CN102290542B - Cap for low-resistance lithium ion battery - Google Patents
Cap for low-resistance lithium ion battery Download PDFInfo
- Publication number
- CN102290542B CN102290542B CN201110195420.6A CN201110195420A CN102290542B CN 102290542 B CN102290542 B CN 102290542B CN 201110195420 A CN201110195420 A CN 201110195420A CN 102290542 B CN102290542 B CN 102290542B
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- Prior art keywords
- burst disk
- top cover
- cap
- 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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention discloses a kind of cap for low-resistance lithium ion battery, it comprises sealing ring, top cover is packaged with respectively from top to bottom in described sealing ring, burst disk and orifice plate, described top cover is connected by several laser solder joints with between burst disk, described orifice plate is welded in the bottom of burst disk, and be provided with insulating sleeve between the two, the bound edge and described burst disk has extended internally in the top of top cover, described bound edge and top cover fit tightly, and described burst disk offers a circle indenture with the joint, inner side of top cover, the bottom of described sealing ring has extended internally support level, described orifice plate drops on support level after burst disk comes off, above-mentioned cap for low-resistance lithium ion battery not only greatly reduces the internal resistance of battery cap, and structure is simple, cost-saving, security reliability is high.
Description
Technical field
The present invention relates to battery cap, particularly relate to a kind of cap for low-resistance lithium ion battery.
Background technology
Along with improving constantly of expanding economy and people's living standard, portable mobile apparatus such as video camera, digital camera and notebook computer etc. are made to obtain more and more to come to apply widely, development for battery industry creates good platform, and lithium ion battery is as the one of numerous battery, the performance because of its high-energy-density and various excellence is more and more subject to the favor of people.
As everyone knows, lithium ion battery is made up of numerous parts, in numerous parts, the block of lithium ion battery is but one of critical component of lithium ion battery, quality of its design is related to the size of the internal resistance of cell, life-span and manufacturing cost, along with the application of lithium battery is more and more extensive, the performance requirement of user to lithium battery is also more and more higher, and wherein the most outstanding is that requirement internal resistance is more and more less.Column lithium ion battery block general is at present encapsulated in sealing ring by top cover, nickel ring, burst disk, and then form at burst disk bottom welding up-hole plate.When using PTC the earliest, require that internal resistance is less than 20m Ω; When using nickel ring afterwards instead, require that internal resistance is less than 5m Ω; And generally all require that internal resistance is less than 0.5m Ω now, even also having and require to be less than 0.3m Ω, the block that such low resistance requires, is that existing capping structure is difficult to realize.
Summary of the invention
The object of the present invention is to provide a kind of cap for low-resistance lithium ion battery, it is simple that it has structure, and internal resistance is little, the feature that fail safe is high.
The object of the invention is to be achieved through the following technical solutions:
A kind of cap for low-resistance lithium ion battery, it comprises sealing ring, top cover, burst disk and orifice plate is packaged with respectively from top to bottom in described sealing ring, described top cover is connected by several laser solder joints with between burst disk, described orifice plate is welded in the bottom of burst disk, and being provided with insulating sleeve between the two, the bound edge and described burst disk has extended internally in the top of top cover, described bound edge and top cover fit tightly.
Especially, described burst disk offers a circle indenture with the joint, inner side of top cover, the bottom of described sealing ring has extended internally support level, and described orifice plate drops on support level after burst disk comes off.
Especially, described laser solder joint is set to 4, be uniformly distributed on the binding face that formed between top cover and burst disk, and described laser solder joint is distributed on same circumference.
Beneficial effect of the present invention is, described cap for low-resistance lithium ion battery adopts top cover directly to contact with burst disk, and in adding laser solder joint between the two, make it to be changed into by original plane contact to be welded to connect, reduce contact resistance, and burst disk is arranged bound edge in the top of top cover, increase the contact area of burst disk and top cover, further reduce contact resistance; Not only greatly reduce the internal resistance of battery cap, and structure is simple, cost-saving, security reliability is high.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is the profile of cap for low-resistance lithium ion battery of the present invention;
Fig. 2 is the vertical view of cap for low-resistance lithium ion battery of the present invention.
In figure:
1, sealing ring; 2, top cover; 3, burst disk; 4, orifice plate; 5, connection welding; 6, indenture; 7, laser solder joint; 8, bound edge; 9, insulating sleeve; 10, support level.
Embodiment
Please refer to shown in Fig. 1 and Fig. 2, Fig. 1 is the profile of cap for low-resistance lithium ion battery of the present invention; Fig. 2 is the vertical view of cap for low-resistance lithium ion battery of the present invention.
In the present embodiment, described cap for low-resistance lithium ion battery comprises sealing ring 1, top cover 2 is packaged with respectively from top to bottom in described sealing ring 1, burst disk 3 and orifice plate 4, described top cover 2 is connected by 4 laser solder joints 7 with between burst disk 3, described laser solder joint 7 is uniformly distributed on the binding face that formed between top cover 2 and burst disk 3, and described laser solder joint 7 is distributed on same circumference, described orifice plate 4 is arranged at the bottom of burst disk 3 by connection welding 5, and be provided with insulating sleeve 9 between described burst disk 3 and orifice plate 4, and the upright edge part of described burst disk 3 divides to be coated on top cover 2 and forms bound edge 8, through punch ram shaping, make it to fit closely with top cover 2.
Described burst disk 3 offers a circle indenture 6 with the joint, inner side of top cover 2, the bottom of described sealing ring 1 has extended internally support level 10, described orifice plate 4 drops on support level 10 after burst disk 3 comes off, and avoids orifice plate 4 and the cathode contact of battery, forms short circuit.
Above-mentioned cap for low-resistance lithium ion battery reduces the internal resistance of battery cap in the following way,
1) allow top cover 2 directly contact with burst disk 3, thus reduce internal resistance;
2) add four laser solder joints 7 between top cover 2 and burst disk 3, make it to be changed into by original plane contact to be welded to connect, reduce contact resistance;
3) again by bound edge operation, the upright edge part of burst disk 3 is divided and is coated on top cover 2, through punch ram shaping, make it top cover 2 and fit closely, thus increase burst disk 3 and the contact area of top cover 2, further reduce contact resistance.
Described cap for low-resistance lithium ion battery not only greatly reduces the internal resistance of battery cap, and structure is simple, and cost-saving, be provided with the support level 10 preventing orifice plate 4 from dropping, security reliability is high.
Claims (2)
1. a cap for low-resistance lithium ion battery, it comprises sealing ring, it is characterized in that: in described sealing ring, be packaged with top cover, burst disk and orifice plate respectively from top to bottom, described top cover is connected by several laser solder joints with between burst disk, described orifice plate is welded in the bottom of burst disk, and being provided with insulating sleeve between the two, the bound edge and described burst disk has extended internally in the top of top cover, described bound edge and top cover fit tightly;
Described laser solder joint is set to 4, be uniformly distributed on the binding face that formed between top cover and burst disk, and described laser solder joint is distributed on same circumference;
Described burst disk offers a circle indenture with the joint, inner side of top cover.
2. cap for low-resistance lithium ion battery according to claim 1; It is characterized in that: the bottom of described sealing ring has extended internally support level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110195420.6A CN102290542B (en) | 2011-07-13 | 2011-07-13 | Cap for low-resistance lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110195420.6A CN102290542B (en) | 2011-07-13 | 2011-07-13 | Cap for low-resistance lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102290542A CN102290542A (en) | 2011-12-21 |
| CN102290542B true CN102290542B (en) | 2015-09-02 |
Family
ID=45336768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110195420.6A Active CN102290542B (en) | 2011-07-13 | 2011-07-13 | Cap for low-resistance lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102290542B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241559B (en) * | 2014-09-24 | 2016-09-07 | 新乡市天冠电子有限公司 | Lithium battery cap |
| CN106299171A (en) * | 2016-09-05 | 2017-01-04 | 东莞市奕东电子有限公司 | A kind of power type lithium electricity capping structure |
| CN107492604A (en) * | 2017-08-02 | 2017-12-19 | 江苏镭腾能源科技有限公司 | A kind of dynamic lithium battery explosion-proof cap component |
| CN107785507A (en) * | 2017-10-27 | 2018-03-09 | 新乡市旭兴电源科技有限公司 | Cylindrical lithium ion battery combination cover cap and its manufacture craft |
| CN108091784A (en) * | 2017-12-08 | 2018-05-29 | 深圳市福凯新能源技术有限公司 | Column lithium ion battery block |
| CN110459718A (en) * | 2019-08-29 | 2019-11-15 | 苏州中顶优品科技有限公司 | Plate bound edge circle explosion-proof line explosion rupture disk |
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| CN2338881Y (en) * | 1998-08-26 | 1999-09-15 | 北京有色金属研究总院 | Explosion-proof safety cap for sealed accumulator |
| CN2411578Y (en) * | 2000-03-23 | 2000-12-20 | 信息产业部电子第十八研究所 | Explosion-proof lid for cylindrical lithium ion storage battery |
| CN201360018Y (en) * | 2008-12-26 | 2009-12-09 | 杨学新 | Cylindrical lithium battery anti-explosion combined cover cap |
| CN201374353Y (en) * | 2008-11-19 | 2009-12-30 | 芜湖凯龙电子科技有限公司 | Novel explosion protection cover cap for lithium batteries |
| CN201435414Y (en) * | 2009-07-10 | 2010-03-31 | 杨学新 | Anti-explosion combined cover cap of cylindrical battery |
| CN201490242U (en) * | 2009-08-19 | 2010-05-26 | 杨学新 | Anti-explosion combined cap of cylinder battery |
| CN101807674A (en) * | 2010-04-13 | 2010-08-18 | 天津三合意电子有限公司 | Lithium ion power battery cap and welding method thereof |
| CN101814589A (en) * | 2010-05-06 | 2010-08-25 | 熊辉 | Explosion-proof cap of micro-resistance cylindrical lithium ion battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10340714A (en) * | 1997-04-10 | 1998-12-22 | Fuji Film Selltec Kk | Battery-sealing body |
| CN202159715U (en) * | 2011-07-13 | 2012-03-07 | 无锡市金杨新型电源有限公司 | Cap for low-resistance lithium ion battery |
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2011
- 2011-07-13 CN CN201110195420.6A patent/CN102290542B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2338881Y (en) * | 1998-08-26 | 1999-09-15 | 北京有色金属研究总院 | Explosion-proof safety cap for sealed accumulator |
| CN2411578Y (en) * | 2000-03-23 | 2000-12-20 | 信息产业部电子第十八研究所 | Explosion-proof lid for cylindrical lithium ion storage battery |
| CN201374353Y (en) * | 2008-11-19 | 2009-12-30 | 芜湖凯龙电子科技有限公司 | Novel explosion protection cover cap for lithium batteries |
| CN201360018Y (en) * | 2008-12-26 | 2009-12-09 | 杨学新 | Cylindrical lithium battery anti-explosion combined cover cap |
| CN201435414Y (en) * | 2009-07-10 | 2010-03-31 | 杨学新 | Anti-explosion combined cover cap of cylindrical battery |
| CN201490242U (en) * | 2009-08-19 | 2010-05-26 | 杨学新 | Anti-explosion combined cap of cylinder battery |
| CN101807674A (en) * | 2010-04-13 | 2010-08-18 | 天津三合意电子有限公司 | Lithium ion power battery cap and welding method thereof |
| CN101814589A (en) * | 2010-05-06 | 2010-08-25 | 熊辉 | Explosion-proof cap of micro-resistance cylindrical lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102290542A (en) | 2011-12-21 |
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Address after: 214117 6 Wuxi Road, Xishan, Jiangsu. Patentee after: Wuxi Jinyang New Materials Co., Ltd. Address before: 214117 6 Wuxi Road, Xishan, Jiangsu. Patentee before: Wuxi City Jingyang New Type Power Supply Co., Ltd. |
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