CN211700410U - Safety valve of electrochemical energy storage device - Google Patents
Safety valve of electrochemical energy storage device Download PDFInfo
- Publication number
- CN211700410U CN211700410U CN202020180536.7U CN202020180536U CN211700410U CN 211700410 U CN211700410 U CN 211700410U CN 202020180536 U CN202020180536 U CN 202020180536U CN 211700410 U CN211700410 U CN 211700410U
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- China
- Prior art keywords
- energy storage
- storage device
- electrochemical energy
- safety valve
- waist
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- 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.)
- Expired - Fee Related
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- 238000012983 electrochemical energy storage Methods 0.000 title claims abstract description 35
- 239000000446 fuel Substances 0.000 claims description 5
- 238000007373 indentation Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 abstract description 8
- 230000005518 electrochemistry Effects 0.000 abstract description 7
- 238000004880 explosion Methods 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The utility model provides an electrochemistry energy storage device relief valve, include: a bulge part which is formed by protruding outwards and is arranged on a cover plate of the electrochemical energy storage device; the waist of the bulge part is provided with an indent. The utility model discloses can guarantee to open and release pressure often smoothly when this device internal pressure surpasss allowable pressure to avoid arousing the injury accident because of the electrochemistry energy storage device explosion. The utility model discloses compare with the relief valve of other forms, simple structure, easily processing, the cost of manufacture is low, and fail safe nature is high, and the battery defective rate is low.
Description
Technical Field
The utility model relates to an energy storage equipment field specifically, relates to an electrochemistry energy storage device relief valve.
Background
In recent years, with the increasing energy crisis and environmental pollution problems, the development and utilization of new energy has become a global hot trend, and thus, the electrochemical energy storage device used as a new energy technology is just one of the research and application hotspots.
When the electrochemical energy storage device is used, abnormal gas is generated due to chemical reaction inside the battery caused by various factors, so that the pressure inside the device is excessive, and various abnormal accidents are caused. With the advent of new technologies and new materials for electrochemical energy storage devices, their safety issues have become increasingly important. Generally, a safety valve in an electrochemical energy storage device is arranged on an upper cover plate, and when the internal pressure of the electrochemical energy storage device exceeds a set value, the safety valve is broken to deflate the device so as to prevent the device from generating risks such as explosion and the like.
Stamping is typically used to thin a thin metal sheet that is scored, such as patent CN 202405350U. When the safety valve is used, if the nick is too deep, the battery shell can be damaged when the allowable pressure is not reached; if the score is too shallow, the score may not open when the shell pressure exceeds the allowable pressure. A safety valve, CN201117699Y, was formed with the end caps by pre-scored sheet metal welding. However, since such a safety valve is usually bonded to the case using PVDF adhesive, the sealing may be poor or the safety valve may be locked by using a lock nut of the vent valve, the membrane may be cracked, thereby causing a leakage phenomenon, which may affect the battery life over a long period of time.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing an electrochemistry energy storage device relief valve.
According to the utility model provides a pair of electrochemistry energy storage device relief valve, include: a bulge part which is formed by protruding outwards and is arranged on a cover plate of the electrochemical energy storage device;
the waist of the bulge part is provided with an indent.
Preferably, the indentations are provided in an outer wall and/or an inner wall of the waist.
Preferably, the shape of the dent comprises: triangular, square, trapezoidal or arcuate.
Preferably, the protruding portion comprises a platform with smooth edges and the waist portion, and the platform, the waist portion and the cover plate are integrally formed.
Preferably, the platform comprises a circular truncated cone.
Preferably, the electrochemical energy storage device comprises: a supercapacitor, a secondary battery, a reserve battery, or a fuel cell.
According to the utility model provides a pair of electrochemistry energy storage device relief valve, include: a bulge part which is formed by protruding outwards and is arranged on a cover plate of the electrochemical energy storage device;
the waist part of the bulge part is provided with an indent;
the dent is arranged on the outer wall and/or the inner wall of the waist part;
the shape of the dent includes: triangular, square, trapezoidal or arc;
the lug boss comprises a platform with smooth edges and the waist part, and the platform, the waist part and the cover plate are integrally formed;
the platform comprises a circular table;
the electrochemical energy storage device comprises: a supercapacitor, a secondary battery, a reserve battery, or a fuel cell.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses can guarantee to open and release pressure often smoothly when this device internal pressure surpasss allowable pressure to avoid arousing the injury accident because of the electrochemistry energy storage device explosion. The utility model discloses compare with the relief valve of other forms, simple structure, easily processing, the cost of manufacture is low, and fail safe nature is high, and the battery defective rate is low.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of an electrochemical energy storage device after pit punching at a safety valve of an upper cover plate;
FIG. 2 is a schematic diagram of a triangular notch structure on the outer side surface of a truncated cone-shaped safety valve of an electrochemical energy storage device;
FIG. 3 is a schematic diagram of a triangular notch structure on the inner side surface of a truncated cone-shaped safety valve of an electrochemical energy storage device;
FIG. 4 is a schematic view of a triangular notch structure on the inner side surface and the outer side surface of a truncated cone-shaped safety valve of an electrochemical energy storage device.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
As shown in fig. 1, an electrochemical energy storage device safety valve includes: a projection 1 formed on the cover plate 2 of the electrochemical energy storage device projects outward. The forming method includes stamping, etc., and the utility model discloses do not limit this. The boss comprises a platform and a waist part with smooth edges, the platform, the waist part and the cover plate are integrally formed, and the shape of the platform is a circular truncated cone.
The waist of the bulge is provided with an indent 3, and the indent 3 is arranged on the outer wall, the inner wall or both the inner wall and the outer wall of the waist. The shape of the dimple includes: triangular, square, trapezoidal or arcuate. The depth and shape of the indentation is determined by the application and testing of different electrochemical energy storage devices.
An electrochemical energy storage device comprising: a supercapacitor, a secondary battery, a reserve battery, or a fuel cell.
As shown in fig. 2, the truncated cone shaped safety valve of the electrochemical energy storage device is triangular scored on the outer side surface. As shown in fig. 3, the truncated cone shaped safety valve of the electrochemical energy storage device is triangular scored on the inner side. As shown in fig. 4, the truncated cone shaped safety valve of the electrochemical energy storage device is triangular scored on the inner and outer sides.
When the pressure inside the electrochemical energy storage device is higher than the allowable pressure, the dent of the safety valve can be broken, so that the pressure inside the device is discharged, and the safety of the battery is ensured.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (7)
1. An electrochemical energy storage device safety valve, comprising: a bulge part which is formed by protruding outwards and is arranged on a cover plate of the electrochemical energy storage device;
the waist of the bulge part is provided with an indent.
2. The electrochemical energy storage device safety valve of claim 1, wherein the indentation is provided to an outer wall and/or an inner wall of the waist portion.
3. The electrochemical energy storage device safety valve of claim 1, wherein the shape of the indentation comprises: triangular, square, trapezoidal or arcuate.
4. The electrochemical energy storage device safety valve of claim 1, wherein the raised portion comprises a smooth-edged land and the waist, the land and the waist being integrally formed with the cover plate.
5. The electrochemical energy storage device safety valve of claim 4, wherein the platform comprises a truncated cone.
6. The electrochemical energy storage device safety valve of claim 1, wherein the electrochemical energy storage device comprises: a supercapacitor, a secondary battery, a reserve battery, or a fuel cell.
7. An electrochemical energy storage device safety valve, comprising: a bulge part which is formed by protruding outwards and is arranged on a cover plate of the electrochemical energy storage device;
the waist part of the bulge part is provided with an indent;
the dent is arranged on the outer wall and/or the inner wall of the waist part;
the shape of the dent includes: triangular, square, trapezoidal or arc;
the lug boss comprises a platform with smooth edges and the waist part, and the platform, the waist part and the cover plate are integrally formed;
the platform comprises a circular table;
the electrochemical energy storage device comprises: a supercapacitor, a secondary battery, a reserve battery, or a fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020180536.7U CN211700410U (en) | 2020-02-18 | 2020-02-18 | Safety valve of electrochemical energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020180536.7U CN211700410U (en) | 2020-02-18 | 2020-02-18 | Safety valve of electrochemical energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211700410U true CN211700410U (en) | 2020-10-16 |
Family
ID=72777105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020180536.7U Expired - Fee Related CN211700410U (en) | 2020-02-18 | 2020-02-18 | Safety valve of electrochemical energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211700410U (en) |
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2020
- 2020-02-18 CN CN202020180536.7U patent/CN211700410U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |