CN208873783U - A kind of safe anti-explosion lithium battery cap - Google Patents
A kind of safe anti-explosion lithium battery cap Download PDFInfo
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- CN208873783U CN208873783U CN201822033124.6U CN201822033124U CN208873783U CN 208873783 U CN208873783 U CN 208873783U CN 201822033124 U CN201822033124 U CN 201822033124U CN 208873783 U CN208873783 U CN 208873783U
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- ring
- explosion
- top cover
- lithium battery
- annular
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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 utility model discloses a kind of safe anti-explosion lithium battery caps, including sealing ring, hole plate washer, explosion rupture disk, orifice plate and top cover, the sealing ring includes sealed cylinder, sealed cylinder upper end is connected with sealed end bezel ring, by connecting ring, the outer circumferential walls of connection ring are recessed inwardly setting, sealed end bezel ring, is centrally formed with end cap opening, the inner wall of the sealed cylinder is provided with convex annular looping, the inner wall of connection ring is provided with the annular contradicted with the upper surface of explosion rupture disk and contradicts circle, convex annular looping, annular contradicts circle and the inner wall of sealing ring forms the annular mounting groove chamber for surrounding explosion rupture disk outer circumferential walls, outer circumferential walls of the connection ring and annular mounting groove is intracavitary is coated with sealant；The explosion rupture disk lower end surface is coated with top cover.The reasonable structural arrangement of the utility model, assembling cooperation is convenient, and the sealing effect of lithium battery is effectively ensured, avoids the occurrence of the leakage of electrolyte, has good explosion-proof performance.
Description
Technical field
The utility model relates to lithium battery cap technical field, specially a kind of safe anti-explosion lithium battery cap.
Background technique
It by lithium metal or lithium alloy is negative electrode material, using the battery of non-aqueous electrolytic solution that " lithium battery ", which is a kind of,.
Lithium metal battery in 1912 is proposed and is studied by Gilbert N. Lewis earliest.When the 1970s, M. S.
Whittingham is proposed and the lithium ion battery that begins one's study.Since the chemical characteristic of lithium metal is very active, so that lithium metal
Processing is saved, is used, very high to environmental requirement.With the development of science and technology, present lithium battery has become mainstream.
The battery roll core and electrolyte that current lithium battery generally comprises shell, is set in the housing, the shell of lithium battery
Open end is generally sealed by battery cap, and battery roll core and electrolyte are then in the shell sealed by battery cap.
Existing lithium battery cap is easy to produce deformation in an assembling process, cause assembling after lithium battery sealing effect compared with
Difference, in addition, the security protection performance for how improving lithium battery while guaranteeing excellent sealing effect necessitates.
Utility model content
The purpose of this utility model is to provide a kind of safe anti-explosion lithium battery caps, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the utility model provides the following technical solutions:
A kind of safe anti-explosion lithium battery cap, including sealing ring, hole plate washer, explosion rupture disk, orifice plate and top cover, it is described
Sealing ring includes sealed cylinder, and sealed cylinder upper end is connected with sealed end bezel ring, by connecting ring, connects outside the circumference of ring
Wall is recessed inwardly setting, and sealed end bezel ring, is centrally formed with end cap opening, and the inner wall of the sealed cylinder is provided with annular protrusion
Circle, the inner wall for connecting ring are provided with the annular contradicted with the upper surface of explosion rupture disk and contradict circle, and convex annular looping, annular contradict circle
The annular mounting groove chamber for surrounding explosion rupture disk outer circumferential walls, the outer circumferential walls of the connection ring are formed with the inner wall of sealing ring
With annular mounting groove is intracavitary is coated with sealant；The explosion rupture disk lower end surface is coated with top cover, and the upper end of explosion rupture disk successively covers
Equipped with hole plate washer and orifice plate, the upper end of orifice plate is extended in end cap opening.
Preferably, the top cover includes the top cover ring of outer ring, and the inner ring of top cover ring passes through the top cover conical surface tilted down and connects
It is connected to top cover boss, is uniformly distributed on the top cover conical surface and is provided with multiple top cover bleeder ports.
Preferably, the explosion rupture disk includes the explosion-proof ring plate of outer ring, and the inner ring of explosion-proof ring plate is extended with protruding upward anti-
Quick-fried convex sheet, the upper surface and/or lower end surface of explosion-proof convex sheet offer fracture annular groove, the explosion-proof convex sheet shape being broken in annular groove
At explosion-proof inner sheet；The outer ring of the explosion-proof ring plate, which bends inwards, is extended with cladding ring side, coats and is formed in ring side for surrounding
The cladding annular groove of top cover ring outer circumferential walls.
Preferably, item connection, the weldering are symmetrically welded by one group between cladding ring side and the lower end surface of top cover ring
Narrow bars are continuously formed by stacking by least seven roundlet solder joint.
