A test fixture and test system

Abstract

This application discloses a testing fixture and testing system, belonging to the field of vehicle testing technology. The testing fixture includes a support base, a contoured vehicle frame, and two contoured mounting brackets. The support base is configured to be mounted on a vibration device. The contoured vehicle frame is fixedly connected to the side of the support base away from the vibration device, and the contoured vehicle frame includes two first longitudinal beams arranged opposite each other in a first direction, and a plurality of crossbeams spaced apart along a second direction; the two first longitudinal beams are fixedly connected to both ends of each crossbeam; the first direction and the second direction intersect. The two contoured mounting brackets correspond one-to-one with the two first longitudinal beams, each contoured mounting bracket is connected to its corresponding first longitudinal beam, and the side of each contoured mounting bracket away from its corresponding first longitudinal beam is configured to connect to the power battery under test. The testing fixture provides a testing environment for the power battery under test that is more closely matched to the overall vehicle environment, thereby improving the accuracy of vibration testing of the power battery under test.

Description

Technical Field

[0001] This application relates to the field of vehicle testing technology, and in particular to a testing fixture and testing system. Background Technology

[0002] Vibration testing of power batteries simulates various vibration environments that vehicles may encounter during driving, and verifies the structural strength of the battery, the stability of the connectors, and the fatigue resistance of internal components. It is a key step in verifying the safety and reliability of batteries in vehicle use.

[0003] Currently, the vibration testing fixture includes a base and multiple support frames. These support frames are spaced apart on the base. Each support frame includes a column and a plate. One end of the column is connected to the base, and the other end is connected to the plate. The plate has suspension holes through which the battery under test is connected to the plate. Thus, the battery is suspended from each support frame via the plate and supported by all the support frames.

[0004] However, power batteries are typically fixed to the vehicle's frame via mounting brackets. The structure of the aforementioned vibration testing fixture is clearly incompatible with the vehicle environment, thus compromising the accuracy of vibration testing. Utility Model Content

[0005] This application provides a testing fixture. It solves the problem in the prior art where the testing fixture is incompatible with the vehicle environment, thus affecting the accuracy of vibration testing. The technical solution is as follows:

[0006] On the one hand, a test fixture is provided, including: a support base, a contoured frame, and two contoured mounting brackets;

[0007] The support base is configured to be mounted on the vibrating equipment;

[0008] The contoured frame is fixedly connected to the support seat on the side away from the vibration device, and the contoured frame includes: two first longitudinal beams arranged opposite each other in a first direction, and a plurality of crossbeams spaced apart along a second direction; the two first longitudinal beams are fixedly connected to both ends of each crossbeam; the first direction and the second direction intersect.

[0009] The two contoured mounting brackets correspond one-to-one with the two first longitudinal beams. Each contoured mounting bracket is connected to the corresponding first longitudinal beam. The side of each contoured mounting bracket away from the corresponding first longitudinal beam is configured to be connected to the power battery under test.

[0010] In some possible implementations, each of the contour-following mounts includes: a second longitudinal beam and multiple mount connectors;

[0011] The plurality of mounting connectors are spaced apart along the second direction, and the first end of each mounting connector is connected to the second longitudinal beam, and the second end of each mounting connector is connected to the first longitudinal beam; the second longitudinal beam is configured to connect the power battery under test.

[0012] In some possible implementations, each of the first longitudinal beams has a plurality of first connecting portions on the side opposite to the other first longitudinal beam; the plurality of first connecting portions correspond one-to-one with the plurality of mounting connectors, and the first end of each mounting connector is connected to the corresponding first connecting portion.

[0013] In some possible implementations, the test fixture further includes a plurality of first fasteners for connecting the mounting connector and the first connecting portion.

[0014] In some possible implementations, the second longitudinal beam has a plurality of second connecting portions on the side near the first longitudinal beam; the plurality of second connecting portions correspond one-to-one with the plurality of mounting connectors, and the second end of each mounting connector is connected to the corresponding second connecting portion.

[0015] In some possible implementations, the test fixture further includes a plurality of second fasteners for connecting the mounting connector and the second connection portion.

[0016] In some possible implementations, the second longitudinal beam has multiple connecting holes, the axes of which are parallel to the first direction;

[0017] The test fixture further includes a plurality of third fasteners corresponding one-to-one with the plurality of connection holes, each of the third fasteners being used to pass through the corresponding connection hole and connect to the power battery under test.

[0018] In some possible implementations, the support base includes: a plurality of supports; the plurality of supports are arranged in at least two columns in the first direction and in at least two rows in the second direction;

[0019] The first end of each of the supports is connected to the contoured frame, and the second end of each of the supports is configured to be installed on the same vibration plane of the vibration device.

[0020] In some possible implementations, the two outermost crossbeams in the second direction have a plurality of extension posts, which are portions of the crossbeams that protrude from the first longitudinal beam in the first direction;

[0021] The plurality of extension columns correspond one-to-one with the plurality of supports, and the first end of each support is connected to the corresponding extension column.

[0022] On the other hand, a testing system is provided, comprising: a vibration device, and a testing fixture mounted on the vibration device, the testing fixture being the aforementioned testing fixture.

[0023] The beneficial effects of the technical solutions provided in this application include at least the following:

[0024] The contoured frame has the same structure and shape as the vehicle's frame, and the contoured mounting bracket has the same structure and shape as the vehicle's mounting support bracket. Furthermore, the assembly method in which the tested power battery is connected to the contoured frame via two contoured mounting brackets is also consistent with the assembly method of the power battery on the vehicle's frame. This gives the test fixture the same mechanical properties as the structure (frame and mounting support bracket) used to mount and support the power battery on the vehicle. The test environment provided by the test fixture for the tested power battery is more closely matched to the overall vehicle environment, thereby improving the accuracy of vibration testing of the tested power battery. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a power battery in related technologies.

[0027] Figure 2 This is a schematic diagram of the structure in related technologies where the power battery is mounted on the vehicle frame.

[0028] Figure 3 This is a schematic diagram of the structure of the test system provided in the embodiments of this application.

[0029] Figure 4 This is a schematic diagram of the structure of the power battery under test installed on the test system according to an embodiment of this application.

[0030] Figure 5 This is a schematic diagram of the test fixture provided in the embodiments of this application.

[0031] Figure 6 This is a schematic diagram of the structure of the power battery under test installed on the test fixture according to an embodiment of this application.

[0032] Figure 7 yes Figure 6 Enlarged diagram of point A in the middle.

[0033] Figure label:

[0034] 1. Power battery; 2. Frame; 21. Longitudinal beam; 22. Transverse beam; 3. Mounting support frame;

[0035] 100. Test fixture; 101. Support base; 102. Contouring frame; 103. Contouring mount; 104. First longitudinal beam; 105. Crossbeam; 106. Second longitudinal beam; 107. Mounting connector; 108. First connecting part; 110. First fastener; 111. Second connecting part; 113. Second fastener; 114. Mounting seat body; 115. Elastic pad; 116. Connecting hole; 117. Rib plate; 118. Support; 119. Base plate; 120. Column; 121. Top plate; 122. Extension column;

[0036] 200. Vibration equipment; 201. Vibration table;

[0037] 300. The power battery under test;

[0038] X, the first direction; Y, the second direction. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0040] Figure 1 This is a schematic diagram of the structure of a power battery in related technologies. Figure 2 This is a schematic diagram of a power battery mounted on a vehicle frame in related technologies. Please refer to it. Figure 1 and Figure 2 The vehicle frame 2 includes two longitudinal beams 21 and multiple transverse beams 22. The power battery 1 is mounted on the frame 2 via two mounting brackets 3, thus enabling the power battery 1 to be installed on the vehicle. When the vehicle is parked horizontally, the power battery 1 is connected to the lower end of each mounting bracket 3, and the upper end of each mounting bracket 3 is connected to the longitudinal beams 21 of the frame 2.

[0041] This application provides a testing system. The testing system can be used to simulate the vibration environment that the tested power battery may encounter while the vehicle is in motion, thereby verifying various performance characteristics of the tested power battery.

[0042] Figure 3 This is a schematic diagram of the structure of the test system provided in the embodiments of this application. Figure 4 This is a schematic diagram of the structure of the power battery under test installed on the test system according to an embodiment of this application. Please refer to... Figure 3 and Figure 4The testing system includes a vibration device 200 and a testing fixture 100 mounted on the vibration device 200. The vibration device 200, also known as a vibration generator or vibration exciter, is used to generate vibration excitation. The testing fixture 100 is used to support the power battery 300 under test.

[0043] like Figure 4 As shown, the power battery 300 under test is mounted on the test fixture 100. When the test system is running, the vibration device 200 acts as an excitation source, vibrating the test fixture 100 to cause it to vibrate, thus simulating the vibration of the power battery 300 under test during vehicle operation.

[0044] Figure 5 This is a schematic diagram of the test fixture provided in the embodiments of this application. Figure 6 This is a schematic diagram of the structure of the power battery under test installed on the test fixture, as provided in an embodiment of this application. Figures 4-6 As shown in the figure, this application embodiment also provides a test fixture 100. This test fixture 100 can be used as the test fixture 100 of the above-mentioned test system, thereby making the vibration environment provided by the above-mentioned test system more consistent with the actual vehicle environment.

[0045] like Figures 4-6 As shown, the test fixture 100 includes: a support base 101, a contoured frame 102, and two contoured mounting brackets 103. The contoured frame 102 can be coupled with... Figure 2 The actual frame 2 has a similar structure and shape, and the contoured mounting bracket 103 can be used with... Figure 2 The structure and shape of the actual mounting support frame 3 are similar.

[0046] like Figure 3 As shown, the support base 101 can be configured to be mounted on the vibration device 200. In this way, the vibration excitation generated by the vibration device 200 acts on the test fixture 100 through the support base 101. The support base 101 can be detachably fixedly connected to the vibration device 200, for example, by fastening the support base 101 to the table surface of the vibration device 200 with fasteners (such as bolts). Alternatively, the support base 101 can be integrally connected to the vibration device 200, for example, by integrally forming or welding the support base 101 to the table surface of the vibration device 200.

[0047] like Figure 3 and Figure 5As shown, the contouring frame 102 can be fixedly connected to the support base 101 on the side opposite to the vibration device 200. The vibration excitation generated by the vibration device 200 is transmitted to the contouring frame 102 through the support base 101, thereby simulating vibration in the contouring frame 102. The connection between the contouring frame 102 and the support base 101 can be a detachable connection, such as a bolted connection, which facilitates disassembly and maintenance. Alternatively, the connection between the contouring frame 102 and the support base 101 can be an integral connection, thus reducing the impact of the connection between the contouring frame 102 and the support base 101 on vibration transmission.

[0048] like Figure 5 As shown, the contoured frame 102 may include two first longitudinal beams 104 arranged opposite each other in a first direction X, and a plurality of crossbeams 105 spaced apart along a second direction Y. The two first longitudinal beams 104 are fixedly connected to both ends of each crossbeam 105. The first direction X and the second direction Y intersect. Thus, the two first longitudinal beams 104 are similar to... Figure 2 The two longitudinal beams 21 and multiple transverse beams 105 of the upper frame 2 of the vehicle are similar to those in the middle vehicle. Figure 2 Multiple transverse beams 22 of the upper frame 2 of the vehicle, thereby enabling the contoured frame 102 to... Figure 2 The structure and shape of the frame 2 on the vehicle are consistent. It is understood that the angle between the first direction X and the second direction Y can be adaptively adjusted according to the arrangement of the longitudinal beams 21 and the transverse beams 22 on the vehicle, so that the contoured frame 102 is the same as the actual frame 2 on the vehicle. No specific limitation is made here.

[0049] like Figure 5 As shown, two contoured mounting brackets 103 correspond one-to-one with two first longitudinal beams 104. Each contoured mounting bracket 103 is connected to its corresponding first longitudinal beam 104. The side of each contoured mounting bracket 103 facing away from its corresponding first longitudinal beam 104 is configured to connect to the power battery 300 under test. Thus, the power battery 300 under test is connected to the contoured frame 102 via the two contoured mounting brackets 103 in this assembly method. Figure 2 The assembly method of the power battery 1 being connected to the vehicle frame 2 via the mounting support frame 3 is the same.

[0050] In some embodiments, the test fixture 100 is placed horizontally. The lower end of the support base 101 is mounted on the vibration device 200. The contoured frame 102 is fixedly connected to the upper end of the support base 101. The upper end of each contoured mounting bracket 103 is connected to the corresponding first longitudinal beam 104, and the lower end of each contoured mounting bracket 103 is connected to the power battery 300 under test.

[0051] In some embodiments, the dimensions, materials, and / or manufacturing processes of the contoured frame 102 can be the same as those of the actual frame 2, and the dimensions, materials, and / or manufacturing processes of the contoured mount 103 can be the same as those of the actual mount support 3. This makes the testing environment provided by the testing fixture 100 more consistent with the actual vehicle operating environment, which is beneficial for improving testing accuracy.

[0052] In some embodiments, the power battery 300 under test is located between two contoured mounting brackets 103. That is, the power battery 300 under test is enveloped on both sides of the two contoured mounting brackets 103 in the first direction X. In this arrangement, the test fixture 100 can simulate the assembly method of the power battery 1 being enveloped between the two mounting brackets 3.

[0053] In summary, the test fixture provided in this application embodiment has a contoured frame with the same structure and shape as the vehicle's frame, and a contoured mounting bracket with the same structure and shape as the vehicle's mounting support bracket. Furthermore, the assembly method in which the power battery under test is connected to the contoured frame via two contoured mounting brackets is also consistent with the assembly method of the power battery on the vehicle's frame. This results in the test fixture possessing the same mechanical properties as the structure (frame and mounting support bracket) used to mount and support the power battery on the vehicle. The test environment provided by the test fixture for the power battery under test more closely matches the actual vehicle environment, thereby improving the accuracy of vibration testing of the power battery under test.

[0054] Optionally, each contoured mounting bracket 103 includes a second longitudinal beam 106 and a plurality of mounting connectors 107. The plurality of mounting connectors 107 are spaced apart along a second direction Y, with the first end of each mounting connector 107 connected to the second longitudinal beam 106 and the second end of each mounting connector 107 connected to a first longitudinal beam 104. The second longitudinal beam 106 is configured to connect to the power battery 300 under test. Here, both the second longitudinal beam 106 and the first longitudinal beam 104 extend along the second direction Y. In this way, the test fixture 100 can match the test environment of a mounting support frame 3 with the same structure and shape as the contoured mounting bracket 103.

[0055] In other words, the second longitudinal beam 106 is connected to the power battery 300 under test, and the second longitudinal beam 106 is connected to the first longitudinal beam 104 through multiple mounting connectors 107. In this way, the second longitudinal beam 106 can connect to the power battery 300 under test at various points in the second direction Y, ensuring stable connection and avoiding stress concentration.

[0056] It should be noted that the specific structure and shape of the contour-following mounting frame 103 can be adjusted according to the adaptability of the structure and shape of the mounting support frame 3, so that the contour-following mounting frame 103 has the same structure and shape as the mounting support frame 3. Thus, the contour-following mounting frame 103 has the same mechanical properties as the mounting support frame 3.

[0057] Figure 7 yes Figure 6 An enlarged schematic diagram of the structure at point A. (See diagram below.) Figure 6 and Figure 7 As shown, optionally, each first longitudinal beam 104 has multiple first connecting portions 108 on the side opposite to the other first longitudinal beam 104; the multiple first connecting portions 108 correspond one-to-one with multiple mounting connectors 107, and the first end of each mounting connector 107 is connected to the corresponding first connecting portion 108. In this way, the mounting connectors 107 do not occupy the space between the two first longitudinal beams 104; the assembly of the mounting connectors 107 can be performed on both sides of the contoured frame 102 in the first direction X, reducing the assembly difficulty and improving the assembly efficiency.

[0058] In some embodiments, the first connecting portion 108 can be a boss protruding from the first longitudinal beam 104 along the first direction X, and the first end of the mounting connector 107 can be fitted with the boss. The boss can have a relatively flat surface, and the first end of the mounting connector 107 can be fitted with this relatively flat surface. Compared to manufacturing a first longitudinal beam 104 with a relatively high overall flatness, it is less difficult to manufacture a boss with a relatively flat surface. Therefore, by providing a boss on the first longitudinal beam 104 and fitting the first end of the mounting connector 107 with the surface of the boss, the manufacturing difficulty of the first longitudinal beam 104 can be reduced.

[0059] Optionally, the test fixture 100 also includes a plurality of first fasteners 110 for connecting the mounting connector 107 and the first connecting portion 108. The plurality of first fasteners 110 can ensure the reliability of the connection between the mounting connector 107 and the first connecting portion 108. Moreover, this connection method is consistent with the connection method of the mounting support frame 3 and the longitudinal beam 21 on the vehicle, thereby matching the actual vehicle environment.

[0060] In some embodiments, the first fastener 110 can be a bolt. The mounting connector 107 has a first opening, and the first connecting portion 108 has a threaded hole. The first fastener 110 passes through the first opening and is threadedly connected to the threaded hole, thereby fixing the mounting connector 107 to the first longitudinal beam 104. The mounting connector 107 and the first connecting portion 108 are connected by bolts, which matches the actual vehicle environment and is convenient for disassembly and assembly.

[0061] Continue to refer to Figure 6 and Figure 7Optionally, the second longitudinal beam 106 has a plurality of second connecting portions 111 on the side near the first longitudinal beam 104; the plurality of second connecting portions 111 correspond one-to-one with a plurality of mounting connectors 107, and the second end of each mounting connector 107 is connected to the corresponding second connecting portion 111. That is, the second connecting portion 111 is located on the side of the second longitudinal beam 106 near the first longitudinal beam 104 and is connected to the mounting connector 107.

[0062] Here, the power battery under test 300 is located between the two second longitudinal beams 106, and the two sides of the power battery under test 300 in the first direction X are respectively connected to the opposite sides of the two second longitudinal beams 106. In this way, the mounting connector 107 and the power battery under test 300 are respectively connected to different sides of the second longitudinal beams 106, avoiding assembly interference.

[0063] Optionally, such as Figure 7 As shown, the test fixture 100 also includes a plurality of second fasteners 113 for connecting the mounting connector 107 and the second connecting part 111. The plurality of second fasteners 113 can ensure the reliability of the connection between the mounting connector 107 and the second connecting part 111. Moreover, this connection method is consistent with the assembly method of the mounting support frame 3 on the vehicle, thereby matching the actual vehicle environment.

[0064] In some embodiments, the second fastener 113 may include a bolt and a nut. The mounting connector 107 has a first through hole, and the first connecting portion 108 has a second through hole. The bolt passes through the first and second through holes and is threadedly connected to the nut, thereby fixing the mounting connector 107 to the second longitudinal beam 106. Connecting the mounting connector 107 and the second connecting portion 111 with bolts and nuts ensures a reliable connection, matches the actual vehicle environment, and facilitates easy assembly and disassembly.

[0065] In some embodiments, such as Figure 7 As shown, the mounting connector 107 includes a mounting base 114 and an elastic pad 115. The mounting base 114 has a groove on the side opposite to the first connecting portion 108, and the elastic pad 115 is located within the groove. A threaded first fastener 110 passes sequentially through the elastic pad 115 and the mounting base 114, and is connected to the first connecting portion 108. The elastic pad helps prevent the first fastener 110 from loosening. A second fastener 113 passes through the mounting base 114 near the second longitudinal beam 106 and is connected to the second connecting portion 111.

[0066] Optionally, such as Figure 7As shown, the second longitudinal beam 106 has multiple connecting holes 116, the axes of which are parallel to the first direction X. The test fixture 100 also includes multiple third fasteners (not shown in the figure) corresponding one-to-one with the multiple connecting holes 116. Each third fastener is used to pass through the corresponding connecting hole 116 and connect to the power battery 300 under test. In this way, one side of the second longitudinal beam 106 in the first direction X and one side of the power battery 300 under test in the first direction X are fastened together by the multiple third fasteners.

[0067] In some embodiments, the third fastener may be a bolt. The power battery under test 300 has a threaded hole on one side in the first direction X. The bolt passes through the connecting hole 116 and is threaded into the threaded hole, thereby fixing the power battery under test 300 to the second longitudinal beam 106. The connection between the power battery under test 300 and the second longitudinal beam 106 by bolts is reliable, matches the actual vehicle environment, and is convenient for disassembly and assembly.

[0068] In some embodiments, such as Figure 7 As shown, the second longitudinal beam 106 is a channel beam, with its bottom wall in contact with the tested power battery 300. The bottom wall of the channel beam has multiple connecting holes 116. The side wall of the channel beam near the first longitudinal beam 104 has multiple first connecting portions 108. To enhance the rigidity and strength of the second longitudinal beam 106, ribs 117 can be provided inside the channel beam. The ribs 117 are located in the corresponding areas of the first connecting portions 108, and both ends of the ribs 117 connect to the two side walls of the channel beam.

[0069] Optionally, such as Figure 5 and Figure 6 As shown, the support base 101 includes a plurality of supports 118. The plurality of supports 118 are arranged in at least two columns in the first direction X and at least two rows in the second direction Y. The first end of each support 118 is connected to the contoured frame 102, and the second end of each support 118 is configured to be mounted on the same vibration plane of the vibration device 200. Thus, the plurality of supports 118 distributed in rows and columns occupy little space and have good load-bearing capacity, thereby connecting the contoured frame 102 to the same vibration plane.

[0070] Optionally, such as Figure 6 As shown, the support 118 includes a base plate 119, a column 120, and a top plate 121. The first end of the column 120 is disposed on the base plate 119, and the top plate 121 is disposed on the second end of the column 120. The contoured frame 102 is disposed on the top plate 121, and the base plate 119 is fixedly connected to the vibration plane of the vibration device 200. The support 118 has a simple structure; the base plates 119 of multiple supports 118 together form a support surface that mates with the vibration plane, and the top plates 121 of multiple supports 118 together form a support surface that supports the contoured frame 102.

[0071] In some embodiments, both the base plate 119 and the top plate 121 are welded to the column 120, and the welded connection has high strength.

[0072] In some embodiments, the areas of the base plate 119 and the top plate 121 are both larger than the end face of the column 120. This results in a larger contact area between the contoured frame 102 and the support 118, and between the support 118 and the vibration device 200.

[0073] In some embodiments, the base plate 119 is fixedly connected to the vibration plane of the vibration device 200 by fasteners such as bolts.

[0074] Optionally, such as Figure 6 As shown, the two outermost crossbeams 105 in the second direction Y have multiple extension posts 122. Each extension post 122 is a portion of the crossbeam 105 that protrudes from the first longitudinal beam 104 in the first direction X. Each extension post 122 corresponds one-to-one with a plurality of supports 118, with the first end of each support 118 connected to the corresponding extension post 122. Thus, by using the portion of the crossbeam 105 protruding from the first longitudinal beam 104 as the extension post 122 and installing it on the support 118, the contour frame 102 is mounted on the support base 101.

[0075] In some embodiments, the first longitudinal beam 104 has through holes corresponding one-to-one with the extension posts 122, the through holes extending along a first direction X, and the crossbeam 105 passes through the through holes to be staggered with the first longitudinal beam 104, protruding from one side of the first longitudinal beam 104 away from the other. The crossbeam 105 may be welded to the first longitudinal beam 104 at the through holes.

[0076] like Figure 6 As shown, in some embodiments, each end of the two crossbeams 105 extends an extension post 122, and the two crossbeams 105 have a total of four extension posts 122. Correspondingly, the supports 118 may also have four.

[0077] like Figure 6 As shown, in some embodiments, one end of one of the multiple crossbeams 105 in the second direction Y is connected to one end of each of the two first longitudinal beams 104 in the second direction Y; the other end of one of the multiple crossbeams 105 in the second direction Y is connected to the other end of each of the two first longitudinal beams 104 in the second direction Y. Thus, the contoured frame 102 has good structural strength; moreover, the extension columns 122 and corresponding supports 118 are distributed at the four corners of the contoured frame 102, avoiding structural interference with the contoured mounting frame 103.

[0078] In summary, the test fixture provided in this application embodiment has a contoured frame with the same structure and shape as the vehicle's frame, and a contoured mounting bracket with the same structure and shape as the vehicle's mounting support bracket. Furthermore, the assembly method in which the power battery under test is connected to the contoured frame via two contoured mounting brackets is also consistent with the assembly method of the power battery on the vehicle's frame. This results in the test fixture possessing the same mechanical properties as the structure (frame and mounting support bracket) used to mount and support the power battery on the vehicle. The test environment provided by the test fixture for the power battery under test more closely matches the actual vehicle environment, thereby improving the accuracy of vibration testing of the power battery under test.

[0079] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0080] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A test fixture, characterized by, include: Support base (101), profile frame (102) and two profile mounting brackets (103); The support base (101) is configured to be mounted on the vibration device (200); The contoured frame (102) is fixedly connected to the support base (101) on the side away from the vibration device (200), and the contoured frame (102) includes: two first longitudinal beams (104) arranged opposite each other in a first direction (X), and a plurality of crossbeams (105) spaced apart along a second direction (Y); the two first longitudinal beams (104) are fixedly connected to both ends of each of the crossbeams (105); the first direction (X) and the second direction (Y) intersect; The two contoured mounting brackets (103) correspond one-to-one with the two first longitudinal beams (104). Each contoured mounting bracket (103) is connected to the corresponding first longitudinal beam (104). The side of each contoured mounting bracket (103) facing away from the corresponding first longitudinal beam (104) is configured to be connected to the power battery (300) under test.

2. The test fixture of claim 1, wherein, Each of the aforementioned contoured mounting brackets (103) includes: a second longitudinal beam (106) and a plurality of mounting connectors (107); The plurality of mounting connectors (107) are spaced apart along the second direction (Y), and the first end of each mounting connector (107) is connected to the second longitudinal beam (106), and the second end of each mounting connector (107) is connected to the first longitudinal beam (104); the second longitudinal beam (106) is configured to connect the power battery under test (300).

3. The test fixture of claim 2, wherein, Each of the first longitudinal beams (104) has a plurality of first connecting portions (108) on the side opposite to the other first longitudinal beam (104); the plurality of first connecting portions (108) correspond one-to-one with the plurality of mounting connectors (107), and the first end of each mounting connector (107) is connected to the corresponding first connecting portion (108).

4. The test fixture of claim 3, wherein, The test fixture (100) further includes a plurality of first fasteners (110) for connecting the mounting connector (107) and the first connecting part (108).

5. The test fixture of claim 2, wherein, The second longitudinal beam (106) has a plurality of second connecting parts (111) on the side near the first longitudinal beam (104); the plurality of second connecting parts (111) correspond one-to-one with the plurality of mounting connectors (107), and the second end of each mounting connector (107) is connected to the corresponding second connecting part (111).

6. The test fixture of claim 5, wherein, The test fixture (100) further includes a plurality of second fasteners (113) for connecting the mounting connector (107) and the second connecting part (111).

7. A test tool as claimed in any one of claims 2 to 6, wherein, The second longitudinal beam (106) has a plurality of connecting holes (116), the axis of which is parallel to the first direction (X); The test fixture (100) further includes a plurality of third fasteners corresponding one-to-one with the plurality of connection holes (116), each of the third fasteners being used to pass through the corresponding connection hole (116) and connect to the power battery (300) under test.

8. The test tool of any one of claims 1-6, wherein, The support base (101) includes: a plurality of supports (118); the plurality of supports (118) are arranged in at least two columns in the first direction (X) and in at least two rows in the second direction (Y); The first end of each of the supports (118) is connected to the contour frame (102), and the second end of each of the supports (118) is configured to be installed on the same vibration plane of the vibration device (200).

9. The test fixture of claim 8, wherein, Two of the multiple beams (105) located on the outermost side in the second direction (Y) have multiple extension posts (122), the extension posts (122) being the portion of the beam (105) that protrudes from the first longitudinal beam (104) in the first direction (X); The plurality of extension columns (122) correspond one-to-one with the plurality of supports (118), and the first end of each support (118) is connected to the corresponding extension column (122).

10. A testing system, characterized in that, include: Vibration device (200), and test fixture (100) mounted on said vibration device (200), said test fixture (100) being the test fixture (100) according to any one of claims 1-9.

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