CN105789517A - Anti-explosion valve for all-vanadium redox flow battery - Google Patents
Anti-explosion valve for all-vanadium redox flow battery Download PDFInfo
- Publication number
- CN105789517A CN105789517A CN201610169577.4A CN201610169577A CN105789517A CN 105789517 A CN105789517 A CN 105789517A CN 201610169577 A CN201610169577 A CN 201610169577A CN 105789517 A CN105789517 A CN 105789517A
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- China
- Prior art keywords
- flow battery
- sealing member
- explosion
- vanadium flow
- valve body
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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.)
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Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses an anti-explosion valve for an all-vanadium redox flow battery. The anti-explosion valve comprises a valve body, wherein the valve body comprises a shell and a first sealing element; the first sealing element is arranged in the shell; an air through cavity is enclosed by the end surface of one end of the first sealing element and partial inner wall of the shell; the first sealing element comprises a guide rail hole; the valve body also comprises a second sealing element and an elastic part; an air inlet is blocked by the head of the second sealing element under the action of the elastic part; when a gas accumulated at the air inlet overcomes the acting force of the elastic part, the head of the second sealing element departs from the air inlet and permits the gas to enter the air through cavity and to flow outside through an air outlet of the air through cavity; a filter device comprises a filter cavity for accommodating an alkaline filtrate; and the filter cavity is communicated with the air outlet of the valve body through an air outlet channel. The solved technical problem is to overcome the disadvantage that a liquid storage tank of an existing flow battery is easily damaged by air pressure or explodes; according to the anti-explosion valve for the all-vanadium redox flow battery, the liquid storage tank can be automatically decompressed; and air is not polluted.
Description
Technical field
The present invention relates to liquid cell field.It is specially a kind of explosion-proof valve for all-vanadium flow battery.
Background technology
All-vanadium flow battery is a kind of novel battery, due to the characteristic of its environmental protection, obtains and increasingly uses widely.All-vanadium flow battery is mainly made up of pile, electrolyte and control system, and its operation principle is: using there is different valence state vanadium ion solution as the active substance of positive pole and negative pole, be separately stored in respective electrolyte storage tank.Two kinds of electrolyte, under the driving of respective pump, are separately circulated the negative or positive electrode flowing through battery, and oxidation and reduction reaction occur at ionic membrane two ends, it is achieved the discharge and recharge to battery by respective electrolyte storage tank.
The electrolyte of all-vanadium flow battery needs to seal and air exclusion, if sealing improper, electrolyte contacts air can oxidized cause inefficacy, the energy content of battery is caused to lose, making battery charging and discharging low energy efficiency, even the energy after charging is wasted completely, it is impossible to electric discharge.Meanwhile, when external loading short circuit or charger are broken down, when battery short circuit or over-charging of battery, the temperature of electrolyte can steeply rise, and bubbing, and gas is with certain acidity.Now, the fluid reservoir sealed can produce to expand due to gathering of gas, if can not pressure release in time, it is possible to make the breakaway under the influence of air pressure of fluid reservoir weak seal position, cause electrolyte and sour gas leakage, blast as air pressure continuation rising may result in fluid reservoir.
Summary of the invention
Present invention solves the technical problem that being in that when overcoming existing all-vanadium flow battery in short circuit or overcharge is easily caused the shortcoming that fluid reservoir is damaged by air pressure or explodes, a kind of explosion-proof valve for all-vanadium flow battery is provided, can automatically fluid reservoir be carried out pressure release and will not contaminated air.
The explosion-proof valve for all-vanadium flow battery of the present invention, including:
Valve body, described valve body includes housing and the first sealing member being located in described housing, the outer wall of described first sealing member coordinates with described housing seal, described first sealing member is limited axially with respect to described housing, and the described end face of first sealing member one end and the internal partial wall of described housing surrounded air cavity jointly；The wall of described housing is provided with the gas allowing described all-vanadium flow battery to produce and enters the described air inlet crossing air cavity and allow described gas to flow out the described gas outlet crossing air cavity；Described first sealing member has guide rail hole, described valve body also includes the second sealing member, described second sealing member has bar portion and head, and described bar portion penetrates described guide rail hole and can move in described guide rail hole, and the outer wall in described bar portion coordinates with the inner wall sealing of described guide rail hole；Described valve body also includes elastic component, under the effect of described elastic component, the head of described second sealing member seals described air inlet, when the described gas accumulating in described air inlet place overcomes the active force of described elastic component, the head of described second sealing member leaves described air inlet and allowed gas into air cavity and passed through the gas outlet outflow of air cavity；
Defecator, described defecator has the filter chamber holding alkaline filter liquid, and described filter chamber is communicated by the gas outlet of outlet passageway with described valve body.
As preferably, described valve body is additionally included in the described air pressure crossed in air cavity and exceedes the alarm of setting value alarm.
As preferably, the described explosion-proof valve for all-vanadium flow battery also includes the top cover being positioned at described shell one end, this end of described housing is relative with the one end being provided with air cavity, described alarm is located in described top cover, described alarm includes battery, buzzer, wire and touch switch, and the tentacle of described touch switch can connect with battery and buzzer under the effect of described elastic component so that buzzer rings.
As preferably, described elastic component is positioned at the bar portion of the orbit hole of described first sealing member, one end and described second sealing member and offsets, and the other end and described touch switch offset.
As preferably, described top cover makes described elastic component to be replaced with described housing is detachably connected.
As preferably, described touch switch is provided with positioning convex towards the side of described second sealing member, and described elastic component is compression spring, and the one end of described compression spring is enclosed within described positioning convex.
As preferably, the inwall of described valve body housing is provided with the spacing preiection for described first sealing member carries out axial limiting, and described spacing preiection offsets near described one end crossing air cavity with described first sealing member.
As preferably, the air inlet of described valve body is communicated by inlet channel with the fluid reservoir of described all-vanadium flow battery.
As preferably, described valve body and defecator are structure as a whole.
As preferably, being provided with air vent between a sidewall and the roof of described defecator.
Compared to the prior art the explosion-proof valve for all-vanadium flow battery of the present invention, has the advantages that
1, the present invention for the explosion-proof valve of all-vanadium flow battery, when all-vanadium flow battery normally uses, salable fluid reservoir, it is prevented that electrolyte contacts air and go bad.When there is overload or overcharging, sour gas can be guided to discharge in fluid reservoir, and sour gas is filtered neutralisation treatment removing harmful position therein, not only ensure that the safety of all-vanadium flow battery still prevents the sour gas contaminated air of its generation.
2, the air pressure that the valve body for the explosion-proof valve of all-vanadium flow battery of the present invention was additionally included in air cavity exceedes the alarm of setting value alarm.When air inlet open, the air pressure in air cavity is identical with the air pressure in the fluid reservoir of all-vanadium flow battery excessively, and the air pressure that the air pressure in air cavity exceedes in the fluid reservoir of setting value and all-vanadium flow battery excessively exceedes setting value.After hearing warning, all-vanadium flow battery can be processed by operator in time.
3, the alarm for the explosion-proof valve of all-vanadium flow battery of the present invention has touch switch, the bar portion of elastic component one end and described second sealing member offsets, the other end and described touch switch offset, the change of air pressure causes the change of shape of elastic component, the stress deformation of elastic component can promote touch switch action, when deformation at elastic component reaches the degree set, touch switch closes, and makes alarm equipment alarm.This design does not need barometrical participation, simple and reliable for structure.
Accompanying drawing explanation
Fig. 1 is the perspective view of the explosion-proof valve for all-vanadium flow battery of one embodiment of the invention.
Fig. 2 is the top view of the explosion-proof valve for all-vanadium flow battery in Fig. 1.
Fig. 3 is the decomposition diagram of the explosion-proof valve for all-vanadium flow battery in Fig. 1.
Fig. 4 is the sectional view of the explosion-proof valve for all-vanadium flow battery of one embodiment of the invention line A-A along Fig. 2.
Fig. 5 is the schematic diagram of the alarm of the explosion-proof valve for all-vanadium flow battery of one embodiment of the invention.
Accompanying drawing labelling
1 valve body, 11 housings, 12 first sealing members, 121 guide rail holes, 13 cross air cavity, 14 air inlets, 15 gas outlets, 16 spacing preiections, 17 second sealing members, 171 bar portions, 172 heads；
2 defecators, 21 filter chambers, 22 sidewalls, 23 roofs, 24 air vents；
3 inlet channels；
4 outlet passageways；
5 top covers, 51 batteries, 52 buzzers, 53 wires, 54 touch switch, 541 tentacles, 542 positioning convex.
Detailed description of the invention
Fig. 1 is the perspective view of the explosion-proof valve for all-vanadium flow battery of one embodiment of the invention.Fig. 2 is the top view of the explosion-proof valve for all-vanadium flow battery in Fig. 1.As depicted in figs. 1 and 2, the explosion-proof valve for all-vanadium flow battery of the present invention, including valve body 1 and defecator 2, valve body 1 is for controlling the gas in all-vanadium flow battery fluid reservoir, and defecator 2 is for being filtered sour gas neutralizing.Connected by inlet channel 3 between air inlet 14 and the fluid reservoir of all-vanadium flow battery of valve body 1.When external loading short circuit or charger are broken down, the temperature of electrolyte can steeply rise, and precipitates out sour gas, and sour gas enters in inlet channel 3.
As shown in Figure 3 and Figure 4, described valve body 1 includes housing 11 and the first sealing member 12 being located in described housing 11, the outer wall of described first sealing member 12 seals with described housing 11 and coordinates, described first sealing member 12 is limited axially with respect to described housing 11, and the described end face of first sealing member 12 one end and the internal partial wall of described housing 11 surrounded air cavity 13 jointly.First sealing member 12 can pass through to be embodied in various ways the restriction of the relative position with housing 11, as shown in Figure 3, the inwall of valve body 1 housing 11 is provided with the spacing preiection 16 for described first sealing member 12 carries out axial limiting relatively arranged a pair, spacing preiection 16 is along a circumferentially extending segment distance of inwall, and described spacing preiection 16 offsets near described one end crossing air cavity 13 with described first sealing member 12.Certainly, in other embodiments, spacing preiection 16 can also be one overall along the inwall projection of a week.
The wall of described housing 11 is provided with the gas allowing described all-vanadium flow battery to produce and enters the described air inlet 14 crossing air cavity 13 and allow described gas to flow out the described gas outlet 15 crossing air cavity 13.Described first sealing member 12 has guide rail hole 121, described valve body 1 also includes the second sealing member 17, described second sealing member 17 has bar portion 171 and head 172, described bar portion 171 penetrates described guide rail hole 121 and can move in described guide rail hole 121, and the outer wall in described bar portion 171 coordinates with the inner wall sealing of described guide rail hole 121.
Described valve body 1 also includes elastic component (not shown), and under the effect of described elastic component, the head 172 of described second sealing member 17 seals described air inlet 14.Elastic component is compressed the elastic component with tension force, in the present embodiment, for compression spring.When entering inlet channel 3 and accumulating in active force that the described gas at described air inlet 14 place overcomes described elastic component, described second sealing member 17 moves along the guide rail hole 121 of described first sealing member 12, and the head 172 of described second sealing member 17 leaves described air inlet 14 and allowed gas into air cavity 13 and passed through the gas outlet 15 of air cavity 13 and flow out.
Described defecator 2 has the filter chamber 21 holding alkaline filter liquid, and described filter chamber 21 is communicated with the gas outlet 15 of described valve body 1 by outlet passageway 4.Sour gas is directed in alkaline filter liquid and is neutralized and processes accordingly, thus the harmful substance eliminated in sour gas so that it is can be discharged in air.
The present invention in the explosion-proof valve of all-vanadium flow battery, when all-vanadium flow battery normally uses, salable fluid reservoir, it is prevented that electrolyte contacts air and go bad.When there is overload or overcharging, sour gas can be guided to discharge in fluid reservoir, and sour gas is filtered neutralisation treatment removing harmful substance therein, not only ensure that the safety of all-vanadium flow battery still prevents the sour gas contaminated air of its generation.
As preferably, described valve body 1 is additionally included in the described air pressure crossed in air cavity 13 and exceedes the alarm of setting value alarm, when air inlet 14 is opened, crossing the air pressure in air cavity 13 is identical with the air pressure in the fluid reservoir of all-vanadium flow battery, and the air pressure that the air pressure in air cavity 13 exceedes in the fluid reservoir of setting value and all-vanadium flow battery excessively exceedes setting value.
In the present embodiment, also including the top cover 5 being positioned at described housing 11 one end for the explosion-proof valve of all-vanadium flow battery, this end of described housing 11 is relative with the one end being provided with air cavity 13, and described alarm is located in described top cover 5.Described top cover 5 is detachably connected with described housing 11, detachably connected can be realized by various existing means.In the assembled state, top cover is fixed with housing 11, and top cover 5 one end and the first sealing member 12 offset.As shown in Figure 5, described alarm includes the battery 51, buzzer 52, wire 53 and the touch switch 54 that are located in top cover 5, the tentacle 541 of described touch switch 54 can connect with battery 51 and buzzer 52 respectively under the effect of described elastic component so that buzzer 52 ring and report to the police.After hearing warning, all-vanadium flow battery can be processed by operator in time.
Described elastic component is in the present embodiment for compressing spring, and the bar portion 171 being positioned at the orbit hole of described first sealing member 12, one end and described second sealing member 17 offsets, and the other end and described touch switch 54 offset.The change of air pressure causes the change of shape of elastic component, and the stress deformation of elastic component can promote touch switch 54 action, and when the deformation at elastic component reaches the degree set, touch switch 54 closes, and makes alarm equipment alarm.This design does not need barometrical participation, simple and reliable for structure.
The pretightning force of spring is depended in the warning of alarm, different size, unlike material spring there is different pretightning forces, take off top cover and replaceable spring, realize reporting to the police under different atmospheric pressure values, thus forming different level of securitys, it addition, when spring is aging also replaceable new spring.In the present invention, owing to the first sealing member and the second sealing member achieve sealing, therefore, there is no need to consider the corrosion resistance of elastic component, common spring may act as the elastic component in the present invention.
As preferred scheme, described touch switch 54 is provided with positioning convex 542 towards the side of described second sealing member 17, the one end of described compression spring is enclosed within described positioning convex 542, can prevent from producing to rock in the process that spring compressed, thus improving its stability.
Certainly, in other examples, alarm can also be not arranged in the inside of the housing of valve body, but it is located at outside, now, alarm can detect the air pressure in air cavity by barometer, and namely the air pressure in all-vanadium flow battery fluid reservoir, reports to the police when barometrical numerical value reaches setting value.
As preferred scheme, the housing 11 of described valve body 1 is structure as a whole with the housing of defecator 2, one sidewall 22 of the sidewall and defecator 2 that are specially valve body 1 can be one, and the anti-explosion valve structure for all-vanadium flow battery so making the present invention is compacter.
Defecator 2 is provided with roof 23, can prevent dust from entering filtrate, be provided with air vent 24, by the gas discharging after filtered process to air between a sidewall 22 and the roof 23 of defecator 2.In the present embodiment, roof 23 is made up of symmetrical two parts, and outlet passageway is from the middle part of roof 23 through the liquid level of the filtrate extending in filter chamber.
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art are in the essence and protection domain of the present invention, and various amendments or equivalent replacement that the present invention is made also are within the scope of the present invention.
Claims (10)
1. the explosion-proof valve for all-vanadium flow battery, it is characterised in that including:
Valve body, described valve body includes housing and the first sealing member being located in described housing, the outer wall of described first sealing member coordinates with described housing seal, described first sealing member is limited axially with respect to described housing, and the described end face of first sealing member one end and the internal partial wall of described housing surrounded air cavity jointly；The wall of described housing is provided with the gas allowing described all-vanadium flow battery to produce and enters the described air inlet crossing air cavity and allow described gas to flow out the described gas outlet crossing air cavity；Described first sealing member has guide rail hole, described valve body also includes the second sealing member, described second sealing member has bar portion and head, and described bar portion penetrates described guide rail hole and can move in described guide rail hole, and the outer wall in described bar portion coordinates with the inner wall sealing of described guide rail hole；Described valve body also includes elastic component, under the effect of described elastic component, the head of described second sealing member seals described air inlet, when the described gas accumulating in described air inlet place overcomes the active force of described elastic component, the head of described second sealing member leaves described air inlet and allowed gas into air cavity and passed through the gas outlet outflow of air cavity；
Defecator, described defecator has the filter chamber holding alkaline filter liquid, and described filter chamber is communicated by the gas outlet of outlet passageway with described valve body.
2. the explosion-proof valve for all-vanadium flow battery according to claim 1, it is characterised in that described valve body is additionally included in the described air pressure crossed in air cavity and exceedes the alarm of setting value alarm.
3. the explosion-proof valve for all-vanadium flow battery according to claim 2, it is characterized in that, the described explosion-proof valve for all-vanadium flow battery also includes the top cover being positioned at described shell one end, this end of described housing is relative with the one end being provided with air cavity, described alarm is located in described top cover, described alarm includes battery, buzzer, wire and touch switch, and the tentacle of described touch switch can connect with battery and buzzer under the effect of described elastic component so that buzzer rings.
4. the explosion-proof valve for all-vanadium flow battery according to claim 3, it is characterised in that described elastic component is positioned at the bar portion of the orbit hole of described first sealing member, one end and described second sealing member and offsets, and the other end and described touch switch offset.
5. the explosion-proof valve for all-vanadium flow battery according to claim 4, it is characterised in that described top cover makes described elastic component to be replaced with described housing is detachably connected.
6. the explosion-proof valve for all-vanadium flow battery according to claim 5, it is characterized in that, described touch switch is provided with positioning convex towards the side of described second sealing member, and described elastic component is compression spring, and the one end of described compression spring is enclosed within described positioning convex.
7. the explosion-proof valve for all-vanadium flow battery according to any one of claim 1-6, it is characterized in that, the inwall of described valve body housing is provided with the spacing preiection for described first sealing member carries out axial limiting, and described spacing preiection offsets near described one end crossing air cavity with described first sealing member.
8. the explosion-proof valve for all-vanadium flow battery according to any one of claim 1-6, it is characterised in that the air inlet of described valve body is communicated by inlet channel with the fluid reservoir of described all-vanadium flow battery.
9. the explosion-proof valve for all-vanadium flow battery according to any one of claim 1-6, it is characterised in that described valve body and defecator are structure as a whole.
10. the explosion-proof valve for all-vanadium flow battery according to any one of claim 1-6, it is characterised in that be provided with air vent between a sidewall and the roof of described defecator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169577.4A CN105789517B (en) | 2016-03-22 | 2016-03-22 | A kind of explosion-proof valve for all-vanadium flow battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169577.4A CN105789517B (en) | 2016-03-22 | 2016-03-22 | A kind of explosion-proof valve for all-vanadium flow battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105789517A true CN105789517A (en) | 2016-07-20 |
| CN105789517B CN105789517B (en) | 2018-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610169577.4A Active CN105789517B (en) | 2016-03-22 | 2016-03-22 | A kind of explosion-proof valve for all-vanadium flow battery |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020220486A1 (en) * | 2019-04-29 | 2020-11-05 | 比亚迪股份有限公司 | Explosion-proof valve, battery pack, and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2257079Y (en) * | 1996-05-16 | 1997-06-25 | 黎福根 | Explosion-proof safety exhaust valve for sealed battery without maintaining |
| CN2689469Y (en) * | 2004-03-22 | 2005-03-30 | 舟山市虹达特种橡胶制品有限公司 | Safety valve of free-maintaining valve-controlled sealing plumbous acid accumulator |
| JP2010073541A (en) * | 2008-09-19 | 2010-04-02 | Toshiba Shomei Precision Kk | Sealing device and sealed container |
| CN103390738A (en) * | 2012-05-25 | 2013-11-13 | 骆驼集团华中蓄电池有限公司 | Safety valve of storage battery |
-
2016
- 2016-03-22 CN CN201610169577.4A patent/CN105789517B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2257079Y (en) * | 1996-05-16 | 1997-06-25 | 黎福根 | Explosion-proof safety exhaust valve for sealed battery without maintaining |
| CN2689469Y (en) * | 2004-03-22 | 2005-03-30 | 舟山市虹达特种橡胶制品有限公司 | Safety valve of free-maintaining valve-controlled sealing plumbous acid accumulator |
| JP2010073541A (en) * | 2008-09-19 | 2010-04-02 | Toshiba Shomei Precision Kk | Sealing device and sealed container |
| CN103390738A (en) * | 2012-05-25 | 2013-11-13 | 骆驼集团华中蓄电池有限公司 | Safety valve of storage battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020220486A1 (en) * | 2019-04-29 | 2020-11-05 | 比亚迪股份有限公司 | Explosion-proof valve, battery pack, and vehicle |
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| Publication number | Publication date |
|---|---|
| CN105789517B (en) | 2018-03-20 |
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Effective date of registration: 20220718 Address after: 511470 No.268, Shadong street, Xinsha village, Dagang Town, Nansha District, Guangzhou City, Guangdong Province Patentee after: GUANGZHOU ZHIYUAN NEW MATERIAL TECHNOLOGY CO.,LTD. Address before: 511450 No. 104, building 4, fumen garden, No. 290, Shinan Road, Huangge Town, Nansha District, Guangzhou, Guangdong Province Patentee before: GUANGDONG WEIYABANG NEW ENERGY TECHNOLOGY Co.,Ltd. |