Preferably, the hole plate washer includes the washer ring plate contacted with blast ring piece upper surface, the inner ring of washer ring plate
It is extended with the washer cladding ring side for coating explosion-proof convex sheet outer circumferential walls.
Preferably, the orifice plate includes the orifice plate ring contacted with gasket rings piece upper surface, and the upper surface of orifice plate ring is prolonged
Stretch abacus piece, the upper surface of hole plate is provided centrally with the central channel for installing egative film, hole plate all around around center
Axis distribution is provided with multiple orifice plate bleeder ports.
Preferably, the top cover coating surface has a nickel coating, nickel coating with a thickness of 4~7 μm.
Compared with prior art, the utility model has the beneficial effects that the inner wall of sealed cylinder is provided with convex annular looping,
Connection ring inner wall be provided with the upper surface of explosion rupture disk contradict annular contradict enclose, convex annular looping, annular contradict circle and
The inner wall of sealing ring forms the annular mounting groove chamber for surrounding explosion rupture disk outer circumferential walls, the outer circumferential walls of the connection ring and
Annular mounting groove is intracavitary to be coated with sealant, installs explosion rupture disk using this structure and installs assembled lithium battery cap
Onto lithium battery, the sealing effect of lithium battery can effectively ensure that, avoid the occurrence of the leakage of electrolyte；When the gas of lithium battery interior
When pressing through big, the fracture annular groove of explosion-proof convex sheet be will crack, so that explosion-proof inner sheet is detached from explosion-proof convex sheet, air-flow can successively pass through
Orifice plate bleeder port and top cover bleeder port are uniformly discharged, and lithium battery is avoided to generate strong explosion；Top cover and orifice plate can effectively hinder
Explosion-proof inner sheet is kept off, explosion-proof inner sheet is avoided to splash out；Top cover coating surface has nickel coating, is conducive to the Corrosion Protection for improving top cover,
Extend the service life of lithium battery；Item connection is symmetrically welded by one group between cladding ring side and the lower end surface of top cover ring, it should
Welding item is continuously formed by stacking by least seven roundlet solder joint, it is ensured that and cladding ring side and top cover ring keep electrical contact performance well,
Also assembled afterwards convenient for subsequent cooperation.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram that safe anti-explosion lithium battery cap is looked up；
Fig. 2 is a kind of structural schematic diagram of safe anti-explosion lithium battery cap A-A section；
Fig. 3 is the structural schematic diagram that a kind of safe anti-explosion lithium battery cap is overlooked；
Fig. 4 is a kind of structural schematic diagram that safe anti-explosion lithium battery cap mesoporous plate washer is splitted；
Fig. 5 is the structural schematic diagram that explosion rupture disk is splitted in a kind of safe anti-explosion lithium battery cap；
Fig. 6 is a kind of structural schematic diagram that safe anti-explosion lithium battery cap aperture plate is splitted；
Fig. 7 is the structural schematic diagram that top cover is splitted in a kind of safe anti-explosion lithium battery cap.
In figure: 1- sealing ring, 11- sealed cylinder, 12- connection ring, 13- sealed end bezel ring, 14- end cap is open, 15- ring
Shape protrusion circle, 16- annular contradict circle, 17- annular mounting groove chamber, the hole 2- plate washer, 21- washer ring plate, 22- washer cladding ring
Side, 23- washer is open, 3- explosion rupture disk, the explosion-proof ring plate of 31-, the explosion-proof convex sheet of 32-, 321- fracture annular groove, the explosion-proof inner sheet of 322-,
33- cladding ring side, 34- cladding annular groove, 4- orifice plate, 41- orifice plate ring, 42- orifice plate bleeder port, the hole 43- plate, 44- central channel,
5- top cover, 51- top cover boss, 52- top cover ring, the 53- top cover conical surface, 54- top cover bleeder port, 6- weld item.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1~7 are please referred to, the utility model provides a kind of technical solution: a kind of safe anti-explosion lithium battery cap, including
Sealing ring 1, hole plate washer 2, explosion rupture disk 3, orifice plate 4 and top cover 5, the sealing ring 1 include sealed cylinder 11, sealed cylinder 11
Upper end is connected with sealed end bezel ring, 13 by connecting ring 12, and the outer circumferential walls of connection ring 12 are recessed inwardly setting, sealed end
Bezel ring, 13 is centrally formed with end cap opening 14, and the inner wall of the sealed cylinder 11 is provided with convex annular looping 15, connects ring 12
Inner wall be provided with the annular contradicted with the upper surface of explosion rupture disk 3 and contradict circle 16, convex annular looping 15, annular contradict circle 16 and close
The inner wall of seal 1 forms the annular mounting groove chamber 17 for surrounding 3 outer circumferential walls of explosion rupture disk, outside the circumference of the connection ring 12
Sealant is coated in wall and annular mounting groove chamber 17；3 lower end surface of explosion rupture disk is coated with top cover 5, the upper end of explosion rupture disk 3
It is successively set with abacus washer 2 and orifice plate 4, the upper end of orifice plate 4 extends in end cap opening 14.Explosion rupture disk is installed using this structure
3 and assembled lithium battery cap is installed on lithium battery, can effectively ensure that the sealing effect of lithium battery, avoid the occurrence of
The leakage of electrolyte.
The top cover 5 includes the top cover ring 52 of outer ring, and the inner ring of top cover ring 52 passes through the top cover conical surface 53 tilted down and connects
It is connected to top cover boss 51, is uniformly distributed on the top cover conical surface 53 and is provided with multiple top cover bleeder ports 54.
It may be preferred that the explosion rupture disk 3 includes the explosion-proof ring plate 31 of outer ring, the inner ring of explosion-proof ring plate 31 is extended with upward convex
Explosion-proof convex sheet 32 out, the upper surface and/or lower end surface of explosion-proof convex sheet 32 offer fracture annular groove 321, are broken annular groove 321
Interior explosion-proof convex sheet 32 forms explosion-proof inner sheet 322；The outer ring of the explosion-proof ring plate 31, which bends inwards, is extended with cladding ring side 33,
The cladding annular groove 34 for surrounding 52 outer circumferential walls of top cover ring is formed in cladding ring side 33.
When the air pressure of lithium battery interior is excessive, the fracture annular groove 321 of explosion-proof convex sheet 32 be will crack, so that explosion-proof inner sheet
322 are detached from explosion-proof convex sheet 32, and air-flow successively can uniformly be discharged by orifice plate bleeder port 42 and top cover bleeder port 54, avoid lithium electric
Pond generates strong explosion.
Wherein, the connection of item 6 is symmetrically welded by one group between cladding ring side 33 and the lower end surface of top cover ring 52, it should
Welding item 6 is continuously formed by stacking by least seven roundlet solder joint.Ensure to coat ring side 33 to be in electrical contact well with the holding of top cover ring 52
Performance assembles after going back convenient for subsequent cooperation.
The hole plate washer 2 includes the washer ring plate 21 with explosion-proof 31 upper end face contact of ring plate, the inner ring of washer ring plate 21
It is extended with the washer cladding ring side 22 for coating explosion-proof 32 outer circumferential walls of convex sheet, washer cladding ring side 22 is centrally formed for explosion-proof
The washer opening 23 that inner sheet 322 passes through.
Wherein, the orifice plate 4 includes the orifice plate ring 41 with 21 upper end face contact of washer ring plate, the upper end of orifice plate ring 41
Face extends abacus piece 43, and the upper surface of hole plate 43 is provided centrally with the central channel 44 for installing egative film, hole plate 43
Central axis distribution is all around provided with multiple orifice plate bleeder ports 42.
5 coating surface of top cover has a nickel coating, nickel coating with a thickness of 4~7 μm, be conducive to the anti-corrosion for improving top cover 5
Corrosion energy extends the service life of lithium battery.Finished product resistance value≤0.5m Ω of the utility model safe anti-explosion lithium battery cap.
Working principle: the inner wall of sealed cylinder 11 is provided with convex annular looping 15, the inner wall of connection ring 12 be provided with
The annular that the upper surface of explosion rupture disk 3 contradicts contradicts circle 16, and convex annular looping 15, annular contradict the inner wall shape of circle 16 and sealing ring 1
At the annular mounting groove chamber 17 for surrounding 3 outer circumferential walls of explosion rupture disk, the outer circumferential walls and annular installation of the connection ring 12
It is coated with sealant in vallecular cavity 17, explosion rupture disk 3 is installed using this structure and assembled lithium battery cap is installed to lithium
On battery, the sealing effect of lithium battery can effectively ensure that, avoid the occurrence of the leakage of electrolyte；When the air pressure of lithium battery interior
When big, the fracture annular groove 321 of explosion-proof convex sheet 32 be will crack, so that explosion-proof inner sheet 322 is detached from explosion-proof convex sheet 32, air-flow can be according to
It is secondary to be uniformly discharged by orifice plate bleeder port 42 and top cover bleeder port 54, avoid lithium battery from generating strong explosion；Top cover 5 and orifice plate
4 can effectively stop explosion-proof inner sheet 322, and explosion-proof inner sheet 322 is avoided to splash out；The reasonable structural arrangement of the utility model, group assembly
It is convenient to close, and the sealing effect of lithium battery is effectively ensured, avoids the occurrence of the leakage of electrolyte, has good explosion-proof performance.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of safe anti-explosion lithium battery cap, it is characterised in that: including sealing ring (1), hole plate washer (2), explosion rupture disk
(3), orifice plate (4) and top cover (5), the sealing ring (1) include sealed cylinder (11), and sealed cylinder (11) upper end passes through connection
Ring (12) is connected with sealed end bezel ring, (13), and the outer circumferential walls of connection ring (12) are recessed inwardly setting, sealed end bezel ring,
(13) it is open (14) to be centrally formed with end cap, the inner wall of the sealed cylinder (11) is provided with convex annular looping (15), connection ring
The inner wall of circle (12) is provided with the annular contradicted with the upper surface of explosion rupture disk (3) and contradicts circle (16), convex annular looping (15), annular
The inner wall for contradicting circle (16) and sealing ring (1) forms the annular mounting groove chamber (17) for surrounding explosion rupture disk (3) outer circumferential walls, institute
It states in the outer circumferential walls and annular mounting groove chamber (17) of connection ring (12) and is coated with sealant；Explosion rupture disk (3) lower end
Bread is covered with top cover (5), and the upper end of explosion rupture disk (3) is successively set with abacus washer (2) and orifice plate (4), and the upper end of orifice plate (4) is prolonged
It extends in end cap open (14).
2. a kind of safe anti-explosion lithium battery cap according to claim 1, it is characterised in that: the top cover (5) includes
The top cover ring (52) of outer ring, the inner ring of top cover ring (52) pass through the top cover conical surface (53) tilted down and are connected with top cover boss
(51), it is uniformly distributed on the top cover conical surface (53) and is provided with multiple top cover bleeder ports (54).
3. a kind of safe anti-explosion lithium battery cap according to claim 2, it is characterised in that: explosion rupture disk (3) packet
The explosion-proof ring plate (31) of outer ring is included, the inner ring of explosion-proof ring plate (31) is extended with explosion-proof convex sheet (32) protruding upward, explosion-proof convex
The upper surface and/or lower end surface of slice (32) offer fracture annular groove (321), the explosion-proof convex sheet in fracture annular groove (321)
(32) explosion-proof inner sheet (322) is formed；The outer ring of the explosion-proof ring plate (31), which bends inwards, is extended with cladding ring side (33), coats ring
The cladding annular groove (34) for surrounding top cover ring (52) outer circumferential walls is formed in side (33).
4. a kind of safe anti-explosion lithium battery cap according to claim 3, it is characterised in that: the cladding ring side (33)
It symmetrically welds item (6) by one group between the lower end surface of top cover ring (52) to connect, the welding item (6) is by least seven roundlet
Solder joint is continuously formed by stacking.
5. a kind of safe anti-explosion lithium battery cap according to claim 3, it is characterised in that: the hole plate washer (2)
Including the washer ring plate (21) with explosion-proof ring plate (31) upper end face contact, it is explosion-proof convex that the inner ring of washer ring plate (21) is extended with cladding
The washer of slice (32) outer circumferential walls coats ring side (22).
6. a kind of safe anti-explosion lithium battery cap according to claim 5, it is characterised in that: the orifice plate (4) includes
Extend abacus piece (43) with the upper surface of the orifice plate ring (41) of washer ring plate (21) upper end face contact, orifice plate ring (41),
The upper surface of hole plate (43) is provided centrally with the central channel (44) for installing egative film, hole plate (43) all around around center
Axis distribution is provided with multiple orifice plate bleeder ports (42).
7. a kind of safe anti-explosion lithium battery cap according to claim 2, it is characterised in that: top cover (5) surface
Be plated with nickel coating, nickel coating with a thickness of 4~7 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822033124.6U CN208873783U (en) | 2018-12-05 | 2018-12-05 | A kind of safe anti-explosion lithium battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822033124.6U CN208873783U (en) | 2018-12-05 | 2018-12-05 | A kind of safe anti-explosion lithium battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208873783U true CN208873783U (en) | 2019-05-17 |
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ID=66471861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822033124.6U Active CN208873783U (en) | 2018-12-05 | 2018-12-05 | A kind of safe anti-explosion lithium battery cap |
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| Country | Link |
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| CN (1) | CN208873783U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239950A (en) * | 2019-07-03 | 2019-09-17 | 伊欧激光科技（苏州）有限公司 | Automatic charging device is used in the assembling of cylindrical lithium ion cell cap component |
| CN110921300A (en) * | 2019-11-29 | 2020-03-27 | 孙广静 | Explosion-proof sheet feeding device for lithium battery assembly and feeding method thereof |
-
2018
- 2018-12-05 CN CN201822033124.6U patent/CN208873783U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239950A (en) * | 2019-07-03 | 2019-09-17 | 伊欧激光科技（苏州）有限公司 | Automatic charging device is used in the assembling of cylindrical lithium ion cell cap component |
| CN110921300A (en) * | 2019-11-29 | 2020-03-27 | 孙广静 | Explosion-proof sheet feeding device for lithium battery assembly and feeding method thereof |
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