A testing fixture for battery trays in new energy vehicles

Abstract

This utility model discloses a testing fixture for a new energy vehicle battery tray, including a tray body and a fixing mechanism. The fixing mechanism includes an insert rod, a snap-fit ​​rod, a fixing sleeve, a pressure plate, a slider, a locking block, a locking groove, and a limiting mechanism. The insert rod is located on the outside of the tray body, the snap-fit ​​rod is fixed to the top of the insert rod, the fixing sleeve is inserted into the top of the snap-fit ​​rod, the pressure plate is fixed to the bottom of the fixing sleeve, multiple sets of sliders slide on the outer wall of the fixing sleeve, the locking block is fixed to the bottom of multiple sets of sliders, and the locking groove is located on the outer wall of the snap-fit ​​rod. The fixing mechanism can be quickly inserted into the positioning hole of the base through the insert rod and the snap-fit ​​rod to provide stable support for the tray body. The pressure plate at the bottom of the fixing sleeve applies reliable downward pressure to the surface of the tray body. The slider and locking block system forms a firm connection with the locking groove on the snap-fit ​​rod, ensuring that the battery tray remains stable during testing. This design completely eliminates the traditional bolt connection method.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and more specifically, it relates to a testing fixture for a new energy vehicle battery tray. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the safety and reliability of battery systems, as core components, have become the focus of industry attention. In the battery system production process, the airtightness test of the battery tray is a key link to ensure the safety of the whole vehicle. The existing testing method usually uses a fixed clamp to fix the battery tray on the testing platform and then conducts airtightness testing through special equipment. However, due to the diversification of market demand, there are significant differences in the size, structure and interface position of battery trays of different models and manufacturers. This makes it difficult for traditional fixing mechanisms to adapt to the testing needs of various specifications of products. Technicians often need to change special fixing devices and testing equipment for each type of battery tray, which not only increases the cost of equipment investment, but also leads to low production line efficiency and makes it difficult to meet the requirements of modern production for flexible manufacturing.

[0003] To enhance market competitiveness, new energy vehicle manufacturers are constantly launching new models and optimizing battery system designs, leading to more frequent changes in battery tray specifications. In this rapidly iterating industrial environment, the versatility and adaptability of testing equipment become particularly important. Existing fixed testing equipment often requires large-scale modifications or even redesign and manufacturing when facing product updates, resulting in a huge waste of time and resources. At the same time, frequent equipment switching also increases the risk of operational errors and testing errors, which may lead to quality problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a testing fixture for a new energy vehicle battery tray to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a testing fixture for a new energy vehicle battery tray, comprising a tray body and a fixing mechanism. The fixing mechanism includes an insertion rod, a snap-fit ​​rod, a fixing sleeve, a pressure plate, a slider, a snap-fit ​​block, a snap-fit ​​groove, and a limiting mechanism. The insertion rod is disposed on the outside of the tray body, the snap-fit ​​rod is fixed to the top of the insertion rod, the fixing sleeve is inserted into the top of the snap-fit ​​rod, the pressure plate is fixed to the bottom of the fixing sleeve, multiple sets of sliders slide on the outer wall of the fixing sleeve, the snap-fit ​​block is fixed to the bottom of multiple sets of sliders, and the snap-fit ​​groove is disposed on the outer wall of the snap-fit ​​rod. The limiting mechanism includes a push block, a limiting sleeve, a connecting sleeve, an mounting block, a limiting rod, a rotating sleeve, a longitudinal rod, and an insertion hole. The push block is fixed to the top of multiple sets of sliders, the limiting sleeve is disposed on the outside of the fixing sleeve, the connecting sleeve is fixed to the bottom of the limiting sleeve, multiple sets of mounting blocks are fixed to the outer wall of the connecting sleeve, the limiting rod is fixed to the outer wall of multiple sets of mounting blocks, the rotating sleeve rotates on the outer wall of the fixing sleeve, multiple sets of longitudinal rods are fixed to the outer wall of the rotating sleeve, and multiple sets of insertion holes are distributed on the outer wall of multiple sets of longitudinal rods.

[0008] The present invention is further configured such that a base is provided below the tray body, and positioning holes are provided on the base. Multiple sets of positioning holes are provided, and multiple sets of fixing mechanisms are respectively provided on the outside of the tray body. Multiple sets of the insertion rods are respectively inserted into multiple sets of positioning holes. This design realizes the rapid alignment and positioning of the tray body and the base, ensuring the accuracy and repeatability of the fixed position. At the same time, multi-point fixing provides a balanced distribution of support force, preventing the tray body from deforming or displacing during the test.

[0009] The present invention is further provided that each of the multiple sets of insertion rods has a base plate fixedly provided at its bottom end. The base plate increases the contact area between the insertion rod and the base, improves the support stability, prevents the insertion rod from sinking or tilting when under pressure, and also facilitates the positioning and installation of the insertion rod, reducing the difficulty of operation.

[0010] The present invention is further configured such that a sliding hole is provided in the snap-fit ​​rod, a top block is slidably provided in the sliding hole, and a compression spring is connected between the top block and the bottom surface of the sliding hole. The compression spring and the top block combine to form an elastic buffer mechanism, which can compensate for the size difference of the tray body with different thicknesses, ensure uniform pressure distribution, and provide automatic push-out force during disassembly, thus simplifying the operation process.

[0011] The present invention is further configured such that the outer wall of the fixed sleeve is provided with a movable groove, and the movable groove is provided in multiple sets and is slidably connected to multiple sets of push blocks respectively. The movable groove provides a precise guide track for the push blocks, ensuring that the radial movement of the push blocks is stable and controllable, preventing deviation during locking and unlocking, and improving the reliability and accuracy of the locking mechanism.

[0012] The present invention is further configured such that a push spring is connected between the inner wall of each of the multiple sets of push blocks and the movable groove. The push spring provides a continuous restoring force to the push block, so that the push block is naturally in a contracted state when it is not subjected to external force. When the lock is released, the push block can be automatically pushed to reset, causing the card block to disengage from the card groove, thereby realizing the automatic unlocking function and simplifying the operation steps.

[0013] The present invention is further configured such that a slide bar is fixedly provided on the inner wall of the fixed sleeve, and a slot is provided on the outer wall of the insertion rod. Multiple sets of slide bars and slots are provided and are inserted into each other. The cooperative design of the slide bars and slots forms an anti-rotation orientation mechanism, ensuring that the fixed sleeve can only move along the axial direction and will not rotate, thus ensuring parallel contact between the pressure plate and the surface of the tray body, improving the fixing effect and service life.

[0014] The present invention is further configured such that the spacing between the multiple sets of positioning holes is set to be the same, and the evenly distributed positioning holes form a standardized interface system that can adapt to battery trays of different specifications. The position of the fixing point can be adjusted without changing the base, which greatly enhances the versatility and adaptability of the testing fixture and reduces equipment costs and changeover time.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a testing fixture for battery trays in new energy vehicles, which has the following beneficial effects:

[0017] 1. The fixing mechanism can be quickly inserted into the positioning hole of the base through the insertion rod and the snap-fit ​​rod to provide stable support for the tray body. The pressure plate at the bottom of the fixing sleeve applies reliable downward pressure to the surface of the tray body. The slider and snap-fit ​​system forms a firm connection with the snap-fit ​​groove on the snap-fit ​​rod to ensure that the battery tray remains stable during the test. This design completely eliminates the traditional bolt connection method and realizes the operation method of fixing battery trays of different sizes without tools. Multiple fixing mechanisms are set on the outside of the tray body to provide evenly distributed clamping force, which significantly improves the ability of the test fixture to adapt to battery trays of various specifications without the need to replace the entire set of test equipment.

[0018] 2. The limiting mechanism, through the combination of push block, limiting sleeve, connecting sleeve and rotating component, introduces a precise control system. The rotating sleeve design allows the entire device to be locked or unlocked through simple rotation, converting rotational motion into precise locking action. The limiting rod on the mounting block cooperates with the insertion hole on the longitudinal rod to form a reliable mechanical interlock, preventing accidental loosening during testing. The spring-loaded push block provides continuous pressure to the slider, ensuring that the locking block is firmly embedded in the slot until intentionally released. This integrated limiting structure solves the technical problem of quickly switching between different battery tray specifications, greatly reduces setup time, eliminates the need for special tools, and thus improves the efficiency and flexibility of the production line when testing various battery tray models.

[0019] 3. The evenly distributed positioning holes on the base provide a standardized interface for the test fixture, enabling precise alignment and positioning of battery trays of different sizes. The base plate fixed at the bottom of the insertion rod ensures stable contact with the base, preventing shaking or misalignment during testing. The slide bar and slot design facilitates smooth assembly and disassembly of the fixture components and allows for quick adjustments when switching between different battery tray models. This multi-functional positioning system eliminates the need for multiple dedicated fixtures for different battery tray specifications, significantly reducing equipment investment costs and setup time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a testing fixture for a new energy vehicle battery tray according to the present invention.

[0021] Figure 2 This is a schematic diagram of the disassembly structure of the tray body in this utility model;

[0022] Figure 3 This is a schematic diagram of the limiting mechanism in this utility model;

[0023] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0024] Figure 5 This is a schematic diagram of the insert rod in this utility model.

[0025] In the diagram: 1. Tray body; 2. Insert rod; 3. Snap-fit ​​rod; 4. Fixing sleeve; 5. Pressure plate; 6. Slider; 7. Locking block; 8. Locking groove; 9. Push block; 10. Limiting sleeve; 11. Connecting sleeve; 12. Mounting block; 13. Limiting rod; 14. Rotating sleeve; 15. Longitudinal rod; 16. Insertion hole; 17. Positioning hole; 18. Base plate; 19. Sliding hole; 20. Top block; 21. Compression spring; 22. Movable groove; 23. Push spring; 24. Sliding bar; 25. Slot; 30. Base. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A testing fixture for a new energy vehicle battery tray includes a tray body 1 and a fixing mechanism. The fixing mechanism includes an insert rod 2, a snap-fit ​​rod 3, a fixing sleeve 4, a pressure plate 5, a slider 6, a locking block 7, a locking groove 8, and a limiting mechanism. The insert rod 2 is located on the outside of the tray body 1. The snap-fit ​​rod 3 is fixed to the top of the insert rod 2. The fixing sleeve 4 is inserted into the top of the snap-fit ​​rod 3. The pressure plate 5 is fixed to the bottom of the fixing sleeve 4. The slider 6 has multiple sets that slide on the outer wall of the fixing sleeve 4. The locking block 7 is fixed to the bottom of multiple sets of sliders 6. The locking groove 8 is located on the outer wall of the snap-fit ​​rod 3. The limiting mechanism includes a push block 9. The set includes a limiting sleeve 10, a connecting sleeve 11, a mounting block 12, a limiting rod 13, a rotating sleeve 14, a longitudinal rod 15, and a socket 16. The push block 9 is fixed to the top of multiple sets of sliders 6. The limiting sleeve 10 is located on the outside of the fixed sleeve 4. The connecting sleeve 11 is fixed to the bottom of the limiting sleeve 10. Multiple sets of mounting blocks 12 are fixed to the outer wall of the connecting sleeve 11. The limiting rod 13 is fixed to the outer wall of multiple sets of mounting blocks 12. The rotating sleeve 14 rotates on the outer wall of the fixed sleeve 4. Multiple sets of longitudinal rods 15 are fixed to the outer wall of the rotating sleeve 14. Multiple sets of sockets 16 are distributed on the outer wall of multiple sets of longitudinal rods 15.

[0030] The tray body 1 is provided with a base 30 below it. The base 30 has positioning holes 17. Multiple sets of positioning holes 17 are provided. Multiple sets of fixing mechanisms are provided on the outside of the tray body 1. Multiple sets of insertion rods 2 are inserted into the multiple sets of positioning holes 17. This design constitutes a distributed fixing system. Multiple sets of positioning holes 17 provide precise positioning points for the insertion rods 2, ensuring that the tray body 1 can be fixed at multiple points on the base, forming a stable support structure, preventing shaking or displacement during the test, and facilitating quick positioning and installation by operators.

[0031] Each set of insertion rods 2 has a base plate 18 fixed at its bottom end. The base plate 18 increases the contact area between the insertion rod 2 and the base, forming a stable support platform. This prevents the insertion rod 2 from sinking into the positioning hole 17 or tilting and deforming when subjected to downward pressure. It also serves as a limit to ensure that the insertion depth of the insertion rod 2 is appropriate and to guarantee the structural stability of the entire fixing system.

[0032] The snap-fit ​​rod 3 has a sliding hole 19, and a top block 20 is slidably disposed in the sliding hole 19. A compression spring 21 is connected between the top block 20 and the bottom surface of the sliding hole 19. This is an elastic compensation mechanism. When the fixing sleeve 4 is inserted into the snap-fit ​​rod 3, the top block 20 is squeezed and moves downward along the sliding hole 19 and compresses the compression spring 21. The compression spring 21 stores energy to provide a continuous upward thrust, ensuring that the fixing sleeve 4 can be automatically pushed out during disassembly. At the same time, it can also adapt to the size differences of the tray body 1 with different thicknesses.

