Test device

Abstract

The invention discloses a test device, and relates to the technical field of test devices. The test device comprises a base, two supporting seat groups, two supporting beams and a driving piece group. The supporting seats are arranged on the base, the two supporting seat sets are spaced in the second direction and used for supporting the two supporting beams respectively, the two supporting beams are parallel and directly face each other in the second direction, the two supporting beams are suitable for being assembled with a to-be-tested piece in a matched mode, and driving shafts of the two driving pieces are connected with the two ends, staggered in the second direction, of the two supporting beams respectively. A driving shaft of the driving piece can move close to or away from the base. The to-be-tested piece is fixed to the two supporting beams, the two supporting beams are driven by the two driving pieces, torque can be applied to the to-be-tested piece fixed to the two supporting beams so as to test whether the torsional rigidity of the to-be-tested piece meets the requirement or not, and the testing device is easy to assemble, convenient to operate and high in testing efficiency. According to the test device, the deformation stroke generated by the to-be-tested piece can be adjusted, and benchmarking of simulation working conditions can be facilitated.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a testing equipment. Background Technology

[0002] In real-world road conditions, batteries exhibit significant torsional misalignment. The damage caused by torsional misalignment is more severe than that caused by vibration or impact. However, in related technologies, the verification system for vehicle batteries only includes battery vibration and impact, resulting in insufficient verification of the structural strength of vehicle battery test components and making it difficult to guarantee the safety performance of battery test components after they are installed in vehicles. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a testing device that is simple to assemble and easy to operate, and can verify whether the torsional stiffness of the test specimen meets the requirements.

[0004] The testing apparatus according to an embodiment of the present invention includes: a base; two sets of support bases, each set of support bases including two support bases spaced apart along a first direction, the support bases being disposed on the base, the two sets of support bases being spaced apart along a second direction; two support beams, the two sets of support bases respectively supporting the two support beams, the two support beams being parallel and arranged facing each other along the second direction, the two support beams being adapted to assemble with a test piece; and a driving component group, the driving component group including two driving components, the driving shafts of the two driving components being respectively connected to the two ends of the two support beams that are offset along the second direction, the driving shafts of the driving components being able to move closer to or further away from the base.

[0005] According to the test apparatus of the present invention, by fixing the test piece to two support beams and driving the two support beams through two driving components, torque can be applied to the test piece fixed on the two support beams to test whether the torsional stiffness of the test piece meets the requirements. The test apparatus is simple to assemble and easy to operate. The test apparatus allows the deformation stroke generated by the test piece to be adjustable, which can facilitate the comparison with simulated working conditions. The test apparatus also has the advantages of low test cost and fast test speed.

[0006] According to some embodiments of the present invention, the drive component group is a set, and the two support seats of each set of support seats correspond to the two ends of the corresponding support beam. In one set of support seats, the support seat closer to the drive component corresponding to the corresponding support beam is constructed as a first support seat, and the support seat farther from the drive component corresponding to the corresponding support beam is constructed as a second support seat. The first support seat includes: a first seat body and a first pin. The first seat body has a first mating hole, and the first pin passes through the first mating hole and connects to the corresponding support beam. Along the moving direction of the drive shaft, the size of the first mating hole is larger than the diameter of the first pin. The second support seat includes: a second seat body and a second pin. The second seat body has a second mating hole, and the second pin passes through the second mating hole and connects to the corresponding support beam. The diameter of the second mating hole is adapted to the diameter of the second pin, so that the support beam is rotatably mounted on the second support seat.

[0007] According to some embodiments of the present invention, the drive component group is divided into two groups, and the two support seats of each support seat group correspond to the two ends of the corresponding support beam. The support seat is constructed as a first support seat, which includes: a first seat body and a first pin. The first seat body has a first mating hole, and the first pin passes through the first mating hole and is connected to the corresponding support beam. Along the moving direction of the drive shaft, the size of the first mating hole is larger than the diameter of the first pin.

[0008] According to some embodiments of the present invention, the first support base further includes: a limiting member, a portion of which extends into the first mating hole, the extent of which the limiting member extends into the first mating hole is adjustable, and the limiting member is provided on both the upper and lower sides of the first pin.

