CN205488247U - Explosion -proof valve structure of lithium cell - Google Patents
Explosion -proof valve structure of lithium cell Download PDFInfo
- Publication number
- CN205488247U CN205488247U CN201620092641.9U CN201620092641U CN205488247U CN 205488247 U CN205488247 U CN 205488247U CN 201620092641 U CN201620092641 U CN 201620092641U CN 205488247 U CN205488247 U CN 205488247U
- Authority
- CN
- China
- Prior art keywords
- explosion
- lithium battery
- proof valve
- valve structure
- pressure disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 66
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000004880 explosion Methods 0.000 title claims abstract description 38
- 239000012790 adhesive layer Substances 0.000 claims description 24
- 239000010410 layer Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 150000002641 lithium Chemical class 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract 2
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- SMBQBQBNOXIFSF-UHFFFAOYSA-N dilithium Chemical compound [Li][Li] SMBQBQBNOXIFSF-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides an explosion -proof valve structure of lithium cell, lithium battery case and the insecure problem of rupture membrane welding can be solved to it, sealed effectual, have improved the stability of explosion -proof valve structure, have improved the security of lithium cell, including lithium battery case, lithium battery case includes explosion -proof valve district, its characterized in that: explosion -proof valve is distinguished and is gone up the compound bond line that has be provided with in the explosion -proof valve district and pass respectively the through -hole of lithium battery case and bond line in the explosion -proof valve district the upper end of bond line covers there is rupture membrane.
Description
Technical field
This utility model relates to a kind of technical field of lithium batteries, the anti-explosion valve structure of a kind of lithium battery.
Background technology
Lithium battery is the novel energy-storing components and parts of environmental protection, there is preferable heavy-current discharge performance and higher energy density, environmental protection, energy density is big, service life, the advantage such as length, had a wide range of applications in fields such as automobile energy storage technology, hybrid vehicle, communication, household electrical appliance, military project, space flight.But lithium battery once overcharges or excessively puts or can be discharged a large amount of gas and amount of heat by hard hit, so that the cell internal gas of sealed environment expands and temperature raises, explosion accident time serious, can be produced.
At present, lithium battery mostly arranges anti-explosion valve structure and prevents explosion accident from occurring, primary structure is shown in Fig. 1, Fig. 2, by at punching press explosion-proof line 7 on lithium battery casing in Fig. 1, the thinner thickness in explosion-proof line region forms " wound ", and lithium battery generation internal gas can be blown when revealing at explosion-proof line, prevents whole battery explosion, its shortcoming is cannot accurately to control explosion-proof performance by the depth controlling explosion-proof line, and explosion-proof performance is unstable.The lithium battery anti-explosion valve structure of Fig. 2 is then by offering an anti-riot hole 8 on lithium battery casing, and on anti-riot hole 8, cover rupture pressure disc 6, utilize laser or ultrasonic bonding, realize cell sealing, this structure can regulate explosion-proof performance by the thickness of adjustment rupture pressure disc easily, but rupture pressure disc and lithium battery casing welding easily produce pore or rosin joint, cause battery leakage or extraneous gas to enter, deficient manufacturing procedure rate is high, sealing weak effect.And, during battery uses, owing to offering, anti-riot hole 8 is relatively big and rupture pressure disc is the thinnest is easily broken, and causes leakage or extraneous gas to enter, and the less stable of anti-explosion valve structure exists potential safety hazard.
Utility model content
For the problems referred to above, this utility model provides the anti-explosion valve structure of a kind of lithium battery, and it can solve lithium battery casing and rupture pressure disc welds insecure problem, good sealing effect, improves the stability of anti-explosion valve structure, improves the safety of lithium battery.
A kind of anti-explosion valve structure of lithium battery, including lithium battery casing, described lithium battery casing includes explosion-proof valve district, it is characterized in that: in described explosion-proof valve district, be compounded with adhesive layer, in described explosion-proof valve district, be provided with the through hole being each passed through described lithium battery casing and adhesive layer, in described explosion-proof valve district, the upper end of described adhesive layer be coated with rupture pressure disc.
Further, described through hole is at least provided with two.
Further, described lithium battery casing is Al-alloy casing, and described adhesive layer is low melting point aluminium alloy layer.
Further, described rupture pressure disc includes aluminum metal layer.
Further, described rupture pressure disc includes mutual clad aluminum metal level and nickel metal layer.
Further, described lithium battery casing is steel metal shell, and described adhesive layer is low melting point steel metal, and described rupture pressure disc includes steel metal level.
After using structure of the present utility model, explosion-proof performance is regulated easily by the thickness of adjustment rupture pressure disc, by at the composite adhered layer of lithium battery casing, by making lithium battery casing and rupture pressure disc overall to combine in the setting of adhesive layer, bond strength is high, when avoiding laser welding and ultrasonic bonding, lithium battery casing and rupture pressure disc weld insecure problem, good sealing effect, improve the stability of anti-explosion valve structure, the through hole of lithium battery casing and adhesive layer it is each passed through by arranging at least two, the area of single through hole can be reduced, make covering rupture pressure disc on through hole be susceptible to external force to be punctured, further increase the stability of anti-explosion valve structure, improve the safety of lithium battery.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of traditional a kind of lithium battery anti-explosion valve structure；
Fig. 2 is the schematic diagram of traditional another kind of lithium battery anti-explosion valve structure；
Fig. 3 is the schematic diagram of a kind of lithium battery anti-explosion valve structure of the present utility model；
Fig. 4 is the structural representation of the side-looking of a kind of lithium battery anti-explosion valve structure of the present utility model；
Fig. 5 is the structural representation of the side-looking of another kind of lithium battery anti-explosion valve structure of the present utility model；
Fig. 6 is the partial schematic sectional view of lithium battery anti-explosion valve structure of the present utility model.
Detailed description of the invention
Below according to drawings and Examples, this utility model is described in further detail.
nullEmbodiment 1: such as Fig. 3、4、5、Shown in 6，The anti-explosion valve structure of a kind of lithium battery of the present utility model，Including lithium battery casing，In the present embodiment, lithium lithium battery casing is Al-alloy casing，Lithium battery casing includes explosion-proof valve district 3，Lithium battery casing includes housing 1 and cover plate 2，Explosion-proof valve district 3 can be arranged on housing 1 and can also be arranged on cover plate 2，Figure is arranged on cover plate 2，Adhesive layer 4 it is compounded with in explosion-proof valve district 3，In the present embodiment, adhesive layer 4 is low melting point aluminium alloy layer，The through hole 5 being each passed through lithium battery casing and adhesive layer 4 it is provided with in explosion-proof valve district 3，In explosion-proof valve district 3、The upper end of adhesive layer 4 is coated with rupture pressure disc 6，Rupture pressure disc 6 includes aluminum metal layer，In addition as preferably，Rupture pressure disc 6 can include mutual clad aluminum metal level and nickel metal layer，The aluminum metal layer of rupture pressure disc 6 contacts with adhesive layer 4，Rupture pressure disc 6 including mutual clad aluminum metal level and nickel metal layer has more preferable intensity，The stability of anti-explosion valve structure can be further increased.
Embodiment 2: such as Fig. 3, 4, 5, shown in 6, the anti-explosion valve structure of lithium battery includes lithium battery casing, in the present embodiment, lithium lithium battery casing is steel sheel, lithium battery casing includes explosion-proof valve district 3, lithium battery casing includes housing 1 and cover plate 2, explosion-proof valve district 3 can be arranged on housing 1 and can also be arranged on cover plate 2, figure is arranged on cover plate 2, adhesive layer 4 it is compounded with in explosion-proof valve district 3, in the present embodiment, adhesive layer 4 is low melting point steel metal level, the through hole 5 being each passed through lithium battery casing and adhesive layer 4 it is provided with in explosion-proof valve district 3, in explosion-proof valve district 3, the upper end of adhesive layer 4 is coated with rupture pressure disc 6, rupture pressure disc 6 includes steel metal level.
Explosion-proof valve district 3 can arrange and can also arrange in irregular figure in regular figure, sees Fig. 5, and the through hole 5 in explosion-proof valve district 3 can arrange in a row, and through hole 5 is multiple aperture, and rupture pressure disc 6 is correspondingly arranged growth strip and covers in explosion-proof valve district 3.
See Fig. 3,4, explosion-proof valve district 3 is rectangle, and through hole 5 can arrange multiple being distributed in explosion-proof valve district 3, and rupture pressure disc 6 is corresponding to be covered in explosion-proof valve district 3.By arranging multiple through hole 5, it is possible to reduce the area of single through hole so that covering rupture pressure disc on through hole is susceptible to external force and is punctured, and further increases the stability of anti-explosion valve structure, improves the safety of lithium battery.
nullWhen processing the anti-explosion valve structure of lithium battery of the present utility model，First composite adhered floor in the explosion-proof valve district of lithium battery casing，Explosion-proof valve district is provided with at least two and is each passed through the through hole of lithium battery casing and adhesive layer，By temperature-pressure, adhesive layer is melted to be compounded in explosion-proof valve district by rupture pressure disc，When lithium battery casing selects aluminum hull，Adhesive layer selects low melting point aluminium alloy layer，Rupture pressure disc can select aluminum metal layer，Can also preferably mutual clad aluminum metal level and the rupture pressure disc 6 of nickel metal layer，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 low melting point aluminium alloy layer melts，Bond strength between same metal is high，When avoiding laser welding and ultrasonic bonding, lithium battery casing and rupture pressure disc weld insecure problem，Good sealing effect，Improve the stability of anti-explosion valve structure，Low melting point aluminium alloy selects 4045、4047、4A13 etc. four line aluminium alloy.
These are only explanation embodiment of the present utility model; it is not limited to this utility model, for a person skilled in the art, all within spirit of the present utility model and principle; the any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (6)
1. the anti-explosion valve structure of a lithium battery, including lithium battery casing, described lithium battery casing includes explosion-proof valve district, it is characterized in that: in described explosion-proof valve district, be compounded with adhesive layer, in described explosion-proof valve district, be provided with the through hole being each passed through described lithium battery casing and adhesive layer, in described explosion-proof valve district, the upper end of described adhesive layer be coated with rupture pressure disc.
The anti-explosion valve structure of a kind of lithium battery the most according to claim 1, it is characterised in that: described through hole is at least provided with two.
The anti-explosion valve structure of a kind of lithium battery the most according to claim 1, it is characterised in that: described lithium battery casing is Al-alloy casing, and described adhesive layer is low melting point aluminium alloy layer.
The anti-explosion valve structure of a kind of lithium battery the most according to claim 3, it is characterised in that: described rupture pressure disc includes aluminum metal layer.
The anti-explosion valve structure of a kind of lithium battery the most according to claim 3, it is characterised in that: described rupture pressure disc includes mutual clad aluminum metal level and nickel metal layer.
The anti-explosion valve structure of a kind of lithium battery the most according to claim 1, it is characterised in that: described lithium battery casing is steel metal shell, and described adhesive layer is low melting point steel metal, and described rupture pressure disc includes steel metal level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620092641.9U CN205488247U (en) | 2016-01-31 | 2016-01-31 | Explosion -proof valve structure of lithium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620092641.9U CN205488247U (en) | 2016-01-31 | 2016-01-31 | Explosion -proof valve structure of lithium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205488247U true CN205488247U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620092641.9U Active CN205488247U (en) | 2016-01-31 | 2016-01-31 | Explosion -proof valve structure of lithium cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205488247U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552253A (en) * | 2016-01-31 | 2016-05-04 | 谢振华 | Explosion-proof valve structure for lithium battery and processing technology for explosion-proof valve structure |
| CN111430600A (en) * | 2019-01-09 | 2020-07-17 | 比亚迪股份有限公司 | Monomer battery, power battery package and electric motor car |
-
2016
- 2016-01-31 CN CN201620092641.9U patent/CN205488247U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552253A (en) * | 2016-01-31 | 2016-05-04 | 谢振华 | Explosion-proof valve structure for lithium battery and processing technology for explosion-proof valve structure |
| CN111430600A (en) * | 2019-01-09 | 2020-07-17 | 比亚迪股份有限公司 | Monomer battery, power battery package and electric motor car |
| CN114512760A (en) * | 2019-01-09 | 2022-05-17 | 比亚迪股份有限公司 | Monomer battery, power battery package and electric motor car |
| CN114512760B (en) * | 2019-01-09 | 2024-01-09 | 比亚迪股份有限公司 | Single battery, power battery pack and electric vehicle |
| US11955651B2 (en) | 2019-01-09 | 2024-04-09 | Byd Company Limited | Power battery pack and electric vehicle |
| US12068492B2 (en) | 2019-01-09 | 2024-08-20 | Byd Company Limited | Power battery pack and electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160906 Address after: Dongshanzui dingshuzhen Yixing city 214174 Jiangsu city of Wuxi Province Patentee after: Yixing Huiyuan composite material Co., Ltd. Address before: Dongshanzui dingshuzhen Yixing city 214174 Jiangsu city of Wuxi Province Patentee before: Xie Zhenhua |