CN215418279U - Folding inserted sheet type battery - Google Patents
Folding inserted sheet type battery Download PDFInfo
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- CN215418279U CN215418279U CN202121637478.7U CN202121637478U CN215418279U CN 215418279 U CN215418279 U CN 215418279U CN 202121637478 U CN202121637478 U CN 202121637478U CN 215418279 U CN215418279 U CN 215418279U
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- electrode
- pole piece
- folded
- tab
- battery
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a folding insertion type battery, belonging to the technical field of battery manufacture and comprising: the electrode group is accommodated in the aluminum-plastic film outer package, and a cavity formed by the electrode group and the aluminum-plastic film outer package is filled with electrolyte; the electrode group comprises a first electrode piece and a composite electrode, the composite electrode is folded in a Z shape, and the first electrode piece is inserted into the folded composite electrode interlayer. The utility model can reduce the die cutting process of the negative plate and avoid dust pollution caused by die cutting of the negative plate.
Description
Technical Field
The utility model belongs to the technical field of battery manufacturing, and particularly relates to a folding plug-in sheet type battery.
Background
The new energy battery belongs to green energy, is more and more emphasized, and is rapidly developed in recent years. The commonly used battery type is a lithium battery, which has higher energy density and higher safety and is the most one used at present. The existing lithium ion battery mainly comprises a shell and a battery cell. The shell generally has cylindrical steel casing, aluminum hull and the soft package of plastic-aluminum membrane, and electric core mainly comprises positive pole piece, diaphragm, negative pole piece three, and the processing procedure pole piece edge of the negative pole piece of cross cutting falls the powder easily, has the risk that causes the dust to impale the diaphragm, causes the battery to cut a short circuit a little.
Therefore, how to provide a folded tab type battery is a problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a foldable tab type battery, which can reduce the die cutting process of a negative electrode plate and avoid dust pollution caused by die cutting of the negative electrode plate.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a folded tab battery comprising: the electrode group is accommodated in the aluminum-plastic film outer package, and a cavity formed by the electrode group and the aluminum-plastic film outer package is filled with electrolyte; the electrode group comprises a first electrode piece and a composite electrode, the composite electrode is folded in a Z shape, and the first electrode piece is inserted into the folded composite electrode interlayer.
Preferably, the pole set further comprises a pole lug, and the guide handle of the pole set is connected with the pole lug in a welding mode.
Preferably, the tab comprises a metal belt and tab glue, the tab glue is fused on the metal belt, and the metal belt is welded with the guide handle.
Preferably, the composite electrode comprises a second pole piece and a diaphragm, and the second pole piece and the diaphragm are compounded together.
Preferably, the second pole piece is a whole pole piece, a single guide handle or a plurality of guide handles are arranged, the guide handles are formed by laser die cutting or cutter die cutting, and the guide handles and the second pole piece are integrally formed or connected to the second pole piece in a riveting or pressing mode.
Preferably, the first pole piece is a single pole piece which is die-cut and provided with a single guide handle.
The utility model has the beneficial effects that:
the utility model can reduce the die cutting process of the negative pole piece, avoid dust pollution caused by die cutting of the negative pole piece, form a composite electrode, solve the problem of alignment of the pole piece and the diaphragm in the folding process, simultaneously maintain a plurality of guide handles on the second pole piece, give consideration to the multiplying power performance, and solve the problem of manufacturability in the pole piece stacking process for the negative pole materials which are difficult to die cut and transfer, such as lithium metal and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram of a composite electrode sheet according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a composite electrode sheet according to embodiment 3 of the present invention.
Wherein, in the figure:
1-a first pole piece; 2-a composite electrode; 3-a guide handle; 4-a second pole piece; 5-a diaphragm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides a folded tab battery including: the electrode group is accommodated in the aluminum-plastic film outer package, and a cavity formed by the electrode group and the aluminum-plastic film outer package is filled with electrolyte; the electrode group comprises a first electrode piece 1 and a composite electrode 2, the composite electrode 2 is in a Z-shaped folding design, and the first electrode piece 1 is inserted between layers of the folded composite electrode 2.
The utility model also comprises a pole ear, and the guide handle 3 of the pole group is connected with the pole ear in a welding way.
The tab comprises a metal band and tab glue, the tab glue is fused on the metal band, and the metal band is welded with the guide handle 3.
The composite electrode 2 comprises a second pole piece 4 and a diaphragm 5, and the second pole piece 4 and the diaphragm 5 are compounded together. The second pole piece 4 and the diaphragm 5 are laminated together by pressing, or heat fusing, or other methods.
In this embodiment, the second pole piece 4 is a whole pole piece, and can be used as both a negative electrode and a positive electrode, and is provided with a single guide handle or a plurality of guide handles, the guide handles are formed by laser die cutting or cutter die cutting, and the guide handles and the second pole piece 4 are integrally formed, or connected to the second pole piece 4 by riveting or pressing.
In this embodiment, the first pole piece 1 is a single pole piece die-cut, and is provided with a single guide handle as a pole piece having a polarity opposite to that of the second pole piece 4.
Example 2
The utility model also provides a manufacturing process of the folding plug-in sheet type battery, which comprises the steps of folding the composite electrode of the electrode group in a Z shape, inserting the first pole piece into the interlayer of the folded composite electrode, accommodating the electrode group in an aluminum plastic film outer package, welding a guide handle of the electrode group and a metal belt of a tab together, welding tab glue and an aluminum plastic film together, and then injecting electrolyte to form the folding plug-in sheet type battery.
The composite electrode comprises a second pole piece and a diaphragm, and the second pole piece and the diaphragm are compounded together.
In this embodiment, the second pole piece is a whole pole piece, and can be used as both a negative electrode and a positive electrode, and a single guide handle or a plurality of guide handles are provided, the guide handles are formed by laser die cutting or cutter die cutting, and the guide handles and the second pole piece are integrally formed or connected to the second pole piece by riveting or pressing.
In this embodiment, the first pole piece is a single pole piece die-cut, and is provided with a single guide handle as a pole piece having a polarity opposite to that of the second pole piece.
The utility model can reduce the die cutting process of the negative pole piece, avoid dust pollution caused by die cutting of the negative pole piece, form a composite electrode, solve the problem of alignment of the pole piece and the diaphragm in the folding process, simultaneously maintain a plurality of guide handles on the second pole piece, give consideration to the multiplying power performance, and solve the problem of manufacturability in the pole piece stacking process for the negative pole materials which are difficult to die cut and transfer, such as lithium metal and the like.
The utility model solves the problems that the edge of the manufactured pole piece of the die-cut second pole piece is easy to fall off powder, and the risk of penetrating a diaphragm by dust is caused, so that the micro short circuit of the battery is caused; a die cutting procedure is reduced, the turnover of the pole pieces in the material box is reduced, and the pole piece collision is reduced; the second pole piece is compounded with the diaphragm, so that the second pole piece can be prevented from moving in the diaphragm, and the coating alignment accuracy of the diaphragm, the second pole piece and the first pole piece is improved; for the negative electrodes which are made of materials such as lithium metal and are soft and not easy to turnover, the turnover or stacking of the pole pieces in the manufacturing process can be solved by the composite negative electrode, and the difficult problem of manufacturability is solved.
Example 3
As shown in fig. 3, the present embodiment is different from embodiment 1 in that: the forming method of the composite electrode comprises the following steps: and compounding the second pole piece and the diaphragm, cutting off and stacking.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A folded tab battery comprising: the electrode group is accommodated in the aluminum-plastic film outer package, and a cavity formed by the electrode group and the aluminum-plastic film outer package is filled with electrolyte; the electrode group comprises a first electrode piece and a composite electrode, the composite electrode is folded in a Z shape, and the first electrode piece is inserted into the folded composite electrode interlayer.
2. The folded tab battery of claim 1 further comprising a tab, wherein the guide handle of the electrode assembly is welded to the tab.
3. The folded tab battery of claim 2 wherein the tab comprises a metal band and tab glue, the tab glue fused to the metal band, the metal band welded to the guide handle.
4. A folded tab battery according to claim 1 wherein the composite electrode comprises a second pole piece and a separator, the second pole piece and the separator being laminated together.
5. The folded inserted-sheet battery as claimed in claim 4, wherein the second electrode plate is a whole electrode plate, and a single guide handle or a plurality of guide handles are provided, the guide handle is formed by laser die cutting or cutter die cutting, and the guide handle is integrally formed with the second electrode plate, or connected to the second electrode plate by riveting or pressing.
6. A folded tab battery according to claim 1 wherein the first pole piece is a die cut single piece pole piece provided with a single guide handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121637478.7U CN215418279U (en) | 2021-07-19 | 2021-07-19 | Folding inserted sheet type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121637478.7U CN215418279U (en) | 2021-07-19 | 2021-07-19 | Folding inserted sheet type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215418279U true CN215418279U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121637478.7U Active CN215418279U (en) | 2021-07-19 | 2021-07-19 | Folding inserted sheet type battery |
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| CN (1) | CN215418279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115832632A (en) * | 2022-11-03 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Pole piece, electric core, battery and electric equipment |
-
2021
- 2021-07-19 CN CN202121637478.7U patent/CN215418279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115832632A (en) * | 2022-11-03 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Pole piece, electric core, battery and electric equipment |
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