CN117613310A - Control circuit and control system of flow battery - Google Patents
Control circuit and control system of flow battery Download PDFInfo
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- CN117613310A CN117613310A CN202311450170.5A CN202311450170A CN117613310A CN 117613310 A CN117613310 A CN 117613310A CN 202311450170 A CN202311450170 A CN 202311450170A CN 117613310 A CN117613310 A CN 117613310A
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
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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
- H01M8/18—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
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/249—Grouping of fuel cells, e.g. stacking of fuel cells comprising two or more groupings of fuel cells, e.g. modular assemblies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The application relates to a control circuit and a control system of a flow battery. The control circuit includes: the auxiliary control modules are connected with the pile modules in a one-to-one correspondence manner, and are used for acquiring first state information of the pile modules and controlling the running states of the pile modules; the system comprises a plurality of battery cluster control modules, a plurality of auxiliary control modules, a plurality of liquid storage modules and a plurality of liquid storage modules, wherein each battery cluster control module is respectively connected with the auxiliary control module and the liquid storage module corresponding to each electric pile module of a liquid flow loop and is used for respectively and correspondingly controlling the operation state of each auxiliary control module according to first state information, acquiring second state information of the liquid storage module and controlling the operation state of the liquid storage module; and the battery array control modules are respectively connected with the battery cluster control modules and are used for controlling the running states of the battery cluster control modules according to the first state information and the second state information. According to the method and the device, the flow battery is subjected to hierarchical management, so that the stability and the management efficiency of the flow battery can be improved.
Description
Technical Field
The application relates to the technical field of flow batteries, in particular to a control circuit and a control system of a flow battery.
Background
With the development of energy storage technology, flow battery technology has emerged. Flow batteries may be used to generate and store electrical energy. The flow battery consists of a plurality of electric piles, wherein each electric pile comprises a positive plate, a negative plate, a diaphragm, a flow circulation system, a shell and the like. The energy storage mode of the flow battery is to convert chemical energy into electric energy, and the working principle is based on oxidation-reduction reaction on positive and negative plates of a galvanic pile, wherein the positive plate undergoes oxidation reaction, the negative plate undergoes reduction reaction, positive and negative ions are separated through a diaphragm, and the supply of reactants and the discharge of products are realized through a flow circulation system.
Generally, it is necessary to control the flow battery to operate stably, so as to ensure that the flow battery can store energy effectively, thereby meeting the power supply requirement of the load. Flow battery stacks are typically composed of tens to hundreds of single cells in series, and as the power requirements increase, the flow batteries become larger and larger, which presents a great challenge in how to control the flow batteries to operate stably.
Disclosure of Invention
Based on this, it is necessary to provide a control circuit and a control system for a flow battery, so as to improve stability and management efficiency of the flow battery.
In a first aspect, an embodiment of the present application provides a control circuit of a flow battery, where the flow battery includes a plurality of liquid storage modules and a plurality of pile modules arranged in an array, where a portion of pile modules located in a same row are connected to form a current loop, and a portion of pile modules located in a same column are correspondingly connected to one of the liquid storage modules to form a flow loop, where the control circuit includes:
The auxiliary control modules are connected with the pile modules in a one-to-one correspondence manner, and are used for acquiring first state information of the pile modules and controlling the running states of the pile modules;
the battery cluster control modules are respectively connected with the auxiliary control modules and the liquid storage modules corresponding to the pile modules of the liquid flow loop, and are used for respectively and correspondingly controlling the operation states of the auxiliary control modules according to the first state information of the pile modules of the liquid flow loop, acquiring the second state information of the liquid storage modules and controlling the operation states of the liquid storage modules;
the battery array control module is respectively connected with the battery cluster control modules and is used for controlling the running state of each battery cluster control module according to the first state information of each electric pile module and the second state information of each liquid storage module.
In one embodiment, the battery array control module is configured to generate a first control instruction according to the first state information of each pile module and the second state information of each reservoir module, and send the first control instruction to the battery cluster control module to control the operation state of the battery cluster control module;
The battery cluster control module is used for generating a second control instruction according to the first control instruction and the first state information of each pile module of the liquid flow loop, sending the second control instruction to each corresponding auxiliary control module so as to control the operation state of each auxiliary control module, and controlling the operation state of the liquid storage module according to the first control instruction and the second state information of the liquid storage module;
the auxiliary control module is used for controlling the running state of the electric pile module according to the second control instruction and the first state information of the electric pile module.
In one embodiment, the battery cluster control module is connected with the battery array control module and the auxiliary control module corresponding to each pile module in the same row by adopting a CAN bus, so as to transmit the first control instruction and the second control instruction through the CAN bus.
In one embodiment, the galvanic pile module comprises a plurality of single cells, a pipeline and an adjusting unit, wherein the pipeline is respectively connected with the plurality of single cells and the liquid storage module and is used for providing flow channels of electrolyte in the liquid storage module for the plurality of single cells; the adjusting unit is connected with the pipeline and is used for adjusting the fluid parameters in the flow channel; wherein, the auxiliary control module includes:
The pipeline acquisition unit is respectively connected with the single cells and the pipeline of the electric pile module and is used for acquiring sub-state information of the electric pile module; wherein the sub-state information includes at least one of pre-pump pressure, pre-stack pressure, stack temperature, inlet flow;
and the pipeline control unit is respectively connected with the pipeline acquisition unit and the adjusting unit and is used for controlling the running state of the adjusting unit according to the sub-state information so as to adjust the fluid parameters in the flow channel.
In one embodiment, the auxiliary control module further includes:
the single cell collecting units are respectively connected with the single cells of the electric pile module in a one-to-one correspondence manner and are used for collecting the cell voltages of the single cells;
the pile acquisition unit is connected with a plurality of single cells of the pile module and is used for acquiring pile voltage of the pile module;
the single-cell stack control unit is respectively connected with the single-cell collection unit, the electric stack collection unit and the pipeline control unit and is used for generating a detection signal and a third control instruction according to the cell voltage of each single cell, the sub-state information of the electric stack module and the electric stack voltage and sending the third control instruction to the pipeline control unit; the detection signal is used for indicating whether the pile module fails or not.