[0009] According to some embodiments of the present invention, the first base body is formed with an assembly hole, the assembly hole is connected to the first mating hole, and the assembly hole is formed on both the upper and lower sides of the first mating hole. The limiting member corresponds to the assembly hole one by one and has an external thread. The assembly hole has an internal thread, and the limiting member is threadedly engaged with the corresponding assembly hole.

[0010] According to some embodiments of the present invention, the test apparatus further includes: a transmission component and a third pin, wherein the number of the transmission component, the third pin, and the driving component are the same and correspond one-to-one, a third mating hole is formed at one end of the support beam that mates with the driving component, the transmission component passes through the third mating hole, the third pin passes through the corresponding support beam and the corresponding transmission component, and at least a portion of the surface of the transmission component that mates with the third mating hole is constructed as an arc surface.

[0011] According to some embodiments of the present invention, the surface of the transmission member that mates with the third mating hole surrounds the third pin.

[0012] According to some embodiments of the present invention, the test apparatus further includes: a drive support, the drive support being disposed on the base, the number of drive supports being the same as and corresponding one-to-one with the drive members, and the drive members being disposed on the corresponding drive supports.

[0013] According to some embodiments of the present invention, the test apparatus further includes: a vibration table, wherein the base is disposed on the vibration table.

[0014] According to some embodiments of the present invention, the test apparatus further includes: a lifting lug disposed on the base; and / or, the base having a mounting hole, the support seat being fitted and assembled with the mounting hole to be disposed on the base.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the test apparatus according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the test apparatus according to an embodiment of the present invention. Figure 1 ; Figure 3 This is a cross-sectional schematic diagram of the test apparatus according to an embodiment of the present invention. Figure 2 .

[0017] Figure label: Base 1; First mounting hole 11; Second mounting hole 12; Support base 2; First support base 21; First base body 211; First pin 212; First mating hole 213; Limiting member 214; Second support base 22; Second base body 221; Second pin 222; Second mating hole 223; Support beam 3; third mating hole 31; connecting hole 32; Drive component 4; drive shaft 41; 51 pad; 52 controller; 521 display screen; 6. Drive support; 7. Transmission component; 8. Third pin; 9. Lifting lug; Experimental apparatus 10; Test piece 20; liquid cooling pipe 201. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The following is for reference. Figure 1 and Figure 2 The experimental apparatus 10 according to an embodiment of the present invention is described.

[0020] like Figure 1 and Figure 2 As shown, the test apparatus 10 according to an embodiment of the present invention includes: a base 1, two sets of support bases, two support beams 3, and a drive assembly. Each set of support bases includes two support seats 2 spaced apart along a first direction, the support seats 2 being disposed on the base 1. The two sets of support bases are spaced apart along a second direction, and the two sets of support bases are respectively used to support two support beams 3. The two support beams 3 are parallel and arranged facing each other along the second direction. The two support beams 3 are adapted to be assembled with the test piece 20. The drive assembly includes two drive components 4, and the drive shafts 41 of the two drive components 4 are respectively connected to the two ends of the two support beams 3 that are offset along the second direction. The drive shafts 41 of the drive components 4 can move closer to or further away from the base 1.

[0021] The testing device 10 can be used to perform torsional stiffness tests, vibration tests, and combined torsional stiffness and vibration tests on the test piece 20 to verify whether the structural strength of the test piece 20 meets the requirements, thereby reducing the risk of failure due to insufficient structural verification after the test piece 20 is installed in the vehicle. As some embodiments of this application, the test piece 20 can be a battery pack, battery module, battery tray, etc.

[0022] The base 1 can serve as the base plate of the test device 10 for installing various components of the test device 10. As some embodiments of this application, the base 1 can have multiple through holes. The support seat 2 is located on the base 1, and fasteners (e.g., bolts, screws, etc.) can be inserted through the through holes of the base 1 to install two sets of support seats on the base 1.

[0023] In both sets of support assemblies, each set includes two supports along the first direction (e.g., Figure 1 As shown) the spaced support bases 2, the two sets of support bases are along the second direction (as shown) Figure 1 As shown, the two support beams 3 are spaced apart and can be installed on two sets of support bases. As some embodiments of this application, the support beams 3 can be screwed or snapped to the support bases.

