Battery pole roll packaging unit

Abstract

A battery pole roll packaging unit comprises a protective supporting shell, a pole roll set arranged in the protective supporting shell and a vacuumized aluminum foil bag arranged outside the protective supporting shell in a sleeving mode, and the pole roll set comprises a reel and an electrode roll material arranged on the reel in a wound mode. The protective supporting shell comprises two end covers and a supporting cylinder, wherein the two end covers are installed at the two ends of the reel in a relatively stable mode, the supporting cylinder is embedded between the outer edges of the two end covers, and a protective gap exists between the supporting cylinder and the electrode coiled material. A protection gap is formed between the supporting barrel and the electrode coiled material, the supporting barrel cannot make contact with the electrode coiled material, and it is guaranteed that the electrode coiled material cannot be squeezed and make contact in the transportation process.

Description

Technical Field

[0001] This utility model relates to a battery electrode roll packaging unit. Background Technology

[0002] With the global development and popularization of electric vehicles, the manufacturing of batteries often involves cross-border transportation of raw materials. As an important component of battery cells, the quality and performance of battery electrode rolls directly affect indicators such as battery energy density, charge and discharge rate, and cycle life.

[0003] Battery electrode rolls are only 100~300μm thick and are very fragile. They are easily damaged by stress. Therefore, they cannot be directly subjected to pressure, pulling, or abrasion during transportation and handling, otherwise they will be easily damaged. In addition, battery electrode rolls are very susceptible to oxidation, crystallization and other reactions caused by improper temperature and humidity during transportation and storage, which will affect the utilization rate of the product.

[0004] Therefore, there is a market demand for a battery electrode roll packaging unit that can prevent oxidation, crystallization, and other reactions during transportation, and effectively prevent the battery electrode roll from being scratched or bumped during handling and packaging. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a battery electrode roll packaging unit.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a battery electrode roll packaging unit, including a protective support shell, an electrode roll assembly disposed within the protective support shell, and a vacuum-sealed aluminum foil bag fitted outside the protective support shell. The electrode roll assembly includes a spool and an electrode roll material wound on the spool. The protective support shell includes two end caps that are relatively stably installed at both ends of the spool and a support cylinder nested between the outer edges of the two end caps. There is a protective gap between the support cylinder and the electrode roll material.

[0007] In some embodiments, each end cap includes an end cap ring body and one or more inner supports that project axially inward from the edge of the end cap ring body along the circumferential direction, with the two ends of the support cylinder sleeved on the corresponding inner supports.

[0008] In some embodiments, each end cap further includes one or more outer limiting protrusions that project radially outward from the edge of the end cap ring body, with the two end faces of the support cylinder abutting between the outer limiting protrusions on both sides.

[0009] In some embodiments, the protective support shell further includes two inner lining discs respectively fitted onto both ends of the reel, each inner lining disc being embedded inside the inner support of the end cap.

[0010] In some embodiments, each of the inner liner trays has at least one storage hole for holding desiccant.

[0011] In some embodiments, each end cap further includes a sleeve that protrudes axially outward from the inner edge of the end cap ring body along the circumferential direction, and a cap disposed at the outer end of the sleeve and abutting against the end of the reel.

[0012] In some embodiments, the cap is a hollow annular cap, and each end cap has a radially extending radial groove that communicates with the hollow part of the cap, which allows the end cap to be easily placed and removed from the spool.

[0013] In some embodiments, the support cylinder has a through slot along its length.

[0014] In some embodiments, the support cylinder is a bent hollow plate wound between the two end caps.

[0015] The scope of this utility model is not limited to technical solutions formed by specific combinations of the above-mentioned technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-mentioned technical features or their equivalent features. For example, technical solutions formed by substituting the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model provides a battery electrode roll packaging unit, which has the following advantages:

[0017] 1. The electrode roll is wound on a spool, with end caps at both ends of the spool and a support cylinder fitted between the two end caps. This creates a protective gap between the support cylinder and the electrode roll, preventing the support cylinder from contacting the electrode roll and ensuring that the electrode roll is not squeezed or touched during transportation.

[0018] 2. The protective support shell gives the electrode roll a certain degree of resistance to external impacts;

[0019] 3. After winding the electrode roll onto the spool and setting a protective support shell around the roll, place it together in an aluminum foil bag and vacuum heat seal it to form a sealed vacuum environment. This eliminates air and humidity, preventing the electrode roll from coming into direct contact with external gases and thus avoiding reactions such as oxidation and crystallization, ensuring the stable quality of the roll. Attached Figure Description

[0020] Figure 1 Schematic diagram of an exploded battery electrode roll packaging unit (Example 1);

[0021] Figure 2This is a three-dimensional cross-sectional view of the battery electrode roll packaging unit (Example 1);

[0022] Figure 3 This is a cross-sectional schematic diagram of a battery electrode roll packaging unit (Example 1).

[0023] Figure 4 This is a schematic diagram of the support cylinder structure (Example 1);

[0024] Figure 5 This is a schematic diagram of the end cap structure (Example 2);

[0025] The components include: 1. Reel; 2. Electrode roll; 3. Protective support shell; 31. End cap; 311. End cap ring body; 312. Inner support; 313. Outer limiting protrusion; 314. Sleeve; 315. Cap; 32. Support cylinder; 33. Inner liner plate; 4. Aluminum foil bag. Detailed Implementation

[0026] Example 1: As shown in the attached document Figure 1-4 The battery electrode roll packaging unit shown includes a protective support shell 3, an electrode roll assembly disposed inside the protective support shell 3, and a vacuum-sealed aluminum foil bag 4 sleeved outside the protective support shell 3.

[0027] The electrode roll assembly includes a spool 1 and an electrode roll 2 wound on the spool 1.

[0028] like Figure 1-3 As shown, the protective support shell 3 includes two end caps 31 installed at both ends of the roll 1 and a support cylinder 32 nested between the outer edges of the two end caps 31. There is a protective gap between the support cylinder 32 and the electrode roll 2. The protective gap prevents the support cylinder 32 from touching the electrode roll 2, ensuring that the electrode roll is not squeezed or touched during transportation.

[0029] Detailed assembly structure: Each end cap 31 includes an end cap ring body 311, an inner support 312 protruding axially inward from the edge of the end cap ring body 311 along the circumferential direction, and an outer limiting protrusion 313 protruding radially outward from the edge of the end cap ring body 311. The support cylinder 32 is fitted onto the corresponding inner support 312 at both ends, with the two end faces of the support cylinder 32 abutting between the outer limiting protrusions 313 on both sides. Thus, the support cylinder 32 is positioned and nested between the outer edges of the two end caps 31. Figure 4 The support cylinder 32 has a through slot along its length, which helps the support cylinder 32 to be matched with end caps 31 of various diameters.

[0030] Each end cap 31 also includes a sleeve 314 that protrudes axially outward from the inner edge of the end cap ring body 311 along the circumferential direction, and a cap 315 disposed at the outer end of the sleeve 314 and abutting against the end of the spool 1. Each end cap 31 is fitted onto the end of the corresponding side spool 1, and the end cap 31 is axially positioned relative to the spool 1.

[0031] The cap 315 is a hollow annular cap 315, and each end cap 31 has a radially extending radial groove that connects to the hollow cap 315. This allows the cap 315 to have the ability to undergo slight elastic deformation in the circumferential direction, thereby enabling the end cap 31 to adapt to various diameters of the spool 1 and to be securely mounted on the spool 1.

[0032] The protective support shell 3 also includes two inner lining discs 33 respectively located at both ends of the roll 1. Each inner lining disc 33 is located between the corresponding end cap 31 and the roll 2, and is embedded in the inner support 312 for positioning, so as to provide stable support for the end cap 31, so that it has sufficient support strength and prevents it from being squeezed and deformed.

[0033] The electrode roll 2 is wound layer by layer onto the roll 1 and then secured with tape at the ends to prevent it from unraveling.

[0034] During assembly, an inner liner 33 is installed inside each end cap 31, and a desiccant is placed in the storage hole of the inner liner 33. After the electrode roll assembly is installed, one end cap 31 is first fitted onto one end of the roll 1, then a support cylinder 32 is fitted onto the roll 2 and nested with the end cap 31. The other end cap 31 is then fitted onto the other end of the roll and nested into the other end of the support cylinder 32. Finally, an aluminum foil bag 4 is fitted and vacuum-sealed. The outermost end caps 31 and support cylinders 32 of the electrode roll assembly can be made of plastic or metal, providing rigid support and effectively protecting the internal electrode roll, preventing compression and impact caused by vacuum space compression.

[0035] Example 2: As shown in the attached document Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the structure of the end cap 31 is different. In this embodiment, the structure of the end cap 31 is simpler. The center of the end cap ring body 311 of the end cap 31 is only a circular through hole, and the end cap 31 is made of honeycomb plate.

[0036] In this embodiment, the inner support 312 is in the shape of a wide-sided ring, which gives it a certain rigidity and enables it to withstand the pressure of the support cylinder 32. Of course, in order to make the end cap 31 support stronger and less prone to deformation, an inner liner can be provided on the inner side of the inner support 312 in the shape of a wide-sided ring.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A battery electrode roll packaging unit, characterized in that: The device includes a protective support shell (3), an electrode roll assembly disposed within the protective support shell (3), and a vacuum-sealed aluminum foil bag (4) fitted outside the protective support shell (3). The electrode roll assembly includes a spool (1) and an electrode roll (2) wound on the spool (1). The protective support shell (3) includes two end caps (31) installed at both ends of the spool (1) in relatively stable positions, and a support cylinder (32) nested between the outer edges of the two end caps (31). There is a protective gap between the support cylinder (32) and the electrode roll (2).

2. The battery electrode roll packaging unit according to claim 1, characterized in that: Each end cap (31) includes an end cap ring body (311) and one or more inner supports (312) protruding axially inward from the edge of the end cap ring body (311) along the circumferential direction, with the two ends of the support cylinder (32) sleeved on the corresponding inner support (312).

3. The battery electrode roll packaging unit according to claim 2, characterized in that: Each of the end caps (31) also includes one or more outer limiting protrusions (313) that protrude radially outward from the edge of the end cap ring body (311), and the two end faces of the support cylinder (32) abut between the outer limiting protrusions (313) on both sides.

4. The battery electrode roll packaging unit according to claim 2, characterized in that: The protective support shell (3) also includes two inner lining discs (33) respectively fitted onto both ends of the scroll (1), each inner lining disc (33) being embedded inside the inner support (312) of the end cap (31).

5. The battery electrode roll packaging unit according to claim 4, characterized in that: Each of the inner liner trays (33) has at least one storage hole for placing desiccant.

6. The battery electrode roll packaging unit according to claim 2, characterized in that: Each of the end caps (31) further includes a sleeve (314) that protrudes axially outward from the inner edge of the end cap ring body (311) along the circumferential direction, and a cap (315) disposed at the outer end of the sleeve (314) and abutting against the end of the spool (1).

7. The battery electrode roll packaging unit according to claim 6, characterized in that: The cap (315) is a hollow ring-shaped cap (315), and each end cap (31) has a radially extending and communicating radial groove that connects to the hollow cap (315), which makes it easy to place the end cap (31) on the scroll (1).

8. The battery electrode roll packaging unit according to claim 1, characterized in that: The support cylinder (32) has a through slot along its length.

9. The battery electrode roll packaging unit according to claim 1, characterized in that: The support tube (32) is made by winding a bent hollow plate between the two end caps (31).

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