Movable flow battery filling device control system and method

Abstract

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

Description

Technical Field

[0001] This application relates to the field of battery filling technology, and in particular to a control system and method for a mobile flow battery filling device. Background Technology

[0002] Electrolyte, as a key component of flow batteries, serves as the carrier for ion transport, acting as a conductor between the positive and negative electrodes. With the global energy structure transformation, the intermittency and instability of renewable energy sources such as wind and solar power pose challenges to the stable operation of power grids. Long-term and large-scale energy storage technologies have become crucial, and electrolytes have attracted significant attention due to their scalable energy and power density, long lifespan, and environmental friendliness. The electrolyte in flow batteries is a key medium for energy storage, and the quality of electrolyte filling directly affects the battery's performance and lifespan.

[0003] Traditional electrolyte filling devices are typically fixed in specific locations, making them unsuitable for certain special scenarios. For example, in large-scale energy storage power stations, electrolyte modules may be distributed in different locations, requiring flexible filling methods. Existing filling technologies rely on manual filling, which is time-consuming and requires multiple personnel to monitor the filling progress in real time. Furthermore, the liquid's contact with air poses a risk of foreign matter entering the system.

[0004] During the electrolyte filling process, the electrolyte filling needs to be precisely controlled to ensure the performance and safety of the battery. However, in the actual filling process, liquid splashing and contact between the electrolyte and moisture and impurities in the air can easily occur, making it impossible to ensure the accuracy of the filling amount. Summary of the Invention

[0005] Therefore, it is necessary to provide a control system and method for a mobile flow battery filling device that can improve the accuracy of the filling volume, in order to address the above-mentioned technical problems.

[0006] In a first aspect, this application provides a control system for a portable flow battery filling device, including: a buffer tank, a filling control module, and a controller; The buffer tank is used to receive incoming materials through multiple feed ports; The infusion control module is located on the buffer tank, the connecting pipe between the buffer tank and the target liquid storage tank, and the target liquid storage tank. It is used to receive the control signal from the controller and control the electrolyte delivery. The controller is used to receive the flow meter signal on the pipeline and the liquid level gauge signal of the target liquid storage tank, calculate the electrolyte volume flowing into the target liquid storage tank, and send control signals to the buffer tank and the filling control module according to the electrolyte volume flowing into the target liquid storage tank and the target liquid storage tank capacity, so as to adjust the filling speed of the electrolyte in segments proportionally.

[0007] In one embodiment, the infusion control module further includes a feed control valve and a discharge control valve, which are used to adjust the flow rate of the delivered electrolyte according to the valve control signal sent by the controller during the electrolyte delivery process, and to stop the delivery of the electrolyte when the electrolyte level reaches the preset buffer tank position or the preset storage tank position.

[0008] In one embodiment, the infusion control module further includes a delivery pump, which is a variable frequency pump, for delivering the electrolyte to the target storage tank.

[0009] In one embodiment, the infusion control module further includes a pump controller, which is used to adjust the rotation speed of the delivery pump according to the pump control signal sent by the controller during the electrolyte transportation process, when the electrolyte level reaches a preset position, so as to control the flow rate of the delivered electrolyte.

[0010] In one embodiment, the pump controller adjusts the flow rate of the delivery pump by controlling the motor speed or by pneumatic control.

[0011] In one embodiment, the infusion control module further includes a float level controller, which is placed in the target storage tank; The float level controller is used to provide the level gauge signal of the target storage tank.

[0012] In one embodiment, the control system for the mobile flow battery filling device further includes a mobile carrier with wheels at its bottom.

[0013] Secondly, this application provides a control method for a portable flow battery filling device, the method comprising: The liquid levels of the buffer tank and the target storage tank are obtained by means of a level gauge on the buffer tank and a float level controller on the target storage tank, respectively. Based on the level of the buffer tank, a control signal is sent to the filling control module to control the flow rate adjustment of the delivered electrolyte. When the level of the buffer tank reaches the preset buffer tank position, a control signal is sent to the filling control module to control the stopping of the delivery of the electrolyte into the buffer tank and the target storage tank. Based on the liquid level of the target storage tank, a control signal is sent to the filling control module to control the flow rate adjustment of the delivered electrolyte. When the liquid level of the target storage tank reaches the preset storage tank position, a control signal is sent to the filling control module to control the stopping of the delivery of electrolyte into the target storage tank. An alarm signal is issued when the target liquid storage tank is full.

