Power battery module end plate machining clamp

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a power battery module end plate machine machining clamp which comprises a turnover mechanism, an installation base, a supporting block, an initial positioning air cylinder, an upper pressing air cylinder, a lower pressing air cylinder and a centering air cylinder. The supporting blocks are symmetrically fixed to the mounting base and used for bearing a to-be-machined workpiece, piston rods of the initial positioning air cylinders are arranged opposite to the supporting blocks and used for limiting the position of the to-be-machined workpiece, and the upper pressing air cylinders and the lower pressing air cylinders are arranged on the two sides of the mounting base and used for pressing the to-be-machined workpiece. And the centering cylinder is arranged in the middle of the mounting base. According to the power battery module end plate machining clamp, the turnover mechanism and the centering air cylinder are adopted for positioning and clamping, the centering requirement needed by products is greatly improved, and the reject ratio during follow-up module group assembling is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a machining fixture for an end plate of a power battery module. Background Art

[0002] With the rapid development of the new energy vehicle industry, battery technology and its integrated management technology are constantly innovating, including new material technology, new process technology, new integration technology and new management technology. Among these new technologies, CTP technology is particularly prominent. It simplifies the design of the battery pack through large-module or non-module methods, reduces the number of parts, and thus improves energy density and reduces costs. In large-module technology, the end plate, as one of the key components, plays an important role in fixing and supporting the battery cells when they are grouped. In order to ensure that a relatively rigid body can be formed between the battery cells and meet the thermal management and assembly requirements in the battery pack, the end plate needs to have high flatness and good centering. Therefore, it is particularly important to develop a machining fixture that can effectively improve the centering and processing accuracy of the end plate.

[0003] Existing power battery module end plate machining fixtures usually use limit blocks and bolt clamping to fix the workpiece to be processed. This method cannot automatically compensate for the dimensional tolerance of the workpiece to be processed, making it impossible to eliminate the impact of the size difference of the incoming material during the processing process, which in turn leads to poor concentricity of the processed product, affecting the assembly quality and performance of the subsequent battery module assembly. Utility Model Content

[0004] The purpose of the utility model is to provide a power battery module end plate machining fixture to solve the problem raised in the above background technology that the current power battery module end plate machining fixture is usually fixed by clamping with limit blocks and bolts, and this fixing method cannot compensate for the dimensional tolerance of the workpiece to be processed, resulting in poor concentricity of the processed product.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a power battery module end plate machining fixture, comprising a flipping mechanism, a mounting base, a support block, an initial positioning cylinder, upper and lower clamping cylinders, and a centering cylinder. The flipping mechanism is arranged on one side of the mounting base, and is used to adjust the front and back sides of the workpiece to be processed. The mounting base is provided with connecting holes for fixing each cylinder and the support block. The support block is symmetrically fixed on the mounting base, and is used to carry the workpiece to be processed. The piston rod of the initial positioning cylinder is arranged opposite to the support block, and is used to limit the position of the workpiece to be processed. The upper and lower clamping cylinders are arranged on both sides of the mounting base, and are used to clamp the workpiece to be processed. The centering cylinder is arranged in the middle of the mounting base, and is located on both sides of the workpiece to be processed, and is used to center and clamp the workpiece to be processed.

[0006] Preferably, a rotation connection device is provided between the flipping mechanism and the mounting base, and the flipping mechanism can rotate 180° around the rotation connection device.

[0007] Preferably, a limiting head for contacting the workpiece to be processed is provided at the end of the piston rod of the initial positioning cylinder.

[0008] Preferably, an upper pressing block is provided at the end of the piston rod of the upper and lower pressing cylinders, and the upper pressing block at the end of the piston rod of the upper and lower pressing cylinders is in contact with the workpiece to be processed.

[0009] Preferably, a lower clamping block is provided at the end of the piston rod of the centering cylinder, and the lower clamping block at the end of the piston rod of the centering cylinder is also in contact with the workpiece to be processed.

[0010] Preferably, the support block is provided with a groove matching the shape of the workpiece to be processed.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the power battery module end plate machining fixture adopts a flipping mechanism and a centering cylinder for positioning and clamping, which greatly improves the centering requirements required by the product and reduces the defective rate during subsequent module assembly. The power battery module end plate machine improves the original limit block and bolt clamping fixation, adopts a flipping mechanism, reduces the steps of manual secondary clamping, reduces the processing error, and uses a centering cylinder to automatically compensate for the length error of the workpiece to be processed, achieving the consistency of the center surface of the workpiece to be processed, and significantly improving the centering of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a power battery module end plate machining fixture structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the rear structure of a power battery module end plate machining fixture of the utility model;

[0014] Figure 3 It is a side structural schematic diagram of a flipping mechanism of a power battery module end plate machining fixture of the utility model.

[0015] In the figure: 1. Flipping mechanism; 2. Mounting base; 3. Support block; 4. Initial positioning cylinder; 5. Clamping cylinder; 6. Centering cylinder. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3The utility model provides a technical solution: a power battery module end plate machining fixture, including a flip mechanism 1, a mounting base 2, a support block 3, an initial positioning cylinder 4, an upper and lower pressing cylinder 5, and a centering cylinder 6. The flip mechanism 1 is arranged on one side of the mounting base 2, and is used to adjust the front and back sides of the workpiece to be processed. The mounting base 2 is provided with connecting holes for fixing each cylinder and the support block 3. The support block 3 is symmetrically fixed on the mounting base 2 to carry the workpiece to be processed. The piston rod of the initial positioning cylinder 4 is arranged opposite to the support block 3 to limit the position of the workpiece to be processed. The upper and lower pressing cylinders 5 are arranged on both sides of the mounting base 2 to press the workpiece to be processed. The centering cylinder 6 is arranged in the middle of the mounting base 2 and is located on both sides of the workpiece to be processed. It is used to center and press the workpiece to be processed. When the workpiece to be processed is placed on the support block 3, the piston rod of the initial positioning cylinder 4 extends out to limit the position of the workpiece to be processed, ensuring the accuracy of its initial position, and the centering cylinder 6 centers and presses the workpiece to be processed from both sides, using the consistency of the stroke on both sides to ensure that the center plane of the workpiece to be processed remains unchanged, and the upper and lower pressing cylinders 5 further press the workpiece to be processed to ensure its stability during the processing. Finally, the turning mechanism 1 turns the workpiece to be processed 180° after completing the processing of one side to process the other side. The effective coordination of this series of actions not only reduces the steps of manual secondary clamping and reduces processing errors, but also uses the centering cylinder 6 to automatically compensate for the length of the workpiece to be processed. The degree error is achieved, the consistency of the center surface of the workpiece to be processed is achieved, the centering of the product is significantly improved, and the defective rate during the subsequent module assembly is reduced. A rotating connection device is provided between the flip mechanism 1 and the mounting base 2. The flip mechanism 1 can rotate 180° around the rotating connection device. In this structure, after the workpiece to be processed is processed on one side, it can be automatically flipped to the other side for processing through the flip mechanism 1, and the same positioning and clamping steps are performed again to complete the processing of the other side. No manual intervention and re-clamping are required, which reduces the time and potential errors of manual operation, thereby not only improving the processing efficiency, but also ensuring the processing accuracy. The end of the piston rod of the initial positioning cylinder 4 is provided with a limit head in contact with the workpiece to be processed. The initial positioning cylinder 4 of this structure is working When the upper and lower clamping cylinders 5 are in operation, their piston rods extend out and accurately limit the position of the workpiece to be processed through the limit head, ensuring that the workpiece to be processed is accurately placed at the predetermined position on the support block 3, ensuring its stability during the processing. An upper clamping block is provided at the end of the piston rod of the upper and lower clamping cylinders 5, and the upper clamping block at the end of the piston rod of the upper and lower clamping cylinders 5 is in contact with the workpiece to be processed. When the upper and lower clamping cylinders 5 of this structure are working, their piston rods extend out and firmly clamp the workpiece to be processed through the upper clamping block, ensuring that the workpiece to be processed remains stable during the entire processing process, further ensuring the stability during the processing. A lower clamping block is provided at the end of the piston rod of the centering cylinder 6, and the lower clamping block at the end of the piston rod of the centering cylinder 6 is also in contact with the workpiece to be processed. When the centering cylinder 6 of this structure is working,The piston rod extends and presses the workpiece to be processed from both sides through the lower clamping block to ensure that the center plane of the workpiece to be processed remains unchanged, which can also ensure the processing accuracy, especially improve the centering of the product, thereby reducing the defective rate during subsequent module assembly. The support block 3 is provided with a groove that matches the shape of the workpiece to be processed. This structure can place the workpiece to be processed in the groove of the support block 3 during the processing process, so that the workpiece to be processed can be stably positioned in the correct position.

[0018] Working principle: When using the power battery module end plate machining fixture, first place the workpiece to be processed in the groove on the support block 3, the piston rod of the initial positioning cylinder 4 is extended and the position of the workpiece to be processed is limited by the limit head to ensure the accuracy of its initial position, then the piston rod of the centering cylinder 6 is extended to make the lower clamping block contact with the workpiece to be processed, and the workpiece to be processed is clamped from both sides to ensure that the center plane of the workpiece to be processed remains consistent, then the piston rods of the upper and lower clamping cylinders 5 are extended to drive the upper clamping block to contact with the workpiece to be processed, further clamp the workpiece to be processed to ensure its stability during the processing, after completing the front processing, the flipping mechanism 1 rotates 180° around the rotating connection device, flips the workpiece to be processed to the other side for processing, and performs the same positioning and clamping steps again to complete the processing of the other side, thereby completing a series of work.

[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power battery module end plate machining fixture, comprising a turning mechanism (1), a mounting base (2), a support block (3), an initial positioning cylinder (4), upper and lower pressing cylinders (5), and a centering cylinder (6), characterized in that: The flip mechanism (1) is arranged on one side of the mounting base (2) and is used to adjust the front and back sides of the workpiece to be processed. The mounting base (2) is provided with connection holes for fixing each cylinder and a support block (3). The support block (3) is symmetrically fixed on the mounting base (2) and is used to carry the workpiece to be processed. The piston rod of the initial positioning cylinder (4) is arranged relative to the support block (3) and is used to limit the position of the workpiece to be processed. The upper and lower pressing cylinders (5) are arranged on both sides of the mounting base (2) and are used to press the workpiece to be processed. The centering cylinder (6) is arranged in the middle of the mounting base (2) and is located on both sides of the workpiece to be processed and is used to center and press the workpiece to be processed.

2. A power battery module end plate machining fixture according to claim 1, characterized in that: A rotation connection device is provided between the flipping mechanism (1) and the mounting base (2), and the flipping mechanism (1) can rotate 180° around the rotation connection device.

3. The power battery module end plate machining fixture according to claim 1, characterized in that: The end of the piston rod of the initial positioning cylinder (4) is provided with a limiting head which contacts the workpiece to be processed.

4. The power battery module end plate machining fixture according to claim 1, characterized in that: An upper pressing block is provided at the end of the piston rod of the upper and lower pressing cylinders (5), and the upper pressing block at the end of the piston rod of the upper and lower pressing cylinders (5) is in contact with the workpiece to be processed.

5. A power battery module end plate machining fixture according to claim 4, characterized in that: A lower clamping block is provided at the end of the piston rod of the centering cylinder (6), and the lower clamping block at the end of the piston rod of the centering cylinder (6) is also in contact with the workpiece to be processed.

6. The power battery module end plate machining fixture according to claim 1, characterized in that: The support block (3) is provided with a groove matching the shape of the workpiece to be processed.

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