Aluminum-plastic film forming mold and air bag structure

Abstract

The utility model discloses an aluminum plastic film forming die and an air bag structure, which comprise an upper die plate, a plurality of air bag concave dies are arranged on the upper die plate, and a plurality of main concave dies which are arranged side by side are arranged on one side of the plurality of air bag concave dies and are used for placing roll cores; an air bag die core is arranged on the lower die plate corresponding to each air bag female die, and a main die core is arranged at the position corresponding to each main female die; each air bag mold core is provided with an inclined face, and the overall length of each air bag mold core is lengthened to form a lengthened section. According to the utility model, the inclined surface is arranged on the air bag mold core and the overall length is increased, so that an aluminum plastic film does not need to be subjected to additional flaring operation in the forming process, the flaring problem caused by heat radiation in a traditional small square pit structure is avoided, the adhesion risk caused by radiation heat in the heat sealing process is reduced, and the production efficiency is improved. And the packaging structure is particularly suitable for packaging short battery cells.

Description

Technical Field

[0001] The utility model relates to the field of polymer batteries, and particularly relates to an aluminum-plastic film forming die and an air bag structure. Background Art

[0002] In the traditional battery manufacturing process, in order to ensure the smooth progress of the liquid injection process, a small square pit is usually punched in the battery cell structure and flared before liquid injection. However, this design has some problems:

[0003] Adhesion caused by heat radiation: During the encapsulation process, due to heat radiation, the flared part may adhere, resulting in insufficient encapsulation or defects.

[0004] In order to expand the small square pit, additional manual steps are required, increasing the manufacturing cost and time;

[0005] During the liquid injection process, the improper opening may cause the electrolyte to flow out, resulting in battery cell contamination, and less liquid injection into the battery cell, thereby affecting the performance and safety of the battery cell. Summary of the Utility Model

[0006] In order to solve the above problems, the utility model provides an aluminum-plastic film forming die and an air bag structure. By setting an inclined surface on the air bag die core and extending the overall length, the aluminum-plastic film does not need to be flared additionally during the forming process, avoiding the flaring problem caused by heat radiation in the traditional small square pit structure, reducing the adhesion risk caused by radiation heat during the heat sealing process, and being particularly suitable for the encapsulation of shorter battery cells.

[0007] The utility model is realized by the following technical solutions: An aluminum-plastic film forming die, comprising:

[0008] An upper template, on which a plurality of air bag female dies are arranged, and on one side of the plurality of air bag female dies, a plurality of main female dies are arranged side by side for placing a core roll;

[0009] A lower template, on which an air bag die core is arranged corresponding to each air bag female die, and a main die core is arranged corresponding to the position of each main female die;

[0010] An inclined surface is arranged on each air bag die core, and the overall length of each air bag die core is lengthened to form a lengthened section.

[0011] As a preferred technical solution, an anti-slip texture is further arranged on one surface of the upper template relative to the lower template.

[0012] A polymer battery cell air bag structure without opening and preventing heat radiation of the utility model is processed by the aluminum-plastic film forming die. The air bag structure comprises an air bag main body and an air bag, and the processed air bag main body forms an opening depth of 0.5-0.7 mm on one side of the heat-sealed edge.

[0013] The beneficial effects of the present utility model are as follows: By providing an inclined surface on the airbag mold core and extending the overall length, the aluminum-plastic film does not require additional flaring operations during the forming process, avoiding the flaring problem caused by heat radiation in the traditional small square pit structure, reducing the adhesion risk caused by radiant heat during the heat sealing process, and being particularly suitable for the encapsulation of shorter battery cores.

[0014] By designing the inclined surface and the lengthened section of the airbag mold core, there is no need for additional opening and flaring operations on the aluminum-plastic film before liquid injection. This reduces the manual operation steps, optimizes the production process, improves the production efficiency, and significantly reduces the production cost.

[0015] In the traditional process, since flaring is required before liquid injection, the opening of the aluminum-plastic film may be exposed to the air, increasing the risk of contamination. However, the design of the present utility model eliminates the flaring operation, reducing the exposure opportunity of the aluminum-plastic film during the encapsulation process, thereby reducing the contamination risk during the liquid injection process and improving the cleanliness and yield of the product. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Explosion diagram of the mold of the present utility model Figure 1 ;

[0018] Figure 2 Explosion diagram of the mold of the present utility model Figure 2 ;

[0019] Figure 3 Front view of the mold of the present utility model;

[0020] Figure 4 Structural schematic diagram of the airbag in the prior art;

[0021] Figure 5 Structural schematic diagram of the improved airbag of the present utility model;

[0022] Figure 6 Schematic diagram of the dimension marking of the opening position of the airbag of the present utility model;

[0023] Explanation of the reference numerals:

[0024] 1. Upper template; 2. Airbag female die; 3. Main female die; 4. Inclined surface; 5. Lower template; 6. Airbag core; 7. Main core; 8. Airbag body; 9. Airbag; 10. Heat-sealed edge; 11. Heat radiation adhesion area. Detailed implementation manners

[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0026] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0027] As Figure 1 As shown, a plastic-aluminum film forming die of the present utility model includes an upper template 1, on which a plurality of airbag female dies 2 are provided. On one side of the plurality of airbag female dies 2, a plurality of main female dies 3 arranged side by side are provided for placing a core; a lower template 5, on which an airbag core 6 is provided corresponding to each airbag female die, and a main core 7 is provided corresponding to the position of each main female die 3;

[0028] As Figure 2 And Figure 3 As shown, an inclined surface 4 is provided on each airbag core, and the overall length of each airbag core is lengthened to form a lengthened section. Due to the provision of the inclined surface, the airbag core 6 will not be pressed to the bottom when pressing the airbag, and an opening depth of 0.5 - 0.7 mm will be formed at the position of the inclined surface 4, so that the purpose of avoiding flaring can be achieved.

[0029] Wherein, an anti-slip texture is further provided on one side of the upper template 1 relative to the lower template 5. A polymer battery cell airbag structure without opening and preventing heat radiation of the present utility model is processed by a plastic-aluminum film forming die. The airbag structure includes an airbag body and an airbag. An opening depth of 0.5 - 0.7 mm is formed on one side of the processed airbag body where the heat-sealed edge is located. In this embodiment, the optimal value can be 0.6 mm, as Figure 6 shown.

[0030] In the prior art, as Figure 4 shown, an airbag 9 is formed on an airbag body 8 through a die, and heat sealing needs to be performed on one side of the airbag body. Since flaring and liquid injection are required before heat sealing, due to the unreasonable design of the prior art, when heat-sealing the heat-sealed edge 10, a heat radiation adhesion area 11 will be formed on the airbag, resulting in adhesion of the airbag body and inability to process the airbag. And in this embodiment, as Figure 5As shown, since an inclined surface is provided on the air bag mold core and the length of the air bag mold core is lengthened, the air bag body will not be adhered to by heat radiation during heat sealing, and the area of the heat-sealed edge is increased and away from the air bag area. In addition, due to the inclined surface, an opening depth of 0.6 mm is reserved when the mold is pressed down, so that liquid injection can be completed without expanding the opening.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. An aluminum-plastic film forming mold, comprising: An upper template, on which a plurality of airbag concave molds are provided, and on one side of the plurality of airbag concave molds, a plurality of main concave molds arranged side by side are provided for placing a core; A lower template, on which an airbag mold core is provided corresponding to each airbag concave mold, and a main mold core is provided corresponding to the position of each main concave mold; It is characterized in that an inclined surface is provided on each airbag mold core, and the overall length of each airbag mold core is lengthened to form a lengthened section.

2. The aluminum-plastic film forming die according to claim 1, characterized in that: The surface of the upper template opposite to the lower template is also provided with anti-slip textures.

3. An airbag structure, characterized in that: Processed by the aluminum-plastic film forming mold according to any one of claims 1 to 2, the airbag structure includes an airbag main body and an airbag, and the processed airbag main body forms an opening depth of 0.5-0.7 mm on the heat-sealed edge side.

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