height of the test bench 1 is reduced, so as to adapt to the current test scheme. For example, when the test bench 1 comprises six layers of side beam groups 30, one receiving space 50 is formed between each of the two adjacent side beam groups 30, i.e. the test bench 1 has five receiving spaces 50. At this time, if only four power modules 90 need to be tested, the uppermost side beam group 30 can be removed, so that the number of receiving spaces 50 of the test bench 1 is also adjusted to four, so as to adapt to the test scheme of different numbers of power modules 90.

[0053] Conversely, when the number of power modules 90 to be tested is six, a support 21 and a side beam set 30 can be used to build a storage space 50 above the uppermost side beam set 30, so that the test bench 1 includes seven side beam sets 30, i.e., six storage spaces 50, thereby adapting to the test scheme of six power modules 90. The embodiment divides the support assembly 20 into a plurality of supports 21, and the plurality of supports 21 are detachably connected to two adjacent side beam sets 30, so that the test bench 1 can flexibly adjust the height of the test bench 1, i.e., the number of storage spaces 50 of the test bench 1, according to the test scheme, thereby improving the applicability of the test bench 1.

[0054] Please refer to Figures 7-9 , Figure 7 for the schematic view of the side beam set and the support in cooperation in an embodiment of the present application. Figure 8 for Figure 7 the front view of the side beam set and the support. Figure 9 for Figure 7 the exploded view of the side beam set and the support. In the embodiment, each support 21 includes a support portion 211 and two plug-in portions 212 arranged at opposite ends of the support portion 211, and the outer diameter of the plug-in portion 212 is smaller than that of the support portion 211. Each side beam set 30 has a plug-in hole 31 in the axial direction of the support 21, the plug-in portion 212 is plugged into the plug-in hole 31, and the side beam set 30 abuts against the support portion 211.

[0055] As can be seen from the above, the support 21 detachably connects two adjacent side beam sets 30, thereby achieving flexible adjustment of the height of the test bench 1. In the embodiment, the support 21 includes a support portion 211 and plug-in portions 212 arranged at opposite ends of the support portion 211, in other words, the support 21 is divided into a support portion 211 and two plug-in portions 212 in the axial direction, and the support portion 211 is between the two plug-in portions 212. Moreover, the outer diameter of the plug-in portion 212 is smaller than that of the support portion 211, that is, the plug-in portion 212 is thinner than the support portion 211. The side beam set 30 has a plug-in hole 31 in the axial direction of the support 21, in other words, the side beam set 30 has a plug-in hole 31 that penetrates the side beam set 30 towards the bottom surface of the bottom plate 10 and away from the top surface of the bottom plate 10.

[0056] The insertion portions 212 are inserted into the insertion holes 31, and the side beam groups 30 abut against the support portions 211. That is, the support member 21 is fixedly connected to the adjacent two side beam groups 30 by inserting the insertion portions 212 at the opposite ends of the support member 21 into the insertion holes 31 of the two adjacent side beam groups 30. Meanwhile, the support member 21 makes the adjacent two side beam groups 30 have a certain interval by abutting the two adjacent side beam groups 30 against the support portions 211. The present embodiment makes the support member 21 detachably connected to the side beam groups 30 by the insertion, which reduces the operation difficulty of disassembling or assembling the test bench 1. Meanwhile, the support portions 211 that are thicker than the insertion portions 212 support and abut the adjacent two side beam groups 30, which makes the interval structure between the adjacent two side beam groups 30 more stable.

[0057] Please refer again to Figures 3-5 、 Figures 7-9 In the present embodiment, each power module 90 has a first face 91 and a second face 92 arranged oppositely, and when the power module 90 is arranged in the receiving space 50, the second face 92 is pluggably connected to the conductive assembly 40. The plurality of support members 21 includes a plurality of first support members 22 and a plurality of second support members 23, and the second support members 23 are closer to the conductive assembly 40 than the first support members 22. When the power module 90 is arranged in the receiving space 50, the first support members 22 abut against the first faces 91 of the power module 90.

[0058] Each power module 90 has a first face 91 and a second face 92 arranged oppositely. In the present embodiment, the side of the power module 90 away from the conductive assembly 40 is the first face 91, and the side of the power module 90 toward the conductive assembly 40 is the second face 92. When the power module 90 is arranged in the receiving space 50, the second face 92 is pluggably connected to the conductive assembly 40, that is, the face of the power module 90 cooperating with the conductive assembly 40 is the second face 92. The support members 21 include a plurality of first support members 22, and the first support members 22 are arranged at the ends of the side beam groups 30 away from the conductive assembly 40, that is, the support members 21 between the adjacent two side beam groups 30 are the first support members 22, and the support members 21 farthest away from the conductive assembly 40 are the first support members 22.