[0024] Two support beams 3 can be spaced apart along a second direction, and the two support beams 3 are parallel and directly opposite each other along the second direction. That is, the first direction can be perpendicular to the second direction to simulate the two main beams of a vehicle. The two support beams 3 are suitable for assembly with the test piece 20. The distance between the two support beams 3 can be adjusted according to the model (length dimension along the second direction) of the test piece 20. As some embodiments of this application, the two support beams 3 can have multiple through holes for mounting the test piece 20 so that the test piece 20 is connected to the two support beams 3 by bolts.

[0025] The drive assembly includes two drive components 4, which can be drive motors or drive cylinders, etc. Each drive component 4 may have a drive shaft 41. The drive component 4 transmits power to the corresponding support beam 3 through the drive shaft 41, thereby causing the corresponding support beam 3 to twist. The drive shafts 41 of the two drive components 4 are respectively connected to the two ends of the two support beams 3 that are offset along the second direction, as shown below. Figure 1 As shown, taking the first direction as the left-right direction and the second direction as the front-back direction as an example, in the two driving components 4, the driving shaft 41 of the driving component 4 on the left side is connected to the left end of the support beam 3 on the front side, and the driving shaft 41 of the driving component 4 on the right side is connected to the right end of the support beam 3 on the rear side. The driving shaft 41 of the driving component 4 can move closer to or further away from the base 1 to drive the corresponding support beam 3 to twist, so as to apply torque to the test piece 20 fixed on the two support beams 3, so as to test whether the torsional stiffness of the test piece 20 meets the requirements.

[0026] As some embodiments of this application, such as Figure 1 As shown, the test piece 20 may have a liquid cooling pipe 201, which can be used to simulate the liquid cooling device in a battery. The liquid cooling pipe 201 may have a liquid cooling connector, which can be connected to an external liquid cooler. Refrigerant can be introduced into the liquid cooling pipe 201 through the liquid cooler. Whether the refrigerant leaks within the test piece can be used as a basis for judging whether the strength of the test piece 20 meets the requirements. For example, in a torsion test, if the refrigerant leaks within the test piece 20, it indicates that the torsional strength of the test piece 20 is insufficient. If the refrigerant does not leak within the test piece 20 after multiple torsion tests, it indicates that the torsional strength of the test piece 20 meets the requirements.

[0027] In the above embodiment, by fixing the test piece 20 to two support beams 3 and driving the two support beams 3 through two driving components 4, torque can be applied to the test piece 20 fixed on the two support beams 3 to test whether the torsional stiffness of the test piece 20 meets the requirements. The test device 10 is simple to assemble and easy to operate. The test device 10 makes the deformation stroke generated by the test piece 20 adjustable, which can facilitate the comparison with the simulated working conditions. The test device 10 has the advantages of low test cost and fast test speed.

[0028] As some embodiments of this application, such as Figure 1 As shown, before installing the test piece 20 onto the two support beams 3, a pad 51 can be placed below the two support beams 3 to support them, so that the two support beams 3 can be horizontal relative to the base 1, thereby improving the simulation of the test, facilitating the installation of the test piece 20, and reducing the risk of deformation of the test piece 20 due to installation reasons.

[0029] As some embodiments of this application, the maximum output force of the drive component 4 can be calculated based on the maximum displacement of the vehicle during enhanced road testing. For example, the actual working conditions such as a single front wheel lifting by 250mm, or a left front wheel and right rear wheel lifting by 120mm, are calculated and equivalent to the diagonal displacement of the support beam 3 and the test piece 20. The type of drive component 4 can be selected based on the calculated equivalent displacement and the torsional stiffness of the test piece 20. For example, a drive component 4 capable of applying a force of over 1000kg can be selected to achieve continuous cycling of the specified displacement. As some embodiments of this application, the number of tests can reach 20,000 times. This setting can fully test the torsional stiffness of the test piece 20 to obtain valid conclusions.

[0030] As some embodiments of this application, the test apparatus 10 also includes a controller 52, which can be disposed on the base 1. The controller 52 has a display screen 521. The displacement value can be controlled by the controller 52 and set in the display screen 521 of the controller 52 in front. The controller 52 is connected to an external power supply, and the power supply and control signals are connected from the controller 52 to the drive unit 4 for precise control.

[0031] In some embodiments of this application, such as Figure 1As shown, the driving component group is a set, and the two support seats 2 of each set of support seats correspond to the two ends of the corresponding support beam 3. Among the two support seats 2 of a set of support seats, the support seat 2 that is closer to the driving component 4 corresponding to the corresponding support beam 3 is constructed as the first support seat 21, and the support seat 2 that is farther away from the driving component 4 corresponding to the corresponding support beam 3 is constructed as the second support seat 22. The first support seat 21 includes: a first seat body 211 and a first pin 212. The first seat body 211 has a first mating hole 213, and the first pin 212... 2. The first mating hole 213 is inserted through the first mating hole 213 and connected to the corresponding support beam 3. Along the moving direction of the drive shaft 41, the size of the first mating hole 213 is larger than the diameter of the first pin 212. The second support seat 22 includes: a second seat body 221 and a second pin 222. The second seat body 221 has a second mating hole 223. The second pin 222 is inserted through the second mating hole 223 and connected to the corresponding support beam 3. The diameter of the second mating hole 223 is adapted to the diameter of the second pin 222 so that the support beam 3 is rotatably disposed on the second support seat 22.

[0032] Specifically, there can be two sets of support seats. The two support seats 2 in each set can be connected to the two ends of the corresponding support beam 3 respectively. The two support seats 2 in a set of support seats can include a first support seat 21 and a second support seat 22.

[0033] The first support base 21 may include a first base body 211 and a first pin 212. The first base body 211 may be connected to the base 1. The first base body 211 may have a first mating hole 213. The first mating hole 213 may penetrate the first base body 211 along a second direction. The first pin 212 may pass through the first mating hole 213 and be fixedly connected to the corresponding support beam 3. For example, the first pin 212 may pass through the corresponding support beam 3 to be fixedly connected to the corresponding support beam 3, or the first pin 212 may be welded to the corresponding support beam 3, snapped, etc. During the torsion test, the driving member 4 drives the support beam 3 to twist. The support beam 3 can drive the first pin 212 to move together. In addition, along the moving direction (third direction) of the driving shaft 41, the size of the first mating hole 213 is larger than the diameter of the first pin 212. This arrangement allows the first pin 212 to move up and down within the first mating hole 213 to match the twisting of the support beam 3.

[0034] The second support base 22 may include a second base body 221 and a second pin 222. The second base body 221 can be connected to the base 1. The second base body 221 may have a second mating hole 223, which can penetrate the second base body 221 along a second direction. The second pin 222 can pass through the second mating hole 223 and be fixedly connected to the corresponding support beam 3. The diameter of the second mating hole 223 is adapted to the diameter of the second pin 222. During the torsion test, the driving component 4 drives the support beam 3 to twist. The support beam 3 can rotate relative to the second base body 221 around the central axis of the second pin 222, so as to achieve the effect of rotatably setting the support beam 3 on the second support base 22.

[0035] The drive assembly can be a set, which may include two drive components 4. Among the two drive components 4, the support seat 2 closer to the drive component 4 corresponding to the corresponding support beam 3 can be constructed as a first support seat 21, and the corresponding support beam 3 can move relative to the first support seat 21. The support seat 2 farther from the drive component 4 corresponding to the corresponding support beam 3 can be constructed as a second support seat 22, and the corresponding support beam 3 can rotate relative to the second support seat 22. Taking the first direction as the left-right direction and the second direction as the front-back direction as an example, as follows... Figure 1 As shown, in the two drive members 4, the drive member 4 located on the left side is connected to the left end of the support beam 3 located on the front side, and the drive shaft 41 of the drive member 4 located on the right side is connected to the right end of the support beam 3 located on the rear side. The drive shaft 41 of the drive member 4 can move closer to or further away from the base 1 to drive the corresponding support beam 3 to twist, so as to apply torque to the test piece 20 fixed on the two support beams 3 to test the torsional stiffness of the test piece 20.

[0036] In some embodiments of this application, the drive assembly consists of two groups (not shown in the figure). The two support seats 2 of each support seat group correspond to the two ends of the corresponding support beam 3. The support seat 2 is constructed as a first support seat 21. The first support seat 21 includes: a first seat body 211 and a first pin 212. The first seat body 211 has a first mating hole 213. The first pin 212 passes through the first mating hole 213 and is connected to the corresponding support beam 3. Along the moving direction of the drive shaft 41, the size of the first mating hole 213 is larger than the diameter of the first pin 212.

[0037] The support base assembly can have two sets, with each set consisting of two support bases 2 that can be connected to the two ends of the corresponding support beam 3. The support base 2 can be constructed as a first support base 21, which may include a first body 211 and a first pin 212. The first body 211 can be connected to the base 1 and may have a first mating hole 213. The first mating hole 213 can penetrate the first body 211 along a second direction. The first pin 212 can pass through the first mating hole 213 and be fixedly connected to the corresponding support beam 3. For example, the first pin 212 can pass through the corresponding support beam 3 for fixed connection, or the first pin 212 can be welded to or snapped onto the corresponding support beam 3. During the torsion test, the drive component 4 drives the support beam 3 to twist, and the support beam 3 can drive the first pin 212 to move together. In addition, along the moving direction of the drive shaft 41 (third direction), the size of the first mating hole 213 is larger than the diameter of the first pin 212. This setting allows the first pin 212 to move up and down within the first mating hole 213.

[0038] The drive assembly can be divided into two groups, each group of which can include two drive components 4. Both drive components 4 in each group can be connected to the corresponding support beam 3 to drive the corresponding support beam 3 to twist, thereby applying torque to the test piece 20 fixed on the two support beams 3 to test the torsional stiffness of the test piece 20.

[0039] It is understood that this application proposes two embodiments. In the first embodiment, the driving component group is a set, and the two support seats 2 of each set of support seats correspond to the two ends of the corresponding support beam 3. In the two support seats 2 of a set of support seats, the support seat 2 that is closer to the driving component 4 corresponding to the corresponding support beam 3 is constructed as the first support seat 21, and the support seat 2 that is farther away from the driving component 4 corresponding to the corresponding support beam 3 is constructed as the second support seat 22. It is understood that since the driving component group in the first embodiment is a set and there are four support seats 2, two driving components 4 can only correspond to two support seats 2. Therefore, the support seat 2 corresponding to the driving component 4 is constructed as the first support seat 21 so that the first support seat 21 can match the torsion of the corresponding support beam 3 (since the size of the first mating hole 213 in the first support seat 21 is larger than the diameter of the first pin 212, it will not restrict the torsion of the support beam 3). The other two support seats 2 are constructed as the second support seats 22 to support the support beam 3.

[0040] In the second embodiment, the driving component group consists of two groups, and the two support seats 2 in each group can be connected to the two ends of the corresponding support beam 3 respectively. The four driving components 4 can correspond to the four support seats 2, and each of the four support seats 2 can be constructed as a first support seat 21.

[0041] In some embodiments of this application, such as Figure 1 As shown, the first support base 21 also includes a limiting member 214, a portion of which extends into the first mating hole 213. The size of the limiting member 214 extending into the first mating hole 213 is adjustable, and the first pin 212 is provided with limiting members 214 on both the upper and lower sides.

[0042] The limiting member 214 can be constructed as a pin, bolt, etc. Located on both sides of the first pin 212, the limiting member 214 restricts the maximum movement of the support beam 3. Specifically, when the end of the limiting member 214 within the first mating hole 213 abuts against the first pin 212, the movement of the support beam 3 in that direction reaches its maximum value. The size of the limiting member 214 extending into the first mating hole 213 is adjustable. This configuration allows adjustment of the position of the end of the limiting member 214 within the first mating hole 213, thereby adjusting the maximum movement of the support beam 3 and consequently, the torque applied by the testing device 10 to the test piece 20. This allows for adjustment of the test intensity according to different test requirements of the test piece 20, improving the adaptability and reliability of the testing device 10. Furthermore, by setting the limiting member 214, test noise data caused by overload can be reduced, improving the accuracy of the test results.

[0043] In some embodiments of this application, such as Figure 2 As shown, the first body 211 has an assembly hole that communicates with the first mating hole 213. Assembly holes are formed on both the upper and lower sides of the first mating hole 213. The limiting member 214 corresponds to the assembly hole and has an external thread. The assembly hole has an internal thread, and the limiting member 214 is threadedly engaged with the corresponding assembly hole.

[0044] The first body 211 may have mounting holes, which are through holes extending in a third direction. Mounting holes are also formed on both the upper and lower sides of the first mating hole 213. A limiting member 214 corresponds one-to-one with each mounting hole. The mounting hole may have internal threads, and the limiting member 214 may have external threads. The limiting member 214 can be threaded into the corresponding mounting hole. The limiting member 214 can be screwed into the mounting hole and partially extends into the first mating hole 213 to adjust the maximum movement of the support beam 3, thereby adjusting the torque applied by the testing device 10 to the test piece 20. This allows for adjustment of the test intensity according to the different test requirements of the test piece 20. By forming mounting holes in the first body 211 and threading the mounting holes with the corresponding limiting members 214, the size of the limiting member 214 extending into the first mating hole 213 can be easily adjusted, thus facilitating the adjustment of the maximum movement of the support beam 3.

[0045] As a specific embodiment of this application, such as Figure 1 and Figure 3As shown, the first body 211 can have two mounting holes on both the upper and lower sides (four in total). All four mounting holes are connected to the first mating hole 213. There can be four limiting members 214. Each limiting member 214 can have an external thread, and each mounting hole can have an internal thread. Each limiting member 214 can be threaded with the corresponding mounting hole. By setting multiple one-to-one corresponding mounting holes and limiting members 214, it is convenient to adjust the maximum movement of the support beam 3 to adjust the torque applied by the test device 10 to the test piece 20, so as to achieve the effect of adjusting the test intensity according to the different test requirements of the test piece 20.

[0046] In some embodiments of this application, such as Figure 2 As shown, the test device 10 also includes: a transmission component 7 and a third pin 8. The number of transmission components 7, the third pin 8 and the driving component 4 are the same and correspond one-to-one. The end of the support beam 3 that mates with the driving component 4 has a third mating hole 31. The transmission component 7 passes through the third mating hole 31, and the third pin 8 passes through the corresponding support beam 3 and the corresponding transmission component 7. At least part of the surface of the transmission component 7 that mates with the third mating hole 31 is an arc surface.

[0047] The support beam 3 and the drive member 4 have a third mating hole 31 at one end. The third mating hole 31 extends along a third direction and can penetrate the support beam 3 along the third direction. The transmission member 7 can pass through the third mating hole 31. The transmission member 7 has two opposite ends. Taking the third direction as the up and down direction as an example, the upper end of the transmission member 7 can be connected to the lower end of the drive shaft 41 of the drive member 4. The transmission member 7 can have a through hole that mates with the third pin 8. The through hole extends along a second direction. The third pin 8 can pass through the through hole of the transmission member 7 and be fixedly connected to the inner wall of the third mating hole 31.

[0048] As some embodiments of this application, such as Figure 3 As shown, the support beam 3 can have a connecting hole 32 that mates with the third pin 8. The connecting hole 32 can penetrate the support beam 3 along the second direction. The cross-section of the connecting hole 32 can be constructed as an ellipse, a near-ellipse, or an oblong shape. For "oblong," it should be understood as a shape constructed by replacing the two short sides of a rectangle with arcs. This arrangement can absorb the displacement along the first direction generated when the support beam 3 rotates around the second support base 22, thereby reducing the risk of the third pin 8 being restricted and jammed by the connecting hole 32 when the support beam 3 rotates. The number of transmission components 7, the third pin 8, and the driving components 4 are the same and correspond one-to-one. The driving components 4 can drive the transmission components 7 to move, which in turn drives the support beam 3 to twist through the third pin 8.

[0049] At least a portion of the surface of the transmission component 7 that mates with the third mating hole 31 can be constructed as an arc surface, such as a circular arc surface or an elliptical arc surface. Preferably, at least a portion of the surface of the transmission component 7 that mates with the third mating hole 31 can be constructed as a circular arc surface. When the driving component 4 drives the transmission component 7 to move, the transmission component 7 can drive the support beam 3 to rotate around the second support seat 22 via the third pin 8. It is understood that during the rotation of the support beam 3, there will be relative rotation between the transmission component 7 and the third mating hole 31. By constructing at least a portion of the surface of the transmission component 7 that mates with the third mating hole 31 as an arc surface, the risk of surface friction or even jamming between the transmission component 7 and the third mating hole 31 can be reduced when the transmission component 7 rotates relative to the third mating hole 31, thereby improving the smoothness of the movement of the transmission component 7 and improving the reliability of the test device 10.

[0050] In some embodiments of this application, such as Figure 2 As shown, the surface of the transmission component 7 that mates with the third mating hole 31 surrounds the third pin 8.

[0051] Among them, the surface of the transmission component 7 that mates with the third mating hole 31 can surround the third pin 8, and the surface of the transmission component 7 that mates with the third mating hole 31 can surround the third pin 8 for a full circumference (360° complete surround), or the surface of the transmission component 7 that mates with the third mating hole 31 can surround part of the structure of the third pin 8 (e.g., 300° surround, 270° surround, etc.), which can be reasonably set according to the actual situation.

[0052] The central axis of the transmission component 7 when it rotates can coincide with the central axis of the third pin 8. This arrangement makes the rotation smoother. By making the surface of the transmission component 7 that mates with the third mating hole 31 surround the third pin 8, the risk of the transmission component 7 and the third mating hole 31 getting stuck can be effectively reduced.

[0053] As some embodiments of this application, such as Figure 2 As shown, at least a portion of the inner wall of the third mating hole 31 may have a gap with the surface of the transmission member 7. By setting this gap, the smoothness of the movement and rotation of the third mating hole 31 relative to the transmission member 7 can be improved, the risk of interference between the transmission member 7 and the inner wall of the third mating hole 31 can be reduced, and the risk of noise generated by friction between the transmission member 7 and the inner wall of the third mating hole 31 can be reduced, thereby improving the reliability of the test device 10.

[0054] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the test device 10 also includes a drive support 6, which is located on the base 1. The number of drive supports 6 and drive components 4 are the same and correspond one-to-one. The drive components 4 are located on the corresponding drive supports 6.

[0055] Among them, the drive support 6 can be provided on the base 1. As some embodiments of this application, the drive support 6 can be bolted to the through hole on the base 1. The number of drive supports 6 and drive components 4 are the same and correspond one-to-one. The drive component 4 can be provided on the corresponding drive support 6. The drive support 6 is used to support the drive component 4 so that the drive shaft 41 of the drive component 4 can move closer to or away from the base 1, thereby driving the corresponding support beam 3 to twist. By providing the drive support 6, it is convenient to install the drive component 4 and raise the drive component 4 so that the drive shaft 41 of the drive component 4 can cooperate with the support beam 3, which helps to reduce the assembly difficulty.

[0056] In some embodiments of this application, the test apparatus 10 further includes a vibration table (not shown in the figure), and a base 1 is disposed on the vibration table.

[0057] The test apparatus 10 may further include a vibration table, which can be connected to the base 1. Fasteners (e.g., bolts, screws, etc.) can be inserted through through holes in the base 1 and corresponding mating through holes in the vibration table to screw the base 1 to the vibration table. The base 1 can be positioned above the vibration table, which can generate vibration. The generated vibration can act on the test piece 20 fixed to the support beam 3 to simulate the vibration transmitted to battery-related components (battery pack, battery module, battery tray, etc.) under actual road conditions. By setting up a vibration table, the test apparatus 10 can perform vibration tests, torsional stiffness tests, and combined vibration tests, thereby expanding the applicability of the test apparatus 10 and improving the reliability of the test results.

[0058] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the test apparatus 10 further includes: a lifting lug 9, which is disposed on the base 1; and / or, the base 1 is formed with a mounting hole, and the support 2 is fitted with the mounting hole to be disposed on the base 1.

[0059] The lifting lug 9 can be constructed as a ring-shaped workpiece and can be disposed on the base 1. In some embodiments of this application, the lifting lug 9 can be integrally formed with the base 1. In some embodiments of this application, the lifting lug 9 can be screwed into the mounting hole of the base 1. In the process of installing the base 1 on the vibration table, a corresponding lifting device can be fixed to the lifting lug 9 to move the base 1 to the corresponding position on the vibration table. By setting the lifting lug 9, the convenience of installing the test device 10 can be improved.

[0060] The base 1 has multiple mounting holes, which may include multiple first mounting holes 11 and multiple second mounting holes 12. The lifting lug 9, drive support 6, and support base 2 can all be screwed to the first mounting holes 11 using fasteners (e.g., bolts, screws, etc.). The vibration table can be screwed to the second mounting holes 12 using fasteners (e.g., bolts, screws, etc.). As some embodiments of this application, the distance between two adjacent second mounting holes 12 along the first or second direction can be 100 mm. This arrangement is suitable for fixing to a standard test bench, thereby improving the adaptability of the base 1.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0063] In the description of this invention, "a plurality of" means two or more.

[0064] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0065] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A test apparatus (10), characterized in that, include: Base (1); Two sets of support bases, each set of the support bases includes two support bases (2) spaced apart along a first direction, the support bases (2) are disposed on the base (1), and the two sets of the support bases are spaced apart along a second direction; Two support beams (3), two sets of support bases are respectively used to support the two support beams (3), the two support beams (3) are parallel and arranged facing each other along the second direction, and the two support beams (3) are suitable for assembling with the test piece (20); The driving component assembly includes two driving components (4), and the driving shafts (41) of the two driving components (4) are respectively connected to the two ends of the two support beams (3) that are misaligned along the second direction. The driving shafts (41) of the driving components (4) can move closer to or further away from the base (1).

2. The test apparatus (10) according to claim 1, characterized in that, The drive components are grouped together, and the two support seats (2) of each support seat group correspond to the two ends of the corresponding support beam (3), wherein, In a set of support seats, the support seat (2) that is closer to the drive member (4) corresponding to the support beam (3) is constructed as the first support seat (21), and the support seat (2) that is farther away from the drive member (4) corresponding to the support beam (3) is constructed as the second support seat (22). The first support base (21) includes: a first base body (211) and a first pin (212). The first base body (211) has a first mating hole (213). The first pin (212) passes through the first mating hole (213) and is connected to the corresponding support beam (3). Along the moving direction of the drive shaft (41), the size of the first mating hole (213) is larger than the diameter of the first pin (212). The second support base (22) includes: a second base body (221) and a second pin (222). The second base body (221) has a second mating hole (223). The second pin (222) passes through the second mating hole (223) and is connected to the corresponding support beam (3). The diameter of the second mating hole (223) is adapted to the diameter of the second pin (222) so that the support beam (3) is rotatably disposed on the second support base (22).

3. The test apparatus (10) according to claim 1, characterized in that, The drive assembly consists of two groups. The two support seats (2) of each support seat group correspond to the two ends of the corresponding support beam (3). The support seat (2) is constructed as a first support seat (21). The first support seat (21) includes: a first seat body (211) and a first pin (212). The first seat body (211) has a first mating hole (213). The first pin (212) passes through the first mating hole (213) and is connected to the corresponding support beam (3). Along the moving direction of the drive shaft (41), the size of the first mating hole (213) is larger than the diameter of the first pin (212).

4. The test apparatus (10) according to claim 2 or 3, characterized in that, The first support base (21) further includes a limiting member (214), a portion of which extends into the first mating hole (213). The size of the limiting member (214) extending into the first mating hole (213) is adjustable, and the limiting member (214) is provided on both the upper and lower sides of the first pin (212).

5. The test apparatus (10) according to claim 4, characterized in that, The first body (211) has an assembly hole, which is connected to the first mating hole (213). The first mating hole (213) has assembly holes on both the upper and lower sides. The limiting member (214) corresponds to the assembly hole and has an external thread. The assembly hole has an internal thread. The limiting member (214) is threadedly engaged with the corresponding assembly hole.

6. The test apparatus (10) according to claim 1, characterized in that, Also includes: The transmission component (7), the third pin (8), and the driving component (4) are of the same number and correspond one-to-one. The support beam (3) has a third mating hole (31) at one end that mates with the driving component (4). The transmission component (7) passes through the third mating hole (31), and the third pin (8) passes through the corresponding support beam (3) and the corresponding transmission component (7). At least part of the surface of the transmission component (7) that mates with the third mating hole (31) is constructed as an arc surface.

7. The test apparatus (10) according to claim 6, characterized in that, The surface of the transmission component (7) that mates with the third mating hole (31) surrounds the third pin (8).

8. The test apparatus (10) according to claim 1, characterized in that, Also includes: A drive support (6) is provided on the base (1). The number of drive supports (6) and drive components (4) are the same and correspond one-to-one. The drive components (4) are provided on the corresponding drive supports (6).

9. The test apparatus (10) according to claim 1, characterized in that, Also includes: A vibration table, wherein the base (1) is disposed on the vibration table.

10. The test apparatus (10) according to claim 1, characterized in that, Also includes: Lifting lug (9), the lifting lug (9) is provided on the base (1); And / or, the base (1) is formed with a mounting hole, and the support (2) is fitted with the mounting hole to be disposed on the base (1).

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