CN106972121A - A kind of dynamic lithium battery safety anti-explosive cover plate - Google Patents
A kind of dynamic lithium battery safety anti-explosive cover plate Download PDFInfo
- Publication number
- CN106972121A CN106972121A CN201710360653.4A CN201710360653A CN106972121A CN 106972121 A CN106972121 A CN 106972121A CN 201710360653 A CN201710360653 A CN 201710360653A CN 106972121 A CN106972121 A CN 106972121A
- Authority
- CN
- China
- Prior art keywords
- explosion
- cover plate
- proof
- proof valve
- lithium battery
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 16
- 239000002360 explosive Substances 0.000 title claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000003466 welding Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000032953 Device battery issue Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
- H01M50/147—Lids or covers
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
- H01M50/317—Re-sealable arrangements
-
- 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
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- 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
Abstract
The present invention relates to a kind of dynamic lithium battery safety anti-explosive cover plate, including offer the cover plate substrate of explosionproof hole, the explosion-proof valve being installed through in explosionproof hole and the Positive Poles being sequentially arranged on cover plate substrate and negative pole pole；The explosion-proof valve includes hollow explosion-proof valve body, the valve cap plate being arranged at explosion-proof valve body upper end open, the explosion-proof diaphragm being arranged at explosion-proof valve body lower ending opening, the spring for being located at the diaphragm seal in explosion-proof valve body interior stage casing and being connected between valve cap plate and diaphragm seal；Through hole is offered on the valve cap plate.The present invention both may insure the sealing of battery, and the application risk of lithium battery can be reduced again, with rational in infrastructure, safe, good airproof performance, make simple the features such as.
Description
Technical field
The present invention relates to technical field of lithium ion, and in particular to a kind of dynamic lithium battery safety anti-explosive cover plate.
Background technology
Explosion-proof covering board is used on lithium ion battery, the security performance of battery can be improved.On existing lithium ion battery
Explosion-proof covering board includes being arranged on the substrate at the top of lithium ion battery, and the substrate is provided with an explosionproof hole, typically all passes through welding
Rupture pressure disc is sealed explosionproof hole by method, and its rupture pressure disc majority uses copper foil or aluminium flake.The lithium ion battery is using process
In, when battery is overcharged or be short-circuit, inside battery can produce gas, battery air-pressure rise, when air pressure is set more than rupture pressure disc
After pressure, rupture pressure disc rupture, electric pool gas and energy release reduces the risk of battery explosion.But, after rupture pressure disc rupture,
Inside battery is turned on extraneous, and the oxygen and moisture in air are easily accessible battery, cause powered cathode pole piece to aoxidize, make electricity
Pond temperature rise adds battery thermal runaway risk.
The content of the invention
It is an object of the invention to provide a kind of dynamic lithium battery safety anti-explosive cover plate, the explosion-proof covering board can solve the problem that existing
It is not enough present in technology, with rational in infrastructure, safe, good airproof performance, make simple the features such as.
To achieve the above object, present invention employs following technical scheme：
A kind of dynamic lithium battery safety anti-explosive cover plate, including offer the cover plate substrate of explosionproof hole, be installed through in explosionproof hole
Explosion-proof valve and the Positive Poles that are sequentially arranged on cover plate substrate and negative pole pole；The explosion-proof valve includes hollow explosion-proof
Valve body, the valve cap plate being arranged at explosion-proof valve body upper end open, the rupture pressure disc being arranged at explosion-proof valve body lower ending opening
Piece, the diaphragm seal for being located at explosion-proof valve body interior stage casing and the spring being connected between valve cap plate and diaphragm seal；The bonnet
Through hole is offered on piece.
Further, offered on the cover plate substrate and be provided with liquid injection port cap liner above liquid injection port, and liquid injection port.
Further, the Positive Poles and negative pole pole are arranged on cover plate substrate by rivet respectively.
Further, the bottom of the cover plate substrate is provided with insulating part.
