Battery pack vibration test tool

Abstract

The utility model provides a battery pack vibration test tool, which is used for assembling a battery pack to be tested on a vibration table for vibration test, and comprises a bottom plate which is assembled on the vibration table and is used for supporting and fixing the battery pack to be tested; the connecting mechanism is assembled on the bottom plate, and a battery pack to be tested is accommodated in an accommodating cavity defined by the connecting mechanism and the bottom plate; the limiting mechanism is fixedly kept on a lifting lug of the to-be-tested battery pack and is assembled on the connecting mechanism so as to restrain the to-be-tested battery pack in the accommodating cavity; the base plate is provided with a plurality of basic installation parts used for assembling the connecting mechanisms, the assembling positions of the connecting mechanisms on the base plate are changed, and the size of the containing cavity is adjustable. According to the vibration test tool for the battery pack, the structure of the vibration test tool is optimized, so that the use quality of the vibration test tool for the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack testing, in particular to a battery pack vibration testing tool. Background Art

[0002] Battery pack vibration testing is an integral part of the development of electric vehicles. Battery packs are subject to a variety of vibration conditions during driving, such as uneven roads, wind resistance vibration during high-speed driving, etc. These vibrations not only affect the performance of the battery pack, but may also damage the structure of the battery pack, thereby affecting the safety and reliability of the entire vehicle. In order to ensure that the battery pack can maintain good performance under various vibration conditions, vibration testing must be used to simulate these conditions and evaluate the structural strength and durability of the battery pack.

[0003] The battery pack vibration test fixture is a key device in the testing process. It must not only be able to accurately simulate the real vibration environment, but also ensure that no additional damage is caused to the battery pack during the test. Most of the battery pack vibration test fixtures currently on the market are designed for specific types of battery packs, which results in poor versatility. Once the test object needs to be changed, the fixture may need to be redesigned or adjusted, which undoubtedly increases the cost and complexity of the test, while also reducing the test efficiency.

[0004] Since different types of battery packs differ in size, weight, structure, etc., universal tooling may not be fully suitable for all models, which will affect the accuracy of the test results. In addition, the mismatch between the tooling and the battery pack may increase the safety risks during the test and further reduce the reliability of the test. This will have a negative impact on the quality of the battery pack vibration test tooling. Utility Model Content

[0005] In view of this, the utility model aims to propose a battery pack vibration test tool, so as to improve the use quality of the battery pack vibration test tool by optimizing its own structure.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A battery pack vibration test fixture is used to place a battery pack to be tested on a vibration table for vibration testing, and the fixture includes:

[0008] A bottom plate, mounted on the vibration table, for supporting and fixing the battery pack to be tested;

[0009] A connecting mechanism is mounted on the bottom plate, and the battery pack to be tested is accommodated in a receiving cavity formed by the connecting mechanism and the bottom plate;

[0010] A limiting mechanism, fixedly held on the lifting ear of the battery pack to be tested and assembled on the connecting mechanism to constrain the battery pack to be tested in the accommodating cavity;

[0011] The bottom plate is provided with a plurality of basic mounting parts for assembling the connecting mechanism. The size of the accommodating cavity can be adjusted by changing the assembly position of the connecting mechanism on the bottom plate.

[0012] Furthermore, the connection mechanism includes a connection seat, and a plurality of connection blocks arranged along the height direction of the battery pack to be tested and assembled on the connection seat;

[0013] The connecting seat is assembled on the bottom plate, and the limiting mechanism is assembled on the connecting block located on the top.

[0014] Furthermore, the bottom surface of the connecting block follows the shape of the connecting seat.

[0015] Furthermore, the limiting mechanism includes a mounting portion and a limiting portion, the base portion is fixedly arranged on the connecting mechanism, and the limiting portion is extended outwardly from the base portion;

[0016] When the basic mounting portion is assembled on the connecting mechanism, the limiting portion is assembled on the battery pack to be tested.

[0017] Furthermore, the base portion is formed in accordance with the top surface of the connecting mechanism, and the limiting portion extends outward from the base portion in the form of a trapezoidal block.

[0018] Furthermore, a boss is provided in the middle portion of the limiting mechanism and extends upward along the height direction of the limiting mechanism.

[0019] Furthermore, a reinforcing portion is protruding from the bottom surface of the bottom plate along the height direction of the bottom plate, and the reinforcing portion is formed on the bottom plate below the rear lifting ear of the battery pack to be tested.