[0059] When the plurality of power modules 90 are arranged in the receiving space 50, the first support member 22 can abut against the first face 91 of the power module 90, in other words, the first support member 22 abuts against the face of the power module 90 which is away from the conductive assembly 40. That is, the first support member 22 limits the power module 90 from the insertion direction of the power module 90 after the power module 90 is arranged in the receiving space 50, so that the power module 90 is fixed in the receiving space 50. When it is necessary to pull out the power module 90 again, the first support member 22 needs to be taken out from between the side beam assemblies 30 first, and then the power module 90 is pulled out from the receiving space 50. Through the arrangement of the first support member 22, the fixing effect of the power module 90 and the test bench 1 is better, and the connection relationship between the power module 90 and the test bench 1 is more stable.

[0060] Please refer again to Figure 3 、 Figures 7-9 In the embodiment, the plurality of plug-in holes 31 include a plurality of first plug-in holes 311 and a plurality of second plug-in holes 312, the second plug-in holes 312 are closer to the conductive assembly 40 than the first plug-in holes 311, the side beam assembly 30 has a side end face 300 away from the conductive assembly 40, and the first plug-in hole 311 also penetrates the side end face 300.

[0061] From the above, it can be seen that the side beam assembly 30 has a plug-in hole 31, and the support member 21 is connected with the side beam assembly 30 in a detachable manner by being plugged into the plug-in hole 31. The plug-in hole 31 includes the first plug-in hole 311 arranged at one end of the side beam assembly 30 away from the conductive assembly 40, that is, the plug-in hole 31 includes the first plug-in hole 311, and the first plug-in hole 311 is the plug-in hole 31 arranged at one end of the side beam assembly 30 away from the conductive assembly 40. That is, the plug-in hole 31 farthest from the conductive assembly 40 of each side beam assembly 30 is the first plug-in hole 311. Moreover, the side beam assembly 30 has a side end face 300 away from the conductive assembly 40, in other words, the side end face 300 is the face of the side beam assembly 30 away from the conductive assembly 40. The first plug-in hole 311 also penetrates the side end face 300, that is, the first plug-in hole 311 penetrates the side end face 300 of the side beam assembly 30 away from the conductive assembly 40 in addition to penetrating the bottom face of the side beam assembly 30 close to the bottom plate 10 and the top face away from the bottom plate 10. Thus, the plug-in portion 212 of the support member 21 is exposed to the side end face 300, so that the support member 21 can be pulled out from the side end face 300.

[0062] When it is necessary to install or remove the power module 90, the support 21 can be pulled out from the side end face 300, and then the power module 90 is installed or removed. The present embodiment makes the installation or removal of the power module 90 simpler and reduces the difficulty of dismounting the support 21 by making the plug hole 31 penetrate through the side beam group 30 close to the bottom face of the bottom plate 10 and the top face away from the bottom plate 10, and also penetrate through the side end face 300 of the side beam group 30 away from the conductive assembly 40, and also penetrate through the side end face 300 of the side beam group 30 away from the conductive assembly 40 close to the bottom face of the bottom plate 10 and the top face away from the bottom plate 10.

[0063] Please refer to Figure 5 、 Figure 10 , Figure 10 FIG. 1 is a schematic view of the conductive assembly in an embodiment of the present application. In the present embodiment, each power module 90 includes a plurality of connection terminals 93 on the side facing the conductive assembly 40, and the plurality of connection terminals 93 are arranged at intervals in a direction perpendicular to the arrangement direction of the power module 90. The conductive assembly 40 includes a plurality of conductive members 41 arranged at intervals in the arrangement direction of the plurality of connection terminals 93. In the extension direction of the conductive member 41, the conductive member 41 has a wiring portion 411 and a non-wiring portion 412, and the thickness of the wiring portion 411 is greater than the thickness of the non-wiring portion 412.

[0064] Each power module 90 includes a plurality of connection terminals 93 on the side facing the conductive assembly 40, and the plurality of connection terminals 93 are arranged at intervals in a direction perpendicular to the arrangement direction of the power module 90. In other words, the side of the power module 90 inserted into the conductive assembly 40 has a plurality of connection terminals 93 for electrical connection with the conductive assembly 40, and the plurality of connection terminals 93 are arranged at intervals in a direction parallel to the bottom plate 10. The conductive assembly 40 includes a plurality of conductive members 41 arranged at intervals in the arrangement direction of the plurality of connection terminals 93. In other words, the conductive assembly 40 is composed of a plurality of conductive members 41, each of which corresponds to a connection terminal 93 and connects the same terminal of a plurality of power modules 90. For example, one conductive member 41 connects the positive terminals of a plurality of power modules 90, and another conductive member 41 connects the negative terminals of a plurality of power modules 90, thereby realizing parallel electrical connection of a plurality of power modules 90.

[0065] In the extension direction of the conductive member 41, the conductive member 41 has a wiring portion 411 and a non-wiring portion 412, wherein the wiring portion 411 is used for electrical connection with an external test circuit, and the non-wiring portion 412 is the remaining part of the conductive member 41 except the wiring portion 411. The thickness of the wiring portion 411 is greater than the thickness of the non-wiring portion 412, so that the wiring portion 411 can carry a larger current, thereby protecting the wiring portion 411 with a larger current and making the circuit structure of the conductive assembly 40 more secure.

[0066] Optionally, the conductive assembly 40 further comprises a connecting member 42, the extending direction of the connecting member 42 is perpendicular to the extending direction of the conductive member 41, and the connecting member 42 is used to connect the plurality of conductive members 41, so that the plurality of conductive members 41 are connected as a whole and are arranged at intervals, facilitating the disassembly and assembly of the conductive member 41.

[0067] Further optionally, the connecting member 42 comprises a first connecting sub-member and a second connecting sub-member, the first connecting sub-member is arranged on one side of the plurality of conductive members 41, and the second connecting sub-member is arranged on the other side of the plurality of conductive members 41, the first connecting sub-member and the second connecting sub-member cooperatively clamp the plurality of conductive members 41, so as to fix the plurality of conductive members 41.

[0068] Optionally, the power module 90 is plugged into the conductive assembly 40, which can also be understood as that the power module 90 clamps the sheet structure of the conductive member 41 by the clip terminals, and thus the terminals of the power module 90 can also be called crocodile mouth ports, which can be plugged into the conductive member 41 from one side and clamp the conductive member 41, so as to ensure the stability of the connection between the power module 90 and the conductive assembly 40.

[0069] Please refer again to Figure 5 , Figure 10 In the embodiment, each of the power modules 90 has a plurality of connecting terminals 93 on the side facing the conductive assembly 40, the plurality of connecting terminals 93 are arranged at intervals along the direction perpendicular to the arrangement direction of the power module 90, the conductive assembly 40 comprises a plurality of conductive members 41 arranged at intervals along the arrangement direction of the plurality of connecting terminals 93, the plurality of conductive members 41 have a plurality of intervals therebetween, the plurality of intervals comprise a first interval 43 and a second interval 44, the first interval 43 is greater than or smaller than the second interval 44.

[0070] As known from the above, the power module 90 has a plurality of connecting terminals 93, which will not be described herein in the embodiment. In the embodiment, the plurality of conductive members 41 are arranged corresponding to the plurality of connecting terminals 93, so that the plurality of conductive members 41 have a plurality of intervals therebetween. That is, there is a certain gap between the adjacent two conductive members 41, for example, when the number of the conductive members 41 is six, the conductive assembly 40 has five intervals. The plurality of intervals comprise a first interval 43 and a second interval 44, wherein the first interval 43 is greater than or smaller than the second interval 44, in other words, the first interval 43 is not equal to the second interval 44. Thus, the plurality of conductive members 41 have two kinds of intervals, and when the power module 90 is plugged into the conductive assembly 40, it can only be plugged in one direction, when the power module 90 is turned to the other direction, the intervals of the conductive assembly 40 cannot correspond to the intervals of the connecting terminals 93, so that the electrical connection cannot be achieved. Thus, it is prevented that the power module 90 is inserted reversely during operation, and the difficulty of operation is reduced, which has a foolproof design.

[0071] It is worth noting that when the number of spacings is odd, the position of the first spacing 43 cannot be in the middle of multiple spacings; that is, the multiple spacings cannot be set symmetrically. This is to prevent the power module 90 from still being able to be inserted normally when flipped. When the number of spacings is even, the first spacing 43 and the second spacing 44 also cannot be set symmetrically to prevent the power module 90 from still being able to be inserted normally when flipped.

[0072] Please refer to this again. Figure 2 In this embodiment, the test bench 1 further includes a protective cover 60. The protective cover 60 includes a protective part 63 and two fixing parts 64 disposed at opposite ends of the protective part 63. The protective part 63 is disposed on the side of the conductive component 40 away from the power module 90. The fixing parts 64 are bent and connected to the protective part 63, and the two fixing parts 64 are disposed on the side of the protective part 63 close to the conductive component 40. The fixing parts 64 are fixed to the side beam assembly 30.

[0073] The test bench 1 also includes a protective cover 60, which is used to prevent operators from getting electric shock. The protective cover 60 includes a protective part 63 and two fixing parts 64 located at opposite ends of the protective part 63. The protective part 63 is located on the side of the conductive component 40 away from the power module 90 and is the main protective part of the protective cover 60. The fixing parts 64 are bent and connected to the protective part 63, and the two fixing parts 64 are located on the same side of the protective part 63 near the conductive component 40. The fixing parts 64 are fixed to the side beam assembly 30. In other words, the protective cover 60 is U-shaped and surrounds the conductive component 40. The two ends of the U-shape are fixed to the side beam assembly 30, thereby fixing the protective cover 60 to the outside of the conductive component 40. This embodiment protects the safety of operators and reduces the operational risks of testing by adding a protective cover 60 to the test bench 1. Optionally, the conductive component 40 is fixed to the protective cover 60 and indirectly fixed to the side beam assembly 30 through the protective cover 60, which facilitates the fixed connection of the conductive component 40.

[0074] Please refer to this as well. Figures 10-11 , Figure 11 for Figure 1 The test bench shown is a rear view. In this embodiment, the test bench 1 further includes a protective cover 60, which is disposed on the side of the conductive component 40 away from the power module 90. Along the arrangement direction of the plurality of power modules 90, the protective cover 60 includes a first sub-protective cover 61 and a second sub-protective cover 62, with a gap between the first sub-protective cover 61 and the second sub-protective cover 62, so that at least a portion of the wiring portion 411 is exposed through the gap.

[0075] As can be seen from the above, the conductive part 41 of the conductive assembly 40 has a wiring portion 411, and the test bench 1 also has a protective cover 60 for surrounding the conductive assembly 40. On this basis, the present embodiment can divide the protective cover 60 into a first sub-protective cover 61 and a second sub-protective cover 62 along the arrangement direction of the plurality of power modules 90, in other words, the protective cover 60 is divided into the first sub-protective cover 61 and the second sub-protective cover 62 along the length direction of the conductive assembly 40. Meanwhile, the first sub-protective cover 61 and the second sub-protective cover 62 have a certain gap therebetween, that is, the first sub-protective cover 61 and the second sub-protective cover 62 are not in close contact, but have a spacing therebetween. At least part of the wiring portion 411 leaks out of the gap between the first sub-protective cover 61 and the second sub-protective cover 62, that is, part or all of the wiring portion 411 leaks out of the gap. In other words, the protective cover 60 does not completely shield the wiring portion 411, so that when the wiring portion 411 is wired, the line can directly pass out of the gap between the first sub-protective cover 61 and the second sub-protective cover 62, thereby reducing the operation cost of wiring of the test bench 1.

[0076] Please refer to Figure 12 , Figure 12 is a side view of the test bench in another embodiment of the present application. In the present embodiment, the test bench 1 further comprises a moving device 80 arranged on the other side of the base plate 10, so that the test bench 1 can be moved.

[0077] The test bench 1 further comprises a moving device 80, wherein the moving device 80 is arranged on the other side of the base plate 10, that is, the moving device 80 is arranged on the side of the base plate 10 away from the side beam group 30, the support assembly 20, and the conductive assembly 40. The moving device 80 can move the test bench 1. Optionally, the moving device 80 includes but is not limited to structures such as rollers, tracks, and balls. Specifically, when the moving device 80 is a roller, the roller can be arranged at the four corners of the test bench 1, so that the structure of the test bench 1 is more stable. The present embodiment adds the moving device 80 to the test bench 1, so that the test bench 1 can be conveniently moved to the place where testing is needed, thereby avoiding disassembly and reassembly of the test bench 1 and reducing the operation cost of the test bench 1.

[0078] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0079] Furthermore, the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or a quantity of indicated features. Thus, a feature defined with "first", "second" can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise explicitly specified and limited. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0080] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral. It can be a mechanical connection, or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0081] The above provides the content provided by the embodiments of the present application, the principles and embodiments of the present application are described and explained, and these explanations are only used to help understand the method of the present application and its core idea. The content of the specification should not be understood as a limitation of the present application, and those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application. These modifications and changes of the present application are within the scope of the claims of the present application and its equivalent technology.

Claims

1. A test bench for loading a plurality of power modules, characterized in that The test bench comprises: a base plate; a plurality of support assemblies fixed to one side of the base plate and spaced apart; a plurality of side beam groups arranged on the one side of the base plate and fixed to the plurality of support assemblies, the plurality of side beam groups being spaced apart along the axial direction of the support assemblies, and two adjacent side beam groups surrounding a receiving space for receiving the power modules, and the power modules being fixed to the side beam groups; a conductive assembly arranged on the one side of the base plate, and the extension direction of the conductive assembly being the same as the arrangement direction of the plurality of side beam groups, and a plurality of power modules being pluggably connected to the conductive assembly.

2. The test bed of claim 1, wherein, Each of the support assemblies comprises a plurality of support pieces along the axial direction thereof, each of the support pieces being arranged between two adjacent side beam groups, and each of the support pieces being detachably connected to the two adjacent side beam groups.

3. The test bed of claim 2, wherein, Each of the support pieces comprises a support portion and two plug-in portions arranged at opposite ends of the support portion, the outer diameter of the plug-in portions being smaller than the outer diameter of the support portion, each of the side beam groups has a plug-in hole along the axial direction of the support piece, the plug-in portions being plugged into the plug-in holes, and the side beam groups abutting against the support portions.

4. The test bed of claim 3, wherein, Each of the power modules has a first face and a second face arranged oppositely, when the power module is arranged in the receiving space, the second face is pluggably connected to the conductive assembly; the plurality of support pieces comprises a plurality of first support pieces and a plurality of second support pieces, the second support pieces being closer to the conductive assembly than the first support pieces, when the power module is arranged in the receiving space, the first support pieces abutting against the first face of the power module.

5. The test bed of claim 4, wherein, The plurality of plug-in holes comprises a plurality of first plug-in holes and a plurality of second plug-in holes, the second plug-in holes being closer to the conductive assembly than the first plug-in holes, the side beam groups having a side end face away from the conductive assembly, and the first plug-in holes also penetrating through the side end face.

6. The test bed of claim 1, wherein, Each of the power modules has a plurality of connection terminals on the side facing the conductive assembly, the plurality of connection terminals being spaced apart along a direction perpendicular to the arrangement direction of the power modules, the conductive assembly comprises a plurality of conductive pieces spaced apart along the arrangement direction of the plurality of connection terminals, the plurality of conductive pieces having a plurality of spacings therebetween, the plurality of spacings comprising a first spacing and a second spacing, the first spacing being greater than or smaller than the second spacing.

7. The test bed of claim 1, wherein, The test bench further comprises a protective cover, the protective cover comprising a protective portion and two fixing portions arranged at opposite ends of the protective portion, the protective portion being arranged on the side of the conductive assembly away from the power modules, the fixing portions being bently connected to the protective portion, and the two fixing portions being arranged on the side of the protective portion close to the conductive assembly, and the fixing portions being fixed to the side beam groups.

8. The test bed of claim 1, wherein, Each of the power modules comprises a plurality of connection terminals on a side facing the conductive assembly, the plurality of connection terminals being arranged along a direction perpendicular to the arrangement direction of the power modules, the conductive assembly comprises a plurality of conductive pieces arranged along the arrangement direction of the plurality of connection terminals, along an extension direction of the conductive pieces, the conductive pieces have a wiring portion and a non-wiring portion, the thickness of the wiring portion is greater than the thickness of the non-wiring portion.

9. The test bed of claim 8, wherein, The test bench further comprises a protective cover, the protective cover is arranged on a side of the conductive assembly away from the power modules, along the arrangement direction of the plurality of power modules, the protective cover comprises a first sub-protective cover and a second sub-protective cover, the first sub-protective cover and the second sub-protective cover have a gap therebetween, so that at least part of the wiring portion is exposed from the gap.

10. The test bed of claim 1, wherein, The test bench further comprises a moving device, the moving device is arranged on the other side of the bottom plate, so that the test bench can be moved.

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