CN114744237B - Circulation system and method for flow battery - Google Patents
Circulation system and method for flow battery Download PDFInfo
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- CN114744237B CN114744237B CN202210474390.0A CN202210474390A CN114744237B CN 114744237 B CN114744237 B CN 114744237B CN 202210474390 A CN202210474390 A CN 202210474390A CN 114744237 B CN114744237 B CN 114744237B
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- 230000008569 process Effects 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 9
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- 238000011084 recovery Methods 0.000 claims description 63
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- 238000000926 separation method Methods 0.000 claims description 20
- 238000006479 redox reaction Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 7
- 238000011835 investigation Methods 0.000 claims description 4
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- 239000002918 waste heat Substances 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 8
- 238000007086 side reaction Methods 0.000 description 7
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 7
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- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention relates to a circulating system and a circulating method for a flow battery, wherein the circulating system comprises an all-vanadium flow battery running device for providing power for a carrier, the running device comprises a battery pack and an electrolyte storage tank, wherein the circulating system separates and recovers sediment which is blocked by a positive electrolyte circulating pipeline and affects the performance of the battery caused by oxidation/reduction reaction of the inside of the battery pack suspended in the positive electrolyte, and the sediment which is precipitated in the positive electrolyte is prevented from accumulating in the positive electrolyte circulating pipeline and blocking the positive electrolyte circulating pipeline and adhering to other heat exchange pipelines arranged in the electrolyte storage tank in the charging/discharging working process of the battery, so that the heat exchange effect is prevented. The invention can effectively ensure that the flow battery can safely and effectively complete the established charge/discharge work while improving the heat exchange efficiency.
Description
Description of the division
The original basis of the divisional application is application number 202110116660.6, application date 2021, 1 month and 27, and patent application with the name of 'an all-vanadium redox flow battery management method and system', which claims priority of application number 202011554647.0, and priority date 2020, 12 months and 21.
Technical Field
The invention relates to the field of chemical energy storage battery management, in particular to a circulating system and method for a flow battery.
Background
At present, energy shortage and serious environmental pollution are the major trends of developing economic, clean and renewable energy sources under the global high attention to energy safety and environmental protection.
The existing new energy carrier mainly uses storage batteries such as lithium ions, lead-acid, nickel hydrogen and the like as power equipment, but even the storage batteries improved by scientific researchers worldwide are not satisfactory in the aspects of battery capacity, endurance time, charging time and the like.
The flow battery, in particular the all-vanadium flow battery, is used as a novel high-performance energy storage battery, and the storage battery is used as power equipment to well overcome the defects of the storage battery due to the fact that the capacity of the battery is large, the application range is wide, the recycling service life is long and the like through the fact that positive and negative electrolyte is stored and circulated separately and the redox reaction is utilized in the battery pack to convert the stored chemical energy and electric energy. The prior patent CN201610508919 and CN201420779747 both disclose that the (all-vanadium) flow battery is used as a power device of an electric automobile to provide power for the electric automobile, but in the prior art, how the (all-vanadium) flow battery as the power device is managed in the carrier is not related, and the performance of the (all-vanadium) flow battery can be consumed in the long-term frequent use of the carrier due to the fact that the battery cannot be correctly managed according to different application scenes, and meanwhile, the use safety of the carrier and even the life safety of a user can be endangered.
The prior patent CN111516556a discloses a thermal management system for a pure electric vehicle, which can complete waste heat utilization and heat management in an electric vehicle under different cold and hot requirements, but the temperature control and waste heat recovery of storable and transportable electrode liquid are still very different for an (all-vanadium) flow battery.
Chinese patent publication No. CN106463753a discloses an electrolyte circulation type battery in which the temperature of the electrolyte is easily controlled. The electrolyte circulation type battery includes a battery cell and a circulation passage that circulates an electrolyte to the battery cell. The electrolyte circulation type battery includes: a heat exchanger installed in the circulation passage and configured to cool the electrolyte; a bypass flow passage that connects an electrolyte inflow side and an electrolyte outflow side of the heat exchanger to each other so as to bypass the heat exchanger; and a flow rate variable mechanism capable of changing a flow rate of the electrolyte flowing through the heat exchanger and a flow rate of the electrolyte flowing through the bypass flow passage. However, the circulating battery can not solve the problem that the flow battery safely and effectively completes the charge and discharge work.
The Chinese patent document with publication number of CN110429299A discloses a control method and a system for the electrolyte temperature of a flow battery, wherein the control device comprises cold and hot water management equipment, heat exchange equipment, a control module and a temperature detection module; the temperature detection module is used for detecting the temperature value of the electrolyte in the all-vanadium redox flow battery; the control module is used for judging whether the temperature value meets a first set condition, if so, controlling the cold and hot water management equipment to provide target temperature heat exchange water to the first pipeline, controlling the all-vanadium redox flow battery to flow electrolyte into the second pipeline, and adjusting the temperature value of the electrolyte in the second pipeline to be within a target temperature range through the target temperature heat exchange water in the first pipeline. The invention realizes that the temperature of the electrolyte of the all-vanadium redox flow battery is controlled in a proper target temperature range in real time, thereby ensuring the safety and stability of the all-vanadium redox flow battery; in addition, the control device of the invention has the advantages of low cost, simple control, high flexibility, low energy consumption and the like. However, the invention ensures safe and stable operation of the flow battery by controlling the temperature of the electrolyte, and cannot improve the heat exchange efficiency of the electrolyte in the circulating process and avoid the blockage of a pipeline by the precipitate of the electrolyte in the electrolytic process.
Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present invention was made, the text is not limited to details and contents of all that are listed, but it is by no means the present invention does not have these prior art features, the present invention has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.
Disclosure of Invention
The invention discloses an all-vanadium redox flow battery management system which comprises an electrolyte temperature control device and a central control device.
The central control device can be programmed to: the electrolyte temperature control device is driven to perform unilateral alternating heat exchange on the positive/negative electrolyte according to the requirement of a user and/or other internal or external instructions.
The central control device can be fixed on a carrier or other facilities and used for controlling the electrolyte temperature control device so as to maintain the electrolyte temperature and further maintain the normal operation of the whole system. In the invention, for the carrier carrying the flow battery, the unilateral alternate heat exchange not only considers the user requirement to realize heating in the carrier, but also considers the obvious temperature difference of the positive/negative electrolyte in operation, and adopts a time-sharing mode to rotate for cooling, thereby ensuring the reaction temperature of the core of the battery without influencing the power output. In addition, the configuration mode of the central control device is obviously different from that of a control system of the battery core, and the central control device can meet the two-stage control requirement from the aspect of the internal and external system requirements at the system level, so that a more effective control closed loop is achieved.
The unilateral alternate heat exchange means that through carrying out real-time temperature measurement on a single positive electrode or negative electrode electrolyte, the temperature of the positive electrode electrolyte which is more prone to side reaction along with temperature change is preferably monitored to determine whether the temperature of the positive electrode electrolyte is in a preset range at any time, when the monitored temperature of the electrolyte exceeds the preset temperature range, the central control device can drive the electrolyte temperature control device to exchange heat for the positive electrode electrolyte by combining with user requirements and/or other internal or external instructions until the temperature of the positive electrode electrolyte returns to the preset temperature range, and then the central control device drives the electrolyte temperature control device to stop carrying out heat exchange for the positive electrode electrolyte and then exchange heat for the negative electrode electrolyte until the temperature of the positive electrode electrolyte exceeds the preset temperature range again.
The single sided alternating heat exchange is determined by the central control device in combination with consideration of battery performance, positive electrode precipitate condition and/or user warm/cold air demand.
The unilateral alternating-current replacement can solve the problem of data interference of the electrolyte temperature control device, which is faced by the central control device and needs to process the electrolyte temperature fed back by a plurality of real-time temperature measuring devices at the same time, and combine with user requirements and/or other internal or external instructions to drive the electrolyte temperature control device to perform the heat exchange process, so that the technical effect that the central control device can quickly and correctly select a temperature control scheme under the condition of reducing the number of devices and data interference, and simultaneously, the utilization efficiency of the waste heat in the storable and flowable positive/negative electrolyte can be obtained in the unilateral alternating-current heat exchange process with larger heat exchange temperature difference is achieved.
Compared with the temperature control technical scheme of the all-vanadium redox flow battery in the prior art, the invention aims at the central control device of the all-vanadium redox flow battery serving as the carrier power equipment, and the central control device is required to drive the electrolyte temperature control device to perform unilateral alternating heat exchange according to the user requirements and/or other internal or external instructions and other control factors far more than those related to the conventional all-vanadium redox flow battery so as to avoid data interference caused by excessive equipment.
Compared with the technical scheme of utilizing the waste heat on the surface of the battery stack of the carrier driven by electric energy in the prior art, the invention aims at recycling the waste heat which is special for the all-vanadium redox flow battery as the carrier power equipment and is different from the heat source in the prior art, for example, the waste heat in the stored electrolyte can be used for heating the electrolyte next time, and the waste heat in the flowing electrolyte can be used for hot air supply and/or cold air recycling of the carrier carrying the all-vanadium redox flow battery according to the requirements of users.
The management system comprises an all-vanadium redox flow battery operating device for powering the vehicle, and the all-vanadium redox flow battery operating device comprises a battery pack, an electrolyte storage tank and an electrolyte circulation unit.
In the heat exchange process, the central control device drives the electrolyte temperature control device according to the positive electrolyte temperature determined by the temperature control unit to heat or cool the positive/negative electrolyte by arranging matched heat exchange equipment, the electrolyte temperature control device can drive the positive/negative electrolyte to carry out unilateral alternate heat exchange by utilizing the heat exchange liquid and/or flowing gas provided by the fan by the central control device, wherein the fan is directly arranged at the downstream of an outlet of the battery pack by fully utilizing primary heat from the electrolyte, and can carry out single 180-degree encircling rotation by taking an electrolyte pipeline as a central axis according to user requirements and control an inlet/outlet to synchronously open/close/increase the opening/closing angle/reduce the opening/closing angle according to the user requirements, so that the electrolyte temperature control device driven by the central control device can achieve the aim of controlling the electrolyte to work under standard temperature working conditions so as to avoid the condition of generating excessive side reactions due to temperature anomalies.
The electrolyte temperature control device is pre-provided with at least one temperature control scheme determined by the heat exchange requirement and the user requirement, and one of the temperature control schemes is selected and applied by the central control device in combination with consideration of battery performance, positive electrode precipitate condition and/or warm air/cold air requirement of the user.
Further, when the battery performance and/or the positive electrode sediment condition and/or the warm air/cold air requirement of a user change, the central control device reselects a temperature control scheme with higher matching degree from other temperature control schemes which are replaced by the electrolyte temperature control device, and when the heat exchange requirement and/or the user requirement change, the electrolyte temperature control device provides at least one temperature control scheme for the central control device again so that the at least one temperature control scheme can be selected by combining other factors, so that the aim that the central control device analyzes to obtain the optimal temperature control scheme after integrating the requirements of all the parties and simultaneously improves and optimizes the temperature control scheme along with the change of influencing factors is fulfilled.
When the central control device determines that at least one temperature control scheme preset by the electrolyte temperature control device is insufficient to meet the working condition required by power generation/charging, the central control device instructs an independent temperature regulating mechanism connected with or integrated with the electrolyte temperature control device to start the emergency temperature control scheme, so that the effect of rapidly heating the battery through the independent temperature regulating mechanism to complete rapid starting of the carrier under special conditions, such as the condition that rapid heating is required to meet the short-time starting requirement, is achieved.
When one of the temperature control schemes is selected and applied by the central control device in combination with consideration of battery performance, positive electrode sediment condition and/or warm air/cold air requirement of a user, the temperature of one of the positive/negative electrolytes is measured and the temperature of the corresponding other electrolyte is calculated according to a temperature empirical formula, wherein the temperature empirical formula can be determined empirically through a limited number of experiments and combined with physical parameters comprising at least viscosity, specific heat, density and heat conductivity, so that the occurrence of data interference caused by simultaneous temperature measurement of the two electrolytes is avoided, and the requirement of comprehensive analysis and operation processing data capacity of the central control device is reduced, so that the purchase production cost of the central control device is reduced.
The all-vanadium redox flow battery operation device comprises an anode sediment recovery device, and according to the requirement of a user, the recovery process of anode sediment deposited at the bottom of an anode sediment separation storage tank which is arranged between the anode sediment separation storage tank and is adjacent to the anode electrolyte storage tank in a parallel manner and is separated by a partition with a notch above the anode sediment separation storage tank is completed under the instruction of the user request, and the relevant information at least comprising the weight of the sediment is obtained, so that the purpose of determining the side reaction degree of the electrolyte and further deducing the aging rate of the electrolyte of the battery is achieved, and a battery electrode liquid evaluation report is sent to the user in the form of pushing/indicating lamp/prompt on a mobile phone application/instrument panel/display screen so that the user can know the condition of the electrolyte of the battery used by a carrier in time.
The electrolyte temperature control device can adjust the corresponding temperature control scheme according to the condition that the sediment amount collected by the positive sediment recovery device in a certain time exceeds/does not reach a preset maximum/minimum threshold value.
Further, the central control device performs fault detection on equipment at least comprising the positive electrode sediment recovery device; under the condition of equipment fault elimination, the central control device carries out rationality judgment on a threshold value which is set in advance according to the battery performance and/or the running state of the carrier and/or the interval time and/or the user requirement and other influence factors; under the condition that the threshold value is reasonably set, the central control device can judge that the exceeding/failing to reach the preset maximum/minimum threshold value is caused by the excessively high/excessively low temperature of the battery electrolyte, so that the electrolyte temperature control device is driven to adjust a more matched temperature control scheme, and the condition that the performance of the battery is reduced due to abnormal precipitation of positive electrode sediment is avoided.
The invention also discloses a management method of the all-vanadium redox flow battery, which is realized by adopting the management system of the all-vanadium redox flow battery, and a central control device of the management system can execute the following steps:
s1, the central control device drives the electrolyte temperature control device to perform unilateral alternate heat exchange on positive/negative electrolyte according to user requirements and/or other internal or external instructions, and drives the electrolyte temperature control device to change a corresponding temperature control scheme when the user requirements and/or other internal or external instructions change, so that the purposes of electrolyte temperature control and waste heat recovery are achieved;
S2, when the sediment quantity collected by the positive sediment recovery device exceeds/does not reach a preset maximum/minimum threshold value within a certain time, the central control device instructs the electrolyte temperature control device to adjust a corresponding temperature control scheme after combining user requirements and/or other internal or external instructions, wherein the central control device 6 is used for preferentially performing equipment fault investigation and threshold value setting rationality judgment so as to achieve the adjustment of the adaptive temperature control scheme for eliminating other interference factors;
s3, when at least one preset temperature control scheme of the electrolyte temperature control device is insufficient to meet the working conditions required by power generation/charging, the confirmed central control device indicates an independent temperature regulating mechanism connected with or integrated with the electrolyte temperature control device 4 to start an emergency temperature control scheme so as to achieve the effect of quickly regulating and controlling the electrolyte temperature under special conditions;
s4, in the electrolyte circulation process, judging the precipitation amount of the precipitate by a recovery control unit according to signals of an anode precipitate sensor in an anode electrolyte separation storage tank, and starting an anode precipitate recovery system by a central control device according to the precipitation amount determined by the recovery control unit to obtain relevant information such as the weight of the precipitate so as to achieve the purpose of determining the side reaction degree of the electrolyte and deducing the aging rate of the electrolyte of the battery;
S5, in the recovery process, the recovery control unit 56 arranges the baffle plate 55 to drop and tightly close, so as to isolate the sediment and the electrolyte in the positive electrode electrolyte separation storage tank 51, and avoid the sediment from floating up to the surface of the electrolyte due to the starting of the recovery process while the electrolyte falls along with the sediment in the recovery process.
Drawings
Fig. 1 is a schematic structural diagram of an all-vanadium redox flow battery management system.
List of reference numerals
1: battery pack 10: battery cell
2: electrolyte reservoirs 21, 22: negative/positive electrolyte storage tank
23: separator 24: partition wall
3: electrolyte circulation unit 31: negative electrode electrolyte circulation inlet pipeline
32: negative electrolyte circulation outlet pipe 33: negative electrode electrolyte circulation pump
34: positive electrolyte circulation inlet duct 35: positive electrolyte circulation outlet pipeline
36: positive electrode electrolyte circulation pump 4: electrolyte temperature control device
41: heat exchange liquid storage tank 42: heat exchange liquid conduit
43: heat exchange liquid circulation pump 44: temperature sensor
45: fan 46: temperature control unit
5: positive electrode precipitate recovery system 51: positive electrode electrolyte separating storage tank
52: positive electrode precipitate sensor 53: positive electrode precipitate collecting unit
54: positive electrode precipitate evaluation unit 55: baffle plate
56: recovery control unit 6: central control device
Detailed Description
The invention discloses an all-vanadium redox flow battery management system for a carrier using an all-vanadium redox flow battery as a power device, in particular to a battery management system for a carrier using an all-vanadium redox flow battery as a power device, which is shown in a structural schematic diagram as shown in fig. 1 and comprises an all-vanadium redox flow battery operation device for providing electric energy and kinetic energy for the carrier through normal operation of the battery, an electrolyte temperature control device 4 for adjusting the temperature of electrolyte, a positive electrode precipitate recovery device 5 for collecting precipitate suspended in positive electrode electrolyte and a central control device 6 for receiving and/or sending command signals with all devices in the all-vanadium redox flow battery, wherein the all-vanadium redox flow battery operation device comprises a battery pack 1 formed by a plurality of battery units 10, an electrolyte storage tank 2 for storing positive/negative electrode electrolyte, and an electrolyte circulation unit 3 for transferring the electrolyte between the battery pack 1 and the electrolyte storage tank 2.
In order to increase the application range of the vanadium redox flow battery as the carrier of the power equipment, or in order to avoid the situation that the performance of the vanadium redox flow battery is reduced due to excessive heat generated by oxidation-reduction reaction occurring in the battery pack 1 of the vanadium redox flow battery or extreme weather of the carrier at high temperature/severe cold, the electrolyte temperature control device 4 of the invention can monitor at least one electrolyte temperature in real time and recover the battery capacity in time through single-side alternate heat exchange determined by the central control device 6 under the condition of jointly considering the battery performance, the condition of positive electrode sediment and/or the warm air/cold air requirement of a user, preferably selects to measure the temperature of the positive electrode electrolyte which is more prone to side reaction in real time and calculate the temperature of the corresponding negative electrode electrolyte according to a temperature empirical formula so as to reduce equipment investment and equipment information interference. The electrolyte temperature control device 4 comprises a heat exchange liquid storage tank 41 for storing and recovering heat exchange liquid, a heat exchange liquid conduit 42 for external circulation of the heat exchange liquid, a heat exchange liquid circulation pump 43 provided on the heat exchange liquid conduit 42 for providing circulation power to the heat exchange liquid, at least one temperature sensor 44 for monitoring the temperature of the positive and/or negative electrolyte, a fan 45 turnable around the electrolyte conduit for providing flowing gas to carry away the heat of the electrolyte, and a temperature control unit 46 for receiving and sending command signals, wherein the temperature control unit 46 starts or stops the temperature control process in response to a start or stop command of the central control device 6.
The heat exchange liquid flowing out from the outlet of the heat exchange liquid storage tank 41 located upstream flows through the inlet section of the heat exchange liquid conduit 42 connected to the outlet of the heat exchange liquid storage tank 41, the heat exchange section for exchanging heat with the positive/negative electrolyte stored in the positive/negative electrolyte storage tank 22/21 in the electrolyte storage tank 2 and the outlet section uncovered by the electrolyte storage tank 2, and finally flows to the inlet of the heat exchange liquid storage tank 41 located downstream to complete the complete closure of the heat exchange liquid flow circulation chain, wherein the heat exchange conduit heat exchange section 48 which is designed to be shaped (preferably spiral, zigzag or serpentine) to increase the contact area of the heat exchange process to improve the heat exchange efficiency is fixed on the inner wall of the electrolyte storage tank 2 storing the positive/negative electrolyte by a plurality of brackets and the separator 23, which are generally made of a material with a high heat transfer coefficient.
The temperature control unit 46 controlled by the central control device 6 selects and applies one of the temperature control schemes to perform single-side alternate heat exchange on the positive/negative electrolyte according to the battery performance, the positive electrode sediment condition and/or the warm air/cold air requirement of a user so as to control the temperature of the electrolyte to be within the range of standard working conditions, and preferably, the waste heat in the electrolyte is recovered while the full heat exchange effect is ensured by utilizing the single-side alternate heat exchange so as to achieve the purpose of energy multiple use.
In an embodiment, in the case of low external temperature, the temperature control unit 46 may transfer the heat temporarily stored in the heat exchange liquid storage tank 41 to the electrolyte in the electrolyte tank 2 with good heat preservation capability, which is provided with a firm and heat-insulating casing, by using the heat exchange liquid, so that the battery pack 1 has a proper reaction temperature at the next start.
In another embodiment, when the external temperature is high, the temperature control unit 46 simultaneously starts the heat exchange mode of parallel water cooling and air cooling to cool the electrolyte during the operation of the carrier, and actively reduces the temperature of the heat exchange liquid stored in the heat exchange liquid storage tank 41 during the stopping process, so as to store a cold source in advance for the next stage of high load operation.
In another embodiment, in the case of temporary stop, the temperature control unit 46 decides to decrease or increase the temperature of the heat exchange liquid stored in the heat exchange liquid storage tank 41 according to a user instruction in combination with "the temperature of the heat exchange liquid stored in the heat exchange liquid storage tank 41", "the temperature in the battery pack 1", and/or "the temperature of the electrolyte in the electrolyte tank 2".
In another embodiment, in the case where a rapid temperature rise is required to meet the short-time start-up requirement, the temperature control unit 46 directly heats the electrolyte in the electrolyte tank 2 by using an external independent temperature regulating mechanism to restore the battery capacity thereof to achieve the purpose of rapidly starting up the vehicle until the heat generated by the redox reaction of the electrolyte in the battery pack 1 is sufficient to maintain the heat required by itself.
In another embodiment, under normal temperature or lower temperature and continuous stable working conditions, the temperature control unit 46 will turn the air outlet face of the fan 45 to the channel which is opened together and is communicated with the manned area inside the carrier in response to the warm air demand of the user, so as to achieve the purposes of recovering the waste heat of the electrolyte, supplying the heat of the manned area inside the carrier and reducing the warm air and air conditioner consumption of the carrier while cooling the electrolyte by the fan 45.
In another embodiment, when the user turns on the carrier with the cold air conditioner due to the cold air demand, the temperature control unit 46 turns the air inlet surface of the fan 45 to the channel which is opened together and is communicated with the manned area inside the carrier, and simultaneously turns on the channel which is faced by the air outlet surface of the fan 45 and is communicated with the natural environment outside the carrier, so as to achieve the purpose of reducing the temperature of the electrolyte by using the excessive cold air inside the carrier sucked by the fan 45 and increasing the energy utilization rate of the cold air conditioner of the carrier.
In another embodiment, when the user uses the map to navigate the motion trail of the vehicle, the temperature control unit 46, which can obtain the air temperature condition on the route along the route through networking, can plan the appropriate heat exchange mode for the electrolyte in advance according to the air temperature change caused by factors such as latitude change/altitude change along the route planned by the map. For vehicles without a specific travel route, the travel route may be changed according to the user's needs and/or the overall schedule, the temperature control unit 46 may also assist the map in route planning to avoid as much as possible the extreme environment on the planned route affecting the performance of the vanadium redox flow battery used by the vehicle.
In another embodiment, when the residual capacity of the vanadium redox flow battery used by the carrier is too low, the temperature control unit 46 ensures that the electrolyte temperature does not exceed the highest temperature range of the standard working condition, so that the battery recovers more battery capacity with higher activity under the safe working condition, and simultaneously, the regulation and control of the temperature of the heat exchange liquid stored in the heat exchange liquid storage tank 41 are reduced as much as possible so as to reduce the consumption of the electric quantity by the electrolyte temperature control device 4, so as to maintain the carrier to be capable of running to the charging place.
The purpose of the positive electrode precipitate recovery device 5 is to separate and recover the precipitate (such as highly toxic vanadium pentoxide) suspended in the positive electrode electrolyte, which may cause clogging of the positive electrode electrolyte circulation pipes 34, 35 and affect the battery performance, due to oxidation/reduction reaction of the positive electrode electrolyte inside the battery pack 1 in a charged/discharged operation state, comprising a positive electrode electrolyte separation tank compartment 51 for storing the positive electrode electrolyte flowing out through the positive electrode electrolyte circulation outlet pipe 35, a positive electrode precipitate sensor 52 for monitoring the amount of positive electrode precipitate deposited at the bottom of the positive electrode electrolyte separation tank compartment 51, a positive electrode precipitate collection unit 53 for collecting the positive electrode precipitate deposited at the bottom of the positive electrode electrolyte separation tank compartment 51, an evaluation unit 54 for measuring the weight of the positive electrode precipitate and evaluating the electrolyte performance, a baffle 55 for blocking the electrolyte from falling down due to gravity, and a control unit 56 for receiving and transmitting a command signal with other units inside the positive electrode precipitate recovery device 5, wherein the recovery control unit 56 is started or stopped in response to the start of the recovery process 6.
The recovery control unit 56 promotes each operation unit in the positive electrode precipitate recovery device 5 to cooperate with each other in different operation scenes according to the deposition amount of the precipitate, the charging mode, the requirements of users and staff, the time interval for starting the recovery process, the operation condition of the carrier and/or the maintenance condition of the carrier, so as to complete the recovery process of the positive electrode precipitate when receiving the recovery instruction, thereby determining the side reaction degree of the electrolyte, further deducing the aging rate of the battery electrolyte, and sending various relevant information such as an evaluation report and the like to corresponding staff.
In an embodiment, when the deposition amount of the precipitate deposited at the bottom of the positive electrolyte separation tank compartment 51 exceeds a set threshold value, which is detected by the positive precipitate sensor 52 disposed on the inner wall of the positive electrolyte separation tank compartment 51 and may be set at a height from the bottom by a user or other staff, the recovery control unit 56 successively opens the baffle 55 for blocking the falling of the electrolyte, the positive precipitate collecting unit 53 for collecting the bottom precipitate, and the positive precipitate evaluation unit 54 for recovering and evaluating the performance parameters of the electrolyte disposed in the positive electrolyte separation tank compartment 51 and is higher than the positive precipitate sensor 52, and informs the user of the evaluation report of the electrolyte in the form of push/indicator/prompt on the cell phone application/dashboard/display screen in response to the received signal exceeding the threshold value, so that the user can know the condition of the electrolyte used in the cell in time and select an appropriate charging mode in advance.
In another embodiment, when the user continuously uses the charging pile to charge the flow battery of the carrier for a long period of time, the electrolyte performance is further reduced due to the situation that the positive electrode precipitate is irreversibly separated out when the electrolyte is not replaced for a long period of time, the recovery control unit 56 comprehensively analyzes all electrolyte historical evaluation reports from the previous use of the electrolyte replacement to the charging of the battery in the current time period, and informs the user that the electrolyte can be replaced in a reminding manner when the electrolyte performance of the battery is reduced to the first threshold value; informing a user that the electrolyte should be replaced in a notification mode when the performance of the battery electrolyte is reduced to a second threshold value; when the electrolyte of the battery decreases to the third threshold, the driver of the vehicle is informed in a warning manner that the electrolyte must be replaced as soon as possible for driving safety, otherwise the recovery control unit 56 will give a command to the vehicle to force measures on the premise of protecting the safety of the user.
In another embodiment, when the user uses the electrolyte replacement method to rapidly charge the vehicle battery, the recovery control unit 56 will suspend responding to all the instructions requesting to start the recovery process and send all the electrolyte history evaluation reports from the last electrolyte replacement method to the current time period to the staff performing electrolyte replacement through various data transmission methods such as USB/NFC/two-dimensional code/chip/card, so that the staff can timely know the replaced electrolyte and collect the performance parameters of the precipitate and be beneficial to making a correct judgment on the recovery method.
In another embodiment, when the user needs to immediately know the performance of the battery electrolyte used by the vehicle at this time, the recovery control unit 56 may start the recovery process to collect and evaluate the positive electrode precipitate in response to the externally input artificial instruction without receiving the exceeding threshold signal sent by the positive electrode precipitate sensor 52 by opening a button/knob/pull rod/shift lever or the like provided on the vehicle operation panel, and send the evaluation result and the history evaluation result to the user.
In another embodiment, if the amount of the precipitate recovered within the preset time period exceeds or does not reach the preset maximum/minimum threshold value, the central control device 6, which responds to the feedback information of the recovery control unit 56, first performs fault detection on the equipment of the positive precipitate recovery system 5, including at least the positive precipitate sensor 52, the positive precipitate collecting unit 53, the positive precipitate evaluation unit 54, the baffle 55 and the recovery control unit 56, and if the fault influence is removed, the central control device 6 determines the rationality of the threshold value setting, and if the threshold value setting is determined to be reasonable, the central control device 6 further causes the electrolyte temperature control device 4 to adjust the opening and closing angle of the air inlet of the fan 45 and/or the rotation speed of the fan 45 and/or the circulation speed of the heat exchange liquid circulation pump 43 and/or the temperature of the heat exchange liquid so as to ensure that the battery operates under the standard working condition, wherein the temperature control scheme of the electrolyte temperature control device 4 is determined by the heat exchange requirement and the user requirement.
In another embodiment, when the user uses the vehicle in a special sport situation such as high-speed sport/jolt/emergency brake, the recovery control unit 56 responds to the temporary closing command sent by the control system of the vehicle associated with the vehicle and controlling all the equipment components in the vehicle due to the special sport situation to suspend receiving all the requests for starting the recovery process, so as to avoid the situation that the recovery process performed in the special sport situation causes the electrolyte to splash and leak until the vehicle is no longer in the special sport situation.
In another embodiment, when the carrier fails or the user has an accident during the use of the carrier, the recovery control unit 56 receives an emergency termination instruction for starting the recovery process request in response to the control system associated with the carrier and controlling all the equipment components in the carrier, which is sent out by the control system due to the failure/accident, so as to avoid the leakage of the electrolyte caused by the recovery process performed in the failure and/or accident situation, until the user with maintenance knowledge or a professional maintenance staff or other staff confirms that the carrier can normally operate after the professional inspection and/or maintenance, and restarts the positive precipitate recovery device 5 under the authority of the administrator.
In another embodiment, when a user maintains the carrier in a professional maintenance place, a maintenance staff after professional training can receive a history evaluation report of the electrolyte of the vanadium redox flow battery in the carrier, a charging manner and the number of times of the electrolyte, a replacement/adjustment condition of each operation unit in the positive electrode precipitate recovery device 5, a received temporary closing instruction, an emergency termination instruction number of times, a received time and the like from the recovery control unit 56 in a time period from the end of the last maintenance of the carrier to the start of the maintenance of the carrier in a manner that various data transmission can be performed such as a USB/NFC/two-dimensional code/chip/card, so that the maintenance staff can timely and accurately understand the operation condition of the vanadium redox flow battery in the carrier during the two-time maintenance interval and can quickly and effectively propose an appropriate battery maintenance scheme, and at the same time, the recovery control unit 56 records the time of the current maintenance. If the user does not maintain the carrier for a long time when the time interval from the last maintenance is longer than the maximum maintenance interval period preset by the user or the maintenance staff, the recovery control unit 56 also reminds the user to maintain the carrier as soon as possible in the form of pushing/indicator/prompt on the mobile phone application/dashboard/display.
When the carrier of the power equipment using the all-vanadium redox flow battery is in an inactive state, the positive/negative electrolyte of the all-vanadium redox flow battery is respectively stored in the electrolyte storage tank 2 divided into two storage tanks by a partition plate 23 made of a material which is not liable to undergo oxidation-reduction reaction with the positive/negative electrolyte, wherein the negative electrolyte is stored in the negative electrolyte storage tank 21 positioned on the left side inside the electrolyte storage tank 2, and the positive electrolyte is stored in the positive electrolyte storage tank 22 positioned on the right side inside the electrolyte storage tank 2.
When the carrier adopting the all-vanadium redox flow battery as the power equipment is in a working state, the negative electrolyte stored in the negative electrolyte storage tank space 21 under the storage working condition in a mode that the electrolyte is ionized into ions to be free in the solution flows out vertically from an outlet positioned at the center of the bottom of the negative electrolyte storage tank space 21 under the pressure of the negative electrolyte circulating pump 33 for carrying out a negative electrolyte flow circulating chain.
The outlet at the center of the bottom of the catholyte tank compartment 21 located upstream is connected to the catholyte inlet of the cell electrode frame on the battery 1 located downstream through a smooth, non-bifurcated catholyte circulation inlet pipe 31, as viewed in the direction of the flow of the catholyte driven by the catholyte circulation pump 33, so that the catholyte flowing out of the bottom of the catholyte tank compartment 21 flows unidirectionally and at a constant and appropriate flow rate into the battery 1 undergoing the redox reaction.
The catholyte flowing out from the catholyte outlet of the battery electrode frame on the battery 1 after sufficient oxidation/reduction reaction inside the battery 1 also flows through the smooth and non-bifurcated catholyte circulation outlet pipe 32 in one direction and vertically from the inlet at the top center of the catholyte reservoir compartment 21 at a constant and proper flow rate, thus completing perfect closure of the catholyte flow circulation chain.
The negative electrolyte stored in the negative electrolyte storage tank 21 is discharged vertically from an outlet positioned at the center of the bottom of the positive electrolyte storage tank 22 under the pressure of the positive electrolyte circulation pump 36, along with a negative electrolyte circulation chain from the outlet of the storage tank to the inlet of the storage tank, and the working fluid positive electrolyte corresponding to the positive electrolyte circulation chain stored in the electrolyte storage tank 2 in the storage condition in such a manner that the electrolyte is ionized into ions to be free in solution.
The outlet at the center of the bottom of the upstream-located anolyte compartment 22 is connected to the anolyte inlet of the cell electrode frame on the downstream-located battery 1 through a smooth, non-bifurcated anolyte circulation inlet pipe 34, as viewed in the direction of the flow of the anolyte driven by the anolyte circulation pump 36, so that the anolyte flowing out of the bottom of the anolyte compartment 22 flows unidirectionally and at a constant and appropriate flow rate into the battery 1 in which the redox reaction is taking place.
The positive electrode electrolyte flowing out from the positive electrode electrolyte outlet of the battery electrode frame on the battery pack 1 after sufficient oxidation/reduction reaction inside the battery pack 1 also flows in one direction at a constant and proper flow rate through the smooth and non-bifurcated positive electrode electrolyte circulation outlet pipe 35 and then flows into the positive electrode precipitate recovery device 5 for separating solid precipitate from liquid electrolyte in the positive electrode electrolyte.
The positive electrode electrolyte separating storage tank space 51 for storing the positive electrode electrolyte flowing out through the positive electrode electrolyte circulation outlet pipe 35 is arranged side by side with the same height as the electrolyte storage tank 2 in a manner of clinging to the positive electrode electrolyte storage tank space 22 for storing the positive electrode electrolyte in the electrolyte storage tank 2 and is separated from the partition 24 which can form a gap with the top end of the electrolyte storage tank 2 by being slightly lower than the height of the electrolyte storage tank 2.
When the excessive positive electrode electrolyte flowing out from the battery pack 1 after undergoing the redox reaction and entering the positive electrode electrolyte separation storage tank space 51 through the positive electrode electrolyte circulation outlet pipe 35, the liquid component of the excessive positive electrode electrolyte in the positive electrode electrolyte separation storage tank space 51 with a fixed containing volume flows back into the positive electrode electrolyte storage tank space 22 in an overflow manner through the gap between the partition 24 between the positive electrode electrolyte storage tank space 22 and the positive electrode electrolyte separation storage tank space 51 and the top of the electrolyte storage tank 2, and the positive electrode electrolyte to be entered into the positive electrode electrolyte circulation chain stored in the positive electrode electrolyte storage tank space 22 is replenished and mixed with the positive electrode electrolyte, thereby completing the complete closure of the positive electrode electrolyte circulation chain.
The precipitate suspended in the positive electrode electrolyte and thus flowing from the battery 1 into the positive electrode electrolyte separation tank compartment 51, which precipitates during the positive electrode oxidation/reduction reaction, gradually precipitates under the action of density and gravity at the bottom of the positive electrode electrolyte separation tank compartment 51 and is collected and recovered by the recovery process started in each case, and cannot continue to flow into the positive electrode electrolyte tank compartment 22 to enter the next circulation of the positive electrode electrolyte flow. Therefore, the invention well avoids the situation that excessive precipitate precipitated in the positive electrolyte in the battery charging/discharging working process accumulates in the positive electrolyte circulating pipelines 34 and 35 for a long time and finally plugs the pipelines and adheres to other heat exchange pipelines arranged in the electrolyte storage tank 2 to influence the heat exchange effect, and effectively ensures that the flow battery can safely and effectively complete the established charging/discharging working.
The invention discloses a method for managing an all-vanadium redox flow battery, which is realized by using the electrolyte management system of any embodiment, wherein the electrolyte management system comprises an electrolyte temperature control device 4 capable of reducing side reaction in the battery to reduce precipitation and a positive electrode precipitate recovery device 5 capable of avoiding adhesion of precipitate on a heat exchange conduit to influence heat exchange efficiency, and the method comprises the following steps:
S1, a central control device (6) drives an electrolyte temperature control device (4) to perform single-side alternate heat exchange on positive/negative electrolyte according to user requirements and/or other internal or external instructions, and drives the electrolyte temperature control device (4) to change a corresponding temperature control scheme when the user requirements and/or other internal or external instructions change;
s2, when the sediment quantity collected by the positive sediment recovery device (5) exceeds/does not reach a preset maximum/minimum threshold value within a certain time, the central control device (6) instructs the electrolyte temperature control device (4) to adjust a corresponding temperature control scheme after combining user requirements and/or other internal or external instructions, wherein the central control device (6) conducts equipment fault investigation and threshold value setting rationality judgment preferentially;
s3, when at least one preset temperature control scheme of the electrolyte temperature control device (4) is insufficient to meet the working conditions required by power generation/charging, the confirmed central control device (6) indicates an independent temperature regulating mechanism connected with or integrated with the electrolyte temperature control device (4) to start an emergency temperature control scheme;
s4, in the electrolyte circulation process, the recovery control unit 56 judges the precipitation amount of the precipitate according to the signal of the positive electrode precipitate sensor 52 in the positive electrode electrolyte separation storage tank 51, and the central control device 6 starts the positive electrode precipitate recovery system 5 according to the precipitation amount determined by the recovery control unit 56;
S5, in the recovery process, the recovery control unit 56 arranges the baffle plate 55 to drop and tightly close, so as to isolate the sediment and the electrolyte in the positive electrode electrolyte separation storage tank 51, and avoid the sediment from floating up to the surface of the electrolyte due to the starting of the recovery process while the electrolyte falls along with the sediment in the recovery process.
It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the invention is defined by the claims and their equivalents.
Claims (10)
1. A circulation system for a flow battery, characterized in that the circulation system comprises an all-vanadium flow battery operating device for powering a vehicle, the operating device comprising a battery (1) and an electrolyte reservoir (2), wherein,
the circulating system separates and recovers sediment which is suspended in the positive electrolyte and is separated out by oxidation/reduction reaction in the battery pack (1) in the positive electrolyte through the all-vanadium redox flow battery running device, and the sediment which is blocked by the positive electrolyte circulating pipelines (34 and 35) and affects the battery performance is prevented from accumulating in the positive electrolyte circulating pipelines (34 and 35) and blocking the positive electrolyte circulating pipelines (34 and 35) and adhering to other heat exchange pipelines arranged in the electrolyte storage tank (2) in the battery charging/discharging working process, so that the heat exchange effect is affected;
The system further comprises a central control device (6) and an anode sediment recovery device (5), when the sediment amount collected by the anode sediment recovery device (5) exceeds/does not reach a preset maximum/minimum threshold value within a certain period of time, the central control device (6) instructs the electrolyte temperature control device (4) to adjust a corresponding temperature control scheme after combining user requirements and/or other internal or external instructions, wherein the central control device (6) conducts equipment fault investigation and threshold value setting rationality judgment preferentially.
2. The circulation system according to claim 1, characterized in that the circulation system comprises a positive electrolyte separation tank compartment (51), the positive electrolyte separation tank compartment (51) for storing the positive electrolyte flowing out through the positive electrolyte circulation outlet pipe (35) being arranged side by side with the electrolyte tank (2) in such a manner as to be in close contact with the positive electrolyte tank compartment (22) storing the positive electrolyte in the electrolyte tank (2) and being separated by a partition (24) which is lower than the height of the electrolyte tank (2) and can form a gap with the top end of the electrolyte tank (2).
3. The circulation system according to claim 1, wherein when the carrier employing the all-vanadium redox flow battery as a power device is in an inactive state, positive/negative electrolytes of the all-vanadium redox flow battery are respectively stored in the electrolyte reservoirs (2) partitioned by a partition plate (23) into two reservoirs, wherein the negative electrolytes are stored in a negative electrolyte reservoir compartment (21) located on the inner left side of the electrolyte reservoir (2), and the positive electrolytes are stored in the positive electrolyte reservoir compartment (22) located on the inner right side of the electrolyte reservoir (2).
4. A circulation system according to claim 3, wherein when the vehicle employing the all-vanadium redox flow battery as a power plant is in operation, the negative electrolyte stored in the negative electrolyte storage tank (21) in a state that the electrolyte is ionized to ions to be free in solution is vertically discharged from an outlet located at the center of the bottom of the negative electrolyte storage tank (21) under the pressure of a negative electrolyte circulation pump (33) for performing a negative electrolyte flow circulation chain.
5. The circulation system according to claim 4, wherein the working fluid positive electrode electrolyte corresponding to the positive electrode electrolyte circulation chain stored in the electrolyte storage tank (2) in a storage condition in a state that electrolyte is ionized into ions to be free in solution is vertically discharged from an outlet located at the bottom center of the positive electrode electrolyte storage tank (22) under the pressure of a positive electrode electrolyte circulation pump (36) while the negative electrode electrolyte stored in the negative electrode electrolyte storage tank (21) is circulated from the outlet of the negative electrode electrolyte storage tank to the inlet of the negative electrode electrolyte storage tank.
6. A circulation method for a flow battery, characterized in that the circulation method separates and recovers sediment which is separated out from a battery pack (1) suspended in positive electrolyte and is separated out to cause the blocking of a positive electrolyte circulation pipeline and influence the performance of the battery, and the sediment which is separated out from the positive electrolyte in the charging/discharging working process of the battery is prevented from accumulating in the positive electrolyte circulation pipelines (34 and 35) and blocking the positive electrolyte circulation pipelines (34 and 35) and adhering to other heat exchange pipelines arranged in an electrolyte storage tank (2) to influence the heat exchange effect;
When the sediment amount collected by the positive sediment recovery device (5) exceeds/does not reach a preset maximum/minimum threshold value within a certain time, the central control device (6) instructs the electrolyte temperature control device (4) to adjust a corresponding temperature control scheme after combining user requirements and/or other internal or external instructions, wherein the central control device (6) is used for preferentially conducting equipment fault investigation and threshold value setting rationality judgment.
7. The circulation method according to claim 6, characterized in that an outlet at the bottom center of an upstream-located catholyte tank compartment (21) is communicated to a catholyte inlet of a cell electrode frame on the downstream-located assembled battery (1) through a catholyte circulation inlet pipe (31), so that the catholyte flowing out of the bottom of the catholyte tank compartment (21) flows unidirectionally and at a constant and proper flow rate into the assembled battery (1) where the redox reaction is taking place.
8. The circulation method according to claim 7, wherein the catholyte flowing out from the catholyte outlet of the battery electrode frame on the battery (1) after sufficient oxidation/reduction reaction inside the battery (1) also flows through the catholyte circulation outlet pipe (32) in one direction at a constant and appropriate flow rate and flows vertically from the inlet at the top center of the catholyte storage tank compartment (21), thereby completing the closing of the catholyte flow circulation chain.
9. The circulation method according to claim 6, wherein an outlet at the bottom center of the upstream-located positive electrolyte reservoir compartment (22) is communicated to a positive electrolyte inlet of a cell electrode frame on the downstream-located battery (1) through a positive electrolyte circulation inlet pipe (34), so that the positive electrolyte flowing out of the bottom of the positive electrolyte reservoir compartment (22) flows unidirectionally and at a constant and proper flow rate into the battery (1) in which the redox reaction is occurring.
10. The circulation method according to claim 9, characterized in that the positive electrode electrolyte flowing out from a positive electrode electrolyte outlet of a battery electrode frame on the battery pack (1) at a constant and proper flow rate after undergoing a sufficient oxidation/reduction reaction inside the battery pack (1) flows in one direction through the positive electrode electrolyte circulation outlet pipe (35) into a positive electrode precipitate recovery device (5) for separating solid precipitate from liquid electrolyte in the positive electrode electrolyte.
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| CN116190718B (en) * | 2023-05-05 | 2023-07-07 | 沈阳恒久安泰环保与节能科技有限公司 | Electrolyte flow management device for all-vanadium redox flow battery |
| CN117317307B (en) * | 2023-11-30 | 2024-03-22 | 湖南省银峰新能源有限公司 | Liquid flow regulating method and device for energy storage system of all-vanadium redox flow battery |
| CN117832548A (en) * | 2024-01-09 | 2024-04-05 | 湖南省银峰新能源有限公司 | Low-temperature protection method and system for all-vanadium redox flow battery |
| CN117634051B (en) * | 2024-01-18 | 2024-04-09 | 中汽研汽车检验中心（天津）有限公司 | Heat pump air conditioning system simulation prediction method and system based on real road environment |
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| CN112952143B (en) | 2022-05-20 |
| CN114883596A (en) | 2022-08-09 |
| CN112952143A (en) | 2021-06-11 |
| CN114744237A (en) | 2022-07-12 |
| CN114883596B (en) | 2024-04-26 |
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