CN219677379U - Split aluminum shell and lithium battery - Google Patents
Split aluminum shell and lithium battery Download PDFInfo
- Publication number
- CN219677379U CN219677379U CN202320988593.1U CN202320988593U CN219677379U CN 219677379 U CN219677379 U CN 219677379U CN 202320988593 U CN202320988593 U CN 202320988593U CN 219677379 U CN219677379 U CN 219677379U
- Authority
- CN
- China
- Prior art keywords
- shell
- base
- housing
- split
- split aluminum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 58
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 210000004027 cell Anatomy 0.000 description 22
- 238000004146 energy storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000000352 storage cell Anatomy 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
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- Secondary Cells (AREA)
Abstract
The utility model provides a split aluminum shell and a lithium battery, wherein the split aluminum shell comprises: a housing and a base; openings are formed in the upper portion and the lower portion of the shell; the base is fixedly arranged below the shell. Through the manufacturing process that changes the aluminum hull, ensure the possibility that electric core widens at width direction, through carrying out the welding to the aluminum hull, avoid appearing electric core and make the condition of back weeping, simultaneously, when preparing split type aluminum hull, the cost of preparation of aluminum hull can not increase, and split type aluminum hull can guarantee under the great circumstances of volume that electric core normally goes into the shell, can not cause the influence to electric core performance simultaneously.
Description
Technical Field
The utility model relates to the field of lithium batteries, in particular to a split aluminum shell and a lithium battery.
Background
With the increasing popularity of energy storage markets, energy storage cell products are evolving towards large capacities. The use of the high-capacity battery cell can reduce the use amount of PACK end parts and improve the volume energy density; the high-capacity battery cells can realize high capacity by using fewer battery cells, the parallel connection number is reduced, the BMS difficulty is reduced, the integrated assembly process of the energy storage system is simplified by the application of the high-capacity battery cells, and the investment of land capital construction, containers and other costs can be greatly saved, so that the cost is further reduced.
In order to increase the energy density, some friends choose aluminum cases with two open sides, namely, one cell consists of two top covers and one aluminum case, one bare cell and some die-cut pieces. But this increases the cost and space of the structure and is detrimental to the improvement of the energy density of the cells.
The current aluminum shell forming process of the square battery core is stretch forming, and the limitation of the battery core in the width direction and the thickness direction is caused by the defect of the process, so that the battery core is limited to be infinitely wide and thick.
The above problems are currently in need of solution.
Disclosure of Invention
The utility model aims to provide a split type shell and a lithium battery, so that the use requirement of a battery cell with any width and thickness direction size can be met.
In order to solve the technical problems, the utility model provides a split aluminum shell, which comprises:
a housing and a base;
openings are formed in the upper portion and the lower portion of the shell;
the base is fixedly arranged below the shell.
Further, the base is fixed with the housing by welding, and the base is adapted to seal an opening of a lower portion of the housing.
Further, the welding positions of the base and the shell are staggered from the positions of the positive plate and the negative plate of the external core pack.
Further, the welding position of the base and the shell is lower than the positions of the positive plate and the negative plate of the external core pack.
Further, the housing is made by an extrusion or welding process.
Further, the base is manufactured through a stamping process.
The utility model also provides a lithium battery, comprising: the top cover, the battery cell and the split aluminum shell are as described above;
the battery cell is arranged in the split aluminum shell;
the top cover covers the upper part of the split aluminum shell.
Further, the battery cell is formed by a plurality of core packages along the width direction and/or the thickness direction of the core packages in an array manner.
Further, the core package is made of a separator, a positive plate and a negative plate which are wound or laminated.
Further, the top cover is provided with a plurality of polar posts, at least one liquid injection hole and at least one explosion-proof valve
The utility model has the beneficial effects that the utility model provides a split aluminum shell and a lithium battery, wherein the split aluminum shell comprises: a housing and a base; openings are formed in the upper portion and the lower portion of the shell; the base is fixedly arranged below the shell. Through the manufacturing process that changes the aluminum hull, ensure the possibility that electric core widens at width direction, through carrying out the welding to the aluminum hull, avoid appearing electric core and make the condition of back weeping, simultaneously, when preparing split type aluminum hull, the cost of preparation of aluminum hull can not increase, and split type aluminum hull can guarantee under the great circumstances of volume that electric core normally goes into the shell, can not cause the influence to electric core performance simultaneously.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a split aluminum case according to an embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a split aluminum case provided by an embodiment of the utility model after being mounted into a battery cell.
Fig. 3 is an exploded view of a lithium battery provided in an embodiment of the present utility model.
In the figure: 100. a split aluminum shell; 110. a housing; 120. a base; 130. a bottom support plate; 140. a welding position; 200. a top cover; 210. a pole; 220. a liquid injection hole; 230. an explosion-proof valve; 300. and a battery cell.
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.
Embodiment 1 referring to fig. 1 and 3, the present embodiment provides a split aluminum case 100, which is characterized by comprising: a housing 110 and a base 120; the housing 110 is provided with openings at the upper and lower sides; the base 120 is fixedly disposed under the housing 110. Through changing the manufacturing process of aluminum hull, ensure the possibility that electric core 300 widens in width direction, through carrying out the welding to the aluminum hull, avoid appearing electric core 300 and make the condition of back weeping, simultaneously, when split type aluminum hull 100 prepares, the cost of preparation of aluminum hull can not increase, and split type aluminum hull 100 can guarantee under the great circumstances of volume that electric core 300 normally goes into the shell, can not cause the influence to electric core 300 performance simultaneously.
In this embodiment, the base 120 is fixed to the housing 110 by welding, and the base 120 is adapted to seal an opening of a lower portion of the housing 110. Avoiding the situation of liquid leakage after the battery cell 300 is manufactured.
In this embodiment, the welding position 140 between the base 120 and the housing 110 is offset from the positions of the positive and negative electrode sheets of the external core pack.
Specifically, the welding position 140 between the base 120 and the housing 110 is lower than the positions of the positive and negative electrode sheets of the external core pack, and the lowest point positions of the positive and negative electrode sheets are shown as F3 in fig. 3. Thereby ensuring that the welding protrusions existing after the welding of the case 110 and the base 120 do not interfere with the positions of the positive and negative electrode sheets.
In this embodiment, the housing 110 is made by an extrusion or welding process.
In this embodiment, the base 120 is manufactured by a stamping process.
In this embodiment, a bottom plate 130 is disposed below the base 120.
Embodiment 2 referring to fig. 2-3, the present embodiment provides a lithium battery, including: top cap 200, cell 300, and split aluminum case 100 as provided in the examples; the battery cell 300 is arranged in the split aluminum shell 100; the top cover 200 covers the split aluminum case 100. Through changing the manufacturing process of aluminum hull, ensure the possibility that electric core 300 widens in width direction, through carrying out the welding to the aluminum hull, avoid appearing electric core 300 and make the condition of back weeping, simultaneously, when split type aluminum hull 100 prepares, the cost of preparation of aluminum hull can not increase, and split type aluminum hull 100 can guarantee under the great circumstances of volume that electric core 300 normally goes into the shell, can not cause the influence to electric core 300 performance simultaneously.
In this embodiment, the battery cell 300 is formed by a plurality of core packages arrayed along the width and/or thickness direction of the core package. Specifically, the width of the core package is A bare cells 300, and the thickness direction of the core package is B bare cells 300, wherein A is more than or equal to 1, preferably 2, and B is more than or equal to 1, preferably 2. The single core package is provided with a body part, a positive electrode tab and a negative electrode tab, wherein the projection positions of the positive electrode tab and the negative electrode tab in the width direction of the core package are consistent, and the positive electrode tab and the negative electrode tab in the thickness direction of the core package are arranged in a staggered manner, namely, the positive electrode tab, the negative electrode tab, the positive electrode tab and the positive electrode tab. The arrangement mode of the positive and negative electrode posts 210 is consistent with the arrangement mode of the positive and negative electrode lugs, and different core packages are connected with the positive and negative electrode connecting sheets in the width and thickness directions of the core packages in a welding mode, so that the battery cell 300 can be continuously arranged in a wireless mode in the width and thickness directions of the core packages without limitation. Meanwhile, the battery cell 300 is provided with a plurality of plastic nails and a plurality of aluminum sealing sheets.
Wherein, the width direction of the core pack is shown as F1 in FIG. 2, and the thickness direction of the core pack is shown as F2 in FIG. 2.
In this embodiment, the core pack is made of separator, positive electrode sheet, negative electrode sheet wound or laminated.
In this embodiment, the top cover 200 is provided with a plurality of poles 210, at least one injection hole 220, and at least one explosion-proof valve 230.
Specifically, the top cover 200 includes n positive electrode posts 210 and m negative electrode posts 210, and includes x liquid injection holes 220 and y explosion-proof valves 230, where n, m, x, y are greater than or equal to 1, n=m-1 (or m=n-1), xy can be changed as required, and the liquid injection holes 220 and the explosion-proof valves 230 are distributed at the middle positions of the positive electrode posts 210, so that the liquid injection and the pressure relief of the battery cell 300 are facilitated.
In summary, the present utility model provides a split aluminum case and a lithium battery, wherein the split aluminum case includes: a housing 110 and a base 120; the housing 110 is provided with openings at the upper and lower sides; the base 120 is fixedly disposed under the housing 110. Through changing the manufacturing process of aluminum hull, ensure the possibility that electric core 300 widens in width direction, through carrying out the welding to the aluminum hull, avoid appearing electric core 300 and make the condition of back weeping, simultaneously, when split type aluminum hull 100 prepares, the cost of preparation of aluminum hull can not increase, and split type aluminum hull 100 can guarantee under the great circumstances of volume that electric core 300 normally goes into the shell, can not cause the influence to electric core 300 performance simultaneously.
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.
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. A split aluminum hull, comprising:
a housing and a base;
openings are formed in the upper portion and the lower portion of the shell;
the base is fixedly arranged below the shell.
2. The split aluminum housing of claim 1 wherein,
the base is fixed with the housing by welding, and the base is adapted to seal an opening of a lower portion of the housing.
3. The split aluminum housing of claim 1 wherein,
the welding positions of the base and the shell are staggered with the positions of the positive plate and the negative plate of the external core pack.
4. The split aluminum housing of claim 3 wherein,
the welding position of the base and the shell is lower than the positions of the positive plate and the negative plate of the external core pack.
5. The split aluminum housing of claim 1 wherein,
the housing is made by an extrusion or welding process.
6. The split aluminum housing of claim 1 wherein,
the base is manufactured through a stamping process.
7. A lithium battery, comprising: a top cap, a cell, and a split aluminum housing as defined in any one of claims 1-6;
the battery cell is arranged in the split aluminum shell;
the top cover covers the upper part of the split aluminum shell.
8. The lithium battery of claim 7, wherein the cell is comprised of a plurality of cell packs arrayed along a width of the cell pack and/or a thickness of the cell pack.
9. The lithium battery of claim 8, wherein the battery is configured to provide the battery with a battery power,
the core bag is made of a diaphragm, a positive plate and a negative plate in a winding or lamination mode.
10. The lithium battery of claim 7, wherein the top cover is provided with a plurality of poles, at least one liquid injection hole and at least one explosion-proof valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320988593.1U CN219677379U (en) | 2023-04-27 | 2023-04-27 | Split aluminum shell and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320988593.1U CN219677379U (en) | 2023-04-27 | 2023-04-27 | Split aluminum shell and lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219677379U true CN219677379U (en) | 2023-09-12 |
Family
ID=87920465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320988593.1U Active CN219677379U (en) | 2023-04-27 | 2023-04-27 | Split aluminum shell and lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219677379U (en) |
-
2023
- 2023-04-27 CN CN202320988593.1U patent/CN219677379U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |