CN210120185U - Soft packet of three electrode lithium ion battery's utmost point ear structure - Google Patents
Soft packet of three electrode lithium ion battery's utmost point ear structure Download PDFInfo
- Publication number
- CN210120185U CN210120185U CN201921640144.8U CN201921640144U CN210120185U CN 210120185 U CN210120185 U CN 210120185U CN 201921640144 U CN201921640144 U CN 201921640144U CN 210120185 U CN210120185 U CN 210120185U
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- utmost point
- point ear
- electrode
- lithium ion
- ion 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
Abstract
The utility model provides a soft packet of three-electrode lithium ion battery's utmost point ear structure, including utmost point ear, utmost point ear glue and reference electrode, utmost point ear glue transversely fixes on the utmost point ear, the reference electrode with utmost point ear parallel is fixed with having the interval on the utmost point ear glue, the reference electrode with utmost point ear both ends are all stretched out outside the utmost point ear glue. The utility model discloses a three electrode lithium ion battery's of soft packet of utmost point ear structure can be when the preparation battery with the direct fixed encapsulation of reference electrode in the battery, and not only easy operation can not cause weeping and short circuit yet.
Description
Technical Field
The utility model relates to a soft packet of three-electrode lithium ion battery especially relates to a soft packet of three-electrode lithium ion battery's utmost point ear structure.
Background
Lithium ion batteries are a chemical power source, and electrochemical reactions occur inside the battery at all times during the charging and discharging processes: electrolyte consumption, SEI film (solid electrolyte membrane) generation, lithium precipitation at the negative electrode and the like exist in the battery, so that a method for detecting the electrochemical reaction in the battery in situ is needed.
In the prior art, there are two methods for arranging the reference electrode, one method is to prepare a reference electrode and then insert it between the diaphragm and the electrode of the lithium ion battery cell. For example, chinese patent publication No. CN108987836A, a lithium ion battery three-electrode system and a method for manufacturing the same, discloses a lithium ion battery three-electrode system and a method for manufacturing the same, wherein a reference electrode is a lithium melting copper wire, a lithium melting part of the lithium melting copper wire is inserted between a diaphragm and a negative plate, and the other end of the copper wire is welded to a tab of the reference electrode outside a case. Yet another approach is to make a separate encapsulated reference electrode. In the first method, the reference electrode is directly packaged with the shell after being inserted, and contact short circuit, liquid leakage and the like between a copper wire and an aluminum layer of the aluminum-plastic film are easy to occur in the packaging process; in the second method, a separate reference electrode is used, which is relatively troublesome to manufacture.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a soft packet of three-electrode lithium ion battery's utmost point ear structure uses this utmost point ear structure can not short circuit, weeping when reference electrode and plastic-aluminum membrane encapsulation to simple manufacture.
The technical scheme of the utility model as follows:
the utility model provides a soft packet of three-electrode lithium ion battery's utmost point ear structure, includes utmost point ear, utmost point ear glue and reference electrode, utmost point ear glue is transversely fixed on the utmost point ear, the reference electrode with utmost point ear parallel is fixed with having the interval on the utmost point ear glue, the reference electrode with utmost point ear both ends are all stretched out outside the utmost point ear glue.
Preferably, the reference electrode extends out of the two ends of the tab glue in different lengths.
Preferably, the tab is a negative electrode tab.
Preferably, the number of the reference electrodes is one or more, and a space is arranged between two adjacent reference electrodes.
The utility model has the advantages that:
the utility model discloses a reference electrode and utmost point ear fixed connection are in the same place to utmost point ear glue, when the battery preparation, with one deck diaphragm with the utility model discloses a soft packet of three-electrode lithium ion battery's utmost point ear structure's reference electrode is put into in proper order on the pole piece in the lamination electricity core, then with the mass flow body of this pole piece and the utmost point ear welding back in this utmost point ear structure, also weld utmost point ear with the mass flow body of another pole piece, last electricity core carries out the top seal, the side seal, annotates liquid and seals, when the battery top seals, PP in the utmost point ear glue melts with the PP layer of plastic-aluminum membrane and coheres, has formed effectual packaging structure. Because the tab glue is fixed with the reference electrode in advance, the reference electrode is tightly sealed after being packaged, liquid leakage cannot occur, and short circuit caused by damage to the aluminum plastic film does not exist. The utility model provides a utmost point ear structure is accomplished before the battery preparation, also need not make under special atmosphere to simple structure, processing is convenient.
Drawings
Fig. 1 is the utility model discloses a soft packet of three-electrode lithium ion battery's utmost point ear structure schematic diagram.
Description of reference numerals: 1. a tab; 2. gluing a tab; 3. a reference electrode.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and accompanying drawings.
As shown in fig. 1, the utility model discloses a soft packet of three-electrode lithium ion battery's utmost point ear structure, glue 2 and reference electrode 3 including utmost point ear 1, utmost point ear glue 2 horizontal fixation is in utmost point ear 1 is last, reference electrode 3 with 1 parallel of electrode is fixed with the interval utmost point ear glue 2 is last, reference electrode 3 with utmost point ear 1 both ends are all stretched out outside utmost point ear glue 2.
When the battery preparation, get the good electric core of lamination, turn over the negative pole layer of this electric core intermediate position, control the alignment about the one deck diaphragm that will prepare earlier and put to the negative pole piece on, then will the utility model discloses a reference electrode 3 of soft packet of three-electrode lithium ion battery's utmost point ear structure places on this layer of diaphragm, and reuse high temperature sticky tape is fixed lamination electric core. After welding the negative current collector with the tab in the tab structure, welding the positive current collector with the tab, finally carrying out top sealing, side sealing, liquid injection and sealing on the battery core, and melting and bonding PP in the tab glue and the PP layer of the aluminum plastic film when the battery is sealed on the top to form an effective packaging structure. Because the tab glue is fixed with the reference electrode in advance, the reference battery is packaged in the battery, and the packaged reference electrode is tightly sealed, so that liquid leakage cannot occur, and short circuit caused by damage to the aluminum plastic film does not exist. The utility model provides a utmost point ear structure is accomplished before the battery preparation, also need not make under special atmosphere to simple structure, processing is convenient.
When the tab structure of the soft-package three-electrode lithium ion battery is manufactured, the lengths of the two ends of the reference electrode 3 extending out of the tab glue 2 are preferably different. The longer end extends into the battery during manufacture, and the shorter end is exposed outside the battery for connecting with test equipment during testing. Of course, the lengths of the two ends extending out of the tabs can be equal, the tabs are manufactured according to specific time measurement requirements, and if no special requirement exists, one end used for testing is made to be shorter, so that materials can be saved.
When the tab structure of the soft package three-electrode lithium ion battery is manufactured, the tab is preferably a negative electrode tab. Of course, the tab may be a negative electrode tab or a positive electrode tab, which is determined according to the requirement. If be anodal utmost point ear, when the battery preparation, with the one deck diaphragm with the utility model discloses a reference electrode of three electrode lithium ion battery's utmost point ear structure puts into the anodal piece in the lamination electric core in proper order, then welds utmost point ear with the negative pole mass flow body after with the utmost point ear welding in anodal mass flow body and this utmost point ear structure, then electric core carries out the top, the side seal, annotates liquid and seals.
In the tab structure of the soft-package three-electrode lithium ion battery, one or more reference electrodes are arranged, and intervals are arranged among the reference electrodes. Several of these are specifically used to be made according to the needs of the test.
The utility model discloses a three electrode lithium ion battery's of soft packet of utmost point ear structure can be with reference electrode snap-on in the battery when the preparation battery, and easy operation not only can not cause weeping and short circuit yet.
It should be noted that the above description of the embodiments is provided to help understanding of the present invention, but does not limit the present invention. In addition, the technical features of the present invention described above can be combined with each other as long as they do not conflict with each other. In addition, the above embodiments are only some embodiments, not all embodiments, and all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention based on the embodiments of the present invention.
Claims (4)
1. The utility model provides a soft packet of three-electrode lithium ion battery's utmost point ear structure, its characterized in that, includes utmost point ear, utmost point ear glue and reference electrode, utmost point ear glue is transversely fixed on the utmost point ear, the reference electrode with utmost point ear parallel is fixed with having the interval on the utmost point ear glue, the reference electrode with utmost point ear both ends are all stretched out outside the utmost point ear glue.
2. The tab structure of the soft package three-electrode lithium ion battery of claim 1, wherein the reference electrode extends beyond both ends of the tab glue by different lengths.
3. The tab structure of the soft pack three-electrode lithium ion battery of claim 1, wherein the tab is a negative electrode tab.
4. The tab structure of the soft pack three-electrode lithium ion battery according to any one of claims 1 to 3, wherein the reference electrode is one or more, and a space is provided between two adjacent reference electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921640144.8U CN210120185U (en) | 2019-09-29 | 2019-09-29 | Soft packet of three electrode lithium ion battery's utmost point ear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921640144.8U CN210120185U (en) | 2019-09-29 | 2019-09-29 | Soft packet of three electrode lithium ion battery's utmost point ear structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210120185U true CN210120185U (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921640144.8U Active CN210120185U (en) | 2019-09-29 | 2019-09-29 | Soft packet of three electrode lithium ion battery's utmost point ear structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN210120185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725561A (en) * | 2021-08-25 | 2021-11-30 | 远景动力技术(江苏)有限公司 | Negative pole utmost point ear structure and three electrode laminate polymer battery of three electrode laminate polymer battery core |
-
2019
- 2019-09-29 CN CN201921640144.8U patent/CN210120185U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725561A (en) * | 2021-08-25 | 2021-11-30 | 远景动力技术(江苏)有限公司 | Negative pole utmost point ear structure and three electrode laminate polymer battery of three electrode laminate polymer battery core |
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Effective date of registration: 20211203 Granted publication date: 20200228 |
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Date of cancellation: 20221203 Granted publication date: 20200228 |
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Effective date of registration: 20221228 Granted publication date: 20200228 |