CN101777633A - High- magnification cylindrical explosion-proof composite cap for lithium ion battery - Google Patents
High- magnification cylindrical explosion-proof composite cap for lithium ion battery Download PDFInfo
- Publication number
- CN101777633A CN101777633A CN201010039668A CN201010039668A CN101777633A CN 101777633 A CN101777633 A CN 101777633A CN 201010039668 A CN201010039668 A CN 201010039668A CN 201010039668 A CN201010039668 A CN 201010039668A CN 101777633 A CN101777633 A CN 101777633A
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- nickel
- aluminum
- explosion
- proof
- surface layer
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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 invention discloses a high-rate cylindrical explosion-proof composite cap for a lithium ion battery, which comprises an explosion-proof aluminum sheet, a nickel-plated cap, a small aluminum sheet, a seal ring and an aluminum-nickel composite sheet, wherein the aluminum-nickel composite sheet is welded between the nickel-plated cap and the explosion-proof aluminum sheet; the seal ring seals the edges of the explosion-proof aluminum sheet, the aluminum-nickel composite sheet and the nickel-plated cap; the small aluminum sheet is welded on the outer end surface of the explosion-proof aluminum sheet; the aluminum-nickel composite sheet and the nickel-plated cap are welded by percussion welding or resistance welding; the aluminum-nickel composite sheet orderly comprises a nickel surface layer, an aluminum-nickel composite layer and an aluminum surface layer; the nickel surface layer is provided with a plurality of first bumps, and the aluminum surface layer is provided with a plurality of second bumps; the nickel surface layer is welded with the nickel-plated cap; and the aluminum surface layer is welded with the explosion-proof aluminum sheet. The invention has the advantages of smooth and flat surface, no gap after welding or internal resistance rising after long-term use and greatly prolongs the service life of the battery.
Description
[technical field]
The present invention relates to cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power.
[background technology]
Cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power comprises explosion-proof aluminium flake, nickel plating block, at present, all is to adopt aluminium ring or nickel ring to carry out spot welding or soldering between nickel plating block and the explosion-proof aluminium flake.This structure welding consistency is poor, and spot welding is insecure, and the soldering time is long can to produce oxidation, and the internal resistance of cell is increased, and influences battery useful life.
[summary of the invention]
Purpose of the present invention solves the problems of the prior art exactly, proposes a kind of cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power, can reduce internal resistance, prolongs battery useful life.
For achieving the above object, the present invention proposes a kind of aluminum-nickel compound piece that also comprises, described aluminum-nickel compound piece is welded between nickel plating block and the explosion-proof aluminium flake, described sealing ring is with explosion-proof aluminium flake, aluminum-nickel compound piece, the edge sealing of nickel plating block, be welded with little aluminium flake on the outer face of described explosion-proof aluminium flake, adopt laser spot welding or ultrasonic bonding between described aluminum-nickel compound piece and the explosion-proof aluminium flake, adopt stored energy welding or electric resistance welding welding between aluminum-nickel compound piece and the nickel plating block, described aluminum-nickel compound piece comprises the nickel surface layer that sets gradually, the aluminium nickel clad, the aluminium surface layer, described nickel surface layer is provided with some first salient points, the aluminium surface layer is provided with some second salient points, nickel surface layer and the welding of nickel plating block, aluminium surface layer and the welding of explosion-proof aluminium flake.
As preferably, described some first salient points are circular distribution, and some second salient points also are circular distribution.Rational in infrastructure, easy to process.
As preferably, increase portion on the described sealing ring in addition, described edge coating of increasing portion with little aluminium flake.Vibrations are short-circuited and cause and improved security performance by battery explosion when preventing that little aluminium flake from disconnecting.
Beneficial effect of the present invention: the present invention adopts aluminum-nickel compound piece to weld between explosion-proof aluminium flake and nickel plating block, aluminium face laser spot welding or ultrasonic bonding in explosion-proof aluminium flake and the aluminum-nickel compound piece, the nickel face in nickel plating block and the aluminum-nickel compound piece adopts stored energy welding or the disposable welding of electric resistance welding.Seamless, any surface finish, smooth in welding back.Adopt behind this aluminum-nickel compound piece firm welding between the homogeneous material, use no internal resistance rising phenomenon for a long time, prolonged the useful life of battery greatly.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the structural representation of cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power of the present invention.
[embodiment]
Consult Fig. 1, cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power, comprise explosion-proof aluminium flake 1, nickel plating block 2, little aluminium flake 3, sealing ring 4, also comprise aluminum-nickel compound piece 5, described aluminum-nickel compound piece 5 is welded between nickel plating block 2 and the explosion-proof aluminium flake 1, described sealing ring 4 is welded with little aluminium flake 3 with the edge sealing of explosion-proof aluminium flake 1, aluminum-nickel compound piece 5, nickel plating block 2 on the outer face of described explosion-proof aluminium flake 1.Described aluminum-nickel compound piece 5 comprises nickel surface layer, aluminium nickel clad, the aluminium surface layer that sets gradually, described nickel surface layer and 2 welding of nickel plating block, aluminium surface layer and 1 welding of explosion-proof aluminium flake.The explosion-proof aluminium flake 1 of aluminium matter and aluminium surface layer laser spot welding or the ultrasonic bonding in the aluminum-nickel compound piece 5, the nickel surface layer in nickel plating block 2 and the aluminum-nickel compound piece 5 adopts stored energy welding or the disposable welding of electric resistance welding.Welding operation is convenient, and welding effect is good, and internal resistance is little.
The nickel surface layer of described aluminum-nickel compound piece 5 is provided with some first salient points 51, and the aluminium surface layer is provided with some second salient points 52.Described some first salient points 51 are circular distribution, and some second salient points 52 are circular distribution.First salient point 51 is all corresponding with the shape and the position of second salient point 52, add man-hour successively punching press just can form the simultaneously recessed structure of protruding one side.This structure mainly is in order to improve firm welding, under pressure, this first salient point 51 and second salient point 52 are driven plain substantially during welding, and the projection of opposite planar is not clearly, among Fig. 1 for ease of marking first salient point 51 and second salient point 52, expression obviously.
Increase portion 41 in addition on the described sealing ring 4, described edge coating of increasing portion 41 with little aluminium flake 3.Vibrations are short-circuited and cause and improved security performance by battery explosion when preventing that little aluminium flake 3 from disconnecting.
The present invention is applicable to the high-magnification cylindrical type lithium ion battery of all models, size.
Though the present invention illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (3)
1. cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power, comprise explosion-proof aluminium flake, the nickel plating block, little aluminium flake, sealing ring, it is characterized in that: also comprise aluminum-nickel compound piece, described aluminum-nickel compound piece is welded between nickel plating block and the explosion-proof aluminium flake, described sealing ring is with explosion-proof aluminium flake, aluminum-nickel compound piece, the edge sealing of nickel plating block, be welded with little aluminium flake on the outer face of described explosion-proof aluminium flake, adopt laser spot welding or ultrasonic bonding between described aluminum-nickel compound piece and the explosion-proof aluminium flake, adopt stored energy welding or electric resistance welding welding between aluminum-nickel compound piece and the nickel plating block, described aluminum-nickel compound piece comprises the nickel surface layer that sets gradually, the aluminium nickel clad, the aluminium surface layer, described nickel surface layer is provided with some first salient points, the aluminium surface layer is provided with some second salient points, nickel surface layer and the welding of nickel plating block, aluminium surface layer and the welding of explosion-proof aluminium flake.
2. cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power as claimed in claim 1 is characterized in that: described some first salient points are circular distribution, and some second salient points also are circular distribution.
3. cylindrical lithium ion battery explosion-proof combined nut cap with high multiplying power as claimed in claim 1 or 2 is characterized in that: increase portion on the described sealing ring in addition, described edge coating of increasing portion with little aluminium flake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100396689A CN101777633B (en) | 2010-01-12 | 2010-01-12 | High- magnification cylindrical explosion-proof composite cap for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100396689A CN101777633B (en) | 2010-01-12 | 2010-01-12 | High- magnification cylindrical explosion-proof composite cap for lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101777633A true CN101777633A (en) | 2010-07-14 |
| CN101777633B CN101777633B (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100396689A Active CN101777633B (en) | 2010-01-12 | 2010-01-12 | High- magnification cylindrical explosion-proof composite cap for lithium ion battery |
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| Country | Link |
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| CN (1) | CN101777633B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005548A (en) * | 2010-10-26 | 2011-04-06 | 周卫炳 | Anti-explosion combined cap of lithium ion battery adopting aluminum and nickel-plated steel composite sheet |
| CN102005544A (en) * | 2010-10-26 | 2011-04-06 | 周卫炳 | Lithium ion battery anti-explosion combination block using aluminum stainless steel clad sheet |
| CN108515263A (en) * | 2018-03-29 | 2018-09-11 | 东莞市力星激光科技有限公司 | A kind of burst disk method for laser welding of battery cover board of aluminum shell |
| CN113540631A (en) * | 2021-07-14 | 2021-10-22 | 重庆市赛博瑞新能源科技有限公司 | Integrated injection molding cylindrical lithium ion battery explosion-proof cap |
-
2010
- 2010-01-12 CN CN2010100396689A patent/CN101777633B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005548A (en) * | 2010-10-26 | 2011-04-06 | 周卫炳 | Anti-explosion combined cap of lithium ion battery adopting aluminum and nickel-plated steel composite sheet |
| CN102005544A (en) * | 2010-10-26 | 2011-04-06 | 周卫炳 | Lithium ion battery anti-explosion combination block using aluminum stainless steel clad sheet |
| CN108515263A (en) * | 2018-03-29 | 2018-09-11 | 东莞市力星激光科技有限公司 | A kind of burst disk method for laser welding of battery cover board of aluminum shell |
| CN113540631A (en) * | 2021-07-14 | 2021-10-22 | 重庆市赛博瑞新能源科技有限公司 | Integrated injection molding cylindrical lithium ion battery explosion-proof cap |
| CN113540631B (en) * | 2021-07-14 | 2022-12-06 | 重庆市赛博瑞新能源科技有限公司 | Integrated injection molding cylindrical lithium ion battery explosion-proof cap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101777633B (en) | 2012-02-01 |
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