309results about "Electrolyte stream management" patented technology

The utility model provides a tubular flow battery liquid storage tank which comprises an electrolyte liquid storage tank body, a turbulent flow mixing part is arranged at the bottom of the electrolyte liquid storage tank body, the liquid outlet end of the turbulent flow mixing part is connected to a liquid outlet pipe, the electrolyte liquid storage tank body is filled with electrolyte, and the electrolyte flows to the liquid outlet pipe through the turbulent flow mixing part. And a plurality of inlet ends are arranged on the turbulent flow mixing part, and the multiple inlet ends are used for carrying out turbulent flow mixing on the electrolyte filled in the electrolyte storage tank body. According to the tubular liquid storage tank for the flow battery disclosed by the utility model, a plurality of inlet ends are arranged aiming at a square groove liquid storage tank which is most commonly used by a prefabricated cabin type flow battery, so that an electrolyte can form vortexes in a plurality of areas in a flowing process in the tank, and the electrolyte can be fully mixed to reduce flowing dead zones; the mixing degree and turbulence degree of liquid in the tank are improved, a flowing dead zone is avoided, and the utilization rate of electrolyte is improved.

The invention discloses an all-vanadium redox flow battery positive and negative electrode storage tank liquid level automatic balance control device which comprises a positive electrode electrolyte storage tank, a negative electrode electrolyte storage tank and a galvanic pile, a first circulation loop is formed between the positive electrode electrolyte storage tank and the galvanic pile, and a second circulation loop is formed between the negative electrode electrolyte storage tank and the galvanic pile. Venturi tubes are arranged on the positive electrode electrolyte return pipeline and the negative electrode electrolyte return pipeline, liquid pumping holes of the Venturi tubes are communicated with the negative electrode electrolyte storage tank and the positive electrode electrolyte storage tank through an electrolyte pumping pipeline, and a liquid level monitoring device is arranged on the electrolyte pumping pipeline. The venturi tube is communicated with the electrolyte suction pipeline, and redundant electrolyte in one electrolyte storage tank is sucked into the other electrolyte storage tank by means of pressure difference generated by the venturi tube, so that the design of the positive and negative electrolyte storage tanks is not limited by the relative height of the electrolyte level, and the space of the storage tanks can be fully utilized; the integration level of the battery system is improved, and the occupied area is reduced.

The invention relates to a liquid flow battery electrolyte storage device, and relates to the technical field of liquid flow battery electrolytes.The liquid flow battery electrolyte storage device comprises a tank shell and a heat exchange pipe, a spiral storage pipe barrel arranged in the vertical direction is arranged in the tank shell, electrolyte is arranged in the storage pipe barrel, the storage pipe barrel is connected with a liquid pump, the heat exchange pipe is spiral, and the heat exchange pipe is connected with the liquid pump. The storage pipe barrel is arranged vertically in a spiral mode and arranged outside the storage pipe barrel in a sleeving mode, heat exchange liquid is arranged in the heat exchange pipe, the heat exchange pipe is connected with a liquid supply circulating device, the flowing direction of the electrolyte is opposite to that of the heat exchange liquid, the storage pipe barrel is vertically arranged in a spiral mode, the electrolyte in the storage pipe barrel can form ordered layering in the storage pipe barrel, and therefore the heat exchange effect is improved. According to the utility model, the generation of a flowing dead zone is avoided, the occurrence of a side reaction, namely a hydrogen evolution reaction, caused by the mixing of two different ions is also reduced, the heat exchange area is increased, countercurrent flow heat exchange is realized, and the heat exchange efficiency of the device is further ensured.

The present invention provides a dendrite-free zinc-based flow battery. The flow battery includes an anode integrated with a first collector, a cathode integrated with a second collector, a first storage tank comprising catholyte, a first pump connects the cathode and the first storage tank, a second storage tank comprising anolyte and liquid eutectic alloys, a second pump connects the anode and the second storage tank, and a separator to prevent direct contact between the anolyte and the catholyte. The room-temperature gallium-based liquid metals (Ga-LM) alloys enable zinc-based flow batteries (Zn-FBs) to achieve unparalleled areal capacity and exceptionally long cycle life.

The invention relates to the technical field of electrolyte repair, in particular to an online electrolyte repair device and method. The device is used for repairing the vanadium battery electrolyte with unbalanced valence state. The device comprises a first storage tank, a repairing electric pile and a flow direction adjusting assembly, the first storage tank is used for containing repair liquid; the repairing electric pile comprises a positive electrode side and a negative electrode side which are separated by a diaphragm; the positive electrode side is provided with a first interface and a second interface, and the first interface and the second interface are both connected to the first storage tank; the negative electrode side is connected to a second storage tank for containing the electrolyte to be repaired in the vanadium battery energy storage system; and the flow direction adjusting assembly is used for adjusting the flow direction of the repairing liquid in the positive electrode side. According to the device, the carbon felt structure and the repairing liquid circulation mode are optimized, so that the discharge of reaction gas in the repairing electric pile can be promoted, and the repairing efficiency of the vanadium battery electrolyte is further ensured.

The invention discloses a flow battery system architecture and a method for realizing electrolyte temperature regulation and control, electrolyte small circulation loops are respectively added in a positive electrode electrolyte loop and a negative electrode electrolyte loop, so that the use requirements under various temperature conditions are met, the temperature of electrolyte entering a galvanic pile is quickly and economically controlled, and the service life of the flow battery system architecture is prolonged. The reliability and the economical efficiency are improved, and the risk of various failures of the flow battery system is reduced.

The invention relates to the technical field of battery filling, in particular to a movable flow battery filling device control system and method, and the system comprises a buffer tank, a filling control module and a controller; the buffer tank is used for receiving incoming materials through a plurality of feed ports; the filling control module is positioned on the buffer tank, a connecting pipeline of the buffer tank and the target liquid storage tank and the target liquid storage tank, and is used for receiving a control signal of the controller and controlling electrolyte conveying; the controller is used for receiving a flow meter signal on the pipeline and a target liquid storage tank liquid level meter signal, calculating the capacity of the electrolyte flowing into the target liquid storage tank, and sending a control signal to the buffer tank and the filling control module according to the capacity of the electrolyte flowing into the target liquid storage tank and the capacity of the target liquid storage tank; and the filling speed of the electrolyte is subjected to segmented proportional adjustment. According to the invention, the accuracy of the perfusion amount can be ensured.

A redox flow battery (1) comprising a cell arrangement (2), a control device (5), and two electrolyte circuits, wherein each electrolyte circuit comprises a tank (3) for storing electrolyte fluid, a piping system, and a pump (4) for circulating electrolyte fluid in the electrolyte circuit, and wherein the piping system comprises a supply line (6.1) from the tank (3) to the cell arrangement (2) and a return line (6.2) from the cell arrangement (2) to the tank (3), and wherein the pump (4) is arranged in the supply line, characterized in that each electrolyte circuit comprises an additional piping line (7) and a shut-off valve (8), wherein the shut-off valve (8) is arranged in the additional piping line (7), and wherein the additional piping line (7) branches off at a first end from the supply line (6.1) in the direction of flow of the electrolyte fluid downstream of the pump (4) and at a second end into the return line (6.1).2) terminates, and wherein the control device (5) is designed to control the closing states of the shut-off valves (8) in order to improve the mixing of the electrolyte fluid stored in the tanks (3) in predetermined operating conditions.

The utility model discloses an integrated electrode and a flow battery, the integrated electrode comprises a flow guide substrate and a reaction active electrode material wrapping the outer surface of the flow guide substrate, the reaction active electrode material is a flexible structure, the flow guide substrate comprises concave areas and convex areas which are alternately arranged, and the concave areas and the convex areas are arranged on the outer surface of the flow guide substrate. The inner side of the concave area and the back side of the convex area form an electrolyte flow channel, the electrolyte flow channel is provided with an electrolyte inlet and an electrolyte outlet which are exposed to the outer side of the reactive active electrode material, and the flow channel wall of the electrolyte flow channel is provided with a flow guide hole for guiding the electrolyte towards the reactive active electrode material; and the reaction active electrode material and the diversion substrate are relatively fixed to form an integrated structure of electrolyte circulation and electrochemical reaction. According to the scheme, efficient flowing of the electrolyte is guaranteed, a stable reaction interface is provided, concentration polarization is reduced, the battery efficiency is improved, meanwhile, the flow guide substrate is convenient to grab by a mechanical clamping jaw, and full-automatic stack assembly is supported.

The invention provides a temperature control method and device for a battery system and a storage medium, and the method comprises the steps: obtaining a circulation duration corresponding to the last completion of a complete charging and discharging circulation process of the battery system before a fault of a temperature sensor through a temperature adjustment device when the fault of the temperature sensor occurs, and obtaining the temperature of the battery system according to the last collection temperature of each temperature sensor; determining the current temperature of the electrolyte; the temperature adjusting device determines a current operation state according to the current temperature of the electrolyte and a preset first temperature threshold range, and the operation state comprises a refrigeration state, a heating state and a waiting state; the temperature adjusting device determines a first maintaining time length according to the current temperature of the electrolyte, the circulation time length, a preset target temperature and attribute information of the battery system on the basis of the current operation state; the temperature adjusting device runs in the current running state for the first maintenance duration so as to adjust the temperature of the electrolyte to the target temperature, so that transient running under extreme conditions can be realized, and sudden stop of a battery system is avoided.

Liquid membrane cell assemblies are disclosed. In some embodiments, the liquid membrane cell assembly includes an elongate base having opposed first and second end portions and a central portion disposed therebetween. The first and second end portions each includes an elongate body, an electrolyte channel within the body, an electrolyte port fluidly connected to the electrolyte channel, a fuel channel within the body, and a fuel port fluidly connected to the fuel channel. The central portion includes spaced and opposed first and second members that connect the bases of the first and second portions and that horizontally define an open area therebetween. The liquid membrane cell assembly additionally includes an anode adjacent the first and second members, and a cathode adjacent the first and second members such that the base is disposed between the anode and the cathode. The anode and cathode vertically define the open area therebetween.

The present invention relates to a method for electrolysis of water (1 ) by means of a device (7) comprising a reversible cell for the production of hydrogen and oxygen. A solution of potassium hydroxide (KOH) is fed into the cell at a concentration of between 35% and 55% w / v, at a temperature of between 150°C and 374°C, and in a condition of minimum pressure of between 2.2 bar and 129.1 bar. The method provides for I) preparing in the mixer the aqueous alkaline solution of KOH having a concentration of potassium hydroxide (KOH) of between 35% and 55% w / v; II) heating said aqueous alkaline solution to a temperature of between 150°C and 374°C; III) increasing the pressure to maintain the aqueous alkaline solution in the liquid phase at a minimum pressure condition of between 2.2 bar and 129.1 bar; IV) passing the water through the hydrophobic layer (3) of each electrode and reaching the respective catalyst layer (5) to catalyse a reduction phase of said hydrogen or an oxidation phase of said oxygen and the porous electrode layer (4) to carry out said reduction and said oxidation respectively; V) collecting gaseous hydrogen and oxygen released from phase IV).

The utility model discloses a vanadium-lithium combined energy storage power station system which comprises a frame body, a vanadium liquid flow unit, a lithium battery unit and a control unit, the vanadium liquid flow unit is arranged on the bottom layer of the frame body and comprises a negative electrolyte storage tank and a positive electrolyte storage tank, an electric pile and a circulating pipeline system are connected between the negative electrolyte storage tank and the positive electrolyte storage tank, and an electrolyte cooling system is arranged on the outer side of the electric pile; the lithium battery unit is arranged on the middle layer of the frame body and comprises a plurality of connected lithium battery modules, and air ducts are arranged among the plurality of lithium battery modules; the control unit is arranged on the top layer of the frame body and comprises a plurality of collecting modules, and the collecting modules are connected with the electrolyte cooling system and the air channel. According to the utility model, the rack body is arranged in a layered manner, and all units are integrated on the rack body, so that the purposes of compact structure and function integration are achieved. And the electrolyte cooling system and the air duct of the lithium battery module are connected with the acquisition module of the control unit, so that synergism of thermal management is realized.

The invention discloses a self-adaptive ballast adjustment method for a new energy ship based on a vanadium redox flow battery. The method comprises the following steps: establishing a collaborative arrangement structure of a vanadium redox flow battery and a ballast water dual system; based on the parameters of the collaborative arrangement structure, a linearization model capable of defining the relation between moment balance and the ship heeling angle and the ship heeling angle is constructed; constructing a target function for adaptive ballast adjustment of the new energy ship based on the linearization model; establishing a ballast adjustment constraint condition for the target function; based on the constructed heuristic solving strategy, the objective function is solved according to the ballast adjustment constraint condition to obtain an optimal solution, and the optimal solution is the optimal adjustment scheme of the electrolyte tank and the ballast water tank in the collaborative arrangement structure; based on the optimal solution, self-adaptive ballast adjustment of the new energy ship based on the vanadium redox flow battery is achieved. The problems that a traditional ballast system is slow in response, low in precision, uncontrollable in energy and the like, and rapid adjustment and high-precision control cannot be achieved are solved.

In redox flow batteries (RFBs), the base solvent of the electrolyte has a tendency to migrate from one electrode to the other across the barrier layer. This can result in a volume and concentration imbalance between the electrolytes that adversely affects the efficiency and capacity of the battery. Compatible electrolytes can be mixed to rebalance the system, but for incompatible electrolytes, mixing is not a viable option. To this end, the RFB herein includes a separator that recovers the base solvent from the vapor phase of one electrolyte and returns the recovered base solvent to the other electrolyte, thereby reversing the imbalance.

The invention discloses a heat management method and device for a high-power-density flow battery, and the device comprises a first-stage heat dissipation module disposed in a flow battery power box, a conveying and distribution box, and a second-stage heat dissipation module disposed in the conveying and distribution box. By arranging the conveying and distribution box, an electrolyte supply pipeline, an electrolyte primary distribution system, a cooling liquid supply pipeline and other structures are independent from the power box and the capacity box, the complexity and difficulty of pipeline arrangement in the power box and the capacity box are reduced, and heat management and overhaul and maintenance can be conveniently conducted on the power box and the capacity box; according to the thermal management method, the real-time heat dissipation demand is calculated by predicting the heat production of the flow battery in the future time period, and the output of the two-stage heat dissipation module is dynamically adjusted by comparing the real-time heat dissipation demand with the heat dissipation capacity of the two-stage heat dissipation module in the thermal management device, so that the output of the heat dissipation module is precise and minimized; the heat dissipation efficiency and the temperature control accuracy are improved, and meanwhile the heat dissipation cost is reduced.

The invention relates to a method for removing V2O5 precipitates in an all-vanadium redox flow battery and a battery system. The method comprises the following steps: S1, introducing reducing ions into a positive electrode through an introduction device, and enabling the reducing ions to react with V2O5 precipitates of the positive electrode so as to remove the V2O5 precipitates of the positive electrode. According to the scheme provided by the invention, the V2O5 precipitate in the vanadium liquid battery can be effectively removed under the condition that the original battery is not disassembled.

The invention provides a vanadium redox flow battery and a control method and device thereof. The redox flow battery comprises a power unit and an electrolyte storage tank, the electrolyte storage tank comprises a positive electrode electrolyte storage tank and a negative electrode electrolyte storage tank; a liquid level sensor is arranged on the electrolyte storage tank; the vanadium redox flow battery energy storage system further comprises a capacity recovery assembly; the capacity recovery assembly is communicated with a liquid outlet of the positive electrode electrolyte storage tank through a first liquid phase branch, is communicated with a liquid inlet of the positive electrode electrolyte storage tank through a second liquid phase branch, and is communicated with a liquid inlet of the negative electrode electrolyte storage tank through a third liquid phase branch; wherein the valence state of vanadium ions in the first electrolyte is higher than that of vanadium ions in the second electrolyte; the capacity recovery assembly is further communicated with a liquid outlet and a liquid inlet of the positive electrode electrolyte storage tank through a liquid phase circulation loop. According to the vanadium redox flow battery, part of the positive electrolyte is replaced through the capacity recovery assembly, so that the comprehensive valence state of the positive electrolyte and the negative electrolyte is maintained at 3.5 valence, and the battery capacity is recovered.

The utility model provides an electrolyte rebalancing system of an aqueous organic flow battery, which comprises the aqueous organic flow battery and an electrolyte rebalancing device, and the electrolyte rebalancing device comprises a negative electrode electrolyte rebalancing device and / or a positive electrode electrolyte rebalancing device. The electrolyte rebalancing system of the aqueous organic flow battery is simple, reasonable and compact in structure, extra electrochemical devices and extra chemical reagents are not introduced, and unbalanced electrolyte is rebalanced by designing a reserved interface and a bypass on an original battery system and introducing air into the electrolyte storage tank, so that the service life of the battery system is prolonged, and the service life of the battery system is prolonged. The problem of capacity imbalance after long-term operation of the water-based organic flow battery is solved, the service life of the water-based organic flow battery is prolonged, and the water-based organic flow battery has good application prospect and large-scale popularization potential in the field of electrolyte rebalance after long-term operation of the water-based organic flow battery.

This invention relates to the field of flow battery technology and discloses a method and system for regulating self-excited oscillation in flow batteries. By integrating a flow oscillation generator into the electrolyte circulation loop of the flow battery, the periodic vortex ring oscillation and acoustic-fluid positive feedback phenomenon generated by the flow within the resonant cavity of this device are utilized to achieve pulsating regulation of electrolyte flow rate and pressure. This fundamentally improves the convective mass transfer efficiency at the electrode / electrolyte / diaphragm interface within the flow battery stack, thereby alleviating concentration polarization at the battery reaction interface caused by factors such as uneven flow rate, thickened diffusion boundary layer, and restricted ion migration. Furthermore, this device eliminates the need for long-term, additional electrical drive and complex control components, exhibiting a simple structure and stable operation.

A redox flow battery includes a cell arrangement and a measuring apparatus for determining the charging state. The measuring apparatus comprises includes a hydraulic connecting line which connects the first tank to the second tank so that there is a permanent electrical connection between the electrolyte liquids in the two tanks. The measuring apparatus includes at least two electrodes. A first electrode is arranged directly in the positive electrolyte circuit. A second electrode is arranged directly in the negative electrolyte circuit. The redox flow battery includes a control apparatus which is designed such that it can detect a voltage difference between two electrodes.

The flow battery system includes a positively charged tank comprising a positively charged electrolyte, a negatively charged tank comprising a negatively charged electrolyte, a cell stack comprising a positive electrode and a negative electrode separated by a membrane operable to allow permeation of an ion between the positive electrode and the negative electrode, a plurality of flow tubes connecting these components, a power source operable to provide an electric current to said electrodes, a pump operable to pump electrolyte throughout the system, and a drainage tube and diverter that tie into the existing system and utilize the existing system's power source and pumps to pump electrolyte into and out of the system to allow for routine maintenance and repairs.

The invention belongs to the technical field of battery exhaust, and relates to an all-vanadium redox flow battery automatic exhaust system, which comprises an ultrasonic assembly and a conducting medium, and the degassing assembly is used for degassing the electrolyte in the all-vanadium redox flow battery stack so as to discharge bubbles in the all-vanadium redox flow battery. According to the method, an indirect ultrasonic mode is adopted, so that the ultrasonic waves can completely and uniformly act on the galvanic pile of the all-vanadium redox flow battery after penetrating through the conducting medium, and under the action of the ultrasonic waves, the electrolyte in the galvanic pile of the all-vanadium redox flow battery is cavitated or disturbed; the positive electrode electrolyte and the negative electrode electrolyte of the all-vanadium redox flow battery electric pile are respectively degassed through the degassing assembly, so that the exhaust of the all-vanadium redox flow battery is completed; the influence on the performance of the all-vanadium redox flow battery due to continuous accumulation of bubbles is avoided.

The invention relates to the field of flow battery energy storage, in particular to a flow battery energy storage system and a control method.The flow battery energy storage system comprises an energy storage unit and a control management unit, and the control method of the energy storage system comprises the following steps that S1, the system is initialized and calibrated; s2, collecting and preprocessing multi-field coupling data; s3, trend prediction and target calculation; s4, hierarchical prediction cooperative regulation and control; s5, heat management and activity collaborative optimization; s6, full life cycle health monitoring and protection; and S7, carrying out model iteration and strategy optimization. According to the method, the electrolyte activity prediction model is constructed, the prediction regulation and control layer executes advance parameter adjustment, the problem of parameter matching lag caused by postmortem response in the traditional technology is thoroughly solved, and the system always adapts to the operation requirement in advance.

The invention relates to the technical field of flow batteries, and particularly discloses a catalytic system and a catalytic method of a flow battery. The catalytic system comprises an electric pile unit used for realizing conversion between electric energy and chemical energy; the electrolyte storage unit is used for storing electrolyte and comprises a positive electrode electrolyte storage unit and a negative electrode electrolyte storage unit, and functional particles are arranged in the positive electrode electrolyte storage unit and / or the negative electrode electrolyte storage unit; the ultrasonic unit is used for promoting the functional particles to be in contact with the positive electrode electrolyte and / or the negative electrode electrolyte for electrification to generate an electrostatic field; and the circulating unit is used for realizing circulation of the electrolyte between the electrolyte storage unit and the electric pile unit. According to the flow battery catalytic system, the electron transfer process can be optimized, and the problems of slow reaction kinetics and noble metal dependence of the flow battery are solved.

This invention provides a method for enhancing the chemical reaction of a flow battery based on localized ultrasound assistance, comprising the following steps: (1) setting an ultrasonic transducer on the bipolar plates of the positive and negative half-cells of the flow battery. The position and size of the ultrasonic transducer on the bipolar plates should ensure that the area of ​​action of the ultrasound applied by the ultrasonic transducer covers the flow dead zone inside the porous electrode; (2) connecting a signal generator to the ultrasonic transducer via a power amplifier; (3) during the operation of the flow battery, turning on the signal generator and power amplifier to apply ultrasound to the flow battery through the ultrasonic transducer, thereby improving the flow rate and flow uniformity of the electrolyte in the porous electrode and enhancing the chemical reaction of the flow battery. The method of this invention can effectively improve the flow uniformity of the electrolyte inside the porous electrode, realize flexible control of the flow field inside the porous electrode of the flow battery, and reduce the ultrasonic power consumption for flow field control inside the electrode.

The invention discloses a method for producing electric energy and hydrogen peroxide by coupling an aldehyde oxidation reaction, the method comprising: providing a liquid flow fuel cell; adding the anolyte containing aldehyde compounds in the anode reservoir to the anode discharge chamber; adding the catholyte in the cathode reservoir to the cathode discharge chamber; passing air into the cathode discharge chamber and the cathode reservoir; connecting the cathode and the anode to an external load to form a loop, while generating electric energy, the aldehyde compounds are oxidized to corresponding acids, while generating hydrogen peroxide; wherein, the cathode electron carrier includes at least one of anthraquinone, polyanthraquinone, anthraquinone 2 carboxylic acids, and 2 ethyl anthraquinone; or, the catholyte includes a redox electrolyte, and the redox electrolyte includes at least one of anthraquinone 2 sulfonic acid, anthraquinone 2,7 disulfonic acid. Thus, the present invention carries out the reaction of aldehyde generation acid in the form of a fuel cell, and the reaction conditions are mild, and while generating acid, the co-production of electric energy and hydrogen peroxide can be achieved.

An electrochemical reactor, which may be a half-cell of a rechargeable battery, comprises a liquid electrolyte which is pumped through the half-cell and has an electrochemical system in which a solid is deposited at an electrode while electric current is flowing. The liquid comprises a high molecular weight polymer or a viscoelastic surfactant enabling elastic turbulence to occur and the half-cell is configured to compel through flow to make changes in direction, so that elastic turbulence occurs, enhancing mass transport through the liquid and reducing overpotential at the electrode, which enhances uniformity of deposited solid and inhibits parasitic reactions.

The utility model relates to a multifunctional metal air fuel cell device which is characterized by comprising an outer shell, an air electrode and a magnesium alloy plate group, when the multifunctional metal air fuel cell provided by the utility model is used as a power supply of the emergency LED lamp, the cell can be quickly activated in emergency only by adding simple electrolyte, such as saline water, so that the requirement of emergency rescue can be met, and the multifunctional metal air fuel cell can also be used as a camping lamp for a long time; importantly, in the whole life cycle of the magnesium air fuel cell, electrolyte can be supplemented for multiple times, the service life of the product is greatly prolonged, and the requirement for long-time illumination under the condition that charging cannot be carried out can be met.

The invention relates to a device for electrochemically balancing an electrolyte of a redox flow battery, a redox flow battery system device, a method of use and use thereof.