CN207967137U - battery and battery anti-explosion valve - Google Patents
battery and battery anti-explosion valve Download PDFInfo
- Publication number
- CN207967137U CN207967137U CN201820480394.9U CN201820480394U CN207967137U CN 207967137 U CN207967137 U CN 207967137U CN 201820480394 U CN201820480394 U CN 201820480394U CN 207967137 U CN207967137 U CN 207967137U
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- China
- Prior art keywords
- battery
- valve
- main valve
- valve plug
- explosion
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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
Abstract
The utility model provides a kind of battery and battery anti-explosion valve, belongs to battery technology field.How it existing while to battery pressure release carries out the technical problem such as put out a fire if being solved.This battery and battery anti-explosion valve, including valve body, the main valve plug for battery pressure release is provided on valve body, the return unit for driving main valve plug to reset is provided in valve body, the bottom of the main valve plug is made of fuse metal, inside the main valve plug cavity is internally provided with filled with main valve plug described in extinguishing chemical, it is provided with extinguishing chemical in the cavity, the main valve plug bottom includes the lower plate for being sealed in extinguishing chemical in cavity, the lower plate bottom is made of fusible metal, and extinguishing chemical is filled with inside the main valve plug.The fuse metal of the utility model main valve plug can fuse because of high temperature, and being filled in internal extinguishing chemical can release, and can guarantee that flame while releasing stress by inside battery is put out rapidly in this way.
Description
Technical field
The utility model belongs to field of batteries, is related to a kind of battery and battery anti-explosion valve.
Background technology
With popularizing for new-energy automobile, and new-energy automobile core component power battery yield is also increasing, model
It is numerous, there are rectangular aluminum hull, aluminum plastic film Soft Roll, aluminum shell column etc..Because in soft-package battery body air pressure it is excessive can have with dilatancy it is slow
Function is rushed, and the excessive critical explosive of breakthrough volume that can not expand of aluminum hull rectangular cell air pressure inside causes safety accident.At present
Some evade the risk of explosion to aluminum hull rectangular cell using setting explosion-proof valve on the cover board, but currently used explosion-proof valve
Some are all to weld very thin sheet metal, because the sheet metal is thinner than cover board and battery case so gas expansion is dashed forward at first in shell
The explosion that broken explosion-proof valve is sprayed without easily causing entire battery, but in practical applications, explosion-proof valve expansion sprays inside battery
It is exposed equally easily to cause secondary safety accident.
China's Patent Application Publication (notification number：CN201975473U；The day for announcing：2011.9.14 a kind of lithium is disclosed in)
Battery and lithium cell safety valve offer gas vent on shell, and safety valve is fixed on gas vent, the valve cover of safety valve upper end
Equipped with venthole, spring is housed, valve seat is magnetic base, and magnetic base includes being communicated with gas vent between valve cover and spool
Pedestal venthole, spool are arranged with pedestal vent seal, and the lower face of valve cover is fixed with magnet, and cover board venthole runs through magnetic
Iron, spool are magnetic spool, and the magnetism and the magnetism of spool lower end of spool upper end are repelled each other, realized by magnetic force control valve core
The break-make of gas vent prevents extraneous gas from entering lithium battery interior and internal excessive gas and is smoothly discharged, ensure that safety valve exists
Stabilization during long-time use.
There is the case where flow expansion in battery it is usually because temperature is excessively high, and temperature it is excessively high often exist it is on fire
Situation, in above-mentioned technical proposal, although often air-flow can be exhausted operation, it is difficult to control the intensity of a fire.
Invention content
The utility model existing above problem in view of the prior art provides a kind of battery and battery anti-explosion valve, this reality
With it is novel the technical problem to be solved is that：How to put out a fire while to battery pressure release.
The purpose of this utility model can be realized by following technical proposal：
A kind of battery anti-explosion valve, including valve body are provided with the main valve plug for battery pressure release, the valve body on the valve body
Inside it is provided with the return unit for driving main valve plug to reset, which is characterized in that the main valve plug is internally provided with a cavity, institute
It states and is provided with extinguishing chemical in cavity, the main valve plug bottom includes the lower plate for being sealed in extinguishing chemical in cavity, institute
It states lower plate bottom to be made of fusible metal, extinguishing chemical is filled with inside the main valve plug.
Displacement is generated by return unit enables to main valve plug can be with the pressure change in battery, and then by battery
Internal pressed gas etc. releases, meanwhile, the material of bottom, that is, lower plate of main valve plug is arranged to fusible metal, this
Sample is excessively high in internal temperature of battery and when generate on fire, fusible metal can fuse because of high temperature, for closing
The lower plate of internal extinguishing chemical is broken, and the extinguishing chemical inside main valve plug can release, and can guarantee releasing in this way
The flame of inside battery is put out rapidly while bleeding off pressure power.
Include for extinguishing chemical to be sealed in valve body at the top of the main valve plug in above-mentioned battery anti-explosion valve
Top plate, the upper plate are made of fusible metal.If on fire excessive in battery, the extinguishing chemical inside simple main valve plug does not have
Having and puts out completely, the intensity of a fire burns away, and the upper plate at the top of main valve plug is blown, and the extinguishing chemical in valve body continues to leak out,
Form secondary fire extinguishing.
In above-mentioned battery anti-explosion valve, the return unit includes resetting spring, in described resetting spring one end and valve body
Wall welds, and the resetting spring other end is welded with main valve plug, and connection inside is provided on the body wall and is let out with extraneous
Stomata.The driving main valve plug that resetting spring can be stablized resets, and under peacetime state, resetting spring keeps main valve plug to be located at raw bits
Set, so can by cell sealing, until cell internal pressure it is excessive when, after resetting spring is compressed, main valve plug
Displacement can allow air-flow to enter in bleeder port, and then air-flow flows out, and releases stress.
In above-mentioned battery anti-explosion valve, the valve rod through main valve plug, the valve are fixedly installed on the valve interior wall
One end far from valve body is provided with the valve base for hindering main valve plug overexercise on column.Valve rod can play stable main valve plug movement
The effect of track, the linear motion that main valve plug can on the one hand stablized, on the other hand, valve rod can also limit the position of main valve plug
Distance is moved, prevents it from generating pressure to inside battery.
In above-mentioned battery anti-explosion valve, radiating fin, the radiating fin and valve rod are provided on the valve outer wall
Position face.Run through main valve plug since valve rod end is longer, the partial heat of inside battery can be absorbed, then pass through heat dissipation
Fin is dispersed into the external world.
In above-mentioned battery anti-explosion valve, it is provided with elastic sealing element in the bleeder port, is set on the elastic sealing element
It is equipped with the intercommunicating pore that can be shunk with compressive resilience, and when elastic sealing element is not by pressure, intercommunicating pore is in closed state.Elasticity
Sealing element can ensure that extraneous sundries when not by pressure will not enter valve inner by intercommunicating pore, until needing
When pressure release, air pressure inside can expand intercommunicating pore, and then be discharged into the external world.
In above-mentioned battery anti-explosion valve, rubber spool is provided with outside the lower plate.Rubber spool can ensure to lead
The position that spool is used to be fastened on battery keeps the state more sealed, avoids the leakages such as electrolyte.
A kind of battery, including battery cover board, which is characterized in that be fixedly installed on the battery cover board at least one as above
The battery anti-explosion valve described in technical solution is stated, the relief hole coordinated with main valve plug is provided on the battery cover board.Relief hole with
The cooperation of main valve plug can ensure effectively be discharged when cell internal pressure is excessively high, meanwhile, it can be in battery cover
The battery anti-explosion valve of multiple and different specifications is set on plate, and then ensures that the multiple positions of battery cover board can keep stable.
Compared with prior art, the utility model has the following advantages：
1, anti-explosion valve structure is simple, while stablizing discouraged, can carry out voluntarily carrying out when temperature is high
Fire extinguishing, and built-in resetting spring can buffer and can block the gas expansion risk of burst to a certain extent, in most cases
Can exclude gas and itself will not burst, and can guarantee that battery is excellent to a certain extent.
2, explosion-proof valve can be equipped with multiple according to designed battery case or cover board, can also be welded two or more
The connection that is connected together gets up to be formed bigger module, can add more extinguishing chemicals, buffer bigger air pressure simultaneously heat dissipation capacity also can be more
It is big and at low cost.
Description of the drawings
Fig. 1 is the sectional view of the present embodiment one.
Fig. 2 is the valve rod of the present embodiment one and the structural schematic diagram of main valve plug.
Fig. 3 be in the present embodiment one elastic sealing element by the local structural graph under pressure state.
Fig. 4 is the explosive view of the present embodiment two.