[0020] Furthermore, the bottom plate is formed by splicing a plurality of sub-plates.

[0021] Furthermore, a hollow portion is formed in the middle of the bottom plate.

[0022] Further, the bottom plate includes a front mounting plate, a rear mounting plate, a left mounting plate and a right mounting plate which are arranged correspondingly along the circumference of the battery pack;

[0023] The connecting mechanism and the limiting mechanism are arranged on each mounting plate at intervals corresponding to the number and position of the front, rear, left and right lifting ears of the battery pack to be tested.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] The battery pack vibration test tooling described in the utility model arranges a number of basic mounting parts at different positions on the bottom plate. When the position of the basic mounting part on which the connecting mechanism is assembled is changed, it can correspond to battery packs of different sizes, so that the size of the accommodating cavity formed by the connecting mechanism and the bottom plate can be adjusted according to the size of the battery pack to be tested, and the battery pack can be constrained in the accommodating cavity by a limiting mechanism to simulate the assembly condition of the battery pack on the whole vehicle, which is beneficial to the accuracy of the vibration test results. The adjustable size of the accommodating cavity makes the tooling more adaptable, more versatile, and has a simple structure, which is beneficial to design and implementation.

[0026] The height of the connecting mechanism is made adjustable by setting the connecting blocks. By changing the number of connecting blocks assembled on the connecting seat, the connecting mechanism can adapt to battery packs of different heights, which is beneficial to improving the applicability of the battery pack vibration test tooling. The structure is simple, which is conducive to design implementation.

[0027] The bottom surface of the connecting block is made to follow the shape of the connecting seat, so that it can be assembled on the connecting seat more closely, which is beneficial for the battery pack vibration test tooling to ensure its own structural strength when in use, and is beneficial for improving the connection stability between the connecting block and the connecting seat, which is beneficial for design implementation.

[0028] The setting of the base part enables the limiting part to have an installation base and can be more stably assembled on the connecting mechanism. The limiting part is assembled on the battery pack, so that the battery pack is more stably constrained in the accommodating cavity, and the structure is simple, which is conducive to design implementation.

[0029] The base part follows the top surface of the connecting mechanism, making the assembly relationship between the base part and the connecting mechanism closer, thereby better improving the assembly stability of the base part and the connecting mechanism. The limiting part is arranged in a trapezoidal block, which is convenient for locating the assembly position of the limiting mechanism on the basis of ensuring the connection strength of the limiting part, and is conducive to design implementation.

[0030] The arrangement of the boss strengthens the structural strength of the limiting mechanism, simplifies the structure, and can locate the assembly direction of the limiting mechanism, which is beneficial to the design implementation.

[0031] The provision of the reinforcement portion enables the structure of the bottom plate below the rear lifting ear of the corresponding battery pack to be strengthened, thereby increasing the overall strength of the bottom plate, helping to reduce the error caused by insufficient bottom plate strength during vibration testing, and improving the accuracy of the battery pack vibration test.

[0032] The spliced ​​bottom plate allows the bottom plate to be hoisted onto the vibration table in blocks, which is beneficial to the assembly and transportation of the bottom plate. The weight of the entire bottom plate is distributed to each sub-plate, which reduces the difficulty of assembly and transportation of the bottom plate and facilitates the design implementation.

[0033] The setting of the hollow part better realizes the lightweight design of the base plate, so that the base plate has a lighter weight while ensuring the structural strength, which is convenient for test personnel to assemble and conducive to design implementation.

[0034] The bottom plate is separately arranged in the directions of the battery pack, so that it can ensure the fixing effect of the battery pack on the vibration table while being lightweight. It is assembled in the directions of the battery pack to ensure the connection strength between the battery pack and the connecting mechanism, and the structure is simple, which is conducive to design implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the structure of the battery pack vibration test tooling according to an embodiment of the utility model;

[0037] Figure 2 This is a schematic diagram of the structure of the battery pack assembly state of the battery pack vibration test tooling according to an embodiment of the utility model;

[0038] Figure 3 An exploded view of the battery pack assembly state of the battery pack vibration test tooling according to an embodiment of the utility model;

[0039] Figure 4 It is a partial structural schematic diagram of the battery pack vibration test tooling according to an embodiment of the utility model in a battery pack assembled state;

[0040] Figure 5 It is a structural schematic diagram of another arrangement form of the battery pack vibration test tooling according to an embodiment of the utility model;

[0041] Figure 6 This is a schematic diagram of the structure of the bottom plate according to an embodiment of the utility model;

[0042] Figure 7 It is a structural schematic diagram of the limiting mechanism described in an embodiment of the utility model;

[0043] Description of reference numerals:

[0044] 1. Bottom plate;

[0045] 101. Basic mounting part; 102. Hollow part; 103. Reinforcement part; 104. Front mounting plate; 105. Rear mounting plate; 106. Left mounting plate; 107. Right mounting plate; 108. Lifting ring;

[0046] 2. Connecting mechanism;

[0047] 201, connecting seat; 202, connecting block;

[0048] 3. Limiting mechanism;

[0049] 301, base portion; 302, limit portion; 303, boss;

[0050] 4. Battery pack;

[0051] 401, hanging lug;

[0052] s. Accommodation cavity. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0054] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] Taking the battery pack structure described in the present invention as an example, the directional words used in the embodiments, such as "up, down, left, right, front, and back", are defined based on the up and down direction (also called the height direction, or the Z direction of the entire package), the left and right direction (also called the width direction, or the Y direction of the entire package), and the front and back direction (also called the length direction, or the X direction of the entire package) of the battery pack.

[0056] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0057] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0058] Embodiment 1

[0059] The present embodiment relates to a battery pack testing tool, which aims to improve the use quality of the battery pack testing tool by optimizing its own structure.

[0060] Before describing the overall structure of the battery pack test fixture in this embodiment, it is necessary to briefly introduce the concepts involved in the battery pack test fixture in this embodiment. The battery pack test fixture in this embodiment is used to assemble the battery pack to be tested on a vibration table for vibration testing, and the vibration table can simulate the vibration conditions during vehicle use.

[0061] In terms of overall structure, combined Figures 1 to 3 As shown, the battery pack test fixture in this embodiment includes a base plate 1, which is assembled on a vibration table and is used to support and fix the battery pack 4 to be tested. The connecting mechanism 2 is assembled on the base plate 1, and the battery pack 4 to be tested is accommodated in a accommodating cavity s formed by the connecting mechanism 2 and the base plate 1. The limiting mechanism 3 is fixedly retained on the ear 401 of the battery pack 4 to be tested, and is assembled on the connecting mechanism 2 to constrain the battery pack 4 to be tested in the accommodating cavity s. The base plate 1 has a plurality of basic mounting parts 101 for assembling the connecting mechanism 2. By changing the assembly position of the connecting mechanism 2 on the base plate 1, the size of the accommodating cavity s can be adjusted.

[0062] As configured above, the battery pack testing tooling in this embodiment arranges a number of base mounting parts 101 at different positions on the base plate 1. When the position of the base mounting part 101 assembled by the connecting mechanism 2 is changed, it can correspond to battery packs 4 of different sizes, so that the size of the accommodating cavity s formed by the connecting mechanism 2 and the base plate 1 can be adjusted according to the size of the battery pack 4 to be tested, and the battery pack 4 is constrained in the accommodating cavity s by the limiting mechanism 3 to simulate the assembly condition of the battery pack 4 on the whole vehicle, which is beneficial to the accuracy of the vibration test results. The adjustable size of the accommodating cavity s makes the tooling more adaptable, more versatile, and simple in structure, which is beneficial to design and implementation.

[0063] The base plate 1 is used to support and fix the battery pack 4 to be tested, and is constructed into a plate-like structure. The base plate 1 is equipped with mounting bolts, and the base plate 1 can be mounted on the vibration table through the mounting bolts.

[0064] In order to increase the overall structural strength of the bottom plate 1, the Figure 4 and Figure 6 As shown, the bottom surface of the base plate 1 of the present embodiment is provided with a reinforcing portion 103 protruding along the height direction of the base plate 1. The reinforcing portion 103 is formed on the base plate 1 below the rear ear 401 of the battery pack 4 to be tested. The provision of the reinforcing portion 103 enables the base plate 1 to be structurally reinforced at a portion below the rear ear 401 of the battery pack 4, thereby increasing the overall strength of the base plate 1, which is beneficial to reducing the error caused by insufficient strength of the base plate 1 during the vibration test, thereby improving the accuracy of the vibration test of the battery pack 4.

[0065] Specifically, since the height of the ear 401 on the rear side of the battery pack 4 is relatively high, the connecting mechanism 2 will also be set higher. In order to improve the structural strength of this part of the bottom plate 1, the reinforcing portion 103 is arranged on the bottom plate 1 below the ear 401 on the rear side of the battery pack 4. The reinforcing portion 103 extends outward from the bottom plate 1 to form a step-like structure with the bottom plate 1. The setting of the reinforcing portion 103 increases the thickness of the bottom plate 1 located below the ear 401 on the rear side of the battery pack 4, thereby improving the structural strength of the bottom plate 1, reducing the error caused by insufficient strength of the bottom plate 1, and facilitating improving the accuracy of the vibration test of the battery pack 4.

[0066] In more detail, combined with Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, due to the different requirements on the structural strength of the bottom plate 1 on the front and rear sides of the battery pack 4, the portion of the bottom plate 1 located on the front side of the battery pack 4 can be lightweight and only needs to be able to assemble the connecting mechanism 2. Therefore, the outer contour of the bottom plate 1 located on the front side of the battery pack 4 is gradually reduced from both sides of the bottom plate 1.

[0067] In order to facilitate the processing of the base plate 1, the base plate 1 in this embodiment is spliced ​​together by multiple sub-plates. The spliced ​​base plate 1 allows the base plate 1 to be hoisted in blocks onto the vibration table, which is beneficial to the assembly and transportation of the base plate 1. The weight of the entire base plate 1 is dispersed to each sub-plate, which reduces the difficulty of assembly and transportation of the base plate 1 and facilitates the design implementation.

[0068] In order to facilitate the lightweight design of the bottom plate 1, Figure 1 , Figure 5 and Figure 6 As shown, a hollow portion 102 is formed in the middle of the base plate 1 in this embodiment. The setting of the hollow portion 102 better realizes the lightweight design of the base plate 1, so that the base plate 1 has a lighter weight on the basis of ensuring structural strength, which is convenient for testers to assemble and facilitates design implementation.

[0069] In order to facilitate the arrangement of the bottom plate 1, Figure 5 As shown, the base plate 1 in this embodiment includes a front mounting plate 104, a rear mounting plate 105, a left mounting plate 106 and a right mounting plate 107 which are arranged correspondingly along the circumference of the battery pack 4. The connecting mechanism 2 and the limiting mechanism 3 are arranged on each mounting plate at intervals corresponding to the number and position of the front, rear, left and right lifting ears 401 of the battery pack 4 to be tested. The base plate 1 is separately arranged in the directions around the battery pack 4, so that it can ensure the fixing effect of the battery pack 4 on the vibration table while being lightweight. It is assembled in the directions around the battery pack 4 to ensure the connection strength between the battery pack 4 and the connecting mechanism 2, and has a simple structure, which is conducive to design implementation.

[0070] Specifically, the bottom plate 1 can be arranged in two forms, combining Figure 1 and Figure 6 As shown, one arrangement is that the base plate 1 is spliced ​​by sub-plates into a larger base plate 1 with multiple basic mounting parts 101. The spliced ​​base plate 1 has a larger area than the battery pack 4. During the vibration test, the base plate 1 can be assembled on the vibration table, and the connection mechanism 2 can be arranged according to the size of the battery pack 4, and the battery pack 4 can be constrained in the accommodating cavity s by the limiting mechanism 3 to perform the vibration test of the battery pack 4. When replacing battery packs 4 of different sizes, it is necessary to adjust the assembly position of the connection mechanism 2 and the position of the accommodating cavity s to perform vibration tests on battery packs 4 of different sizes.

[0071] Combination Figure 5 As shown, another arrangement is that the base plate 1 is made of a material with high structural strength, and the area of ​​the base plate 1 is processed to be smaller, only sufficient to be assembled on the vibration table and to be sufficient to install the connecting mechanism 2. During assembly, the connecting mechanism 2 is assembled on the base plate 1, the limiting mechanism 3 is assembled on the battery pack 4, and the base plate 1 is assembled together with the connecting mechanism 2 on the limiting mechanism 3. The tooling as a whole is hoisted together with the battery pack 4 onto the vibration table, and the base plate 1 is assembled on the vibration table to adapt to the vibration test of battery packs 4 of different sizes.

[0072] In order to facilitate lifting, combined Figure 5 As shown, a lifting ring 108 is also constructed on the base plate 1. The provision of the lifting ring 108 makes it easy to fix the tooling during lifting, improves the stability of the tooling lifting, and is conducive to improving the tooling lifting efficiency.

[0073] The connecting mechanism 2 is assembled on the base plate 1. By adjusting the assembly position of the connecting mechanism 2 on the base plate 11, the size of the accommodating cavity s can be adjusted so as to adapt to the assembly of battery packs 4 of different sizes. When the battery pack 4 is assembled into the accommodating cavity s, the connecting mechanism 2 surrounds the side of the battery pack 4 along the circumference of the battery pack 4.

[0074] In order to better adapt to the depth of different battery packs 4, combined Figure 3 and Figure 4 As shown, the connection mechanism 2 in this embodiment includes a connection seat 201, and a plurality of connection blocks 202 arranged along the height direction of the battery pack 4 to be tested and assembled on the connection seat 201. The connection seat 201 is assembled on the bottom plate 11, and the limiting mechanism 3 is assembled on the connection block 202 located at the top. The height of the connection mechanism 2 is adjustable by the arrangement of the connection block 202. By changing the number of the connection blocks 202 assembled on the connection seat 201, the connection structure can be adapted to battery packs 4 of different heights, which is conducive to improving the applicability of the battery pack test tooling, and the structure is simple, which is conducive to design implementation.

[0075] In order to improve the connection strength between the connecting block 202 and the connecting seat 201, the bottom surface of the connecting block 202 in the present embodiment is shaped like the connecting seat 201, so that the bottom surface of the connecting block 202 is shaped like the connecting seat 201 and can be more closely assembled on the connecting seat 201, which is beneficial for the battery pack testing tooling to ensure its own structural strength when in use, and is beneficial for improving the connection stability between the connecting block 202 and the connecting seat 201, which is beneficial for design implementation.

[0076] The limiting mechanism 3 is assembled on the connecting mechanism 2 and the battery pack 4 . The limiting mechanism 3 constrains the battery pack 4 in the accommodating cavity s. The battery pack 4 is constrained in the accommodating cavity s by the setting of the limiting mechanism 3 .

[0077] In order to improve the connection strength between the limiting mechanism 3 and the connection structure, Figure 3 and Figure 7 As shown, the limiting mechanism 3 in this embodiment includes a base portion 301 and a limiting portion 302. The base portion 301 is fixed on the connection structure, and the limiting portion 302 is extended outward from the base portion 301. When the base portion 301 is assembled on the connection mechanism 2, the limiting portion 302 is assembled on the battery pack 4 to be tested. The setting of the base portion 301 enables the limiting portion 302 to have an installation base, so that it can be assembled on the connection mechanism 2 more stably. The limiting portion 302 is assembled on the battery pack 4, so that the battery pack 4 is more stably constrained in the accommodating cavity s, and the structure is simple, which is conducive to design and implementation.

[0078] For better connection tightness, combine Figure 1 , Figure 3 and Figure 7 As shown, the base portion 301 in this embodiment is formed on the top surface of the connecting mechanism 2, and the limiting portion 302 extends outward from the base portion 301 and is arranged in a trapezoidal block. The base portion 301 is formed on the top surface of the connecting mechanism 2, so that the assembly relationship between the base portion 301 and the connecting mechanism 2 is closer, thereby better improving the assembly stability of the base portion 301 and the connecting mechanism 2. The limiting portion 302 is arranged in a trapezoidal block. On the basis of ensuring the connection strength of the limiting portion 302, it is easy to locate the assembly position of the limiting mechanism 3, which is conducive to design implementation.

[0079] In order to improve the structural strength of the connecting mechanism 2, a boss 303 is provided in the middle part of the limiting mechanism 3 in the present embodiment and extends upward along the height direction of the limiting mechanism 3. The setting of the boss 303 enhances the structural strength of the limiting mechanism 3, and has a simple structure. It can also locate the assembly direction of the limiting mechanism 3, which is convenient for design implementation.

[0080] During assembly of this embodiment, the base plate 1 is first assembled on the vibration table, and then the connecting mechanism 2 is assembled on the base plate 1 according to the fixation requirements of the battery pack 4. Then, the battery pack 4 is assembled into the accommodating cavity s, and the ear 401 of the battery pack 4 and the connecting mechanism 2 are connected by the limiting mechanism 3, so that the battery pack 4 is constrained in the accommodating cavity s, and the assembly condition of the battery pack 4 in the whole vehicle state can be simulated to perform a vibration test on the battery pack 4.

[0081] In order to improve the vibration performance of the battery pack test fixture body in this embodiment, the battery pack test fixture in this embodiment is subjected to constrained modal and vibration analysis, and the stiffness effect and mass influence of the battery pack 4 are considered during the analysis.

[0082] The analysis results are shown in Tables 1 and 2 below.

[0083] Table 1 Comparison of modal analysis results

[0084]

[0085] Table 2 Comparison of vibration analysis results

[0086]

[0087] Among them, the non-tooling structure refers to the vibration test results of the battery pack when the tooling is not assembled for vibration test; the overall tooling refers to the vibration test results of the battery pack when the base plate 1 is a plate-like structure with a larger area; the block tooling refers to the vibration test results of the battery pack when the base plate 1 is a multi-plate structure with a smaller area; the water-cooling plate refers to the water-cooling plate of the battery pack 4; the aluminum shell refers to the shell of the battery pack 4.

[0088] By comparing the above-mentioned modal analysis results and vibration analysis results, it can be seen that the battery pack vibration test jig of the present application can simulate the assembly condition of the battery pack 4 when it is assembled on the whole vehicle, and can reduce the error caused by the influence of the structure of the battery pack vibration test jig itself, which is beneficial to improving the use quality of the battery pack vibration test jig.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack vibration test tool, used to place the battery pack to be tested on a vibration table for vibration testing, characterized in that: The tooling includes: A bottom plate, mounted on the vibration table, for supporting and fixing the battery pack to be tested; A connecting mechanism is mounted on the bottom plate, and the battery pack to be tested is accommodated in a receiving cavity formed by the connecting mechanism and the bottom plate; A limiting mechanism, fixedly held on the lifting ear of the battery pack to be tested and assembled on the connecting mechanism to constrain the battery pack to be tested in the accommodating cavity; The bottom plate is provided with a plurality of basic mounting parts for assembling the connecting mechanism. The size of the accommodating cavity can be adjusted by changing the assembly position of the connecting mechanism on the bottom plate.

2. The battery pack vibration test tool according to claim 1, characterized in that: The connecting mechanism comprises a connecting seat and a plurality of connecting blocks arranged along the height direction of the battery pack to be tested and assembled on the connecting seat; The connecting seat is assembled on the bottom plate, and the limiting mechanism is assembled on the connecting block located on the top.

3. The battery pack vibration test tool according to claim 2, characterized in that: The bottom surface of the connecting block follows the shape of the connecting seat.

4. The battery pack vibration test tool according to claim 1, characterized in that: The limiting mechanism comprises a base part and a limiting part, wherein the base part is fixedly arranged on the connecting mechanism, and the limiting part is extended outwardly from the base part; When the base portion is assembled on the connecting mechanism, the limiting portion is assembled on the battery pack to be tested.

5. The battery pack vibration test tool according to claim 4, characterized in that: The base part is formed in accordance with the top surface of the connecting mechanism, and the limiting part extends outward from the base part to be arranged in a trapezoidal block.

6. The battery pack vibration test tool according to claim 5, characterized in that: A boss is provided in the middle of the limiting mechanism, extending upward along the height direction of the limiting mechanism.

7. The battery pack vibration test tool according to claim 1, characterized in that: A reinforcing portion is protruded from the bottom surface of the bottom plate along the height direction of the bottom plate, and the reinforcing portion is formed on the bottom plate below the rear lifting ear of the battery pack to be tested.

8. The battery pack vibration test tool according to any one of claims 1 to 7, characterized in that: The bottom plate is formed by splicing a plurality of sub-plates.

9. The battery pack vibration test tool according to claim 8, characterized in that: A hollow portion is formed in the middle of the bottom plate.

10. The battery pack vibration test tool according to claim 8, characterized in that: The bottom plate includes a front mounting plate, a rear mounting plate, a left mounting plate and a right mounting plate which are arranged correspondingly along the circumference of the battery pack; The connecting mechanism and the limiting mechanism are arranged on each mounting plate at intervals corresponding to the number and position of the front, rear, left and right lifting ears of the battery pack to be tested.

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