Square aluminum shell battery cover plate positive post riveting process fixing tool

Abstract

The utility model relates to square aluminium shell battery cover plate fixed technology field, and disclose a kind of square aluminium shell battery cover plate pole riveting process fixed tool, including base, positioning piece, top cover piece and compression piece;The positioning piece is installed on base, the top cover piece is placed on positioning piece, the compression piece is flexibly pressed in the top of top cover piece, the limiting piece that the compression piece is limited is installed on base, to keep the pressure of compression piece to top cover piece.The utility model proposes a kind of square aluminium shell battery cover plate pole riveting process fixed tool, and top cover piece is positioned using locating plate and pin, replace traditional rigid fixture, avoid rigid injury, protect the integrity of top cover piece, simultaneously, using soft rubber pad flexible compression, prevent excessive extrusion or scratch, guarantee sealing, effectively improve the assembly quality and service life of top cover piece.

Description

Technical Field

[0001] This utility model relates to the field of fixing square aluminum battery cover plates, and in particular to a fixing fixture for the riveting process of the terminal posts of square aluminum battery cover plates. Background Technology

[0002] Square aluminum-cased batteries are a common type of battery packaging, widely used in electronic devices, new energy vehicles, and other fields. Their structure mainly includes the battery casing, cells, and cover plate. The cover plate is a crucial component of the square aluminum-cased battery, serving not only to seal the internal components but also to provide electrode leads and safety protection. In the assembly process of square aluminum-cased batteries, the top cover riveting process is one of the core steps. The effectiveness of the riveting process directly determines the battery's sealing performance, safety, and electrical performance. Traditional riveting methods include stamping riveting, press riveting, and hammer riveting. These methods primarily utilize unidirectional pressure or impact, instantly deforming the material. The deformation mechanism is mainly localized compression, which easily leads to stress concentration and may generate high temperatures under instantaneous high pressure. This can adversely affect the battery materials, reducing the battery's reliability and consistency.

[0003] In contrast, rotary riveting is a more advanced riveting method. It uses the combined action of rotation and axial pressure to induce gradual plastic deformation in the metal material, allowing the material to flow uniformly and generating less frictional heat.

[0004] However, in existing cover plate riveting technology, the cover plate usually needs to be fixed. Most existing fixing methods use clamps, which can easily cause hard damage to the cover plate, affecting its integrity and sealing. At the same time, when drilling holes in the cover plate, it is also easy to cause the cover plate to shift, further affecting the riveting accuracy, thus affecting the overall performance and reliability of the battery.

[0005] To address the aforementioned issues, this application proposes a fixture for fixing the terminal post of a square aluminum-cased battery cover through a riveting process. Utility Model Content

[0006] Based on the technical problems existing in the background art, this utility model proposes a fixing tool for the riveting process of the terminal post of a square aluminum battery cover.

[0007] This utility model proposes a fixing fixture for the riveting process of the terminal post of a square aluminum shell battery cover, including a base, a positioning component, a top cover plate, and a pressing component;

[0008] The positioning component is installed on the base, the top cover is placed on the positioning component, the pressing component flexibly presses against the top of the top cover, and the base is equipped with a limiting component to limit the pressing component, so as to maintain the pressure of the pressing component on the top cover.

[0009] Preferably, the positioning component includes a positioning plate mounted on the base. The center of the positioning plate is integrally formed into an arc-shaped concave shape. Positioning grooves are provided at both ends of the positioning plate. Vertically arranged pins are connected to the arc-shaped concave part of the positioning plate. Positioning holes adapted to the pins are provided on the top cover plate. The top cover plate is placed on the positioning plate, and both ends of the top cover plate are respectively placed in the two positioning grooves. The pins pass through the positioning holes. Two riveting shafts are symmetrically connected on the top cover plate.

[0010] Preferably, the pressing component includes an upper pressure plate and a soft rubber pad. The soft rubber pad is placed on the top cover plate, and two symmetrically arranged second openings are integrally formed on the soft rubber pad. Two riveting shafts on the top cover plate are respectively placed in the two second openings. The upper pressure plate is placed on the soft rubber pad, and two symmetrically arranged first openings are opened on the upper pressure plate, and the two first openings correspond to the two second openings respectively. The limiting component is used to press and limit the two ends of the upper pressure plate to maintain the flexible pressing of the soft rubber pad against the top cover plate.

[0011] Preferably, the limiting component includes pads, and two pads are symmetrically installed on the base. The two pads are located at both ends of the positioning plate, and elbow clamps are installed on both pads. The two elbow clamps are used to press and limit the two ends of the upper pressure plate.

[0012] Preferably, the base is provided with a support bracket at its bottom.

[0013] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0014] 1. This design uses a positioning plate and pins to position the top cover plate, changing the traditional clamping method. The two positioning slots of the positioning plate and the pin in the middle can accurately position the top cover plate, avoiding hard damage to the top cover plate caused by rigid clamps, thus effectively protecting the integrity of the top cover plate.

[0015] 2. This design uses a soft rubber pad to flexibly press the top cover sheet. The flexible pressing action of the soft rubber pad will not cause excessive pressure or scratches on the surface of the top cover sheet like a rigid clamp, thus further ensuring the sealing performance of the top cover sheet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a fixing fixture for the riveting process of the terminal post of a square aluminum battery cover proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the fixing structure of the top cover plate of this utility model;

[0018] Figure 3 This utility model Figure 2 Overall front view;

[0019] Figure 4 This is a schematic diagram of the mating structure of the positioning component, top cover, pressing component, and limiting component of this utility model;

[0020] Figure 5 This is a schematic diagram of the mating structure of the positioning plate and the top cover plate of this utility model.

[0021] Reference numerals: 1. Base; 101. Bracket; 2. Positioning component; 21. Positioning plate; 22. Positioning groove; 23. Pin; 3. Top cover plate; 31. Positioning hole; 32. Riveting shaft; 4. Pressing component; 41. Upper pressure plate; 411. First opening; 42. Soft rubber pad; 421. Second opening; 5. Limiting component; 51. Pad; 52. Elbow clamp. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] like Figure 1-5 As shown, the present invention proposes a fixing fixture for the riveting process of the terminal post of a square aluminum battery cover, which includes a base 1, a positioning part 2, a top cover 3 and a pressing part 4.

[0024] Positioning component 2 is installed on base 1, top cover plate 3 is placed on positioning component 2, pressing component 4 is flexibly pressed against the top of top cover plate 3, and limiting component 5 is installed on base 1 to limit the pressing component 4 to maintain the pressure of pressing component 4 on top cover plate 3.

[0025] The positioning component 2 initially limits the position of the top cover plate 3, ensuring that it is accurately placed in the preset position and preventing positional deviations during subsequent processing. After the top cover plate 3 is placed on the positioning component 2, the pressing component 4 applies flexible pressure from the top of the top cover plate 3. This flexible pressure method differs from traditional rigid clamps and can effectively prevent hard damage to the top cover plate 3. At the same time, the limiting component 5 on the base 1 limits the pressing component 4, ensuring that the pressing component 4 always maintains appropriate pressure on the top cover plate 3, ensuring that the top cover plate 3 will not shift during riveting, guaranteeing riveting accuracy, and thus improving the battery's sealing, safety, and electrical performance.

[0026] In a specific embodiment, the positioning component 2 includes a positioning plate 21 mounted on the base 1. The center of the positioning plate 21 is integrally formed into an arc-shaped concave shape. Positioning grooves 22 are provided at both ends of the positioning plate 21. Vertically arranged pins 23 are connected to the arc-shaped concave part of the positioning plate 21. Positioning holes 31 adapted to the pins 23 are provided on the top cover plate 3. The top cover plate 3 is placed on the positioning plate 21, and the two ends of the top cover plate 3 are respectively placed in the two positioning grooves 22. The pins 23 pass through the positioning holes 31. Two rivet shafts 32 are symmetrically connected on the top cover plate 3.

[0027] The positioning grooves 22 at both ends of the positioning plate 21 are used to position the two ends of the top cover plate 3 and restrict the movement of the top cover plate 3 in the horizontal direction. The pin 23 at the arc-shaped concave part cooperates with the positioning hole 31 on the top cover plate 3. When the top cover plate 3 is placed on the positioning plate 21, the pin 23 passes through the positioning hole 31, which can further fix the position of the top cover plate 3 and prevent the top cover plate 3 from rotating or shifting during the riveting process. The two riveting shafts 32 on the top cover plate 3 are the key parts of the riveting process. Through the above positioning structure, it can be ensured that the riveting tool accurately acts on the riveting shaft 32, improve the accuracy and consistency of riveting, reduce riveting defects caused by inaccurate positioning, and ensure the quality of the battery cover plate.

[0028] In a specific embodiment, the pressing component 4 includes an upper pressure plate 41 and a soft rubber pad 42. The soft rubber pad 42 is placed on the top cover plate 3. Two symmetrically arranged second openings 421 are integrally formed on the soft rubber pad 42. Two riveting shafts 32 on the top cover plate 3 are respectively placed in the two second openings 421. The upper pressure plate 41 is placed on the soft rubber pad 42. Two symmetrically arranged first openings 411 are opened on the upper pressure plate 41, and the two first openings 411 correspond to the two second openings 421 respectively. The limiting component 5 is used to press and limit the two ends of the upper pressure plate 41 to maintain the soft rubber pad 42's flexible pressing against the top cover plate 3.

[0029] The soft rubber pad 42 in the pressing component 4 is in direct contact with the top cover plate 3. Its flexible material can provide pressure while avoiding scratches or excessive compression on the surface of the top cover plate 3, protecting the integrity of the top cover plate 3 and thus ensuring the battery's sealing. The second opening 421 on the soft rubber pad 42 is used to avoid the riveting shaft 32 on the top cover plate 3, preventing the soft rubber pad 42 from blocking the riveting shaft 32 and affecting the riveting process. The upper pressure plate 41 is placed on the soft rubber pad 42, which plays the role of transmitting pressure and enhancing the pressing stability. The first opening 411 on the upper pressure plate 41 corresponds to the second opening 421 on the soft rubber pad 42, ensuring that the riveting tool can smoothly pass through the opening and act on the riveting shaft 32. The limiting component 5 presses and limits the two ends of the upper pressure plate 41, so that the upper pressure plate 41 maintains a stable pressure on the soft rubber pad 42, thereby allowing the soft rubber pad 42 to continuously and flexibly press the top cover plate 3, preventing the top cover plate 3 from shifting due to pressure changes during the riveting process, and ensuring the stability and quality of the riveting process.

[0030] In a specific embodiment, the limiting component 5 includes pads 51. Two pads 51 are symmetrically installed on the base 1. The two pads 51 are located at both ends of the positioning plate 21. An elbow clamp 52 is installed on each of the two pads 51. The two elbow clamps 52 are used to press and limit the two ends of the upper pressure plate 41. In use, the elbow clamps 52 are pressed so that their ends are raised. After the upper pressure plate 41 is placed, the force applied to the elbow clamps 52 is released, so that the pressure heads of the two elbow clamps 52 press against the two ends of the upper pressure plate 41, thereby fixing the upper pressure plate 41 in a preset position and maintaining the pressure of the upper pressure plate 41 on the soft rubber pad 42. This is the prior art and will not be elaborated on. In this way, the soft rubber pad 42 continuously and flexibly presses against the top cover plate 3. This limiting method can not only quickly realize the clamping and loosening operation and improve work efficiency, but also the clamping force is stable and reliable. It can effectively prevent the upper pressure plate 41 from loosening during the riveting process, causing the top cover plate 3 to shift, and ensuring the smooth progress of the riveting process and the quality of riveting.

[0031] In a specific embodiment, a support bracket 101 is installed at the bottom of the base 1 to support it.

[0032] The specific working principle of this utility model is as follows:

[0033] Place the top cover plate 3 on the positioning plate 21 of the positioning component 2, so that the two ends of the top cover plate 3 are respectively embedded in the positioning grooves 22 at both ends of the positioning plate 21. The positioning grooves 22 restrict the left and right movement of the top cover plate 3 in the horizontal direction. At the same time, ensure that the pin 23 at the arc-shaped concave part in the middle of the positioning plate 21 accurately passes through the positioning hole 31 on the top cover plate 3. Through the cooperation of the pin 23 and the positioning hole 31, the rotation and forward and backward movement of the top cover plate 3 are further restricted, thereby achieving the positioning of the top cover plate 3. At this time, the two riveting shafts 32 on the top cover plate 3 are in the preset processing position.

[0034] Place the soft rubber pad 42 in the pressing part 4 on the top cover plate 3, so that the two riveting shafts 32 on the top cover plate 3 are respectively embedded into the two second openings 421 on the soft rubber pad 42. The second openings 421 prevent the soft rubber pad 42 from blocking the riveting shafts 32. Then place the upper pressure plate 41 on the soft rubber pad 42, ensuring that the two first openings 411 on the upper pressure plate 41 are aligned with the two second openings 421 on the soft rubber pad 42, so that the subsequent riveting tool can smoothly pass through the openings and act on the riveting shafts 32.

[0035] The operating limit piece 5 is fixed, and the elbow clamps 52 on the two pads 51 are moved respectively, so that the pressure head of the elbow clamp 52 presses against both ends of the upper pressure plate 41, pressing and limiting the upper pressure plate 41. The upper pressure plate 41 remains stable under the action of the elbow clamp 52, and then the pressure is transmitted to the soft rubber pad 42, so that the soft rubber pad 42 continuously exerts flexible pressure on the top cover plate 3, which not only ensures that the top cover plate 3 will not shift during the riveting process, but also avoids damage to the top cover plate 3 by hard pressure.

[0036] After completing the above fixing steps, the riveting equipment can be started. The riveting tool performs the riveting process on the two riveting shafts 32 on the top cover plate 3 through the first opening 411 of the upper pressure plate 41 and the second opening 421 of the soft rubber pad 42. During the riveting process, since the top cover plate 3 is positioned and stably fixed, the riveting tool can accurately act on the riveting shafts 32. Through the combined action of rotation and axial pressure, the metal material at the riveting shafts 32 undergoes progressive plastic deformation, thus realizing the riveting operation.

[0037] After the riveting process is completed, reverse the elbow clamp 52 to release the pressing limit on the upper pressure plate 41, remove the upper pressure plate 41 and soft rubber pad 42 in sequence, then remove the riveted top cover 3 from the positioning plate 21, and finally reset all parts of the tooling to prepare for the next riveting process.

[0038] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model, and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixture for fixing the terminal posts of a square aluminum battery cover in a riveting process, characterized in that, Includes a base (1), a positioning component (2), a top cover (3), and a pressing component (4); The positioning element (2) is installed on the base (1), the top cover (3) is placed on the positioning element (2), the pressing element (4) is flexibly pressed against the top of the top cover (3), and the base (1) is equipped with a limiting element (5) to limit the pressing element (4) so ​​as to maintain the pressure of the pressing element (4) on the top cover (3).

2. The fixing fixture for the riveting process of the terminal posts of a square aluminum battery cover plate according to claim 1, characterized in that, The positioning component (2) includes a positioning plate (21) mounted on the base (1). The center of the positioning plate (21) is integrally formed into an arc-shaped concave shape. Positioning grooves (22) are provided at both ends of the positioning plate (21). Vertically arranged pins (23) are connected to the arc-shaped concave part of the positioning plate (21). Positioning holes (31) adapted to the pins (23) are provided on the top cover plate (3). The top cover plate (3) is placed on the positioning plate (21), and the two ends of the top cover plate (3) are respectively placed in the two positioning grooves (22). The pins (23) pass through the positioning holes (31). Two rivet shafts (32) are symmetrically connected on the top cover plate (3).

3. The fixing fixture for the riveting process of the terminal posts of a square aluminum battery cover plate according to claim 2, characterized in that, The pressing component (4) includes an upper pressure plate (41) and a soft rubber pad (42). The soft rubber pad (42) is placed on the top cover plate (3). Two symmetrically arranged second openings (421) are integrally formed on the soft rubber pad (42). Two riveting shafts (32) on the top cover plate (3) are respectively placed in the two second openings (421). The upper pressure plate (41) is placed on the soft rubber pad (42). Two symmetrically arranged first openings (411) are opened on the upper pressure plate (41), and the two first openings (411) correspond to the two second openings (421) respectively. The limiting component (5) is used to press and limit the two ends of the upper pressure plate (41) to maintain the soft rubber pad (42) to flexibly press against the top cover plate (3).

4. The fixing fixture for the riveting process of the terminal posts of a square aluminum battery cover plate according to claim 3, characterized in that, The limiting component (5) includes a pad (51). Two pads (51) are symmetrically installed on the base (1). The two pads (51) are located at both ends of the positioning plate (21). An elbow clamp (52) is installed on each of the two pads (51). The two elbow clamps (52) are used to press and limit the two ends of the upper pressure plate (41).

5. The fixing fixture for the riveting process of the terminal posts of a square aluminum battery cover plate according to claim 1, characterized in that, The base (1) is fitted with a support bracket (101) at its bottom.

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