Test bench of battery module

Abstract

The utility model provides a test bench for a battery module, and the test bench comprises a bottom plate which is provided with at least two guide rails at intervals. The two ends of each supporting beam are movably connected with one guide rail respectively, the two adjacent supporting beams and the two adjacent guide rails define a containing space used for containing the battery module, each supporting beam is movably connected with at least one fastening piece, and the fastening pieces are used for being detachably connected with the connecting parts. Due to the fact that the supporting beams are movably connected with the guide rails, the size of the containing space can be adjusted at any time according to the size of the battery module, the testing rack is suitable for the battery modules of different sizes, meanwhile, the fasteners are detachably connected with the connecting parts of the battery modules, the battery modules are locked and fixed through the fasteners when testing is needed, and the testing efficiency is improved. In this way, the actual use scene of the battery module can be simulated more accurately in the testing process, and the attaching effect between the battery module and the bottom plate can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing devices, in particular to a test bench for a battery module. BACKGROUND

[0002] The performance test of a battery module is an important process for evaluating the performance of the battery module. During the performance test, the battery module is usually placed directly on a test bench for testing. However, this testing method has many disadvantages, such as the inability to simulate the real situation of the battery module due to the lack of locking and fixing of the battery module, or the inability to guarantee the adhesion effect of the battery module and the test bench, thereby affecting the testing effect. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the present application is to provide a test bench for a battery module to solve or partially solve the problems in the background art.

[0004] In order to achieve the above purpose, the present application provides a test bench for a battery module, wherein the battery module comprises at least one connecting part, and the test bench comprises:

[0005] a bottom plate for supporting the battery module, wherein at least two guide rails are arranged on the bottom plate at intervals;

[0006] at least two support beams, wherein both ends of each support beam are movably connected to a guide rail, and adjacent two support beams and adjacent two guide rails form a containing space for placing the battery module, and at least one fastener is movably connected to each support beam, and the fastener is used for detachable connection with the connecting part.

[0007] Optionally, a plurality of connecting parts and a plurality of fasteners are provided, and the plurality of connecting parts and the plurality of fasteners are one-to-one corresponding and connected.

[0008] Optionally, the connecting part is arranged on the opposite two side walls of the battery module, each support beam comprises a support groove, one end of the fastener is located in the support groove and can move along the support groove, and the other end of the fastener is located outside the support groove and is used for connecting with the connecting part.

[0009] Optionally, a connecting hole is formed in the connecting part; the fastener comprises a fastening bolt and a fastening nut, one end of the fastening bolt is located in the support groove, and the other end of the fastening bolt is connected with the fastening nut after penetrating through the connecting hole.

[0010] Optionally, each of the support beams comprises a main support plate, a vertical plate and a connecting plate connected in sequence, the vertical plate is arranged on one side of the main support plate close to the bottom plate, the connecting plate is arranged on one side of the vertical plate close to the battery module, and the main support plate, the vertical plate and the connecting plate jointly enclose the support groove, and the connecting portion is located between the main support plate and the fastening bolt.

[0011] Optionally, the support groove is arranged along the length direction of the support beam, and / or the support groove is a T-shaped groove.

[0012] Optionally, a plurality of sliders are further included, and each end of each of the support beams is fixedly connected with a slider, and the slider is in sliding connection with the corresponding guide rail.

[0013] Optionally, a plurality of tightening handles are further included, and the plurality of tightening handles correspond to the plurality of sliders one by one, the slider is sleeved on the outer wall of the guide rail, the tightening handle is in threaded connection with the slider, and one end of the tightening handle can pass through the slider and abut against the guide rail.

[0014] Optionally, a water-cooling plate is further included, and the water-cooling plate is arranged between the bottom plate and the battery module.

[0015] Optionally, a cold plate support pad and / or a heat-conducting layer are further included, the cold plate support pad is located between the water-cooling plate and the bottom plate, and the heat-conducting layer is located between the water-cooling plate and the battery module.