In figure, 1, valve body；11, radiating fin；2, resetting spring；3, bleeder port；31, elastic sealing element；32, intercommunicating pore；
4, valve rod；41, valve base；5, main valve plug；51, extinguishing chemical；52, rubber spool；53, cavity；54, upper plate；55, lower plate；
6, battery cover board；61, relief hole.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one
As shown in Figures 1 and 2, a kind of battery anti-explosion valve, including valve body 1 made of metal, 1 cylinder structure of valve body,
1 inside of valve body is cavity structure, and 1 bottom of valve body is fixedly installed axially extending valve for fixing battery on 1 inner wall of valve body
Column 4 is arranged with the main valve plug 5 that can be slided along valve rod 4 on valve rod 4, and main valve plug 5 is located at 1 bottom of valve body, and setting is useful in valve body 1
In the return unit that driving main valve plug 5 resets.
Main valve plug 5 is internally provided with a cavity 53, and extinguishing chemical 51, the top and bottom of main valve plug 5 are provided in cavity 53
Respectively upper plate 54 and lower plate 55, upper plate 54 is made with lower plate 55 of fusible metal, and fusible metal is molten
Point generally below 232 degree of alloy, preferably fusing point 70 to 160 degree alloy, ambient temperature be more than upper plate 54 and under
When bottom plate 55, upper plate 54 fuses with lower plate 55.Meanwhile extinguishing chemical 51 is also filled with inside valve body 1, pass through
The upper plate 54 of main valve plug 5 is sealed against in valve body 1.When on fire in battery, the fuse metal of lower plate 55 is high
Temperature fuses, and the extinguishing chemical 51 inside main valve plug 5 leaks, and puts out a fire.If the intensity of a fire is excessive, the fire extinguishing inside main valve plug 5
Agent 51 is not put out completely, and the intensity of a fire burns away, and upper plate 54 is blown, and the extinguishing chemical 51 in valve body 1 continues to leak out, shape
At secondary fire extinguishing.
Return unit includes resetting spring 2, and 2 one end of resetting spring is welded with 1 inner wall of valve body, 2 other end of resetting spring and master
5 inner wall of spool welds, and the internal bleeder port 3 with the external world of connection is provided on 1 side wall of valve body.And far from valve body 1 on valve rod 4
One end is provided with the valve base 41 for hindering 5 overexercise of main valve plug, and in the case of not by external force, resetting spring 2 drives main valve
Core 5 is resisted against on valve base 41, inside battery if there is flatulence generate pressure, gas can push main valve plug 5 make its along
Displacement of valve rod.Relief hole 61 is provided on valve body 1, after main valve plug 5 is displaced to certain altitude, in 61 battery of relief hole
Gas touches relief hole 61, and gas can outward be discharged from relief hole 61.After gas pressure declines in battery, bullet is resetted
Spring 2 can drive main valve plug 5 to be resetted along valve rod 4.
It is welded and fixed on the outer wall of valve body 1 and is provided with radiating fin 11, radiating fin 11 and 4 position face of valve rod, position
The one end being connect with valve body 1 in the heat transfer of inside battery to valve rod 4 can be passed through in 4 end of valve rod of inside battery
The structure of radiating fin 11 can improve the heat-sinking capability of 1 part of valve body, and then the heat that can pass over valve rod is timely
Distribute, explosion-proof valve entire in this way can make battery certain cooling.
It is additionally provided with rubber spool 52 in the bottom of main valve plug 5, rubber spool 52 is cylindrical, and rubber spool 52 can incite somebody to action
Main valve plug 5 and the position of battery cooperation seal, and then avoid the occurrence of leakage.Before main valve plug 5 discharges extinguishing chemical 51, rubber valve
Core 52 is burned out thawing.
Meanwhile elastic sealing element 31 is provided in the bleeder port of valve body 13, elastic sealing element 31 is made of fluorubber,
With certain elasticity, elastic sealing element 31 above offer multiple intercommunicating pores 32, intercommunicating pore 32 when not by pressure, by
In the screen resilience of itself of elastic sealing element 31 so that intercommunicating pore 32 is in sealing state, as shown in Figure 1, until pressure in valve body 1
When promotion, i.e., cell internal pressure discharges, and elastic sealing element 31 pushes deformation by pressure, and intercommunicating pore 32 is opened at this time, gas
Physical efficiency accesses release, as shown in figure 3, when gas is released and finishes, intercommunicating pore 32 restores sealing, avoids the external world
Foreign matter enters inside.
