CN219553705U - Aluminum shell anti-corrosion structure and lithium battery - Google Patents
Aluminum shell anti-corrosion structure and lithium battery Download PDFInfo
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- CN219553705U CN219553705U CN202320248166.XU CN202320248166U CN219553705U CN 219553705 U CN219553705 U CN 219553705U CN 202320248166 U CN202320248166 U CN 202320248166U CN 219553705 U CN219553705 U CN 219553705U
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- support plate
- protective film
- bottom support
- aluminum shell
- battery cell
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- 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
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides an aluminum shell anti-corrosion structure and a lithium battery, wherein the aluminum shell anti-corrosion structure comprises a battery cell, a protective film, a bottom support plate and an adhesive part; the protective film covers the periphery of the battery cell; the bottom supporting plate is arranged at the bottom of the battery cell; the bonding part is suitable for bonding the bottom support plate and the protective film, and the bonding part is suitable for plugging the positioning hole of the bottom support plate. The locating holes of the bottom supporting plates are plugged, so that electrolyte is prevented from flowing out of the locating holes, lithium is prevented from being embedded in the surface of the aluminum shell due to the reaction of the aluminum shell and the anode, and corrosion of the aluminum shell is avoided.
Description
Technical Field
The utility model relates to the field of lithium batteries, in particular to an aluminum shell anti-corrosion structure and a lithium battery.
Background
In the production process of the lithium battery, a battery core protection film and a bottom supporting plate are required to be used between the shell and the bare battery core for protection. In the actual processing production process, the battery cell protective film and the bottom support plate need to be assembled in advance. In the assembly process, the electric core protection film and the bottom supporting plate are assembled together through fixing and hot melting through the positioning holes of the electric core protection film and the bottom supporting plate. However, the assembly by hot melting is not firm enough, and the bottom support plate and the battery cell protective film are required to be secondarily fixed through blue glue.
When the battery cell is damaged, the bare battery cell and the aluminum shell form a channel through the positioning hole, so that the aluminum shell is embedded with lithium, and the shell is corroded.
The above problems are currently in need of solution.
Disclosure of Invention
The utility model aims to provide an aluminum shell corrosion-resistant structure and a lithium battery so as to achieve the purpose of preventing corrosion of an aluminum shell.
In order to solve the technical problems, the utility model provides an aluminum shell anti-corrosion structure, which comprises:
the battery cell, the protective film, the bottom support plate and the bonding part;
the protective film covers the periphery of the battery cell;
the bottom support plate is arranged at the bottom of the battery cell.
Further, the bonding portion is adapted to bond the bottom plate and the protective film, and the bonding portion is adapted to seal the positioning hole of the bottom plate.
Further, a gap is arranged between the bottom supporting plate and the protective film.
Further, the battery cell is formed by splicing at least two conductive blocks.
Further, the positioning holes are arranged on two sides of the bottom supporting plate;
the bonding part is bonded on the bottom of the bottom support plate and the short side wall of the protective film and is suitable for plugging the positioning hole of the bottom support plate.
Further, the positioning hole is arranged in the middle of the bottom supporting plate;
the bonding part is bonded on the bottom of the bottom support plate and the long side wall of the protective film and is suitable for plugging the positioning hole of the bottom support plate.
Further, the number of the positioning holes is a plurality of;
the positioning holes are arranged on two sides of the bottom support plate and/or in the middle of the bottom;
the bonding part is bonded on the bottom of the bottom support plate and the short side wall of the protective film and is suitable for plugging the positioning holes on two sides of the bottom support plate;
the bonding part is also bonded on the bottom of the bottom support plate and two long side walls of the protective film, and is suitable for plugging the positioning hole positioned in the middle of the bottom support plate.
Further, the number of the bonding portions is at least one.
Further, the bonding part is formed by blue gel fixation.
Further, the protective film is rectangular.
The utility model also provides a lithium battery, which comprises an aluminum shell and the aluminum shell corrosion prevention structure;
the aluminum shell anti-corrosion structure is arranged on the aluminum shell.
The utility model has the beneficial effects that the utility model provides an aluminum shell anti-corrosion structure and a lithium battery, wherein the aluminum shell anti-corrosion structure comprises a battery cell, a protective film, a bottom support plate and an adhesive part; the protective film covers the periphery of the battery cell; the bottom supporting plate is arranged at the bottom of the battery cell; the bonding part is suitable for bonding the bottom support plate and the protective film, and the bonding part is suitable for plugging the positioning hole of the bottom support plate. The locating holes of the bottom supporting plates are plugged, so that electrolyte is prevented from flowing out of the locating holes, lithium is prevented from being embedded in the surface of the aluminum shell due to the reaction of the aluminum shell and the anode, and corrosion of the aluminum shell is avoided.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of an aluminum hull corrosion protection structure according to the present embodiment.
Fig. 2 is a schematic diagram of the structure of another view of fig. 1.
Fig. 3 is a schematic structural diagram of another corrosion protection structure for aluminum cases according to the present embodiment.
Fig. 4 is a schematic structural view of another view of fig. 3.
In the figure: 100. a battery cell; 200. a protective film; 300. a bottom support plate; 310. positioning holes; 400. and an adhesive part.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
Example 1
Referring to fig. 1-2, the present embodiment provides an aluminum hull anti-corrosion structure, which includes: the battery cell 100, the protective film 200, the bottom plate 300, and the adhesive part 400; the protective film 200 covers the periphery of the battery cell 100; the bottom plate 300 is disposed at the bottom of the battery cell 100; the adhesive part 400 is adapted to adhere the bottom plate 300 to the protective film 200, and the adhesive part 400 is adapted to seal the positioning hole 310 of the bottom plate 300. By plugging the positioning holes 310 of the bottom support plate 300, the electrolyte is prevented from flowing out of the positioning holes 310, lithium is prevented from being embedded on the surface of the aluminum shell due to the reaction between the aluminum shell and the anode, and therefore corrosion of the aluminum shell is avoided.
In this embodiment, a gap is provided between the bottom plate 300 and the protective film 200. Electrolyte permeates from the gap between the bottom support plate 300 and the protective film 200, so that the conduction distance between the battery cell 100 and the aluminum shell is increased, and lithium intercalation on the surface of the aluminum shell caused by the positive reaction of the aluminum shell and the battery cell 100 is avoided, and further corrosion of the aluminum shell is avoided.
In this embodiment, the electrical core 100 is formed by splicing at least two conductive blocks.
In this embodiment, the positioning holes 310 are provided at both sides of the bottom plate 300; the bonding part 400 is bonded to the bottom of the bottom plate 300 and the short sidewall of the protective film 200, and is adapted to seal the positioning hole 310 of the bottom plate 300.
Wherein the number of the bonding parts 400 is at least one. The bonding portion 400 is formed by blue gel-curing. When the length and the width of the blue glue are increased and the bottom support plate 300 and the protective film 200 of the battery cell 100 are secondarily fixed by using the blue glue, the positioning holes 310 are plugged by using the blue glue, so that the lithium intercalation corrosion of the aluminum shell caused by the positioning holes 310 is prevented when the bare battery cell 100 is damaged.
In this embodiment, the protective film 200 has a rectangular parallelepiped shape. In other embodiments, the protective film 200 may be cylindrical, a landing, etc.
Example 2
Referring to fig. 3 to 4, the present embodiment provides an aluminum case corrosion prevention structure similar to that of embodiment 1, except that the setting positions of the positioning holes 310 and the bonding positions of the bonding portions 400 are different from those of embodiment 1.
In this embodiment, the positioning hole 310 is disposed in the middle of the bottom plate 300; the bonding part 400 is bonded to the bottom of the bottom plate 300 and the long side wall of the protective film 200, and is adapted to seal the positioning hole 310 of the bottom plate 300. By plugging the positioning holes 310 of the bottom support plate 300, the electrolyte is prevented from flowing out of the positioning holes 310, lithium is prevented from being embedded on the surface of the aluminum shell due to the reaction between the aluminum shell and the anode, and therefore corrosion of the aluminum shell is avoided.
Example 3
This embodiment provides an aluminum case corrosion prevention structure identical to that of embodiment 1, except that the installation position of the positioning hole 310 and the bonding position of the bonding portion 400 are different from those of embodiment 1.
In this embodiment, the number of the positioning holes 310 is a plurality; a plurality of the positioning holes 310 are provided at both sides of the bottom plate 300 and/or at the middle of the bottom; the bonding part 400 is bonded to the bottom of the bottom plate 300 and the short sidewall of the protective film 200, and is adapted to seal the positioning holes 310 located at both sides of the bottom plate 300; the bonding part 400 is further bonded to the bottom of the bottom plate 300 and both long sidewalls of the protective film 200, and is adapted to seal the positioning hole 310 located at the middle of the bottom plate 300. By plugging the positioning holes 310 of the bottom support plate 300, the electrolyte is prevented from flowing out of the positioning holes 310, lithium is prevented from being embedded on the surface of the aluminum shell due to the reaction between the aluminum shell and the anode, and therefore corrosion of the aluminum shell is avoided.
Example 4
The embodiment provides a lithium battery, which comprises an aluminum shell and the aluminum shell corrosion prevention structure provided by the embodiment; the aluminum shell anti-corrosion structure is arranged on the aluminum shell.
In summary, the present utility model provides an aluminum-shell anti-corrosion structure and a lithium battery, wherein the aluminum-shell anti-corrosion structure comprises a battery cell 100, a protective film 200, a bottom support plate 300 and an adhesive part 400; the protective film 200 covers the periphery of the battery cell 100; the bottom plate 300 is disposed at the bottom of the battery cell 100; the adhesive part 400 is adapted to adhere the bottom plate 300 to the protective film 200, and the adhesive part 400 is adapted to seal the positioning hole 310 of the bottom plate 300. By plugging the positioning holes 310 of the bottom support plate 300, the electrolyte is prevented from flowing out of the positioning holes 310, lithium is prevented from being embedded on the surface of the aluminum shell due to the reaction between the aluminum shell and the anode, and therefore corrosion of the aluminum shell is avoided.
The components (components not illustrating the specific structure) selected in the present utility model are common standard components or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through routine experimental methods. Moreover, the software program related to the utility model is the prior art, and the utility model does not relate to any improvement on the software program.
In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided by the present utility model, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. An aluminum hull corrosion protection structure, comprising:
the battery cell, the protective film, the bottom support plate and the bonding part;
the protective film covers the periphery of the battery cell;
the bottom supporting plate is arranged at the bottom of the battery cell;
the bonding part is suitable for bonding the bottom support plate and the protective film, and the bonding part is suitable for plugging the positioning hole of the bottom support plate.
2. The aluminum hull corrosion resistant structure according to claim 1, wherein,
a gap is arranged between the bottom supporting plate and the protective film.
3. The aluminum hull corrosion resistant structure according to claim 1, wherein,
the battery cell is formed by splicing at least two conductive blocks.
4. The aluminum hull corrosion resistant structure according to claim 1, wherein,
the positioning holes are arranged on two sides of the bottom supporting plate;
the bonding part is bonded on the bottom of the bottom support plate and the short side wall of the protective film and is suitable for plugging the positioning hole of the bottom support plate.
5. The aluminum hull corrosion resistant structure according to claim 1, wherein,
the positioning hole is arranged in the middle of the bottom supporting plate;
the bonding part is bonded on the bottom of the bottom support plate and the long side wall of the protective film and is suitable for plugging the positioning hole of the bottom support plate.
6. The aluminum hull corrosion resistant structure according to claim 1, wherein,
the number of the positioning holes is multiple;
the positioning holes are arranged on two sides of the bottom support plate and/or in the middle of the bottom;
the bonding part is bonded on the bottom of the bottom support plate and the short side wall of the protective film and is suitable for plugging the positioning holes on two sides of the bottom support plate;
the bonding part is also bonded on the bottom of the bottom support plate and two long side walls of the protective film, and is suitable for plugging the positioning hole positioned in the middle of the bottom support plate.
7. The aluminum hull corrosion resistant structure according to claim 1, wherein,
the number of the bonding parts is at least one.
8. The aluminum hull corrosion resistant structure according to claim 1, wherein,
the bonding part is formed by blue gel fixation.
9. The aluminum hull corrosion resistant structure according to claim 1, wherein,
the protective film is cuboid.
10. A lithium battery comprising an aluminum casing and an aluminum casing corrosion protection structure according to any one of claims 1-9;
the aluminum shell anti-corrosion structure is arranged on the aluminum shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320248166.XU CN219553705U (en) | 2023-02-19 | 2023-02-19 | Aluminum shell anti-corrosion structure and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320248166.XU CN219553705U (en) | 2023-02-19 | 2023-02-19 | Aluminum shell anti-corrosion structure and lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219553705U true CN219553705U (en) | 2023-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320248166.XU Active CN219553705U (en) | 2023-02-19 | 2023-02-19 | Aluminum shell anti-corrosion structure and lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219553705U (en) |
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2023
- 2023-02-19 CN CN202320248166.XU patent/CN219553705U/en active Active
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