Battery cell limiting jig

Abstract

The utility model discloses a battery cell limiting jig, which relates to the technical field of battery cell limiting and comprises a base, a driving groove is formed in the center of the interior of the base, two open grooves are formed in two sides of the interior of the base, the two open grooves are formed in two sides of the driving groove, and a same driving assembly is arranged between the two driving grooves. The battery cell fixing device comprises a base and is used for limiting battery cells of different sizes, a plurality of limiting assemblies are arranged at the two ends of the top of the base, each limiting assembly comprises a U-shaped frame, each U-shaped frame is arranged at one end of the top of the base, and fixing cylinders are fixedly arranged at the front end and the rear end of the interior of each U-shaped frame. The two ends of the battery cell are respectively clamped between the arc-shaped limiting frames on the two sides, and the threaded rod rotates to drive the two connecting rods to be close to or far away from each other, so that the battery cells with different sizes can be conveniently limited, accurately positioned and subsequently processed, the battery cells are prevented from deviating, and the application range is expanded.

Description

Technical Field

[0001] This utility model relates to the field of battery cell limiting technology, specifically a battery cell limiting fixture. Background Technology

[0002] A battery cell is the most basic component of a battery, typically an electrochemical device encapsulated in a metal casing. It is the unit that stores and releases electrical energy, converting chemical energy into electrical energy through a chemical reaction. During the production process, positioning fixtures are used to fix the battery cell in place, ensuring it is in the correct position and preventing subsequent processes from failing or quality problems caused by positional deviations.

[0003] For example, a battery cell limiting fixture according to Chinese patent application number CN202120613682.9 includes a support base and a pressure cap. The upper side of the support base is provided with a battery cell receiving groove and two electrode receiving grooves. The pressure cap is located on the upper side of the support base and is provided with a pressing structure. The pressing structure includes two pressing blocks, both of which are located on the lower side of the pressure cap, with the bottoms of the two pressing blocks respectively located in the two electrode receiving grooves. In use, the pressure cap is lifted, and then the battery cell to be processed is placed in the battery cell receiving groove, with the two electrodes respectively placed in the two electrode receiving grooves. Then the pressure cap is lowered, and a four-column hydraulic press or other device is used to press the pressure cap downward to flatten the battery cell. By setting the battery cell receiving groove, the battery cell can be accurately positioned in the battery cell receiving groove, preventing the battery cell from shifting. By setting the electrode receiving groove and the two pressing blocks, the two pressing blocks can limit the electrode of the battery cell, making the position of the electrode accurate.

[0004] However, in practical use, the aforementioned device (CN214505547U) is mainly used in conjunction with large equipment for cell flattening and shaping. In this scenario, although the rigid fixation can withstand enormous downward pressure, its fixed size of the cell receiving slot means it cannot accommodate cells with different dimensional tolerances.

[0005] 1. When the cell size is too small, a gap will be generated in the rigid groove. In conventional processes that are not flattened (such as welding, assembly, and testing), the cell is prone to slight shaking and displacement due to the gap.

[0006] 2. If the battery cell size is too large, it cannot be installed.

[0007] Therefore, existing technologies lack effective solutions for adaptive positioning of multi-size cells under non-high-voltage operating conditions. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a battery cell limiting fixture. By clamping the two ends of the battery cell between the arc-shaped limiting frames on both sides, and simultaneously rotating the threaded rod to drive the two connecting rods to move closer or further apart, it is convenient to limit battery cells of different sizes, facilitate accurate positioning of the battery cells, and make subsequent processing easier. This prevents the battery cell position from shifting, expands the scope of application, and effectively solves the problems in the background technology.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a battery cell limiting fixture includes a base, a driving groove is provided in the center of the base, and slots are provided on both sides of the base, with the two slots located on both sides of the driving groove; a common driving component is provided between the two driving grooves for limiting battery cells of different sizes; several limiting components are provided at both ends of the top of the base, each limiting component including a U-shaped frame, the U-shaped frame being located at one end of the top of the base, and fixed cylinders being fixed at both the front and rear ends of the U-shaped frame; two opposing arc-shaped limiting frames are provided between the two fixed cylinders, and protective pads are fixedly provided on the inner walls of the two arc-shaped limiting frames, with the two ends of the battery cell respectively clamped between the two arc-shaped limiting frames.

[0010] Preferably, a telescopic rod is fixedly provided between the fixed cylinder and the outer wall of the arc-shaped limiting frame, and a spring is sleeved on the telescopic rod. The two ends of the spring are fixedly connected to the fixed cylinder and the arc-shaped limiting frame respectively, so as to facilitate bending the arc-shaped limiting frame to squeeze the telescopic rod and the spring.

[0011] Preferably, the drive assembly includes a threaded rod, the two ends of which are connected to the two walls inside the slot via bearings, and a threaded block is threadedly connected to the threaded rod to facilitate the rotation of the threaded rod to drive the threaded block to move horizontally inside the slot.

[0012] Preferably, both sides of the base are provided with through grooves, and the through grooves are connected to the inside of the slots. An extension plate is fixedly provided on the top of the threaded block. The end of the extension plate away from the threaded block passes through the through groove and is provided with a lifting plate. The lifting plate is provided with threaded holes distributed vertically. The end of the extension plate away from the threaded block is connected by a bolt that passes through the threaded hole and is used to fix the lifting plate and the extension plate, so as to facilitate unscrewing the bolt and adjusting the position of the lifting plate on the extension plate.

[0013] Preferably, a fixing plate is fixedly provided at the top of the lifting plate, and a connecting rod is fixedly provided on the side of the fixing plate near the extension plate. The end of the connecting rod away from the fixing plate is fixedly connected to one side of the central U-shaped frame, so as to facilitate the movement of the connecting rod to drive the U-shaped frame to move.

[0014] Preferably, a dual-axis motor is fixedly installed inside the drive slot. The output shafts at both ends of the dual-axis motor pass through the two side walls of the drive slot and are fixedly connected to one end of the two threaded rods, so as to facilitate the dual-axis motor to drive the two threaded rods to rotate.

[0015] Preferably, the top of the base is fixedly provided with a control panel for controlling the operation of the dual-axis motors, which facilitates the operation of the dual-axis motors.

[0016] Compared with the prior art, this utility model provides a battery cell limiting fixture, which has the following beneficial effects:

[0017] This invention, by prying open two arc-shaped limiting frames, allows the two ends of the battery cell to pass through the space between the two arc-shaped limiting frames and the protective pad. The arc-shaped limiting frames and the protective pad are then reset under the elastic action of the telescopic rod and spring, causing the protective pad to contact and compress one end of the battery cell. Utilizing the elastic reset force of the spring, this invention can adapt to battery cells with different dimensional tolerances, eliminating the fit gap between the battery cell and the fixture, achieving "zero-gap" positioning. In conventional processes such as welding and assembly, this elastic pre-tightening state effectively suppresses battery cell wobbling caused by external micro-vibrations, avoiding the positioning inaccuracies caused by gaps in rigid fixtures, while protecting the battery cell surface from hard damage, significantly improving positioning accuracy and applicability.

[0018] This invention uses the rotation of a threaded rod to drive a threaded block to move horizontally along the threaded rod, while simultaneously driving an extension plate to extend along a through groove. This causes the lifting plate, fixing plate, and connecting rod to move relative to each other, facilitating the movement of the two connecting rods closer or further apart. This allows for the limitation of different sized battery cells, thus facilitating the clamping and limiting of battery cells of different lengths, improving the performance and making operation more convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a rear view of the overall structure of this utility model.

[0021] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the limiting component structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the drive component structure of this utility model.