Embodiment two
As shown in figure 4, a kind of battery, including battery cover board 6, it is fixedly installed on battery cover board 6 at least one as implemented
The battery anti-explosion valve of example one is provided with the relief hole 61 coordinated with main valve plug 5 on battery cover board 6.Valve body 1 is fixed by welding in
On battery cover board 6, relief hole 61 cooperates with 5 outer wall of main valve plug, and when not by pressure, resetting spring 2 drives main valve
Core 5 seals relief hole 61.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although 1, valve body is used more herein；11, radiating fin；2, resetting spring；3, bleeder port；31, elasticity is close
Sealing；32, intercommunicating pore；4, valve rod；41, valve base；5, main valve plug；51, extinguishing chemical；52, rubber spool；6, battery cover board；61、
The terms such as relief hole, but it does not preclude the possibility of using other terms.The use of these items is only for more easily retouch
State and explain the essence of the utility model；Being construed as any one of the additional limitations all is and the spirit of the present invention phase
It violates.
Claims (8)
1. a kind of battery anti-explosion valve, including valve body (1), the main valve plug (5) for battery pressure release is provided on the valve body (1),
The return unit for driving main valve plug (5) to reset is provided in the valve body (1), which is characterized in that the main valve plug (5) it is interior
Portion is provided with a cavity (53), is provided with extinguishing chemical (51) in the cavity (53), main valve plug (5) bottom includes to be used for
Extinguishing chemical (51) is sealed in the lower plate (55) in cavity (53), the lower plate (55) is made of fusible metal.
2. battery anti-explosion valve according to claim 1, which is characterized in that it is provided with extinguishing chemical (51) in the valve body (1),
Include the upper plate (54) for being sealed in extinguishing chemical (51) in valve body (1), the upper plate at the top of the main valve plug (5)
(54) it is made of fusible metal.
3. battery anti-explosion valve according to claim 1, which is characterized in that the return unit includes resetting spring (2), described
Resetting spring (2) one end is welded with valve body (1) inner wall, and resetting spring (2) other end is welded with main valve plug (5), the valve
The internal bleeder port (3) with the external world of connection is provided on body (1) side wall.
4. battery anti-explosion valve according to claim 3, which is characterized in that be fixedly installed and pass through on valve body (1) inner wall
The valve rod (4) of main valve plug (5) is worn, one end far from valve body (1) is provided with obstruction main valve plug (5) excessively fortune on the valve rod (4)
Dynamic valve base (41).
5. battery anti-explosion valve according to claim 4, which is characterized in that be provided with heat radiating fin on valve body (1) outer wall
Piece (11), the radiating fin (11) and valve rod (4) position face.
6. battery anti-explosion valve according to claim 4, which is characterized in that be provided with elastic packing in the bleeder port (3)
Part (31), being provided on the elastic sealing element (31) can be with the intercommunicating pore (32) that compressive resilience is shunk, and works as elastic sealing element
(31) not by pressure when, intercommunicating pore (32) is in closed state.
7. battery anti-explosion valve according to claim 1, which is characterized in that lower plate (55) outer wall is provided with rubber valve
Core (52).
8. a kind of battery, including battery cover board (6), which is characterized in that be fixedly installed on the battery cover board (6) at least one
Battery anti-explosion valve as described in claim 1 to 7 any one is provided on the battery cover board (6) and coordinates with main valve plug (5)
Relief hole (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480394.9U CN207967137U (en) | 2018-04-03 | 2018-04-03 | battery and battery anti-explosion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480394.9U CN207967137U (en) | 2018-04-03 | 2018-04-03 | battery and battery anti-explosion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207967137U true CN207967137U (en) | 2018-10-12 |
Family
ID=63727058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820480394.9U Expired - Fee Related CN207967137U (en) | 2018-04-03 | 2018-04-03 | battery and battery anti-explosion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207967137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110400894A (en) * | 2019-07-25 | 2019-11-01 | 清华大学 | End cover for battery cells with fire-extinguishing function concurrently |
| CN112216313A (en) * | 2020-09-16 | 2021-01-12 | 上海三利数字技术有限公司 | Data disaster recovery storage device and carrier |
-
2018
- 2018-04-03 CN CN201820480394.9U patent/CN207967137U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110400894A (en) * | 2019-07-25 | 2019-11-01 | 清华大学 | End cover for battery cells with fire-extinguishing function concurrently |
| CN112216313A (en) * | 2020-09-16 | 2021-01-12 | 上海三利数字技术有限公司 | Data disaster recovery storage device and carrier |
| CN112216313B (en) * | 2020-09-16 | 2022-04-19 | 上海三利数字技术有限公司 | Data disaster recovery storage device and carrier |
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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: 20181012 Termination date: 20210403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |