CN217035917U - Ultrathin flexible energy storage device with positive and negative electrode lugs on same surface - Google Patents
Ultrathin flexible energy storage device with positive and negative electrode lugs on same surface Download PDFInfo
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- CN217035917U CN217035917U CN202122902851.3U CN202122902851U CN217035917U CN 217035917 U CN217035917 U CN 217035917U CN 202122902851 U CN202122902851 U CN 202122902851U CN 217035917 U CN217035917 U CN 217035917U
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Abstract
The utility model discloses an ultrathin flexible energy storage device with a positive electrode lug and a negative electrode lug on the same surface, and relates to the field of flexible batteries. The technical scheme mainly comprises: a first base material layer; the positive electrode current collector is arranged on the inner surface of the first base material layer, and a positive lug protruding out of the side edge of the first base material layer is arranged on the positive electrode current collector; a second substrate layer; the negative electrode current collector is arranged on the inner surface of the second base material layer, and a negative electrode lug protruding out of the side edge of the second base material layer is arranged on the negative electrode current collector; a positive lug positioning part matched with the positive lug extends from the side edge of the first substrate layer; a negative electrode lug positioning part matched with the negative electrode lug extends from the side edge of the second substrate layer; the outer surface of the positive electrode lug positioning part is provided with a positive electrode expansion lug electrically connected with the positive electrode lug, or the outer surface of the negative electrode lug positioning part is provided with a negative electrode expansion lug electrically connected with the negative electrode lug. The utility model has the advantage of convenient connection with a load circuit, thereby reducing the production cost and improving the production efficiency.
Description
Technical Field
The utility model relates to the field of flexible batteries, in particular to an ultrathin flexible energy storage device with positive and negative lugs on the same surface.
Background
The flexible ultra-thin battery is a flexible and deformable portable power supply, and the thickness of the flexible ultra-thin battery is generally not more than 1.2 mm. With the rapid development of the fields of logistics, medical treatment, wearable equipment and the like in recent years, the rapid development of flexible ultrathin batteries is promoted.
The current flexible ultrathin battery also has the common problem that the connecting surface of the positive electrode tab and the connecting surface of the negative electrode tab face opposite directions. This may cause that when the flexible ultra-thin battery is connected to a load circuit, a switching conductive structure, such as a lead or an electrode plate, may need to be additionally provided on the positive electrode tab or the negative electrode tab, which may affect the production cost and efficiency.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an ultrathin flexible energy storage device with the same surface of a positive electrode lug and a negative electrode lug, which has the advantage of convenient connection with a load circuit, thereby reducing the production cost and improving the production efficiency.
In order to realize the purpose, the utility model provides the following technical scheme:
the utility model provides a positive negative pole ear is with ultra-thin flexible energy storage device of face, includes:
a first substrate layer;
the positive electrode current collector is arranged on the inner surface of the first base material layer, and a positive lug protruding out of the side edge of the first base material layer is arranged on the positive electrode current collector;
a second substrate layer; and the number of the first and second groups,
the negative electrode current collector is arranged on the inner surface of the second base material layer, and a negative electrode lug protruding out of the side edge of the second base material layer is arranged on the negative electrode current collector;
a positive lug positioning part matched with the positive lug extends from the side edge of the first base material layer;
a negative electrode lug positioning part matched with the negative electrode lug extends from the side edge of the second substrate layer;
the outer surface of the positioning part of the positive electrode lug is provided with a positive electrode expansion lug which is electrically connected with the positive electrode lug, or the outer surface of the positioning part of the negative electrode lug is provided with a negative electrode expansion lug which is electrically connected with the negative electrode lug.
Further, the outer surface of the positive electrode lug positioning portion is provided with a positive electrode expansion lug which is electrically connected with the positive electrode lug, and the outer surface of the negative electrode lug positioning portion is provided with a negative electrode expansion lug which is electrically connected with the negative electrode lug.
Furthermore, a through hole is formed in the positioning portion of the positive lug, a first conductive point embedded into the through hole is arranged on the positive lug, and a second conductive point embedded into the through hole and connected with the first conductive point is arranged on the positive expansion lug.
Furthermore, a plurality of through holes which are uniformly distributed are arranged on the positioning part of the positive lug.
Further, the diameter of the through hole is 0.01mm-0.1 mm.
Furthermore, a through hole is formed in the positioning portion of the negative electrode tab, a first conductive point embedded in the through hole is arranged on the negative electrode tab, and a second conductive point embedded in the through hole and connected with the first conductive point is arranged on the negative electrode extended tab.
Furthermore, a plurality of through holes which are uniformly distributed are arranged on the positioning part of the negative electrode lug.
Further, a positive electrode is arranged on the surface, far away from the first base material layer, of the positive electrode current collector, a negative electrode is arranged on the surface, far away from the second base material layer, of the negative electrode current collector, a diaphragm is arranged between the positive electrode and the negative electrode, and electrolyte is loaded in the diaphragm; and a sealing adhesive layer for packaging is arranged between the first base material layer and the second base material layer.
Further, be provided with the trompil in the middle of the sealant layer, positive electrode mass flow body, positive electrode, diaphragm, negative electrode and negative electrode mass flow body all are located in the trompil.
Further, the thickness of sealant layer is 0.1mm-0.5mm, the thickness of first substrate layer or second substrate layer is 50 μm-500 μm, the thickness of positive electrode current collector or negative electrode current collector is 50 μm-500 μm, the thickness of positive electrode or negative electrode is 5 μm-400 μm.
In conclusion, the utility model has the following beneficial effects:
1. the positive electrode expanding lug or the negative electrode expanding lug is adopted, so that the ultrathin flexible energy storage device can be conveniently connected with a load circuit, and a switching conductive structure when the ultrathin flexible energy storage device is connected with the load circuit is reduced, so that the production cost can be reduced, and the production efficiency is improved;
2. the ultrathin flexible energy storage device can be attached to a load circuit, so that space can be saved, and thickness can be reduced.
Drawings
FIG. 1 is a schematic structural diagram of an ultrathin flexible energy storage device with positive and negative electrode lugs on the same side in an embodiment;
FIG. 2 is a planar development view of an ultra-thin flexible energy storage device with co-planar positive and negative electrode ears in an embodiment;
fig. 3 is a schematic structural diagram of the positive tab, the positive tab positioning portion, and the positive expansion tab in the embodiment.
In the figure: 1. a first base material layer; 11. a positive tab positioning portion; 12. a through hole; 2. a positive electrode current collector; 21. a positive tab; 22. a first conductive point; 3. a positive electrode; 4. a diaphragm; 5. sealing the adhesive layer; 6. a negative electrode; 7. a negative electrode current collector; 71. a negative tab; 8. a second substrate layer; 81. a negative tab positioning portion; 9. an anode expanded tab; 91. a second conductive point.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
The embodiment is as follows:
the utility model provides an ultra-thin flexible energy storage device of positive negative pole ear coplanar, refers to fig. 1 and fig. 2, and it includes first substrate layer 1 and second substrate layer 8: a positive electrode current collector 2 is arranged on the inner surface of the first substrate layer 1, and a positive lug 21 protruding out of the side edge of the first substrate layer 1 is arranged on the positive electrode current collector 2; a negative electrode current collector 7 is arranged on the inner surface of the second substrate layer 8, and a negative electrode lug 71 protruding out of the side edge of the second substrate layer 8 is arranged on the negative electrode current collector 7; in the embodiment, a positive electrode tab positioning part 11 matched with the positive electrode tab 21 extends from the side edge of the first substrate layer 1, and a negative electrode tab positioning part 81 matched with the negative electrode tab 71 extends from the side edge of the second substrate layer 8; in the embodiment, the outer surface of the positive tab positioning part 11 is provided with a positive expansion tab 9 electrically connected with the positive tab 21; in the present embodiment, one side surface of positive tab 21 is covered by positive tab positioning portion 11, and one side surface of negative tab 71 is covered by negative tab positioning portion 81, so that the exposed surface of positive tab 21 and the exposed surface of negative tab 71 face in the opposite direction; the positive electrode extended tab 9 is arranged on the outer surface of the positive electrode tab positioning part 11, so that the exposed surface of the positive electrode extended tab 9 and the exposed surface of the negative electrode tab 71 face the same direction; the arrangement of the anode extended tab 9 can reduce a switching conductive structure when the ultrathin flexible energy storage device is connected with a load circuit, thereby reducing the production cost and improving the production efficiency, and the ultrathin flexible energy storage device can save space and reduce the thickness after being attached with the load circuit; of course, in other alternative embodiments, a negative expansion tab electrically connected to the negative electrode tab 71 may be disposed on the outer surface of the negative electrode tab positioning portion 81, or a positive expansion tab 9 may be disposed on the outer surface of the positive electrode tab positioning portion 11, and a negative expansion tab may be disposed on the outer surface of the negative electrode tab positioning portion 81, which is not limited herein.
Referring to fig. 1 to 3, specifically, in this embodiment, a through hole 12 is formed in a positive tab positioning portion 11, a first conductive point 22 embedded in the through hole 12 is arranged on the positive tab 21, and a second conductive point 91 embedded in the through hole 12 and connected to the first conductive point 22 is arranged on the positive extended tab 9; preferably, the positive tab positioning part 11 is provided with a plurality of uniformly distributed through holes 12, and the diameter of each through hole 12 is 0.01mm-0.1 mm; specifically, in this embodiment, the material of the positive tab 21 is conductive graphite, when the conductive graphite is printed on the inner surface of the positive tab positioning portion 11, a part of the conductive graphite enters the through hole 12, and after the conductive graphite is dried, the positive tab 21 and the first conductive point 22 embedded in the through hole 12 are formed; in the embodiment, the positive expanded tab 9 is conductive ink coated on the outer surface of the positive tab positioning portion 11, part of the conductive ink enters the through hole 12 and contacts with the first conductive point 22, and the positive expanded tab 9 and the second conductive point 91 embedded in the through hole 12 are formed after the conductive ink is dried; the first conductive point 22 is connected with the second conductive point 91, so that the positive tab 21 is electrically connected with the positive expansion tab 9; the conductive ink includes one or more of copper paste, carbon paste, aluminum paste, and silver paste, which is not limited herein.
Referring to fig. 1 and fig. 2, specifically, in the embodiment, a positive electrode 3 is arranged on a surface of a positive electrode current collector 2 away from a first substrate layer 1, a negative electrode 6 is arranged on a surface of a negative electrode current collector 7 away from a second substrate layer 8, a separator 4 is arranged between the positive electrode 3 and the negative electrode 6, and an electrolyte is loaded in the separator 4; the electrolyte may be in a solid or semi-solid state, and is not limited herein; a sealing glue layer 5 for packaging is arranged between the first substrate layer 1 and the second substrate layer 8; specifically, sealant layer 5 is frame-shaped in this embodiment, and is provided with the trompil in the middle of it, and positive electrode current collector 2, positive electrode 3, diaphragm 4, negative electrode 6 and negative electrode current collector 7 all are located the trompil to can guarantee the sealed effect of encapsulation.
Referring to fig. 2, in the present embodiment, the thickness of the sealant layer 5 is 0.1mm to 0.5mm, the thickness of the separator 4 carrying the electrolyte is 0.05mm to 0.1mm, the thickness of the first substrate layer 1 or the second substrate layer 8 is 50 μm to 500 μm, the thickness of the positive electrode current collector 2 or the negative electrode current collector 7 is 50 μm to 500 μm, and the thickness of the positive electrode 3 or the negative electrode 6 is 5 μm to 400 μm.
Claims (9)
1. The utility model provides an ultra-thin flexible energy storage device of positive negative pole ear coplanar, includes:
a first base material layer;
the positive electrode current collector is arranged on the inner surface of the first base material layer, and a positive lug protruding out of the side edge of the first base material layer is arranged on the positive electrode current collector;
a second substrate layer; and (c) a second step of,
the negative electrode current collector is arranged on the inner surface of the second base material layer, and a negative electrode lug protruding out of the side edge of the second base material layer is arranged on the negative electrode current collector;
the method is characterized in that:
a positive lug positioning part matched with the positive lug extends from the side edge of the first base material layer;
a negative electrode lug positioning part matched with the negative electrode lug extends from the side edge of the second substrate layer;
the outer surface of the positioning part of the positive electrode lug is provided with a positive electrode expansion lug which is electrically connected with the positive electrode lug, or the outer surface of the positioning part of the negative electrode lug is provided with a negative electrode expansion lug which is electrically connected with the negative electrode lug.
2. The ultrathin flexible energy storage device with the same surface of the positive electrode lug and the negative electrode lug as the anode lug in claim 1, characterized in that: the positive lug is provided with a first conductive point embedded in the through hole, and the positive expanded lug is provided with a second conductive point embedded in the through hole and connected with the first conductive point.
3. The ultrathin flexible energy storage device with coplanar positive and negative electrode lugs of claim 2, characterized in that: and the positive lug positioning part is provided with a plurality of through holes which are uniformly distributed.
4. The ultrathin flexible energy storage device with coplanar positive and negative electrode lugs of claim 2, characterized in that: the diameter of the through hole is 0.01mm-0.1 mm.
5. The ultrathin flexible energy storage device with coplanar positive and negative electrode lugs of claim 1, characterized in that: the negative electrode lug positioning part is provided with a through hole, a first conductive point embedded into the through hole is arranged on the negative electrode lug, and a second conductive point embedded into the through hole and connected with the first conductive point is arranged on the negative electrode extended lug.
6. The ultrathin flexible energy storage device with the same surface of the positive electrode lug and the negative electrode lug as the anode lug in claim 5, characterized in that: and the negative electrode lug positioning part is provided with a plurality of uniformly distributed through holes.
7. The ultrathin flexible energy storage device with coplanar positive and negative electrode lugs of claim 1, characterized in that: a positive electrode is arranged on the surface, far away from the first base material layer, of the positive electrode current collector, a negative electrode is arranged on the surface, far away from the second base material layer, of the negative electrode current collector, a diaphragm is arranged between the positive electrode and the negative electrode, and electrolyte is loaded in the diaphragm; and a sealing adhesive layer for packaging is arranged between the first base material layer and the second base material layer.
8. The ultrathin flexible energy storage device with the same surface of the positive electrode lug and the negative electrode lug as the anode lug of claim 7, characterized in that: be provided with the trompil in the middle of the sealant layer, positive electrode mass flow body, positive electrode, diaphragm, negative electrode and negative electrode mass flow body all are located in the trompil.
9. The ultrathin flexible energy storage device with the same surface of the positive electrode lug and the negative electrode lug as the anode lug of claim 7, characterized in that: the thickness of sealant layer is 0.1mm-0.5mm, the thickness of first substrate layer or second substrate layer is 50 mu m-500 mu m, the thickness of positive electrode current collector or negative electrode current collector is 50 mu m-500 mu m, the thickness of positive electrode or negative electrode is 5 mu m-400 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122902851.3U CN217035917U (en) | 2021-11-24 | 2021-11-24 | Ultrathin flexible energy storage device with positive and negative electrode lugs on same surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122902851.3U CN217035917U (en) | 2021-11-24 | 2021-11-24 | Ultrathin flexible energy storage device with positive and negative electrode lugs on same surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217035917U true CN217035917U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122902851.3U Active CN217035917U (en) | 2021-11-24 | 2021-11-24 | Ultrathin flexible energy storage device with positive and negative electrode lugs on same surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217035917U (en) |
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2021
- 2021-11-24 CN CN202122902851.3U patent/CN217035917U/en active Active
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