Further, the cover plate substrate and explosion-proof valve body use aluminum alloy material.
Further, the explosion-proof diaphragm uses aluminium flake.
Further, the diaphragm seal uses sheet rubber.
From above technical scheme, the explosion-proof valve that the present invention is used possesses double protection structures, when inside battery air pressure
When too high, explosion-proof rupture of diaphragm, gas is entered in explosion-proof valve, is washed diaphragm seal open and is carried out pressure release.When gas is on valve cap plate
After through hole releases, battery air-pressure recovers normal, now, compresses diaphragm seal downwards under the elastic force effect of spring, can prevent
Outside air is entered in battery, so as to effectively prevent negative pole oxidation by air, battery anti-explosion valve can be avoided to be caused after opening
Battery spontaneous combustion risk.The present invention both may insure the sealing of battery, the application risk of lithium battery can be reduced again, with knot
Structure is reasonable, safe, good airproof performance, make it is simple the features such as.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 is Fig. 2 A-A to sectional view；
Fig. 4 is the top view of explosion-proof valve；
Fig. 5 is Fig. 4 B-B direction sectional view.
Wherein：
1st, cover plate substrate, 2, Positive Poles, 3, the rivet for fixing Positive Poles, 4, explosion-proof valve, 5, negative pole pole, 6, be used for
The rivet of fixed negative pole pole, 7, liquid injection port cap liner, 8, insulating part, 9, explosion-proof diaphragm, 10, diaphragm seal, 11, explosion-proof valve master
Body, 12, valve cap plate, 13, spring, 14, through hole.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
A kind of dynamic lithium battery safety anti-explosive cover plate as shown in Figure 1-Figure 3, including offer the cover plate substrate 1 of explosionproof hole, pass through
Wear the explosion-proof valve 4 in explosionproof hole and the Positive Poles 2 being sequentially arranged on cover plate substrate 1 and negative pole pole 5.It is described
Explosion-proof valve 4 is by laser welding at explosionproof hole on cover plate substrate 1.
Further, liquid injection port is offered on the cover plate substrate 1, and liquid injection port top is provided with aluminium alloy punching press and is made
Liquid injection port cap liner 7.The liquid injection port cap liner 7 is by laser welding on cover plate substrate 1.
Further, the Positive Poles 2 and negative pole pole 5 are respectively by for fixing the rivet 3 of Positive Poles and using
It is arranged in the rivet 6 of fixed negative pole pole on cover plate substrate 1.
Further, the bottom of the cover plate substrate 1 is provided with insulating part 8.The insulating part, for fixing core, is prevented
Occurs short circuit with cover plate substrate.The insulating part uses PP materials.
As shown in Figure 4 and Figure 5, the explosion-proof valve 4 includes hollow explosion-proof valve body 11, is arranged on explosion-proof valve body 11
Valve cap plate 12 at end opening, the explosion-proof diaphragm 9 being arranged at the explosion-proof lower ending opening of valve body 11, it is located in explosion-proof valve body 11
The diaphragm seal 10 in portion stage casing and the spring 13 being connected between valve cap plate 12 and diaphragm seal 10.Offered on the valve cap plate 12
Through hole 14.The valve cap plate 12 is fixed at the upper end open of explosion-proof valve body 11 using laser welding or fluid sealant.It is described anti-
The quick-fried top half internal diameter of valve body 11 is more than the latter half internal diameter, and diaphragm seal 10 is located at two parts connection about 11 of explosion-proof valve body
On the step surface at place, and it is sealed in by the compression of spring 13 in compressive state between the top and the bottom of explosion-proof valve body 11.
The explosion-proof diaphragm 9 is using laser welding at the lower ending opening of explosion-proof valve body 11, it can be ensured that the sealing of battery.Sealing
The Opening pressure of piece 10 can adjust, and its Opening pressure is less than the burst pressure of explosion-proof diaphragm 9.The explosion-proof valve uses rupture pressure disc
The diaphragm seal of piece and spring compression carries out duplicate protection, can both ensure after explosion-proof rupture of diaphragm that battery can be with quick pressure releasing, again
Extraneous air after rupture can be prevented to enter in battery, the security after battery pressure release is improved.
It is preferred that, the cover plate substrate 1, Positive Poles 2, negative pole pole 5, rivet, liquid injection port cap liner 7, explosion-proof valve master
Body 11 and explosion-proof diaphragm 9 are made of aluminum alloy material punching press.
The explosion-proof diaphragm 9 is aluminium flake, and its thickness can be usually arranged as 0.8- according to valve opening air pressure adjustment, its rupture strength
1.2MPa.The laser welding of explosion-proof diaphragm 9 is on explosion-proof valve body 11, it is ensured that battery sealing-performance.The diaphragm seal 10
For sheet rubber, on the step surface that explosion-proof valve body 11 is assemblied in using fastening spring 13.The startup pressure of diaphragm seal is burst disk
The 20%-30% of pressure, it is 0.2MPa generally to start pressure.The valve cap plate is annular, and centre offers through hole, using Laser Welding
Connect or glue is fixed on explosion-proof valve body, on the one hand for fixing spring, being on the other hand that gas is discouraged by through hole provides logical
Road.
When explosion-proof valve 4 is processed, diaphragm seal 9, spring 13 are assemblied in explosion-proof valve body 11 first, then valve cap plate is installed
12, and fixed using laser welding or glue, finally using Laser Welding by the explosion-proof laser welding of diaphragm 9 on explosion-proof valve body 11.
The explosion-proof diaphragm 9 of laser welding can ensure the sealing and uniformity of inside battery, when the rise of inside battery air pressure, more than anti-
During the setting pressure of quick-fried diaphragm 9, explosion-proof diaphragm 9 ruptures, and gas enters the inner chamber of explosion-proof valve 4, because diaphragm seal 10 starts pressure
Low, gas can wash the pressure release of diaphragm seal 10 open, and after cell pressure reduction, diaphragm seal 10 is compressed sealing by spring 13, prevents air from entering
Enter, induce further thermal runaway.The explosion-proof diaphragm 9 of Laser Welding can meet seal request reliably and with long-term, spring compression it is close
Mounting 10 has one-way conduction characteristic, and can meet the sealing scrapped after the explosion-proof rupture of diaphragm 9 battery failure to battery maintenance will
Ask, it is to avoid air, which enters, induces dangerous.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
In various modifications and improvement that case is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (7)
1. a kind of dynamic lithium battery safety anti-explosive cover plate, it is characterised in that：Including offering the cover plate substrate of explosionproof hole, through peace
Explosion-proof valve in explosionproof hole and the Positive Poles being sequentially arranged on cover plate substrate and negative pole pole；The explosion-proof valve bag
Hollow explosion-proof valve body, the valve cap plate being arranged at explosion-proof valve body upper end open are included, explosion-proof valve body lower end is arranged on and opens
Explosion-proof diaphragm, the bullet that is located at the diaphragm seal in explosion-proof valve body interior stage casing and is connected between valve cap plate and diaphragm seal at mouthful
Spring；Through hole is offered on the valve cap plate.
2. a kind of dynamic lithium battery safety anti-explosive cover plate according to claim 1, it is characterised in that：On the cover plate substrate
Offer and be provided with liquid injection port cap liner above liquid injection port, and liquid injection port.
3. a kind of dynamic lithium battery safety anti-explosive cover plate according to claim 1, it is characterised in that：The Positive Poles and
Negative pole pole is arranged on cover plate substrate by rivet respectively.
4. a kind of dynamic lithium battery safety anti-explosive cover plate according to claim 1, it is characterised in that：The cover plate substrate
Bottom is provided with insulating part.
5. a kind of dynamic lithium battery safety anti-explosive cover plate according to claim 1, it is characterised in that：The cover plate substrate and
Explosion-proof valve body uses aluminum alloy material.
6. a kind of dynamic lithium battery safety anti-explosive cover plate according to claim 1, it is characterised in that：The explosion-proof diaphragm is adopted
Use aluminium flake.
7. a kind of dynamic lithium battery safety anti-explosive cover plate according to claim 1, it is characterised in that：The diaphragm seal is used
Sheet rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360653.4A CN106972121A (en) | 2017-05-21 | 2017-05-21 | A kind of dynamic lithium battery safety anti-explosive cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360653.4A CN106972121A (en) | 2017-05-21 | 2017-05-21 | A kind of dynamic lithium battery safety anti-explosive cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106972121A true CN106972121A (en) | 2017-07-21 |
Family
ID=59326732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710360653.4A Pending CN106972121A (en) | 2017-05-21 | 2017-05-21 | A kind of dynamic lithium battery safety anti-explosive cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106972121A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428018A (en) * | 2017-09-03 | 2019-03-05 | 湖州南浔遨优电池有限公司 | A kind of lithium battery using Novel pressure relief device |
| CN109638180A (en) * | 2018-11-14 | 2019-04-16 | 庐江力翔电池科技有限责任公司 | A kind of rectangle large capacity anode is weak to lead lithium battery top cap structure |
| CN109860447A (en) * | 2018-11-14 | 2019-06-07 | 庐江力翔电池科技有限责任公司 | A kind of L-type connection sheet dipole column lithium battery cover plate |
| CN114883739A (en) * | 2022-05-20 | 2022-08-09 | 天能新能源(湖州)有限公司 | Lithium battery top cover |
| WO2023050080A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electric device, and method and device for manufacturing battery cell |
| WO2024036534A1 (en) * | 2022-08-17 | 2024-02-22 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electric device |
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|---|---|---|---|---|
| JP2001283809A (en) * | 2000-03-30 | 2001-10-12 | Sanyo Electric Co Ltd | Sealed alkaline battery |
| CN200983378Y (en) * | 2006-12-15 | 2007-11-28 | 比亚迪股份有限公司 | A secure valve |
| CN103474598A (en) * | 2012-06-08 | 2013-12-25 | 苏州宝时得电动工具有限公司 | Battery |
| CN105720218A (en) * | 2016-04-15 | 2016-06-29 | 合肥国轩高科动力能源有限公司 | Anti-overcharging battery cover plate |
-
2017
- 2017-05-21 CN CN201710360653.4A patent/CN106972121A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001283809A (en) * | 2000-03-30 | 2001-10-12 | Sanyo Electric Co Ltd | Sealed alkaline battery |
| CN200983378Y (en) * | 2006-12-15 | 2007-11-28 | 比亚迪股份有限公司 | A secure valve |
| CN103474598A (en) * | 2012-06-08 | 2013-12-25 | 苏州宝时得电动工具有限公司 | Battery |
| CN105720218A (en) * | 2016-04-15 | 2016-06-29 | 合肥国轩高科动力能源有限公司 | Anti-overcharging battery cover plate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428018A (en) * | 2017-09-03 | 2019-03-05 | 湖州南浔遨优电池有限公司 | A kind of lithium battery using Novel pressure relief device |
| CN109638180A (en) * | 2018-11-14 | 2019-04-16 | 庐江力翔电池科技有限责任公司 | A kind of rectangle large capacity anode is weak to lead lithium battery top cap structure |
| CN109860447A (en) * | 2018-11-14 | 2019-06-07 | 庐江力翔电池科技有限责任公司 | A kind of L-type connection sheet dipole column lithium battery cover plate |
| WO2023050080A1 (en) * | 2021-09-28 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electric device, and method and device for manufacturing battery cell |
| CN114883739A (en) * | 2022-05-20 | 2022-08-09 | 天能新能源(湖州)有限公司 | Lithium battery top cover |
| WO2024036534A1 (en) * | 2022-08-17 | 2024-02-22 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electric device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |