Multifunctional use tool for complex sheet metal part of battery pack

Abstract

The utility model discloses a multifunctional use tool for complex sheet metal parts of a battery pack, and belongs to the technical field of manufacturing of sheet metal parts of battery packs. The battery mounting tool mainly comprises a tool body, a cavity is formed in the top face of the tool body, a plurality of transverse partition plates and longitudinal partition plates are integrally formed in the cavity, the cavity is divided into a plurality of mounting cavities for mounting batteries through the transverse partition plates and the longitudinal partition plates, and the rigidity is enhanced through a reinforcing rib structure of the tool body; according to the positioning device, the positioning holes are matched with the positioning pins for precise positioning, the problem of large resilience of the sheet metal part is effectively solved, meanwhile, real-time precision verification is achieved through matching of the calibration holes and the positioning pins, it is ensured that the multi-process machining standard is unified, precision loss caused by standard drifting is avoided, and the machining precision and quality stability of the battery pack sheet metal part are greatly improved.

Description

Technical Field

[0001] This application relates to the field of battery pack sheet metal parts manufacturing technology, specifically a multi-functional tooling for complex sheet metal parts of battery packs. Background Technology

[0002] With the rapid development of the global new energy vehicle industry, the demand for lightweight and high-strength sheet metal parts for battery packs, as core components, is increasing. Battery pack sheet metal parts generally have the following typical characteristics: thin sheet material, high springback coefficient (maximum 30mm), many holes requiring mold development, low supply volume, and short production cycle. Therefore, it is necessary to ensure precision while saving costs and ensuring timely completion.

[0003] However, on the one hand, due to the thinness and high springback of sheet metal materials, traditional leveling processes struggle to control flatness and hole accuracy; moreover, tooling for each processing step is developed independently, resulting in high costs and long cycles, making it difficult to meet the needs of small-batch production. On the other hand, traditional tooling lacks detailed design, and the accumulation of debris and thermal deformation affect processing accuracy, while the lack of unified benchmarks across multiple processes leads to severe accuracy loss. Utility Model Content

[0004] The purpose of this utility model is to provide a multifunctional tooling for complex sheet metal parts of battery packs, so as to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this application to solve its technical problem is:

[0006] A multi-functional tooling for complex sheet metal parts of a battery pack includes a tooling body. A cavity is formed on the top surface of the tooling body. Multiple transverse partitions and longitudinal partitions are integrally formed in the cavity. The cavity is divided into multiple mounting cavities for installing batteries by the multiple transverse partitions and longitudinal partitions.

[0007] The transverse and longitudinal partitions located in the center of the cavity are integrally formed with a first reinforcing rib at their staggered positions. The longitudinal partition near the edge is integrally formed with a third reinforcing rib on the side wall of the mounting cavity. The transverse partitions near both sides of the tooling body are integrally formed with a second reinforcing rib.

[0008] Preferably, mounting plates are integrally formed on both sides of the top edge of the tooling body, and the side wall of the mounting plate is provided with a first mounting hole.

[0009] Preferably, the tooling body has second mounting holes at equal intervals on a ring of top surface of the cavity, and the top surface of the mounting plate also has second mounting holes.

[0010] Preferably, the bottom surface of the longitudinal partition located at the center of the tooling body is provided with shaped positioning holes on both sides, and the bottom surface of the longitudinal partition located at the center of the tooling body is provided with calibration holes on both sides.

[0011] Preferably, a positioning pin is inserted into the positioning hole of the profile.

[0012] Preferably, the bottom surface of the tooling body is provided with equally spaced material leakage holes.

[0013] The beneficial effects of this application are:

[0014] 1. The rigidity is enhanced by the reinforcing rib structure of the tooling body. Combined with the precise positioning of the locating holes and locating pins, the problem of large springback of sheet metal parts is effectively overcome. At the same time, the cooperation between the calibration holes and locating pins enables real-time accuracy verification, ensuring the consistency of the processing benchmarks of multiple processes and avoiding accuracy loss caused by benchmark drift. This greatly improves the processing accuracy and quality stability of the battery pack sheet metal parts.

[0015] 2. This technical solution adopts a multi-functional integrated design. One set of tooling can realize multiple processes such as leveling, laser cutting, and three-coordinate inspection. The modular mounting hole design supports quick switching between tooling and external equipment. There is no need to debug molds separately for different processes, which significantly improves production efficiency and effectively meets the needs of cost control and emergency supply in small-batch, multi-batch production mode.

[0016] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is an overall schematic diagram of a multi-functional tooling for complex sheet metal parts of a battery pack according to the present invention.

[0019] Figure 2 This is a top-view cross-sectional structural diagram of the tooling body of this utility model.

[0020] Figure 3 This is a schematic diagram of the bottom structure of the tooling body of this utility model.

[0021] The following are the labeling elements in the figure:

[0022] 1. Tooling body; 2. Transverse partition; 3. Longitudinal partition; 4. First reinforcing rib; 5. Mounting plate; 51. First mounting hole; 6. Second reinforcing rib; 7. Second mounting hole; 8. Profile positioning hole; 9. Calibration hole; 10. Positioning pin; 11. Material leakage hole; 12. Mounting cavity; 13. Third reinforcing rib. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0025] Please see Figure 1-3 The embodiments provided by this utility model are as follows:

[0026] like Figure 1 As shown, a multi-functional tooling for complex sheet metal parts of a battery pack includes a tooling body 1. A cavity is formed on the top surface of the tooling body 1. Multiple transverse partitions 2 and longitudinal partitions 3 are integrally formed within the cavity. The cavity is divided into multiple mounting cavities 12 for battery installation by the transverse partitions 2 and longitudinal partitions 3. The cavity on the top surface of the tooling body 1 forms a grid-like support structure through the transverse partitions 2 and longitudinal partitions 3, further dividing the cavity into multiple independent battery mounting cavities 12. This structure utilizes the rigid constraints of the partitions to form a multi-dimensional support frame for the sheet metal part, limiting its deformation during processing due to the characteristics of thin sheet metal.

[0027] The transverse partition 2 and longitudinal partition 3 located in the center of the cavity are integrally formed with a first reinforcing rib 4 at their staggered positions. The longitudinal partition 3 near the edge is integrally formed with a third reinforcing rib 13 on the side wall of the mounting cavity 12. The transverse partition 2 near both sides of the tooling body 1 is integrally formed with a second reinforcing rib 6. Through the combined design of the partition and the reinforcing rib, a rigid support structure is constructed to solve the problem of easy deformation of thin plates. This provides a stable reference surface for subsequent leveling, cutting, and inspection processes. Furthermore, the precise division of the mounting cavity 12 provides a standardized positioning space for the battery pack sheet metal parts, ensuring the consistency of installation of multiple batches of parts in the tooling and reducing accuracy errors caused by positioning deviations.

[0028] The tooling body 1 has an integrally formed mounting plate 5 on both sides of the top edge. The side wall of the mounting plate 5 is provided with a first mounting hole 51. The tooling body 1 is provided with a second mounting hole 7 at equal intervals on a ring of top surface of the cavity. The top surface of the mounting plate 5 is also provided with a second mounting hole 7.

[0029] The mounting plate 5 on the top edge is rigidly connected to external equipment, such as a leveling fixture bracket or a laser cutting machine tool fixture, through the first mounting hole 51, forming a fixed support point for the fixture body 1, ensuring that the fixture does not shift during machining. The second mounting hole 7 can be used to detachably connect positioning pins 10, detection probes, and other functional components.

[0030] When the sheet metal part generates a 30mm springback stress during the leveling process, the mounting plate 5 transmits the reaction force to the external fixing device through the first mounting hole 51 to avoid stress concentration on the tooling body 1; the second mounting hole 7 allows the positioning pin 10 to be fixed by interference fit or bolt connection, forming a multi-point positioning constraint, forcing the sheet metal part surface to fit the tooling reference surface.

[0031] like Figure 2 As shown, the longitudinal partition 3 located at the center of the fixture body 1 has shaped positioning holes 8 on both sides of its bottom surface, and calibration holes 9 on both sides of its bottom surface. Positioning pins 10 are inserted into the shaped positioning holes 8. After insertion, the top of the positioning pin 10 protrudes from the bottom surface of the fixture, forming a positioning reference point. This point mates with the pre-set positioning holes on the sheet metal part, achieving three-dimensional positioning of the sheet metal part on the bottom surface of the fixture. The positioning pins 10 are designed as tapered or diamond-shaped pins to compensate for the shaped deviation of the sheet metal part caused by springback, forcing it to conform to the reference point on the bottom surface of the fixture.

[0032] The calibration hole 9 is used to insert a calibration rod or a test probe. After the sheet metal part is leveled, the relative position of the calibration hole 9 and the positioning pin 10 is detected by a coordinate measuring machine to calibrate the flatness of the tooling reference surface in real time and ensure the leveling accuracy. When the sheet metal part arches upward by 30mm due to springback, the positioning pin 10 applies downward pressure to the sheet metal part surface through the rigid support of the surface positioning hole 8. In conjunction with the mechanical pressure device of the leveling tooling, such as a cylinder, the sheet metal part is forcibly pressed against the bottom surface of the tooling. Through the combined action of the positioning pin 10 constraint and external force leveling, the flatness error is controlled within 0.1mm.

[0033] like Figure 3 As shown, the bottom surface of the fixture body 1 is provided with equally spaced discharge holes 11, which penetrate the thickness of the fixture body 1 to form a through channel. During the laser cutting process, the molten metal slag and chips generated during cutting fall into the discharge holes 11 by gravity and are discharged through a collection device below the fixture, such as a waste box, to prevent chips from accumulating between the bottom surface of the fixture and the sheet metal parts, thus preventing cutting accuracy deviations caused by foreign object interference. In conjunction with the negative pressure dust collection system of the laser cutting machine, the discharge holes 11 can form an airflow channel to accelerate chip discharge, while reducing the accumulation of cutting heat in the fixture body 1 and reducing the impact of thermal deformation on the dimensional accuracy of the sheet metal parts.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-functional tooling for complex sheet metal parts of a battery pack, characterized in that: The tooling body (1) is provided with a cavity on its top surface. Multiple transverse partitions (2) and longitudinal partitions (3) are integrally formed in the cavity. The cavity is divided into multiple mounting cavities (12) for installing batteries by the multiple transverse partitions (2) and longitudinal partitions (3). The transverse partition (2) and longitudinal partition (3) located in the center of the cavity are integrally formed with a first reinforcing rib (4), the longitudinal partition (3) near the edge is integrally formed with a third reinforcing rib (13) on the side wall of the mounting cavity (12), and the transverse partition (2) near both sides of the tooling body (1) is integrally formed with a second reinforcing rib (6).

2. The multi-functional tooling for complex sheet metal parts of a battery pack according to claim 1, characterized in that: The tooling body (1) has mounting plates (5) integrally formed on both sides of the top edge, and the mounting plate (5) has a first mounting hole (51) on its side wall.

3. The multi-functional tooling for complex sheet metal parts of a battery pack according to claim 2, characterized in that: The tooling body (1) has second mounting holes (7) at equal intervals on the top surface of the cavity, and the top surface of the mounting plate (5) also has second mounting holes (7).

4. The multi-functional tooling for complex sheet metal parts of a battery pack according to claim 1, characterized in that: A profile positioning hole (8) is provided on both sides of the bottom surface of the longitudinal partition (3) located at the center of the tooling body (1), and a calibration hole (9) is provided on both sides of the bottom surface of the longitudinal partition (3) located at the center of the tooling body (1).

5. The multi-functional tooling for complex sheet metal parts of a battery pack according to claim 4, characterized in that: A positioning pin (10) is inserted into the positioning hole (8) of the profile.

6. The multi-functional tooling for complex sheet metal parts of a battery pack according to claim 1, characterized in that: The tooling body (1) has material leakage holes (11) at equal intervals around its bottom surface.

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