Battery pack vibration tooling

Abstract

The utility model discloses a kind of battery pack vibration tool, battery pack vibration tool is used to be fixed in the vibration table of vibration test device by battery pack, comprising: tool main body, tool main body is used to be connected with vibration table, in the direction from top to bottom, the area of figure defined by at least partial outer contour of tool main body gradually decreases;Fixing assembly, fixing assembly is connected on tool main body, for fixing battery pack.According to the battery pack vibration tool of the utility model, by the area of figure defined by outer contour of tool main body is big on top and small on bottom, the reliability and stability of the connection between tool main body and fixing assembly and between tool main body and vibration table can be guaranteed, the weight of tool main body can be reduced, the material consumption and production manufacturing cost of battery pack vibration tool can be reduced, vibration energy can be efficiently transmitted to battery pack, energy loss is reduced, deformation caused by resonance under high-frequency vibration working condition is reduced, and the test accuracy of battery pack vibration tool is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of battery pack testing technology, and in particular to a battery pack vibration fixture. Background Technology

[0002] In related technologies, 48V battery systems are widely used in hybrid vehicles and new energy equipment. Typically, the battery pack is installed in the vehicle chassis. During vehicle operation, the battery pack is continuously subjected to road vibrations. If the battery's mounting structure or internal components become loose, it could lead to serious accidents such as short circuits or fires. Therefore, battery pack vibration testing is a critical step before the battery leaves the factory. However, existing testing fixtures suffer from problems such as resonance points at high-frequency locations, vibration transmission distortion, and inaccurate test results. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery pack vibration fixture, which can reduce the weight of the fixture body, reduce energy loss, and minimize deformation caused by resonance under high-frequency vibration conditions, thus ensuring the accuracy of test results.

[0004] A battery pack vibration fixture according to an embodiment of the present invention is used to fix a battery pack on a vibration table of a vibration testing device, comprising: a fixture body for connecting to the vibration table, wherein the area of ​​a shape defined by at least a portion of the outer contour of the fixture body gradually decreases in a top-to-bottom direction; and a fixing component connected to the fixture body for fixing the battery pack.

[0005] According to the embodiments of the present invention, the battery pack vibration fixture, by making the area of ​​the shape defined by the outer contour of the fixture body larger at the top and smaller at the bottom, can, on the one hand, ensure that the size of the upper end of the fixture body matches the size of the battery pack, and that the size of the lower end of the fixture body matches the size of the moving coil of the vibration table, thus ensuring the reliability of the connection between the fixture body and the fixed component, and between the fixture body and the vibration table, and ensuring the stability of the battery pack vibration fixture. On the other hand, it can relatively reduce the size of the lower end of the fixture body, reduce the weight of the fixture body, which is beneficial to the lightweighting of the battery pack vibration fixture, reducing the amount of material used, reducing the manufacturing cost of the battery pack vibration fixture, and can efficiently transfer vibration energy from the vibration table on the lower side to the fixed component on the upper side, and then to the battery pack, thereby reducing energy loss and avoiding deformation caused by resonance as much as possible under high-frequency vibration conditions, thus ensuring the accuracy of the test results of the battery pack vibration fixture.

[0006] In addition, the battery pack vibration fixture of this utility model may also have the following additional technical features: In some embodiments, the tooling body includes a first segment and a second segment arranged and connected in a vertical direction, the first segment being located above the second segment, and in a vertical direction, the area of ​​the graphic defined by the outer contour of the first segment remains unchanged, while the area of ​​the graphic defined by the outer contour of the second segment gradually decreases.

[0007] In some embodiments, in a cross-section perpendicular to the vertical direction, the outer contour of the first segment has a plurality of corners, at least a portion of which is formed as an arc.

[0008] In some embodiments, the tooling body is provided with connection holes for connecting to the vibration table, and the connection holes are a plurality of spaced-apart holes.

[0009] In some embodiments, the connecting hole includes a first hole segment and a second hole segment arranged and connected in the vertical direction, the first hole segment being located above the second hole segment, and the diameter of the first hole segment being larger than the diameter of the second hole segment.

[0010] In some embodiments, the vibration table is provided with a positioning column, and the tooling body is provided with a positioning hole that cooperates with the positioning column.

[0011] In some embodiments, the tooling body is provided with weight reduction holes; and / or, the outer peripheral wall of the tooling body is provided with an inwardly recessed portion.

[0012] In some embodiments, the tooling body is a single piece.

[0013] In some embodiments, the fixing component includes a fixing seat connected to the upper surface of the tooling body for fixing the battery pack, and the fixing seats are a plurality of those spaced apart along the circumferential direction of the tooling body.

[0014] In some embodiments, the fixing seat is a single piece; and / or, the tooling body is provided with a metal bushing, the metal bushing being adapted to be threadedly connected to the fixing seat.

[0015] Additional aspects and advantages of this 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 this utility model 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 perspective view of the battery pack vibration fixture according to an embodiment of the present utility model. Figure 2This is a perspective view of the battery pack vibration fixture according to an embodiment of the present utility model from another angle; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a front view of the battery pack vibration fixture according to an embodiment of the present utility model; Figure 5 This is a perspective view of the fixing seat of the battery pack vibration fixture according to an embodiment of the present utility model.

[0017] Figure label: 100. Battery pack vibration fixture; 1. Tooling body; 11. First section; 111. Corner; 12. Second section; 13. Connecting hole; 131. First hole section; 132. Second hole section; 14. Positioning hole; 15. Weight reduction hole; 16. Recessed part; 17. Fixing hole; 2. Fixing component; 21. Fixing base; 211. First fixing part; 212. Stopping part; 2121. First sub-part; 2122. Second sub-part; 2123. Clearance notch; 213. Second fixing part. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the 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 this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The following description, with reference to the accompanying drawings, describes a battery pack vibration fixture 100 according to an embodiment of the present invention.

[0023] like Figure 1 As shown, the battery pack vibration fixture 100 according to an embodiment of the present invention is used to fix the battery pack on the vibration table of the vibration testing device. The battery pack vibration fixture 100 includes a fixture body 1 and a fixing component 2.

[0024] Specifically, see the attached document. Figure 1 and attached Figure 4 As shown, the fixture body 1 is used to connect to the vibration table. In the direction from top to bottom, the area of ​​the pattern defined by the outer contour of at least part of the fixture body 1 gradually decreases. The fixing component 2 is connected to the fixture body 1 and is used to fix the battery pack.

[0025] Understandably, during battery pack vibration testing, the vibration table drives the fixture body 1 to vibrate, which in turn drives the fixed component 2 to vibrate, thereby causing the battery pack to vibrate as well, thus achieving battery pack vibration testing. In related technologies, testing fixtures often suffer from problems such as resonance points at high-frequency locations, vibration transmission distortion, and inaccurate test results.

[0026] The battery pack vibration fixture 100 of this invention, by making the area of ​​the shape defined by the outer contour of the fixture body 1 larger at the top and smaller at the bottom, has two advantages. First, it allows the size of the upper part of the fixture body 1 to match the size of the battery pack, and the size of the lower part of the fixture body 1 to match the size of the moving coil of the vibration table. This ensures the reliability of the connection between the fixture body 1 and the fixed component 2, and between the fixture body 1 and the vibration table, thus ensuring the stability of the battery pack vibration fixture 100. Second, it can relatively reduce the size of the lower part of the fixture body 1, reducing the weight of the fixture body 1, which is beneficial to the lightweighting of the battery pack vibration fixture 100, reducing the amount of material used, and reducing the manufacturing cost of the battery pack vibration fixture 100. Furthermore, it can efficiently transfer vibration energy from the vibration table on the lower side to the fixed component 2 on the upper side, and then to the battery pack, reducing energy loss, avoiding vibration transmission distortion, and minimizing deformation caused by resonance under high-frequency vibration conditions, thus ensuring the accuracy of the test results of the battery pack fixture.

[0027] According to the embodiment of the present invention, the battery pack vibration fixture 100, by making the area of ​​the shape defined by the outer contour of the fixture body 1 larger at the top and smaller at the bottom, can, on the one hand, make the size of the upper end of the fixture body 1 match the size of the battery pack, and make the size of the lower end of the fixture body 1 match the size of the moving coil of the vibration table, ensuring the reliability of the connection between the fixture body 1 and the fixed component 2 and between the fixture body 1 and the vibration table, and ensuring the stability of the battery pack vibration fixture 100; on the other hand, it can relatively reduce the size of the lower end of the fixture body 1, reduce the weight of the fixture body 1, which is conducive to the lightweighting of the battery pack vibration fixture 100, reducing the amount of material used in the battery pack vibration fixture 100, reducing the manufacturing cost of the battery pack vibration fixture 100, and can efficiently transfer vibration energy from the vibration table on the lower side to the fixed component 2 on the upper side, and then to the battery pack, which can reduce energy loss, avoid deformation caused by resonance as much as possible under high-frequency vibration conditions, and ensure the accuracy of the test results of the battery pack vibration fixture 100.

[0028] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 4 As shown, the tooling body 1 includes a first segment 11 and a second segment 12 arranged and connected in the vertical direction. The first segment 11 is located above the second segment 12. In the vertical direction, the area of ​​the graphic defined by the outer contour of the first segment 11 remains unchanged, while the area of ​​the graphic defined by the outer contour of the second segment 12 gradually decreases.

[0029] Understandably, on the one hand, this allows the dimensions of the first segment 11 to match the dimensions of the battery pack, and the dimensions of the second segment 12 to match the dimensions of the moving coil of the vibration table, ensuring the reliability of the connection between the fixture body 1 and the vibration table, as well as between the fixture body 1 and the fixed component 2, and ensuring the stability of the battery pack vibration fixture 100; on the other hand, this allows the dimensions of the first segment 11 to gradually transition to the dimensions of the second segment 12, avoiding local stress concentration in the fixture body 1 and ensuring the structural reliability of the fixture body 1.

[0030] In a further embodiment of this utility model, reference is made to the appendix. Figure 2 As shown, in a cross-section perpendicular to the vertical direction, the outer contour of the first segment 11 has multiple corners 111, at least a portion of which is formed as an arc. This allows the stress at the corner 111 to be evenly distributed over a larger area, reducing stress concentration, enhancing the structural strength of the first segment 11, optimizing the vibration transmission path of the tooling body 1, reducing vibration energy loss, and thus improving the first-order modal resonance of the tooling body 1. For example, the outer contour of the first segment 11 can have three, four, or five corners 111.

[0031] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2 As shown, the fixture body 1 is provided with multiple connection holes 13 for connecting to the vibration table. These connection holes 13 are spaced apart and extend through the fixture body 1 in the vertical direction. Fasteners pass through the connection holes 13 to fix the fixture body 1 to the moving coil of the vibration table. This design facilitates easy assembly and disassembly, ensures reliable connection, and guarantees efficient transfer of vibration energy from the vibration table to the fixture body 1, thereby driving the battery pack to vibrate and effectively achieving vibration testing of the battery pack. For example, the connection holes 13 can be spaced two, four, eight, ten, twelve, sixteen, or twenty.

[0032] In a specific example, see Appendix Figure 1 and attached Figure 2 As shown, there are sixteen connecting holes 13, which are divided into two groups, each group including eight connecting holes 13. The eight connecting holes 13 in the same group are evenly spaced in the circumferential direction of the tooling body 1, and the two adjacent groups of connecting holes 13 are spaced apart in the radial direction of the tooling body 1. This allows the tooling body 1 to be connected to the vibration table from multiple spaced points on the tooling body 1, ensuring that the vibration table can drive the tooling body 1 to vibrate normally.

[0033] In a further embodiment of this utility model, reference is made to the appendix. Figure 3As shown, the connecting hole 13 includes a first hole segment 131 and a second hole segment 132 arranged and connected in the vertical direction. The first hole segment 131 is located above the second hole segment 132, and the diameter of the first hole segment 131 is larger than that of the second hole segment 132. Considering the large height of the fixture body 1 in the vertical direction, the connecting hole 13 is designed as a countersunk hole. This allows the end of the fastener facing away from the vibration table to be located within the first hole segment 131 when the fixture body 1 is fixed to the vibration table with a fastener, thereby avoiding excessive length of the fastener. This effectively ensures the connection effect of the fastener between the fixture body 1 and the vibration table, ensures the reliability of the connection between the battery pack vibration fixture 100 and the vibration table, and ensures the accuracy of the test results of the battery pack vibration fixture 100. In a specific example, the diameter of the second hole segment 132 is 17.5 mm, the diameter of the first hole segment 131 is 26 mm, and the depth of the first hole segment 131 in the vertical direction is 20 mm.

[0034] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2 As shown, a positioning post is provided on the vibration table, and a positioning hole 14 is provided on the fixture body 1 to cooperate with the positioning post. The positioning post extends in the vertical direction, and the positioning hole 14 penetrates the fixture body 1 in the vertical direction. Through the cooperation of the positioning hole 14 and the positioning post, the fixture body 1 and the moving ring of the vibration table can be relatively fixed in the horizontal direction, thereby achieving the positioning function of the fixture body 1 and preventing the fixture body 1 from moving on the vibration table. This makes it easier to fix the fixture body 1 to the moving ring with fasteners later. For example, the diameter of the positioning hole 14 is 130mm.

[0035] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2 As shown, the fixture body 1 is provided with weight reduction holes 15. On the one hand, it can reduce the weight of the fixture body 1, reduce the material usage of the battery pack vibration fixture 100, and reduce the manufacturing cost of the battery pack vibration fixture 100, which is conducive to the lightweighting of the battery pack vibration fixture 100. On the other hand, it can enable the vibration table to reach the target amplitude and efficiency faster under the same power, reduce energy loss, enable the fixture body 1 to follow the changes of the drive signal more quickly, reduce phase lag, improve the accuracy of vibration control, avoid vibration transmission distortion, and avoid deformation caused by resonance as much as possible under high-frequency vibration conditions, thus ensuring the accuracy of the test results of the battery pack fixture.

[0036] It should be noted that the reference appendix... Figure 2As shown, the weight reduction holes 15 penetrate the fixture body 1 in the vertical direction. Multiple weight reduction holes 15 are spaced apart along the circumferential direction of the fixture body 1, which can further reduce the weight of the fixture body 1, reduce the material used in the fixture body 1, help reduce energy loss, and improve the accuracy of the test results of the battery pack fixture. For example, the number of weight reduction holes 15 can be two, three, four, five, six, seven, eight, nine or ten.

[0037] Further, see attached document. Figure 1 and attached Figure 2 As shown, the outer peripheral wall of the fixture body 1 is provided with an inwardly recessed portion 16. On the one hand, this can reduce the weight of the fixture body 1, reduce the material usage of the battery pack vibration fixture 100, and reduce the manufacturing cost of the battery pack vibration fixture 100, which is conducive to the lightweighting of the battery pack vibration fixture 100. On the other hand, it can enable the vibration table to reach the target amplitude and efficiency faster under the same power, reduce energy loss, enable the fixture body 1 to follow the changes of the drive signal more quickly, reduce phase lag, improve the accuracy of vibration control, avoid vibration transmission distortion, and minimize deformation caused by resonance under high-frequency vibration conditions, thus ensuring the accuracy of the test results of the battery pack fixture.

[0038] In some embodiments of this utility model, reference is made to the appendix. Figure 1 As shown, the main body of the tooling 1 is a single piece.

[0039] Understandably, in existing technologies, testing fixtures using welding or bolting processes can amplify high-frequency resonances (e.g., generating abnormal peaks at frequencies >500Hz), distorting the true vibration waveform and leading to falsely reported test data. Furthermore, long-term high-frequency testing can result in issues such as loose bolts and frame deformation, necessitating frequent shutdowns for reinforcement and disrupting testing continuity.

[0040] This utility model improves the structural stability of the tooling body 1 by making the tooling body 1 an integral part, enabling repeated and stable use of the battery pack vibration tooling 100, ensuring the transmission rigidity under high-frequency vibration, increasing the first-order mode frequency, avoiding energy attenuation, reducing the amplitude deviation of the resonance peak, and ensuring the accuracy of the test results of the battery pack vibration tooling 100.

[0041] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 4As shown, the fixing component 2 includes a fixing seat 21, which is connected to the upper surface of the fixture body 1 and used to fix the battery pack. Multiple fixing seats 21 are spaced apart along the circumferential direction of the fixture body 1. Specifically, the fixture body 1 has multiple fixing holes 17 spaced apart along the circumferential direction of the fixture body 1. The fixing seats 21 pass through the fixing holes 17, and each fixing hole 17 corresponds to one fixing seat 21. The outer peripheral wall of the battery pack has multiple fixing lugs, and the number of fixing seats 21 corresponds one-to-one with the number of fixing lugs. The fixing lugs are fixed to the fixing seats 21 by fasteners. By indirectly fixing the battery pack to the fixture body 1 through the cooperation of multiple fixing seats 21 and fixing lugs, the battery pack vibration fixture 100 of this invention can be compatible with standard rectangular batteries, curved batteries, protruding batteries, or irregularly shaped batteries, improving the compatibility of the battery pack vibration fixture 100, ensuring the reliability of the connection between the battery pack vibration fixture 100 and the battery pack, avoiding incomplete vibration energy transfer, and reducing the test blind zone.

[0042] It should be noted that after the battery pack is installed onto the battery pack vibration fixture 100 of this application, the battery pack is in a suspended state and will not come into contact with the upper surface of the fixture body 1, thereby avoiding friction between the battery pack and the fixture body 1, and matching the state of the battery pack actually assembled on the vehicle.

[0043] Further, see attached document. Figure 5 As shown, the fixing seat 21 includes a first fixing part 211, a stop part 212, and a second fixing part 213 arranged and connected from top to bottom. The fixing lug overlaps the upper end of the first fixing part 211 and is connected to the first fixing part 211 by fasteners. The second fixing part 213 extends in the vertical direction and is fixed in the fixing hole 17. The stop part 212 is located between the first fixing part 211 and the second fixing part 213. In the cross-section perpendicular to the vertical direction, the cross-sectional area of ​​the stop part 212 is larger than the cross-sectional area of ​​the first fixing part 211 and the second fixing part 213. The lower end of the stop part 212 is adapted to abut against the upper surface of the tooling body 1 to position the relative position of the fixing seat 21 and the tooling body 1 in the vertical direction and prevent the fixing seat 21 from continuing to move downward.

[0044] Preferably, refer to the appendix Figure 5As shown, the outer wall surface of the stop portion 212 is provided with an avoidance notch 2123 to match the shape of the battery pack and avoid affecting the normal installation of the battery pack. The stop portion 212 includes a first sub-part 2121 and a second sub-part 2122 arranged and connected in the vertical direction. The first sub-part 2121 is located above the second sub-part 2122. In the vertical direction, the area of ​​the pattern defined by the outer contour of the first sub-part 2121 gradually decreases, while the area of ​​the pattern defined by the outer contour of the second sub-part 2122 remains unchanged, also to match the shape of the battery pack and avoid affecting the normal installation of the battery pack.

[0045] In a specific example, the length of the fixing seat 21 in the vertical direction is 80mm, the total length of the first fixing part 211 and the stop part 212 is 50mm, the outer diameter of the first fixing part 211 is 20mm, the maximum outer diameter of the stop part 212 is 30mm, and the second fixing part 213 is an M16 threaded post.

[0046] In a further embodiment of this utility model, reference is made to the appendix. Figure 5 As shown, the mounting base 21 is a single piece.

[0047] Understandably, in existing technologies, testing fixtures using welding or bolting processes can amplify high-frequency resonances (e.g., generating abnormal peaks at frequencies >500Hz), distorting the true vibration waveform and leading to falsely reported test data. Furthermore, long-term high-frequency testing can result in issues such as loose bolts and frame deformation, necessitating frequent shutdowns for reinforcement and disrupting testing continuity.

[0048] This invention improves the structural stability of the fixing base 21 by making it an integral part, enabling repeated and stable use of the battery pack vibration fixture 100. It also ensures the transmission rigidity under high-frequency vibration, increases the first-order mode frequency, avoids energy attenuation, reduces the amplitude deviation of the resonance peak, and ensures the accuracy of the test results of the battery pack vibration fixture 100.

[0049] In a further embodiment of this utility model, a metal bushing is embedded in the tooling body 1. The metal bushing is suitable for threaded connection with the fixing seat 21. Specifically, the metal bushing is threaded into the fixing hole 17, and the inner peripheral wall of the metal bushing has a thread that mates with the outer peripheral wall of the fixing seat 21. The metal bushing can form a standard M or MJ internal thread with high strength, wear resistance, high temperature resistance, shock resistance, impact resistance, and corrosion resistance. It can also disperse stress, protect the fixing hole 17, comprehensively improve the performance of the fixing hole 17, extend the service life of the tooling body 1, and ensure the reliability and stability of the fit between the tooling body 1 and the fixing seat 21. In a specific example, the metal bushing is a steel dental sleeve.

[0050] In some embodiments of this utility model, reference is made to the appendix. Figure 4 As shown, the upper and lower surfaces of the fixture body 1 are parallel with a tolerance of 0.05mm, which ensures that the vibration energy from the vibration table is evenly transmitted to the entire upper surface of the fixture body 1, thereby balancing the force on the multiple fixed seats 21, ensuring that the fixed components 2 can drive the battery pack to vibrate normally, and improving the testing accuracy of the battery pack vibration fixture 100.

[0051] Other configurations and operations of the battery pack vibration fixture 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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 present 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present 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 present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack vibration fixture for fixing a battery pack on a vibration table of a vibration testing device, characterized in that, include: Tooling body (1), the tooling body (1) is used to connect to the vibration table, and in the direction from top to bottom, the area of ​​the pattern defined by the outer contour of at least part of the tooling body (1) gradually decreases; Fixing component (2) is connected to the tooling body (1) and is used to fix the battery pack.

2. The battery pack vibration fixture according to claim 1, characterized in that, The tooling body (1) includes a first segment (11) and a second segment (12) arranged and connected in the vertical direction. The first segment (11) is located on the upper side of the second segment (12). In the vertical direction, the area of ​​the graphic defined by the outer contour of the first segment (11) remains unchanged, while the area of ​​the graphic defined by the outer contour of the second segment (12) gradually decreases.

3. The battery pack vibration fixture according to claim 2, characterized in that, In a cross section perpendicular to the vertical direction, the outer contour of the first segment (11) has a plurality of corners (111), at least a portion of which are formed as arcs.

4. The battery pack vibration fixture according to claim 1, characterized in that, The tooling body (1) is provided with connection holes (13) for connecting to the vibration table, and the connection holes (13) are a plurality of spaced-apart holes.

5. The battery pack vibration fixture according to claim 4, characterized in that, The connecting hole (13) includes a first hole segment (131) and a second hole segment (132) arranged and connected in the vertical direction. The first hole segment (131) is located on the upper side of the second hole segment (132), and the diameter of the first hole segment (131) is larger than the diameter of the second hole segment (132).

6. The battery pack vibration fixture according to claim 1, characterized in that, The vibration table is provided with a positioning column, and the tooling body (1) is provided with a positioning hole (14) that cooperates with the positioning column.

7. The battery pack vibration fixture according to any one of claims 1-6, characterized in that, The tooling body (1) is provided with weight reduction holes (15); And / or, the outer peripheral wall of the tooling body (1) is provided with an inwardly recessed portion (16).

8. The battery pack vibration fixture according to any one of claims 1-6, characterized in that, The tooling body (1) is a single piece.

9. The battery pack vibration fixture according to any one of claims 1-6, characterized in that, The fixing component (2) includes a fixing seat (21), which is connected to the upper surface of the tooling body (1) and is used to fix the battery pack. The fixing seats (21) are a plurality of them spaced apart along the circumferential direction of the tooling body (1).

10. The battery pack vibration fixture according to claim 9, characterized in that, The fixing base (21) is a single piece; And / or, the tooling body (1) is provided with a metal bushing, which is adapted to be threadedly connected to the fixed seat (21).

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