Battery cover plate torsion detection tool

Abstract

The utility model discloses a battery cover plate torsion detection frock relates to power battery structural member performance detection technical field, and this battery cover plate torsion detection frock includes: frock board, frock board is equipped with two terminal fixed blocks, and with terminal fixed block sliding connection, and terminal sets up between two terminal fixed blocks, and the first through -hole of strip shape is seted up to the sliding direction of terminal fixed block along frock board, and the bolt is seted up between terminal fixed block and frock board, and the bolt passes through first through -hole, is used for with frock board opposite fixed terminal fixed block. When replacing different kinds of battery cover plate and test, only need to adjust the relative position of two terminal fixed blocks and frock board to adapt to the terminal of different size, and then improve the adaptability of this battery cover plate torsion detection frock, and the cost is lower compared to individual customization, and the frock storage amount in laboratory is reduced, and laboratory management is facilitated, and the cost of product performance test is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of performance testing technology for power battery structural components, and in particular to a tooling for testing the torque of a battery cover plate. Background Technology

[0002] Power batteries are batteries used to provide electricity and are widely used in electric vehicles, energy storage systems, and other devices requiring high power output. Compared to traditional small electronic batteries, power batteries have higher capacity and power output, enabling them to support longer operating times. The power battery cover is a crucial component of the power battery module or battery pack, primarily serving to protect, electrically isolate, seal, and structurally secure the battery. During the manufacturing process, torsion testing is required on the power battery cover to ensure structural stability, safety, and proper protection of the battery.

[0003] Under the current circumstances, due to the variety of battery cover structures and terminal sizes, torque testing fixtures need to be customized separately. This not only makes laboratory management inconvenient due to the variety of types, but also increases the cost of product performance testing. Utility Model Content

[0004] This invention provides a battery cover torque testing fixture, which can solve the problems mentioned in the background art of having many types of torque testing fixtures that are inconvenient for laboratory management and increase testing costs.

[0005] A torque testing fixture for battery cover plates, suitable for battery cover plates, wherein the battery cover plates are provided with terminals; Includes: a tooling plate, wherein two terminal fixing blocks are sleeved on the tooling plate and slidably connected to the terminal fixing blocks, and the terminal is disposed between the two terminal fixing blocks; The tooling plate has a long strip-shaped first through hole along the sliding direction of the terminal fixing block; A bolt is provided between the terminal fixing block and the tooling plate. The bolt passes through the first through hole and is used to fix the terminal fixing block and the tooling plate relative to each other.

[0006] Preferably, the terminal fixing block has a through cavity extending through both sides.

[0007] Preferably, the through cavity has a second through hole extending upwards.

[0008] Preferably, the through cavity has a third through hole extending downwards.

[0009] Preferably, the second through hole and the third through hole correspond one-to-one in the vertical direction, and the corresponding second through hole and the third through hole are coaxially arranged.

[0010] Preferably, the inner diameter of the second through hole is larger than the inner diameter of the third through hole.

[0011] Preferably, the second through hole is a threaded hole.

[0012] Preferably, the bolt is provided with a bolt head and a threaded rod, and the bolt head and the threaded rod are integrally formed.

[0013] Preferably, the bolt head is located in the second through hole, and the outer diameter of the bolt head is adapted to the inner diameter of the second through hole.

[0014] Preferably, the screw and the terminal fixing block are threadedly connected at the third through hole.

[0015] The beneficial effects of this utility model are: In this battery cover torque testing fixture, the terminal fixing block is placed on the fixture plate. The terminal fixing block is slid until it reaches the appropriate position. Then, a bolt is passed through the terminal fixing block and the first through hole to fix and lock the terminal fixing block and the fixture plate, so that the two terminal fixing blocks clamp the terminal. Accordingly, the battery cover is fixed. After the battery cover is fixed by the fixture, the subsequent battery cover torque test can be performed.

[0016] When testing different types of battery covers, only the relative positions of the two terminal fixing blocks and the fixture plate need to be adjusted to accommodate the terminals of different battery cover sizes. That is, since the terminal lengths of different battery cover sizes vary, the distance between the two terminal fixing blocks needs to be adjusted to match the terminal dimensions of different battery cover sizes. This improves the adaptability of the battery cover torque testing fixture, is less expensive than custom-made fixtures, reduces the amount of fixture storage in the laboratory, facilitates laboratory management, and further reduces the cost of product performance testing. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a battery cover torque testing fixture provided by this utility model; Figure 2 Exploded view of a battery cover torque testing fixture provided by this utility model; Figure 3 for Figure 2 Schematic diagram of the middle terminal fixing block; Figure 4 for Figure 2 Schematic diagram of the structure of the intermediate tooling plate; Figure 5 A cross-sectional view of a battery cover torque testing fixture provided by this utility model; Figure 6 This is a schematic diagram of a battery cover torque testing fixture in working condition, provided by this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Tooling plate; 11. First through hole; 2. Terminal fixing block; 21. Through cavity; 22. Second through hole; 23. Third through hole; 3. Bolt. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] This utility model proposes a torque testing fixture for battery cover plates, applicable to battery cover plates with terminals. The terminals of the battery cover plate are components used for electrical connections in battery modules or battery packs, and are typically located on the top or side of the battery cover plate.

[0021] Battery cover terminals provide electrical connection points between the battery pack and external circuitry, typically connecting to the Battery Management System (BMS) or other electrical components within the battery module. Battery cover terminals are usually encased in insulating material to prevent short circuits and protect the terminals from contact with other battery components. This ensures the safe operation of the battery pack. Battery cover terminals are typically secured to the cover using screws, clips, or other fasteners to ensure the stability of the connection and prevent loosening or detachment.

[0022] The battery cover terminals are designed to withstand long-term current and voltage to ensure stability during battery charging and discharging. Battery packs may generate heat under high load or high current conditions; therefore, the battery cover terminals need excellent heat dissipation to prevent overheating. To protect the battery system from external environmental influences, the battery cover terminals typically also need to be waterproof and dustproof.

[0023] like Figure 1 As shown, the battery cover torque testing fixture includes: a fixture plate 1, which is fitted with two terminal fixing blocks 2 and is slidably connected to the terminal fixing blocks 2, with the terminals disposed between the two terminal fixing blocks 2.

[0024] Specifically, such as Figure 2 , Figure 4 As shown, the fixture plate 1 has an elongated first through hole 11 along the sliding direction of the terminal fixing block 2. Two first through holes 11 are provided, and the two first through holes 11 are symmetrically arranged. A hexagonal prism is provided at the center of the fixture plate 1 for connecting the socket and torque wrench in the subsequent testing process.

[0025] Furthermore, such as Figures 2-3As shown, the terminal fixing block 2 has a through cavity 21 extending through both sides, giving the terminal fixing block 2 a plate-like structure with upper and lower layers. The through cavity 21 has a second through hole 22 extending upwards and a third through hole 23 extending downwards. The second through hole 22 is a conventional hole with a smooth inner wall and is also a threaded hole.

[0026] The inner diameter of the second through hole 22 is larger than the inner diameter of the third through hole 23. The second through hole 22 and the third through hole 23 correspond one-to-one in the vertical direction, and the corresponding second through hole 22 and third through hole 23 are coaxially arranged.

[0027] In this embodiment, as Figures 2-5 As shown, a bolt 3 is provided between the terminal fixing block 2 and the tooling plate 1. The bolt 3 passes through the first through hole 11 and is used to fix the terminal fixing block 2 and the tooling plate 1 relative to each other.

[0028] The bolt 3 has a bolt head and a threaded rod, which are integrally formed. The bolt head is located in the second through hole 22, and the outer diameter of the bolt head matches the inner diameter of the second through hole 22. The threaded rod is threadedly connected to the terminal fixing block 2 at the third through hole 23.

[0029] It should be noted that the width of the first through hole 11 is smaller than the diameter of the second through hole 22, so that the bolt head can always be located above the first through hole 11 without falling off.

[0030] In use, the terminal fixing block 2 is placed on the tooling plate 1, so that the tooling plate 1 passes through the through cavity 21. The terminal fixing block 2 is slid until it slides to the appropriate position. Then, the bolts 3 are used to fix and lock the tooling plate 1 and the terminal fixing block 2, so that the two terminal fixing blocks 2 clamp the terminal. Accordingly, the battery cover is fixed. After the battery cover is fixed by the tooling, the subsequent battery cover torque test can be performed.

[0031] During tightening, the screw portion of bolt 3 is inserted into the second through hole 22, passes through the first through hole 11, and enters the third through hole 23. The bolt head of bolt 3 is rotated to screw the screw portion into the third through hole 23 until the bolt head is embedded in the second through hole 22 and presses down on the fixture plate 1. At this time, the fixture plate 1 is clamped between the bolt head and the lower plate of the terminal fixing block 2, achieving relative fixation between the fixture plate 1 and the terminal fixing block 2, so that the two terminal fixing blocks 2 clamp the terminal and the battery cover plate connected to the terminal.

[0032] In this application, since the lengths of the terminals vary depending on the type of battery cover, it is necessary to adjust the distance between the two terminal fixing blocks 2 to match the terminal dimensions of different battery cover sizes. When testing different types of battery covers, only the relative positions of the two terminal fixing blocks 2 and the fixture plate 1 need to be adjusted to accommodate the terminals of different battery cover sizes. This enables torque testing of different types of battery covers, improving the adaptability of the battery cover torque testing fixture. Operationally, it is simple and easy to use; in terms of cost, it is lower than custom-made fixtures, reducing the amount of fixture storage in the laboratory, facilitating laboratory management, and further reducing the cost of product performance testing.

[0033] like Figure 6 As shown, since the two terminal fixing blocks 2 clamp the terminals, and the battery cover is fixed by an external bracket, during the battery cover torque test, the hexagonal prism in the middle of the tooling plate 1 is rotated by a torque wrench, and the entire tooling plate 1 and terminal fixing blocks 2 are twisted. The deformation of the battery cover is observed, thereby determining whether the battery cover torque test meets the standard.

[0034] It is understandable that when the bolt head contacts the tooling plate 1, the tooling plate 1 will not shift due to the rotation of the bolt 3, because the weight of the tooling plate 1 is much greater than the friction between it and the bolt head, so the effect of friction can be ignored.

[0035] Working principle: The terminal fixing block 2 is placed on the tooling plate 1, allowing the tooling plate 1 to pass through the through cavity 21. The terminal fixing block 2 is slid until it reaches the appropriate position. Then, the tooling plate 1 and the terminal fixing block 2 are fixed and locked using bolts 3. During locking, the screw part of the bolt 3 is inserted into the second through hole 22, passes through the first through hole 11, and enters the third through hole 23. The bolt head of the bolt 3 is rotated, causing the screw part to be screwed into the third through hole 23, until the bolt head is embedded in the second through hole 22 and presses down on the tooling plate 1. At this time, the tooling plate 1 is clamped between the bolt head and the lower plate of the terminal fixing block 2, achieving relative fixation between the tooling plate 1 and the terminal fixing block 2. This fixes the battery cover connected to the terminal fixing block 2, allowing for subsequent battery cover torque testing.

[0036] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A battery cover plate torsion detection tool suitable for a battery cover plate provided with a terminal, characterized in that, include: Tooling plate (1), the tooling plate (1) is fitted with two terminal fixing blocks (2) and is slidably connected to the terminal fixing blocks (2), the terminal is disposed between the two terminal fixing blocks (2); The tooling plate (1) has a long strip-shaped first through hole (11) along the sliding direction of the terminal fixing block (2). A bolt (3) is provided between the terminal fixing block (2) and the tooling plate (1). The bolt (3) passes through the first through hole (11) and is used to fix the terminal fixing block (2) and the tooling plate (1) relative to each other.

2. The battery cover plate torsion detection tool of claim 1, wherein, The terminal fixing block (2) has a through cavity (21) that extends through both sides.

3. The battery cover plate torsion detection tool of claim 2, wherein, The through cavity (21) has a second through hole (22) opening upwards.

4. The battery cover plate torsion detection tool of claim 3, wherein, The through cavity (21) has a third through hole (23) opening downwards.

5. The battery cover plate torsion detection tool of claim 4, wherein, The second through hole (22) and the third through hole (23) correspond one-to-one in the vertical direction, and the corresponding second through hole (22) and the third through hole (23) are coaxially arranged.

6. The battery cover plate torsion detection tool of claim 4, wherein, The inner diameter of the second through hole (22) is larger than the inner diameter of the third through hole (23).

7. The battery cover plate torsion detection tool of claim 4, wherein, The second through hole (22) is a threaded hole.

8. The battery cover plate torsion detection tool of claim 4, wherein, The bolt (3) is provided with a bolt head and a screw, and the bolt head and the screw are integrally formed.

9. The battery cover plate torsion detection tool of claim 8, wherein, The bolt head is located in the second through hole (22), and the outer diameter of the bolt head is adapted to the inner diameter of the second through hole (22).

10. The battery cover plate torsion detection tool of claim 8, wherein, The screw and the terminal fixing block (2) are threaded together at the third through hole (23).

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