[0016] As can be seen from the above, the test bench for the battery module provided in the application, the adjacent two support beams and the adjacent two guide rails jointly enclose the containing space for placing the battery module, and since the support beams are movably connected with the guide rails, the size of the containing space for placing the battery module can be adjusted at any time according to the size of the battery module, thereby making the test bench suitable for battery modules of various sizes. Meanwhile, the connecting portion of the fastener and the battery module is detachably connected, so that the fastener locks and fixes the battery module when testing is needed, so as to more accurately simulate the actual use scene of the battery module during testing, and the fitting effect between the battery module and the bottom plate can also be ensured, thereby improving the accuracy of testing. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1An exemplary structural schematic diagram of a test bench for testing a battery module according to an embodiment of the present application;

[0019] Figure 2 An exemplary structural schematic diagram of a test bench for testing a battery module according to an embodiment of the present application;

[0020] Figure 3 A top view of a test bench according to an embodiment of the present application;

[0021] Figure 4 An exploded schematic diagram of the test bench according to an embodiment of the present application; Figure 3 A sectional schematic diagram of B-B in the exploded schematic diagram of the test bench according to an embodiment of the present application;

[0022] Figure 5 A partial enlarged schematic diagram of A in the exploded schematic diagram of the test bench according to an embodiment of the present application; Figure 2

[0023] Figure 6 A front view of a test bench according to an embodiment of the present application;

[0024] Figure 7 A partial enlarged schematic diagram of C in the front view of the test bench according to an embodiment of the present application; Figure 6

[0025] An exploded schematic diagram of the test bench according to an embodiment of the present application; Figure 8 Figure 2

[0026] In the figure: 1, a base plate; 11, a guide rail; 2, a support beam; 21, a fastener; 211, a fastening bolt; 212, a fastening nut; 22, a support groove; 23, a main support plate; 24, a vertical plate; 25, a connecting plate; 26, a side plate; 27, a reinforcing rib; 3, a containing space; 4, a battery module; 41, a connecting portion; 411, a connecting hole; 5, a sliding block; 6, a tightening handle; 7, a heat-conducting pad; 8, a water-cooling plate; 81, a water passage; 9, a cooling plate support pad; 10, a test bench. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0028] ​​​It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Performance testing of battery modules is a crucial process for evaluating their performance. Typically, battery modules are placed directly on a test bench for testing. However, in practice, this method has several drawbacks, including:

[0030] Firstly, relying solely on the weight of the battery module to adhere to the test bench without applying additional clamping force cannot guarantee a proper fit between the battery module and the test bench, thus affecting the test results. This is especially true during water-cooling tests, where the inability to ensure proper adhesion between the battery module and the water-cooling plate leads to inaccurate test results.

[0031] Secondly, the battery module was placed directly on the test bench without being locked and fixed. For long-cycle tests such as cyclic expansion, the lack of locking and fixing of the battery module made it impossible to simulate the actual expansion force of the battery module, resulting in inaccurate test results.

[0032] In addition, since the space for placing battery modules in the existing test bench is fixed and cannot be adjusted according to the different sizes of battery modules, the test bench needs to be replaced when the size of the battery module to be tested changes, which prolongs the testing time and increases the cost of manufacturing the test bench.

[0033] Based on this, this application provides a test bench for battery modules, which is suitable for battery modules of various sizes. At the same time, the battery modules can be locked and fixed during testing to improve the accuracy of the test.

[0034] In some embodiments, Figure 1 An exemplary structural schematic diagram of the test bench 10 for the battery module is shown. Figure 2 An exemplary structural diagram is shown when testing a battery module using test bench 10.

[0035] Referring to Figure 1 and Figure 2 , the battery module 4 comprises at least one connecting part 41 for connecting with the test bench, as shown, the connecting part 41 may, for example, be a plurality of mounting parts provided on the side wall of the battery module 4. In the embodiment, the size of the battery module 4 is not limited, and the specific form of the connecting part 41 is also not limited.

[0036] The test bench 10 comprises a bottom plate 1 for supporting the battery module 4, and at least two guide rails 11 are arranged on the bottom plate 1. Exemplarily, two guide rails 11 can be arranged on the bottom plate 1, or a plurality of guide rails 11 can be arranged on the bottom plate 1. The guide rails 11 can be welded or glued on the bottom plate 1 to fix the guide rails 11 and ensure the stability of the guide rails 11 during the test.

