Battery pack torsion testing device

Abstract

The utility model relates to the technical field of battery testing, and provides a battery pack torsion testing device, which comprises a mounting rack provided with a mounting position for mounting a battery pack. The number of the telescopic assemblies is larger than one, the telescopic assemblies are distributed on the two opposite sides of the installation position, one end of each telescopic assembly is connected to the installation frame through a first rotating joint, the other end of each telescopic assembly is connected to the base through a second rotating joint, and the telescopic assemblies on the two sides stretch out and draw back in a differential mode to drive the installation frame to twist. The utility model can solve the technical problem that the conventional testing device cannot test the torsion working condition of the battery pack.

Description

Technical Field

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

[0002] With the increasing popularity of new energy vehicles, the application of battery packs is also increasing. In order to ensure the service life and safety of battery packs, various test devices have been developed to test the performance of battery packs. However, various test devices currently used to fix the battery packs horizontally. Therefore, their test data can only reflect the performance of the battery packs under horizontal conditions, but cannot reflect the torsional conditions that the battery packs often encounter during actual use, that is, the displacements on the two sides of the battery pack are inconsistent, resulting in the battery pack tilting or even deformation relative to the horizontal plane. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problem that the existing testing device cannot test the torsion condition of the battery pack, and provide a battery pack torsion testing device.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A battery pack torsion test device, comprising:

[0006] A mounting frame, wherein a mounting position for mounting a battery pack is provided on the mounting frame;

[0007] Telescopic components, the number of telescopic components is greater than one, and the telescopic components are distributed on two opposite sides of the installation position. One end of the telescopic component is connected to the mounting frame through a first rotating joint, and the other end of the telescopic component is connected to the base through a second rotating joint. The differential telescopic movement of the telescopic components on both sides can drive the mounting frame to twist.

[0008] The specific structural form of the mounting frame includes but is not limited to plate-shaped, frame-shaped, and seat-shaped components, as long as they can adapt to the shape and size of the battery pack; the connection method between the mounting frame and the battery pack includes but is not limited to bolting, clamping, and concave-convex matching.

[0009] The base is used to contact or connect with the ground or other test platforms, and its specific structural forms include but are not limited to plate-shaped, support-shaped, and leg-shaped; and a single large base can be set for the entire battery pack torsion test device, or an independent base can be set for each telescopic component.

[0010] The specific structural form of the telescopic assembly includes but is not limited to various length-adjustable mechanisms such as cylinders, electric push rods, and magnetic telescopic mechanisms; the telescopic assemblies are distributed on two opposite sides of the installation position, such as on the left and right sides or the front and back sides of the installation position; the differential telescopic extension of the telescopic assemblies on both sides can drive the mounting frame to twist, that is, the axes of the first rotating joint and the second rotating joint are parallel to each other and perpendicular to the plane determined by the telescopic assemblies on both sides, so that the telescopic assembly, the mounting frame, and the base are combined into a planar linkage mechanism similar to a four-bar linkage mechanism. When the telescopic assemblies on both sides extend and retract synchronously, the mounting seat can move closer to or away from the base without changing its posture; when the telescopic assemblies on both sides extend and retract asynchronously, that is, the telescopic distance of the telescopic assembly on one side is greater than that of the other side, the posture of the mounting seat will twist, thereby simulating the torsion condition of the battery pack.

[0011] As mentioned above, the battery pack torsion test device of the present scheme combines the mounting frame, telescopic assembly, and base into a planar linkage mechanism through the first rotating joint and the second rotating joint, which can not only realize the distance adjustment of the mounting frame relative to the base, but also realize the torsion of the mounting frame relative to the base. Therefore, after the battery pack is installed, the torsion condition can be simulated for the battery pack and relevant tests can be carried out, thereby being able to more comprehensively reflect the actual performance of the battery pack under various working conditions.

[0012] As a preferred solution of the utility model, a protrusion is provided on the side of the mounting frame facing the telescopic assembly, and the first rotating joint is connected to the protrusion.

[0013] The specific structural forms of the protrusions include but are not limited to block, plate, box, and column.

[0014] When the mounting frame is twisted relative to the base, the inclination angle of the mounting frame relative to the telescopic assembly will also change, which can easily lead to interference between the mounting frame, the battery pack and the telescopic assembly. In this solution, an additional protrusion is provided between the mounting frame and the telescopic assembly, which can increase the distance between the telescopic assembly and the mounting frame and the battery pack, thereby reducing the possibility of interference between the mounting frame, the battery pack and the telescopic assembly on the one hand, and reducing the required length of the telescopic assembly on the other hand, thereby reducing the difficulty of designing or purchasing the telescopic assembly.

[0015] As a preferred solution of the utility model, the protruding portion includes an I-beam, and two ends of the I-beam are respectively connected to the mounting frame and the first rotating joint.

[0016] The number of I-beams may be equal to or greater than one.

[0017] This proposal recommends one of the specific protrusion structural forms. The I-beam is a mature profile with high rigidity, which can not only reduce the manufacturing cost and difficulty of this proposal, but also ensure the reliable connection between the mounting frame and the telescopic component.

[0018] As a preferred solution of the utility model, connecting plates are provided on the other two sides of the installation position, the width of the connecting plates on both sides matches the width of the battery pack to be tested, and connecting through holes for the battery pack are opened on the connecting plates.

[0019] Connecting plates are provided on the other two sides of the installation position. For example, when the telescopic assembly is located at the front and rear sides of the installation position, the connecting plates are located at the left and right sides of the installation position; when the telescopic assembly is located at the left and right sides of the installation position, the connecting plates are located at the front and rear sides of the installation position.

[0020] This solution can adapt to most existing battery pack designs by providing connecting plates on both sides of the installation position to connect the battery pack; and the connecting plates and telescopic components are staggered, which can reduce the chance of interference between the connecting plates, i.e., the subsequently installed battery packs, and the telescopic components, thereby improving the efficiency of disassembly and assembly of the connecting plates and the battery packs.

[0021] As a preferred solution of the present utility model, the connecting plate and the mounting frame are detachably connected.

[0022] The detachable connection includes but is not limited to threaded connection, mortise and tenon connection, and latch connection.

[0023] This solution recommends that the connecting plate and the mounting frame be detachably connected. On the one hand, it is convenient to replace the connecting plate of corresponding specifications when the size specifications of the battery pack change, so that this solution can adapt to battery packs of different sizes; on the other hand, it is also convenient to remove the connecting plate during transportation, reducing the volume of the mounting frame to reduce the difficulty of transportation.

[0024] As a preferred solution of the utility model, the telescopic assembly and the mounting frame are detachably connected.

[0025] The detachable connection includes but is not limited to threaded connection, mortise and tenon connection, and latch connection.

[0026] This solution recommends that the telescopic component and the mounting frame be detachably connected. On the one hand, it is convenient to replace telescopic components of different sizes to achieve different lifting ranges and torsion angle ranges, thereby adapting to different testing requirements; on the other hand, it is also convenient to remove the telescopic component during transportation, reducing the volume of the mounting frame to reduce the difficulty of transportation.

[0027] As a preferred solution of the utility model, the telescopic assembly includes a hydraulic telescopic rod.

[0028] The telescopic assembly of the present invention uses a hydraulic telescopic rod, which has a greater thrust than other structural forms, such as electric push rods and cylinders, thereby improving the carrying capacity of the present invention and being able to adapt to heavier battery packs.

[0029] As a preferred solution of the utility model, each side telescopic assembly includes at least two hydraulic telescopic rods arranged at intervals.

[0030] This solution sets at least two hydraulic telescopic rods on each side of the installation position. Compared with the solution of setting only one hydraulic telescopic rod on each side, this solution can, on the one hand, perform different degrees of telescopic extension and retraction through four hydraulic telescopic rods to simulate more torsion conditions, and on the other hand, it can reduce the load-bearing capacity required by a single hydraulic telescopic rod, thereby reducing the difficulty of designing or purchasing the hydraulic telescopic rod; at the same time, it is also conducive to more stable self-reliance.

[0031] As a preferred solution of the utility model, a mounting through hole is provided on the base.

[0032] This solution can easily fix the base to the ground or other test platforms through bolts, positioning pins and other connectors, thereby ensuring the stability of this solution.

[0033] As a preferred solution of the present utility model, the mounting frame is a frame-shaped component arranged around the mounting position.

[0034] The mounting frame of the present invention adopts a frame-type structure, which can reduce the material consumption and manufacturing cost of the mounting frame on the one hand, and keep the bottom and top surfaces of the battery pack exposed on the other hand, thereby facilitating inspection or maintenance operations on the bottom and top surfaces of the battery pack.

[0035] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0036] 1. A battery pack torsion testing device of the utility model combines a mounting frame, a telescopic assembly, and a base into a planar connecting rod mechanism through a first rotating joint and a second rotating joint, which can not only realize the distance adjustment of the mounting frame relative to the base, but also realize the torsion of the mounting frame relative to the base. Therefore, after the battery pack is installed, the torsion working condition can be simulated for the battery pack and relevant tests can be carried out, thereby being able to more comprehensively reflect the actual performance of the battery pack under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a three-dimensional structural schematic diagram of a battery pack torsion test device of the utility model;

[0038] Figure 2 It is a schematic diagram of the main structure of a battery pack torsion test device of the utility model;

[0039] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section;

[0040] Figure 4 This is a side view of the structure of a battery pack torsion test device of the utility model. Figure 1 ;

[0041] Figure 5 This is a side view of the structure of a battery pack torsion test device of the utility model. Figure 2 ;

[0042] Icons: 1-mounting frame; 11-protrusion; 12-connecting plate; 2-telescopic assembly; 21-hydraulic telescopic rod; 22-first rotating joint; 23-second rotating joint; 3-base; 4-battery pack. DETAILED DESCRIPTION

[0043] The utility model is described in detail below in conjunction with the accompanying drawings.

[0044] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0045] In the description of the following specific embodiments, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the device / apparatus is usually used. These terms of orientation or position relationship are only for the convenience of description or simplification of the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation of the present invention.

[0046] The terms "horizontal", "vertical" and the like do not require the corresponding devices / components / elements to be absolutely horizontal or vertical or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in specific directions such as "horizontal" and "vertical", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0047] The terms “first”, “second”, “third”, etc. are merely used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0048] The terms "set", "installed", "connected" and "connected" 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 welding, riveting, bolting, threaded connection and other commonly used connection methods in the field. It can be directly connected or indirectly connected through an intermediate medium. It can also be the internal connection of two elements.

[0049] Example 1

[0050] like Figures 1 to 5 As shown, a battery pack torsion test device used in this embodiment includes:

[0051] A mounting frame 1, on which a mounting position for mounting a battery pack 4 is provided;

[0052] Telescopic components 2, the number of telescopic components 2 is greater than one, and the telescopic components 2 are distributed on two opposite sides of the installation position. One end of the telescopic component 2 is connected to the mounting frame 1 through a first rotating joint 22, and the other end of the telescopic component 2 is connected to the base 3 through a second rotating joint 23. The differential telescopic movement of the telescopic components 2 on both sides can drive the mounting frame 1 to twist.

[0053] Specifically, the battery pack 4 to be used in this embodiment is rectangular in shape as a whole, so a corresponding installation position is provided which is rectangular in shape as a whole; Figure 4 As shown, in this embodiment, telescopic components 2 are arranged on the left and right sides of the installation position, and an independent base 3 is arranged at the bottom of each telescopic component 2 to reduce the floor space occupied by the material consumption of the base 3; the first rotating joint 22 and the second rotating joint 23 are both hinge joints, and their axes are perpendicular to the plane determined by the telescopic components 2 on both sides (i.e., perpendicular to the plane). Figure 4 inward or outward direction).

[0054] like Figure 4 The figure shows the case where the extension lengths of the telescopic components 2 on both sides are the same. It can be seen that the angle between the mounting frame 1 and the horizontal plane is 0°. Correspondingly, if the battery pack 4 is installed at this time, the angle between the battery pack 4 and the horizontal plane is also 0°. If it is necessary to twist the mounting frame 1, the telescopic components 2 on both sides can be differentially extended and retracted, for example, Figure 5 In the embodiment, the extended length of the left telescopic component 2 is smaller than the extended length of the right telescopic component 2, so the mounting frame 1 is twisted toward the left; if the mounting frame 1 needs to be twisted toward the right, conversely, the extended length of the left telescopic component 2 is made larger than the extended length of the right telescopic component 2.

[0055] Furthermore, if Figure 1 to Figure 2 As shown, the mounting frame 1 is provided with a protruding portion 11 on one side facing the telescopic assembly 2, and the first rotating joint 22 is connected to the protruding portion 11. Furthermore, the protruding portion 11 includes an I-beam, and the two ends of the I-beam are respectively connected to the mounting frame 1 and the first rotating joint 22.

[0056] Furthermore, connecting plates 12 are provided on the other two sides of the mounting position. The width of the connecting plates 12 on both sides matches the width of the battery pack 4 to be tested. The connecting plates 12 are provided with connecting through holes for the battery pack 4. Figure 2 The left and right sides of the connecting plate 12 are installed at the installation position. Figure 2 The front and back sides (i.e. Figure 3 on the left and right sides of the image).

[0057] Furthermore, the connecting plate 12 and the telescopic assembly 2 are detachably connected to the mounting frame 1. More specifically, in this embodiment, threaded connectors are used to connect the mounting frame 1 and the protruding portion 11, the protruding portion 11 and the first rotating joint 22, and the connecting plate 12 and the mounting frame 1.

[0058] Further, the telescopic assembly 2 includes a hydraulic telescopic rod 21. Further, each side telescopic assembly 2 includes at least two hydraulic telescopic rods 21 arranged at intervals. Figure 1 As shown, in this embodiment, each side telescopic assembly 2 includes two hydraulic telescopic rods 21, and the bottom of the entire mounting frame 1 includes a total of four hydraulic telescopic rods 21, and the four hydraulic telescopic rods 21 are arranged in a rectangular array, so that this embodiment can be stably self-supporting, and can also simulate more torsion conditions, for example, Figure 1 or Figure 2 The two hydraulic telescopic rods 21 on the left side of the middle part remain stationary, while the two hydraulic telescopic rods 21 on the right side are differentially extended and retracted, thereby twisting the right side of the battery pack 4; Figure 1 or Figure 2 The two hydraulic telescopic rods 21 on the right side remain stationary, while the two hydraulic telescopic rods 21 on the left side are differentially telescoped, thereby twisting the left side of the battery pack 4.

[0059] Furthermore, a mounting through hole is provided on the base 3. Figure 1 As shown, the base 3 of this embodiment is a rectangular plate with circular through holes at its four corners, into which threaded connectors can be installed to connect with the ground or other test platforms.

[0060] Furthermore, the mounting frame 1 is a frame-shaped component arranged around the mounting position. Figure 1 As shown, the mounting frame 1 of the present embodiment comprises two lengths of I-beams arranged along the width direction of the battery pack 4, and two lengths of channel steels arranged along the length direction of the battery pack 4. The I-beams and channel steels are assembled together into a rectangular frame. When the battery pack 4 is installed in the frame, the staff can still easily carry out inspection or maintenance work on the top and bottom surfaces.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements 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 torsion test device, characterized in that: Include: A mounting frame (1), wherein a mounting position for mounting a battery pack (4) is provided on the mounting frame (1); A telescopic component (2), the number of the telescopic components (2) is greater than one, the telescopic components (2) are distributed on two opposite sides of the mounting position, one end of the telescopic component (2) is connected to the mounting frame (1) via a first rotating joint (22), and the other end of the telescopic component (2) is connected to the base (3) via a second rotating joint (23), and the differential telescopic movement of the telescopic components (2) on both sides can drive the mounting frame (1) to twist.

2. A battery pack torsion test device according to claim 1, characterized in that: A protruding portion (11) is provided on one side of the mounting frame (1) facing the telescopic assembly (2), and the first rotating joint (22) is connected to the protruding portion (11).

3. A battery pack torsion test device according to claim 2, characterized in that: The protruding portion (11) comprises an I-beam, and two ends of the I-beam are respectively connected to the mounting frame (1) and the first rotating joint (22).

4. A battery pack torsion test device according to claim 1, characterized in that: Connecting plates (12) are arranged on the other two sides of the mounting position, the width of the connecting plates (12) on the two sides matches the width of the battery pack (4) to be tested, and the connecting plates (12) are provided with connecting through holes for the battery pack (4).

5. A battery pack torsion test device according to claim 4, characterized in that: The connecting plate (12) and the mounting frame (1) are detachably connected.

6. A battery pack torsion test device according to any one of claims 1 to 5, characterized in that: The telescopic assembly (2) and the mounting frame (1) are detachably connected.

7. A battery pack torsion test device according to any one of claims 1 to 5, characterized in that: The telescopic assembly (2) comprises a hydraulic telescopic rod (21).

8. A battery pack torsion test device according to claim 7, characterized in that: The telescopic assembly (2) on each side comprises at least two hydraulic telescopic rods (21) arranged at intervals.

9. A battery pack torsion test device according to any one of claims 1 to 5, characterized in that: The base (3) is provided with a mounting through hole.

10. A battery pack torsion test device according to any one of claims 1 to 5, characterized in that: The mounting frame (1) is a frame-shaped component arranged around the mounting position.

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