A vibration test fixture and a vibration test clamp for a battery plug-in box

Abstract

The utility model relates to the technical field of energy storage equipment, concretely relates to vibration test fixture structure optimization design of battery plug -in box, the utility model is through the following technical scheme to be able to realize: a kind of vibration test fixture for battery plug -in box, containing two groups of fixed support base installed on vibration table, two groups of fixed support base are supported at the opposite two side edges of battery plug -in box bottom respectively, to make the middle region of the battery plug -in box be suspended between two groups of fixed support base;Still contain multiple for fixing the limiting piece of battery plug -in box for being set on the fixed support base.The utility model aims at providing a kind of vibration test tool that can more truly simulate the stress state in actual transportation process, improves the accuracy and reliability of vibration test.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, specifically to an optimized design of a vibration testing fixture for a battery compartment. Background Technology

[0002] The battery pack is the smallest maintainable unit of an energy storage system or electric vehicle power battery system, integrating battery cells, a battery management system (BMS), current busbars, thermal management, and mechanical interfaces. Because the battery pack may face complex mechanical environments during operation, such as bumps during vehicle movement and impacts and vibrations during transportation, these external mechanical factors can affect the structural integrity, electrical connection reliability, and overall safety of the battery system. To ensure its safe and stable operation under various conditions, relevant national standards clearly require that the battery pack must pass a series of rigorous environmental and mechanical performance tests before being put into practical use. Vibration testing is one of the key aspects of evaluating its structural strength and reliability. Vibration testing aims to simulate the vibration environment that the battery pack may experience during actual transportation and use, verifying its durability and stability under long-term dynamic loads.

[0003] To facilitate transportation and installation, battery compartments are typically fixed inside frame-type battery cabinets during actual transport, handled as complete units. The cabinet only provides partial support to the compartments via support beams, leaving the middle of the battery compartment suspended without full enclosure. Current vibration testing methods directly fix the battery compartments to the vibration table surface, subjecting them to full stress on the bottom. This differs significantly from the stress distribution during actual transport and fails to accurately reflect the mechanical state of the compartments being "suspended in the middle" during transport. This leads to test results deviating from reality, affecting the accuracy of durability and stability assessments. Furthermore, this assessment bias may mask potential risks such as structural fatigue, loose connections, or internal damage to the battery compartments, thus impacting their safety and reliability during transport and use, and potentially even causing safety accidents. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, this utility model proposes a vibration testing fixture and vibration testing tooling for battery boxes, which can more realistically simulate the stress state during actual transportation. Compared with existing devices, it significantly improves the accuracy and reliability of vibration testing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a vibration testing fixture for a battery compartment, characterized in that: it includes two sets of fixed support bases mounted on a vibration table, the two sets of fixed support bases respectively supporting the opposite two sides of the bottom surface of the battery compartment, so that the middle area of ​​the battery compartment is suspended between the two sets of fixed support bases; it also includes a plurality of limiting members disposed on the fixed support bases for fixing the battery compartment.

[0006] This invention proposes a vibration testing fixture for battery packs. Before testing, two sets of fixed support bases are installed parallel and opposite to each other on a vibration table, and the distance between them is adjusted according to the width of the battery pack. The battery pack is placed above the two sets of fixed support bases, with one edge of the bottom surface of the battery pack abutting the upper surface of one set of fixed support bases, and the other edge of its bottom surface abutting the upper surface of the other fixed support base. This effectively supports the two sides of the bottom of the battery pack, while the central area remains suspended between the two sets of support bases, realistically simulating the "supported on both sides, suspended in the middle" stress state of the battery pack during actual transportation. Furthermore, to further ensure the stability of the battery pack during vibration testing and prevent displacement or shaking, multiple limiting components are installed on the two sets of fixed support bases to fix the battery pack, ensuring a stable and reliable installation state during vibration testing.

[0007] This invention mounts the battery compartment above two sets of fixed support bases and secures it with limiting components, so that the middle area of ​​the battery compartment is located between the two sets of support bases and remains suspended. This realistically reproduces the force situation of the battery compartment during actual transportation, where it is "supported on both sides and suspended in the middle". It can more accurately reflect the actual state during transportation and significantly improve the authenticity, accuracy and reliability of vibration testing.

[0008] Preferably, each set of the fixed support bases includes:

[0009] A horizontal fixed base plate installed on the vibration table;

[0010] A support plate is provided on the horizontal fixed base plate and extends along the length direction of the horizontal fixed base plate;

[0011] A support plate, which is installed on top of the support stand and is used to support the side edge of the battery compartment;

[0012] And a plurality of reinforcing beams are arranged at intervals along the extension direction of the supporting upright plate. One side of the reinforcing beam is connected to the supporting upright plate, the top end of the beam abuts against the lower surface of the support plate, and the bottom end abuts against the upper surface of the horizontal fixed base plate.

[0013] The fixed support base is a frame structure consisting of a horizontal fixed base plate, a support plate, a support plate, and multiple reinforcing beams spaced apart along the extension direction of the support plate. This design not only reduces the amount of material used and lowers the overall weight, but also enhances the overall rigidity and stability of the structure through the reasonable layout of the reinforcing beams, thus providing a solid support foundation for the battery box.

[0014] Preferably, the sidewall of the reinforcing beam plate away from the supporting upright plate extends outward from top to bottom in an inclined manner.

[0015] The reinforcing beam is angled outwards from top to bottom along its edge furthest from the supporting upright, forming a slanted support structure with a certain inclination angle. This structure effectively improves the bending resistance and load-bearing strength of the fixed support base, while enhancing its structural stability and fatigue resistance under vibration testing. This further ensures the safety of the battery pack testing process and extends the service life of the equipment.

[0016] Preferably, the device also includes two parallel connecting constraints, each of which is connected at both ends to the ends of the two sets of fixed support bases; the connecting constraints also include a contact surface for abutting against the side of the battery compartment.

[0017] Two connecting constraint members are respectively installed at both ends of the two sets of fixed support bases. Each connecting constraint member is connected to the fixed support base at the corresponding end, thereby effectively limiting and stabilizing the distance between the two sets of support bases. At the same time, the connecting constraint members are provided with abutting surfaces for contacting the sides of the battery compartment, which can play a lateral limiting role for the battery compartment during the test, preventing it from shifting or shaking, thereby improving the stability of the overall support structure and the safety and reliability of the test process.

[0018] Preferably, the connecting constraint member has multiple spacing adjustment holes, and the fixed support base and the connecting constraint member achieve spacing adjustment of their relative connection positions by fasteners passing through the spacing adjustment holes.

[0019] The connecting constraint has multiple spacing adjustment holes. The fixed support base and the connecting constraint are connected in an adjustable manner via fasteners passing through the corresponding spacing adjustment holes. The relative spacing between the two sets of fixed support bases can be flexibly adjusted according to the actual size of the battery compartment, and a suitable spacing adjustment hole can be selected for connection with the connecting constraint. This structural design not only enables the installation of battery compartments of different specifications but also significantly improves the versatility and applicability of the connecting constraint in different assembly states.

[0020] Preferably, the limiting member includes a battery compartment contact surface, and an elastic buffer layer is provided on the battery compartment contact surface.

[0021] An elastic buffer layer (such as rubber or silicone) is provided on the contact surface of the battery compartment of the limiting component. This can effectively avoid rigid contact between the limiting component and the battery compartment during the test and prevent damage to the paint layer on the surface of the battery compartment caused by vibration or clamping.

[0022] Preferably, a transition surface is provided between the battery compartment contact surface and the intersecting side wall.

[0023] Compared to right-angle or sharp-angle structures, setting a transition curved surface at the junction of the battery compartment contact surface and the side wall can effectively avoid stress concentration, thereby reducing the risk of structural damage to the battery compartment during the installation of limiting components or vibration testing, and improving the overall reliability and durability of the structure.

[0024] A vibration testing fixture for a battery compartment includes the aforementioned vibration testing jig for a battery compartment, and also includes a vibration table, wherein the fixed support base is mounted on the vibration table.

[0025] In summary, this utility model has the following beneficial effects:

[0026] By setting two sets of fixed support bases and placing the battery box on top of them, and using limiting components to position and fix the battery box, the middle area of ​​the battery box is located between the two sets of support bases and is in a suspended state. This realistically simulates the stress condition of the battery box during actual transportation, which is "supported on both sides and suspended in the middle", thus significantly improving the authenticity, accuracy and reliability of vibration testing.

[0027] The fixed support base is a frame structure consisting of a horizontal fixed base plate, a support plate, a support plate, and multiple reinforcing beams spaced apart along the extension direction of the support plate. This design not only reduces the amount of material used and lowers the overall weight, but also enhances the overall rigidity and stability of the structure through the reasonable layout of the reinforcing beams, thus providing a solid support foundation for the battery box.

[0028] In addition, this application provides connecting constraint members at both ends of the two sets of fixed support bases, which can effectively limit the lateral movement of the battery box and prevent the battery box from shifting or shaking during vibration, thereby improving the stability of the overall support structure and further ensuring the safety and reliability of the testing process.

[0029] Furthermore, an elastic buffer layer is provided on the battery compartment contact surface of the limiting component, which can effectively avoid rigid contact between the limiting component and the battery compartment during the test and prevent damage to the paint layer on the surface of the battery compartment caused by vibration or clamping. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the battery box and vibration test fixture in Example 1.

[0031] Figure 2 This is a schematic diagram of the overall structure of the vibration testing fixture;

[0032] Figure 3 This is a schematic diagram of the overall structure of the fixed support base;

[0033] Figure 4 This is a schematic diagram of the overall structure of the limiting component.

[0034] in:

[0035] 1-Fixed support base; 11-Horizontal fixed base plate; 12-Supporting upright plate; 13-Support plate; 14-Reinforcing beam plate; 2-Battery box; 3-Limiting component; 31-Battery box contact surface; 32-Transition curved surface; 33-Pressing contact part; 4-Connecting constraint component; 41-Contact surface; 5-Fastener. Detailed Implementation

[0036] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the present utility model is further described below in conjunction with specific illustrations. However, this utility model is not limited to the following embodiments.

[0037] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Example 1:

[0038] This application provides a fixture for vibration testing of battery packs, suitable for simulating the stress state of a battery pack during actual transportation, characterized by "support on both sides and suspension in the middle," thereby improving the realism and reliability of the vibration test. Figure 1 and Figure 2 As shown, the fixture mainly includes: two sets of fixed support bases 1, limiting members 3, and connecting constraint members 4.

[0039] During the test preparation phase, two sets of fixed support bases 1 are first installed on the vibration table surface using bolts. The distance between the two sets of fixed support bases 1 can be adjusted according to the width of the battery box 2 under test to accommodate battery boxes of different sizes. Subsequently, the battery box 2 is placed on the top surface of the two sets of fixed support bases 1, so that the two side edges of the bottom surface of the battery box 2 are in contact with and supported by the upper surfaces of the two fixed support bases 1, thereby placing the middle area of ​​its bottom between the two sets of support bases and keeping it suspended.

[0040] Specifically, see Figure 3 The fixed support base 1 includes a horizontal fixed base plate 11, a support upright plate 12, a support plate 13, and multiple reinforcing beams 14. The horizontal fixed base plate 11 is the foundation of the overall structure and is connected and fixed to the vibration table through multiple connecting screw holes. Above the horizontal fixed base plate 11, the support upright plate 12 is arranged along its length and can be fixed to the horizontal fixed base plate 11 by welding or other reliable methods. The support plate 13 is fixedly installed on the top of the support upright plate 12 to directly support the battery box 2. In this embodiment, the horizontal fixed base plate 11, the support upright plate 12, and the support plate 13 together form an "I"-shaped structure, which has good load-bearing capacity and structural stability.

[0041] To further enhance the overall strength and deformation resistance of the fixed support base 1, multiple reinforcing beams 14 are spaced apart along the extension direction on both sides of the support plate 12. Each reinforcing beam 14 is fixedly connected to the support plate 12 on one side, its upper end is tightly abutted and fixed to the support plate 13, and its lower end is tightly connected to the horizontal fixed base plate 11, thus forming a stable triangular support structure on both sides of the support plate 12, significantly improving the rigidity and load-bearing capacity of the overall structure. Specifically, the reinforcing beam 14 is preferably a trapezoidal structure, with its side wall away from the support plate 12 extending outwards from top to bottom, forming an inclined support structure with a certain angle of inclination. This structure not only improves the bending resistance of the reinforcing beam itself but also helps to enhance the overall stability of the fixed support base 1 under large loads, especially under dynamic conditions such as vibration testing, effectively improving the fatigue resistance and deformation resistance of the structure, thereby further ensuring the safety and reliability of the battery pack testing process.

[0042] like Figure 1 and Figure 2As shown, the device also includes a limiting member 3 for fixing the battery compartment 2 to the fixed support base 1. In operation, the battery compartment 2 is first placed on the fixed support base 1, and then pressure is applied to the bottom edge of the battery compartment 2 using the pressing contact 33 of the limiting member 3 to achieve a stable clamping. Subsequently, the limiting member 3 is securely fixed to the fixed support base 1 using fastening bolts, thereby ensuring the stability of the battery compartment 2 during testing. Further reference Figure 4 To prevent damage to the battery compartment 2 during installation and vibration testing, an elastic buffer layer (made of materials such as rubber or silicone) is provided on the contact surface 31 where the limiting member 3 contacts the battery compartment 2. This elastic buffer layer can effectively absorb vibration and alleviate mechanical stress, protecting the battery compartment 2 from direct impact or friction damage. In addition, a transition curved surface 32 is designed at the junction of the battery compartment contact surface 31 and the side wall where they intersect, which can effectively reduce the potential risk of damage to the battery compartment 2 from sharp edges, further enhancing the safety of use.

[0043] Further, see Figure 2 Parallel connecting constraint members 4 are also provided at both ends of the fixed support base 1. Each connecting constraint member 4 is connected to the end of the fixed support base 1 via fasteners 5. The battery compartment 2 is positioned between the two connecting constraint members 4, and each connecting constraint member 4 has an abutment surface 41 for abutting against the side of the battery compartment 2. During testing, this abutment surface 41 provides lateral restraint to the battery compartment 2, preventing displacement or shaking under vibration or other external forces, thereby effectively improving the stability of the overall support structure and the safety of the testing process. Preferably, multiple spacing adjustment holes (not shown in the figure) arranged sequentially along the same horizontal height are also provided on the connecting constraint member 4 to achieve an adjustable connection between the fixed support base 1 and the connecting constraint member 4. Specifically, the two are fixedly connected by fasteners 5 passing through the corresponding spacing adjustment holes, allowing adjustment of the connection position according to actual needs. When the relative spacing between the fixed support bases 1 is adjusted according to the actual size of the battery compartment 2, a suitable spacing adjustment hole can be selected for assembly connection with the connecting constraint member 4, significantly improving the versatility of the connecting constraint member 4.

[0044] This application embodiment also provides a vibration testing fixture for a battery compartment, the fixture including a vibration table and a fixed support base 1 mounted on the vibration table, for installing and fixing the battery compartment vibration testing fixture.

[0045] The above description is merely a preferred embodiment disclosed in this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of protection involved in this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this disclosure.

[0046] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

Claims

1. A vibration testing fixture for a battery compartment, characterized in that: It includes two sets of fixed support bases (1) mounted on a vibration table, with the two sets of fixed support bases (1) respectively supporting the opposite two sides of the bottom surface of the battery box (2), so that the middle area of ​​the battery box (2) is suspended between the two sets of fixed support bases (1); it also includes a plurality of limiting members (3) disposed on the fixed support bases (1) for fixing the battery box (2).

2. The vibration testing fixture for a battery compartment according to claim 1, characterized in that: Each set of fixed support bases (1) includes: The horizontal fixed base plate (11) is installed on the vibration table. A support plate (12) is provided on the horizontal fixed base plate (11) and extends along the length direction of the horizontal fixed base plate (11); Support plate (13), which is installed on the top of the support plate (12) and is used to support the side edge of the battery box (2); And a plurality of reinforcing beams (14) spaced apart along the extension direction of the supporting upright plate (12), one side of the reinforcing beam (14) is connected to the supporting upright plate (12), its top end abuts against the lower surface of the support plate (13), and its bottom end abuts against the upper surface of the horizontal fixed base plate (11).

3. The vibration testing fixture for a battery compartment according to claim 2, characterized in that: The reinforcing beam (14) extends outward from top to bottom at the side wall away from the supporting upright plate (12).

4. The vibration testing fixture for a battery compartment according to claim 1, characterized in that: It also includes two parallel connecting constraints (4), each of which is connected at both ends to the ends of the two sets of fixed support bases (1); the connecting constraints (4) also includes a contact surface (41) for abutting against the side of the battery compartment (2).

5. The vibration testing fixture for a battery compartment according to claim 4, characterized in that: The connecting constraint member (4) has multiple spacing adjustment holes. The fixed support base (1) and the connecting constraint member (4) are connected by fasteners (5) passing through the spacing adjustment holes to adjust the spacing between their relative connection positions.

6. The vibration testing fixture for a battery compartment according to claim 1, characterized in that: The limiting member (3) includes a battery compartment contact surface (31), on which an elastic buffer layer is provided.

7. The vibration testing fixture for a battery compartment according to claim 6, characterized in that: The battery compartment contact surface (31) and the intersecting side wall are provided with transition surfaces (32).

8. A vibration testing fixture for a battery compartment, characterized in that: The device includes a vibration test fixture for a battery compartment as described in any one of claims 1-7, and also includes a vibration table on which the fixed support base (1) is mounted.

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