Control device, method and equipment applied to flow battery, medium and product

Abstract

The invention relates to a control device, method and equipment applied to a flow battery, a medium and a product. The device comprises a system box and a stack box, the system box is in communication connection with the stack box, a plurality of control units are integrated in the system box, and the control units are used for collecting the temperature, pressure, flow and hydrogen concentration of electrolyte in a flow battery circulation pipeline in real time to obtain corresponding temperature parameters, pressure parameters, flow parameters and hydrogen parameters; a voltage and current sampling unit in the stack box is used for collecting voltage data and current data of the battery and transmitting the voltage data and the current data to the system box; and the system box is also used for adjusting the rotating speed of the circulating pump in the flow battery circulating pipeline, the output power of the heater and the rotating speed of the hydrogen discharging fan in the flow battery circulating pipeline. Therefore, all the control units can be integrated in one electrical control device, electrical connection is simplified, and the difficulty of electrical device manufacturing process and field operation and maintenance troubleshooting is greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery energy storage, and particularly to a control device, method, computer device, computer-readable storage medium, and computer program product for a flow battery. Background Art

[0002] As a new type of electrochemical energy storage technology, flow batteries have attracted much attention in the field of large-scale energy storage due to their advantages such as independent design of energy and power, long cycle life, and fast response. Compared with traditional secondary batteries, flow batteries use external liquid electrolytes as active substances and store electrical energy through redox reactions of ions between positive and negative electrodes.

[0003] In traditional technologies, the control system of a flow battery energy storage device can be divided into multiple control units, such as a liquid flow control unit, a hydrogen discharge unit, an electrochemical cleaning (ECC) control unit, an insulation monitoring unit, a data remote transmission unit, etc., and these units are independently arranged.

[0004] However, the wiring between the control units of the above flow battery energy storage device is complex, and it is difficult to troubleshoot faults. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a control device, method, computer device, computer-readable storage medium, and computer program product for a flow battery that can modularize and integrate the control units of the flow battery and effectively reduce the difficulty of fault troubleshooting.

[0006] In a first aspect, the present application provides a control device for a flow battery. The device includes: a system box and a stack box, the system box and the stack box are communicatively connected, and a plurality of control units are integrated in the system box. The control units are used to collect the temperature, pressure, flow rate, and hydrogen concentration of the electrolyte in the flow battery circulation pipeline in real time to obtain corresponding temperature parameters, pressure parameters, flow rate parameters, and hydrogen parameters.

[0007] The voltage and current sampling unit in the stack box is used to collect the voltage data and current data of the battery and transmit the voltage data and current data to the system box.

[0008] The system box is further used to control the output frequency of the frequency converter according to the voltage data, the current data, the pressure parameter, and / or the flow rate parameter, so as to adjust the rotation speed of the circulation pump in the flow battery circulation pipeline through the output power of the frequency converter.

[0009] The system box is also used to control the output power of the phase angle voltage regulating module according to the temperature parameter, so as to adjust the output power of the heater in the liquid flow battery circulation pipeline through the output power of the phase angle voltage regulating module;

[0010] The system box is also used to control the output power of the frequency converter according to the hydrogen parameter, so as to adjust the rotation speed of the hydrogen exhaust fan in the liquid flow battery circulation pipeline through the output power of the frequency converter.

[0011] In one embodiment, the control unit integrated in the system box further includes at least one of the following:

[0012] The power supply control unit is used to manually or automatically control the power supply;

[0013] The insulation monitoring control unit is used to detect the insulation resistance of the detection lines of the positive and negative busbars of the battery, and perform alarm control when the detected insulation resistance value is abnormal;

[0014] The electrochemistry cleaning control unit is used to perform electrochemistry cleaning on the battery according to the voltage data and the current data.

[0015] In one embodiment, the system box performs data interaction with the stack box via a switch in the system box;

[0016] The system box also performs data interaction with the energy management system via a station switch.

[0017] In one embodiment, the system box is also used to judge the state of the battery according to the voltage data, the current data, the temperature parameter, the pressure parameter, the flow parameter, the hydrogen parameter and the insulation resistance value of the battery, and determine the required charge and discharge data information according to the battery state and then transmit it to the energy management system, so that the energy management system controls the energy storage converter according to the charge and discharge data information;

[0018] The system box is also used to receive the charge and discharge data information feedback processed by the energy management system.

