CN220652263U - Decompression device of mining explosion-proof lithium ion storage battery - Google Patents
Decompression device of mining explosion-proof lithium ion storage battery Download PDFInfo
- Publication number
- CN220652263U CN220652263U CN202322325778.7U CN202322325778U CN220652263U CN 220652263 U CN220652263 U CN 220652263U CN 202322325778 U CN202322325778 U CN 202322325778U CN 220652263 U CN220652263 U CN 220652263U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof
- copper ball
- storage battery
- pressure relief
- 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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Links
- 238000003860 storage Methods 0.000 title claims abstract description 21
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 16
- 238000005065 mining Methods 0.000 title claims abstract description 14
- 230000006837 decompression Effects 0.000 title description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052802 copper Inorganic materials 0.000 claims abstract description 33
- 239000010949 copper Substances 0.000 claims abstract description 33
- 238000005245 sintering Methods 0.000 claims abstract description 30
- 239000003063 flame retardant Substances 0.000 claims abstract description 24
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000004880 explosion Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 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
- Compositions Of Oxide Ceramics (AREA)
Abstract
The utility model relates to a pressure relief device of a mining explosion-proof lithium ion storage battery, which relates to the technical field of pressure relief devices of storage batteries and comprises a copper ball sintering fire-retardant sheet, an explosion-proof flange, a rubber pad and a compression nut, wherein the explosion-proof flange is fixed to a power supply shell, the copper ball sintering fire-retardant sheet is arranged in a groove of the explosion-proof flange and seals an opening of the power supply shell, the compression nut is in threaded connection with the explosion-proof flange, and the rubber pad is arranged between the compression nut and the copper ball sintering fire-retardant sheet. The pressure relief device of the mining explosion-proof lithium ion storage battery disclosed by the utility model can not damage the structure of the pressure relief device when pressure relief is completed.
Description
Technical Field
The utility model relates to a pressure relief device of a storage battery, in particular to a pressure relief device of a mining explosion-proof lithium ion storage battery.
Background
Thermal runaway, which is a main object of research on improvement of safety of lithium ion batteries, is a chain reaction phenomenon induced by various causes, and a large amount of heat and harmful gases emitted during thermal runaway may cause ignition and explosion of the batteries. The thermal runaway of the battery often starts from the decomposition of the negative electrode SEI film in the battery cell, and then the diaphragm is decomposed and melted, so that the negative electrode and the electrolyte are reacted, and then the positive electrode and the electrolyte are decomposed, so that a large-scale internal short circuit is initiated, the electrolyte is burnt, the electrolyte is spread to other cells, serious thermal runaway is caused, and the whole battery pack is spontaneous. The theory divides thermal runaway into three stages, namely a self-heating stage of 50-140 ℃, a thermal runaway stage of 140-850 ℃, a thermal runaway termination stage of 850-normal temperature, and the large-scale melting temperature of the diaphragm provided by some documents starts at 140 ℃. If thermal runaway is not properly managed and resolved, equipment performance and production safety can be affected. According to the coal industry standard of the people's republic of China
The technical requirement of the power supply safety of the anti-explosion lithium ion storage battery for mine MT_T1200-2023 clearly specifies that the power supply battery cavity should have a pressure relief structure.
The explosion-proof pressure relief mechanism of the mining battery box has the publication number of CN218182408U, a flame-retardant film is arranged at a pressure relief opening of the battery, and the flame-retardant film is broken to relieve pressure after the internal pressure of the battery reaches a set value. The design mode is the same as the pressure relief mode of the storage battery of the other types, and a destructive structure-film is adopted to prevent the internal pressure of the battery from being overlarge. The disadvantage of this construction is that a new membrane needs to be replaced after each discharge.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a pressure relief device of a mining explosion-proof lithium ion storage battery.
The technical scheme is as follows: in order to achieve the above purpose, the pressure relief device of the mining explosion-proof lithium ion storage battery comprises a copper ball sintering fire-retardant sheet and a fixing component, wherein the copper ball sintering fire-retardant sheet is formed by preparing a sintering element made of copper, and the copper ball sintering fire-retardant sheet is mounted to an opening of a power supply shell through the fixing component.
Preferably, the fixing component comprises an explosion-proof flange, a rubber pad and a compression nut, wherein the explosion-proof flange is fixed to the power supply shell, the copper ball sintering fire-retardant sheet is arranged in a groove of the explosion-proof flange and seals an opening of the power supply shell, the compression nut is in threaded connection with the explosion-proof flange, and the rubber pad is arranged between the compression nut and the copper ball sintering fire-retardant sheet.
Preferably, the bonding surface of the copper ball sintering fire-retardant sheet and the explosion-proof flange is bonded by epoxy resin.
Preferably, the power supply shell, the explosion-proof flange and the compression nut are all made of stainless steel.
The utility model discloses a pressure relief device of a mining explosion-proof lithium ion storage battery, which has at least the following technical effects:
the copper ball sintering fire-retardant sheet in the device can release pressure to the external environment in the explosion-losing process of the storage battery, and can also prevent the explosive environment around the storage battery from being detonated into the storage battery; meanwhile, in the explosion-losing process of the storage battery, the copper ball sintered fire-retardant sheet does not generate permanent deformation or damage which damages the fire-retardant performance of the copper ball sintered fire-retardant sheet, and the copper ball sintered fire-retardant sheet can be reused.
Drawings
FIG. 1 is an exploded view of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the structure of the present utility model;
fig. 3 is a schematic view of the installation of the present utility model.
In the figure, 1, sintering a copper ball to form a fire-retardant sheet; 2. a fixing assembly; 3. an explosion-proof flange; 4. a rubber pad; 5. a compression nut; 6. a power supply housing.
Detailed Description
The principles and features of the present utility model are described below with reference to fig. 1 through 3, the examples being provided for illustration only and not for limitation of the scope of the utility model.
The utility model provides a mining explosion-proof lithium ion battery's pressure release device, includes copper ball sintering fire relief piece 1 and fixed subassembly 2, and copper ball sintering fire relief piece 1 is formed by the sintering component preparation that the material was copper, and copper ball sintering fire relief piece 1 passes through fixed subassembly 2 to be installed to the opening part of power casing 6. In this example, a copper ball sintered element having a diameter of 50mm, a thickness of 5mm and a density of 100 mesh was used. The sintering material has high filtering precision, good air permeability and stable pore, and the phenomenon that the pore diameter changes along with the pressure change can not occur.
The fixing component 2 is an assembly and comprises an explosion-proof flange 3, a rubber pad 4 and a compression nut 5. The power supply shell 6, the explosion-proof flange 3 and the compression nut 5 are made of stainless steel, and specifically, the parts are made of stainless steel Q235A. The power supply shell 6 is respectively provided with 6 wire holes with the diameter of 8mm, and the explosion-proof flange 3 is fixed to the power supply shell 6 through bolts. The copper ball sintering fire-retardant sheet 1 is arranged in a groove of the explosion-proof flange 3 and seals the opening of the power supply shell 6. The compression nut 5 is in threaded connection with the explosion-proof flange 3, and the rubber gasket 4 is arranged between the compression nut 5 and the copper ball sintering fire-retardant sheet 1. The bonding surface of the copper ball sintering fire-retardant sheet 1 and the explosion-proof flange 3 is bonded by epoxy resin, the temperature range of the selected epoxy resin glue is-45 ℃ to 200 ℃, and the rubber pad 4 is placed after solidification. The thickness of the rubber pad 4 is 2mm+0.1mm, the surface roughness is 3.2, the hardness is IRHD 22-65 degrees, and the COT is-20-120 ℃. The specification of the compression nut 5 is M54.
When the battery is particularly used, high-pressure gas generated in the battery cavity directly acts on the copper ball sintering fire-retardant sheet 1, and the gas and pressure are released through the copper ball sintering fire-retardant sheet 1. Meanwhile, due to the design structure of the explosion-proof flange, the copper ball sintering fire-retardant sheet 1 cannot be separated from the power supply shell 6, so that an explosion-proof effect and a pressure relief effect are achieved.
According to the technical scheme disclosed by the utility model, the risk caused by thermal runaway of the lithium ion storage battery is fully considered, the pressure generated by internal explosion can be borne, explosion propagation to the surrounding explosive environment of the outer shell can be prevented, permanent deformation or damage which damages the fire retarding performance of the explosion-releasing device is not generated in the explosion-releasing process, and meanwhile, the pressure releasing device has the advantages of simple structure, low cost and simplicity and convenience in installation.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (4)
1. The pressure relief device of the mining explosion-proof lithium ion storage battery is characterized by comprising a copper ball sintering fire-retarding piece (1) and a fixing component (2), wherein the copper ball sintering fire-retarding piece (1) is formed by preparing a sintering element made of copper, and the copper ball sintering fire-retarding piece (1) is mounted to an opening of a power supply shell (6) through the fixing component (2).
2. The pressure relief device of the mining explosion-proof lithium ion storage battery according to claim 1, wherein the fixing component (2) comprises an explosion-proof flange (3), a rubber gasket (4) and a compression nut (5), the explosion-proof flange (3) is fixed to a power supply shell (6), the copper ball sintering fire-retarding sheet (1) is arranged in a groove of the explosion-proof flange (3) and seals an opening of the power supply shell (6), the compression nut (5) is in threaded connection with the explosion-proof flange (3), and the rubber gasket (4) is arranged between the compression nut (5) and the copper ball sintering fire-retarding sheet (1).
3. The pressure relief device for the mining explosion-proof lithium ion storage battery according to claim 2, wherein the bonding surface of the copper ball sintering fire-retardant sheet (1) and the explosion-proof flange (3) is bonded by epoxy resin.
4. The pressure relief device for the mining explosion-proof lithium ion storage battery according to claim 2, wherein the power supply shell (6), the explosion-proof flange (3) and the compression nut (5) are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322325778.7U CN220652263U (en) | 2023-08-29 | 2023-08-29 | Decompression device of mining explosion-proof lithium ion storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322325778.7U CN220652263U (en) | 2023-08-29 | 2023-08-29 | Decompression device of mining explosion-proof lithium ion storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220652263U true CN220652263U (en) | 2024-03-22 |
Family
ID=90286287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322325778.7U Active CN220652263U (en) | 2023-08-29 | 2023-08-29 | Decompression device of mining explosion-proof lithium ion storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220652263U (en) |
-
2023
- 2023-08-29 CN CN202322325778.7U patent/CN220652263U/en active Active
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