CN101800299A - Explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof - Google Patents
Explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof Download PDFInfo
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- CN101800299A CN101800299A CN201010147892A CN201010147892A CN101800299A CN 101800299 A CN101800299 A CN 101800299A CN 201010147892 A CN201010147892 A CN 201010147892A CN 201010147892 A CN201010147892 A CN 201010147892A CN 101800299 A CN101800299 A CN 101800299A
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- cover plate
- explosion
- proof membrane
- 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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Abstract
The invention relates to an explosion-proof membrane on a cover plate of a power lithium ion battery electrode and a welding method thereof, belonging to the technical field of lithium ion batteries. The explosion-proof membrane comprises the cover plate and an explosion-proof membrane body, wherein explosion-proof holes are arranged on the cover plate. The explosion-proof membrane is characterized in that the explosion-proof membrane body is arranged in the positions of the explosion-proof holes on the cover plate; grooves are arranged on the cover plate and are provided with brazing materials for welding the cover plate and the explosion-proof membrane body; and the cover plate and the explosion-proof membrane body are connected by brazing. In the welding method, the cover plate and the explosion-proof membrane body are fixed together. The method is characterized by manufacturing the grooves on the cover plate when processing the cover plate and the explosion-proof membrane body, placing the brazing materials into the grooves and brazing the cover plate and the explosion-proof membrane body into an integral structure. The invention has the advantages of novel process, convenient processing, simple structure, secure contact, plane-structured welded surface, smoothness without beads, good explosion-proof membrane protection, long battery life, high safety level, wide applicable scope, etc.
Description
Technical field
The invention belongs to technical field of lithium ion, particularly relate to a kind of explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof.
Background technology
At present, characteristics such as lithium ion battery has that volume is little, in light weight, electric weight is strong, memoryless, environmental protection are widely used in industrial production and the daily life.Available dynamic lithium ion cell electrode explosion-proof membrane on cover plate comprises cover plate and rupture pressure disc, and cover plate is provided with explosionproof hole.Exist between existing cover plate and rupture pressure disc contact insecurely, perhaps rupture pressure disc contacts out-of-flatness with cover plate, has knurl thorn etc., easily punctures rupture pressure disc, influences the battery use.Perhaps adopt welding manners such as transition zone to process, have technical problems such as complex process, production cost height, production efficiency be low.Existing battery exists rupture pressure disc to contact out-of-flatness with cover plate, and is easily broken, directly reduced the performance rate of battery, has potential safety hazard, even can cause a serious accident etc.
Summary of the invention
The present invention provides a kind of explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof for solving the technical problem that exists in the known technology.
One of purpose of the present invention provides a kind of simple in structure, contact firmly, solder side is planar structure, smooth no knurl thorn, rupture pressure disc protects, battery life is long, safe class height, the explosion-proof membrane on cover plate of power lithium ion battery electrode of characteristics such as applied widely.
The technical scheme that explosion-proof membrane on cover plate of power lithium ion battery electrode of the present invention is taked is: a kind of explosion-proof membrane on cover plate of power lithium ion battery electrode, comprise cover plate and rupture pressure disc, cover plate is provided with explosionproof hole, be characterized in: cover plate is provided with rupture pressure disc at the explosionproof hole place, fluted on the cover plate, cover plate and rupture pressure disc welding braze is arranged in the groove, and cover plate and rupture pressure disc are that brazing mode links together.
Explosion-proof membrane on cover plate of power lithium ion battery electrode of the present invention can also adopt following technical scheme: described explosion-proof membrane on cover plate of power lithium ion battery electrode is characterized in: cover plate is a rectangular configuration.
Described explosion-proof membrane on cover plate of power lithium ion battery electrode is characterized in: the groove at cover plate explosionproof hole place is a rectangular recess.
Described explosion-proof membrane on cover plate of power lithium ion battery electrode is characterized in: the whole rectangular recess degree of depth is 0.01-2mm, and width is 0.5-5mm.
Two of purpose of the present invention provides a kind of technology novelty that has, and is easy to process, and contact firmly; solder side is planar structure, smooth no knurl thorn, and rupture pressure disc protects; battery life is long, safe class height, the explosion-proof membrane on cover plate of power lithium ion battery electrode welding method of characteristics such as applied widely.
The technical scheme that explosion-proof membrane on cover plate of power lithium ion battery electrode welding method of the present invention is taked is: a kind of explosion-proof membrane on cover plate of power lithium ion battery electrode welding method, cover plate and rupture pressure disc are fixed together, be characterized in: cover plate and rupture pressure disc add man-hour, on the cover board make earlier groove, in groove, place braze, adopt soldering cover plate and the rupture pressure disc structure that is welded into a whole.
Explosion-proof membrane on cover plate of power lithium ion battery electrode welding method of the present invention can also adopt following technical scheme: described explosion-proof membrane on cover plate of power lithium ion battery electrode welding method is characterized in: the groove on the cover plate is processed into rectangular recess.
Described explosion-proof membrane on cover plate of power lithium ion battery electrode welding method is characterized in: rectangular recess adopts impact style to make.
Described explosion-proof membrane on cover plate of power lithium ion battery electrode welding method is characterized in: placing braze in the groove is circular pricker solder stick.
Advantage and good effect that the present invention has are: explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof are owing to adopted brand-new technology scheme of the present invention; compared with prior art; solving existing rupture pressure disc contacts insecure with cover plate; rupture pressure disc easily is punctured; and technical problem such as complex process, production cost height, production efficiency be low; has the technology novelty; easy to process, simple in structure, contact firmly; solder side is planar structure; smooth no knurl thorn, rupture pressure disc protects, and battery life is long; the safe class height, advantage such as applied widely.
Description of drawings
Fig. 1 is the cover plate of power lithium ion battery electrode structural representation; Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1; Fig. 3 is the explosion-proof membrane on cover plate of power lithium ion battery electrode structural representation; Fig. 4 is the B-B sectional structure schematic diagram of Fig. 3.
Among the figure, 1. cover plate, 2. groove, 3. explosionproof hole, 4. rupture pressure disc, 5. pricker solder stick material.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows: consult accompanying drawing 1, Fig. 2, Fig. 3 and Fig. 4.
1 one kinds of explosion-proof membrane on cover plate of power lithium ion battery electrode of embodiment comprise rectangle cover plate 1 and rupture pressure disc 4, and rectangle cover plate 1 is provided with rectangle explosionproof hole 3, its rectangle cover plate 1 is provided with rupture pressure disc 4 at explosionproof hole 3 places, rectangular recess 2 is arranged on the rectangle cover plate 1, and groove 2 degree of depth are 0.02mm, and width is 2mm.Cover plate and rupture pressure disc welding pricker solder stick material 5 is arranged in the groove 2, and cover plate and rupture pressure disc are that brazing mode links together.
2 one kinds of explosion-proof membrane on cover plate of power lithium ion battery electrode welding methods of embodiment are fixed together cover plate and rupture pressure disc.Cover plate and rupture pressure disc add man-hour, and rectangular recess is made in punching press on the cover board earlier, place circular pricker solder stick braze in groove, adopt soldering with cover plate and the rupture pressure disc structure that is welded into a whole.
This explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof have new technology, and be easy to process, simple in structure, and contact firmly; solder side is planar structure, smooth no knurl thorn, and rupture pressure disc protects; battery life is long, safe class height, the advantage such as applied widely.
Claims (8)
1. explosion-proof membrane on cover plate of power lithium ion battery electrode, comprise cover plate and rupture pressure disc, cover plate is provided with explosionproof hole, it is characterized in that: cover plate is provided with rupture pressure disc at the explosionproof hole place, fluted on the cover plate, cover plate and rupture pressure disc welding braze is arranged in the groove, and cover plate and rupture pressure disc are that brazing mode links together.
2. explosion-proof membrane on cover plate of power lithium ion battery electrode according to claim 1 is characterized in that: cover plate is a rectangular configuration.
3. explosion-proof membrane on cover plate of power lithium ion battery electrode according to claim 1 and 2 is characterized in that: the groove at cover plate explosionproof hole place is a rectangular recess.
4. explosion-proof membrane on cover plate of power lithium ion battery electrode according to claim 3 is characterized in that: the whole rectangular recess degree of depth is 0.01-2mm, and width is 0.5-5mm.
5. explosion-proof membrane on cover plate of power lithium ion battery electrode welding method, cover plate and rupture pressure disc are fixed together, it is characterized in that: cover plate and rupture pressure disc add man-hour, on the cover board make earlier groove, in groove, place braze, adopt soldering cover plate and the rupture pressure disc structure that is welded into a whole.
6. explosion-proof membrane on cover plate of power lithium ion battery electrode welding method according to claim 5 is characterized in that: the groove on the cover plate is processed into rectangular recess.
7. according to claim 5 or 6 described explosion-proof membrane on cover plate of power lithium ion battery electrode welding methods, it is characterized in that: rectangular recess adopts impact style to make.
8. explosion-proof membrane on cover plate of power lithium ion battery electrode welding method according to claim 5 is characterized in that: placing braze in the groove is circular pricker solder stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010147892A CN101800299A (en) | 2010-04-13 | 2010-04-13 | Explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010147892A CN101800299A (en) | 2010-04-13 | 2010-04-13 | Explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101800299A true CN101800299A (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010147892A Pending CN101800299A (en) | 2010-04-13 | 2010-04-13 | Explosion-proof membrane on cover plate of power lithium ion battery electrode and welding method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374709A (en) * | 2001-03-09 | 2002-10-16 | 李鑫 | Square lithim cell casing and its making process |
| CN1374710A (en) * | 2001-03-09 | 2002-10-16 | 李鑫 | Lithium cell cover plate with explosion-proof membrane and its making process |
| CN1419308A (en) * | 2002-12-27 | 2003-05-21 | 李鑫 | Safety high-energy lithium ion electric core and making method thereof |
| CN1581533A (en) * | 2004-05-14 | 2005-02-16 | 北京东皋膜技术有限公司 | Aluminium-casing lithium ion cell core with antiexplosion film |
| CN1632967A (en) * | 2003-12-22 | 2005-06-29 | 深圳华粤宝电池有限公司 | Lithium battery combined cover plate and lithium battery comprising the same |
| CN101060168A (en) * | 2006-04-18 | 2007-10-24 | 比亚迪股份有限公司 | Rupture diaphragm manufacture method |
| CN201638879U (en) * | 2010-04-13 | 2010-11-17 | 天津三合意电子有限公司 | Power lithium battery electrode cover plate anti-explosion membrane |
-
2010
- 2010-04-13 CN CN201010147892A patent/CN101800299A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374709A (en) * | 2001-03-09 | 2002-10-16 | 李鑫 | Square lithim cell casing and its making process |
| CN1374710A (en) * | 2001-03-09 | 2002-10-16 | 李鑫 | Lithium cell cover plate with explosion-proof membrane and its making process |
| CN1419308A (en) * | 2002-12-27 | 2003-05-21 | 李鑫 | Safety high-energy lithium ion electric core and making method thereof |
| CN1632967A (en) * | 2003-12-22 | 2005-06-29 | 深圳华粤宝电池有限公司 | Lithium battery combined cover plate and lithium battery comprising the same |
| CN1581533A (en) * | 2004-05-14 | 2005-02-16 | 北京东皋膜技术有限公司 | Aluminium-casing lithium ion cell core with antiexplosion film |
| CN101060168A (en) * | 2006-04-18 | 2007-10-24 | 比亚迪股份有限公司 | Rupture diaphragm manufacture method |
| CN201638879U (en) * | 2010-04-13 | 2010-11-17 | 天津三合意电子有限公司 | Power lithium battery electrode cover plate anti-explosion membrane |
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Application publication date: 20100811 |