In one embodiment, the battery cluster control module includes:
the liquid storage acquisition unit is connected with the liquid storage module and used for acquiring the second state information of the liquid storage module, wherein the second state information comprises at least one of gas concentration, tank pressure, liquid storage temperature and liquid level;
the battery cluster control unit is respectively connected with the liquid storage acquisition unit and the auxiliary control modules corresponding to the pile modules of the liquid flow loop, and is used for generating first detection information according to the first state information of the pile modules of the liquid flow loop and controlling the operation state of the corresponding auxiliary control modules according to the first detection information; wherein the first detection information includes at least one of a remaining capacity, a degradation parameter, and an available charge-discharge power of the pile module;
the battery cluster control unit is further used for generating second detection information according to the second state information of the liquid storage module and controlling the running state of the liquid storage module according to the second detection information; the second detection information comprises at least one of residual capacity and concentration parameters of electrolyte of the liquid storage module.
In one embodiment, the control circuit of the flow battery further includes a plurality of switch modules correspondingly connected with the pile modules in parallel, the battery cluster control unit is further connected with the switch modules corresponding to the pile modules of the flow circuit, and the battery cluster control unit is further used for controlling the on-off states of the corresponding switch modules according to the first state information of the pile modules.
In one embodiment, the control circuit of the flow battery further comprises:
the voltage conversion modules and the pile modules in the same row form the current loop, and the voltage conversion modules are used for converting the voltage output by the pile modules in the same row so as to supply power for a load; wherein,
the battery array control module is connected with each voltage conversion module, and is used for adjusting the voltage conversion parameters of the corresponding voltage conversion modules according to the first state information of each pile module in the same row.
In a second aspect, embodiments of the present application provide a control system of a flow battery, including:
the flow battery comprises a plurality of pile modules and a plurality of liquid storage modules which are arranged in an array, wherein part of pile modules positioned in the same row are connected to form a current loop, and part of pile modules positioned in the same column are correspondingly connected with one liquid storage module to form a liquid flow loop;
The control circuit of the flow battery provided in the first aspect is connected to each pile module and each reservoir module, and the control circuit of the flow battery is used for controlling the operation states of each pile module and each reservoir module.
In one embodiment, the control system of the flow battery further comprises:
the energy management module is connected with the battery array control module in the control circuit of the flow battery, and is used for generating a scheduling instruction according to the power supply parameters of the load and sending the scheduling instruction to the battery array control module so as to control the running state of the battery array control module.
According to the control circuit and the control system of the flow battery, the auxiliary control module is used for acquiring the first state information of the electric pile module and controlling the running state of the electric pile module; the battery cluster control module is used for controlling the operation state of the corresponding auxiliary module according to the first state information of each pile module in the same liquid flow loop, and the battery cluster control module is used for acquiring the second state information of the liquid storage module in the same liquid flow loop and controlling the operation state of the liquid storage module; and the operating state of each battery cluster control module is controlled by the electric pile array control module according to the first state information of each electric pile module and the second state information of each liquid storage module. According to the control circuit of the flow battery, the auxiliary control module, the battery cluster control module and the battery array control module are designed in a grading manner, so that grading management of each pile module and each liquid storage module in the flow battery is achieved, namely, primary control of one pile module is achieved through the auxiliary control module, independent management of a single pile module is achieved, secondary control of the battery cluster control module and one liquid storage module is achieved through the battery array control module, clustered management of each pile module and each liquid storage module in the same liquid flow loop is achieved, three-level control of the battery cluster control module is achieved through the battery cluster control module, integrated management of each pile module and each energy storage module in the flow power station is achieved, management of the flow battery from multiple levels and multiple granularities is achieved, management efficiency of the flow battery is improved while the stability of the flow battery is improved, and hardware development complexity and maintenance difficulty of the flow battery are simplified.
Drawings
In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of a control system of a liquid circuit battery according to an embodiment;
FIG. 2 is a second schematic diagram of a control system of a liquid circuit battery according to an embodiment;
FIG. 3 is a third schematic diagram of a control system of a liquid circuit battery according to an embodiment;
FIG. 4 is a schematic diagram of a control system of a liquid circuit battery according to an embodiment;
fig. 5 is a schematic diagram of a control system of a liquid circuit battery according to an embodiment.
Reference numerals illustrate:
the system comprises a 1-flow battery, a 2-flow circuit control circuit, a 3-auxiliary control subsystem, a 4-battery cluster control subsystem, a 5-battery array control subsystem, a 6-energy storage conversion subsystem, a 7-display screen, an 8-data acquisition subsystem and monitoring control system, a 9-energy management subsystem, a 10-liquid storage module, a 20-electric pile module, a 21-single battery, a 22-regulating unit, a 221-speed regulator, a 222-electromagnetic valve, a 223-regulating valve, a 214-magnetic pump, a 30-auxiliary control module, a 31-pipeline acquisition unit, a 32-pipeline control unit, a 33-single battery acquisition unit, a 34-electric pile acquisition unit, a 35-single electric pile control unit, a 40-battery cluster control module, a 411-positive electrode tank body control board, a 412-negative electrode tank body control board, a 42-battery cluster control unit, a 50-battery array control module, a 60-voltage conversion module, a 71-alternating current power supply, a 72-first direct current power supply, a 73-second direct current power supply, a 74-switch and an 80-switch module.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. Both the first resistor and the second resistor are resistors, but they are not the same resistor.
It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transmission between each other.
It is understood that "at least one" means one or more and "a plurality" means two or more. "at least part of an element" means part or all of the element.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.
The control circuit of the flow battery is applied to the flow battery. The flow battery comprises a plurality of liquid storage modules and a plurality of electric pile modules which are arranged in an array. Wherein, the partial pile modules positioned in the same row are connected to form a current loop. And the partial pile modules positioned in the same column are correspondingly connected with a liquid storage module to form a liquid flow loop. Therefore, each pile module in the same circuit loop is respectively positioned in different liquid flow loops, and each pile module in the same liquid flow loop is respectively positioned in different circuit loops. Wherein the stack module may comprise a plurality of connected cells, which may be used to provide electrical energy to a load. The liquid storage module is used for storing electrolyte so as to provide charge and discharge support for the galvanic pile module. The liquid storage module comprises an anode liquid storage tank and a cathode liquid storage tank, wherein the anode liquid storage tank is used for storing anode electrolyte, and the cathode liquid storage tank is used for storing a cathode liquid storage tank.
Fig. 1 provides a schematic structural diagram of a flow battery. As shown in fig. 1, the flow battery 1 includes n rows and m columns (n×m) of pile modules 10 and m reservoir modules 20, where the m pile modules 10 in the ith row are connected to form an ith current loop, and the n pile modules 10 in the jth column are connected to the jth reservoir module 20 to form a jth flow loop. Wherein n is more than 1, m is more than 1, i is more than or equal to 1 and less than or equal to n, and j is more than or equal to 1 and less than or equal to m.
In one embodiment, as shown in fig. 2, a schematic diagram of a control system of a flow battery is provided, the control system of the flow battery comprising the flow battery 1 shown in fig. 1 and a control circuit 2 of the flow battery. The flow battery control circuit 2 includes a plurality of auxiliary control modules 30 (Fuel cell Control Unit, FCU), a plurality of battery cluster control modules 40 (battery cluster management unit, BCMU), and a battery array control module 50 (Battery Array Management Unit, BAMU).
The plurality of auxiliary control modules 30 are connected to the plurality of pile modules 20 in a one-to-one correspondence. The auxiliary control module 30 is configured to obtain first state information of the pile module 20, and control an operation state of the pile module 20. Wherein the first status information is used to indicate the operation status of the pile module 20. Taking the control circuit of the flow battery shown in fig. 2 as an example, the auxiliary control module 30 of the ith row and the jth column is connected to the pile module 20 of the ith row and the jth column, and the auxiliary control module 30 of the ith row and the jth column is used for acquiring the first state information of the pile module 20 of the ith row and the jth column and controlling the operation state of the pile module 20 of the ith row and the jth column. The number of the auxiliary control modules 30 is n×m.
Each battery cluster control module 40 is respectively connected with the auxiliary control module 30 and the liquid storage module 10 corresponding to each electric pile module 20 of a liquid flow loop. The battery cluster control module 40 is configured to correspondingly control the operation states of the auxiliary control modules 30 according to the first state information of each pile module 20 of the liquid flow circuit, so as to control the operation states of the pile modules 20 corresponding to the auxiliary control modules 30. The battery cluster control module 40 is further configured to obtain second status information of the liquid storage module 10, and control an operation status of the liquid storage module 10. Taking the control circuit of the flow battery shown in fig. 2 as an example, the jth battery cluster control module 40 is connected to the auxiliary control modules 30 (i.e., the jth n auxiliary control modules 30) and the jth liquid storage module 10 corresponding to the nth electric pile module 20 in the jth liquid flow circuit, respectively. The jth cluster control module 40 is configured to control the operation states of the n auxiliary control modules 30 in the jth column according to the first state information of the n pile modules 20 in the jth liquid flow loop (i.e., the jth column). The jth battery cluster control module 40 is further configured to obtain the second status information of the jth reservoir module 10, and control the operation status of the jth reservoir module 10. Wherein the number of the battery cluster control modules 40 is m.
The battery array control module 50 is connected to each of the auxiliary control modules 30 and each of the battery cluster control modules 40. The cell array control module 50 is configured to control the operation state of each cell cluster control module 40 according to the first state information of each cell stack module 20 and the second state information of each reservoir module 10, thereby controlling the operation state of each cell stack module 20 and each reservoir module 10.
The control circuit of the flow battery acquires the first state information of the electric pile module 20 through the auxiliary control module 30 and controls the running state of the electric pile module 20; and, the battery cluster control module 40 controls the operation state of the corresponding auxiliary module according to the first state information of each pile module 20 in the same liquid flow loop, and the battery cluster control module 40 obtains the second state information of the liquid storage module 10 in the same liquid flow loop and controls the operation state of the liquid storage module 10; and, the operating state of each of the battery cluster control modules 40 is controlled by the stack array control module according to the first state information of each of the stack modules 20 and the second state information of each of the reservoir modules 10. According to the control circuit of the flow battery, the auxiliary control module 30, the battery cluster control module 40 and the battery array control module 50 are designed in a grading manner, so that grading management of each electric pile module 20 and each liquid storage module 10 in the flow battery is realized, namely, primary control of one electric pile module 20 is realized through the auxiliary control module 30, independent management of a single electric pile module 20 is realized, secondary control of the battery cluster control module 40 and one liquid storage module 10 is realized through the battery array control module 50, clustered management of each electric pile module 20 and each liquid storage module 10 in the same liquid flow loop is realized, three-level control of the battery cluster control module 40 is realized through the battery cluster control module 40, and integral management of each electric pile module 20 and each energy storage module in a liquid flow power station is realized, so that management of the flow battery from multiple levels and multiple granularity is realized, the management efficiency of the flow battery is improved, and the complexity of hardware development and the maintenance difficulty of the flow battery are simplified.
In one embodiment, referring to fig. 2, the battery array control module 50 is configured to generate a first control command according to the first status information of each stack module 20 and the second status information of each reservoir module 10, and send the first control command to the battery cluster control module 40 to control the operation status of the battery cluster control module 40. Wherein the first control command is used to adjust the operation state of the battery cluster control module 40. The battery array control module 50 may also obtain the third operation information of each battery cluster control module 40, and generate the first control instruction according to the first state information of each stack module 20, the second state information of each reservoir module 10, and the third operation information of each battery cluster control module 40. Wherein the third operation information is used to represent the operation state of the battery cluster control module 40. The third operation information includes information related to an operation state, such as a normal state of the battery cluster control module 40 or a failure of the battery cluster control module 40, which is not limited herein.
The battery cluster control module 40 is configured to generate a second control instruction according to the first control instruction sent by the battery array control module 50 and the first status information of each pile module 20 of the liquid flow circuit, and send the second control instruction to each corresponding auxiliary control module 30 to control the operation status of each auxiliary control module 30, and control the operation status of the liquid storage module 10 according to the first control instruction and the second status information of the liquid storage module 10. The second control command is used for adjusting the operation state of the auxiliary control module 30.
For better understanding, taking the control circuit of the flow battery shown in fig. 2 as an example, the jth battery cluster control module 40 is configured to generate a second control instruction according to the first control instruction sent by the battery array control module 50 and the first state information of the n pile modules 20 of the jth liquid flow loop (i.e. the jth column), and send the second control instruction to the n auxiliary control modules 30 of the jth column, so as to control the operation states of the n auxiliary control modules 30 of the jth column. The jth battery cluster control module 40 is further configured to control an operation state of the jth reservoir module 10 according to the first control command sent by the battery array control module 50 and the second state information of the jth reservoir module 10.
For example, the jth cluster control module 40 may further obtain fourth operation information of the n auxiliary control modules 30 in the jth column, generate a second control instruction according to the first control instruction, the first state information and the fourth operation information of the n pile modules 20 in the jth liquid flow loop, and send the second control instruction to the n auxiliary control modules 30 in the jth column to control the operation states of the n auxiliary control modules 30 in the jth column. The fourth operation information is used to indicate the operation state of the auxiliary control module 30. The fourth operation information includes information related to an operation state, such as a normal operation of the auxiliary control module 30 or a failure of the auxiliary control module 30, which is not limited herein.
The auxiliary control module 30 is further configured to control an operation state of the pile module 20 according to the second control command and the first state information of the pile module 20. Taking the control circuit of the flow battery shown in fig. 2 as an example, the auxiliary control module 30 in the ith row and the jth column is further configured to control the operation state of the ith row and the jth column of the pile modules 20 according to the second control instruction sent by the jth battery cluster control module 40 and the first state information of the ith row and the jth column of the pile modules 20.
According to the control circuit of the flow battery, the first control instruction is generated by the battery array control module 50 according to the first state information and the second state information, so that the control of the battery cluster control module 40 is realized by the first control instruction, then the battery cluster control module 40 can generate the second control instruction according to the first control instruction, the first state information and the second state information, so that the control of the auxiliary control module 30 and the liquid storage module 10 is realized by the second control instruction, and then the control of the electric pile module 20 can be realized by the auxiliary control module 30 according to the second control instruction and the first state information.
In one embodiment, the battery cluster control module 40 is connected to the battery array control module 50 and each auxiliary control module 30 by a CAN (Controller Area Network ) bus, so as to transmit the first control command and the second control command through the CAN bus. Taking the control circuit of the flow battery shown in fig. 2 as an example, the jth battery cluster control module 40 is connected with the battery array control module 50 and the n auxiliary control modules 30 in the jth column through a CAN bus. Based on the above, communication among the auxiliary control module 30, the battery cluster control module 40 and the battery array control module 50 CAN be realized through the CAN bus, so that hierarchical management of the flow battery is realized, and the management efficiency of the flow battery is improved.
Fig. 3 provides a schematic structural diagram of a control system for a liquid circuit battery. Referring to fig. 3, in one embodiment, the stack module 20 includes a plurality of unit cells 21, a pipe, and a conditioning unit 22. The number of the single cells 21 may be set according to actual requirements, and is not limited herein. The pipes are connected to the plurality of cells 21 of the cell stack module 20 and the reservoir modules 10 corresponding to the cell stack module 20, respectively. The conduit is used to provide a flow path for the electrolyte in the reservoir module 10 for the plurality of cells 21. The regulating unit 22 is connected to the pipe. The adjustment unit 22 is used for adjusting a fluid parameter in the flow channel. Wherein the fluid parameter is a related parameter for measuring the electrolyte in the flow channel. Illustratively, the fluid parameters include at least one of flow rate, line pressure, etc., without limitation. Illustratively, the regulating unit 22 includes at least one of a governor 221, a magnetic pump 224, a solenoid valve 222, a regulating valve 223, a circulation pump, and the like, which are not limited herein.
The auxiliary control module 30 includes a pipeline acquisition unit 31 and a pipeline control unit 32. The pipe collection unit 31 is connected to the plurality of unit cells 21 of the pile module 20 and the pipe, respectively. The pipe collection unit 31 is used for collecting sub-state information of the pile module 20. Wherein the sub-state information includes at least one of a pre-pump pressure, a pre-stack pressure, a stack temperature, and an inlet flow rate. The pipeline control unit 32 is respectively connected with the pipeline acquisition unit 31 and the adjusting unit 22, and the pipeline control unit 32 is used for controlling the operation state of the adjusting unit 22 according to the sub-state information so as to adjust the fluid parameters in the flow channel.
Taking the case that the sub-state information includes the inlet flow and the adjusting unit 22 includes the adjusting valve 223 as an example, in the application process, the pipe control unit 32 may compare the inlet flow of the galvanic pile module 20 with a preset flow threshold, and increase the opening of the adjusting valve 223 when the inlet flow is smaller than the preset flow threshold, so as to increase the flow of the electrolyte in the flow channel, and further increase the inlet flow of the galvanic pile module 20. The preset flow threshold is preset, and can be determined according to an actual application scenario of the flow battery, and is not limited herein. It should be noted that, here, only by way of example, the pipe control unit 32 may adaptively control the adjusting unit 22 according to the specific structure and practical application scenario of the flow battery.