[0037] The arrangement direction of the guide rail 11 can be parallel to the length direction of the bottom plate 1 (i.e. the M direction in Figure 1 ) and perpendicular to the width direction of the bottom plate 1 (i.e. the N direction in Figure 1 ), or the arrangement direction of the guide rail 11 can be parallel to the width direction of the bottom plate 1 and perpendicular to the length direction of the bottom plate 1, so that the arrangement direction of the guide rail 11 is adapted to the bottom plate 1, facilitating the subsequent placement of the battery module 4.

[0038] Further, the distance between the adjacent two guide rails 11 is greater than the maximum length of the existing battery module 4. Exemplarily, the maximum length of the existing battery module 4 is A, so the distance between the adjacent two guide rails 11 is greater than A, so that all existing battery modules 4 can be placed between the adjacent two guide rails 11.

[0039] Continuing to refer to Figure 1 and Figure 2 , the test bench 10 further comprises at least two support beams 2. Exemplarily, the test bench 10 can only have two support beams 2, or a plurality of support beams 2 can be provided. The two ends of each support beam 2 are movably connected to a guide rail 11, so that the support beam 2 can move relative to the guide rail 11, and the distance between the adjacent two support beams 2 can be flexibly adjusted. Thus, the size of the accommodating space 3 formed by the adjacent two support beams 2 and the adjacent two guide rails 11 for placing the battery module 4 can be flexibly adjusted, so that the accommodating space 3 is suitable for placing battery modules 4 of various sizes, and the application range of the test bench 10 is improved. When testing battery modules 4 of different sizes, the test bench 10 does not need to be replaced, and only the distance between the adjacent two support beams 2 needs to be adjusted.

[0040] The movably connected support beam 2 and guide rail 11 mean that the support beam 2 can move relative to the guide rail 11. Exemplarily, the support beam 2 and the guide rail 11 can be in sliding connection or rolling connection, etc.

[0041] Further, when the support beams 2 are provided in plurality and the guide rails 11 are provided in two, each two adjacent support beams 2 and the two guide rails 11 can jointly form a containing space 3, so that when the test bench 10 is used, one test bench 10 can be used to test multiple battery modules 4 simultaneously according to needs, greatly improving the test efficiency.

[0042] Each support beam 2 is movably connected with at least one fastener 21, and the fastener 21 is used for detachable connection with the connecting portion 41. When testing is needed, the fastener 21 is only needed to be connected with the connecting portion 41, so that the support beam 2 can be connected with the battery module 4. Thus, the support beam 2 can lock and fix the battery module 4. On the one hand, the support beam 2 can apply additional compression force to the battery module 4, so that the fitting effect between the battery module 4 and the bottom plate 1 is better, and the test effect is improved. On the other hand, the battery module 4 is locked and fixed, so that the real expansion force effect of the battery module 4 can be more accurately simulated during long-period testing such as cyclic expansion testing, and the accuracy of the test result is improved. When testing is not needed, the fastener 21 is only needed to be loosened from the battery module 4, so that the battery module 4 can be taken away without damaging the battery module 4, and the actual testing is facilitated.

[0043] The fastener 21 is movably connected with the support beam 2, so that the position of the fastener 21 on the support beam 2 can be flexibly adjusted, and thus the position of the fastener 21 can be flexibly adjusted according to actual test needs, so that the fastener 21 can be connected with the connecting portion 41 of the battery module 4.

[0044] The fastener 21 is movably connected with the support beam 2, which means that the fastener 21 can move relative to the support beam 2. For example, the fastener 21 and the support beam 2 can be in sliding connection or rolling connection.

[0045] In the present application, since the support beam 2 is movably connected with the guide rail 11, the size of the containing space 3 for placing the battery module 4 can be adjusted at any time according to the size of the battery module 4, so that the test bench 10 is suitable for battery modules 4 of various sizes. Meanwhile, the fastener 21 is detachably connected with the connecting portion 41 of the battery module 4. Thus, when testing is needed, the battery module 4 is locked and fixed by the fastener 21, so that the actual use scenario of the battery module 4 can be more accurately simulated during testing, and the fitting effect between the battery module 4 and the bottom plate 1 can also be ensured, and the accuracy of the test is improved.

[0046] In some embodiments, continuing to refer to Figure 2, both the connecting part 41 and the fastener 21 are provided with a plurality of them, and the plurality of connecting parts 41 and the plurality of fasteners 21 correspond to each other and are connected one by one. In this way, the plurality of fasteners 21 can be used to lock and fix the battery module 4 from various positions, and thus, during actual testing, the true expansion force effect of the battery module 4 can be more accurately simulated, improving the accuracy of the test results.

[0047] Specifically, the number of fasteners 21 on each support beam 2 can be the same or different. The number of fasteners 21 on each support beam 2 is set according to the number of connecting parts 41 of the corresponding battery module 4. The number of fasteners 21 can be equal to the number of connecting parts 41 to be connected to ensure that each connecting part 41 can be fixed by the fastener 21.

[0048] In some embodiments, refer to Figure 3 and Figure 4 , Figure 3 is the top view of the test bench 10 described in this application, Figure 4 is Figure 3 the cross-sectional schematic view of B-B in Figure 3 and Figure 4 As can be seen, connecting parts 41 are provided on both opposite side walls of the battery module 4. Each support beam 2 is provided with a support groove 22. The support groove 22 is arranged close to the battery module 4. One end of the fastener 21 is located in the support groove 22 and can move along the support groove 22, and the other end of the fastener 21 is located outside the support groove 22 and is used to connect with the connecting part 41.

[0049] Specifically, each support beam 2 includes a support groove 22. The support groove 22 is arranged close to the battery module 4. The fastener 21 is connected to the support groove 22 and can move relative to the support groove 22. Specifically, one end of the fastener 21 is located in the support groove 22 and can move along the support groove 22. In this way, the support groove 22 can both support the fastener 21 and provide a guiding function for the moving path of the fastener 21, ensuring that the fastener 21 can move along the support groove 22. Moreover, as the fastener 21 moves along the support groove 22, the position of the fastener 21 can be flexibly adjusted, and thus the position of the fastener 21 can be flexibly adjusted according to the position of the connecting part 41 of the battery module 4, ensuring that the fastener 21 can be connected to the connecting part 41 to fix the battery module 4.

[0050] In some embodiments, continue to refer to Figure 3 shown, the support groove​​​​In some embodiments, continue to refer to Figure 4 As shown, the support groove 22 is a T-shaped groove. The setting of the T-shaped groove can further limit the fastener 21 in the vertical direction, so that the fastener 21 will not disengage from the support groove 22 during the movement, ensuring the stability of the fastener 21.

[0052] In some embodiments, continue to refer to Figure 4 , a connection hole 411 is formed on the connecting portion 41; the fastener 21 includes a fastening bolt 211 and a fastening nut 212. One end of the fastening bolt 211 is located in the support groove 22, and the other end of the fastening bolt 211 passes through the connection hole 411 and is connected to the fastening nut 212.

[0053] Specifically, one end of the fastening bolt 211 is located in the support groove 22. The support groove 22 plays a role in limiting and guiding the fastening bolt 211. The other end of the fastening bolt 211 passes through the connection hole 411 and is connected to the fastening nut 212. In this way, the cooperation of the fastening nut 212 and the fastening bolt 211 realizes the detachable connection between the fastener 21 and the connecting portion 41.

[0054] In some embodiments, continue to refer to Figure 4 , each support beam 2 includes a main support plate 23, a vertical plate 24 and a connecting plate 25 connected in sequence. The vertical plate 24 is arranged on the side of the main support plate 23 close to the bottom plate 1, and the connecting plate 25 is arranged on the side of the vertical plate 24 close to the battery module 4. The main support plate 23, the vertical plate 24 and the connecting plate 25 enclose to form the support groove 22, and the connecting portion 41 is located between the main support plate 23 and the fastening bolt 211.

[0055] Specifically, the connecting plate 25 can be of an L-shaped structure. The main support plate 23, the vertical plate 24 and the connecting plate 25 enclose to form the support groove 22 for providing a receiving space for the fastener 21. The connecting portion 41 is located between the main support plate 23 and the fastening bolt 211. In this way, on the one hand, the main support plate 23 can provide a supporting effect for the connecting portion 41 to ensure the stability of the connecting portion 41. At the same time, the main support plate 23 and the fastening bolt 211 clamp the connecting portion 41 to facilitate the fixing of the connecting portion 41.

[0056] In some embodiments, refer to Figure 5 , Figure 6 and Figure 7 , Figure 5 is Figure 2 a partial enlarged schematic view of A in Figure 6 is the front view of the test bench 10 described in the present application, Figure 7 is Figure 6 a partial enlarged schematic view of C in Figure 5 , Figure 6 and Figure 7As shown, the test bench 10 further comprises a plurality of sliding blocks 5, each of the two ends of each support beam 2 is fixedly connected with a sliding block 5, and the sliding block 5 is in sliding connection with the corresponding guide rail 11.

[0057] Specifically, the sliding block 5 is connected with the corresponding guide rail 11, so that the sliding block 5 can move along the guide rail 11, and thus the distance between the adjacent two sliding blocks 5 can be adjusted, so that the distance between the two support beams 2 connected with the adjacent two sliding blocks 5 can be flexibly adjusted, and thus the size of the containing space 3 for placing the battery module 4 formed by the adjacent two support beams 2 and the adjacent two guide rails 11 can be flexibly adjusted, so that the containing space 3 is suitable for placing battery modules 4 of various sizes, and the application range of the test bench 10 is improved. When testing battery modules 4 of different sizes, the test bench 10 does not need to be replaced, and only the distance between the adjacent two support beams 2 needs to be adjusted.

[0058] Further, the support beam 2 further comprises a side plate 26, and each end of the main support plate 23 is provided with a side plate 26, and the side plate 26 is connected with the sliding block 5. Specifically, the connection mode of the side plate 26 with the sliding block 5 is not limited here, and exemplarily, the side plate 26 can be welded or bolted with the sliding block 5.

[0059] The side plate 26 can be an L-shaped plate, and the L-shaped plate is further provided with a reinforcing rib 27 on one side to enhance the connection stability between the side plate 26 and the sliding block 5.

[0060] In some embodiments, continuing to refer to Figure 5 , Figure 6 and Figure 7 , the test bench 10 further comprises a plurality of tightening handles 6, and the plurality of tightening handles 6 correspond to the plurality of sliding blocks 5 one by one. The sliding block 5 is sleeved on the outer wall of the guide rail 11, the tightening handle 6 is in threaded connection with the sliding block 5, and one end of the tightening handle 6 can abut against the guide rail 11 after penetrating through the sliding block 5.

[0061] Specifically, the tightening handle 6 is in threaded connection with the sliding block 5, when it is needed to fix the sliding block 5 on the guide rail 11, one end of the tightening handle 6 is penetrated through the sliding block 5 and abuts against the guide rail 11, so that the sliding block 5 can be fixed on the guide rail 11 through the tightening handle 6. When it is needed to adjust the position of the sliding block 5, the tightening handle 6 is loosened, so that the tightening handle 6 no longer abuts against the guide rail 11, and at this time, the position of the sliding block 5 on the guide rail 11 can be moved. When the sliding block 5 is moved to the required position, one end of the tightening handle 6 is again penetrated through the sliding block 5 and abuts against the guide rail 11, so as to fix the sliding block 5 on the guide rail 11 again. In this way, the position of the sliding block 5 can be flexibly adjusted, and the sliding block 5 can also be fixed at the required position, avoiding the movement of the sliding block 5 during the test and causing test failure.

[0062] In some embodiments, referring to Figure 8 , Figure 8 ,Figure 2 schematic diagram of explosion. As shown by Figure 8 When used for water cooling test of the battery module 4, the test bench 10 further comprises a water cooling plate 8 arranged between the base plate 1 and the battery module 4. The water cooling plate 8 is provided with water inlets 81 on opposite sides, so that external water enters the water cooling plate 8 through one of the water inlets 81 and flows out from the other water inlet 81, so as to achieve water cooling test of the battery module 4.

[0063] In some embodiments, referring to Figure 8 The test bench 10 can further comprise a cold plate support pad 9 between the water cooling plate 8 and the base plate 1.

