CN207426029U - A kind of flow battery pulsed charge-discharge system for improving electrolyte utilization rate - Google Patents
A kind of flow battery pulsed charge-discharge system for improving electrolyte utilization rate Download PDFInfo
- Publication number
- CN207426029U CN207426029U CN201721494006.4U CN201721494006U CN207426029U CN 207426029 U CN207426029 U CN 207426029U CN 201721494006 U CN201721494006 U CN 201721494006U CN 207426029 U CN207426029 U CN 207426029U
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- charge
- flow battery
- discharge
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model discloses a kind of flow battery pulsed charge-discharge systems for improving electrolyte utilization rate, belong to new energy energy storage field.An intermittent pulse signal cut-off is being inputted to pulsed timed power switch, charge-discharge system is made no longer constantly to charge to the electrolyte in flow battery, but is transformed to intermittent charging.In the period do not charged, circulating pump still continuous service until reaching charge cutoff voltage, completes charging process and simultaneously enters discharge process.In discharge process, also make pulsed timed power switch is intermittent to cut-off, keep the intermittent electric discharge of electrolyte, until reaching discharge cut-off voltage, complete discharge process.Thus a charge and discharge cycles are formed.Except the contradiction between balance concentration polarization and pump work can be reached in the utility model, moreover it is possible to reduce the difference of electrolyte state-of-charge between pile and fluid reservoir, improve the utilization rate of electrolyte.
Description
Technical field
The utility model belongs to new energy energy storage field, and in particular to a kind of flow battery arteries and veins for improving electrolyte utilization rate
Rush formula charge-discharge system.
Background technology
In recent years, it is also all with day to the demand of the energy with the development of human being's production and the continuous improvement of living standard
Increase.However, limited non-regeneration energy can not ensure the needs of human kind sustainable development, traditional energy based on fossil energy
Source Supply Structure has become the bottleneck for restricting socio-economic development.Therefore, optimize energy source use structure, develop renewable new energy
Source becomes the hot spot that the world pays close attention to and studies jointly.
However, the utilization of new energy is limited by time and external environment, cause its stability and continuity poor, simultaneously
Also more serious impact can be generated to power grid.Therefore, it is necessary to configure corresponding energy storage device in network system, filled in the energy
Electric energy is stored when sufficient, is generated electricity by way of merging two or more grid systems when electricity lacks, adjusts the imbalance between supply and demand of the energy, peak load shifting is realized, and then realizes energy
The efficient of source exports using with the electric energy of stable and continuous.
Extensive high-efficiency energy-storage technology is to realize the key technology that renewable energy power generation scale utilizes.Redox flow
Galvanic battery is to be most suitable for being applied to one of the extensive energy storage technology in renewable new energy field at present.Redox flow batteries
Concept proposed earliest by L.H.Thaller, in recent years, research and development, engineering and industrialization also constantly obtain it is important into
Exhibition, shows huge application prospect in extensive technical field of energy storage.It is different with traditional energy-storage system, oxidation solution galvanic electricity
The active material in pond is dissolved in its electrolyte, and is stored in external fluid reservoir.Traditional flow battery structure is by two Xun Huans
Positive and negative anodes electrolyte is transferred to the pile region of battery by pump from fluid reservoir respectively, when electrolyte flows through electrode zone, in electrode
Occur to mutually convert process between chemical energy and electric energy on surface, so as to fulfill the mutual conversion between electric energy and chemical energy,
Achieve the purpose that energy storage.
The pile of flow battery overlaps assembling by several sections of or tens of section single batteries in the way of filter press.Each battery list
Member all includes two half-cells, and forming component has：Solid electrode, bipolar plates, liquid flow frame and end plate.Between two half-cells
Amberplex is clipped, single battery is divided into positive and negative electrode two reaction zones domain, rising allows proton exchange, prevents other reactions
Ion and the effect of foreign ion migration.Solid electrode for electrochemical reaction carry out provide reacting environment, electrode area is got over
Greatly, discharge and recharge reaction rate is bigger, and corresponding power is also higher.Partition plate between two adjacent single batteries is known as double
Pole plate.Flow battery system is protected by pile, electrolyte, electrolyte fluid reservoir, circulating pump, pipeline, ancillary equipment instrument and detection
Protect equipment composition.Electrolyte fluid reservoir is respectively used to hold positive and negative anodes electrolyte, and is equipped with two circulating pumps and is used in closing
It is each half-cell unit transportation electrolyte in pipeline.During charging, the state-of-charge (SoC) of battery increases, during electric discharge, battery
State-of-charge (SoC) reduces.
In battery charge and discharge process, the amount of reactivity object continuously decreases in electrolyte, especially in charge and discharge latter stage,
Reactivity object concentration is very low, and when charge and discharge blanking voltage scope is higher, the confession of reactivity object easily occurs in charge and discharge latter stage
Should be insufficient, mass transfer can be caused to deteriorate, cause larger concentration polarization, reduce battery efficiency.To ensure the in liberal supply of reactant,
The minimum value that can obtain flow of electrolyte by theoretical calculation is：
In formula：I is charging and discharging currents, A；F is Faraday constant, about 96485C/mol；SoC is the charged shape of battery
State can be learnt according to active ion to be reacted in electrolyte and the calculating of the ion concentration of generation.
The actual flow of electrolyte is：
Q=fac × Qmin
In formula：Fac is rate factor dimensionless constant.
However not The faster the better for the flow velocity of electrolyte, when reaching the certain flow rate upper limit, improving flow velocity cannot be further
It reduces the concentration polarization loss of battery or improves battery efficiency, pump work can be increased considerably instead, consume unnecessary electric energy, it is right
The service life of entire battery system also has a certain impact.Therefore, in practical applications, it is 4~20 generally to take fac, dense to reconcile
Contradiction between difference polarization and pump work, keeps higher battery efficiency.
However, current flow optimization model only considered the contradiction between the concentration polarization of flow battery and pump work, neglect
The difference of the electrolyte state-of-charge between pile and storage tank is omited.Applicant passes through the study found that in flow battery charge and discharge
During, the state-of-charge (SoC) of electrolyte will be different between pile and storage tank, especially in the case of low flow velocity
Difference between the two can be clearly.Such as in the case of the electrolyte of 1.6mol/L is used in all-vanadium flow battery, if
During flow rate coefficient fac=0.5, the state-of-charge maximum difference between storage tank and pile is up to more than 0.8mol/L.When
During the electrolyte outflow pile of highly charged state, the electrolyte of meeting state-of-charge low with storage tank mixes, and during this
Time difference can cause the state-of-charge of electrolyte in storage tank can the permanent state-of-charge less than electrolyte in pile.When flow velocity very
When small, difference will be clearly.Since the charge and discharge blanking voltage of battery is all charged according to what is collected in pile
What state was judged, therefore, this species diversity will seriously affect the utilization rate of electrolyte.In other words, when electrolyte in pile
State-of-charge when being already higher than charge cutoff voltage, the state-of-charge of electrolyte is also very low in storage tank, this just has exhausted big portion
The electrolyte divided is not utilized, even if in the case of high flow rate, such case can not be solved thoroughly.By
This, seeking to reduce or eliminate the method for electrolyte state-of-charge (SoC) difference between pile and storage tank seems particularly urgent.This reality
The utilization rate of electrolyte can be not only improved under any rate conditions with the new method, it can also be in the situation of low flow velocity
The current density of charging can be improved down, to improve the response performance of flow battery.
Traditional flow battery using two storage tanks the method for operation：First, added in positive and negative anodes electrolyte fluid reservoir
Isometric electrolyte, battery carry out charging process first after bringing into operation, positive and negative anodes electrolyte is entered respectively by circulating pump
The pile region of battery, and redox reaction occurs at the electrode surface, make the state-of-charge (SoC) of electrolyte increase, with
The increased electrolyte outflow pile of state-of-charge (SoC) afterwards, comes back in positive and negative anodes electrolyte fluid reservoir, respectively with fluid reservoir
In low state-of-charge (SoC) electrolyte mixing, the cycling of electrolyte is carried out with this, is cut until the voltage in pile reaches charging
Only voltage.Discharge process is then carried out, the state-of-charge (SoC) of electrolyte is continuously decreased, put until the voltage in pile reaches
Electric blanking voltage completes a charge and discharge cycles.Under this method of operation, if flow velocity is too low, reactivity object supplies in pile
Should be insufficient, concentration polarization increase causes battery efficiency to reduce, and flow velocity is excessively high, can make the pump work of system increase, and can equally reduce
The efficiency of battery system.
In order to balance the contradiction between concentration polarization and pump work, current research be mostly by way of adjusting flow into
Row optimization.Related technical personnel further investigate, and following technology occur：
The patent of invention of Application No. CN201010210100.9 disclose a kind of all vanadium flow energy-storage battery system and its
Flow of electrolyte step control strategy, by different electrolytes temperature range, single battery voltage section, current density section into
Row is tested, and on the basis of the energy efficiency and power consumption that consider all vanadium flow energy-storage battery system, determines different electrolytes temperature
Section, single battery voltage section, the optimal flow of electrolyte of current density section are spent, and is adjusted and pumped by Inverter Based on Single Chip Microcomputer
Working frequency and flow, ensure all vanadium flow energy-storage battery system run under the flow of electrolyte of selection.
The patent of invention of Application No. CN201410746201.6 discloses a kind of all-vanadium redox flow battery system electrolysis liquid stream
Optimal control method is measured, by proposing that a kind of segmentation in battery charge and discharge process increases the control strategy of flow of electrolyte,
In cell operation, according to the charging and discharging state value SOC that charging and discharging state monitor gathers, the electrolysis liquid streams of needs is calculated
Amount adjusts the working frequency of centrifugal pump by frequency converter, ensures that all-vanadium redox flow battery system is run under the flow of selection.
However, Yi Shang patent only pays attention to the contradiction reconciled between balance concentration polarization and pump work, electricity is had not focused on
The difference of electrolyte state-of-charge (SoC) between heap and fluid reservoir.Even if under higher flow velocity, this species diversity still no
To thoroughly solving.Also, this mode for adjusting flow is doomed to prevent flow battery system from being run under relatively low flow velocity,
There are certain pump work losses.At present, low-down current density can only be also taken in the state of low flow velocity, is ensured in pile
The supply of reactivity object is unlikely to very few.
Also related technical personnel study the method for operation of pump.There is following technology：
The patent application of Application No. CN201410241236.4 is disclosed between a kind of fluid-flow pump of lithium ion flow battery
It knocks off and makees automatic controller, increase a fluid-flow pump discontinuous operation automatic controller for lithium ion flow battery system, it can be certainly
It is dynamic to judge lithium ion flow battery service condition, completely automatically make fluid-flow pump start and stop, discontinuous operation makes lithium ion liquid
The positive and negative anodes suspension intermittent cyclic of galvanic battery is just cycled away after finishing into the reaction of battery plus-negative plate reaction chamber.It is this
Mode can reduce liquid stream pump operation time, reduce pump work.But this form is unable to the electrolyte that accuracy controlling enters pile every time
Volume, and need to judge that there are one in system automation operation every time into the reaction time needed for the electrolyte of pile
Fixed difficulty.
The patent application of Application No. CN201610801986.1 discloses a kind of flow battery current interrupters and adopts
With the flow battery of this current interrupters, flow battery current interrupters, electric current cutout are added on the outlet conduit of electric pump
Component is in intermittent flow by liquid stream by rotation mode, and electrolyte is allowed to make electricity in intermittent sectional each pile of input
The electrolyte in liquid pipeline is solved into intermittent disconnection.What " current interrupters " described in this mode substantially also functioned to is " electricity
The effect of solution liquid intermittent cyclic ", but structure is relative complex, in pile for the monocell that electrolyte disconnects, is equivalent to
Sacrifice the output power of monocell.
The content of the invention
The purpose of this utility model is that solving problems of the prior art, and propose that a kind of raising electrolyte utilizes
The flow battery pulsed charge-discharge system of rate in the conversion of flow battery energy energy, reduces the lotus between pile and storage tank
Electricity condition (SoC) difference increases substantially the utilization rate of electrolyte.
Flow battery pulsed charge-discharge system described in the utility model is by improving battery charging and discharging system
The method of operation, except the contradiction between balance concentration polarization and pump work can be reached, moreover it is possible to reduce and be electrolysed between pile and fluid reservoir
The difference of liquid state-of-charge (SoC) improves the utilization rate of electrolyte, and it is close to be applied to electric current in the case of low flow velocity
It spends in the occasion of bigger, the advantage that there is the optimizing operating mode of flow optimization and pump not have.
Flow battery pulsed charge-discharge system described in the utility model is to be achieved through the following technical solutions：
The flow battery pulsed charge-discharge system of electrolyte utilization rate is improved, structure is as follows：Flow battery both sides
There is anode electrolyte inlet, electrolyte liquid inlet, anode electrolyte liquid outlet and electrolyte liquid on pile end plate
Liquid outlet, anode electrolyte inlet and anode electrolyte liquid outlet connect anode electrolyte fluid reservoir by infusion pipeline,
Form the circulation loop of anode electrolyte；Electrolyte liquid inlet is connected with electrolyte liquid liquid outlet by infusion pipeline
Electrolyte liquid fluid reservoir forms the circulation loop of electrolyte liquid；It is both provided with to provide electricity on the infusion pipeline
Solve the circulating pump of liquid conveying power；Agitating device is equipped in anode electrolyte fluid reservoir and electrolyte liquid fluid reservoir；Liquid stream
The external charge-discharge system of collector plate of battery, charge-discharge system includes battery charging and discharging detection device and pulsed Timing power supply is opened
It closes, pulsed timed power switch is series in the charge-discharge circuit of battery charging and discharging detection device and collector plate, is filled for controlling
The intermittent break-make of discharge circuit.
Preferably, the pulsed timed power switch is connected with for the computer of input pulse control signal.
Preferably, the agitating device is magnet rotor.
Preferably, the electric pile structure of flow battery is：It is clamped with several single-cell structure units between the PP plates of both sides, two
Pile end plate is respectively fixed with outside the PP plates of side.
Preferably, the flow battery is all-vanadium flow battery, zinc-bromine flow battery or Zn-Ni liquid battery.
Flow battery pulsed charge-discharge system described in the utility model controls pulsed timing electricity by computer
The closure of source switch and disconnection make the electric current of battery charging and discharging detection device output pulsed with this, i.e.,：Beginning-charge-stop
Machine-charging-shutdown ... electric discharge-shutdown-electric discharge-shutdown-end.In stopping process, two 6 continuous runnings of circulating pump, drop
The difference of electrolyte state-of-charge (SoC) between low battery pile and fluid reservoir reduces the concentration polarization between pile and fluid reservoir
Change.After stopping process, pulsed timed power switch is closed, and system continues charge or discharge process.Finally filling
During electric discharge cut-off, the utilization rate of electrolyte can be effectively improved, especially in the case of low flow velocity, the utilization rate of electrolyte can obtain
To being obviously improved.
The utility model compared with prior art, has following features：First, the utilization rate of positive and negative anodes electrolyte significantly increases
Add, the difference of electrolyte state-of-charge (SoC) between battery pile and fluid reservoir can be greatly lowered, reduce pile and fluid reservoir
Between concentration polarization.Second, the prolonged charge and discharge of battery can be still kept in the case of low flow velocity, it can be in low flow velocity
In the case of be applied to current density bigger occasion in, keep battery it is working properly.3rd, it is larger in the volume of fluid reservoir
In the case of, it can guarantee that liquid energy is electrolysed in fluid reservoir keeps good uniformity, avoids electrolyte mixing is uneven from being brought to battery
Influence.
Description of the drawings
Fig. 1 is that a kind of flow battery pulsed charge and discharge for improving electrolyte utilization rate in example is embodied in the utility model
The basic schematic diagram of electric system.
Fig. 2 is anode electrolyte feed liquor, the liquid outlet schematic diagram of Fig. 1 described devices in the utility model.
Fig. 3 is electrolyte liquid feed liquor, the liquid outlet schematic diagram of Fig. 1 described devices in the utility model.
Fig. 4 is the electrolyte utilization rate of the utility model corresponding device and conventional apparatus with the relation between flow rate β.
In figure：Pile end plate 1, pile PP plates 2, single-cell structure unit 3, infusion pipeline 4, anode electrolyte fluid reservoir 5,
Circulating pump 6, electrolyte liquid fluid reservoir 7, magnet rotor 8, battery charging and discharging detection device 9, pulsed timed power switch 10,
Computer 11, anode electrolyte liquid outlet 12, anode electrolyte inlet 13, collector plate 14, bolt hole 15, electrolyte liquid go out
Liquid mouth 16, electrolyte liquid inlet 17.
Specific embodiment
The utility model is further elaborated and illustrated with reference to the accompanying drawings and detailed description.In the utility model
The technical characteristic of each embodiment can carry out respective combination on the premise of not conflicting with each other.
As shown in Figures 1 to 3, in embodiment, the flow battery pulsed charge-discharge system master of electrolyte utilization rate is improved
It to be made of three parts, be broadly divided into the charge and discharge system of the pile part of battery, the outer circulating section of electrolyte and battery
System (external power supply) part.Its critical piece includes pile end plate 1, PP plates 2, single-cell structure unit 3, infusion pipeline 4, anode
Electrolyte fluid reservoir 5, circulating pump 6, electrolyte liquid fluid reservoir 7, magnet rotor 8, battery charging and discharging detection device 9, pulsed
Timed power switch 10, computer 11, anode electrolyte liquid outlet 12, anode electrolyte inlet 13, collector plate 14, bolt hole
15, electrolyte liquid liquid outlet 16, electrolyte liquid inlet 17.
Mainly (polyethylene material can be used by pile end plate 1 (stainless steel end plate can be used), PP plates 2 in the pile part of battery
Material, for ensureing battery, pretightning force is evenly distributed everywhere) and several 3 structures of single-cell structure unit, it is circumferential on pile end plate 1
Bolt hole 15 is opened up for being fastened and fixed.Multiple single-cell structure units 3 are clamped between both sides PP plates 2, are divided outside both sides PP plates 2
Pile end plate 1 is not fixed with.The quantity of single-cell structure unit 3 is unlimited.Each single-cell structure unit 3 can be divided into afflux again
Plate 14 (copper coin can be used, for gathering the charged state of monocell from bipolar plates and being converted into voltage signal, while also will be outer
The current transmission for connecing power supply enters battery, controls the charge or discharge of battery), bipolar plates (graphite cake can be used, for distinguishing
The positive and negative anodes of electrolyte simultaneously conduct electric signal), liquid flow frame, gasket seal, electrode (graphite felt can be used, for for electrolyte
Electrochemical reaction provide active region), amberplex (Nafion117 cation-exchange membranes can be used, in battery just
Cathode transfers hydrogen ion and hydrone, keeps the charge balance of battery) etc. critical pieces.
There is anode electrolyte inlet 13, electrolyte liquid inlet 17, just on the pile end plate 1 of flow battery both sides
Pole electrolyte liquid outlet 12 and electrolyte liquid liquid outlet 16, anode electrolyte inlet 13 and anode electrolyte liquid outlet 12 are equal
Anode electrolyte fluid reservoir 5 is connected by infusion pipeline, forms the circulation loop of anode electrolyte；Electrolyte liquid inlet 17
Electrolyte liquid fluid reservoir 7 is connected by infusion pipeline with electrolyte liquid liquid outlet 16, forms the cycling of electrolyte liquid
Circuit.It is both provided with to provide the circulating pump 6 that electrolyte conveys power on the infusion pipeline of anode and cathode, it is preferable to use compacted
Dynamic circulating pump realizes that flow is adjustable.Magnet rotor 8 is equipped in anode electrolyte fluid reservoir 5 and electrolyte liquid fluid reservoir 7,
For being stirred to electrolyte.The 14 external charge-discharge system of collector plate of flow battery, charge-discharge system include battery charge and discharge
Electric detection means 9 and pulsed timed power switch 10, battery charging and discharging detection device 9 are used for as power supply in circuit communication
The status informations such as voltage, battery capacity at collector plate 14 can be detected in real time simultaneously to 14 output current of collector plate.Circuit leads to
Disconnected is to be controlled by pulsed timed power switch 10 according to storage inside or the pulse signal being received externally, this implementation
Pulsed timed power switch 10 is realized using the time switch of PLC technology in example.Pulsed timed power switch 10 is connected
In the charge-discharge circuit of battery charging and discharging detection device and collector plate 14, pulsed timed power switch 10 itself cut-offs control
Circuit is whole to be cut-off, and may finally be realized according to the intermittent of the intermittent pulse control signal control charge-discharge circuit cut-off
Break-make.As shown in figure 4, the utility model corresponding device is compared with the electrolyte utilization rate of conventional apparatus, in low flow rate β
When, electrolyte utilization rate is greatly enhanced.
Based on the device, improving the method for electrolyte utilization rate is：One is being inputted to pulsed timed power switch 10
The intermittent pulse signal cut-off makes charge-discharge system no longer constantly charge to the electrolyte in flow battery, but
It is transformed to intermittent charging.In the period do not charged, the still continuous service of circulating pump 6 ensures in pile and fluid reservoir
The abundant mixing of electrolyte, to reduce the difference of electrolyte state-of-charge (SoC) between battery pile and fluid reservoir, until reach
Charge cutoff voltage completes charging process and enters discharge process.In discharge process, also make between pulsed timed power switch 10
The formula of having a rest is cut-off, and keeps the intermittent electric discharge of electrolyte, until reaching discharge cut-off voltage, completes discharge process.Thus one is formed
Charge and discharge cycles.
The specific method for improving electrolyte utilization rate is described below in detail, step is as follows：
Isometric electrolyte is added in anode electrolyte fluid reservoir 5 and electrolyte liquid fluid reservoir 7 first, and at two
A magnet rotor 8 is separately added into fluid reservoir, ensures the uniformity that electrolyte mixes in system operation.Open the circulation pump 6,
Positive and negative anodes electrolyte is made to flow in infusion pipeline 4, respectively by pile end plate 1, pile PP plates 2, anode electrolyte into
Liquid mouth 13, electrolyte liquid inlet 17 enter in the single-cell structure unit 3 in pile, and redox occurs in monocell
Reaction, the state-of-charge (SoC) of electrolyte increases after the completion of reaction, then passes through anode electrolyte liquid outlet 12 and negative electricity respectively
Solution liquid liquid outlet 16 is returned in anode electrolyte fluid reservoir 5 and electrolyte liquid fluid reservoir 7.According to the volume of positive and negative anodes electrolyte
The theoretical charging and discharging time is calculated, the theory charging and discharging time is divided into some time input computer 11
(being preferably divided into 5-20 sections), the state of control pulsed timed power switch 10 export battery charging and discharging detection device with this
The electric current of pulsed, i.e.,：Beginning-charging-shutdown-charging-shutdown ... electric discharge-shutdown-electric discharge-shutdown-end, downtime
It does not limit (being preferably 1min so as to making subject to the abundant mixing of electrolyte).When pulsed timed power switch 10 connects, electricity
Pond charge and discharge electric detection means 9 starts, to 14 output current of collector, system to be made to charge by predetermined pulse formula charge and discharge system.
And in stopping process, two 6 continuous runnings of circulating pump reduce electrolyte state-of-charge between battery pile and fluid reservoir
(SoC) difference reduces the concentration polarization between pile and fluid reservoir.Closure connects subsequent pulsed timed power switch 10 again
Logical, system continues charging process.Above-mentioned pulse process reciprocation cycle n times, when the collector plate 14 of external charge-discharge system is adopted
Integrate (preferably, charge cutoff voltage is set as 1.7V) when the voltage of battery has reached charge cutoff voltage, charge and tie
Beam starts discharge process.System with still keeping pulsed discharge process at this time, until the collector plate 14 of external charge-discharge system
Collect (preferably, it is 0.8V to set discharge cut-off voltage) when the voltage of battery has reached discharge cut-off voltage, electric discharge
Process terminates, and completes a complete charge and discharge cycles.
Embodiment described above is a kind of preferable scheme of the utility model, and so it is not to limit this practicality
It is new.Those of ordinary skill in technical field, can be in the case where not departing from the spirit and scope of the utility model
It makes a variety of changes and modification.For example, various modes of the prior art may be employed in the concrete structure of flow battery, and it is unlimited
Due to the structure described in embodiment.Therefore the technical solution that all modes for taking equivalent substitution or equivalent transformation are obtained,
Fall within the protection scope of the present utility model.
Claims (5)
- A kind of 1. flow battery pulsed charge-discharge system for improving electrolyte utilization rate, which is characterized in that flow battery both sides Pile end plate (1) on have anode electrolyte inlet (13), electrolyte liquid inlet (17), anode electrolyte liquid outlet (12) and electrolyte liquid liquid outlet (16), anode electrolyte inlet (13) and anode electrolyte liquid outlet (12) are by defeated Liquid pipeline connection anode electrolyte fluid reservoir (5) forms the circulation loop of anode electrolyte；Electrolyte liquid inlet (17) and Electrolyte liquid liquid outlet (16) connects electrolyte liquid fluid reservoir (7) by infusion pipeline, forms following for electrolyte liquid Loop back path；It is both provided with to provide the circulating pump (6) that electrolyte conveys power on the infusion pipeline；Anode electrolyte stores up Agitating device is equipped in flow container (5) and electrolyte liquid fluid reservoir (7)；The external charge and discharge system of collector plate (14) of flow battery System, charge-discharge system include battery charging and discharging detection device (9) and pulsed timed power switch (10), pulsed Timing power supply Switch (10) is series in the charge-discharge circuit of battery charging and discharging detection device and collector plate (14), for controlling charge-discharge circuit Intermittent break-make.
- 2. the flow battery pulsed charge-discharge system of electrolyte utilization rate is improved as described in claim 1, which is characterized in that The pulsed timed power switch (10) is connected with the computer (11) for input pulse control signal.
- 3. the flow battery pulsed charge-discharge system of electrolyte utilization rate is improved as described in claim 1, which is characterized in that The agitating device is magnet rotor (8).
- 4. the flow battery pulsed charge-discharge system of electrolyte utilization rate is improved as described in claim 1, which is characterized in that The electric pile structure of flow battery is：Several single-cell structure units (3) are clamped between both sides PP plates (2), are divided outside the PP plates of both sides Pile end plate (1) is not fixed with.
- 5. the flow battery pulsed charge-discharge system of electrolyte utilization rate is improved as described in claim 1, which is characterized in that The flow battery is all-vanadium flow battery, zinc-bromine flow battery or Zn-Ni liquid battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494006.4U CN207426029U (en) | 2017-11-10 | 2017-11-10 | A kind of flow battery pulsed charge-discharge system for improving electrolyte utilization rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494006.4U CN207426029U (en) | 2017-11-10 | 2017-11-10 | A kind of flow battery pulsed charge-discharge system for improving electrolyte utilization rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426029U true CN207426029U (en) | 2018-05-29 |
Family
ID=62305497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721494006.4U Withdrawn - After Issue CN207426029U (en) | 2017-11-10 | 2017-11-10 | A kind of flow battery pulsed charge-discharge system for improving electrolyte utilization rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207426029U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959038A (en) * | 2017-11-10 | 2018-04-24 | 浙江大学 | A kind of flow battery pulsed charge-discharge system and method for improving electrolyte utilization rate |
| CN109037725A (en) * | 2018-06-20 | 2018-12-18 | 浙江大学 | A kind of flow battery improving electrolyte distributing homogeneity and electrode structure and method |
| CN109713339A (en) * | 2018-12-13 | 2019-05-03 | 浙江大学 | A kind of flow battery system control method based on electric current optimisation strategy |
-
2017
- 2017-11-10 CN CN201721494006.4U patent/CN207426029U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959038A (en) * | 2017-11-10 | 2018-04-24 | 浙江大学 | A kind of flow battery pulsed charge-discharge system and method for improving electrolyte utilization rate |
| CN107959038B (en) * | 2017-11-10 | 2023-06-02 | 浙江大学 | Flow battery pulse type charging and discharging system and method for improving electrolyte utilization rate |
| CN109037725A (en) * | 2018-06-20 | 2018-12-18 | 浙江大学 | A kind of flow battery improving electrolyte distributing homogeneity and electrode structure and method |
| CN109037725B (en) * | 2018-06-20 | 2023-06-02 | 浙江大学 | Flow battery capable of improving distribution uniformity of electrolyte, electrode structure and method |
| CN109713339A (en) * | 2018-12-13 | 2019-05-03 | 浙江大学 | A kind of flow battery system control method based on electric current optimisation strategy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102299362B (en) | Electrolyte flow stepped control strategy of vanadium redox energy storage battery system | |
| CN201845830U (en) | Flow battery galvanic pile | |
| CN102244286B (en) | Flow battery system and repair device thereof | |
| CN207426029U (en) | A kind of flow battery pulsed charge-discharge system for improving electrolyte utilization rate | |
| Liu et al. | No-mixing design of vanadium redox flow battery for enhanced effective energy capacity | |
| CN104143646A (en) | Flow energy storage cell or pile running method | |
| CN109037725B (en) | Flow battery capable of improving distribution uniformity of electrolyte, electrode structure and method | |
| CN208589496U (en) | A kind of liquid flow frame and its flow battery | |
| CN107959038A (en) | A kind of flow battery pulsed charge-discharge system and method for improving electrolyte utilization rate | |
| CN105742668A (en) | Electrolyte flow optimization control method of all-vanadium redox flow battery system | |
| CN107195944B (en) | A kind of flow battery regulation method and its regulator control system, flow battery | |
| CN108110295B (en) | Energy efficiency optimization control method and system for flow battery device | |
| CN218299838U (en) | All-vanadium redox flow battery with gravity energy storage function | |
| CN203644856U (en) | Electrolyte storage device and flow battery system | |
| CN101562257A (en) | All vanadium redox flow battery structure | |
| CN207426026U (en) | A kind of four storage tank flow battery structures for improving electrolyte utilization rate | |
| CN2927331Y (en) | Fluid vanadium energy storing device | |
| CN104300169B (en) | A kind of Alkaline Zinc vanadium flow battery | |
| CN109728314A (en) | A kind of the flow battery structure and method of the magnetic-particle adhesive electrodes of externally-applied magnetic field | |
| CN109713339B (en) | Flow battery system control method based on current optimization strategy | |
| CN116364974B (en) | Electrolyte liquid storage tank and flow battery system | |
| CN107204480A (en) | Fluid cell electrolyte parameter determination method and its system, flow battery | |
| CN105702980B (en) | A kind of online control method and its system for restoring flow battery system performance | |
| CN107946617B (en) | Four-storage-tank flow battery structure and method for improving electrolyte utilization rate | |
| CN206349448U (en) | A kind of pile of redox flow batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180529 Effective date of abandoning: 20230602 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180529 Effective date of abandoning: 20230602 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |