CN105552253B - The anti-explosion valve structure and its processing technology of a kind of lithium battery - Google Patents
The anti-explosion valve structure and its processing technology of a kind of lithium battery Download PDFInfo
- Publication number
- CN105552253B CN105552253B CN201610063290.3A CN201610063290A CN105552253B CN 105552253 B CN105552253 B CN 105552253B CN 201610063290 A CN201610063290 A CN 201610063290A CN 105552253 B CN105552253 B CN 105552253B
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- Prior art keywords
- lithium battery
- explosion
- layer
- adhesive layer
- pressure disc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
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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
-
- 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 invention provides a kind of anti-explosion valve structure of lithium battery and its processing technology, it can solve lithium battery casing and rupture pressure disc welds insecure problem, good sealing effect, improve the stability of anti-explosion valve structure, improve the security of lithium battery, including lithium battery casing, the lithium battery casing includes explosion-proof valve area, it is characterised in that：Adhesive layer is compounded with the explosion-proof valve area, the through hole for being each passed through the lithium battery casing and adhesive layer is provided with the explosion-proof valve area, in the explosion-proof valve area, the upper end of the adhesive layer is covered with rupture pressure disc.
Description
Technical field
The present invention relates to a kind of technical field of lithium batteries, the anti-explosion valve structure and its processing work of specially a kind of lithium battery
Skill.
Background technology
Lithium battery is green novel energy-storing component, has preferable heavy-current discharge performance and higher energy
Density, green, the advantages that energy density is big, and service life is long, in automobile energy storage technology, hybrid vehicle, communication, family
The fields such as electrical appliance, military project, space flight have a wide range of applications.But lithium battery is once overcharged or crossed and puts or by hard hit
A large amount of gases and amount of heat can be discharged, so that the expansion of cell internal gas and temperature rise of sealed environment, seriously
When can produce explosion accident.
At present, lithium battery sets anti-explosion valve structure to prevent explosion accident mostly, and primary structure is shown in Fig. 1, Fig. 2, in Fig. 1
By forming " wound " in the thinner thickness of the punching press explosion-proof line 7 on lithium battery casing, explosion-proof line region, lithium battery occurs internal
It can be blown during gas leakage at explosion-proof line, prevent whole battery explosion, its shortcoming can not be by controlling explosion-proof line
The depth accurately to control explosion-proof performance, and explosion-proof performance is unstable.Fig. 2 lithium battery anti-explosion valve structure is then by lithium battery case
An anti-riot hole 8 is opened up on body, and rupture pressure disc 6 is covered on anti-riot hole 8, using laser or ultrasonic bonding, realizes battery
Sealing, this structure easily can adjust explosion-proof performance by adjusting the thickness of rupture pressure disc, but rupture pressure disc and lithium battery
Case weld easily produces stomata or rosin joint, causes battery leakage or extraneous gas to enter, deficient manufacturing procedure rate is high, sealing effect
Difference.Moreover, during battery use, anti-riot hole 8 is larger and rupture pressure disc is very thin is easily broken due to opening up, and causes leakage or outer
Portion's gas enters, and the less stable of anti-explosion valve structure, potential safety hazard be present.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of anti-explosion valve structure of lithium battery and its processing technology, it can be solved
Certainly lithium battery casing and rupture pressure disc weld insecure problem, good sealing effect, improve the stability of anti-explosion valve structure, improve
The security of lithium battery.
A kind of anti-explosion valve structure of lithium battery, including lithium battery casing, the lithium battery casing include explosion-proof valve area, and it is special
Sign is：Adhesive layer is compounded with the explosion-proof valve area, is provided with the explosion-proof valve area and is each passed through the lithium battery case
The through hole of body and adhesive layer, in the explosion-proof valve area, the upper end of the adhesive layer is covered with rupture pressure disc.
Further, the through hole is at least provided with two.
Further, the lithium battery casing is Al-alloy casing, and the adhesive layer is low melting point aluminium alloy layer.
Further, the rupture pressure disc includes aluminum metal layer.
Further, the rupture pressure disc includes mutual compound aluminum metal layer and nickel metal layer.
Further, the lithium battery casing is steel metal housing, and the adhesive layer is low melting point steel metal, described explosion-proof
Film includes steel metal layer.
A kind of processing technology for the anti-explosion valve structure for producing lithium battery, it is characterised in that：In the explosion-proof valve of lithium battery casing
Composite adhered layer in area, at least two are provided with the explosion-proof valve area and is each passed through the lithium battery casing and adhesive layer
Through hole, melting layer is bonded by temperature-pressure rupture pressure disc is compounded in the explosion-proof valve area, lithium battery casing closes for aluminium
Golden shell body, the adhesive layer are low melting point aluminium alloy layer, and rupture pressure disc is aluminum metal layer or mutually compound aluminum metal layer and nickel gold
Belong to layer.
After structure using the present invention, in that context it may be convenient to adjust explosion-proof performance by adjusting the thickness of rupture pressure disc, pass through
In lithium battery casing composite adhered layer, can integrally be combined by the setting lithium battery casing and rupture pressure disc in adhesive layer,
Bond strength is high, and lithium battery casing and rupture pressure disc weld insecure problem when avoiding laser welding and ultrasonic bonding, close
It is good to seal effect, improves the stability of anti-explosion valve structure, lithium battery casing and adhesive layer are each passed through by setting at least two
Through hole, it is possible to reduce the area of single through hole so that the rupture pressure disc being covered on through hole is not easy to be punctured by external force, further
The stability of anti-explosion valve structure is improved, improves the security of lithium battery.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of traditional lithium battery anti-explosion valve structure；
Fig. 2 is the schematic diagram of traditional another lithium battery anti-explosion valve structure；
Fig. 3 is a kind of schematic diagram of lithium battery anti-explosion valve structure of the present invention；
Fig. 4 is a kind of structural representation of the side view of lithium battery anti-explosion valve structure of the present invention；
Fig. 5 is the structural representation of the side view of another lithium battery anti-explosion valve structure of the present invention；
Fig. 6 is the partial schematic sectional view of the lithium battery anti-explosion valve structure of the present invention.
Embodiment
The present invention is described in further detail below according to drawings and examples.
Embodiment 1：As shown in Fig. 3,4,5,6, a kind of anti-explosion valve structure of lithium battery of the invention, including lithium battery case
Body, lithium lithium battery casing is Al-alloy casing in the present embodiment, and lithium battery casing includes explosion-proof valve area 3, and lithium battery casing includes
Housing 1 and cover plate 2, explosion-proof valve area 3, which can be arranged on housing 1, can also be arranged on cover plate 2, be arranged in figure on cover plate 2, prevent
Adhesive layer 4 is compounded with Bao Fa areas 3, adhesive layer 4 is low melting point aluminium alloy layer in the present embodiment, is provided with explosion-proof valve area 3
Be each passed through the through hole 5 of lithium battery casing and adhesive layer 4, in the explosion-proof valve area 3, the upper end of adhesive layer 4 covered with rupture pressure disc 6,
Rupture pressure disc 6 includes aluminum metal layer, in addition preferably, rupture pressure disc 6 can include mutual compound aluminum metal layer and nickel metal layer, prevents
The aluminum metal layer of quick-fried film 6 contacts with adhesive layer 4, including mutually the rupture pressure disc 6 of compound aluminum metal layer and nickel metal layer has more preferably
Intensity, the stability of anti-explosion valve structure can be further increased.
Embodiment 2：As shown in Fig. 3,4,5,6, the anti-explosion valve structure of lithium battery includes lithium battery casing, lithium in the present embodiment
Lithium battery casing is steel sheel, and lithium battery casing includes explosion-proof valve area 3, and lithium battery casing includes housing 1 and cover plate 2, explosion-proof valve
Area 3, which can be arranged on housing 1, can also be arranged on cover plate 2, be arranged in figure on cover plate 2, and bonding is compounded with explosion-proof valve area 3
Layer 4, adhesive layer 4 be low melting point steel metal layer in the present embodiment, be provided with explosion-proof valve area 3 be each passed through lithium battery casing with
The through hole 5 of adhesive layer 4, in the explosion-proof valve area 3, the upper end of adhesive layer 4 include steel metal layer covered with rupture pressure disc 6, rupture pressure disc 6.
Explosion-proof valve area 3 can be set can also be set in irregular figure in regular figure, see Fig. 5, explosion-proof valve area 3
Through hole 5 can be arranged in a row, and through hole 5 is multiple apertures, and rupture pressure disc 6 is correspondingly arranged growth strip and is covered in explosion-proof valve area 3.
See Fig. 3,4, explosion-proof valve area 3 is rectangle, through hole 5 can set it is multiple be distributed in explosion-proof valve area 3, rupture pressure disc 6 is right
It should be covered in explosion-proof valve area 3.By setting multiple through holes 5, it is possible to reduce the area of single through hole so that be covered on through hole
Rupture pressure disc be not easy to be punctured by external force, further increase the stability of anti-explosion valve structure, improve the security of lithium battery.
In the anti-explosion valve structure of the lithium battery of the processing present invention, when lithium battery casing selects aluminum hull, adhesive layer is from low
Fusing point aluminium alloy layer, rupture pressure disc can select aluminum metal layer, can also preferably mutually compound aluminum metal layer and nickel metal layer it is anti-
Quick-fried film 6, the first composite adhered layer in the explosion-proof valve area of lithium battery casing, in explosion-proof valve area being provided with least two is each passed through
The through hole of lithium battery casing and adhesive layer, melting layer is bonded by temperature-pressure rupture pressure disc is compounded in explosion-proof valve area,
It is heated up to the aluminum metal layer of rupture pressure disc 6 and lithium battery case bluk recombination after 400-500 degree after the thawing of low melting point aluminium alloy layer, together
Bond strength between kind metal is high, and lithium battery casing and rupture pressure disc welding can not when avoiding laser welding and ultrasonic bonding
By the problem of, good sealing effect improves the stability of anti-explosion valve structure, low melting point aluminium alloy is from 4045,4047,4A13 etc.
Four line aluminium alloys.
Explanation embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in this hair
Within bright protection domain.
Claims (5)
1. a kind of anti-explosion valve structure of lithium battery, including lithium battery casing, the lithium battery casing includes explosion-proof valve area, its feature
It is：Adhesive layer is compounded with the explosion-proof valve area, is provided with the explosion-proof valve area and is each passed through the lithium battery casing
With the through hole of adhesive layer, in the explosion-proof valve area, the upper end of the adhesive layer is covered with rupture pressure disc；The through hole at least provided with
There are two, the lithium battery casing is Al-alloy casing, and the adhesive layer is low melting point aluminium alloy layer.
A kind of 2. anti-explosion valve structure of lithium battery according to claim 1, it is characterised in that：The rupture pressure disc includes aluminium gold
Belong to layer.
A kind of 3. anti-explosion valve structure of lithium battery according to claim 1, it is characterised in that：The rupture pressure disc includes mutual
Compound aluminum metal layer and nickel metal layer.
A kind of 4. anti-explosion valve structure of lithium battery according to claim 1, it is characterised in that：The lithium battery casing is steel
Metal shell, the adhesive layer are low melting point steel metal, and the rupture pressure disc includes steel metal layer.
A kind of 5. processing technology for the anti-explosion valve structure for producing the lithium battery described in claim 1, it is characterised in that：In lithium battery
Composite adhered layer in the explosion-proof valve area of housing, in the explosion-proof valve area being provided with least two is each passed through the lithium battery case
The through hole of body and adhesive layer, rupture pressure disc is compounded in the explosion-proof valve area by being heated up to 400-500 DEG C of bonding melting layer
On, lithium battery casing is Al-alloy casing, and the adhesive layer is low melting point aluminium alloy layer, and rupture pressure disc is for aluminum metal layer or mutually
Compound aluminum metal layer and nickel metal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610063290.3A CN105552253B (en) | 2016-01-31 | 2016-01-31 | The anti-explosion valve structure and its processing technology of a kind of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610063290.3A CN105552253B (en) | 2016-01-31 | 2016-01-31 | The anti-explosion valve structure and its processing technology of a kind of lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105552253A CN105552253A (en) | 2016-05-04 |
| CN105552253B true CN105552253B (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610063290.3A Active CN105552253B (en) | 2016-01-31 | 2016-01-31 | The anti-explosion valve structure and its processing technology of a kind of lithium battery |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110880564A (en) * | 2019-10-28 | 2020-03-13 | 宜兴市惠华复合材料有限公司 | Novel lithium battery shell and shell cover applying same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY122324A (en) * | 1998-02-03 | 2006-04-29 | Toyo Kohan Co Ltd | A method of forming a protection film for a safety valve element, a safety valve element which is coated with a protection film, a closing plate for battery using same and a closed battery using same. |
| JP2000182587A (en) * | 1998-12-10 | 2000-06-30 | Wako Denshi Kk | Safety valve for preventing explosion of battery and manufacture thereof |
| JP2000231912A (en) * | 1999-02-15 | 2000-08-22 | Toyota Central Res & Dev Lab Inc | Safety valve device of secondary battery |
| CN2461154Y (en) * | 2001-01-04 | 2001-11-21 | 纪明均 | Battery top lid component containing safety valve |
| CN2469562Y (en) * | 2001-03-12 | 2002-01-02 | 深圳市里比电池有限公司 | Battery explosion-proof component and lithium ion battery with this component |
| JP2004281061A (en) * | 2003-03-12 | 2004-10-07 | Sumitomo Electric Fine Polymer Inc | Explosion-proof valve for battery and the battery equipped with it |
| CN202308122U (en) * | 2011-09-29 | 2012-07-04 | 力神迈尔斯动力电池***有限公司 | Aluminum membrane type explosion-proof valve of high-capacity lithium ion battery |
| JP5969368B2 (en) * | 2012-11-30 | 2016-08-17 | 昭和電工パッケージング株式会社 | Exterior body for electrochemical element |
| CN204155988U (en) * | 2014-08-15 | 2015-02-11 | 李震祺 | A kind of lithium ion cylinder battery cover plate explosion-proof valve and battery |
| CN204257716U (en) * | 2014-12-19 | 2015-04-08 | 山东衡远新能源科技有限公司 | Anti-explosion cover plate for lithium battery |
| CN204632837U (en) * | 2015-04-27 | 2015-09-09 | 迪吉亚节能科技股份有限公司 | Lithium cell core pressure relief |
| CN205488247U (en) * | 2016-01-31 | 2016-08-17 | 谢振华 | Explosion -proof valve structure of lithium cell |
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- 2016-01-31 CN CN201610063290.3A patent/CN105552253B/en active Active
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| CN105552253A (en) | 2016-05-04 |
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Effective date of registration: 20160912 Address after: Dongshanzui dingshuzhen Yixing city 214174 Jiangsu city of Wuxi Province Applicant after: Yixing Huiyuan composite material Co., Ltd. Address before: Dongshanzui dingshuzhen Yixing city 214174 Jiangsu city of Wuxi Province Applicant before: Xie Zhenhua |
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