[0014] In one embodiment, the step of sending a control signal to the filling control module when the buffer tank level reaches a preset buffer tank position to control the stop of the electrolyte delivery into the buffer tank and the target storage tank includes: When the liquid level in the buffer tank reaches the preset high level position, a valve control signal is sent to the feed control valve of the filling control module to control the stop of the electrolyte being delivered into the buffer tank. When the liquid level in the buffer tank reaches the preset low level position, a valve control signal is sent to the discharge control valve of the filling control module or a pump control signal is sent to the pump controller to control the stop of the electrolyte being delivered into the target storage tank.

[0015] In one embodiment, the step of sending a control signal to the filling control module to control the stopping of electrolyte delivery into the target storage tank when the liquid level in the target storage tank reaches a preset storage tank position includes: When the liquid level in the target storage tank reaches the preset high liquid level position, a valve control signal is sent to the discharge control valve of the filling control module or a pump control signal is sent to the pump controller to control the stopping of the electrolyte delivery into the target storage tank.

[0016] In summary, this application includes the following beneficial technical effects: The filling control module controls the electrolyte delivery based on the controller's control signals. The controller receives signals from the flow meter on the pipeline and the level gauge of the target storage tank, calculates the electrolyte volume flowing into the target storage tank, and sends control signals to the buffer tank and filling control module to adjust the electrolyte filling speed in segments. This achieves automated control, reduces manual operation, and significantly improves filling efficiency. It can effectively fill and control the process even when the capacity of the target storage tank is unknown, and can adapt to more diverse filling environments and conditions, significantly expanding the application range of flow battery filling technology and ensuring the accuracy of the filling volume. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the control system for a portable flow battery filling device in one embodiment. Figure 2 This is a detailed schematic diagram of the control system for a movable flow battery filling device in another embodiment; Figure 3 This is a flowchart illustrating a control method for a movable flow battery filling device in one embodiment. Figure 4 Flowchart of the feeding control method for the electrolyte filling device; Figure 5 Flowchart of the electrolyte filling device discharge control method. Detailed Implementation

[0018] This invention provides a control system and method for a portable flow battery filling device.

[0019] The embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the accompanying drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0020] In the description of the embodiments disclosed in this invention, the term "comprising" and similar terms should be understood as open-ended inclusion, i.e., "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0021] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 One embodiment of the control system for the portable flow battery filling device in this invention includes: a buffer tank 100, a filling control module 200, and a controller 300; The buffer tank 100 is used to receive incoming materials through multiple feed ports; the filling control module 200 is located on the buffer tank 100, the connecting pipe between the buffer tank 100 and the target liquid storage tank 400, and the target liquid storage tank 400, and is used to receive control signals from the controller 300 to control the electrolyte delivery; the controller 300 is used to receive the flow meter signal on the pipe and the liquid level gauge signal of the target liquid storage tank, calculate the electrolyte volume flowing into the target liquid storage tank 400, and send control signals to the buffer tank 100 and the filling control module 200 according to the electrolyte volume flowing into the target liquid storage tank 400 and the target liquid storage tank volume, so as to adjust the electrolyte filling speed in segments proportionally.

[0022] Specifically, the buffer tank 100 is made of PP, PPH, and PVC, which are corrosion-resistant and suitable for various flow batteries on the market. It includes multiple feed inlets and a high / low level gauge to accept materials from different sources. Multiple feed inlets can feed simultaneously to ensure stable material supply. The filling control module 200 is located on the buffer tank 100, the connecting pipe between the buffer tank 100 and the target liquid storage tank 400, and the target liquid storage tank 400. It receives control signals from the controller 300, controls the electrolyte delivery, and adjusts the delivery speed and direction of the electrolyte to meet the needs of different operating conditions. Based on the target liquid storage tank capacity, the controller 300 adjusts the electrolyte delivery flow rate by controlling the frequency converter as the liquid level in the target liquid storage tank increases. A lower delivery flow rate results in a smoother filling speed. To prevent electrolyte splashing, segmented proportional adjustment is achieved. Specifically, a flow meter monitors the electrolyte flow rate in the pipeline, and a level gauge detects the real-time liquid level in the storage tank. This data is fed back to the controller 300. The controller 300 calculates the electrolyte volume flowing into the target liquid storage tank 400 by real-time monitoring of the flow meter signals in the pipeline and the level gauge signals in the target liquid storage tank. It then compares this to the target liquid storage tank capacity, generates a control signal, and sends it to the buffer tank 100 and the filling control module 200. This dynamically adjusts the filling speed, achieving segmented proportional adjustment. Maximum filling speed is achieved without electrolyte splashing. For example, when the liquid level in the target liquid storage tank approaches the upper limit of its capacity, the controller 300 sends a deceleration signal to the filling control module 200 to prevent overflow.

[0023] In this embodiment, the control system of the mobile flow battery filling device breaks through the traditional fixed-speed filling mode through the coordinated work of multiple feed inlets, filling control module 200 and controller 300. It realizes segmented ratio adjustment through real-time calculation, improves efficiency and reduces the risk of overflow; the precise control of the electrolyte filling process ensures the efficient operation and stability of the system.

[0024] The mobile flow battery filling device control system significantly improves filling efficiency and reduces the need for manual operation through automation technology. It has precise filling capacity control, greatly shortens the filling cycle, and simplifies the entire filling process by eliminating the need for frequent disassembly and assembly of pipes, valves and pumps.

[0025] In one embodiment, such as Figure 2 As shown, the filling control module 200 also includes a feed control valve 201 and a discharge control valve 202. The feed control valve 201 and the discharge control valve 202 are used to adjust the flow rate of the electrolyte during the electrolyte delivery process according to the valve control signal sent by the controller 300. When the electrolyte level reaches the preset buffer tank position or the preset storage tank position, the delivery of the electrolyte is stopped.

[0026] Specifically, the filling control module 200 also includes a feed control valve 201 and a discharge control valve 202. The opening and closing of the feed control valve 201 and the discharge control valve 202 are directly driven by valve control signals sent by the controller 300. When the electrolyte enters the buffer tank 100 or the target storage tank 400, the system will determine whether to stop the delivery based on the preset liquid level position to prevent the liquid level from being too high or too low, thereby ensuring the normal operation of the entire system. The function of the feed control valve 201 is to regulate the flow rate into the buffer tank 100 according to the control signal sent by the controller 300. When the controller 300 detects that the liquid level is lower than the set value, the feed control valve 201 will open, allowing the electrolyte to flow into the buffer tank 100; and when the liquid level reaches the set value, the feed control valve 201 will close, stopping the feeding. The discharge control valve 202 is used to control the flow rate of electrolyte into the target storage tank 400. When the liquid level reaches the preset storage tank position, the discharge control valve 202 will close according to the sent control signal, stopping the electrolyte from flowing into the target storage tank 400. The discharge control valve 202 and the target storage tank 400 are connected by a hose, which facilitates mobile filling and is suitable for target storage tanks 400 of various heights and sizes. In this embodiment, the feed control valve 201 and the discharge control valve 202 play a crucial role in the electrolyte delivery system. They receive signals from the controller to precisely control the flow rate of the electrolyte and stop delivery when the liquid level reaches a preset position, thereby ensuring the stable operation of the system.

[0027] In one embodiment, the infusion control module 200 further includes a delivery pump 203, which is a variable frequency pump used to deliver electrolyte to the target storage tank 400.

[0028] Specifically, the transfer pump 203 is a variable frequency pump. The output flow rate of the pump is controlled by adjusting the rotational speed of the transfer pump 203, thereby achieving precise control of the electrolyte delivery speed. The transfer pump 203 delivers the electrolyte to the target storage tank 400 according to the set flow rate. During this process, the control system monitors and adjusts the pump speed in real time to ensure the stability of the delivery process. If an abnormality is detected (such as insufficient flow or abnormal liquid level), the system will automatically take corresponding protective measures, such as stopping the operation of the transfer pump 203 or issuing an alarm. After the filling task is completed, the control system will gradually shut down the operation of the transfer pump 203. In this embodiment, the delivery pump 203 achieves high-precision control of electrolyte delivery, ensuring uniform distribution and stable supply of the liquid.

[0029] In one embodiment, the infusion control module 200 further includes a pump controller 204, which is used to adjust the speed of the delivery pump 203 when the electrolyte level reaches a preset position according to the pump control signal sent by the controller 300 during the electrolyte transportation process, so as to control the flow rate of the delivered electrolyte.

[0030] Specifically, the pump controller 204 is the core control component. Its main function is to receive pump control signals from the controller 300 and adjust the rotational speed of the delivery pump 203. When the electrolyte level reaches a preset position, the controller 300 sends a control signal to the pump controller 204, which then adjusts the rotational speed of the delivery pump 203 according to the signal. If the electrolyte level is higher than the set value, the pump controller 204 will reduce the rotational speed of the delivery pump 203 to decrease the electrolyte output; conversely, if the electrolyte level is lower than the set value, it will increase the rotational speed of the delivery pump 203 to increase the electrolyte delivery volume. This control method effectively prevents electrolyte overflow or insufficiency, thereby ensuring the normal operation of the system.

[0031] In this embodiment, the pump controller 204 adjusts the rotation speed of the delivery pump 203 to achieve precise control of the electrolyte flow rate, thereby ensuring the stability and efficiency of the electrolyte during transportation.

[0032] In one embodiment, the pump controller 204 adjusts the flow rate of the delivery pump by controlling the motor speed or by pneumatic control.

[0033] Specifically, motor speed is the core parameter for regulating pump flow. By adjusting the motor speed, the speed of the delivery pump can be changed, thereby altering the output flow of the delivery pump 203 to meet the needs of different operating conditions. Pneumatic control is a common flow regulation method. It controls the pump's stroke length by adjusting the air source pressure signal, thus achieving flow regulation. Pneumatic control typically involves a pressure sensor to monitor the pump's outlet pressure and feed the signal back to the controller 300. The controller 300 automatically adjusts the pneumatic signal based on the difference between the set value and the actual value to maintain the required flow and pressure.

[0034] In one embodiment, the filling control module 200 further includes a float level controller 205, which is placed in the target storage tank; the float level controller 205 is used to provide the target storage tank level gauge signal.

[0035] Specifically, the float level controller 205 typically consists of a float, a magnet, a reed switch, and a sensor. When the liquid level in the target storage tank 400 changes, the float moves up and down, causing the internal magnet to move, thereby triggering the reed switch to engage or disengage, generating an electrical signal output. In detail, the float level controller determines the liquid level by detecting changes in the float's position. When the liquid level rises, the float rises, the magnet causes the reed switch to close, and a signal is output; when the liquid level falls, the float falls, the magnet causes the reed switch to disengage, and a signal is output.

[0036] In this embodiment, the float level controller 205 is easy to install and can be applied to different target liquid storage tanks to meet the liquid level monitoring needs of different target liquid storage tanks.

[0037] In one embodiment, a movable carrier is also included, with wheels at its bottom.

[0038] Specifically, the control system of the mobile flow battery filling device also includes a mobile carrier with wheels at the bottom, which can transport the device to the vicinity of the filling site as needed.

[0039] In one embodiment, such as Figure 3 As shown, a control method for a portable flow battery filling device is provided, comprising: S10, obtain the level of the buffer tank and the level of the target storage tank.

[0040] Specifically, the controller first acquires the liquid levels of the buffer tank and the target storage tank. These levels are determined by a level gauge on the buffer tank and a float level controller on the target storage tank. Specifically, the level gauge on the buffer tank monitors the liquid level in real time, and the float level controller detects changes in the liquid level in the target storage tank, transmitting the data to the controller.

