CN207896214U - Vanadium cell energy saving and that stability test can be improved - Google Patents
Vanadium cell energy saving and that stability test can be improved Download PDFInfo
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- CN207896214U CN207896214U CN201820244838.9U CN201820244838U CN207896214U CN 207896214 U CN207896214 U CN 207896214U CN 201820244838 U CN201820244838 U CN 201820244838U CN 207896214 U CN207896214 U CN 207896214U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model is vanadium cell a kind of energy saving and that stability test can be improved, including positive half-cell, cathode half-cell and battery pile, wherein positive half-cell and cathode half-cell are connect with battery pile, and positive half-cell includes positive fluid reservoir, the first escape pipe, the first delivery pipe, the second delivery pipe, positive pump, third delivery pipe and the 4th delivery pipe；Cathode half-cell includes cathode fluid reservoir, third escape pipe, the 5th delivery pipe, the 6th delivery pipe, negative pump, the 7th delivery pipe and the 8th delivery pipe.By the control of the switch of valve, it can be achieved that electrolyte conveys under self-gravity action, the feed flow of electrolyte can be improved using thrust gas, reduce the output of pump, reach energy-efficient effect, escape pipe keeps gas in a safe condition always in fluid reservoir.Gas in fluid reservoir completely cuts off electrolyte and outside air, and the divalent vanadium ion in electrolyte is not oxidizable, is conducive to the stabilization of electrolyte, improves the performance of vanadium cell, improves vanadium cell efficiency for charge-discharge.
Description
Technical field
The utility model is related to electrolyte of vanadium redox battery storage equipment areas, are furthermore by using gas and electrolysis
Liquid does thrust from gravity and increases the electrolyte of vanadium redox battery fluid reservoir of electrolyte output flow, it is final realize the energy saving of vanadium cell and
Stability.
Background technology
With the increasingly exhausted and corresponding environmental problem of traditional energy, the profit of the regenerative resources such as wind energy, solar energy
With causing people widely to pay close attention to and be rapidly developed, while to ensure the stable power-supplying of regenerative resource, overcoming it intrinsic
Problem, more and more electric power storage energy storage technologies are developed and are used, wherein flow battery as extensive energy storage technology one
Kind solution.Since vanadium cell has many advantages, such as that service life is long, energy transformation ratio is high, safety and environmental protection, all-vanadium flow battery
Become research hotspot in recent years as a kind of most representative flow battery type, becomes now the rule of most development potentiality
Modelling energy storage mode.
Vanadium cell is using vanadium ion solution as the secondary cell of positive and negative electrode active material.Positive and negative pole room passes through diaphragm point
It opens, electrode is made of electrode active material and collector plate；Anode is made of V (V) and V (IV) ion sulfuric acid solution, and cathode has V
(III) it is formed with V (II) ion sulfuric acid solution.Battery charging after, positive electrode material be V (V) solion, cathode be V (II) from
Sub- solution；After electric discharge, positive and negative electrode is respectively V (IV) and V (III) solion, and inside battery passes through H+ conductions.Vanadium cell
Positive and negative anodes reaction can be expressed as follows：
Anode：
Anode：
For vanadium cell in long-term charging process, electrolyte is easy to happen dehydration.Vanadium cell was easy in charging process
It fills, overcharging can have an adverse effect to the electrolyte and battery component of vanadium cell, will produce when because overcharging more than certain voltage
The electrolysis of water and liberation of hydrogen and analysis oxygen phenomenon occurs, due to there is sulfuric acid in vanadium cell liquid, the electrolysis rate of water can be very fast, water power
Solution generate gas phase answer it is more, most of vanadium cells can all be designed as can by generate gas be discharged rapidly in air, as possible
Reduce the danger accumulated in the battery.But during electrolysis water, since hydrogen and oxygen are released in air, wave is caused
Take.Vanadium cell also will produce carbon dioxide gas in reaction, and the carbon dioxide gas generated can be also released in air.
In addition, the positive pump in vanadium cell due to being placed under acidic environment for a long time, if longtime running, is easy to influence to use the longevity
Life.
Vanadium cell in use, due to needing the gas in fluid reservoir being discharged into the external world, thus can connect with the external world
It touches, divalent vanadium ion easily aoxidizes in air, causes the unstable of electrolyte, seriously affects the performance of V electrolyte, drop
Low vanadium cell efficiency for charge-discharge.
In electrolyte transmission process, power generating apparatus of the vanadium cell just with positive pump as conveying, vanadium cell
The gravitional force of electrolyte itself be not utilized, cause the waste of energy.
Utility model content
For above deficiency, the utility model provides vanadium cell a kind of energy saving and that stability test can be improved, packet
Positive half-cell, cathode half-cell and battery pile are included, wherein positive half-cell and cathode half-cell are connect with battery pile, it is described
Positive half-cell includes positive fluid reservoir, and the cathode half-cell includes cathode fluid reservoir, and the anode half-cell further includes the
One escape pipe, the first delivery pipe, the second delivery pipe, positive pump, third delivery pipe and the 4th delivery pipe, first escape pipe
One end connection is extraneous, and the other end of first escape pipe is connected to the top of positive fluid reservoir, is set on first escape pipe
Have a first switch valve, one end of first delivery pipe is connected to the lower part of positive fluid reservoir, first delivery pipe it is another
End is connect with third delivery pipe, and first delivery pipe is equipped with the first valve, and one end and the anode of second delivery pipe store up
The lower part of flow container is connected to, and the other end of second delivery pipe is connect with positive pump, and second delivery pipe is equipped with the second valve
Door, second valve are arranged before positive pump, and one end of the third delivery pipe is connect with positive pump, the third conveying
The other end of pipe is connect with battery pile, and one end of the 4th delivery pipe is connect with battery pile, the 4th delivery pipe it is another
End is connected to positive fluid reservoir；
The cathode half-cell further includes third escape pipe, the 5th delivery pipe, the 6th delivery pipe, negative pump, the 7th conveying
One end connection of pipe and the 8th delivery pipe, the third escape pipe is extraneous, the other end and the cathode liquid storage of the third escape pipe
The top of tank is connected to, and the third escape pipe is equipped with second switch valve, one end and the cathode fluid reservoir of the 5th delivery pipe
Lower part connection, the other end of the 5th delivery pipe connect with the 7th delivery pipe, and the 5th delivery pipe is equipped with the 4th valve
Door, one end of the 6th delivery pipe are connected to the lower part of cathode fluid reservoir, the other end and negative pump of the 6th delivery pipe
Connection, the 6th delivery pipe are equipped with the 5th valve, and the 5th valve is arranged before negative pump, the 7th delivery pipe
One end connect with negative pump, the other end of the 7th delivery pipe is connect with battery pile, one end of the 8th delivery pipe with
Battery pile connects, and the other end of the 8th delivery pipe is connected to cathode fluid reservoir.
In order to further realize the utility model, the third delivery pipe is equipped with first flowmeter, the first flow
Meter is arranged between third delivery pipe and the joint and battery pile of the first delivery pipe；7th delivery pipe is equipped with second
Gauge, the second flowmeter are arranged between the 7th delivery pipe and the joint and battery pile of the 5th delivery pipe.
In order to further realize the utility model, the anode half-cell further includes the second escape pipe, second outlet
One end connection of pipe is extraneous, and the other end of second escape pipe is connected to the top of positive fluid reservoir, second escape pipe
It is equipped with third valve；Cathode pole half-cell further includes the 4th escape pipe, and one end connection of the 4th escape pipe is extraneous,
The other end of 4th escape pipe is connected to the top of cathode fluid reservoir, and the 4th escape pipe is equipped with the 6th valve.
In order to further realize the utility model, first valve, the second valve, third valve, the 4th valve, the 5th
Valve and the 6th valve are switch valve.
In order to further realize the utility model, first valve and third valve are flow control valve, described second
Valve, the 4th valve, the 5th valve and the 6th valve are switch valve.
The beneficial effects of the utility model：
1, the utility model is using the gravity of electrolyte itself as the output of powered electrolyte, compared to existing
Pump output can have more a kind of selection, under same output condition, being exported from gravity for electrolyte can be used directly, it is defeated to save pump
The energy for going out needs reaches energy-efficient effect；Under same output condition, the flow if desired exported is more than the output from gravity
Pump can be used in flow, by flow control to target flow, at this time compared to only target flow is reached with pump output, uses this reality
It is exported with novel can assign to partial discharge from gravity, saves the portion of energy of pump output, reach energy-efficient effect.
2, in the gas collection to fluid reservoir that the utility model generates vanadium cell reaction, as the power thrust of gas,
The output flow and reaction speed that electrolyte can be improved, with electrolyte from gravity together with act on, further increase electrolyte
Output flow and reaction speed.
3, the utility model completely cuts off electrolyte and outside air, when the valve is open, outside since gas is in fluid reservoir
The inlet of boundary's air is few, and as valve is closed, the gas in fluid reservoir increases, then the oxygen content in fluid reservoir is opposite subtracts
It is few, therefore divalent vanadium ion is not oxidizable, is conducive to the stabilization of electrolyte, improves the performance of vanadium cell, improves vanadium cell charge and discharge
Electrical efficiency.
4, the first escape pipe, the second escape pipe, third escape pipe and the 4th escape pipe of the utility model setting, for preventing
Only gas pressure in fluid reservoir is excessive causes dangerous situation, and the first escape pipe and third escape pipe are separately positioned on anode
On fluid reservoir and cathode fluid reservoir, the speed of vanadium cell generated reactive gas can be controlled by flow control valve at any time and gas is arranged
The velocity balance gone out makes fluid reservoir be in the use environment of safety always；Its second escape pipe and the 4th escape pipe are respectively set
On positive fluid reservoir and cathode fluid reservoir, can prevent due to the first escape pipe or/and third escape pipe occur accident cannot and
When discharge gas cause dangerous situation.
5, the positive half-cell of the utility model and the fluid reservoir lower part of cathode half-cell are both provided with two delivery pipes,
Valve is respectively provided in delivery pipe, by the switch of valve, optional there are three types of patterns, according to actual needs, may be selected therein
One mode.To increase the output flow of electrolyte, increase the reaction speed of electrolyte, then the valve in two delivery pipes can
Open；To energy saving, the output of pump can be reduced or close the output of pump, using electrolyte from the gas in gravity and fluid reservoir
Output of the thrust body as powered electrolyte；Also pump output can be only used.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Reference sign：1. positive half-cell；11. positive fluid reservoir；12. anode electrolyte；
13. positive transport portion；131. the first valve；132. the first delivery pipe；133. the second valve；
134. the second delivery pipe；135. positive pump；136. third delivery pipe；137. the 4th delivery pipe；
138. first flowmeter；14. first switch valve；15. the first escape pipe；
16. the second escape pipe；17. third valve；2. cathode half-cell；21. cathode fluid reservoir；
22. electrolyte liquid；23. cathode transport portion；231. the 4th valves；
232. the 5th delivery pipes；233. the 5th valves；234. the 6th delivery pipes；235. negative pump；
236. the 7th delivery pipes；237. the 8th delivery pipes；238. second flowmeter；
24. second switch valve；25. third escape pipe；26. the 4th escape pipe；
27. the 6th valve；3. battery pile.
Specific implementation mode
The utility model is described further referring to Fig.1.
Embodiment one
As shown in Figure 1, the present embodiment includes positive half-cell 1, cathode half-cell 2 and battery pile 3,1 He of positive half-cell
Cathode half-cell 2 is connect with battery pile 3, and wherein battery pile 3 is the prior art.
Positive half-cell 1 includes positive fluid reservoir 11, anode electrolyte 12, positive transport portion 13, the first escape pipe 15
With the second escape pipe 16.Positive fluid reservoir 11 is the placement container of anode electrolyte 12, and opposite positive fluid reservoir 11 is closed appearance
Device, when each valve is not opened, positive fluid reservoir 11 is closed container, and anode electrolyte 12 is the important composition portion of vanadium cell
Point.
Positive transport portion 13 is the conveying flow passage of electrolyte, and positive transport portion 13 can control the flow of electrolyte, is wrapped
Include the first valve 131, the first delivery pipe 132, the second valve 133, the second delivery pipe 134, positive pump 135, third delivery pipe
136, the 4th delivery pipe 137 and first flowmeter 138.First delivery pipe 132 is equipped with the first valve 131, the first delivery pipe 132
The positive fluid reservoir of one end connection 11 lower part, it is preferable that the bottom of the positive fluid reservoir of one end connection of the first delivery pipe 132 11
The other end in portion, the first delivery pipe 132 is connect with third delivery pipe 136；Second delivery pipe 134 is equipped with the second valve 133, the
Two valves 133 are located at before positive pump 135, and positive pump 135 is arranged between the second delivery pipe 134 and third delivery pipe 136,
The lower part of one end connection anode fluid reservoir 11 of second delivery pipe 134, it is preferable that one end connection anode of the second delivery pipe 134
The other end of the bottom of fluid reservoir 11, the second delivery pipe 134 is connect with positive pump 135, one end of third delivery pipe 136 and cathode
235 connection of pump, the other end of third delivery pipe 136 are connect with battery pile 3, and third delivery pipe 136 is equipped with first flowmeter
138, the back in the joint of third delivery pipe 136 and the first delivery pipe 132, first flowmeter is arranged in first flowmeter 138
138 for measuring the output flow of anode electrolyte 12, according to the switch of the flow control positive pump 135 of anode electrolyte 12 with
And the rotating speed of positive pump 135, the valve switch of the first delivery pipe 132 and the second delivery pipe 134 can also be controlled；4th delivery pipe
137 one end is connect with battery pile 3, other end connection anode fluid reservoir 11.
First escape pipe 15 is located at the top of positive fluid reservoir 11, it is preferable that the first escape pipe 15 is located at positive fluid reservoir
The one end at 11 top, the first escape pipe 15 is connected to inside positive fluid reservoir 11, and the other end connection of the first escape pipe 15 is extraneous；
First escape pipe 15 is equipped with first switch valve 14, and first switch valve 14 is used to control the gas in the positive fluid reservoir 11 of vanadium cell
The uninterrupted of body discharge, when the gas pressure in positive fluid reservoir 11 reaches 11 specified pressure-bearing value of positive fluid reservoir, first
Switch valve 14 is opened and the gas in positive fluid reservoir 11 is discharged, until the air pressure in positive fluid reservoir 11 reaches safety value,
Since the speed that gas is discharged in first switch valve 14 is more than the gas reacted generation speed, then after the gas discharge in fluid reservoir
Air pressure is easy unstable in tank, and after the air pressure in fluid reservoir is discharged, air pressure is fallen after rise, and first switch valve 14 is closed, Zhi Daozheng
Air pressure in pole fluid reservoir 11 reaches 11 specified pressure-bearing value of positive fluid reservoir, at this point, first switch valve 14 is again turned on；Anode storage
It is additionally provided with the pressure sensor (not shown in figure) for detecting the gas pressure in positive fluid reservoir 11 in flow container 11, passes through
The pressure feedback of pressure sensor can accordingly control first switch valve 14, and the first escape pipe 15 is for preventing in positive fluid reservoir 11
Gas atmosphere it is excessive and cause danger.
For second escape pipe 16 at least provided with one, the second escape pipe 16 is located at the top of positive fluid reservoir 11, it is preferable that the
Two escape pipes 16 are located at the top of positive fluid reservoir 11, and one end of the second escape pipe 16 is connected to inside positive fluid reservoir 11, and second
The other end connection of escape pipe 16 is extraneous.Second escape pipe 16 is further safety protection facility, prevents the first escape pipe 15
Gas cannot be discharged in time and cause danger, under normal circumstances, the third valve 17 in the second escape pipe 16, which is in, closes
State, when accident occurs for the first escape pipe 15 or the gas in positive fluid reservoir 11 cannot be discharged in time for the first escape pipe 15
When, the third valve 17 of the second escape pipe 16 is opened, and the gas in positive fluid reservoir 11 is discharged.
Positive fluid reservoir 11 is additionally provided with feed pipe and discharge nozzle (not shown in figure), feed pipe for electrolyte into
The switch of material, feed pipe is controlled by the valve on feed pipe；Discharge nozzle is used for the discharging of electrolyte, and the switch of discharge nozzle passes through
Valve control on discharge nozzle.
Cathode half-cell 2 is identical as positive 1 structure of half-cell.
Cathode half-cell 2 includes cathode fluid reservoir 21, electrolyte liquid 22, cathode transport portion 23, third escape pipe 25
With the 4th escape pipe 26.Cathode fluid reservoir 21 is the placement container of electrolyte liquid 22, and opposite cathode fluid reservoir 21 is closed appearance
Device, when each valve is not opened, cathode fluid reservoir 21 is closed container, and electrolyte liquid 22 is the important composition portion of vanadium cell
Point.
Cathode transport portion 23 is the conveying flow passage of electrolyte, and cathode transport portion 23 can control the flow of electrolyte, is wrapped
Include the 4th valve 231, the 5th delivery pipe 232, the 5th valve 233, the 6th delivery pipe 234, negative pump 235, the 7th delivery pipe
236, the 8th delivery pipe 237 and second flowmeter 238.5th delivery pipe 232 is equipped with the 4th valve 231, the 5th delivery pipe 232
One end connection cathode fluid reservoir 21 lower part, it is preferable that the bottom of the positive fluid reservoir of one end connection of the 5th delivery pipe 232 11
The other end in portion, the 5th delivery pipe 232 is connect with the 7th delivery pipe 236；6th delivery pipe 234 is equipped with the 5th valve 233, the
Five valves 233 are located at before negative pump 235, and negative pump 235 is arranged between the 6th delivery pipe 234 and the 7th delivery pipe 236,
The lower part of one end connection cathode fluid reservoir 21 of 6th delivery pipe 234, it is preferable that one end connection anode of the 6th delivery pipe 234
The other end of the bottom of fluid reservoir 11, the 6th delivery pipe 234 is connect with negative pump 235；One end of 7th delivery pipe 236 and cathode
235 connection of pump, the other end of the 7th delivery pipe 236 are connect with battery pile 3, and the 7th delivery pipe 236 is equipped with second flowmeter
238, the back in the joint of the 7th delivery pipe 236 and the 5th delivery pipe 232, second flowmeter is arranged in second flowmeter 238
238 for measuring the output flow of electrolyte liquid 22, according to the switch of the flow control negative pump 235 of electrolyte liquid 22 with
And the rotating speed of negative pump 235, the valve switch of the 5th delivery pipe 232 and the 6th delivery pipe 234 can also be controlled；8th delivery pipe
237 one end is connect with battery pile 3, and the other end is connected to cathode fluid reservoir 21.
Third escape pipe 25 is located at the top of cathode fluid reservoir 21, it is preferable that third escape pipe 25 is located at cathode fluid reservoir
The one end at 21 top, third escape pipe 25 is connected to inside cathode fluid reservoir 21, and the other end connection of third escape pipe 25 is extraneous；
Third escape pipe 25 is equipped with second switch valve 24, and second switch valve 24 is used to control the gas in the cathode fluid reservoir 21 of vanadium cell
The uninterrupted of body discharge, when the gas pressure in cathode fluid reservoir 21 reaches 21 specified pressure-bearing value of cathode fluid reservoir, second
Switch valve 24 is opened, and second switch valve 24 is opened and the gas in cathode fluid reservoir 21 is discharged, until in cathode fluid reservoir 21
Air pressure reach safety value, since the speed that gas is discharged in second switch valve 24 is more than the gas of reaction and generates speed, then liquid storage
Air pressure is easy unstable in the tank after gas discharge in tank, and after the air pressure in fluid reservoir is discharged, air pressure is fallen after rise, and second opens
It closes valve 24 to close, until the air pressure in cathode fluid reservoir 21 reaches 21 specified pressure-bearing value of cathode fluid reservoir, at this point, second switch valve
24 are again turned on；The pressure sensor for detecting the gas pressure in cathode fluid reservoir 21 is additionally provided in cathode fluid reservoir 21
(not shown in figure) can accordingly control second switch valve 24 by the pressure feedback of pressure sensor, and third escape pipe 25 is used
In preventing, the gas atmosphere in cathode fluid reservoir 21 is excessive and causes danger.
For 4th escape pipe 26 at least provided with one, the 4th escape pipe 26 is located at the top of cathode fluid reservoir 21, it is preferable that the
Four escape pipes 26 are located at the top of cathode fluid reservoir 21, and one end of the 4th escape pipe 26 is connected to inside cathode fluid reservoir 21, and the 4th
The other end connection of escape pipe 26 is extraneous.4th escape pipe 26 is further safety protection facility, prevents third escape pipe 25
Gas cannot be discharged in time and cause danger, under normal circumstances, the 6th valve 27 in the 4th escape pipe 26, which is in, closes
State, when accident occurs for third escape pipe 25 or the gas in cathode fluid reservoir 21 cannot be discharged in time for third escape pipe 25
When, the 6th valve 27 of the 4th escape pipe 26 is opened, and the gas in cathode fluid reservoir 21 is discharged.
Cathode fluid reservoir 21 is additionally provided with feed pipe and discharge nozzle (not shown in figure), feed pipe for electrolyte into
The switch of material, feed pipe is controlled by the valve on feed pipe；Discharge nozzle is used for the discharging of electrolyte, and the switch of discharge nozzle passes through
Valve control on discharge nozzle.
Battery pile 3 is the prior art, its concrete structure is not shown in figure, is anode close to 11 side of anode fluid reservoir,
It is cathode close to cathode fluid reservoir 21, diaphragm is equipped between positive electrode and negative electrode, diaphragm is used for exchange reaction ion, other do not do
It specifically describes.
Vanadium cell will produce carbon dioxide gas, when overcharging, also will produce hydrogen and oxygen in reaction, generate
Hydrogen flowed in positive fluid reservoir 11 by the 4th delivery pipe 137, the oxygen generated is flowed to negative by the 8th delivery pipe 237
In pole fluid reservoir 21, the concentrated sulfuric acid water content since carbon dioxide does not react in sulfuric acid, and in electrolyte of vanadium redox battery is less, because
This carbon dioxide is largely in gaseous state, and hydrogen is not soluted in water, and oxygen is hard to tolerate in water, then 11 He of positive fluid reservoir
Gas in cathode fluid reservoir 21 increases with the increase in reaction time, and the pressure suffered by corresponding fluid reservoir can rise, electricity
Solution liquid flows to delivery pipe under the influence of air pressure, then flows to battery pile 3, after reaction, the gas of generation is distinguished with electrolyte
In the positive fluid reservoir 11 of flow direction and cathode fluid reservoir 21, circulate.To enable fluid reservoir preferably to bear gas pressure, can incite somebody to action
The thickness of the stainless steel material part of fluid reservoir thickeies, and enhances the compression resistance of fluid reservoir.
The vanadium cell fluid reservoir of original state is in air-tight state, and each valve of positive and negative electrode fluid reservoir is in closing shape
State.
Can be flow control valve or switch valve it should be noted that there are many valve types, in the present embodiment, the
One valve 131, the second valve 133, third valve 17, the 4th valve 231, the 5th valve 233 and the 6th valve 27 are switch
Valve.
In addition, it should also be noted that, each valve, including the first valve 131, the second valve 133, third valve 17,
Four valves 231, the 5th valve 233 and the 6th valve 27 and first switch valve 14 and second switch valve 24, are to automatically control
Valve, there are many automatic control modes, and the present embodiment uses automatically controlled mode.
When work, 2 simultaneously operating of positive and negative electrode half-cell, there are three types of situations：
If 1) want the flow of control electrolyte, the first valve 131 is closed, and the second valve 133 is opened, and starts positive pump
135, anode electrolyte 12 flows to the second delivery pipe 134 from positive fluid reservoir 11, via the conveying of positive pump 135, anode electricity
The flow of solution liquid 12 is controlled by first flowmeter 138, and the flow feedback through first flowmeter 138 can control positive pump 135
For output quantity to control the flow of anode electrolyte 12, anode electrolyte 12 then flows to battery pile 3 from third delivery pipe 136,
At the same time, cathode half-cell 2 does corresponding simultaneously operating with positive half-cell 1, does not repeat here, 12 He of anode electrolyte
Electrolyte liquid 22 reacts in battery pile 3, and positive and negative electrode electrolyte at this time is after the reaction of battery pile 3, the carbon dioxide of generation
Gas passes through the 4th delivery pipe 137 respectively with positive and negative electrode electrolyte and the 8th delivery pipe 237 flows to positive and negative electrode fluid reservoir,
The gas pressure in pressure sensor induction fluid reservoir in positive and negative electrode fluid reservoir, if air pressure does not reach designated value, first
Switch valve 14 and second switch valve 24 are in closed state, if air pressure reaches designated value, first switch valve 14 and second open
It closes valve 24 to open, the air pressure in positive and negative electrode fluid reservoir is made to fall back to safe range；
2) to energy saving, the first valve 131 can be opened, the second valve 133 is closed, at this point, closing positive pump 135, just
Pole electrolyte 12 under the effect of gravity, by being flowed out in positive fluid reservoir 11, by the first delivery pipe 132 and third delivery pipe 136,
The reaction of battery pile 3 is flowed to, at the same time, cathode half-cell 2 does corresponding simultaneously operating with positive half-cell 1, does not do here superfluous
It states, after the reaction of battery pile 3, the carbon dioxide gas of generation divides positive and negative electrode electrolyte at this time respectively with positive and negative electrode electrolyte
Not Jing Guo the 4th delivery pipe 137 and the 8th delivery pipe 237 flow to positive and negative electrode fluid reservoir, the pressure sensing in positive and negative electrode fluid reservoir
Device incudes the gas pressure in fluid reservoir, if air pressure does not reach designated value, first switch valve 14 and second switch valve 24 are equal
It is closed, if air pressure reaches designated value, first switch valve 14 and second switch valve 24 are opened, and positive and negative electrode liquid storage is made
Safe range is fallen back in air pressure in tank；
3) to the flow of raising electrolyte, enhance the reaction rate of electrolyte, then open the first valve 131, second
Valve 133 is opened, and starts positive pump 135, at this point, anode electrolyte 12 flows to the first delivery pipe 132 and the second delivery pipe respectively
134, third delivery pipe 136 is converged in, the flow of anode electrolyte 12 is controlled by first flowmeter 138, through first flowmeter
138 flow feedback can control the output quantity of positive pump 135 to control the flow of anode electrolyte 12, then third delivery pipe
136 electrolyte flows to the reaction of battery pile 3, and at the same time, cathode half-cell 2 does corresponding simultaneously operating with positive half-cell 1,
Here it does not repeat, positive and negative electrode electrolyte at this time is after the reaction of battery pile 3, and the carbon dioxide gas of generation is with positive and negative electrode electricity
Solution liquid passes through the 4th delivery pipe 137 and the 8th delivery pipe 237 and flows to positive and negative electrode fluid reservoir respectively, in positive and negative electrode fluid reservoir
Pressure sensor induction fluid reservoir in gas pressure, if the air pressure of positive and negative electrode fluid reservoir does not reach designated value, first
Switch valve 14 and second switch valve 24 are in closed state, if air pressure reaches designated value, first switch valve 14 and second open
It closes valve 24 to open, the air pressure in positive and negative electrode fluid reservoir is made to fall back to safe range.
In these three situations, vanadium cell may overcharge, and the positive half-cell 1 overcharged generates hydrogen, cathode half-cell 2
Oxygen is generated, the mistake that the first switch valve 14 and second switch valve 24 in positive and negative electrode half-cell 2 are accordingly discharged in fluid reservoir is calmed the anger
Body makes the air pressure in fluid reservoir be in safety value, while making reaction of the electrolyte in battery pile in positive and negative fluid reservoir substantially
In consistent state.
For overcharge conditions, there can be following measures：
1) the first valve 131 is closed, and the second valve 133 is opened, and is started positive pump 135, when overcharging, can be increased positive pump
135 output improves the feed flow and reaction rate of anode electrolyte 12, to prevent vanadium cell from overcharging, if increasing positive pump
135 output cannot solve overcharge conditions, then can open the first valve 131, using the gas pressure in positive fluid reservoir 11 with
And the gravity of anode electrolyte 12, anode electrolyte 12 flow to the first delivery pipe 132, in the second delivery pipe 134 just
Pole electrolyte 12 converges in third delivery pipe 136, at this point, the flow bigger of anode electrolyte 12, thus positive electricity can be improved
The reaction rate of liquid 12 is solved, then since more than the vanadium ion of anode electrolyte 12, the electrolysis amount of corresponding water can then be reduced, then may be used
Prevent vanadium cell from overcharging, while positive half-cell 1 operates, cathode half-cell 2 is also doing corresponding operation, so that entire vanadium
The reaction speed of battery is reached an agreement；
2) the first valve 131 is opened, and the second valve 133 is closed, and is closed positive pump 135, when overcharging, can be opened the second valve
133, positive pump 135 is opened, is adjusted by the output of positive pump 135, anode electrolyte 12 is from the second delivery pipe 134 outflow and the
Anode electrolyte 12 in one delivery pipe 132 converges in third delivery pipe 136, at this point, the flow bigger of anode electrolyte 12,
The reaction rate of anode electrolyte 12 thus can be improved, then due to more than the vanadium ion of anode electrolyte 12, the electricity of corresponding water
Solution amount can then be reduced, then can prevent vanadium cell from overcharging, and while positive half-cell 1 operates, cathode half-cell 2 is also being done accordingly
Operation so that the reaction speed of entire vanadium cell is reached an agreement；
3) the first valve 131 is opened, and the second valve 133 is opened, and is started positive pump 135, when overcharging, can be increased positive pump
135 output improves the feed flow and reaction rate of anode electrolyte 12, if the output for finally increasing positive pump 135 cannot
Overcharge conditions are solved, then water can be added to fluid reservoir by feed pipe, prevent the precipitation of the vanadium oxide caused by the reduction of moisture,
While positive half-cell 1 operates, cathode half-cell 2 is also doing corresponding operation, so that the reaction speed of entire vanadium cell reaches
At consistent.
When the gas in positive fluid reservoir 11 and cathode fluid reservoir 21 is excessive, and its corresponding first escape pipe 15 or/and
Third escape pipe 25 cannot be discharged in time, and the valve of the second escape pipe 16 and the 4th escape pipe 26 is opened at this time, by extra gas
Body is discharged.Certainly, under normal circumstances, the speed that the gas of vanadium cell reaction generates is respectively less than the first escape pipe 15 and third outlet
The velocity of discharge of pipe 25.If there is accident or have little time in the first escape pipe 15 and third escape pipe 25 one of them or the two
The gas in fluid reservoir is discharged, then has the second escape pipe 16 and the 4th escape pipe 26 discharge gas accordingly.It was vented entirely
Cheng Zhong needs to control the air pressure balance in positive fluid reservoir 11 and cathode fluid reservoir 21, and by the feedback control of flowmeter, makes
Positive half-cell 1 is consistent with reaction of the cathode half-cell 2 in battery pile 3.
In vanadium cell reaction process, the output flow of electrolyte in positive half-cell 1 and cathode half-cell 2 need to be controlled,
Keep positive half-cell 1 consistent with reaction of the cathode half-cell 2 in battery pile 3, it can be by controlling two conveyings in each half-cell
The valve switch of pipe keeps anode electrolyte 12 consistent with the output flow of electrolyte liquid 22 with the output of pump.
In addition, since electrolyte is acid very strong chemical solution, and its electrolyte is toxic, thus each valve, pipeline with
And junction should carry out sealing and anti-leakage measure, prevent electrolyte leakage.
In use, it may appear that be different from service condition described above, the present embodiment is only with wherein relatively conventional
Situation is done to illustrate, takes corresponding measure as the case may be.
Embodiment two
Since in embodiment one, the first valve 131 and the 4th valve 231 are switch valve, the output of uncontrollable electrolyte
Flow, in the present embodiment, the first valve 131 and the 4th valve 231 are flow control valve, remaining structure does not change.It uses
After flow control valve, the output flow of electrolyte in first delivery pipe 132 and the 5th delivery pipe 232 is can control, it can be further
Using the thrust from the gentle body of gravity of electrolyte, need the operation of pump control flow can be directly by flowing in embodiment one at this time
Control valve controls flow of the electrolyte in the first delivery pipe 132 and the 5th delivery pipe 232, reaches and pumps control in embodiment one
Flow, further reach energy-conserving action, can also there is more more options.The service condition of the present embodiment is similar with embodiment one, leads to
Use demand is crossed, the switch and flow of each switch valve and flow control valve are controlled, by the feedback control of flowmeter, is finally made just
Pole half-cell 1 is consistent with the flow of the electrolyte of cathode half-cell 2, ensures anode electrolyte 12 and electrolyte liquid 22 in battery
Reaction in heap 3 is consistent.
The foregoing is merely the better embodiment of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, there may be the changes of partial structurtes in implementation process, if various changes or modifications to the utility model do not depart from
The spirit and scope of the utility model, and belong within the scope of the claims and equivalents of the utility model, then this practicality
It is novel to be also intended to include these modification and variations.
Claims (3)
1. vanadium cell a kind of energy saving and that stability test can be improved, including positive half-cell, cathode half-cell and battery pile,
Middle anode half-cell and cathode half-cell are connect with battery pile, and the anode half-cell includes positive fluid reservoir, the cathode
Half-cell includes cathode fluid reservoir, it is characterised in that：The anode half-cell further includes the first escape pipe, the first delivery pipe, the
One end connection of two delivery pipes, positive pump, third delivery pipe and the 4th delivery pipe, first escape pipe is extraneous, and described first
The other end of escape pipe be connected to the top of positive fluid reservoir, and first escape pipe is equipped with first switch valve, and described first
One end of delivery pipe is connected to the lower part of positive fluid reservoir, and the other end of first delivery pipe is connect with third delivery pipe, institute
It states the first delivery pipe and is equipped with the first valve, one end of second delivery pipe is connected to the lower part of anode fluid reservoir, and described the
The other end of two delivery pipes is connect with positive pump, and second delivery pipe is equipped with the second valve, and the second valve setting exists
Before positive pump, one end of the third delivery pipe is connect with positive pump, and the other end and the battery pile of the third delivery pipe connect
It connects, one end of the 4th delivery pipe is connect with battery pile, and the other end of the 4th delivery pipe is connected to positive fluid reservoir；
The cathode half-cell further include third escape pipe, the 5th delivery pipe, the 6th delivery pipe, negative pump, the 7th delivery pipe and
One end connection of 8th delivery pipe, the third escape pipe is extraneous, the other end and the cathode fluid reservoir of the third escape pipe
Top connection is logical, and the third escape pipe is equipped with second switch valve, one end and the cathode fluid reservoir of the 5th delivery pipe
Lower part is connected to, and the other end of the 5th delivery pipe is connect with the 7th delivery pipe, and the 5th delivery pipe is equipped with the 4th valve,
One end of 6th delivery pipe is connected to the lower part of cathode fluid reservoir, and the other end and the negative pump of the 6th delivery pipe connect
It connects, the 6th delivery pipe is equipped with the 5th valve, and the 5th valve is arranged before negative pump, the 7th delivery pipe
One end is connect with negative pump, and the other end of the 7th delivery pipe is connect with battery pile, one end and the electricity of the 8th delivery pipe
The other end of Chi Dui connections, the 8th delivery pipe is connected to cathode fluid reservoir.
2. vanadium cell according to claim 1 energy saving and that stability test can be improved, it is characterised in that：First valve
Door, the second valve, third valve, the 4th valve, the 5th valve and the 6th valve are switch valve.
3. vanadium cell according to claim 1 energy saving and that stability test can be improved, it is characterised in that：First valve
Door and third valve are flow control valve, and second valve, the 4th valve, the 5th valve and the 6th valve are switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244838.9U CN207896214U (en) | 2018-02-09 | 2018-02-09 | Vanadium cell energy saving and that stability test can be improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244838.9U CN207896214U (en) | 2018-02-09 | 2018-02-09 | Vanadium cell energy saving and that stability test can be improved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896214U true CN207896214U (en) | 2018-09-21 |
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ID=63543024
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820244838.9U Expired - Fee Related CN207896214U (en) | 2018-02-09 | 2018-02-09 | Vanadium cell energy saving and that stability test can be improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896214U (en) |
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2018
- 2018-02-09 CN CN201820244838.9U patent/CN207896214U/en not_active Expired - Fee Related
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Granted publication date: 20180921 Termination date: 20200209 |