449results about "Electrolyte stream management" patented technology

The invention discloses a flow battery system and a temperature control method thereof. A positive electrode heater and a positive electrode cooler which are used as a positive electrode temperature control assembly are arranged in a positive electrode electrolyte conveying and temperature management unit, and a negative electrode heater and a negative electrode cooler which are used as a negative electrode temperature control assembly are arranged in a negative electrode electrolyte conveying and temperature management unit. Closed-loop or open-loop management is carried out on the positive electrode temperature control assembly and the positive electrode in-pile or out-pile temperature or the temperature adjusting rate of the positive electrode in-pile or out-pile temperature, and closed-loop or open-loop management is carried out on the negative electrode temperature control assembly and the negative electrode in-pile or out-pile temperature or the temperature adjusting rate of the negative electrode in-pile or out-pile temperature, so that the temperature and the temperature change rate can be effectively controlled. Through the implementation of the invention, the system temperature management can be finer, the adaptability of the system under different conditions is improved, the battery performance and the system efficiency can be improved, the operation mode can be adjusted according to requirements in the operation process, and the application is more flexible; the system operation reliability can be enhanced, the system life is prolonged, and the system efficiency is improved.

The invention discloses a flow battery system and a temperature management method thereof, the flow battery system has indirect cyclic heating and cooling functions by arranging a two-stage heat exchange component and an auxiliary component, and the temperature of the flow battery system can be controlled by interlocking the indirect heating component or the cooling component and the auxiliary component with a pre-stack or post-stack temperature value. The preheating, heat dissipation and low-temperature protection of the positive or negative electrolyte in the standby process, the operation process and the long-time shutdown process of the flow battery system are realized; the heating component, the cooling component and the pre-stack temperature or the post-stack temperature can be subjected to double-closed-loop interlocking control, so that the heating rate or the cooling rate can be controlled. Through the implementation of the method, the uniformity of a temperature field in the electrolyte heat exchange process of the system is improved, the problems of decomposition or precipitation of active reaction substances and the like caused by overlarge local temperature difference of the electrolyte are avoided, and the adaptive capacity of the system when the load is greatly changed and the environment temperature is changed in a wide range can be enhanced; and the operation stability and reliability of the flow battery system are improved.

The invention discloses a flowing type vanadium-based electric fuel energy storage and supply system which comprises an electric pile reaction module, an electrolyte driving module and a medium storage module, and the electric pile reaction module comprises an oxygen evolution reaction flowing unit, a vanadium electrolyte flowing unit and an oxygen reduction reaction flowing unit which are arranged adjacently in pairs; a first flow field plate in the oxygen evolution reaction flow unit is provided with a bionic dendritic interdigital first flow channel; a second flow field plate in the vanadium electrolyte flowing unit is provided with a bidirectional spiral interdigital second flow channel; a third flow field plate in the oxygen reduction reaction flow unit is provided with a third multi-stage fractal interdigital flow channel; the medium storage module comprises a vanadium electrolyte storage tank and a reaction medium storage tank, the vanadium electrolyte storage tank and the reaction medium storage tank are arranged on the two opposite sides of the galvanic pile reaction module, the vanadium electrolyte storage tank is connected with the second flow field plate, and the reaction medium storage tank is connected with the second flow field plate and the third flow field plate. According to the system, the integration level of the system is improved on the basis of reducing the cost.

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 invention belongs to the technical field of redox flow batteries, and discloses an all-vanadium redox flow battery system for realizing thermal management by utilizing a heat pump technology and a control method, an electrolyte heat exchange system consists of an electrolyte storage tank, a motor and an electrolyte heat exchanger which form a closed loop, the electrolyte storage tank is filled with an electrolyte, and the motor is filled with an electrolyte heat exchanger; the refrigerant heat exchange system is composed of a heat exchange medium, a motor and a refrigerant heat exchanger which form a closed loop, an adjusting valve is arranged on a pipeline between the electrolyte heat exchange system and the refrigerant heat exchange system, the electrolyte storage tank is provided with a temperature sensor, and the control system is electrically connected with the reversing valve, the adjusting valve and the temperature sensor. One end of the reversing valve is connected with an inlet and an outlet of the compressor, and the other end of the reversing valve is connected with internal pipeline inlets of the electrolyte heat exchanger and the refrigerant heat exchanger. And heating and refrigeration are integrated into one system, so that the problem of high heat exchange energy consumption of the current all-vanadium redox flow battery system is solved, and the efficiency of the all-vanadium redox flow battery system can be effectively improved.

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 discloses a flow battery stack structure based on multi-channel and multi-layer cross flow channels and a control method thereof, the flow battery stack structure comprises single stack assemblies which are connected in series, two collector plates are respectively arranged on two sides of the plurality of single stack assemblies, two end plates are respectively arranged on the outer sides of the two collector plates, and the two end plates are respectively arranged on the outer sides of the two collector plates. Each single electric pile assembly comprises an electrode frame, bipolar plates, an electrode plate and an ion exchange membrane, and a multi-channel and multi-layer cross flow channel for uniform circulation of an electrolyte is formed between the bipolar plates and the electrode plates. The first bipolar plate, the second bipolar plate and the third bipolar plate are provided with transverse flow channels, longitudinal flow channels and cross flow channels; the electrode plates are mutually overlapped to form a multi-channel and multi-layer cross flow channel, so that the electrolyte is fully mixed and circulated in the multi-channel and multi-layer cross flow channel, and the concentric-square-shaped flow channels and the flow guide cavities on the electrode plates generate a concentric-square-shaped turbulent flow effect, so that the electrolyte and active substances are fully mixed and reacted, the electrolyte can be uniformly distributed, the concentration of the electrolyte is stable, and the reaction efficiency of the flow battery is improved.

A redox flow battery comprises: a battery cell; a tank with an electrolyte stored therein; a pipe that interconnects the tank and the battery cell; and a pump provided at the pipe, wherein the battery cell and the pump are disposed at a level higher than the tank, the redox flow battery has a supply port for introducing a gas into the pipe, and the pipe is provided such that the electrolyte is held in a suction port of the pump when the pump is stopped.

The utility model discloses an all-vanadium redox flow battery system and a non-stop capacity recovery device, and belongs to the field of redox flow batteries. The bypass pipeline is added on the basis of an existing all-vanadium redox flow battery system, a non-stop capacity recovery device for controlling the improved all-vanadium redox flow battery system is designed in a matched mode, and the capacity recovery capacity of the improved all-vanadium redox flow battery system is improved by setting battery system charging, an electrolyte temperature threshold value interval and a discharging energy threshold value and controlling a positive and negative pole loop and a liquid return bypass. And transferring the one-pole electrolyte with the high electrolyte liquid level into the one-pole electrolyte with the low electrolyte liquid level, so that the volume of the two-pole electrolyte is recovered to the initial state. According to the invention, adjustment can be rapidly completed in the process of not stopping the pump and charging and discharging, and capacity recovery is realized.

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 relates to the technical field of flow batteries, and provides a liquid mixing control method and device, a flow battery system and a storage medium. The flow battery comprises a positive electrode electrolyte circulating pipeline, a negative electrode electrolyte circulating pipeline, an electric pile, an electrolyte tank and a partition plate for partitioning the electrolyte tank into a positive electrode electrolyte tank and a negative electrode electrolyte tank, and the positive electrode electrolyte tank and the negative electrode electrolyte tank share the electrolyte tank. The liquid mixing control method comprises the following steps: determining an electrolyte volume difference in a positive electrode electrolyte tank and a negative electrode electrolyte tank; determining a liquid mixing control strategy according to the volume difference of the electrolyte; and the separator is controlled to move according to the liquid mixing control strategy for liquid mixing, so that ions in the positive and negative electrolyte rapidly recover balance, the activity of the electrolyte is improved, the effective active couple concentration in the electrolyte is increased, the battery capacity is recovered, and the charging and discharging efficiency is improved.

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.

Disclosed is an electro-synthetic or electro-energy cell, and method of operation, comprising a first gas diffusion electrode configured to generate a first gas and be in contact with and adjacent to a first gas body comprising the first gas, and a second gas diffusion electrode configured to generate a second gas and be in contact with and adjacent to a second gas body comprising the second gas. A porous capillary spacer is positioned between the first gas diffusion electrode and the second gas diffusion electrode. The porous capillary spacer is configured to be filled with a liquid electrolyte and to confine the liquid electrolyte in the porous capillary spacer by a capillary effect and whereby the liquid electrolyte has a maximum column height of more than 0.4 cm.

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.

In order to efficiently reduce the concentration of contaminants in an electrolyte liquid suitable for a redox flow battery, the electrolyte liquid (101), after passing through the negative half cells of the single cell stack (4) or of the several cell stacks, passes through positive half cells of the single cell stack or of the several cell stacks of the redox flow battery purifier (1), without passing through a second tank, via a connecting device (10) that interconnects the negative half cells and the positive half cells of a cell stack.

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.

A temperature control end plate device for a flow battery experiment relates to the technical field of flow batteries, and is improved on the basis of a common battery end plate to be designed into an S-shaped flow guide end plate with a temperature control function so as to effectively control the temperature of a battery cell and the temperature of an electrolyte. The device comprises a battery end plate which is internally provided with an S-shaped circulating liquid flow channel, and a liquid inlet and a liquid outlet of the flow channel are communicated with a temperature adjusting water tank through liquid conveying pipes. A submersible pump, a heating rod, a stirrer, a temperature sensor, a refrigeration sheet, a refrigeration fan and other components are arranged in the temperature adjusting water tank, and the heating and cooling system is controlled to work through a microcontroller so as to achieve accurate temperature adjustment. A control assembly is arranged on the front side of the box body and comprises a microcontroller, a display screen and a key panel, and a user can set and monitor the temperature in the water tank through the panel. A groove and a cover plate with heat dissipation holes are arranged on the rear side of the box body and used for fixing the refrigeration assembly and enhancing the heat dissipation effect.