[0024] In the diagram: 1. Base, 2. Drive assembly, 3. Limit assembly, 4. Control panel, 5. Slot, 6. Drive slot; 21. Extension plate, 22. Lifting plate, 23. Fixing plate, 24. Connecting rod, 25. Threaded rod, 26. Threaded block, 27. Positive and negative dual-axis motor, 31. U-shaped frame, 32. Fixing cylinder, 33. Arc-shaped limit frame, 34. Protective pad, 35. Telescopic rod, 36. Spring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5 As shown, this utility model provides a battery cell limiting fixture, including a base 1. The center of the base 1 is provided with a drive groove 6, and slots 5 are provided on both sides of the base 1. The two slots 5 are located on both sides of the drive groove 6.

[0027] like Figure 1-4 As shown, the base 1 has three limiting components 3 distributed front to back and fixed to each other at both ends of its top. Each limiting component 3 includes a U-shaped frame 31, which is located at one end of the top of the base 1. The U-shaped frame 31 has a fixed cylinder 32 fixed at both ends of its interior. Two opposing arc-shaped limiting frames 33 are provided between the two fixed cylinders 32. Protective pads 34 are fixed on the inner walls of the two arc-shaped limiting frames 33. The two ends of the battery cell are respectively clamped between the two arc-shaped limiting frames 33. A telescopic rod 35 is fixed between the fixed cylinder 32 and the outer wall of the arc-shaped limiting frame 33. A spring 36 is sleeved on the telescopic rod 35. The two ends of the spring 36 are fixedly connected to the fixed cylinder 32 and the arc-shaped limiting frame 33, respectively, so as to facilitate bending the arc-shaped limiting frame 33 to squeeze the telescopic rod 35 and the spring 36.

[0028] By setting the limiting component 3, when it is necessary to limit and fix battery cells of different sizes, the two arc-shaped limiting frames 33 are manually pried open, so that the arc-shaped limiting frames 33 compress the telescopic rods 35 and springs 36 on both sides, and the two ends of the battery cell are passed between the two arc-shaped limiting frames 33. After releasing, the arc-shaped limiting frames 33 and the protective pads 34 will return to their original positions under the elastic action of the telescopic rods 35 and springs 36, so that the protective pads 34 contact one end of the battery cell and compress it, thereby facilitating the clamping of battery cells of different sizes and expanding the range of applications.

[0029] like Figure 1-3As shown in Figure 5, a common driving component 2 is provided between the two driving slots 6 for limiting the position of battery cells of different sizes. The driving component 2 includes a threaded rod 25, the two ends of which are connected to the two walls inside the slot 5 through bearings. A threaded block 26 is threadedly connected to the threaded rod 25, which facilitates the rotation of the threaded rod 25 to drive the threaded block 26 to move horizontally inside the slot 5. Both sides of the base 1 are provided with through slots, and the through slots are connected to the inside of the slot 5.

[0030] An extension plate 21 is fixedly provided on the top of the threaded block 26. The end of the extension plate 21 away from the threaded block 26 passes through a through groove and is provided with a lifting plate 22. The lifting plate 22 has threaded holes distributed vertically. The end of the extension plate 21 away from the threaded block 26 is connected by a bolt that passes through the threaded hole and is used to fix the lifting plate 22 and the extension plate 21, so that the bolt can be loosened and the position of the lifting plate 22 on the extension plate 21 can be adjusted.

[0031] A fixing plate 23 is fixedly provided at the top of the lifting plate 22. A connecting rod 24 is fixedly provided on the side of the fixing plate 23 near the extension plate 21. The end of the connecting rod 24 away from the fixing plate 23 is fixedly connected to one side of the central U-shaped frame 31, so that the connecting rod 24 can move to drive the U-shaped frame 31 to move. A positive and negative dual-axis motor 27 is fixedly provided inside the drive groove 6. The output shafts at both ends of the positive and negative dual-axis motor 27 pass through the two side walls of the drive groove 6 and are fixedly connected to one end of two threaded rods 25, so that the positive and negative dual-axis motor 27 can work to drive the two threaded rods 25 to rotate. A control panel 4 for controlling the operation of the positive and negative dual-axis motor 27 is fixedly provided on the top of the base 1, so that the control panel 4 can be operated to control the operation of the positive and negative dual-axis motor 27.

[0032] By setting the drive assembly 2, when limiting the battery cells of different lengths, the control panel 4 controls the positive and negative dual-axis motor 27 inside the drive slot 6 to work. The positive and negative dual-axis motor 27 drives the threaded rods 25 at both ends to rotate. The rotation of the threaded rods 25 drives the threaded blocks 26 on them to move horizontally along the threaded rods 25 and inside the slot 5. At the same time, it drives the extension plate 21 to extend out along the through slot, and drives the lifting plate 22, the fixing plate 23 and the connecting rod 24 to move relative to each other, so as to drive the two connecting rods 24 to move closer or further apart. Finally, according to the size of the battery cell to be limited, the bolt between the lifting plate 22 and the extension plate 21 is loosened, and the fixing plate 23 is pulled out to drive the lifting plate 22 to move up and down at one end of the extension plate 21, so as to facilitate the limitation of battery cells of different sizes. Then the bolts on it are tightened, so as to facilitate the limitation and clamping of battery cells of different lengths, improve the use effect and facilitate operation.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A battery cell limiting fixture, comprising a base (1), characterized in that: The base (1) has a drive groove (6) in the center, and slots (5) are provided on both sides of the base (1), with the two slots (5) located on both sides of the drive groove (6). The same drive assembly (2) is provided between the two drive slots (6) for limiting the position of cells of different sizes; The base (1) has several limiting components (3) at both ends of the top. The limiting components (3) include a U-shaped frame (31). The U-shaped frame (31) is located at one end of the top of the base (1). The front and rear ends of the U-shaped frame (31) are fixedly provided with fixing cylinders (32). Two opposing arc-shaped limiting frames (33) are provided between the two fixing cylinders (32). The inner walls of the two arc-shaped limiting frames (33) are fixedly provided with protective pads (34), and the two ends of the battery cell are respectively clamped between the two arc-shaped limiting frames (33).

2. The cell limiting fixture according to claim 1, characterized in that: A telescopic rod (35) is fixed between the fixed cylinder (32) and the outer wall of the arc-shaped limiting frame (33). A spring (36) is sleeved on the telescopic rod (35). The two ends of the spring (36) are fixedly connected to the fixed cylinder (32) and the arc-shaped limiting frame (33) respectively.

3. The cell limiting fixture according to claim 2, characterized in that: The drive assembly (2) includes a threaded rod (25), the two ends of which are connected to the two walls inside the slot (5) by bearings, and a threaded block (26) is threadedly connected to the threaded rod (25).

4. The cell limiting fixture according to claim 3, characterized in that: Both sides of the base (1) are provided with through grooves, and the through grooves are connected to the inside of the slot (5). An extension plate (21) is fixedly provided on the top of the threaded block (26). The end of the extension plate (21) away from the threaded block (26) passes through the through groove and is provided with a lifting plate (22). The lifting plate (22) is provided with threaded holes distributed vertically. The end of the extension plate (21) away from the threaded block (26) is connected by a threaded bolt that passes through the threaded hole and is used to fix the lifting plate (22) and the extension plate (21).

5. A cell limiting fixture according to claim 4, characterized in that: The top of the lifting plate (22) is fixedly provided with a fixing plate (23), and a connecting rod (24) is fixedly provided on the side of the fixing plate (23) near the extension plate (21), and the end of the connecting rod (24) away from the fixing plate (23) is fixedly connected to the side of the central U-shaped frame (31).

6. A cell limiting fixture according to claim 5, characterized in that: The drive slot (6) is fixedly equipped with a dual-axis motor (27) with positive and negative axes. The output shafts of the dual-axis motor (27) at both ends pass through the two side walls of the drive slot (6) and are fixedly connected to one end of two threaded rods (25).

7. A cell limiting fixture according to claim 6, characterized in that: The base (1) is fixedly provided with a control panel (4) for controlling the operation of the positive and negative dual-axis motors (27).

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