[0019] In one embodiment, the stack box is also used to align and analyze the collected voltage data and current data to obtain an alarm processing strategy, and send the alarm processing strategy to the system box.

[0020] In one embodiment, the system box is also used to control the electrochemistry cleaning valve to close during the electrochemistry cleaning of the battery, and control the electrochemistry cleaning valve to open after the electrochemistry cleaning of the battery is completed;

[0021] The system box is further configured to control the pressure relief valve in the liquid flow battery circulation pipeline to open when the electrolyte enters the pipeline for circulation, and close the pressure relief valve after the air in the pipeline is discharged;

[0022] The system box is further configured to control the exhaust fan to turn on when the temperature inside the system box exceeds the set threshold, and control the exhaust fan and the grille to close when the temperature inside the system box is lower than the set threshold.

[0023] In a second aspect, the present application further provides a control method applied to a liquid flow battery, which is applied to the control device for a liquid flow battery described in any one of the first aspects. The method includes:

[0024] Configure the website addresses for the system box and the stack box, establish a communication connection between the system box and the stack box, establish a communication connection between the system box and the frequency converter, the temperature and humidity sensor, and the insulation monitor, and establish a communication connection between the system box and the battery control unit, the equalization management unit, and the counter electrode management unit inside the stack box;

[0025] Transmit the data collected by the temperature sensor, pressure sensor, flow sensor, and hydrogen concentration sensor in the liquid flow battery circulation pipeline to the system box through the remote input / output interface, and / or

[0026] Transmit the control parameters generated by the system box to the frequency converter and / or the heater through the remote input / output interface, and transmit the control signals generated by the system box to at least one of the electrochemical cleaning valve, the exhaust fan, and the pressure relief valve.

[0027] In a third aspect, the present application further provides a computer device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0028] Configure the website addresses for the system box and the stack box, establish a communication connection between the system box and the stack box, and a communication connection between the system box and the battery management system, the battery control unit, the equalization management unit, the electrode management unit, and the frequency converter;

[0029] Transmit the data collected by the temperature sensor, pressure sensor, flow sensor, and hydrogen concentration sensor in the liquid flow battery circulation pipeline to the system box through the remote input / output interface, and / or

[0030] Transmit the control parameters generated by the system box to the frequency converter and / or the heater through the remote input / output interface, and transmit the control signals generated by the system box to at least one of the electrochemical cleaning valve, the exhaust fan, and the pressure relief valve.

[0031] Fourthly, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0032] Configure the website addresses for the system box and the stack box, establish the communication connection between the system box and the stack box, and the communication connections between the system box and the battery management system, the battery control unit, the equalization management unit, the electrode management unit, and the frequency converter;

[0033] Through the remote input / output interface, transmit the data collected by the temperature sensor, pressure sensor, flow sensor, and hydrogen concentration sensor in the flow battery circulation pipeline to the system box, and / or

[0034] Through the remote input / output interface, send the control parameters generated by the system box to the frequency converter and / or the heater, and send the control signals generated by the system box to at least one of the electrochemically cleaned valve, the exhaust fan, and the pressure relief valve.

[0035] Fifthly, the present application also provides a computer program product, including a computer program. When the computer program is executed by a processor, the following steps are implemented:

[0036] Configure the website addresses for the system box and the stack box, establish the communication connection between the system box and the stack box, and the communication connections between the system box and the battery management system, the battery control unit, the equalization management unit, the electrode management unit, and the frequency converter;

[0037] Through the remote input / output interface, transmit the data collected by the temperature sensor, pressure sensor, flow sensor, and hydrogen concentration sensor in the flow battery circulation pipeline to the system box, and / or

[0038] Through the remote input / output interface, send the control parameters generated by the system box to the frequency converter and / or the heater, and send the control signals generated by the system box to at least one of the electrochemically cleaned valve, the exhaust fan, and the pressure relief valve.

[0039] The above control device, method, computer device, computer-readable storage medium, and computer program product applied to the flow battery integrate multiple control units in the system box. Each control unit respectively and real-time collects the temperature, pressure, flow rate, and hydrogen concentration of the electrolyte in the flow battery circulation pipeline to obtain corresponding temperature parameters, pressure parameters, flow rate parameters, and hydrogen parameters. Thus, each control unit of the flow battery energy storage device can be effectively integrated to form a modular and integrated system box, avoiding the complex wiring between each control unit and reducing the difficulty of troubleshooting. The voltage and current sampling unit in the stack box collects the voltage data and current data of the battery and transmits the voltage data and current data to the system box. Thus, the data interaction between the system box and the stack box can be directly established, and the voltage and current data of the battery can be uniformly collected through the stack box. The system box controls the output frequency of the frequency converter according to the voltage data, the current data, the pressure parameter, and / or the flow rate parameter, so as to adjust the rotation speed of the circulation pump in the flow battery circulation pipeline through the output power of the frequency converter. Thus, the closed-loop regulation of the pressure and flow rate in the flow battery circulation pipeline can be realized, and the dynamic control of the pressure and flow rate can be achieved. The system box controls the output power of the phase angle voltage regulation module according to the temperature parameter, so as to adjust the output power of the heater in the flow battery circulation pipeline through the output power of the phase angle voltage regulation module. Thus, the closed-loop regulation of the electrolyte temperature can be realized, and the control accuracy is high. The system box controls the output power of the frequency converter according to the hydrogen parameter, so as to adjust the rotation speed of the hydrogen discharge fan in the flow battery circulation pipeline through the output power of the frequency converter. Thus, the closed-loop regulation of the hydrogen concentration is realized. This application can integrate control units such as temperature, pressure, flow rate, hydrogen discharge, and data communication involved in the flow battery control into an electrical control device, greatly reducing the redundant and complex electrical connections between each control unit. By adopting point-to-point connection, the manufacturing process of the electrical device and the difficulty of troubleshooting in on-site operation and maintenance are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments of the present application or related technologies. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is a three-dimensional structural schematic diagram of the system box in an embodiment;

[0042] Figure 2 It is a structural schematic diagram inside the system box in an embodiment;

[0043] Figure 3 Schematic structural diagram of a stack box in an embodiment;

[0044] Figure 4 Block diagram of the structure of a control device applied to a flow battery in an embodiment;

[0045] Figure 5 Flowchart of a control method applied to a flow battery in an embodiment;

[0046] Fig. 6(a) is a schematic diagram of the principle of the website configuration process of a control method applied to a flow battery in an embodiment Figure 1 ;

[0047] Fig. 6(b) is a schematic diagram of the principle of the website configuration process of a control method applied to a flow battery in an embodiment Figure 2 ;

[0048] Figure 7 Internal structure diagram of a computer device in an embodiment. Detailed implementation manners

[0049] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0050] In the existing flow battery control system, each functional module of the system box is divided into: multiple control boxes (system control box, power distribution box, ECC control box, battery energy storage system (BESS) control box). During the implementation of the above system box functional modules, it is necessary to cross-connect cables between multiple boxes. For example, when troubleshooting the pressure control system, it is necessary to check the power supply cables of the power distribution box, the acquisition cables of the BESS control box, and the pump speed control system cables of the system control box, resulting in a high difficulty in troubleshooting and a high operation and maintenance cost.

[0051] In view of the above problems, in an exemplary embodiment, a system box structure is provided. Figure 1 Schematic three-dimensional structure diagram of a system box in an embodiment, Figure 2 Schematic internal structure diagram of a system box in an embodiment. As Figure 1 、 Figure 2As shown, the system box 100 is generally in a cabinet structure, and a plurality of control units are integrated in different cabinet layers. For example: an insulation monitoring control unit 101, a frequency conversion control unit 102, a power supply control unit 103, a system control unit 104, a relay automatic control unit 105, a phase angle voltage regulation control unit 106, an equipment power supply automatic control unit 107, an equipment power supply manual control unit 108, and so on. Among them, the insulation monitoring control unit 101 can be used to detect the insulation resistance of the detection lines of the positive and negative busbars of the battery, and perform alarm control when the detected insulation resistance value is abnormal; the frequency conversion control unit 102 can control the output power of the frequency converter, so as to adjust the rotation speed of the circulation pump in the liquid flow battery circulation pipeline and the rotation speed of the hydrogen exhaust fan; the power supply control unit 103 can control the power supply to each device; the system control unit 104 is a software carrier and is used to install various software; the relay automatic control unit 105 can realize relay control; the phase angle voltage regulation control unit 106 can adjust the output power of the phase angle voltage regulation module according to the temperature parameters collected by the system box, so as to achieve the purpose of adjusting the output power of the heater in the liquid flow battery circulation pipeline; the equipment power supply automatic control unit 107 and the equipment power supply manual control unit 108 respectively provide two power supply methods: automatic and manual. Exemplarily, in addition to Figure 2 In addition to the various control units shown, more control units can also be integrated in the system box 100, so as to realize the integration and modularization of the control functions involved in the control of the liquid flow battery, such as temperature, pressure, flow rate, hydrogen exhaust, data communication, etc., greatly reducing the redundant and complex electrical connections between the control units, adopting point-to-point connections, and greatly reducing the difficulty of the manufacturing process of electrical equipment and the troubleshooting of on-site operation and maintenance.

[0052] In an exemplary embodiment, Figure 3 is a schematic structural diagram of a stack box in an embodiment. As Figure 3 shown, the stack box 200 is generally in a cabinet structure. Among them, a voltage and current sampling unit, a peripheral control unit, and a data communication unit are integrated. The voltage and current sampling unit is used to collect the voltage data and current data of the battery, and transmit the voltage data and current data to the system box; the peripheral control unit is used to control other externally connected devices; the data communication unit is used to establish communication with the system box to realize data interaction.

[0053] In an exemplary embodiment, a control device applied to a liquid flow battery is provided. As Figure 4As shown, the device includes: a system box 100 and a stack box 200. The system box 100 and the stack box 200 are communicatively connected. A plurality of control units are integrated in the system box 100. The control units are configured to collect in real time the temperature, pressure, flow rate, and hydrogen concentration of the electrolyte in the liquid flow battery circulation pipeline to obtain corresponding temperature parameters, pressure parameters, flow rate parameters, and hydrogen parameters. The voltage and current sampling unit in the stack box 200 is configured to collect the voltage data and current data of the battery and transmit the voltage data and current data to the system box. The system box 100 is further configured to control the output frequency of the frequency converter according to the voltage data, the current data, the pressure parameter, and / or the flow rate parameter, so as to adjust the rotation speed of the circulation pump in the liquid flow battery circulation pipeline through the output power of the frequency converter. The system box 100 is further configured to control the output power of the phase angle voltage regulation module according to the temperature parameter, so as to adjust the output power of the heater in the liquid flow battery circulation pipeline through the output power of the phase angle voltage regulation module. The system box 100 is further configured to control the output power of the frequency converter according to the hydrogen parameter, so as to adjust the rotation speed of the hydrogen discharge fan in the liquid flow battery circulation pipeline through the output power of the frequency converter.

[0054] The device in this embodiment can be applied to a liquid flow battery energy storage device. In a liquid flow battery energy storage device, generally two positive and negative circulation pumps are used to pump the positive and negative electrolytes out of their respective storage tanks, flow through the circulation pipeline into the stack (i.e., the battery), and after chemical reactions at the stack, flow out and return to the electrolyte storage tank through the circulation pipeline. During this process, the temperature, pressure, and flow rate of the electrolyte need to be dynamically adjusted.

[0055] In this embodiment, when the electrolyte enters the pipeline circulation, the pressure sensor, temperature sensor, and differential pressure sensor on the pipeline will generate current signals and transmit them to the system controller of the system box. The controller of the system box detects and calculates to obtain the pressure, temperature, and differential pressure data of the electrolyte in the current pipeline. The atmospheric pressure sensor detects and transmits the atmospheric pressure in the air to the system controller of the system box in real time, so that the atmospheric pressure of the current environment of the battery system can be determined. The hydrogen sensor detects and transmits the hydrogen concentration in the hydrogen pipeline of the liquid tank to the system controller of the system box in real time, so as to determine the hydrogen concentration in the collection pipeline.

[0056] Optionally, the process for pressure collection and control may include: the system box uniformly collects the pressure of the liquid in the pipeline in real time, the voltage and current data of the stack (i.e., the battery) are collected by the stack box in real time and transmitted to the system box, and the system box controls the output frequency of the frequency converter after calculation according to the collected parameters, so as to adjust the rotation speed of the circulation pump and realize the closed-loop regulation of the pressure.

[0057] Optionally, the process for flow rate collection and control may include: the system box uniformly and real-time collects the flow rate of the liquid in the pipeline, the voltage and current data of the stack (i.e., the battery) are real-time collected by the stack box and transmitted to the system box, and the system box controls the output frequency of the frequency converter after calculation based on the collected parameters, thereby adjusting the rotation speed of the circulation pump to achieve closed-loop regulation of the flow rate.

[0058] Optionally, the process for temperature collection and control may include: the system box controls the output of the phase angle voltage regulation module after calculation based on the collected parameters, thereby adjusting the output power of the heater to achieve closed-loop control of the temperature.

[0059] Optionally, during the process that the electrolyte flows through the stack (i.e., the battery) via the pipeline, hydrogen may be generated due to chemical reactions of the electrolyte during charge and discharge. Therefore, the process for hydrogen collection and control may include: the system box uniformly and real-time collects the hydrogen concentration in the pipeline, and the system box controls the output frequency of the frequency converter after calculation based on the collected parameters, thereby controlling the rotation speed of the hydrogen exhaust fan to achieve closed-loop regulation of hydrogen exhaust.

[0060] In an optional implementation manner, the control unit integrated in the system box further includes at least one of the following:

[0061] A power supply control unit, configured to manually or automatically control the power supply;

[0062] An insulation monitoring control unit, configured to detect the insulation resistance of the detection lines of the positive and negative busbars of the battery, and perform alarm control when an abnormal insulation resistance value is detected;

[0063] An electrochemistry cleaning control unit, configured to perform electrochemistry cleaning on the battery according to the voltage data and the current data.

[0064] In this embodiment, the insulation monitoring control unit may be an insulation monitor installed in the system box, and the insulation monitor monitors the detection lines of the positive and negative busbars of the battery connected to the system box, and the system box performs alarm control according to the detected insulation resistance value.

[0065] In this embodiment, the electrochemistry cleaning control unit provides an electrochemistry cleaning function. The voltage and current data of the stack (i.e., the battery) are real-time collected by the stack box and transmitted to the system box, and then the system box judges the battery state according to the collected parameters and performs electrochemistry cleaning on the battery after calculation.

[0066] Exemplarily, the system box 100 performs data interaction with the stack box 200 via a switch in the system box; the system box 100 also performs data interaction with an energy management system via a station switch.

[0067] In this embodiment, the wiring of the system box can be divided into southbound connection and northbound connection. Among them, the southbound connection means that the system box conducts data communication and interaction (bidirectional transmission) with the stack box via the in-box switch. The northbound connection means that the system box conducts data communication and interaction (bidirectional transmission) with the Energy Management System (EMS) via the in-station switch.

[0068] Exemplarily, the system box 100 is further configured to judge the state of the battery according to the voltage data, the current data, the temperature parameter, the pressure parameter, the flow parameter, the hydrogen parameter, and the insulation resistance value of the battery, and determine the required charge and discharge data information according to the battery state and then transmit it to the energy management system, so that the energy management system controls the energy storage converter according to the charge and discharge data information; the system box 100 is further configured to receive the charge and discharge data information fed back by the energy management system after processing.

[0069] In this embodiment, the system box judges the current system state, battery state, and required charge and discharge data information according to the collected battery parameters, pressure, temperature, flow, insulation and other parameters and then transmits them to the EMS. The EMS controls the energy storage converter (Power Conversion System, PCS) after scheduling and processing the received data information, and transmits the scheduled and processed charge and discharge data information to the system box.

[0070] Exemplarily, the stack box 200 is further configured to align and analyze the collected voltage data and current data to obtain an alarm processing strategy, and send the alarm processing strategy to the system box 100.

[0071] Exemplarily, the system box 100 is further configured to control the electrochemistry cleaning valve to close during the electrochemistry cleaning process of the battery, and control the electrochemistry cleaning valve to open after the electrochemistry cleaning of the battery is completed.

[0072] Exemplarily, the system box 100 is further configured to control the pressure relief valve in the liquid flow battery circulation pipeline to open when the electrolyte enters the pipeline circulation, and close the pressure relief valve after the air in the pipeline is discharged.

[0073] Exemplarily, the system box 100 is further configured to control the exhaust fan to turn on when the temperature inside the system box exceeds the set threshold, and control the exhaust fan and grille to close when the temperature inside the system box is lower than the set threshold.

[0074] In the device according to the embodiment of the present application, a liquid flow control system (electrolyte pressure acquisition and control, temperature acquisition and control), a hydrogen exhaust system, an ECC control system, and an insulation monitoring system are integrated in an electrical control device, greatly reducing the redundant and complex electrical connections between control systems. By using point-to-point connections, the manufacturing process of electrical equipment and the difficulty of troubleshooting on-site operation and maintenance are greatly reduced. In addition, the number of control box devices can be reduced, and the occupied area of the devices can be decreased.

[0075] In an exemplary embodiment, as Figure 5 shown, a control method applied to a flow battery is provided. Taking the method applied to the Figure 4 device as an example, it includes the following steps 501 to step 502. Among them:

[0076] Step 501, configure the website addresses for the system box and the stack box.

[0077] In this embodiment, by configuring the website addresses for the system box and the stack box, a communication connection between the system box and the stack box is established, a communication connection between the system box and the frequency converter, the temperature and humidity sensor, and the insulation monitor is established, and a communication connection between the system box and the battery control unit, the equalization management unit, and the counter electrode management unit in the stack box is established.

[0078] Step 502, perform data interaction between the system box and external devices through the remote input / output interface.

[0079] In this embodiment, through the remote input / output interface, the data collected by the temperature sensor, the pressure sensor, the flow sensor, and the hydrogen concentration sensor in the flow battery circulation pipeline is transmitted to the system box; and / or, through the remote input / output interface, the control parameters generated by the system box are sent to the frequency converter and / or the heater, and the control signals generated by the system box are sent to at least one of the electrochemical cleaning valve, the exhaust fan, and the pressure relief valve.

[0080] In an exemplary embodiment, a schematic diagram of the principle of a URL configuration process for a control method applied to a flow battery is provided. As shown in FIGS. 6(a) and 6(b), an Energy Management System (EMS) is communicatively connected to a station-level switch through a network. The station-level switch is communicatively connected to a Battery Management System (BMS) through Transmission Control Protocol / Internet Protocol (TCP / IP). The BMS is communicatively connected to an insulation detector (GRF), a frequency converter, and a temperature and humidity controller via an RS485 interface. The BMS is also communicatively connected to multiple Battery Control Units (BCUs) through an in-box switch. Among them, the BCU is communicatively connected to a Balance Unit (BLU) and a Counter Electrode Unit (CEU) through an RS422 or RS485 interface. The BMS is also communicatively connected to a remote input / output interface (I / O) through an in-box switch. Among them, the remote input / output interface may include: Digital Input (DI), Digital Output (DO), Analog Input (AI), Analog Output (AO), and Thermocouple (TC).

[0081] It should be noted that although in the embodiment shown in FIG. 6(a), the EMS performs data interaction with two BMSs through the station-level switch via TCP / IP, the method in this application does not limit the number of BMSs. That is, the EMS can establish data interaction with multiple BMSs through the station-level switch.

[0082] In this embodiment, the signals input by the DI may include: emergency stop, heater feedback, frequency converter feedback, liquid level feedback, leakage feedback, ECC valve feedback, door limit, and insulation feedback. Among them, the emergency stop refers to the emergency stop signal fed back by the emergency stop button to the system box system controller; the heater feedback refers to the switch signal fed back by the heater switch to the system box system controller; the frequency converter feedback refers to the output power signal fed back by the frequency converter to the system box system controller; the liquid level feedback refers to the liquid level signal fed back by the storage tank liquid level sensor to the system box system controller; the leakage feedback refers to the leakage signal fed back by the leakage sensor to the system box system controller; the ECC valve feedback refers to the switch signal fed back by the ECC valve to the system box system controller; the door limit refers to the switch signal fed back by the limit switch on the entire flow battery container door to the system box system controller; the insulation feedback refers to the resistance value fed back by the insulation monitor to the system box system controller.

[0083] In this embodiment, the control signals output by the DO may include: frequency converter control signal, heater control signal, ECC resistor control signal, ECC valve control signal, pressure relief control signal, and exhaust fan control signal. Among them, the frequency converter control means that the system box uniformly and real-time collects the pressure of the liquid in the pipeline, and the voltage and current data of the stack (i.e., the battery) are real-time collected by the stack box and transmitted to the system box. The system box calculates according to the collected parameters and then controls the output frequency of the frequency converter, thereby adjusting the rotation speed of the circulation pump to achieve closed-loop regulation of the pressure. The heater control means that the system box calculates according to the collected parameters and then controls the output of the phase angle voltage regulation module, thereby adjusting the output power of the heater to achieve closed-loop control of the temperature. The ECC resistor control means that the voltage and current data of the stack (i.e., the battery) are real-time collected by the stack box and transmitted to the system box. The system box judges the battery state according to the collected parameters and performs ECC cleaning on the battery after calculation. The ECC valve control means that during the process of performing the ECC cleaning function, the ECC valve in the pipeline needs to be closed, and after the ECC cleaning is completed, the ECC valve is opened. The pressure relief valve control means that when the electrolyte enters the pipeline circulation, the air inside the pipeline needs to be squeezed out, and the pressure relief valve needs to be opened. After the gas is discharged, the pressure relief valve is closed. The exhaust fan control means that it is controlled according to the ambient temperature inside the box. When the temperature exceeds the set threshold, the fan is turned on and the intake grille is opened. When the temperature is lower than the set threshold, the fan is turned off and the grille is closed.

[0084] In this embodiment, the signals input by the AI may include: pressure detection signal, temperature detection signal, differential pressure detection signal, atmospheric pressure detection signal, and hydrogen detection signal. Among them, when the electrolyte enters the pipeline circulation, the pressure sensor, temperature sensor, and differential pressure sensor on the pipeline will generate current signals and transmit them to the system box system controller. The system box controller detects and calculates to obtain the pressure, temperature, and differential pressure data of the electrolyte in the current pipeline. The atmospheric pressure detection means that the atmospheric pressure sensor real-time detects and transmits the atmospheric pressure in the air to the system box system controller. The hydrogen detection means that during the process of the electrolyte flowing through the stack (i.e., the battery) through the pipeline, as the charge and discharge proceed, the electrolyte may undergo a chemical reaction to generate hydrogen, and the system box uniformly and real-time collects the hydrogen concentration in the pipeline.

[0085] In this embodiment, the signals output by the AO may include: heater voltage regulation signal. The system box calculates according to the collected parameters and then controls the output of the phase angle voltage regulation module, thereby adjusting the output power of the heater to achieve closed-loop control of the temperature. TC is the heating signal for the thermocouple. When the temperature in the pipeline drops below the set threshold, the thermocouple is controlled to heat.

[0086] Exemplarily, in combination with the website configuration process shown in FIGS. 6(a) and 6(b), the industrial computer (PC) in the system control area can be powered on and the IP is set to 192.168.1.99; for the website configuration of the stack box, the stack box IP DIP switch can be set in the order of 1-10.

[0087] In this embodiment, by configuring the website for the system box and the stack box, a communication connection between the system box and the stack box, as well as communication connections between the system box and the battery management system, the battery control unit, the equalization management unit, the counter electrode management unit, and the frequency converter are established; through the remote input / output interface, the control parameters generated by the system box are sent to the frequency converter and / or the heater, and the control signals generated by the system box are sent to at least one of the electrochemical cleaning valve, the exhaust fan, and the pressure relief valve. Thus, the liquid flow control system (electrolyte pressure acquisition and control, temperature acquisition and control), the hydrogen exhaust system, the ECC control system, and the insulation monitoring system are integrated into one electrical control device, thereby greatly reducing the redundant and complex electrical connections between the control systems. By using point-to-point connections, the manufacturing process of electrical equipment and the difficulty of troubleshooting on-site operation and maintenance are greatly reduced. In addition, the number of control box devices can be reduced, and the occupied area of the devices can be decreased.

[0088] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are shown in sequence according to the arrows, these steps do not necessarily need to be executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages do not necessarily need to be executed at the same moment, but can be executed at different moments. The execution order of these steps or stages does not necessarily need to be sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0089] Each module in the above control device applied to the flow battery can be implemented in whole or in part by software, hardware, and their combination. The above-mentioned modules can be embedded in the processor in the computer device in hardware form or be independent of it, or can be stored in the memory in the computer device in software form, so that the processor can call and execute the operations corresponding to the above-mentioned modules.

[0090] In an exemplary embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 7As shown in the figure. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC), or other technologies. When the computer program is executed by the processor, it implements a control method applied to a flow battery. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0091] Those skilled in the art can understand that Figure 7 the structure shown in the figure is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0092] In an exemplary embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above method embodiments are implemented.

[0093] In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by the processor, the steps in the above method embodiments are implemented.

[0094] In an embodiment, a computer program product is provided, including a computer program. When the computer program is executed by the processor, the steps in the above method embodiments are implemented.

[0095] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with relevant regulations.

[0096] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., and are not limited thereto. The processors involved in the embodiments provided in this application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, artificial intelligence (AI) processors, etc., and are not limited thereto.

[0097] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this application.

[0098] The above-described embodiments merely represent several implementation manners of this application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application shall be subject to the appended claims.

Claims

1. A control device for a flow battery, characterized in that: The device comprises: a system box and a stack box, wherein the system box and the stack box are communicatively connected, wherein a plurality of control units are integrated in the system box, and wherein the control unit is used to collect the temperature, pressure, flow rate, and hydrogen concentration of the electrolyte in the circulation pipeline of the flow battery in real time to obtain corresponding temperature parameters, pressure parameters, flow rate parameters, and hydrogen parameters; The voltage and current sampling unit in the stack box is used to collect voltage data and current data of the battery and transmit the voltage data and current data to the system box; The system box is further used to control the output frequency of the frequency converter according to the voltage data, the current data, the pressure parameter, and / or the flow parameter, so that the speed of the circulation pump in the circulation pipeline of the flow battery is adjusted by the output power of the frequency converter; The system box is further used to control the output power of the phase angle voltage regulating module according to the temperature parameter, so that the output power of the heater in the circulation pipeline of the flow battery is adjusted by the output power of the phase angle voltage regulating module; The system box is also used to control the output power of the frequency converter according to the hydrogen parameters, so that the speed of the hydrogen exhaust fan in the liquid flow battery circulation pipeline is adjusted by the output power of the frequency converter.

2. The device according to claim 1, characterized in that The control unit integrated in the system box further comprises at least one of the following: A power supply control unit, used to manually or automatically control the power supply; The insulation monitoring control unit is used to detect the insulation resistance of the detection circuits of the positive busbar and the negative busbar of the battery, and to perform alarm control when abnormal insulation resistance is detected; An electrochemical cleaning control unit is used to perform electrochemical cleaning on the battery according to the voltage data and the current data.

3. The device according to claim 1, characterized in that The system box exchanges data with the stack box via a switch in the system box; The system box also exchanges data with the energy management system via the in-station switch.

4. The device according to claim 3, characterized in that The system box is further used to judge the state of the battery according to the voltage data, the current data, the temperature parameter, the pressure parameter, the flow parameter, the hydrogen parameter and the insulation resistance of the battery, and determine the required charge and discharge data information according to the battery state and transmit it to the energy management system, so that the energy management system controls the energy storage converter according to the charge and discharge data information; The system box is also used to receive the charging and discharging data information after feedback processing by the energy management system.

5. The device according to any one of claims 1 to 4, characterized in that: The stack box is also used to align and analyze the collected voltage data and current data to obtain an alarm processing strategy, and send the alarm processing strategy to the system box.

6. The device according to claim 2, characterized in that The system box is also used to control the electrochemical cleaning valve to close during the electrochemical cleaning of the battery, and to control the electrochemical cleaning valve to open after the electrochemical cleaning of the battery is completed; The system box is also used to control the opening of the pressure relief valve in the circulation pipeline of the flow battery when the electrolyte enters the pipeline for circulation, and to close the pressure relief valve after the air in the pipeline is discharged; The system box is also used to control the exhaust fan to turn on when the temperature in the system box exceeds a set threshold, and to control the exhaust fan and the grille to turn off when the temperature in the system box is lower than the set threshold.

7. A control method for a flow battery, characterized in that: Applied to the device according to any one of claims 1 to 6, the method comprises: Performing website configuration on the system box and the stack box, establishing a communication connection between the system box and the stack box, establishing a communication connection between the system box and the frequency converter, the temperature and humidity sensor, and the insulation monitor, and establishing a communication connection between the system box and the battery control unit, the balancing management unit, and the electrode management unit in the stack box; The data collected by the temperature sensor, pressure sensor, flow sensor, and hydrogen concentration sensor in the circulation pipeline of the flow battery are transmitted to the system box through the remote input and output interface, and / or Through the remote input and output interface, the control parameters generated by the system box are sent to the frequency converter and / or the heater, and the control signal generated by the system box is sent to at least one of the electrochemical cleaning valve, the exhaust fan, and the pressure relief valve.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to claim 7 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 7 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to claim 7 are implemented.

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