[0041] S20: Based on the buffer tank level, a control signal is sent to the filling control module to control the flow rate adjustment of the delivered electrolyte. When the buffer tank level reaches the preset buffer tank position, a control signal is sent to the filling control module to control the stopping of electrolyte delivery into the buffer tank and the target storage tank.

[0042] Specifically, the buffer tank level is monitored in real time by a level gauge on the buffer tank. A sensor on the level gauge converts the level signal into an electrical signal, which is then input to the controller. The controller acquires the buffer tank level and sends a valve control signal to the filling control module to adjust the flow rate of the delivered electrolyte. When the buffer tank level changes, the controller sends a control signal to the filling control module based on the current level information. This signal is used to adjust the electrolyte delivery flow rate to ensure the buffer tank level remains within a set range. When the buffer tank level reaches the preset buffer tank position, the controller sends a signal to the filling control module to stop the electrolyte delivery.

[0043] S30: Based on the liquid level of the target storage tank, a control signal is sent to the filling control module to control the flow rate adjustment of the delivered electrolyte. When the liquid level of the target storage tank reaches the preset storage tank position, a control signal is sent to the filling control module to control the stopping of electrolyte delivery into the target storage tank.

[0044] Specifically, the liquid level in the target storage tank is monitored in real time by a float level controller on the tank. The float level controller converts the liquid level signal into an electrical signal, which is then input to the controller. The controller acquires the liquid level in the target storage tank and sends a control signal to the filling control module to adjust the flow rate of the delivered electrolyte. When the liquid level in the target storage tank changes, the controller sends a control signal to the filling control module based on the current liquid level information. This signal is used to adjust the electrolyte delivery flow rate to ensure that the liquid level in the buffer tank remains within the set range. When the liquid level in the target storage tank reaches the preset storage tank position, the controller sends a control signal to the filling control module to stop the delivery of electrolyte.

[0045] S40: When the target liquid storage tank is full, an alarm signal is issued.

[0046] Specifically, once the device finishes discharging, it will issue an alarm signal to remind the target storage tank that it is full.

[0047] In one embodiment, when the buffer tank level reaches a preset buffer tank position, a control signal is sent to the filling control module to control the cessation of electrolyte delivery into the buffer tank and the target storage tank, including: When the buffer tank level reaches the preset high buffer tank level, a valve control signal is sent to the feed control valve of the filling control module to stop the electrolyte from being delivered into the buffer tank; when the buffer tank level reaches the preset low buffer tank level, a valve control signal is sent to the discharge control valve of the filling control module or a pump control signal is sent to the pump controller to stop the electrolyte from being delivered into the target storage tank.

[0048] Specifically, such as Figure 4 and Figure 5As shown, when the buffer tank level reaches the preset high buffer tank level, the controller sends a valve control signal to the feed control valve of the filling control module to close the feed control valve and stop the electrolyte from being delivered into the buffer tank; when the buffer tank level reaches the preset low buffer tank level, the controller sends a valve control signal to the discharge control valve of the filling control module or a pump control signal to the pump controller to close the discharge control valve or stop the delivery pump and stop the electrolyte from being delivered into the target storage tank.

[0049] In one embodiment, when the liquid level in the target storage tank reaches a preset storage tank position, sending a control signal to the filling control module to control the cessation of electrolyte delivery into the target storage tank includes: When the liquid level in the target storage tank reaches the preset high liquid level position, a valve control signal is sent to the discharge control valve of the filling control module or a pump control signal is sent to the pump controller to control the stop of electrolyte delivery into the target storage tank.

[0050] Specifically, such as Figure 5 As shown, when the liquid level in the target storage tank reaches the preset high liquid level position, the controller sends a valve control signal to the discharge control valve of the filling control module or a pump control signal to the pump controller to control the discharge control valve to close or control the delivery pump to stop the electrolyte from being delivered into the target storage tank.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A control system for a portable flow battery filling device, characterized in that, include: Buffer tank, filling control module and controller; The buffer tank is used to receive incoming materials through multiple feed ports; The infusion control module is located on the buffer tank, the connecting pipe between the buffer tank and the target liquid storage tank, and the target liquid storage tank. It is used to receive the control signal from the controller and control the electrolyte delivery. The controller is used to receive the flow meter signal on the pipeline and the liquid level gauge signal of the target liquid storage tank, calculate the electrolyte volume flowing into the target liquid storage tank, and send control signals to the buffer tank and the filling control module according to the electrolyte volume flowing into the target liquid storage tank and the target liquid storage tank capacity, so as to adjust the filling speed of the electrolyte in segments proportionally.

2. The control system for a portable flow battery filling device according to claim 1, characterized in that, The infusion control module also includes a feed control valve and a discharge control valve. The feed control valve and the discharge control valve are used to adjust the flow rate of the electrolyte during the electrolyte delivery process according to the valve control signal sent by the controller. When the electrolyte level reaches the preset buffer tank position or the preset storage tank position, the delivery of the electrolyte is stopped.

3. The control system for a portable flow battery filling device according to claim 1, characterized in that, The infusion control module also includes a delivery pump, which is a variable frequency pump used to deliver the electrolyte to the target storage tank.

4. The control system for a portable flow battery filling device according to claim 3, characterized in that, The infusion control module also includes a pump controller, which is used to adjust the speed of the delivery pump according to the pump control signal sent by the controller during the electrolyte transportation process, when the electrolyte level reaches a preset position, so as to control the flow rate of the delivered electrolyte.

5. The control system for a portable flow battery filling device according to claim 4, characterized in that, The pump controller adjusts the flow rate of the delivery pump by controlling the motor speed, or by adjusting the flow rate of the delivery pump through pneumatic control.

6. The control system for a portable flow battery filling device according to claim 1, characterized in that, The infusion control module also includes a float level controller, which is placed in the target storage tank; The float level controller is used to provide the level gauge signal of the target storage tank.

7. The control system for a portable flow battery filling device according to claim 1, characterized in that, It also includes a movable carrier, which has wheels at its bottom.

8. A control method for a portable flow battery filling device, characterized in that, include: The liquid levels of the buffer tank and the target storage tank are obtained by means of a level gauge on the buffer tank and a float level controller on the target storage tank, respectively. Based on the level of the buffer tank, a control signal is sent to the filling control module to control the flow rate adjustment of the delivered electrolyte. When the level of the buffer tank reaches the preset buffer tank position, a control signal is sent to the filling control module to control the stopping of the delivery of the electrolyte into the buffer tank and the target storage tank. Based on the liquid level of the target storage tank, a control signal is sent to the filling control module to control the flow rate adjustment of the delivered electrolyte. When the liquid level of the target storage tank reaches the preset storage tank position, a control signal is sent to the filling control module to control the stopping of the delivery of electrolyte into the target storage tank. An alarm signal is issued when the target liquid storage tank is full.

9. The control method for a portable flow battery filling device according to claim 8, characterized in that, The step of sending a control signal to the filling control module when the liquid level in the buffer tank reaches a preset buffer tank position, thereby controlling the stop of the electrolyte delivery into the buffer tank and the target storage tank, includes: When the liquid level in the buffer tank reaches the preset high level position, a valve control signal is sent to the feed control valve of the filling control module to control the stop of the electrolyte being delivered into the buffer tank. When the liquid level in the buffer tank reaches the preset low level position, a valve control signal is sent to the discharge control valve of the filling control module or a pump control signal is sent to the pump controller to control the stop of the electrolyte being delivered into the target storage tank.

10. The control method for a portable flow battery filling device according to claim 8, characterized in that, The step of sending a control signal to the filling control module when the liquid level in the target storage tank reaches a preset storage tank position, thereby controlling the cessation of electrolyte delivery into the target storage tank, includes: When the liquid level in the target storage tank reaches the preset high liquid level position, a valve control signal is sent to the discharge control valve of the filling control module or a pump control signal is sent to the pump controller to control the stopping of the electrolyte delivery into the target storage tank.

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