Battery shaping device

Abstract

The utility model belongs to the technical field of batteries, and mainly relates to a battery reshaping device which comprises a clamp for reshaping a battery, the clamp comprises a base for placing the battery and a clamping plate for reshaping the battery, the battery comprises a packaging shell and a battery cell arranged in the packaging shell, the battery cell is fixedly connected with a tab, and the tab is arranged in the packaging shell. The packaging shell is provided with a top sealing part covering part of the tabs; the clamping plate comprises an upper clamping plate and a lower clamping plate, the upper clamping plate is provided with a first pit, and the lower clamping plate is provided with a first chamfer; the first pit and the first chamfer shape the top sealing part by clamping the top sealing part; therefore, the top sealing part of the battery packaging shell shaped by the battery shaping device is stable in structure, so that the bending resistance of the whole battery and the packaging shell in the width direction is improved, the battery can be conveniently grabbed by a mechanical claw of automatic equipment, the reject ratio is reduced, and meanwhile, the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery shaping technology, specifically relating to a battery shaping device. Background Technology

[0002] With the widespread application of portable electronic devices, power batteries, and energy storage systems, lithium-ion pouch batteries are widely used due to their slim profile, high energy density, and flexible design. In the manufacturing process of pouch batteries, secondary sealing is typically required to ensure the battery's sealing, mechanical stability, and long-term performance of the battery cells.

[0003] The secondary sealing of the battery strengthens the connection between the cell and the soft-pack casing, while reducing cell displacement during subsequent handling and formation processes. Because the sealing provides a relatively flat battery structure, it facilitates mechanical gripping and conveying by subsequent automated equipment (such as automatic formation feeders). However, in existing technologies, the secondary sealing of soft-pack batteries typically uses a hot-pressing mold for flat sealing. Specifically, upper and lower pressure plates clamp and heat the top sealing area to fuse the aluminum-plastic film for sealing. Since the upper and lower pressure plates of existing fixtures are usually planar, the top sealing area undergoes some plastic deformation after pressing. Due to uneven cell thickness and structural differences between the air bag and the cell body, the stress at the sealing area is uneven, causing the air bag and cell body to bend and tilt at the secondary sealing point. This tilted battery structure may become loose or its airtightness may be compromised, making it difficult for the mechanical grippers of automated equipment to accurately grasp the battery, thus affecting the feeding efficiency of the formation process.

[0004] Therefore, it is urgent to improve the existing battery shaping fixtures to solve the above-mentioned technical defects. Utility Model Content

[0005] The purpose of this utility model is to provide a battery shaping device that can solve the problem of bending and skewing that occurs during the secondary sealing of batteries, in order to address the shortcomings of the existing technology.

[0006] To achieve the above technical objectives, this application implements the following technical solution:

[0007] A battery shaping device includes a clamp for shaping a battery. The clamp includes a base for placing the battery and a clamping plate for shaping the battery. The battery includes a packaging shell and a battery cell disposed inside the packaging shell. The battery cell is fixedly connected with tabs. The packaging shell has a top seal that covers part of the tabs.

[0008] The clamping plate includes an upper clamping plate and a lower clamping plate. The upper clamping plate is provided with a first recess, and the lower clamping plate is provided with a first chamfer. The first recess and the first chamfer shape the top sealing part by clamping it.

[0009] The above technical solution achieves the following technical effects:

[0010] To address the aforementioned problems in the prior art, this application proposes a battery shaping device. This device uses a clamp to shape the top seal of the battery into a structure with a certain curvature. This shaped structure resembles a normal reinforcing rib, providing good load-bearing capacity and supporting the connection between the air bag and the battery cell, preventing the top seal from bending under gravity. Simultaneously, the first recess on the upper clamping plate and the first chamfer on the lower clamping plate work together to achieve the shaping of the top seal. The shaped top seal of the battery packaging shell maintains structural stability, facilitating gripping by the mechanical claws of automated equipment, reducing the defect rate while improving production efficiency and product quality.

[0011] As a further improvement to the battery shaping device of this utility model, a cylinder is fixedly connected to the upper clamping plate, and the cylinder is used to drive the upper clamping plate to move along the height direction of the base.

[0012] As a further improvement to the battery shaping device of this utility model, the clamp also includes a positioning member, which is used to fix the lower clamping plate to one side of the base in the thickness direction.

[0013] As a further improvement to the battery shaping device of this utility model, the lower clamping plate is provided with a countersunk hole, and the base is provided with a first through hole. The positioning component fixes the lower clamping plate to one side of the base in the thickness direction through the first through hole and the countersunk hole.

[0014] As a further improvement to the battery shaping device of this utility model, the clamp also includes at least one pad, and the pad is provided with a second through hole;

[0015] The positioning component fixes the lower clamping plate to one side of the base in the thickness direction through the first through hole, the second through hole of at least one layer of pad, and the countersunk hole.

[0016] As a further improvement to the battery shaping device of this utility model, the electrode tab is provided with an extension extending out of the top seal.

[0017] The upper clamping plate is provided with a second chamfer, and the lower clamping plate is provided with a second recess;

[0018] The second chamfer and the second recess shape the extension by clamping the extension.

[0019] As a further improvement to the battery shaping device of this utility model, both the second chamfer and the second recess are arc-shaped.

[0020] As a further improvement to the battery shaping device of this utility model, the arc center angle between the second chamfer and the second recess is in the range of 60°-90°.

[0021] As a further improvement to the battery shaping device of this utility model, both the first recess and the first chamfer are arc-shaped.

[0022] As a further improvement to the battery shaping device of this utility model, the arc center angle between the first recess and the first chamfer is in the range of 60°-90°. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the battery shaping fixture structure in embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the battery shaping fixture holding the battery in Embodiment 1 of this utility model;

[0026] Figure 3 In this utility model Figure 2 A magnified view of the battery at point A;

[0027] Figure 4 This is a schematic diagram of the battery shaping fixture in Embodiment 2 of this utility model;

[0028] in:

[0029] 1- Fixture;

[0030] 11-Base;

[0031] 111 - First through hole;

[0032] 12-Plywood;

[0033] 121 - Upper clamping plate;

[0034] 1211 - First pit;

[0035] 1212 - Second chamfer;

[0036] 122-Lower clamping plate;

[0037] 1221 - First chamfer;

[0038] 1222 - Second pit;

[0039] 1223 - Countersunk hole;

[0040] 13-Positioning component;

[0041] 14-Plate;

[0042] 141 – Second through hole;

[0043] 2-Battery;

[0044] 21-cell;

[0045] 22 - Packaging shell;

[0046] 221 - Top Sealing Section;

[0047] 23-Ear;

[0048] 231-Extension;

[0049] 3-Cylinder. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0051] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] Although this application discloses preferred embodiments as described above, it is not intended to limit the claims. Any person skilled in the art can make several possible changes and modifications without departing from the concept of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

[0053] The present invention will be further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0054] Implementation Method 1

[0055] like Figure 1-3As shown, this application takes into account that the existing battery 2 structure has relatively weak bending resistance due to the packaging shell 22 (the battery 2 packaging shell 22 generally adopts an aluminum-plastic film structure), so the packaging shell 22 is prone to bending after the battery 2 is sealed twice. Based on this, this application provides a battery 2 shaping structure, which improves the bending resistance of the packaging shell 22 by bending the top sealing part 221 of the packaging shell 22 into a structure similar to a legally mandated reinforcing rib.

[0056] Specifically, the battery 2 shaping device of this application includes a clamp 1 for shaping the battery 2. The clamp 1 includes a base 11 for placing the battery 2 and a clamping plate 12 for shaping the battery 2. The battery 2 includes a packaging shell 22 and a battery cell 21 disposed in the packaging shell 22. The battery cell 21 is fixedly connected to a tab 23. The packaging shell 22 is provided with a top sealing part 221 covering part of the tab 23. The clamping plate 12 includes an upper clamping plate 121 and a lower clamping plate 122. The upper clamping plate 121 is provided with a first recess 1211, and the lower clamping plate 122 is provided with a first chamfer 1221. The first recess 1211 and the first chamfer 1221 shape the top sealing part 221 by clamping it.

[0057] Specifically, the principle of shaping the battery 2 using the aforementioned battery 2 shaping device is as follows: During the shaping process, the first recess 1211 of the upper clamping plate 121 cooperates with the first chamfer 1221 of the lower clamping plate 122 to clamp and shape the top sealing portion 221 of the battery 2 packaging shell 22. This shaped battery 2 ensures that the top sealing portion 221 can maintain its shape when subjected to external pressure, thereby avoiding bending and deformation. In addition, by adjusting the relative positions of the upper and lower clamping plates 122, adaptive shaping of batteries 2 of different sizes and shapes can be performed, ensuring the versatility and flexibility of the device. In practical applications, this battery 2 shaping device can significantly improve the structural stability of the battery 2 packaging shell 22, reduce the failure rate on automated production lines, and thus improve overall production efficiency and the quality of the battery 2 products.

[0058] Furthermore, both the first recess 1211 and the first chamfer 1221 are arc-shaped, with an arc center angle ranging from 60° to 90°. The arc center angle can preferably be any one of 60°, 65°, 70°, 75°, 80°, 85°, or 90°. In specific implementation, the most preferred arc center angle is 90°, which ensures that the top seal 221 is uniformly shaped under pressure, avoiding material damage caused by stress concentration. In addition, the arc-shaped recess and chamfer design prevents sharp stress concentration points from forming at the edges of the top seal 221 during the shaping process, thereby improving the mechanical strength and safety of the battery 2.

[0059] Implementation Method 2

[0060] like Figure 1-4 As shown, unlike Embodiment 1, to further improve the stability of battery 2 shaping by the battery 2 shaping device of this application, a cylinder 3 is fixedly connected to the upper clamping plate 121. The cylinder 3 is used to drive the upper clamping plate 121 to move along the height direction of the base 11. The use of the cylinder 3 allows control over the moving distance and force of the upper clamping plate 121, thereby achieving precise shaping of the top sealing portion 221 of the battery 2. In specific implementations, the cylinder 3 can be driven electrically or pneumatically, depending on the actual application requirements and cost considerations. Under the action of the cylinder 3, the upper clamping plate 121 can quickly move to the designated position and maintain stable pressure after reaching the position, ensuring the shaping effect of the top sealing portion 221 of the battery 2. Furthermore, the stroke and pressure of the cylinder 3 can be adjusted according to the size and material characteristics of the battery 2 to adapt to the shaping needs of different types of batteries 2.

[0061] To further ensure the accuracy and efficiency of battery 2 shaping, this battery 2 shaping device also includes a positioning element 13. The positioning element 13 is used to fix the lower clamping plate 122 to one side of the base 11 in the thickness direction, ensuring the accuracy of the battery 2's position during the shaping process. In specific implementations, the positioning element 13 can be a hexagonal stud.

[0062] Specifically, the lower clamping plate 122 has a countersunk hole 1223, and the base 11 has a first through hole 111. The positioning member 13 fixes the lower clamping plate 122 to one side of the base 11 in the thickness direction through the first through hole 111 and the countersunk hole 1223. This structural design not only ensures the stability of the battery 2 during the shaping process.

[0063] Furthermore, the clamp 1 also includes at least one pad 14, which has a second through hole 141. The positioning member 13 fixes the lower clamp 122 to one side of the base 11 in the thickness direction through the first through hole 111, the second through hole 141 of the at least one pad 14, and the countersunk hole 1223. The use of the pad 14 can increase the contact area between the lower clamp 122 and the base 11, thereby dispersing pressure and reducing local wear on the base 11. At the same time, the thickness of the pad 14 can be adjusted as needed to accommodate batteries 2 of different thicknesses, further improving the adaptability and flexibility of the device.

[0064] In summary, the battery 2 shaping device provided in this embodiment effectively solves the problems existing in the prior art, improves the structural stability and production efficiency of the battery 2 packaging shell 22, and reduces the defect rate.

[0065] Other aspects that are the same as in Implementation Method 1 will not be described again in this implementation method.

[0066] Implementation Method 3

[0067] like Figure 1-4 As shown, unlike Embodiment 1, in order to shape the battery 2 tabs 23 simultaneously with the packaging shell 22, the battery 2 shaping device of this application provides an extension 231 extending from the top seal 221 for the tabs 23 of the cell 21; the upper clamping plate 121 is provided with a second chamfer 1212, and the lower clamping plate 122 is provided with a second recess 1222; the second chamfer 1212 and the second recess 1222 shape the extension 231 by clamping it. During the battery 2 shaping process, the cooperating clamping of the second chamfer 1212 and the second recess 1222 can precisely shape the extension 231 of the battery 2 tabs 23. This design not only ensures the stability of the battery 2 tabs 23 under external pressure, but also avoids the performance degradation of the battery 2 caused by the deformation of the tabs 23. By precisely controlling the curvature and position of the second chamfer 1212 and the second recess 1222, it can be ensured that the battery 2 tab 23 maintains good electrical connection performance after shaping, thereby ensuring that the overall electrical performance of the battery 2 is not affected.

[0068] Furthermore, the arc center angle range of the second chamfer 1212 and the second recess 1222 is also 60°-90°, preferably 90°. This design ensures that the tab 23 is uniformly shaped under pressure, avoiding stress concentration and thus protecting the battery 2 tab 23 from damage. The arc-shaped chamfer and recess design prevents sharp stress concentration points from forming at the edges of the tab 23 during the shaping process, improving the safety and reliability of the battery 2. In summary, the battery 2 shaping device provided in this embodiment can not only effectively solve the bending and skewing problem that may occur after the battery 2 packaging shell 22 is sealed twice, but also accurately shape the battery 2 tab 23, ensuring the overall structural stability and electrical performance of the battery 2, thereby improving production efficiency and product quality.

[0069] Other aspects that are the same as in Implementation Method 1 will not be described again in this implementation method.

[0070] The above are merely preferred embodiments of this application and are 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 battery shaping device comprising a jig (1) for shaping a battery (2), said jig (1) comprising a base (11) for placing said battery (2) and a clamping plate (12) for shaping said battery, characterized in that, The battery (2) comprises a packaging shell (22) and an electric core (21) arranged in the packaging shell (22), and the electric core (21) is fixedly connected with a tab (23), and the packaging shell (22) is provided with a top sealing part (221) covering part of the tab (23); The clamping plate (12) comprises an upper clamping plate (121) and a lower clamping plate (122), the upper clamping plate (121) is provided with a first recess (1211), and the lower clamping plate (122) is provided with a first chamfer (1221); The first recess (1211) and the first chamfer (1221) reshape the top sealing part (221) by clamping the top sealing part (221).

2. A battery shapmg device according to claim 1, wherein The upper clamping plate (121) is fixedly connected with an air cylinder (3), and the air cylinder (3) is used for driving the upper clamping plate (121) to move along the height direction of the base (11).

3. The cell shaper of claim 1, wherein The clamp (1) further comprises a positioning piece (13), and the positioning piece (13) is used for fixing the lower clamping plate (122) on one side in the thickness direction of the base (11).

4. A battery shapmg device according to claim 3, wherein The lower clamping plate (122) is provided with a counterbore (1223), the base (11) is provided with a first through hole (111), and the positioning piece (13) fixes the lower clamping plate (122) on one side in the thickness direction of the base (11) through the first through hole (111) and the counterbore (1223).

5. A cell shaping device according to claim 4, wherein The clamp (1) further comprises at least one layer of a backing plate (14), and the backing plate (14) is provided with a second through hole (141); The positioning piece (13) fixes the lower clamping plate (122) on one side in the thickness direction of the base (11) through the first through hole (111), the second through hole (141) of the at least one layer of the backing plate (14) and the counterbore (1223).

6. The cell shaper of claim 1, wherein The tab (23) is provided with an extension part (231) extending out of the top sealing part (221); The upper clamping plate (121) is provided with a second chamfer (1212), and the lower clamping plate (122) is provided with a second recess (1222); The second chamfer (1212) and the second recess (1222) reshape the extension part (231) by clamping the extension part (231).

7. A cell shaping device according to claim 6, wherein The second chamfer (1212) and the second recess (1222) are both circular arc shapes.

8. A battery shapmg device according to claim 6, wherein The central angle range of the second chamfer (1212) and the second recess (1222) is 60°-90°.

9. The cell shaper of claim 1, wherein The first recess (1211) and the first chamfer (1221) are both circular arc shapes.

10. A battery shapmg device according to claim 9, wherein The central angle range of the first recess (1211) and the first chamfer (1221) is 60°-90°.

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