CN211404622U - Lithium battery anode aluminum-to-nickel tab - Google Patents
Lithium battery anode aluminum-to-nickel tab Download PDFInfo
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- CN211404622U CN211404622U CN202020213528.8U CN202020213528U CN211404622U CN 211404622 U CN211404622 U CN 211404622U CN 202020213528 U CN202020213528 U CN 202020213528U CN 211404622 U CN211404622 U CN 211404622U
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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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Abstract
The utility model discloses a anodal aluminium of lithium cell changes nickel utmost point ear, including the nickel strap, install the aluminium strip at the nickel strap lower extreme, install the aluminium that has certain length between nickel strap and the aluminium strip changes the nickel district, the aluminium changes the nickel district and welds nickel strap and aluminium strip as an organic whole, the aluminium changes the nickel district to coat and is stamped utmost point ear glue, the aluminium strip welds with the positive plate mass flow body aluminium foil of lithium cell, and after the positive plate mass flow body aluminium foil of lithium cell was encapsulated by the plastic-aluminum membrane, the aluminium changes the nickel district and will install the inside at the lithium cell. The utility model discloses in wrapping up the laser solder joint of nickel district with aluminium commentaries on classics in the inside utmost point ear of lithium cell glues, effectively solved the cracked problem of lithium cell positive pole utmost point ear aluminium strip, can cancel the fixed step of the utmost point ear of buckling of conventional rubberizing simultaneously, take above-mentioned structure can avoid aluminium to change the aluminium strip of nickel district lower extreme and excessively buckle, can reduce the cracked phenomenon of positive pole utmost point ear, reducible rubberizing again and the process of the utmost point ear of buckling reduces manufacturing cost.
Description
Technical Field
The utility model relates to a lithium ion battery production technical field, in particular to lithium cell positive pole aluminium changes nickel utmost point ear.
Background
The polymer lithium ion battery tab is a component of a battery circuit, is a metal conductor for leading out a positive electrode and a negative electrode from a battery core, and is one of the most important raw materials of a lithium battery. The tab is divided into a positive electrode and a negative electrode, and generally, a metal strip of the tab is made of aluminum and is converted into nickel outside the lithium battery body through laser welding.
In the above-mentioned anodal utmost point ear production process, the aluminium of laser welding formation changes the nickel district and is located the lithium cell outside, and anodal utmost point ear has the not good condition of protection in the manufacturing process, along with the increase of anodal utmost point ear number of buckling, the cracked phenomenon takes place comparatively easily in the aluminium strip.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned defect among the prior art, provide one kind and can avoid changeing the too much of nickel district aluminium strip and buckle, can reduce the proportion of anodal utmost point ear phenomenon of rupture, reducible rubberizing and roll over utmost point ear process, can reduce manufacturing cost's anodal aluminium of lithium cell changes nickel utmost point ear.
In order to realize the above purpose, the utility model provides a anodal aluminium of lithium cell changes nickel utmost point ear, including the nickel strap, install the aluminium strip at the nickel strap lower extreme, install aluminium that has certain length between nickel strap and the aluminium strip changes the nickel district, the aluminium changes the nickel district and welds nickel strap and aluminium strip as an organic whole, aluminium changes the nickel district and coats and be stamped utmost point ear glue, the aluminium strip is with the anodal piece mass flow aluminium foil welding of lithium cell, and after the anodal piece mass flow aluminium foil of lithium cell was encapsulated by the plastic-aluminum membrane, the aluminium changes the nickel district and will install the inside at the lithium cell.
Preferably, the length of the nickel strap is 8-16mm, the length of the aluminum strap is 16-50mm, the width of the nickel strap is 1.5-6mm, and the width of the aluminum strap is 1.5-6 mm.
Preferably, the length of the aluminum-to-nickel area is 0.8-1.3 mm.
Preferably, the aluminum nickel-to-aluminum area is provided with 1-2 rows of laser welding spots, each row is provided with 2-4 welding spots, and the welding spots are linearly arranged along the width direction of the aluminum strip.
Preferably, the tab glue completely wraps the aluminum-to-nickel area, and the tab glue exceeds the edge of the aluminum-to-nickel area by 0.1-0.4 mm.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses be equipped with the nickel strap, install at the aluminium strip of nickel strap lower extreme, install the aluminium that has certain length between nickel strap and the aluminium strip changes the nickel district, the aluminium changes the nickel district and welds nickel strap and aluminium strip as an organic whole, the aluminium changes the nickel district and coats and be stamped utmost point ear glue, the aluminium strip welds with the anodal plate mass flow body aluminium foil of lithium cell, and after the anodal plate mass flow body aluminium foil of lithium cell was encapsulated by the plastic-aluminum membrane, the aluminium changes the nickel district and will install in the inside of lithium cell. The utility model discloses in wrapping up the laser solder joint of nickel district with aluminium commentaries on classics in the inside utmost point ear of lithium cell glues, effectively solved the cracked problem of lithium cell positive pole utmost point ear aluminium strip, can cancel the fixed step of the utmost point ear of buckling of conventional rubberizing simultaneously, take above-mentioned structure can avoid aluminium to change the aluminium strip of nickel district lower extreme and excessively buckle, can reduce the cracked phenomenon of positive pole utmost point ear, reducible rubberizing again and the process of the utmost point ear of buckling reduces manufacturing cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a positive electrode tab in the prior art provided by the present invention;
fig. 2 is a schematic structural diagram of an aluminum-to-nickel tab for a positive electrode of a lithium battery provided by the present invention;
fig. 3 is a schematic diagram of the welding of the positive electrode tab and the positive plate of the lithium battery positive electrode aluminum-to-nickel electrode tab.
The figure includes:
1-positive pole lug, 11-nickel strap, 12-aluminum strap, 13-aluminum-to-nickel zone, 14-pole lug glue and 2-positive pole piece.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present embodiment, and it is obvious that the described embodiment is an embodiment of the present invention, not all embodiments. Based on this embodiment in the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work all belong to the protection scope of the present invention.
Please refer to fig. 2 and fig. 3, the utility model provides a lithium battery positive pole aluminium changes nickel utmost point ear, wherein positive utmost point ear 1 comprises nickel strap 11, aluminium strip 12, aluminium change nickel district 13 and utmost point ear glue 14, nickel strap 11 installs aluminium strip 12 at nickel strap 11 lower extreme, installs aluminium that has certain length between nickel strap 11 and the aluminium strip 12 changes nickel district 13, aluminium changes nickel district 13 with nickel strap 11 and aluminium strip 12 welding as an organic whole, aluminium changes nickel district 13 and coats and is stamped utmost point ear glue 14, aluminium strap 12 welds with 2 mass flow wares of positive plate of lithium battery aluminium foil, and after 2 mass flow wares aluminium foils of positive plate of lithium battery were encapsulated by the plastic-aluminum membrane, aluminium changes nickel district 13 and installs the inside at the lithium battery.
The length of the nickel strap 11 is 8-16mm, the length of the aluminum strap 12 is 16-50mm, the width of the nickel strap 11 is 1.5-6mm, and the width of the aluminum strap 12 is 1.5-6 mm.
The length of the aluminum-nickel conversion area 13 is 0.8-1.3 mm.
The aluminum nickel-to-aluminum zone 13 is provided with 1-2 rows of laser welding spots, each row is provided with 2-4 welding spots, and the welding spots are linearly arranged along the width direction of the aluminum strip (12).
The tab glue 14 completely wraps the aluminum nickel-conversion area 13, and the tab glue 14 exceeds the edge of the aluminum nickel-conversion area 13 by 0.1-0.4 mm.
The aluminum strip 12 at the lower end of the positive electrode tab 1 is welded with the current collector aluminum film of the positive plate 2, and the tab glue 14 is sealed inside the lithium battery by the aluminum plastic film, so that smooth conduction of electrons is ensured, and complete sealing inside the battery body is also ensured.
In the lithium battery production manufacturing process, when the aluminum strip 12 of the positive pole lug 1 is accidentally bent, the lug glue 14 utilizes the toughness and the compressive resistance of the lug glue, the influence of the bending action on the aluminum strip 12 can be well reduced, the aluminum strip 12 of the aluminum-to-nickel area 13 can not be directly bent, the folding endurance is enhanced, even if the aluminum strip 12 of the aluminum-to-nickel area 13 is repeatedly bent, the aluminum strip is not easy to break, the positive pole lug 1 is well protected, the phenomenon that the positive pole lug 1 is broken due to repeated bending is reduced, the waste of manpower and materials in the production manufacturing process is greatly reduced, the huge production cost is saved, and the production efficiency is improved.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses be equipped with nickel strap 11, install at the aluminium strip 12 of nickel strap 11 lower extreme, install aluminium that has certain length between nickel strap 11 and the aluminium strip 12 changes nickel district 13, aluminium changes nickel district 13 and welds nickel strap 11 and aluminium strip 12 as an organic wholely, aluminium changes nickel district 13 coats and is stamped utmost point ear glue 14, aluminium strap 12 and the 2 mass flow body aluminium foils welding of the positive plate 2 mass flow body aluminium foils of lithium cell, after 2 mass flow body aluminium foils of the positive plate of lithium cell were encapsulated by the plastic-aluminum membrane, aluminium changes nickel district 13 and will install in the inside of lithium cell. The utility model discloses wrap up the laser solder joint of aluminium commentaries on classics nickel district 13 in lithium cell inside utmost point ear glues 14, play the effect that protection aluminium changes nickel district 13, the aluminium among the anodal utmost point ear 1 changes nickel district 13 encapsulation inside the lithium cell, the cracked problem of aluminium strip 11 of the anodal utmost point ear 1 lower extreme of lithium cell has effectively been solved, can cancel the fixed step of positive utmost point ear 1 of buckling of conventional rubberizing simultaneously, take above-mentioned structure can avoid aluminium to change the aluminium strip 11 of the nickel district 13 lower extreme and too much buckle, can reduce the cracked phenomenon of anodal utmost point ear 1, reducible rubberizing again and the process of the utmost point ear of buckling, and the manufacturing cost is reduced.
Claims (5)
1. The utility model provides a anodal aluminium of lithium cell changes nickel utmost point ear, its characterized in that includes nickel strap (11), installs aluminium strip (12) at nickel strap (11) lower extreme, installs aluminium that has certain length between nickel strap (11) and aluminium strip (12) changes nickel district (13), aluminium changes nickel district (13) and welds nickel strap (11) and aluminium strip (12) as an organic whole, aluminium changes nickel district (13) to coat and has utmost point ear glue (14), aluminium strip (12) and anodal piece (2) mass flow body aluminium foil welding of lithium cell, and after anodal piece (2) mass flow body of lithium cell was encapsulated by the plastic-aluminum membrane, aluminium changed nickel district (13) will install the inside at the lithium cell.
2. The lithium battery positive electrode aluminum-to-nickel tab as claimed in claim 1, wherein the length of the nickel strap (11) is 8-16mm, the length of the aluminum strap (12) is 16-50mm, the width of the nickel strap (11) is 1.5-6mm, and the width of the aluminum strap (12) is 1.5-6 mm.
3. The positive electrode aluminum-to-nickel tab of a lithium battery as claimed in claim 1, wherein the length of the aluminum-to-nickel region (13) is 0.8-1.3 mm.
4. The lithium battery positive electrode aluminum-to-nickel tab according to claim 1, wherein the aluminum-to-nickel area (13) is provided with 1-2 rows of laser welding spots, each row is provided with 2-4 welding spots, and the welding spots are arranged in a straight line along the width direction of the aluminum strip (12).
5. The positive electrode aluminum-to-nickel tab of a lithium battery as claimed in claim 1, wherein the tab glue (14) completely wraps the aluminum-to-nickel region (13), and the tab glue (14) exceeds the edge of the aluminum-to-nickel region (13) by 0.1-0.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020213528.8U CN211404622U (en) | 2020-02-26 | 2020-02-26 | Lithium battery anode aluminum-to-nickel tab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020213528.8U CN211404622U (en) | 2020-02-26 | 2020-02-26 | Lithium battery anode aluminum-to-nickel tab |
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| CN211404622U true CN211404622U (en) | 2020-09-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084792A (en) * | 2022-07-26 | 2022-09-20 | 江西嘉盛新能源有限公司 | Production process of sodium ion steel shell battery |
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2020
- 2020-02-26 CN CN202020213528.8U patent/CN211404622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084792A (en) * | 2022-07-26 | 2022-09-20 | 江西嘉盛新能源有限公司 | Production process of sodium ion steel shell battery |
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