[0033] The outer wall of the fixed sleeve 4 is provided with a movable groove 22. Multiple movable grooves 22 are provided and are slidably connected to multiple sets of push blocks 9 respectively. The movable groove 22 provides a precise radial movement track for the push block 9, restricting the push block 9 to move only in the radial direction without deflection, ensuring stable and reliable force transmission between the push block 9 and the slider 6, so that the locking block 7 can be accurately inserted into the locking groove 8 to form a lock.

[0034] Push springs 23 are connected between the inner walls of multiple push blocks 9 and the movable grooves 22. As an automatic reset device, after the limit sleeve 10 releases the pressure on the push block 9, the push block 9 is pushed outward by elastic release, thereby driving the slider 6 and the locking block 7 to disengage from the locking groove 8, realizing the automatic unlocking function, simplifying the operation process and improving work efficiency.

[0035] The inner wall of the fixed sleeve 4 is fixedly provided with a slide bar 24, and the outer wall of the insertion rod 2 is provided with a slot 25. Multiple sets of slide bars 24 and slots 25 are provided and are inserted into each other. The slide bars 24 and slots 25 form a keyway fit structure to prevent the fixed sleeve 4 from rotating relative to the insertion rod 2, ensuring that the fixed sleeve 4 can only move along the axial direction. It also provides an assembly guide function, enabling the operator to quickly and accurately install the fixed sleeve 4 onto the insertion rod 2.

[0036] The spacing between multiple sets of positioning holes 17 is set to be the same, and the evenly distributed positioning holes 17 form a modular interface system. Through standardized spacing design, the testing fixture can adapt to battery trays of different sizes. Operators can select the appropriate combination of positioning holes 17 according to the size of the tray body 1 and adjust the position of the fixing point without changing the base.

[0037] In this embodiment, when it is necessary to fix the tray body 1, the tray body 1 is placed on the top surface of the base 30, the insertion rod 2 is inserted into the positioning hole 17, and then the fixing sleeve 4 and the snap-fit ​​rod 3 are inserted, so that the pressure plate 5 abuts against the top surface of the tray body 1. At this time, the top block 20 abuts against the inner wall of the fixing sleeve 4 and squeezes the compression spring 21, pushing the limiting sleeve 10 to abut against the outer wall of the multiple sets of push blocks 9. At the same time, the multiple sets of push blocks 9 are pushed to slide along the movable groove 22 and squeeze the push spring 23. The push block 9 pushes the slider 6 to slide along the fixing sleeve 4. The multiple sets of sliders 6 push the snap-fit ​​block 7 to engage in the snap-fit ​​groove 8 to engage the snap-fit ​​rod 3. At this time, the multiple sets of limiting rods 13 are parallel to the insertion hole 16. The rotating sleeve 14 drives the multiple sets of longitudinal rods 15 to rotate, so that the multiple sets of limiting rods 13 are inserted into the insertion hole 16, thereby limiting the connecting sleeve 11 and the limiting sleeve 10. The multiple sets of fixing mechanisms are operated in sequence to abut and fix the four corners of the tray body 1.

[0038] More specifically, when the tray body 1 needs to be disassembled, rotating the rotating sleeve 14 drives multiple sets of longitudinal rods 15 to rotate, causing multiple sets of insertion holes 16 to separate from multiple sets of multiple limit rods 13, thereby releasing the limit sleeve 10, pushing the limit sleeve 10 to release the contact with multiple sets of push blocks 9, and pushing the push blocks 9 to slide outward through the elastic reset of multiple sets of push springs 23, pulling the locking block 7 out of the locking groove 8 through multiple sets of sliders 6, releasing the locking of the locking rod 3, and pushing the insertion rod 2 out of the positioning hole 17 through the reset of the compression spring 21, while releasing the contact of the pressure plate 5 with the top surface of the tray body 1.

[0039] In summary, during the use or operation of the overall equipment: when it is necessary to fix the pallet body 1, place the pallet body 1 on the top surface of the base 30, insert the insertion rod 2 into the positioning hole 17, and then insert the fixing sleeve 4 and the snap-fit ​​rod 3, so that the pressure plate 5 abuts against the top surface of the pallet body 1. At this time, the top block 20 abuts against the inner wall of the fixing sleeve 4 and squeezes the compression spring 21, pushing the limiting sleeve 10 to abut against the outer wall of the multiple sets of push blocks 9, and at the same time pushing the multiple sets of push blocks 9 to slide along the movable groove 22. The push spring 23 is compressed, the push block 9 pushes the slider 6 to slide along the fixed sleeve 4, and the multiple sliders 6 push the locking block 7 to engage in the slot 8 to engage the locking rod 3. At this time, the multiple limiting rods 13 are parallel to the insertion hole 16. The rotating sleeve 14 drives the multiple longitudinal rods 15 to rotate so that the multiple limiting rods 13 are inserted into the insertion hole 16, thereby limiting the connecting sleeve 11 and the limiting sleeve 10. The multiple fixing mechanisms are operated in sequence to abut and fix the four corners of the tray body 1.

[0040] When the tray body 1 needs to be disassembled, rotating the rotating sleeve 14 drives multiple sets of longitudinal rods 15 to rotate, causing multiple sets of insertion holes 16 to separate from multiple sets of multiple limit rods 13, thereby releasing the limit sleeve 10, pushing the limit sleeve 10 to release the contact with multiple sets of push blocks 9, and pushing the push blocks 9 to slide outward through the elastic reset of multiple sets of push springs 23, pulling the locking block 7 out of the locking groove 8 through multiple sets of sliders 6, releasing the locking of the locking rod 3, and pushing the insertion rod 2 out of the positioning hole 17 through the reset of the compression spring 21, while releasing the contact of the pressure plate 5 with the top surface of the tray body 1.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A testing fixture for a new energy vehicle battery tray, comprising a tray body (1) and a fixing mechanism, characterized in that: The fixing mechanism includes a plug rod (2), a snap-fit ​​rod (3), a fixing sleeve (4), a pressure plate (5), a slider (6), a locking block (7), a slot (8), and a limiting mechanism. The plug rod (2) is located on the outside of the tray body (1). The snap-fit ​​rod (3) is fixed to the top of the plug rod (2). The fixing sleeve (4) is inserted into the top of the snap-fit ​​rod (3). The pressure plate (5) is fixed to the bottom of the fixing sleeve (4). The slider (6) has multiple sets of sliding on the outer wall of the fixing sleeve (4). The locking block (7) is fixed to the bottom of the multiple sets of sliders (6). The slot (8) is located on the outer wall of the snap-fit ​​rod (3). The limiting mechanism includes a push block (9), a limiting sleeve (10), and a connecting sleeve (1). 1) Mounting block (12), limiting rod (13), rotating sleeve (14), longitudinal rod (15) and insertion hole (16), push block (9) is fixed on the top of multiple sets of sliders (6), limiting sleeve (10) is set on the outside of fixed sleeve (4), connecting sleeve (11) is fixed on the bottom of limiting sleeve (10), mounting block (12) is set with multiple sets fixed on the outer wall of connecting sleeve (11), limiting rod (13) is fixed on the outer wall of multiple sets of mounting block (12), rotating sleeve (14) rotates on the outer wall of fixed sleeve (4), longitudinal rod (15) is set with multiple sets fixed on the outer wall of rotating sleeve (14), insertion hole (16) is set with multiple sets distributed on the outer wall of multiple sets of longitudinal rod (15).

2. The testing fixture for a new energy vehicle battery tray according to claim 1, characterized in that: The tray body (1) is provided with a base (30) below it. The base (30) is provided with positioning holes (17). There are multiple sets of positioning holes (17). There are multiple sets of fixing mechanisms respectively located on the outside of the tray body (1). Multiple sets of the insertion rods (2) are respectively inserted into the multiple sets of positioning holes (17).

3. The testing fixture for a new energy vehicle battery tray according to claim 2, characterized in that: Each of the multiple sets of insertion rods (2) has a base plate (18) fixedly installed at its bottom end.

4. The testing fixture for a new energy vehicle battery tray according to claim 3, characterized in that: The snap-fit ​​rod (3) has a sliding hole (19) inside, and a top block (20) is slidably provided inside the sliding hole (19). A compression spring (21) is connected between the top block (20) and the bottom surface of the sliding hole (19).

5. The testing fixture for a new energy vehicle battery tray according to claim 4, characterized in that: The outer wall of the fixed sleeve (4) is provided with a movable groove (22), and the movable groove (22) is provided in multiple sets and is slidably connected to multiple sets of push blocks (9).

6. The testing fixture for a new energy vehicle battery tray according to claim 5, characterized in that: multiple sets Push springs (23) are provided between the inner wall of the push block (9) and the movable groove (22).

7. The testing fixture for a new energy vehicle battery tray according to claim 6, characterized in that: The inner wall of the fixed sleeve (4) is fixedly provided with a slide bar (24), and the outer wall of the insertion rod (2) is provided with a slot (25). The slide bar (24) and the slot (25) are provided in multiple sets and are inserted into each other.

8. The testing fixture for a new energy vehicle battery tray according to claim 7, characterized in that: The spacing between the multiple sets of positioning holes (17) is set to be the same.

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