CN219832824U - Aluminum plastic film structure for cylindrical battery and cylindrical battery thereof - Google Patents
Aluminum plastic film structure for cylindrical battery and cylindrical battery thereof Download PDFInfo
- Publication number
- CN219832824U CN219832824U CN202320651600.9U CN202320651600U CN219832824U CN 219832824 U CN219832824 U CN 219832824U CN 202320651600 U CN202320651600 U CN 202320651600U CN 219832824 U CN219832824 U CN 219832824U
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- Prior art keywords
- plastic film
- edge
- aluminum
- sealing
- mounting groove
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- 239000002985 plastic film Substances 0.000 title claims abstract description 107
- 229920006255 plastic film Polymers 0.000 title claims abstract description 107
- 229910052782 aluminium Inorganic materials 0.000 title description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title description 14
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 238000005520 cutting process Methods 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 239000005025 cast polypropylene Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 230000001447 compensatory effect Effects 0.000 abstract description 4
- 230000037303 wrinkles Effects 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses an aluminum-plastic film structure for a cylindrical battery, which comprises a first edge-sealing aluminum-plastic film and a second edge-sealing aluminum-plastic film, wherein a first mounting groove and an exhaust groove are formed in the first edge-sealing aluminum-plastic film, a first cutting line is arranged at the edge of the first edge-sealing aluminum-plastic film, which is close to the first mounting groove, and a first edge-sealing part is arranged between the first cutting line and the first mounting groove; and a second installation groove is formed in the second edge-sealed aluminum-plastic film, a second cutting line is arranged on the second edge-sealed aluminum-plastic film, and a second edge sealing part is arranged between the second cutting line and the second installation groove. According to the aluminum-plastic film structure for the cylindrical battery, the cylindrical battery core is wrapped and heat-sealed in a mode that the first edge-sealed aluminum-plastic film and the second edge-sealed aluminum-plastic film are attached to each other, so that wrinkles caused by large compensatory deformation force when the aluminum-plastic film is folded can be avoided, flatness of edge-sealed positions is guaranteed, alignment precision of edge sealing of the battery can be guaranteed, and overall production and processing precision is higher.
Description
Technical Field
The utility model relates to the technical field of battery production and processing, in particular to an aluminum plastic film structure for a cylindrical battery and the cylindrical battery thereof.
Background
In the production and processing of the soft-package polymer cylindrical battery, a single-edge-sealing one-time shell punching technology is generally adopted to carry out processing operation on the aluminum-plastic film, namely, corresponding battery placement pits are punched on the aluminum-plastic film, and then the aluminum-plastic film is folded in half and heat-sealed, so that the cylindrical battery core is packaged and sealed.
However, when the aluminum-plastic film is processed by adopting a single-edge sealing one-time shell punching technology, the following problems exist:
1. when the aluminum plastic film punched by the single shell punching is in top sealing, the phenomena of wrinkling of the aluminum plastic film and uneven alignment of the edges of the aluminum plastic film are easy to occur, so that the reject ratio in the production process is increased, and the operation difficulty is increased;
2. after the aluminum-plastic film is punched into the shell, the aluminum-plastic film can be provided with fish tail lines, deformation and the like, and because the aluminum-plastic film is of an integral structure, larger compensatory deformation can be generated when the aluminum-plastic film is folded and sealed, so that the flatness of the sealed edge position is poor.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide an aluminum-plastic film structure for a cylindrical battery and a cylindrical battery thereof, wherein the aluminum-plastic film structure can reduce the deformation of the aluminum-plastic film and improve the alignment precision and flatness of the edge sealing of the battery.
The aim of the utility model is realized by the following technical scheme:
an aluminum plastic film structure for a cylindrical battery comprises: the aluminum plastic film with the first edge sealing comprises a first aluminum plastic film with the edge sealing and a second aluminum plastic film with the edge sealing, wherein a first installation groove and an exhaust groove are formed in the first aluminum plastic film with the edge sealing, the edge of the first aluminum plastic film with the edge sealing, which is close to the first installation groove, is provided with a first cutting line, and a first edge sealing part is arranged between the first cutting line and the first installation groove; a second mounting groove is formed in the second edge-sealed aluminum-plastic film, a second cutting line is arranged at the edge, close to the second mounting groove, of the second edge-sealed aluminum-plastic film, and a second edge sealing part is arranged between the second cutting line and the second mounting groove; when the second edge-sealing aluminum-plastic film is attached to the first edge-sealing aluminum-plastic film, the first mounting groove is communicated with the second mounting groove to form a battery placing cavity, and the first edge-sealing portion is aligned with the second edge-sealing portion.
In one embodiment, the first mounting groove and the second mounting groove are semi-cylindrical grooves.
In one embodiment, an air guiding inclined plane is arranged on one side, close to the first mounting groove, of the air exhausting groove.
In one embodiment, the first edge-sealed aluminum-plastic film is provided with a positioning notch, and the positioning notch is communicated with the exhaust groove.
In one embodiment, the positioning notch is a conical notch.
In one embodiment, the second edge-sealing aluminum-plastic film is provided with positioning convex particles, and when the second edge-sealing aluminum-plastic film is attached to the first edge-sealing aluminum-plastic film, the positioning convex particles are arranged in the positioning notch.
In one embodiment, the positioning boss is a conical boss.
In one embodiment, the first edge sealing portion and the second edge sealing portion are both provided with a heat seal coating.
In one embodiment, the heat seal coating is a cast polypropylene film layer.
The cylindrical battery comprises the aluminum-plastic film structure for the cylindrical battery and the battery core, wherein the battery core is arranged in the first mounting groove or the second mounting groove.
Compared with the prior art, the utility model has at least the following advantages:
1. according to the aluminum-plastic film structure for the cylindrical battery, the first edge-sealed aluminum-plastic film and the second edge-sealed aluminum-plastic film are arranged to be of the independent two-piece aluminum-plastic film structure, so that the phenomena of wrinkling of the aluminum-plastic film and uneven alignment of the edges of the aluminum-plastic film can be avoided, and the yield is improved.
2. According to the aluminum-plastic film structure for the cylindrical battery, the cylindrical battery core is wrapped and heat-sealed in a mode that the first edge-sealed aluminum-plastic film and the second edge-sealed aluminum-plastic film are attached to each other, so that wrinkles caused by large compensatory deformation force when the aluminum-plastic film is folded can be avoided, flatness of edge-sealed positions is guaranteed, alignment precision of edge sealing of the battery can be guaranteed, and overall production and processing precision is higher.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described.
Fig. 1 is a schematic structural view of an aluminum plastic film structure for a cylindrical battery according to an embodiment of the present utility model.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Referring to fig. 1, an aluminum plastic film structure 10 for a cylindrical battery includes: the first edge-sealed aluminum-plastic film 100 and the second edge-sealed aluminum-plastic film 200, wherein a first mounting groove 110 and an exhaust groove 120 are formed in the first edge-sealed aluminum-plastic film 100, a first cutting line 130 is formed at the edge of the first edge-sealed aluminum-plastic film 100, which is close to the first mounting groove 110, and a first edge sealing part 140 is arranged between the first cutting line 130 and the first mounting groove 110; the second edge-sealed aluminum-plastic film 200 is provided with a second mounting groove 210, a second cutting line 220 is arranged at the edge of the second edge-sealed aluminum-plastic film 200, which is close to the second mounting groove 210, and a second edge sealing part 230 is arranged between the second cutting line 220 and the second mounting groove 210; when the second edge-sealed plastic-aluminum film 200 is adhered to the first edge-sealed plastic-aluminum film 100, the first mounting groove 110 is communicated with the second mounting groove 210 to form a battery placing cavity, and the first edge-sealed portion 140 is aligned with the second edge-sealed portion 230. In this embodiment, the first mounting groove 210 and the second mounting groove 220 are both semi-cylindrical grooves, so that the cylindrical battery cell can be subjected to a wrapping heat-sealing operation.
It should be noted that, the first edge sealing plastic-aluminum film 100 is provided with the first mounting groove 110, so that the cylindrical battery cell can be placed, and the exhaust groove 120 is provided, so that the exhaust effect can be achieved during the heat sealing operation, and the gas in the battery placing cavity during the heat sealing operation is exhausted. The first cutting line 130 can perform a cutting and positioning function, so that the cutting operation precision of the first edge sealing aluminum-plastic film 100 is higher; similarly, the second edge-sealed aluminum-plastic film 200 is provided with the second mounting groove 210, so that a battery placing cavity can be formed by the second edge-sealed aluminum-plastic film 200 and the first mounting groove 110, namely, when the cylindrical battery cell is placed in the first mounting groove 110, the exposed part of the cylindrical battery cell is arranged in the second mounting groove 210 by attaching the second edge-sealed aluminum-plastic film 200 to the first edge-sealed aluminum-plastic film 100, and therefore the cylindrical battery cell is completely wrapped; by providing the second cutting line 220, a cutter positioning function can be achieved during cutting of the second edge sealing aluminum-plastic film 200, and thus accuracy of cutting processing is improved. When the second edge-sealed aluminum-plastic film 200 is attached to the first edge-sealed aluminum-plastic film 100, the first edge-sealed portion 140 and the second edge-sealed portion 230 are aligned, so that the heat sealing treatment can be performed on the first edge-sealed portion 140 and the second edge-sealed portion 230, and the heat sealing processing of the soft-package polymer cylindrical battery is realized. In the embodiment, the first edge-sealed aluminum-plastic film 100 and the second edge-sealed aluminum-plastic film 200 are of separate two-piece aluminum-plastic film structures, and in actual notching, the cutter structure is arranged on the notching die, so that the aluminum-plastic film can be cut while notching, and the phenomena of wrinkling and uneven alignment of the edges of the aluminum-plastic film can be avoided, thereby improving the yield; meanwhile, the cylindrical battery cell is wrapped and heat-sealed in a mode that the first edge sealing aluminum-plastic film 100 and the second edge sealing aluminum-plastic film 200 are attached to each other, so that wrinkles generated due to large compensatory deformation force when the aluminum-plastic film is folded can be avoided, flatness of edge sealing positions is guaranteed, alignment precision of battery edge sealing can be guaranteed, and overall production and processing precision is higher.
In an embodiment, referring to fig. 1 again, an air guiding inclined plane 121 is disposed on a side of the air discharging groove 120 close to the first mounting groove, so that the discharged air can be guided, so that the air in the battery placing cavity can be discharged from the air discharging groove 120 more easily.
Further, a positioning notch 150 is formed on the first edge-sealed aluminum-plastic film 100, and the positioning notch 150 is communicated with the exhaust groove 120; the second edge-sealed aluminum-plastic film 200 is provided with a positioning convex particle 240, and when the second edge-sealed aluminum-plastic film 200 is attached to the first edge-sealed aluminum-plastic film 100, the positioning convex particle 240 is arranged in the positioning notch 150.
It should be noted that, by arranging the positioning notch 150 on the first edge-sealing aluminum-plastic film 100, the positioning notch can be matched with the positioning protrusion 240 on the second edge-sealing aluminum-plastic film 200, when the first edge-sealing aluminum-plastic film 100 is adhered to the second edge-sealing aluminum-plastic film 200, the positioning protrusion 240 and the positioning notch 150 can be aligned and placed, so that better positioning precision can be achieved, and the alignment precision of the edge sealing of the battery can be further improved. In this embodiment, the positioning notch 150 is a conical notch, and the positioning protrusion 240 is a conical protrusion, so that the positioning protrusion 240 can be conveniently aligned and placed in the positioning notch 150, so that the attaching operation precision of the first edge sealing aluminum-plastic film 100 and the second edge sealing aluminum-plastic film 200 is higher, and the operation is more convenient.
Referring to fig. 1 again, in an embodiment, the first edge sealing portion 140 and the second edge sealing portion 230 are provided with heat sealing coatings, so that the heat sealing effect of the first edge sealing portion 140 and the second edge sealing portion 230 can be improved; in this embodiment, the heat-seal coating is a cast polypropylene film layer, so that the heat resistance and ductility of the first edge sealing portion 140 and the second edge sealing portion 230 can be improved, and the adhesion degree and flatness of the first edge sealing portion 140 and the second edge sealing portion 230 are better.
In an embodiment, a cylindrical battery, including above-mentioned plastic-aluminum membrane structure and electric core for cylindrical battery, electric core sets up in first mounting groove 110 or in second mounting groove 210, so, adopts first banding plastic-aluminum membrane 100 and the mode that second banding plastic-aluminum membrane 200 laminate mutually to wrap up the heat-seal to electric core, can reduce the deformability of plastic-aluminum membrane, and can improve the counterpoint precision and the planarization of battery banding for holistic battery production quality obtains improving.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, which are within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. An aluminum-plastic film structure for a cylindrical battery, comprising:
the first edge-sealing aluminum-plastic film is provided with a first mounting groove and an exhaust groove, a first cutting line is arranged at the edge of the first edge-sealing aluminum-plastic film, which is close to the first mounting groove, and a first edge sealing part is arranged between the first cutting line and the first mounting groove; and
The second edge-sealing aluminum-plastic film is provided with a second mounting groove, a second cutting line is arranged at the edge of the second edge-sealing aluminum-plastic film, which is close to the second mounting groove, and a second edge sealing part is arranged between the second cutting line and the second mounting groove;
when the second edge-sealing aluminum-plastic film is attached to the first edge-sealing aluminum-plastic film, the first mounting groove is communicated with the second mounting groove to form a battery placing cavity, and the first edge-sealing portion is aligned with the second edge-sealing portion.
2. The aluminum-plastic film structure for a cylindrical battery according to claim 1, wherein the first mounting groove and the second mounting groove are both semicylindrical grooves.
3. The aluminum-plastic film structure for a cylindrical battery according to claim 1, wherein an air guide inclined surface is provided on a side of the air discharge groove close to the first mounting groove.
4. The aluminum-plastic film structure for the cylindrical battery according to claim 1, wherein a positioning notch is formed in the first edge-sealing aluminum-plastic film and communicated with the exhaust groove.
5. The aluminum-plastic film structure for a cylindrical battery according to claim 4, wherein the positioning notch is a conical notch.
6. The aluminum-plastic film structure for a cylindrical battery according to claim 4, wherein positioning convex particles are arranged on the second edge-sealing aluminum-plastic film, and the positioning convex particles are arranged in the positioning notch when the second edge-sealing aluminum-plastic film is adhered to the first edge-sealing aluminum-plastic film.
7. The aluminum-plastic film structure for a cylindrical battery according to claim 6, wherein the positioning convex particles are conical convex particles.
8. The aluminum-plastic film structure for a cylindrical battery according to claim 1, wherein heat-seal coatings are arranged on the first edge sealing portion and the second edge sealing portion.
9. The aluminum-plastic film structure for a cylindrical battery according to claim 8, wherein the heat-seal coating is a cast polypropylene film layer.
10. A cylindrical battery comprising the aluminum-plastic film structure for a cylindrical battery according to any one of claims 1 to 9, characterized by further comprising a battery cell disposed in the first mounting groove or the second mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320651600.9U CN219832824U (en) | 2023-03-28 | 2023-03-28 | Aluminum plastic film structure for cylindrical battery and cylindrical battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320651600.9U CN219832824U (en) | 2023-03-28 | 2023-03-28 | Aluminum plastic film structure for cylindrical battery and cylindrical battery thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832824U true CN219832824U (en) | 2023-10-13 |
Family
ID=88285086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320651600.9U Active CN219832824U (en) | 2023-03-28 | 2023-03-28 | Aluminum plastic film structure for cylindrical battery and cylindrical battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832824U (en) |
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2023
- 2023-03-28 CN CN202320651600.9U patent/CN219832824U/en active Active
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