CN220753577U - D-shaped soft-package lithium battery - Google Patents
D-shaped soft-package lithium battery Download PDFInfo
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- CN220753577U CN220753577U CN202322245137.0U CN202322245137U CN220753577U CN 220753577 U CN220753577 U CN 220753577U CN 202322245137 U CN202322245137 U CN 202322245137U CN 220753577 U CN220753577 U CN 220753577U
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- shaped
- edge
- negative electrode
- positive electrode
- lithium battery
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 239000002985 plastic film Substances 0.000 claims abstract description 15
- 229920006255 plastic film Polymers 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000003475 lamination Methods 0.000 claims abstract description 8
- 238000009966 trimming Methods 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims 2
- 239000012528 membrane Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model relates to the technical field of batteries and discloses a D-shaped soft-package lithium battery which comprises a D-shaped stacked core, an aluminum plastic film and a diaphragm bag, wherein the D-shaped stacked core comprises a positive electrode plate and a negative electrode plate which are arranged in a stacked mode in a layer-by-layer lamination mode, the diaphragm bag is coated on the outer surface of the positive electrode plate or the negative electrode plate, a first sealing edge is formed on the outer side of the edge of the positive electrode plate or the negative electrode plate, and the aluminum plastic film is coated on the outer surface of the D-shaped stacked core. The D-shaped soft package lithium battery is placed in an electronic product, and can fully utilize the internal space of the electronic product, so that the effect of exerting the maximum capacity in a narrow space is achieved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a D-shaped soft-package lithium battery.
Background
The battery is a device which is filled with electrolyte solution and metal electrodes to generate partial space of a cup, a groove or other containers or a composite container of current, can convert chemical energy into electric energy, has a positive electrode and a negative electrode, can obtain stable voltage, stable current and current which are stably supplied for a long time and are little influenced by the outside, has a simple structure, is convenient to carry, is easy to operate and is not influenced by the outside climate and temperature, has stable and reliable performance, and plays a great role in various aspects in the life of the modern society. The types of batteries are numerous, and there are alkaline zinc-manganese batteries, cadmium-nickel batteries, hydrogen-nickel batteries, lithium ion batteries, fuel cells, solar cells, and the like.
With the rapid development of mobile electronic products, in order to meet the power consumption requirements of products with different days and months, the electronic products provide various appearance requirements for assembled lithium batteries. Most of the conventional lithium batteries are square, cylindrical and the like, the shape is single, the space utilization rate of the product is low, and the conventional lithium batteries cannot be effectively used for circular mobile electronic products.
Disclosure of Invention
Accordingly, the present utility model is directed to a D-shaped soft package lithium battery, which is placed inside an electronic product, and can fully utilize the internal space of the electronic product to achieve the effect of maximum capacity in a small space.
The utility model solves the technical problems by the following technical means:
the utility model provides a D-shaped soft-package lithium battery, which comprises a D-shaped stacked core, an aluminum plastic film and a diaphragm bag, wherein the D-shaped stacked core comprises a positive electrode plate and a negative electrode plate which are arranged in a stacked mode in a layer-by-layer lamination mode, the diaphragm bag is coated on the outer surface of the positive electrode plate or the negative electrode plate, a first edge sealing is formed on the outer side of the edge of the positive electrode plate or the negative electrode plate, and the aluminum plastic film is coated on the outer surface of the D-shaped stacked core.
Further, the number of the positive electrode sheets is n+1, and the number of the negative electrode sheets is N.
Further, the positive electrode plate and the negative electrode plate are both D-shaped, the positive electrode lug is welded at the horizontal end extraction electrode of the positive electrode plate, and the negative electrode lug is welded at the horizontal end extraction electrode of the negative electrode plate.
Further, the edge of the separator pouch is outside the edges of the positive electrode sheet and the negative electrode sheet.
Further, a second sealing edge is formed on one side edge of the aluminum plastic film, a third sealing edge is formed on the other side edge of the aluminum plastic film, and a sealing edge overlapping area is formed on the outer side of the arc-shaped edge of the D-shaped laminated core.
Further, the length of the edge sealing overlapping area is 2-3mm.
Further, the aluminum-plastic film forms a D-shaped profiling trimming along the outer side edge of the D-shaped laminated core.
Further, the D-shaped profile cuts are folded along the edges of the D-shaped core stack to form cold folds.
The D-shaped soft package lithium battery has the following beneficial effects:
(1) The D-shaped soft-package lithium battery is D-shaped and is placed in a product, so that the internal space of the product can be fully utilized, and the effect of exerting the maximum capacity in a narrow space can be achieved.
(2) In the D-shaped soft-package lithium battery, the electrode plates are designed in a layer-by-layer lamination manner, and the positive electrode plates or the negative electrode plates are wrapped by a diaphragm bag, so that the D-shaped soft-package lithium battery has more stacked cores compared with the traditional Z-stacked manner, and can realize various irregularly-shaped lamination.
(3) In the D-shaped soft-package lithium battery, the positive electrode lug and the negative electrode lug are welded, so that the metal electrode lug and the foil are perfectly attached, and the risk of broken pieces after molding is reduced.
(4) In the D-shaped soft-package lithium battery, the designs of D-shaped profiling trimming, cold flanging, edge banding overlapping areas and the like are adopted, so that perfect curved surface cuts and better joint between edge banding and a battery cell main body after flanging are ensured, and no wrinkling phenomenon exists.
Drawings
Fig. 1 is a schematic front view of a D-shaped soft pack lithium battery according to the present utility model;
fig. 2 is a schematic rear view of a D-shaped soft package lithium battery according to the present utility model;
fig. 3 is a schematic structural view of a negative electrode sheet;
fig. 4 is a schematic structural view of the positive electrode sheet;
FIG. 5 is a schematic view of a D-shaped core stack;
fig. 6 is a schematic structural diagram of a D-shaped soft pack lithium battery according to the present utility model;
the D-shaped laminated core 1, a positive electrode sheet 11, a negative electrode sheet 12, an aluminum plastic film 2, a diaphragm bag 3, a D-shaped profiling trimming 41, a cold flanging 42, a first sealing edge 4, a positive electrode lug 6, a negative electrode lug 7, a second sealing edge 8, a third sealing edge 9 and a sealing edge overlapping area 10.
Detailed Description
The following embodiments of the present utility model are described in terms of specific examples, and those skilled in the art will appreciate the advantages and capabilities of the present utility model from the disclosure herein. It should be noted that, the illustrations provided in the following embodiments are for illustration only, and are shown in schematic drawings, not physical drawings, and are not to be construed as limiting the utility model, and in order to better illustrate the embodiments of the utility model, certain components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is merely for convenience in describing the present utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration, and should not be construed as limiting the present utility model, and that the specific meanings used above may be understood by those of ordinary skill in the art according to circumstances.
Referring to fig. 1-6, the D-shaped soft package lithium battery of the present utility model includes a D-shaped stacked core 1, an aluminum plastic film 2 and a separator bag 3, wherein the D-shaped stacked core 1 includes positive electrode sheets 11 and negative electrode sheets 12 stacked in a stacked manner, the number of the positive electrode sheets 11 is n+1, and the number of the negative electrode sheets 12 is N, i.e. the number of the negative electrode sheets 12 is always one sheet less than the number of the positive electrode sheets 11.
The negative electrode sheets 12 are stacked one on top of the other as shown in fig. 3; the positive electrode sheet 11 is overlapped one by one, and the separator bag 3 is coated on the outer surface of the positive electrode sheet 11, as shown in fig. 4, and the separator bag 3 forms a first sealed edge 4 outside the edge of the positive electrode sheet 11. In addition, the separator bag 3 may be coated on the outer surface of the negative electrode sheet 12, and the separator bag 3 forms the first sealed edge 4 outside the edge of the negative electrode sheet 12. That is, the separator pouch 3 may be coated on the outer surface of the positive electrode sheet 11 or the outer surface of the negative electrode sheet 12. The edge of the separator pouch 3 is outside the edges of the positive electrode sheet 11 and the negative electrode sheet 12.
In the above technical scheme, the electrode sheet adopts a layer-by-layer lamination design, and the positive electrode sheet 11 or the negative electrode sheet 12 is wrapped by adopting the diaphragm bag 3 for bag making, so that the electrode sheet has more diversification of the laminated core compared with the traditional Z-lamination mode, and various irregularly-shaped lamination can be realized. The positive electrode sheet 11 or the negative electrode sheet 12 is coated by adopting a bag making mode of an isolating film, so that the internal space of the battery is effectively saved compared with that of a conventional battery.
The positive electrode sheet 11 and the negative electrode sheet 12 are D-shaped, and the positive electrode tab 6 is ultrasonically welded to the horizontal end extraction electrode of the positive electrode sheet 11, and the negative electrode tab 7 is ultrasonically welded to the horizontal end extraction electrode of the negative electrode sheet 12, as shown in fig. 5. The positive electrode lug 6 and the negative electrode lug 7 are welded, so that the metal electrode lug and the foil are perfectly attached, and the risk of breakage after forming is reduced.
The aluminum plastic film is coated on the outer surface of the D-shaped laminated core 1, a second sealing edge 8 is formed at one side edge of the aluminum plastic film 2, a third sealing edge 9 is formed at the other side edge of the aluminum plastic film, a sealing edge overlapping area 10 is formed at the outer side of the arc-shaped edge of the D-shaped laminated core 1, and the length of the sealing edge overlapping area 10 is 2-3mm.
As shown in fig. 1 and 2, the aluminum plastic film forms a D-shaped contoured trim 41 along the outside edge of the D-shaped core stack. The D-shaped profiled bead 4 is folded along the edge of the D-shaped core 1 to form a cold flange 42, and the D-shaped profiled bead 41 is folded only on the outside of the D-shaped core 1. The design of the D-shaped profiling trimming 41, the cold flanging 42, the edge sealing overlapping area 10 and the like is adopted, so that perfect curved surface cuts and better fit between the edge sealing and the battery cell main body after flanging are ensured, and no wrinkling phenomenon exists.
The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model. The technology, shape, and construction parts of the present utility model, which are not described in detail, are known in the art.
Claims (8)
1. A D-shaped soft package lithium battery is characterized in that: including D shape folded core, plastic-aluminum membrane and diaphragm bag, D shape folded core is including carrying out positive electrode sheet and the negative electrode sheet that the lamination set up with the mode of piling up, the diaphragm bag cladding is on the surface of positive electrode sheet or negative electrode sheet to form first banding in the marginal outside of positive electrode sheet or negative electrode sheet, the plastic-aluminum membrane cladding is at the surface of D shape folded core.
2. The D-shaped soft pack lithium battery according to claim 1, wherein: the number of the positive electrode plates is N+1, and the number of the negative electrode plates is N.
3. The D-shaped soft pack lithium battery according to claim 2, wherein: the positive electrode plate and the negative electrode plate are both D-shaped, the positive electrode lug is welded at the leading-out electrode at the horizontal end of the positive electrode plate, and the negative electrode lug is welded at the leading-out electrode at the horizontal end of the negative electrode plate.
4. A D-shaped soft pack lithium battery according to claim 3, wherein: the edge of the diaphragm bag is arranged outside the edges of the positive electrode sheet and the negative electrode sheet.
5. The D-shaped soft pack lithium battery according to claim 4, wherein: the edge of one side of the aluminum-plastic film forms a second sealing edge, the edge of the other side forms a third sealing edge, and a sealing edge overlapping area is formed outside the arc-shaped edge of the D-shaped laminated core.
6. The D-shaped soft pack lithium battery according to claim 5, wherein: the length of the edge sealing overlapping area is 2-3mm.
7. The D-shaped soft pack lithium battery according to claim 6, wherein: and the aluminum plastic film forms D-shaped profiling trimming along the outer side edge of the D-shaped laminated core.
8. The D-shaped soft pack lithium battery according to claim 7, wherein: the D-shaped profiling cutting edge is folded along the edge of the D-shaped folded core to form a cold folded edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322245137.0U CN220753577U (en) | 2023-08-21 | 2023-08-21 | D-shaped soft-package lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322245137.0U CN220753577U (en) | 2023-08-21 | 2023-08-21 | D-shaped soft-package lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220753577U true CN220753577U (en) | 2024-04-09 |
Family
ID=90569308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322245137.0U Active CN220753577U (en) | 2023-08-21 | 2023-08-21 | D-shaped soft-package lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753577U (en) |
-
2023
- 2023-08-21 CN CN202322245137.0U patent/CN220753577U/en active Active
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| GR01 | Patent grant |