According to the control circuit of the flow battery, the sub-state information of the pile module 20 is acquired through the pipeline acquisition unit 31, and the sub-state information represents the current running state of the pile module 20, so that the running state of the adjusting unit 22 can be adjusted through the pipeline control unit 32 according to the sub-state information of the pile module 20, the adjustment of the flow parameters of electrolyte in the pipeline of the pile module 20 is realized, namely the reaction rate between the electrolyte in the liquid storage module 10 and a plurality of single cells in the pile module 20 is controlled, and the running state of the pile module 20 can be kept stable, so that the stability of the flow battery is improved.
In one embodiment, referring still to fig. 3, the auxiliary control module 30 further includes a plurality of cell acquisition units 33, a stack acquisition unit 34, and a single stack control unit 35. The plurality of unit cell collection units 33 are respectively connected with the plurality of unit cells of the electric pile module 20 in a one-to-one correspondence manner. The cell collection unit 33 is used for collecting the cell voltage of the cell. The stack collection unit 34 is connected to a plurality of unit cells of the stack module 20. The stack acquisition unit 34 is configured to acquire a stack voltage of the stack module 20. The cell stack control unit 35 is connected to each of the cell collection units 33, the cell stack collection unit 34, and the pipe control unit 32. The unit cell stack control unit 35 is configured to generate a detection signal and a third control command according to the cell voltages of the unit cells, the sub-state information of the stack module 20, and the stack voltage, and send the third control command to the pipe control unit 32 to control the operation state of the pipe control unit 32, thereby controlling the operation state of the adjustment unit 22. Wherein the detection signal is used to indicate whether the stack module 20 is malfunctioning. The third control instruction is used to adjust the operating state of the pipe control unit 32.
Alternatively, the single cell stack control unit 35 may be further connected to at least one of a leakage detection sensor, an insulation detection sensor, an alarm, and a fan, and may be further configured to acquire a leakage detection signal from the leakage detection sensor, an insulation detection signal transmitted from the insulation detection sensor, an alarm signal transmitted from the alarm, and generate a fan control signal, a shutdown signal, and Power State (SOP) information, and transmit the fan control signal to the fan to control an operation State of the fan to adjust a temperature of the cell stack module 20, transmit the shutdown signal to the cell stack module 20 to stop charge and discharge of the cell stack module 20, and transmit the SOP information to the battery cluster control module 40.
Alternatively, the single stack control unit 35, the pipe control unit 32, the stack acquisition unit 34 may be connected with a communication and power bus to connect with the first direct current power supply 72. Wherein the communication and power bus comprises the CAN bus. For example, the first dc power source 72 may be connected to the ac power source 71, wherein the first dc power source 72 is configured to provide a 48V dc voltage and the ac power source 71 is configured to provide a 380V ac voltage.
In the above control circuit of the flow battery, the cell voltage of the cells in the pile module 20 is collected by the cell collection unit 33, the pile voltage of the pile module 20 is collected by the pile collection unit 34, that is, the voltage of the pile module 20 is detected from two dimensions of a part of the cells and the whole pile, and a detection signal is generated by the cell control unit 35 according to the cell voltage and the pile voltage of each cell, so that the fault detection of the pile module 20 is realized, and a third control instruction is generated by the cell control module according to the cell voltage, the pile voltage and the sub-state information of the pile module 20, so that the control of the operation state of the pipeline control unit 32 is realized, and the adjustment of the operation state of the pile module 20 is realized, so that the stability of the pile module 20 is improved.
Fig. 4 provides a schematic structural diagram of a control system of a flow battery. As shown in fig. 4, in one embodiment, the battery cluster control module 40 includes a reservoir acquisition unit and a battery cluster control unit 42. Wherein the liquid storage acquisition unit is connected with the liquid storage module 10. The liquid storage collection unit is used for collecting second state information of the liquid storage module 10. The second state information comprises at least one of gas concentration, tank pressure, liquid storage temperature and liquid level. The gas concentration refers to the gas content generated during the charge and discharge of the pile module 20, and includes, but is not limited to, hydrogen concentration, oxygen concentration, and the like. Illustratively, the reservoir collection unit may be integrated on a printed circuit board (Printed Circuit Board, PCB). Illustratively, the reservoir collection unit may include a positive canister control board 411 and a negative canister control board 412, wherein the positive canister control board 411 is configured to collect second status information of a positive canister in the reservoir module 10, and the negative canister control board 412 is configured to collect second status information of a negative canister.
The battery cluster control unit 42 is respectively connected with the liquid storage acquisition unit and the auxiliary control module 30 corresponding to each pile module 20 of a liquid flow loop. The battery cluster control unit 42 is configured to generate first detection information according to the first state information of each pile module 20 of the liquid flow circuit, and control the operation state of each corresponding auxiliary control module 30 according to the first detection information. The first detection information includes at least one of a State of Charge (SOC), a State of Health (SOH), and a Power State of Power (SOP) of the stack module 20. The battery cluster control unit 42 is further configured to generate second detection information according to the second state information of the reservoir module 10, and control the operation state of the reservoir module 10 according to the second detection information. The second detection information includes at least one of a remaining capacity SOC and a concentration parameter SOH of the electrolyte of the liquid storage module 10.
For the control circuit of the flow battery shown in fig. 2, the jth battery cluster control unit 42 is connected to the jth liquid storage collection unit and the auxiliary control modules 30 corresponding to the n pile modules 20 of the jth liquid flow loop (i.e., the n auxiliary control modules 30 of the jth column), respectively. The jth battery cluster control unit 42 is configured to generate first detection information according to the first state information of the n electric pile modules 20 in the jth column, so as to control the operation states of the n auxiliary control modules 30 in the jth column according to the first detection information. The jth battery cluster control unit 42 is further configured to generate second detection information according to the second status information of the jth reservoir module 10, so as to control the operation status of the jth reservoir module 10 according to the second detection information.
Alternatively, each of the battery cluster control units 42 may be integrated in a high-voltage control box. The high-voltage control box may be connected to each auxiliary control module 30 and the second dc power supply 73 through a communication and power bus. Illustratively, the high voltage control box may be connected to the auxiliary control module 30 via a switch 74. For example, the second dc power source 73 may be connected to the ac power source 71, wherein the second dc power source 73 may be used to provide 24V dc voltage to the high voltage control box, and the ac power source 71 may provide 380V ac voltage to the second dc power source 73.
According to the control circuit of the flow battery, the second state information of the liquid storage module 10 is acquired through the liquid storage acquisition unit, the first detection information is generated through the battery cluster control unit 42 according to the first state information of the electric pile module 20, real-time monitoring of the current operation state of the electric pile module 20 is achieved, the operation state of the electric pile module 20 is controlled through controlling the operation state of the auxiliary control module 30 according to the first detection information, the battery cluster control unit 42 can generate the second detection information according to the second state information of the liquid storage module 10, the operation state of the liquid storage module 10 is controlled according to the second detection information, real-time monitoring and controlling of the current operation state of the liquid storage module 10 are achieved, clustered management of the electric pile module 20 and the liquid storage module 10 in the same liquid flow loop is achieved, independent control of the electric pile module 20 and the liquid storage module 10 in the flow battery is achieved, the coupling degree between the electric pile module 20 and the liquid flow battery is reduced, and stability of the liquid flow battery is improved.
In one embodiment, referring still to fig. 4, the control circuit further includes a plurality of switch modules 80 corresponding to the plurality of galvanic pile modules 20 in parallel. Illustratively, the switch module 80 is a bypass controller. Wherein the battery cluster control unit 42 is further connected to a corresponding switch module 80 of each stack module 20 of the fluid circuit. The battery cluster control unit 42 is further configured to control the on-off state of the corresponding switch module 80 according to the first state information.
When the switch module 80 is in the on state, the switch module 80 shorts the corresponding pile module 20, and the number of pile modules 20 in the current loop is reduced compared to the case that the switch module 80 is in the off state, so that the voltage output by the current loop is correspondingly reduced. Based on this, the on-off state of the switch module 80 corresponding to the pile module 20 is controlled by the battery cluster control unit 42, so that the number of pile modules 20 that normally operate in the flow battery can be effectively controlled, and thus, the storage performance of the flow battery can be accurately controlled, the electric energy utilization rate of the flow battery is improved, and the management performance of the flow battery by the control circuit is further improved.
For example, the battery cluster control unit 42 may control the on-off state of the switch module 80 according to the detection signal sent by the auxiliary control module 30, the first state information of the pile module 20, and the second state information of the reservoir module 10, so as to control whether the pile module 20 corresponding to the switch module 80 is connected to the current loop. The detection signal sent by the auxiliary control module 30 is generated by the auxiliary control module 30 according to the stack voltage of the stack module 20 and the cell voltage of each cell of the stack module 20, and the detection signal is used to indicate whether the stack module 20 is faulty. Therefore, when the detection signal is that the pile module 20 fails, the battery cluster control unit 42 can control the switch module 80 corresponding to the failed pile module 20 to be closed so as to cut off the failed pile module 20 from the current loop, thereby avoiding the influence of the pile module 20 failure on other modules, ensuring the normal operation of the flow lithium battery, avoiding shutdown maintenance, reducing maintenance cost, further improving the stability of the flow battery and improving the reliability of the control circuit of the flow battery.
In one embodiment, with continued reference to fig. 2, the flow battery control circuit may further include a plurality of voltage conversion modules 60. Each voltage conversion module 60 and each pile module 20 in the same row form a current loop. The voltage conversion module 60 is used for converting the voltages output by the pile modules 20 in the same row to supply power to the load. The battery array control module 50 is connected to each of the voltage conversion modules 60. The battery array control module 50 is configured to control the voltage conversion parameters of the corresponding voltage conversion module 60 according to the first status information of each stack module 20 in the same row. The voltage conversion parameter may be, for example, a ratio of a voltage output by the voltage conversion circuit to a voltage output by the current loop. In practical applications, the voltage conversion parameters may be determined according to factors such as the load power supply requirement and the number of the pile modules 20, which is not limited herein.
Taking the control circuit of the flow battery shown in fig. 2 as an example, the control circuit of the flow battery further includes n voltage conversion modules 60, where the ith voltage conversion module 60 and the m pile modules 20 of the ith row are connected in series to form an ith current loop. The ith voltage conversion module 60 is configured to perform voltage conversion on the direct current output by the m pile modules 20 in the ith row, so as to supply power to the load.
For example, the stack conversion module may include a DC/DC conversion unit and a DC/AC conversion unit. The ith DC/DC conversion unit and the m pile modules 20 in the ith row are connected in series to form an ith current loop, and the ith current loop is used for performing voltage conversion on direct current output by the m pile modules 20 in the ith row. The ith DC/AC conversion unit is connected with the ith DC/DC conversion unit and is used for converting the direct current output by the ith DC/DC conversion unit into alternating current so as to supply power for a load. The stack conversion module may be an energy storage inverter (Power Conversion System, PCS), for example.
According to the control circuit of the flow battery, the voltage output by each pile module 20 in the same current loop is converted through the voltage conversion module 60, so that the flow battery can be ensured to stably supply power to a load, and the reliability of the flow battery is improved.
Based on the same inventive concept, the embodiment of the application also provides a control system of the flow battery. With continued reference to fig. 2, the control system of the flow power station includes a flow battery and a control circuit for the flow battery. The flow battery comprises a plurality of electric pile modules 20 and a plurality of liquid storage modules 10 which are arranged in an array. The partial pile modules 20 in the same row are connected to form a current loop, and the partial pile modules 20 in the same column are correspondingly connected to a liquid storage module 10 to form a liquid flow loop. The control circuit of the flow battery is respectively connected with each pile module 20 and each stock solution module 10, and the control circuit of the flow battery is used for controlling the running states of each pile module 20 and each stock solution module 10. The control circuit of the flow battery can be referred to the related content of the foregoing embodiments, and will not be described herein.
The control system of the flow battery comprises the flow battery and a control circuit of the flow battery, wherein the auxiliary control module 30 is used for acquiring the first state information of the electric pile module 20 and controlling the running state of the electric pile module 20; and, the battery cluster control module 40 controls the operation state of the corresponding auxiliary module according to the first state information of each pile module 20 in the same liquid flow loop, and the battery cluster control module 40 obtains the second state information of the liquid storage module 10 in the same liquid flow loop and controls the operation state of the liquid storage module 10; and, the operating state of each of the battery cluster control modules 40 is controlled by the stack array control module according to the first state information of each of the stack modules 20 and the second state information of each of the reservoir modules 10. According to the control circuit of the flow battery, the auxiliary control module 30, the battery cluster control module 40 and the battery array control module 50 are designed in a grading manner, so that grading management of each electric pile module 20 and each liquid storage module 10 in the flow battery is realized, namely, primary control of one electric pile module 20 is realized through the auxiliary control module 30, independent management of a single electric pile module 20 is realized, secondary control of the battery cluster control module 40 and one liquid storage module 10 is realized through the battery array control module 50, clustered management of each electric pile module 20 and each liquid storage module 10 in the same liquid flow loop is realized, three-level control of the battery cluster control module 40 is realized through the battery cluster control module 40, and integral management of each electric pile module 20 and each energy storage module in a liquid flow power station is realized, so that management of the flow battery from multiple levels and multiple granularity is realized, the management efficiency of the flow battery is improved, and the complexity of hardware development and the maintenance difficulty of the flow battery are simplified.
In one embodiment, the control system of the flow battery may further include an energy management module coupled to the battery array control module 50 in the control circuit of the flow battery. The energy management module is configured to generate a scheduling instruction according to a power supply parameter of the load, and send the scheduling instruction to the battery array control module 50 to control an operation state of the battery array control module 50, so as to meet a power supply requirement of the load. The power supply parameters of the load may be determined according to the actual application scenario of the load, which is not limited herein.
With continued reference to fig. 5, the exemplary control system of the liquid circuit battery may further include a display module, where the display module is connected to the battery array control module 50 in the flow battery control system, and the display module is configured to display according to a display signal output by the battery array control module 50. The display signal may be generated by the battery array control module 50 according to the first state information of each stack module 20 and the second state information of each reservoir module 10, where the display signal is used to indicate the running states of each module in the flow battery and the control circuit of the flow battery. The display module may be an LED display screen, for example. Based on the method, the running states of the modules in the control system of the flow battery can be intuitively displayed through the display module, and the management of the flow battery is facilitated.
With continued reference to fig. 5, the control system of the flow battery may also include a data acquisition and monitoring control system 8 (Supervisory Control And Data Acquisition, SCADA) for acquiring operational information of the flow battery. Wherein, each auxiliary control module 30 (FCU) in the control circuit of the flow battery may form an auxiliary control subsystem 3, each battery cluster control module 40 (BCMU) may form a battery cluster control subsystem 4, the battery array control module 50 (BAMU) may form a battery array control subsystem 5, each voltage conversion module 60 may form an energy storage conversion subsystem 6, and the energy management module may form an energy management subsystem 9.
In practical application, the FCU can collect signals such as voltage, current, temperature, pressure and flow of a Redox Flow Battery (RFB), the collected information such as voltage and current is coordinated with the BCMU, the SOC, SOH, SOP of the battery is estimated through an algorithm of the BCMU, the overcharge and overdischarge of the battery are protected, the real-time state of electrolyte and the output condition of a galvanic pile are protected, and the running state of the battery can be displayed through a touch screen and an LED lamp. The FCU can also need to control the start and stop of the circulating pump, and pump the liquid in the positive and negative electrolyte tanks into the electric pile for reaction. In addition, the FCU is provided with a communication interface, can communicate with the BCMU, and sends the running state of the battery to the BAMU through the BCMU to realize on-site control.
The control system of flow battery includes high-pressure control box, and high-pressure control box refers to the hardware control box, and high-pressure control box contains BCMU, and BCMU mainly used is to capacity part, i.e. storage tank system's management, and its effect includes: receiving a monitoring fault signal of the FCU, outputting a feedback control signal of a bypass contactor of the single pile, and performing bypass control on the single pile or the single-column pile; monitoring and controlling parameters (pressure, temperature, oxyhydrogen concentration, liquid level) of the storage tank system; receiving an alarm signal of the storage tank system, and outputting a feedback signal to control the operation of the capacity recovery system and the environment control system; the state of the electrolyte SOC/SOH in the tank system is estimated.
The BAMU is mainly used for receiving a scheduling instruction of the EMS/SCADA, coordinating the stable operation of BCMU, RFB, PCS and meeting a series of electric energy demands such as scheduled frequency modulation peak, voltage regulation, reactive power output, black start and the like.
According to the control system of the flow battery, provided by the embodiment of the application, management of different subsystems is achieved through hierarchical design of the architecture, stability of the flow battery is improved, hardware development complexity of a controller is simplified, and multi-system management efficiency is improved.
In the description of the present specification, reference to the term "some embodiments," "other embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. The utility model provides a control circuit of flow battery, its characterized in that, flow battery includes a plurality of stock solution modules and is a plurality of pile modules that the array was arranged, wherein, is located the part of same line pile module is connected and is constituted the electric current return circuit, is located the part of same line pile module corresponds with one stock solution module is connected to constitute the liquid flow return circuit, control circuit includes:
The auxiliary control modules are connected with the pile modules in a one-to-one correspondence manner, and are used for acquiring first state information of the pile modules and controlling the running states of the pile modules;
the battery cluster control modules are respectively connected with the auxiliary control modules and the liquid storage modules corresponding to the pile modules of the liquid flow loop, and are used for respectively and correspondingly controlling the operation states of the auxiliary control modules according to the first state information of the pile modules of the liquid flow loop, acquiring the second state information of the liquid storage modules and controlling the operation states of the liquid storage modules;
the battery array control module is respectively connected with the battery cluster control modules and is used for controlling the running state of each battery cluster control module according to the first state information of each electric pile module and the second state information of each liquid storage module.
2. The control circuit of the flow battery according to claim 1, wherein the battery array control module is configured to generate a first control instruction according to the first state information of each pile module and the second state information of each reservoir module, and send the first control instruction to the battery cluster control module to control the operation state of the battery cluster control module;
The battery cluster control module is used for generating a second control instruction according to the first control instruction and the first state information of each pile module of the liquid flow loop, sending the second control instruction to each corresponding auxiliary control module so as to control the operation state of each auxiliary control module, and controlling the operation state of the liquid storage module according to the first control instruction and the second state information of the liquid storage module;
the auxiliary control module is used for controlling the running state of the electric pile module according to the second control instruction and the first state information of the electric pile module.
3. The control circuit of the flow battery according to claim 2, wherein the battery cluster control module is connected to the battery array control module and the auxiliary control module corresponding to each pile module in the same row by using a CAN bus, so as to transmit the first control instruction and the second control instruction through the CAN bus.
4. The control circuit of the flow battery according to claim 1, wherein the galvanic pile module comprises a plurality of single cells, a pipe and an adjusting unit, wherein the pipe is respectively connected with the plurality of single cells and the liquid storage module, and is used for providing flow channels of electrolyte in the liquid storage module for the plurality of single cells; the adjusting unit is connected with the pipeline and is used for adjusting the fluid parameters in the flow channel; wherein, the auxiliary control module includes:
The pipeline acquisition unit is respectively connected with the single cells and the pipeline of the electric pile module and is used for acquiring sub-state information of the electric pile module; wherein the sub-state information includes at least one of pre-pump pressure, pre-stack pressure, stack temperature, inlet flow;
and the pipeline control unit is respectively connected with the pipeline acquisition unit and the adjusting unit and is used for controlling the running state of the adjusting unit according to the sub-state information so as to adjust the fluid parameters in the flow channel.
5. The flow battery control circuit of claim 4, wherein the auxiliary control module further comprises:
the single cell collecting units are respectively connected with the single cells of the electric pile module in a one-to-one correspondence manner and are used for collecting the cell voltages of the single cells;
the pile acquisition unit is connected with a plurality of single cells of the pile module and is used for acquiring pile voltage of the pile module;
the single-cell stack control unit is respectively connected with the single-cell collection unit, the electric stack collection unit and the pipeline control unit and is used for generating a detection signal and a third control instruction according to the cell voltage of each single cell, the sub-state information of the electric stack module and the electric stack voltage and sending the third control instruction to the pipeline control unit; the detection signal is used for indicating whether the pile module fails or not.
6. The flow battery control circuit of claim 1, wherein the battery cluster control module comprises:
the liquid storage acquisition unit is connected with the liquid storage module and used for acquiring the second state information of the liquid storage module, wherein the second state information comprises at least one of gas concentration, tank pressure, liquid storage temperature and liquid level;
the battery cluster control unit is respectively connected with the liquid storage acquisition unit and the auxiliary control modules corresponding to the pile modules of the liquid flow loop, and is used for generating first detection information according to the first state information of the pile modules of the liquid flow loop and controlling the operation state of the corresponding auxiliary control modules according to the first detection information; wherein the first detection information includes at least one of a remaining capacity, a degradation parameter, and an available charge-discharge power of the pile module;
the battery cluster control unit is further used for generating second detection information according to the second state information of the liquid storage module and controlling the running state of the liquid storage module according to the second detection information; the second detection information comprises at least one of residual capacity and concentration parameters of electrolyte of the liquid storage module.
7. The control circuit of the flow battery according to claim 6, further comprising a plurality of switch modules connected in parallel with each of the pile modules, wherein the battery cluster control unit is further connected to the switch module corresponding to each of the pile modules of the flow circuit, and wherein the battery cluster control unit is further configured to control the on-off state of the corresponding switch module according to the first state information of the pile module.
8. The flow battery control circuit of claim 1, further comprising:
the voltage conversion modules and the pile modules in the same row form the current loop, and the voltage conversion modules are used for converting the voltage output by the pile modules in the same row so as to supply power for a load; wherein,
the battery array control module is connected with each voltage conversion module, and is used for adjusting the voltage conversion parameters of the corresponding voltage conversion modules according to the first state information of each pile module in the same row.
9. A control system for a flow battery, comprising:
the flow battery comprises a plurality of pile modules and a plurality of liquid storage modules which are arranged in an array, wherein part of pile modules positioned in the same row are connected to form a current loop, and part of pile modules positioned in the same column are correspondingly connected with one liquid storage module to form a liquid flow loop;
the control circuit of the flow battery according to any one of claims 1 to 8, wherein the control circuit of the flow battery is respectively connected to each of the pile modules and each of the reservoir modules, and the control circuit of the flow battery is used for controlling the operation states of each of the pile modules and each of the reservoir modules.
10. The control system of the flow battery of claim 9, further comprising:
the energy management module is connected with the battery array control module in the control circuit of the flow battery, and is used for generating a scheduling instruction according to the power supply parameters of the load and sending the scheduling instruction to the battery array control module so as to control the running state of the battery array control module.
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| CN202311450170.5A CN117613310A (en) | 2023-11-02 | 2023-11-02 | Control circuit and control system of flow battery |
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