CN100423324C - Explosion protection for batteries - Google Patents
Explosion protection for batteries Download PDFInfo
- Publication number
- CN100423324C CN100423324C CNB2006100414549A CN200610041454A CN100423324C CN 100423324 C CN100423324 C CN 100423324C CN B2006100414549 A CNB2006100414549 A CN B2006100414549A CN 200610041454 A CN200610041454 A CN 200610041454A CN 100423324 C CN100423324 C CN 100423324C
- Authority
- CN
- China
- Prior art keywords
- explosion
- hotmelt
- hole
- rete
- cover board
- 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.)
- Active
Links
- 238000004880 explosion Methods 0.000 title claims abstract description 19
- 239000011888 foil Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000007731 hot pressing Methods 0.000 claims abstract description 4
- 239000012943 hotmelt Substances 0.000 claims description 33
- 238000005254 chromizing Methods 0.000 claims description 12
- 239000005030 aluminium foil Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract 5
- 230000001070 adhesive effect Effects 0.000 abstract 5
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Anti-explosion hole is prepared on basal body of battery cover board. Anti-explosion aluminum foil covers the hole. Chromaking membranous layer is formed around of anti-explosion hole in inner side of the basal body of battery cover board. Heat melted membranous layer of adhesive is setup between anti-explosion aluminum foil and chromaking membranous layer. Using hot pressing procedure solidifies aluminum foil, adhesive, and basal body of battery as integrated body. A hole is prepared on heat melted membranous layer of adhesive positioned at anti-explosion hole. Adhesive bonding is firm, and consistent quality is ensured. The said hole on membranous layer of adhesive ensures that anti-explosion pressure is only dependent on aluminum foil and its thickness, and is not related to the layer of adhesive. The anti-explosion pressure can be controlled in 1kg range. Advantages are: reducing cost of production, and guaranteeing safety and reliability.
Description
Technical field
The present invention relates to a kind of battery anti-explosion technology, particularly a kind of at the explosion-protection equipment that is provided with on the battery metal box hat that contains the electrolyte that flows.
Background technology
At the lithium battery that contains the electrolyte that flows, its electrolyte has severe corrosive, dissolves swellability by force, very responsive to airborne moisture, oxygen etc., need tight internal and external environment of isolating battery, particularly Nei Bu chemical substance is not good at because of manufacture process control or improper high temperature and a large amount of gas of producing of use, cause inside battery moment generation high pressure, break through metallic steel body (the metallic steel body is meant the metal box hat of steel, aluminium and alloy thereof) and produce blast, have very big danger.So this class battery all must have explosion precaution.Explosion-proof technology of the prior art has following several: 1, be a certain position mechanical score or line or the circle impression at the metallic steel body, accurate technical methods such as employing laser engraving, when in the steel body, producing certain pressure, there is the place of indentation or line or circle impression at first to break, thereby avoids the steel body under high pressure to explode.The disadvantage of this technology is that explosion-proof pressure is big, the explosion-proof pressure shakiness, and fluctuation range is bigger.The 2nd, adopt valve seal explosion-proof, such designs complicated, and it is big to take up room, the cost height, commercialization is worth very little.The 3rd, on battery cover board, have explosionproof hole, be stamped rupture pressure disc on the explosionproof hole, Chinese patent as CN200420094093.0, it is to utilize aluminum plastic film to be pasted on the explosionproof hole, its weak point is that electrolyte destroys the bonding plane on bonding plane and the middle aluminium foil of rupture pressure disc both sides easily, interlayer is separated, thereby do not have the function of tight seal, influence battery life, particularly the plastics on aluminium foil both sides have very big retractility, can cause explosion-proof pressure to strengthen, and unstable, reduce the reliability of its use greatly.Be direct or indirect weld metal paper tinsel on explosionproof hole in addition, in the patent as CN01109136.3, be to adopt soldering tech, adopt welding methods such as Laser Welding, supersonic welding in addition, its weak point is to be difficult to guarantee the consistency of the quality of welding, in welding process, can cause major injury to explosion-proof metal forming, thereby can't guarantee the stability of explosion-proof pressure.
Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, and it is stable to have proposed a kind of explosion-proof pressure, safe and reliable explosion protection for batteries.
The technical problem to be solved in the present invention is achieved through the following technical solutions, a kind of explosion protection for batteries, it has explosionproof hole on the battery cover board matrix, be stamped explosion-proof aluminum-foil on the explosionproof hole, be characterized in: around the medial surface explosionproof hole of battery cover board matrix, handle the formation chromizing film layer through chromaking, between explosion-proof aluminum-foil and chromizing film layer, be provided with the hotmelt rete, explosion-proof aluminum-foil, hotmelt rete and battery cover board three are one by hot-press solidifying, and the hotmelt rete that is positioned at the explosionproof hole place is provided with the hole.
The technical problem to be solved in the present invention can also come by the following technical programs to realize that further described hotmelt rete is maleic anhydride modified polyhexene layer or maleic anhydride modified polypropylene layer that its thickness is 20～100 μ m.
The technical problem to be solved in the present invention can also come by the following technical programs further to realize that the chromizing film layer of handling formation through chromaking around the explosionproof hole is than the big at least 0.5mm of explosionproof hole periphery, and chromizing film layer thickness is 0.2～2 μ m.
The technical problem to be solved in the present invention can also come further to realize by the following technical programs, explosion-proof aluminum-foil, hotmelt rete and battery cover board three hot-press solidifying process: earlier the hotmelt rete is punched, the hole of hotmelt rete and the explosionproof hole of battery cover board are aligned, repave aluminium foil and carry out hot-forming.
The technical problem to be solved in the present invention can also come further to realize by the following technical programs, explosion-proof aluminum-foil, hotmelt rete and battery cover board three hot-press solidifying process: earlier with hotmelt rete and the pre-hot pressing of battery cover board, to cover again at the hotmelt film at battery cover board explosionproof hole place and go out the hole, and then hot-forming with aluminium foil.
The present invention compared with prior art, battery cover board is hot-forming by the hotmelt rete with aluminium foil again after chromaking is handled, it is bonding firmly, can guarantee the consistency of its quality in high volume production process.The hotmelt rete that is positioned at the explosionproof hole place in addition is provided with the hole, and its explosion-proof pressure is just decided by the material of employing aluminium foil and the thickness of aluminium foil like this, thereby realizes the stable of explosion-proof pressure, can control its explosion-proof pressure within ± 1kg scope.The present invention can significantly reduce the production cost of battery industry, guarantees safe and reliable in the use to promote the competitiveness of domestic battery industry in the international market.
Embodiment
A kind of explosion protection for batteries, it has explosionproof hole on the battery cover board matrix, be stamped explosion-proof aluminum-foil on the explosionproof hole, around the medial surface explosionproof hole of battery cover board matrix, handle the formation chromizing film layer through chromaking, the chromizing film layer of handling formation through chromaking around the explosionproof hole is than the big at least 0.5mm of explosionproof hole periphery, and chromizing film layer thickness is 0.2～2 μ m.Be provided with the hotmelt rete between explosion-proof aluminum-foil and chromizing film layer, explosion-proof aluminum-foil, hotmelt rete and battery cover board three are one by hot-press solidifying, and the hotmelt rete that is positioned at the explosionproof hole place is provided with the hole.Described hotmelt rete is maleic anhydride modified polyhexene layer or maleic anhydride modified polypropylene layer, and its thickness is 20～100 μ m.
Explosion-proof aluminum-foil, hotmelt rete and battery cover board three hot-press solidifying process: with the punching of hotmelt rete, the hole of hotmelt rete and the explosionproof hole of battery cover board are aligned earlier, repave aluminium foil and carry out hot-forming.
Explosion-proof aluminum-foil, hotmelt rete and battery cover board three hot-press solidifying process: first hotmelt rete and the pre-hot pressing of battery cover board, will cover again at the hotmelt film at battery cover board explosionproof hole place and go out the hole, and then hot-forming with aluminium foil.
The invention discloses two kinds of hot-press solidifying processes, also can adopt other method, but will guarantee that the explosion-proof aluminum-foil that is positioned at the explosionproof hole place is not covered by the hotmelt rete, leave the hole, its hole can be littler than explosionproof hole, also can be the same with explosionproof hole big.
Claims (5)
1. explosion protection for batteries, it has explosionproof hole on the battery cover board matrix, be stamped explosion-proof aluminum-foil on the explosionproof hole, it is characterized in that: around the medial surface explosionproof hole of battery cover board matrix, handle the formation chromizing film layer through chromaking, between explosion-proof aluminum-foil and chromizing film layer, be provided with the hotmelt rete, explosion-proof aluminum-foil, hotmelt rete and battery cover board three are one by hot-press solidifying, and the hotmelt rete that is positioned at the explosionproof hole place is provided with the hole.
2. explosion protection for batteries according to claim 1 is characterized in that: described hotmelt rete is maleic anhydride modified polyhexene layer or maleic anhydride modified polypropylene layer, and its thickness is 20～100 μ m.
3. explosion protection for batteries according to claim 1 is characterized in that: the chromizing film layer of handling formation through chromaking around the explosionproof hole is than the big at least 0.5mm of explosionproof hole periphery, and chromizing film layer thickness is 0.2～2 μ m.
4. explosion protection for batteries according to claim 1, it is characterized in that, explosion-proof aluminum-foil, hotmelt rete and battery cover board three hot-press solidifying process are: earlier the hotmelt rete is punched, the hole of hotmelt rete and the explosionproof hole of battery cover board are aligned, repave aluminium foil and carry out hot-forming.
5. explosion protection for batteries according to claim 1, it is characterized in that, explosion-proof aluminum-foil, hotmelt rete and battery cover board three hot-press solidifying process are: earlier with hotmelt rete and the pre-hot pressing of battery cover board, to cover again at the hotmelt film at battery cover board explosionproof hole place and go out the hole, and then hot-forming with aluminium foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100414549A CN100423324C (en) | 2006-09-04 | 2006-09-04 | Explosion protection for batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100414549A CN100423324C (en) | 2006-09-04 | 2006-09-04 | Explosion protection for batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1917254A CN1917254A (en) | 2007-02-21 |
| CN100423324C true CN100423324C (en) | 2008-10-01 |
Family
ID=37738180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100414549A Active CN100423324C (en) | 2006-09-04 | 2006-09-04 | Explosion protection for batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100423324C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638211B (en) * | 2015-02-09 | 2017-01-18 | 昆山市信克德精密五金塑胶有限公司 | Gluing process of battery cell end cover explosion-proof membrane |
| CN105216393A (en) * | 2015-09-21 | 2016-01-06 | 镇江市天创自动化科技有限公司 | The explosion-proof aluminium aluminium composite material of aluminum-shell battery and manufacture method thereof and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129195A (en) * | 1995-10-31 | 1997-05-16 | Matsushita Electric Ind Co Ltd | Explosion-proof sealing plate |
| CN2561100Y (en) * | 2002-07-30 | 2003-07-16 | 中山大学 | Safety end cap of lithium ion cell |
| CN2598153Y (en) * | 2003-01-07 | 2004-01-07 | 连云港中金医药包装有限公司 | Aluminium-plastic composite film for battery explosion-proof |
| CN2754216Y (en) * | 2004-10-14 | 2006-01-25 | 广州市鹏辉电池有限公司 | Lithium battery and structure thereof |
-
2006
- 2006-09-04 CN CNB2006100414549A patent/CN100423324C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129195A (en) * | 1995-10-31 | 1997-05-16 | Matsushita Electric Ind Co Ltd | Explosion-proof sealing plate |
| CN2561100Y (en) * | 2002-07-30 | 2003-07-16 | 中山大学 | Safety end cap of lithium ion cell |
| CN2598153Y (en) * | 2003-01-07 | 2004-01-07 | 连云港中金医药包装有限公司 | Aluminium-plastic composite film for battery explosion-proof |
| CN2754216Y (en) * | 2004-10-14 | 2006-01-25 | 广州市鹏辉电池有限公司 | Lithium battery and structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1917254A (en) | 2007-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180927 Address after: 222000 Lianyungang economic and Technological Development Zone, Lianyungang, Jiangsu, 8 Patentee after: LIANYUNGANG DE FORCE LETTER OF ELECTRONIC SCIENCE AND TECHNOLOGY CO. Address before: 222000 Jiangsu Lianyungang Lianyun Development Zone No. 6, Hao Sheng solar energy Co., Ltd. Patentee before: Xu Liqiu |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 222000 Lianyungang economic and Technological Development Zone, Lianyungang, Jiangsu, 8 Patentee after: Jiangsu delixin Electronic Technology Co.,Ltd. Address before: 222000 Lianyungang economic and Technological Development Zone, Lianyungang, Jiangsu, 8 Patentee before: LIANYUNGANG DELIXIN ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |