CN112086603A - Explosion-proof cover plate of lithium ion battery - Google Patents
Explosion-proof cover plate of lithium ion battery Download PDFInfo
- Publication number
- CN112086603A CN112086603A CN202010905745.8A CN202010905745A CN112086603A CN 112086603 A CN112086603 A CN 112086603A CN 202010905745 A CN202010905745 A CN 202010905745A CN 112086603 A CN112086603 A CN 112086603A
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- CN
- China
- Prior art keywords
- explosion
- cover plate
- battery
- proof
- lithium ion
- 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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- 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
-
- 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 invention discloses an explosion-proof cover plate of a lithium ion battery, which comprises a first battery cover plate, a second battery cover plate, a protective top cover, an explosion-proof film, a bolt and a gasket, wherein the second battery cover plate is fixedly arranged below the first battery cover plate through the bolt, the protective top cover is in threaded connection with the first battery cover plate, the explosion-proof film is clamped between the first battery cover plate and the second battery cover plate, and the gasket is clamped between the explosion-proof film and the second battery cover plate. The invention has the following advantages: adopt elasticity refractory material to make the rupture membrane, and adopt the protection top cap of ball type, can release the inside gas pressure of battery after, also can not damage the rupture membrane, the battery can reuse, and the risk that battery chemical agent flows can not appear.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of battery cover plates, in particular to an explosion-proof cover plate of a lithium ion battery.
[ background of the invention ]
The traditional battery explosion-proof structure is characterized in that an explosion-proof hole is formed in a battery cover plate, and then an explosion-proof sheet is connected to the explosion-proof hole in a welding and sealing mode. When the internal pressure of the battery is too high, the gas can burst the easy-breaking groove of the explosion-proof sheet to avoid the explosion of the battery. At present, the explosion-proof piece generally adopts rigid materials such as aluminum materials, stainless steel, titanium materials and the like, adopts rigid materials, can expand the explosion-proof piece only when the internal gas pressure is large enough, but once the explosion-proof piece is damaged, the battery is not exploded, the explosion-proof piece is lacked, the battery has potential safety hazard, and the battery can not be used continuously.
[ summary of the invention ]
The invention aims to provide an explosion-proof cover plate of a lithium ion battery, which can solve the technical problems related to the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an explosion-proof cover plate of a lithium ion battery comprises a first battery cover plate, a second battery cover plate, a protective top cover, an explosion-proof film, a bolt and a gasket, wherein the first battery cover plate comprises a flat plate part and a first vertical part extending downwards from the flat plate part, a first through hole is arranged on the flat plate part, the first vertical part corresponds to the first through hole, an internal thread is arranged on the inner side surface of the first vertical part, the protective top cover comprises a hemispherical part and a second vertical part extending from the hemispherical part, an external thread matched with the internal thread is arranged on the outer side surface of the second vertical part, a plurality of exhaust holes are arranged on the hemispherical part in an array manner, the second battery cover plate corresponds to the first through hole and is fixed below the first battery cover plate through the bolt, the second battery cover plate comprises a first step part provided with an explosion-proof hole, a second step part extending from the first step part and a third step part extending from the second step part, the packing ring install in on the first step portion just the upper surface of packing ring with second step portion parallel and level, the rupture membrane is made by elastic refractory material, including middle deformation portion and the fixed part that extends from the periphery of middle deformation portion, be equipped with in the middle deformation portion and link up the fracture of middle deformation portion, the fixed part including install in the packing ring with first portion on the second step portion and from first portion extends and presss from both sides and locates third step portion with second portion between the flat plate portion.
Preferably: the explosion-proof membrane is made of a silica gel material.
Preferably: the protective top cover is made of an aluminum alloy material.
Preferably: the bolt comprises a screw rod, a disc spring pre-tightening gasket and a nut.
Preferably: the gasket is made of a rubber material.
