Packaging clamp and battery processing equipment

Abstract

The utility model belongs to the technical field of battery processing, and discloses a packaging clamp and battery processing equipment. The battery comprises an outer covering film and a battery cell arranged in the outer covering film, the outer covering film comprises a top sealing edge, the packaging clamp comprises a flattening structure and two clamping plates movably connected, the two clamping plates can be arranged in a stacked mode to clamp the battery or the outer covering film, a supporting face is arranged at one end, in the X direction, of each clamping plate, and the supporting faces are arranged in the X direction. The supporting surface is used for supporting at least part of the top sealing edge; the flattening structure is arranged on the clamping plate and used for flattening the top sealing edge. The inward or outward curling degree of the top sealing edge can be reduced through the clamping matching of the upper supporting surfaces of the two clamping plates; by arranging the flattening structure, the curled top sealing edge can be flattened, the curling defect of the top sealing edge is eliminated, the processing yield is improved, and the scrapping of the outer covering film and the battery cell is reduced; the top sealing edge does not need to be manually flattened, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a packaging fixture and battery processing equipment. Background Art

[0002] Soft-pack batteries use aluminum-plastic film to encapsulate the battery cells. The encapsulation process generally includes: punching the aluminum-plastic film to form a pit on the aluminum-plastic film to accommodate the battery cells; placing the aluminum-plastic film in a packaging fixture, folding the aluminum-plastic film in half, and the side opposite the fold line of the aluminum-plastic film is the top seal, and the side adjacent to the fold line is the side seal; after cutting the top seal, open the packaging fixture, place the battery cell in the pit, close the packaging fixture, and use packaging equipment to encapsulate the top seal and side seal separately, and the unencapsulated side adjacent to the fold line is used to inject electrolyte or liquid additives; finally, after standing, pre-encapsulate the unencapsulated side to form a semi-finished soft-pack battery.

[0003] The aluminum-plastic film will release a certain amount of stress after punching. In a high dew point environment, water loss causes the top sealing edge of the aluminum-plastic film to curl outward or inward, resulting in incomplete cutting of the thick line of the top sealing edge during cutting; in addition, in the case of the top sealing edge curling outward, when the battery cell is placed in the pit and the packaging fixture is closed, the fixture's support for the top sealing edge is poor, causing the aluminum-plastic film on the lower layer to curl downward more severely. During top sealing, it is easy to have a false seal, and the inner side of the aluminum-plastic film contacts the head, causing the head to stick, affecting the subsequent top sealing effect; in the case of the top sealing edge curling inward, it is easy for the insert plate to directly poke the lower mold shell and cause damage to the film shell at the shell removal station. If not discovered in time, the battery will be scrapped. Utility Model Content

[0004] The purpose of the utility model is to provide a packaging fixture and battery processing equipment, which can effectively solve the production abnormalities caused by the curling of aluminum-plastic film, improve the packaging yield, and reduce the scrapping of aluminum-plastic film and battery cells.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A packaging fixture for battery packaging, wherein the battery comprises an outer film and a battery cell disposed within the outer film, wherein the outer film comprises a top sealing edge, and the packaging fixture comprises:

[0007] The two clamping plates are movably connected and can be stacked to clamp the battery or the outer film. One end of the clamping plate along the X direction is provided with a support surface, and the support surface is used to support at least part of the top sealing edge;

[0008] A flattening structure is provided on the splint, and is used for flattening the top sealing edge.

[0009] As an optional solution of the above-mentioned packaging fixture, the flattening structure includes:

[0010] A communication hole, the communication hole being provided on the clamping plate and being used for switchably connecting the gas source and the air extraction device;

[0011] An air hole is provided on the supporting surface and is connected to the communicating hole.

[0012] As an optional solution of the above packaging fixture, at least two groups of the air holes are provided, and the at least two groups of the air holes are spaced apart along the Y direction, and the Y direction is perpendicular to the X direction.

[0013] As an optional solution of the above-mentioned packaging fixture, when the two clamps are stacked, the air holes on the two clamps are arranged opposite to each other.

[0014] As an optional solution of the above packaging fixture, the size of the support surface along the X direction is 4 mm-7 mm.

[0015] As an optional solution of the above-mentioned packaging fixture, the flattening structure includes:

[0016] A roller shaft, the roller shaft being located on the side of the clamping plate provided with the supporting surface, the roller shaft extending along the Y direction, a portion of the top sealing edge being able to extend between the roller shafts corresponding to the two clamping plates, the Y direction being perpendicular to the X direction and both being parallel to the clamping plates;

[0017] A driving member is provided on the clamping plate and is connected to the roller shaft to drive the roller shaft to move along the X direction.

[0018] As an optional solution of the above-mentioned packaging fixture, the driving members are provided at both ends of the clamping plate along the Y direction.

[0019] As an optional solution to the above-mentioned packaging fixture, the clamp is provided with battery cell positioning grooves and air bag bearing surfaces arranged along the Y direction, the support surface is coplanar with the air bag bearing surface, and the Y direction and the X direction are perpendicular and parallel to the clamp.

[0020] As an optional solution of the above packaging fixture, the two clamping plates are rotatably connected.

[0021] A battery processing device comprises the above-mentioned packaging fixture.

[0022] Beneficial effects of the utility model:

[0023] In the packaging fixture provided by the utility model, the top sealing edge of the aluminum-plastic film can be supported during the fixed cutting or packaging process by arranging the support surface, and the degree of curling of the top sealing edge inward or outward can be reduced by the clamping cooperation of the support surfaces on the two clamping plates to ensure the cutting and packaging effect; by arranging the flattening structure, the curled top sealing edge can be smoothed and the curling defect of the top sealing edge can be eliminated, thereby ensuring the cutting and packaging effect, improving the processing yield, and reducing the scrapping of the outer film and the battery cell; there is no need to manually flatten the top sealing edge, thus avoiding safety accidents and reducing the waste of personnel costs.

[0024] The battery processing equipment provided by the utility model adopts the above-mentioned packaging fixture, which can effectively solve the production abnormalities caused by the curling of the aluminum-plastic film, improve the packaging yield, and prevent the burnt aluminum-plastic film and battery cells from being scrapped. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of the packaging fixture provided by the utility model in a closed state;

[0026] Figure 2 This is a structural schematic diagram of the packaging fixture provided by the utility model in an open state;

[0027] Figure 3 This is a front view of the packaging fixture provided by the utility model in a closed state.

[0028] In the picture:

[0029] 10. Clamping plate; 10a. Upper clamping plate; 10b. Lower clamping plate; 11. Cell positioning groove; 12. Air bag bearing surface; 13. Supporting surface; 131. Air hole; 14. Connecting hole; 20. Rolling assembly; 21. Roller shaft; 22. Driving member; 221. Main body; 222. Output end. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0031] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0034] This embodiment provides a packaging fixture for use in a battery packaging process, which can be used to fold the outer film of a battery, clamp and fix the outer film during cutting, or clamp and fix the battery to be packaged during the packaging process.

[0035] It should be noted here that the battery includes an outer film and a battery cell. The outer film is provided with punched pits for accommodating the battery cell. The outer film needs to be folded in half before wrapping the battery cell. The edge of the outer film opposite to the folding line is the top seal. The two layers of top seals will be top-sealed later.

[0036] Optionally, the outer film may be an aluminum-plastic film, which includes a barrier layer in the middle and outer barrier layers and heat-sealing layers on both sides of the barrier layer. The barrier layer may be aluminum foil, the outer barrier layer may be a nylon layer, and the heat-sealing layer may be a CPP (Chlorinated Polypropylene) layer.

[0037] like Figure 1 and Figure 2As shown, the packaging fixture includes two movably connected clamps 10. The two clamps 10 can be stacked to clamp the battery or outer film to be packaged. A support surface 13 is provided at one end of the clamp 10 along the X direction. The support surface 13 is used to support at least part of the top seal. The clamp 10 is provided with a flattening structure. The flattening structure is used to flatten the top seal to eliminate the inward or outward curling of the top seal. By providing the support surface 13, the top seal of the aluminum-plastic film can be supported during the fixed cutting or packaging process. The clamping cooperation of the support surfaces 13 on the two clamps 10 can reduce the degree of inward or outward curling of the top seal to ensure the cutting and packaging effect. By providing the flattening structure, the curled top seal can be smoothed and the curling defect of the top seal can be eliminated, thereby ensuring the cutting and packaging effect, improving the processing yield, and reducing the scrapping of the outer film and battery cells. There is no need to manually flatten the top seal, avoiding safety accidents and reducing waste of personnel costs.

[0038] The outer film is generally rectangular, and the top sealing edge formed after the outer film is folded is a long strip structure. In order to better support the top sealing edge, in some embodiments, the shape of the support surface 13 is a rectangle extending along the Y direction, wherein the Y direction is perpendicular to the X direction and both are parallel to the splint 10.

[0039] For the convenience of introduction, when the packaging fixture is closed, the two clamps 10 are stacked up and down, and the two clamps 10 are respectively an upper clamp 10a and a lower clamp 10b. The top seal in contact with the upper clamp 10a is the upper top seal, and the top seal in contact with the lower clamp 10b is the lower top seal.

[0040] In some embodiments, the clamping plates 10 include a clamping surface that contacts the outer film. One edge of the clamping surface, along the X-direction, forms a support surface 13. When the two clamping plates 10 are stacked and closed, the support surfaces 13 on the two clamping plates 10 face each other. After the aluminum-plastic film is placed in the packaging fixture and folded and clamped, a portion of the top seal is clamped and secured by the support surfaces 13 of the two clamping plates 10. The support and compression of the support surfaces 13 can eliminate or reduce the degree of curling of the top seal. The edge of the top seal extends outside the clamping plates 10 along the X-direction to facilitate top sealing.

[0041] To improve the support and flattening effect on the top seal, in some embodiments, the support surface 13 can have a dimension of 4 mm to 7 mm along the X direction. When the dimension of the support surface 13 along the X direction is within this range, the support effect of the clamping plate 10 on the top seal can be enhanced, preventing the lower layer's top seal from curling downward more severely, thereby reducing problems such as a false top seal and sticking to the top seal head caused by the downward curling of the lower layer's top seal.

[0042] By way of example, typical non-limiting values for the dimensions of the support surface 13 along the X direction are 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm.

[0043] In some embodiments, the top sealing edge can be completely located between the two splints 10 and in contact with the support surface 13. During the top sealing, the top sealing head can act on the splint 10 and achieve the top sealing of the top sealing edge between the two splints 10 by heating the splint 10 or other means.

[0044] To improve the flattening effect of the top edge seal, in some embodiments, the flattening structure includes an air hole 131 provided on the support surface 13. A connecting hole 14 is also provided on the clamping plate 10. Connecting hole 14 communicates with air hole 131 and is used to switchably connect an air source and an air extraction device. When the air source or air extraction device is activated, it can blow or suck air toward the top edge seal through connecting hole 14 and air hole 131, respectively. This airflow generates a thrust or suction force on the top edge seal, thereby reducing the tendency of the top edge seal to curl outward or inward.

[0045] For example, when the top seal edge curls outward, the air source can be connected to the connecting hole 14, and the air source provides airflow to the air hole 131 through the connecting hole 14. After the airflow passes through the air hole 131, it acts on the outside of the top seal edge, which can apply thrust to the top seal edge, pushing the top seal edge to move toward the inside of the outer film, thereby reducing the tendency of the top seal edge to curl outward.

[0046] For example, when the top sealing edge curls inward, the vacuum device can be connected to the connecting hole 14. After the vacuum device is started, the gas in the connecting hole 14 and the air hole 131 is driven to flow to the outside of the packaging fixture, thereby forming a negative pressure on the outside of the outer film, thereby applying a vacuum adsorption force on the outside of the outer film, driving the top sealing edge to move to the outside of the outer film, thereby reducing the tendency of the top sealing edge to curl inward.

[0047] The outer film is generally rectangular, and the top sealing edge formed after the outer film is folded is a long strip structure. In order to improve the improvement effect of the curling of the top sealing edge, in some embodiments, a plurality of groups of air holes 131 are provided on the support surface 13, each group of air holes 131 includes at least one air hole 131, and at least two groups of air holes 131 are arranged at intervals along the Y direction to make the force of the air flow on the top sealing edge more evenly distributed.

[0048] Exemplarily, three groups of air holes 131 are provided, each group includes three air holes 131 , and one group is provided at each of the two ends and the middle of the support surface 13 along the Y direction to achieve a better flattening effect of the top sealing edge.

[0049] In some embodiments, the number of groups of the air holes 131 and the number of the air holes 131 in each group can be adjusted according to actual needs.

[0050] In some embodiments, when the two plywood panels 10 are in a stacked and closed state, the air holes 131 on the two plywood panels 10 are arranged opposite each other so that the force on the two layers of top sealing is even, which is beneficial to improving the flattening effect of the top sealing.

[0051] In some embodiments, when the two splints 10 are in a stacked and closed state, the air holes 131 on the two splints 10 may also be staggered.

[0052] In some embodiments, the flattening structure includes a roller assembly 20, which includes a roller shaft 21 and a driving member 22. The roller shaft 21 is rotatably disposed on a side of the clamping plate 10 provided with the support surface 13, and the roller shaft 21 extends along the Y direction. The driving member 22 is disposed on the clamping plate 10 and connected to the roller shaft 21 to drive the roller shaft 21 to move along the X direction, thereby moving closer to or away from the clamping plate 10. Specifically, the driving member 22 includes a main body 221 and an output end 222. The main body 221 is disposed on the clamping plate 10, and the output end 222 can reciprocate along the X direction. The output end 222 is connected to the roller shaft 21.

[0053] It should be noted that each clamping plate 10 is provided with a roller 21 and a driving member 22. Figure 3 As shown, when the two splints 10 are in a stacked and closed state, the two rollers 21 are arranged in parallel, and a accommodating gap for two layers of top seals is formed between the two rollers 21. Part of the top seal extends into the accommodating gap, and the rollers 21 are driven to move back and forth along the X direction by the driving member 22, so that the top seal is rolled by the rollers 21 to achieve the effect of smoothing the top seal.

[0054] To prevent the top seal from wrinkling due to friction during the movement of the roller 21, in some embodiments, the roller 21 is rotatably connected to the output end 222 of the driving member 22 to reduce the friction between the roller 21 and the top seal, thereby avoiding wrinkling.

[0055] To improve the stability of the roller 21 moving along the X direction, each clamp 10 is provided with a driving member 22 at both ends along the Y direction. The driving members 22 at both ends are respectively connected to the ends of the corresponding roller 21 to make the roller 21 more stable during movement.

[0056] In some embodiments, the driving member 22 may be a cylinder, a hydraulic cylinder, or a linear motor, or may be a screw-nut driving structure or a rack-and-pinion driving structure, as long as the roller 21 can be reciprocated along the X direction.

[0057] It should be noted here that the accommodating gap can be equal to or slightly smaller than the sum of the thicknesses of the two layers of top sealing edges, so that the roller 21 has a certain squeezing force on the top sealing edge to achieve the effect of smoothing the top sealing edge.

[0058] To simplify the battery processing, in some embodiments, the two clamping plates 10 are rotatably connected to achieve switching between closed and open states. During the relative rotation of the two clamping plates 10, the aluminum-plastic film can also be folded, eliminating the need for additional folding stations or tooling, which helps reduce costs.

[0059] In some embodiments, the two splints 10 may be connected by a hinge, so that the two splints 10 can be roughly flattened in the open state to facilitate the placement of the outer film.

[0060] like Figure 2 As shown, a cell positioning groove 11 is provided at one end of the clamping surface along the Y direction, and an airbag bearing surface 12 is formed at the other end. The cell positioning groove 11 is recessed relative to the airbag bearing surface 12. When the outer film is placed, the recess on the outer film corresponds to the cell positioning groove 11. This allows the cell positioning groove 11 to avoid the recess formed by the punching of the outer film, thus preventing damage to the recess when the packaging fixture is closed. After the fixture is closed, the position of the outer film corresponding to the airbag bearing surface 12 is used to form an airbag.

[0061] The packaging fixture provided by the utility model solves the problem that the outer film curls up in a high dew point environment, affecting the top seal edge cutting, top seal or outer film folding, which can reduce the waste of the outer film and the scrapping of the battery cells, and improve the packaging yield and efficiency; in addition, there is no need for workers to enter the machine to smooth the outer film, avoiding safety accidents; compared with using aluminum-plastic film with improved curling, it can save 20% of costs, greatly improving product competitiveness.

[0062] This embodiment also provides a battery processing device, including the aforementioned packaging fixture. The battery processing device also includes a workbench, a loading mechanism, a closing drive assembly, and a packaging mechanism. The workbench is provided with at least one workstation, each of which is equipped with a packaging fixture. The closing drive assembly is provided on the workbench and is used to drive the two clamps 10 to rotate relative to each other to achieve the closing and opening of the packaging fixture. The loading mechanism is provided next to the workbench and is used to place the outer film and / or battery cells on the packaging fixture. The packaging mechanism is provided next to the workbench and is used for packaging.

[0063] Optionally, the workbench may be a rotary workbench on which a plurality of workstations are arranged. After the workbench rotates, the plurality of workstations can sequentially pass through the positions of the loading mechanism and the packaging mechanism to achieve continuous production.

[0064] It should be noted here that the workbench, the loading mechanism, the closing drive assembly and the packaging mechanism are all existing technologies and will not be described in detail in this embodiment.

[0065] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A packaging fixture for battery packaging, wherein the battery comprises an outer film and a battery cell disposed within the outer film, wherein the outer film comprises a top sealing edge, characterized in that: The packaging fixture comprises: Two movably connected clamping plates (10), the two clamping plates (10) can be stacked to clamp the battery or the outer film, and one end of the clamping plate (10) along the X direction is provided with a support surface (13), and the support surface (13) is used to support at least part of the top sealing edge; A flattening structure is provided on the clamping plate (10), and is used for flattening the top sealing edge.

2. The packaging fixture according to claim 1, wherein: The flattened structure comprises: A communication hole (14), the communication hole (14) being provided on the clamping plate (10), the communication hole (14) being used for switchably connecting the gas source and the gas extraction device; An air hole (131), the air hole (131) is provided on the supporting surface (13) and is in communication with the communication hole (14).

3. The packaging fixture according to claim 2, wherein: At least two groups of the air holes (131) are provided, and the at least two groups of the air holes (131) are spaced apart along the Y direction, and the Y direction is perpendicular to the X direction.

4. The packaging fixture according to claim 2, wherein: When the two clamping plates (10) are stacked, the air holes (131) on the two clamping plates (10) are arranged opposite to each other.

5. The packaging fixture according to any one of claims 1 to 4, characterized in that: The size of the support surface (13) along the X direction is 4 mm to 7 mm.

6. The packaging fixture according to any one of claims 1 to 4, characterized in that: The flattened structure comprises: A roller shaft (21), the roller shaft (21) is located on a side of the clamping plate (10) provided with the supporting surface (13), the roller shaft (21) extends along the Y direction, a portion of the top sealing edge can extend between the roller shafts (21) corresponding to the two clamping plates (10), the Y direction is perpendicular to the X direction and both are parallel to the clamping plates (10); A driving member (22) is provided on the clamping plate (10), and the driving member (22) is connected to the roller shaft (21) to drive the roller shaft (21) to move along the X direction.

7. The packaging fixture according to claim 6, wherein: The driving members (22) are provided at both ends of the clamping plate (10) along the Y direction.

8. The packaging fixture according to any one of claims 1 to 4, characterized in that: The clamping plate (10) is provided with battery cell positioning grooves (11) and an air bag bearing surface (12) arranged along the Y direction, the supporting surface (13) is coplanar with the air bag bearing surface (12), and the Y direction and the X direction are perpendicular and parallel to the clamping plate (10).

9. The packaging fixture according to any one of claims 1 to 4, characterized in that: The two clamping plates (10) are rotatably connected.

10. A battery processing device, characterized in that: Comprising the packaging fixture according to any one of claims 1-9.

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