[0064] Specifically, the cold plate support pad 9 is used to support the water cooling plate 8, so that the water cooling plate 8 can be in contact with or as close as possible to the bottom of the battery module 4, ensuring the accuracy of the water cooling test. In specific implementation, the cold plate support pad 9 of different thicknesses can be flexibly replaced, so that the water cooling plate 8 can be in contact with or as close as possible to the battery module 4 of different thicknesses, and thus the test bench 10 can be applied to battery modules 4 of different thicknesses.

[0065] Further, the test bench 10 can further comprise a heat conduction layer 7, which can be in the form of heat conduction glue or heat conduction pad for example, and the heat conduction layer 7 is arranged between the water cooling plate 8 and the battery module 4. The heat conduction layer 7 can quickly transfer the heat of the battery module 4 to the water cooling plate 8, or quickly transfer the cold of the water cooling plate 8 to the battery module 4, so as to simulate the real working condition of the battery module integrated in the battery pack or the whole vehicle, thereby improving the test efficiency and the accuracy of the test.

[0066] The test bench 10 described in the present application can be applied to battery modules 4 of different widths, lengths and thicknesses, greatly facilitating the test and experiment of the battery module 4. Moreover, by locking and fixing the battery module 4 through the test bench 10, the real constraint condition of the battery module 4 in the battery pack can be simulated, so that the test result is closer to the actual use scene. The mechanical test and the thermal related test can both use this test bench, and it is suitable for battery modules 4 of different sizes in different projects.

[0067] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of the present application (including claims) to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details.

[0068] Embodiments of the application are intended to embrace all such alterations, modifications, and variations that fall within the broad scope of the appended claims. Accordingly, any one or more features of a given embodiment are not mandatory except where the claims expressly state otherwise.

Claims

1. A test bench for a battery module, the battery module comprising at least one connecting portion, characterized in that, The test bench includes: A base plate is used to support the battery module, and at least two guide rails are spaced apart on the base plate; At least two support beams are provided, and each of the two ends of the support beams is movably connected to a guide rail. Two adjacent support beams and two adjacent guide rails together form a receiving space for placing the battery module. At least one fastener is movably connected to each support beam, and the fastener is used for detachable connection with the connecting part.

2. The test bench according to claim 1, characterized in that, Multiple connecting parts and multiple fasteners are provided, and the multiple connecting parts and multiple fasteners correspond one-to-one and are connected.

3. The test bench according to claim 1, characterized in that, The battery module has a connecting part on each of its two opposite side walls. Each support beam includes a support groove. One end of the fastener is located in the support groove and can move along the support groove. The other end of the fastener is located outside the support groove and is used to connect with the connecting part.

4. The test bench according to claim 3, characterized in that, The connecting part has a connecting hole; the fastener includes a fastening bolt and a fastening nut, one end of the fastening bolt is located in the support groove, and the other end of the fastening bolt passes through the connecting hole and is connected to the fastening nut.

5. The test bench according to claim 4, characterized in that, Each of the support beams includes a main support plate, a vertical plate, and a connecting plate connected in sequence. The vertical plate is located on the side of the main support plate near the bottom plate, and the connecting plate is located on the side of the vertical plate near the battery module. The main support plate, the vertical plate, and the connecting plate together form the support groove, and the connecting part is located between the main support plate and the fastening bolt.

6. The test bench according to claim 3, characterized in that, The support groove is provided along the length of the support beam, and / or the support groove is a T-shaped groove.

7. The test bench according to claim 1, characterized in that, It also includes multiple sliders, with each end of each support beam being fixedly connected to a slider, and the sliders being slidably connected to the corresponding guide rails.

8. The test bench according to claim 7, characterized in that, It also includes multiple tightening handles, each corresponding to one of the multiple sliders. The sliders are sleeved on the outer wall of the guide rail, and the tightening handles are threadedly connected to the sliders. One end of the tightening handle can pass through the slider and abut against the guide rail.

9. The test bench according to claim 1, characterized in that, It also includes a water-cooled plate, which is disposed between the base plate and the battery module.

10. The test bench according to claim 9, characterized in that, It also includes a cold plate support pad and / or a thermally conductive layer, wherein the cold plate support pad is located between the water-cooled plate and the base plate, and the thermally conductive layer is located between the water-cooled plate and the battery module.

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