Compared with the prior art, the lithium ion battery explosion-proof cover plate provided by the invention has the following advantages: adopt elasticity refractory material to make the rupture membrane, and adopt the protection top cap of ball type, can release the inside gas pressure of battery after, also can not damage the rupture membrane, the battery can reuse, and the risk that battery chemical agent flows can not appear.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic cross-sectional view of an explosion-proof cover plate of a lithium ion battery according to the present invention;
fig. 2 is a schematic top view of the rupture disk of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides an explosion-proof cover plate for a lithium ion battery, including a first battery cover plate 1, a second battery cover plate 2, a protective top cover 3, an explosion-proof membrane 4, a bolt 5 and a gasket 6, where the second battery cover plate 2 is fixedly disposed below the first battery cover plate 1 through the bolt 5, the protective top cover 3 is in threaded connection with the first battery cover plate 1, the explosion-proof membrane 4 is sandwiched between the first battery cover plate 1 and the second battery cover plate 2, and the gasket 6 is sandwiched between the explosion-proof membrane 4 and the second battery cover plate 2.
The first battery cover 1 includes a flat plate portion 11 and a first vertical portion 12 extending downward from the flat plate portion 11, the flat plate portion 11 is provided with a first through hole (not numbered), the first vertical portion 12 is disposed corresponding to the first through hole, and an inner side surface of the first vertical portion 12 is provided with an internal thread (not shown).
Protection top cap 3 is made by the aluminum alloy material, include hemisphere portion 31 and certainly the perpendicular portion 32 of second that hemisphere portion 31 extends, the outside of the perpendicular portion 32 on the surface be equipped with internal thread complex external screw thread (not shown), through the internal thread with the cooperation of external screw thread will protection top cap 3 spiro union in on the first battery apron 1, make things convenient for the dismouting like this protection top cap 3. A plurality of air vent holes 311 are arranged in an array on hemispherical portion 31.
The second battery apron 2 corresponds first through-hole passes through bolt 5 is fixed in first battery apron 1 below, second battery apron 2 including be equipped with explosion-proof hole 211 first step portion 21, certainly second step portion 22 that first step portion 21 extends and certainly third step portion 23 that second step portion 22 extends, packing ring 6 install in on the first step portion 21 just the upper surface of packing ring 6 with second step portion 22 parallel and level.
Specifically, the bolt 5 includes a screw 51, a disc spring pre-tightening gasket 52 and a nut 53, and by providing the disc spring pre-tightening gasket 52, it can be ensured that the bolt 5 is not easily loosened.
Referring again to fig. 2, the rupture disk 4 is made of an elastic refractory material, such as a silica gel material. The rupture membrane 4 includes middle deformation portion 41 and the fixed part 42 that extends from the periphery of middle deformation portion 41, be equipped with on the middle deformation portion 41 and link up the fracture 411 of middle deformation portion 41, the fixed part 42 including install in packing ring 6 and first part 421 on the second step portion 22 and certainly first part 421 extends and presss from both sides and locates third step portion 23 with second part 422 between the flat plate portion 11. When the intermediate deformation portion 41 expands into the protective top cover 3, the slit 411 is expanded, and gas is discharged to release the internal pressure of the battery.
Compared with the prior art, the lithium ion battery explosion-proof cover plate provided by the invention has the following advantages: adopt elasticity refractory material to make the rupture membrane, and adopt the protection top cap of ball type, can release the inside gas pressure of battery after, also can not damage the rupture membrane, the battery can reuse, and the risk that battery chemical agent flows can not appear.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (5)
1. The utility model provides an explosion-proof apron of lithium ion battery which characterized in that: including first battery apron, second battery apron, protection top cap, rupture membrane, bolt and packing ring, first battery apron includes the flat board portion and from the first vertical part of flat board portion downwardly extending, be equipped with first through-hole on the flat board portion, first vertical part corresponds the first through-hole setting, be equipped with the internal thread on the inboard surface of first vertical part, the protection top cap includes hemisphere portion and the second vertical part that extends from hemisphere portion, the outside of second vertical part on the surface be equipped with interior screw thread complex, the array is equipped with a plurality of exhaust holes on the hemisphere portion, second battery apron corresponds first through-hole is fixed in first battery apron below through the bolt, second battery apron includes the first step portion that is equipped with the explosion-proof hole, from the second step portion that first step portion extends and from the third step portion that second step portion extends, the packing ring install in on the first step portion just the upper surface of packing ring with second step portion parallel and level, the rupture membrane is made by elastic refractory material, including middle deformation portion and the fixed part that extends from the periphery of middle deformation portion, be equipped with in the middle deformation portion and link up the fracture of middle deformation portion, the fixed part including install in the packing ring with first portion on the second step portion and from first portion extends and presss from both sides and locates third step portion with second portion between the flat plate portion.
2. The lithium ion battery explosion-proof cover plate of claim 1, characterized in that: the explosion-proof membrane is made of silica gel.
3. The lithium ion battery explosion-proof cover plate of claim 1, characterized in that: the protective top cover is made of an aluminum alloy material.
4. The lithium ion battery explosion-proof cover plate of claim 1, characterized in that: the bolt comprises a screw rod, a disc spring pre-tightening gasket and a nut.
5. The lithium ion battery explosion-proof cover plate of claim 1, characterized in that: the gasket is made of a rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905745.8A CN112086603A (en) | 2020-09-01 | 2020-09-01 | Explosion-proof cover plate of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905745.8A CN112086603A (en) | 2020-09-01 | 2020-09-01 | Explosion-proof cover plate of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112086603A true CN112086603A (en) | 2020-12-15 |
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ID=73731320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010905745.8A Withdrawn CN112086603A (en) | 2020-09-01 | 2020-09-01 | Explosion-proof cover plate of lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN112086603A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101593818A (en) * | 2008-05-30 | 2009-12-02 | 三星Sdi株式会社 | Cap assemblies and secondary cell with this cap assemblies |
| CN101707239A (en) * | 2009-10-26 | 2010-05-12 | 无锡市金杨新型电源有限公司 | Battery anti-explosion positive cover structure |
| CN102005549A (en) * | 2010-10-27 | 2011-04-06 | 杨学新 | Explosion-proof combined cap of high-power battery |
| CN102165624A (en) * | 2008-10-14 | 2011-08-24 | 株式会社Lg化学 | Cap assembly with improved stability and cylindrical secondary battery including the same |
| CN201994355U (en) * | 2011-04-12 | 2011-09-28 | 刘怀志 | Riveted anti-explosion cover plate of power battery |
| CN103650199A (en) * | 2011-07-13 | 2014-03-19 | 株式会社Lg化学 | Cylindrical rechargeable battery |
| CN203774388U (en) * | 2014-04-23 | 2014-08-13 | 张银波 | Cylindrical lithium battery explosion-proof cap |
-
2020
- 2020-09-01 CN CN202010905745.8A patent/CN112086603A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101593818A (en) * | 2008-05-30 | 2009-12-02 | 三星Sdi株式会社 | Cap assemblies and secondary cell with this cap assemblies |
| CN102165624A (en) * | 2008-10-14 | 2011-08-24 | 株式会社Lg化学 | Cap assembly with improved stability and cylindrical secondary battery including the same |
| CN101707239A (en) * | 2009-10-26 | 2010-05-12 | 无锡市金杨新型电源有限公司 | Battery anti-explosion positive cover structure |
| CN102005549A (en) * | 2010-10-27 | 2011-04-06 | 杨学新 | Explosion-proof combined cap of high-power battery |
| CN201994355U (en) * | 2011-04-12 | 2011-09-28 | 刘怀志 | Riveted anti-explosion cover plate of power battery |
| CN103650199A (en) * | 2011-07-13 | 2014-03-19 | 株式会社Lg化学 | Cylindrical rechargeable battery |
| CN203774388U (en) * | 2014-04-23 | 2014-08-13 | 张银波 | Cylindrical lithium battery explosion-proof cap |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201215 |
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| WW01 | Invention patent application withdrawn after publication |