A reversible, extremely long-life electrolysis module and its control method

Abstract

This invention discloses a reversible, long-life electrolysis module and its control method. Multiple first electrodes are connected to terminal B, multiple second electrodes are connected to terminal W, and multiple third electrodes are connected to terminal A. Terminal B is connected to the first switching terminal of relay KM3, and the second switching terminal of relay KM3 is connected to the positive terminal of the main electrolysis power supply. Terminal W is connected to the first switching terminals of relays KM2 and KM1. The second switching terminal of relay KM2 is connected to the first switching terminal of relay KM3, and the second switching terminal of relay KM1 is connected to the negative terminal of the main electrolysis power supply. Terminal B is connected to the first switching terminals of relays KM4 and KM5, and the second switching terminal of relay KM4 is connected to the negative terminal of the main electrolysis power supply. The second switching terminal of relay KM5 is connected to the positive terminal of the main electrolysis power supply. This invention features non-degradable electrode lifespan, low control difficulty, improved industrial adaptability, and cost savings.

Description

Technical Field

[0001] This invention relates to electrolysis modules, and more particularly to a reversible, long-life electrolysis module and its control method. Background Technology

[0002] Reverse polarity cleaning technology involves periodically switching the polarity (positive and negative) of the electrodes, such as... Figure 1 As shown, this method utilizes electrochemical principles to remove calcium and magnesium ion deposits from electrode surfaces online. Its core lies in altering the pH value of the electrode surface through polarity reversal. During normal operation, the area near the cathode (negative electrode) becomes alkaline due to the generation of OH⁻ from water electrolysis, leading to the formation of calcium and magnesium ion deposits such as Ca²⁺ and Mg²⁺. After reversal, the original cathode becomes the anode, and an oxidation reaction occurs on the surface, generating H⁺. The acidic environment dissolves and removes alkaline scale such as calcium carbonate. Simultaneously, the precipitated bubbles can also physically peel off the scale layer. Currently, this technology is widely used in electrochemical fields to address issues related to electrode polarization, electrode lifespan, water quality adaptability, and stability in electrochemical applications. However, its main drawbacks in practical applications include:

[0003] Electrode lifespan is significantly reduced: Traditional reverse polarity cleaning frequently switches polarity, accelerating the aging and peeling of the electrode coating, and the lifespan drops sharply from ≥8000h to ≤480h;

[0004] The operating parameters are stringent: the current density and time need to be precisely controlled. Improper parameters can easily lead to scale re-dissolution, secondary hardening of water, or electrode corrosion.

[0005] Process operation risks: Short-term fluctuations in effluent quality during polarity switching require additional valves or buffer devices, increasing system complexity;

[0006] High investment and maintenance costs: It requires a dedicated commutation power supply, automatic control system and electrodes, resulting in high initial investment and increased cost of electrode replacement. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a long-life electrolysis module with non-degradable electrode life, low control difficulty, improved industrial adaptability, and cost-saving control, addressing the shortcomings of the prior art.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0009] A reversible, long-life electrolysis module includes multiple first electrodes arranged side-by-side. The gaps formed by the multiple first electrodes are sequentially designated as odd-numbered electrode positions and even-numbered electrode positions. Second electrodes are located at the odd-numbered electrode positions, and third electrodes are located at the even-numbered electrode positions. All first electrodes are connected to a slot terminal B, all second electrodes are connected to a slot terminal W, and all third electrodes are connected to a slot terminal A. Slot terminal B is connected to a first switching terminal of relay KM3, and the second switching terminal of relay KM3 is connected to the positive terminal of the main electrolysis power supply. Slot terminal W is connected to the first switching terminals of relays KM2 and KM1, and the second switching terminal of relay KM2 is connected to the positive terminal of the main electrolysis power supply. The first switching terminal of relay KM3 and the second switching terminal of relay KM1 are connected to the negative terminal of the main electrolytic power supply. The slot terminal B is connected to the first switching terminal of relay KM4 and the first switching terminal of relay KM5. The second switching terminal of relay KM4 is connected to the negative terminal of the main electrolytic power supply, and the second switching terminal of relay KM5 is connected to the positive terminal of the main electrolytic power supply. The coils of relay KM1, relay KM2, relay KM3, relay KM4, and relay KM5 are respectively connected to the controller through switch contacts K1, K2, K3, K4, and K5.

[0010] Preferably, the first electrode, the second electrode, and the third electrode are all plate-type porous structure or mesh structure electrodes.

[0011] Preferably, the controller is a PLC controller.

[0012] Preferably, the multiple first electrodes are distributed at equal intervals.

[0013] A control method for a reversible long-life electrolysis module is disclosed. This method is based on the aforementioned reversible long-life electrolysis module and includes a normal operation mode and a maintenance operation mode. The normal operation mode includes: Step S10, using the controller to close switch contact K2, energizing relay KM2, controlling switch contact K3 to close, energizing relay KM3, controlling switch contact K4 to close, energizing relay KM4. At this time, slot terminals A and W are connected to the positive terminal of the main electrolysis power supply, and slot terminal B is connected to the negative terminal of the main electrolysis power supply, and the electrolysis module is powered on and starts operating; Step S11, when switch contact K2 is closed for a set operating time N, it opens, relay KM2 is de-energized and disconnected, and slot terminal W stops receiving power; Step S12, after the electrolysis module continues to receive power from slot terminals A and B for an operating time M, the controller controls... The control switches K3 and K4 are simultaneously disconnected, relays KM3 and KM4 are de-energized and disconnected, and the power supply to slot terminals A and B is stopped, thus powering down the electrolysis module and ending the normal operation mode. The maintenance operation mode includes: Step S20, the controller controls switch K1 to close, relay KM1 to be energized and engaged, controls switch K5 to close, and relay KM5 to be energized and engaged. At this time, slot terminal B is connected to the positive terminal of the main electrolysis power supply, and slot terminal W is connected to the negative terminal of the main electrolysis power supply. The electrolysis module is powered on and maintenance operation is started. Step S21, after the maintenance operation time reaches the set time D, the controller controls switch K1 to open, relay KM1 to be de-energized and disconnected, controls switch K5 to open, and relay KM5 to be de-energized and disconnected. The power supply to slot terminals B and W is stopped, the electrolysis module is powered down, and the single maintenance operation mode ends.

[0014] Preferably, in step S10, the delay time after the controller controls the switch contact K2 to close is 30s to 60min.

[0015] Preferably, in step S10, the delay time after the controller controls the switch contact K2 to close can be adjusted in the background to 30s~60min.

[0016] Preferably, in the maintenance operation mode, when the electrolysis module is powered off in the normal operation mode, the system automatically triggers the maintenance program and executes step S20.

[0017] The electrolysis module disclosed in this invention can execute a normal operation mode and a maintenance operation mode according to the settings during operation. In the normal operation mode, the controller first controls the switch contact K2 to close, the relay KM2 to be energized and engaged, controls the switch contact K3 to close, the relay KM3 to be energized and engaged, controls the switch contact K4 to close, and the relay KM4 to be energized and engaged. At this time, the slot terminals A and W are connected to the positive terminal of the main electrolysis power supply, and the slot terminal B is connected to the negative terminal of the main electrolysis power supply, and the electrolysis module is powered on and starts running. When the switch contact K2 is closed for a set running time N, it opens, the relay KM2 is de-energized and disconnected, and the slot terminal W stops supplying power. After the electrolysis module continues to supply power to the slot terminals A and B for a running time M, the controller controls the switch contact K3 and the switch contact K4 to close. When contact K4 is simultaneously disconnected, relays KM3 and KM4 are de-energized and disconnected, supply to slot terminals A and B stops, the electrolysis module is powered down, and the normal operation mode ends. In the maintenance operation mode, the controller controls switch contact K1 to close, relay KM1 is energized and engaged, and controls switch contact K5 to close, relay KM5 is energized and engaged. At this time, slot terminal B is connected to the positive terminal of the main electrolysis power supply, and slot terminal W is connected to the negative terminal of the main electrolysis power supply. The electrolysis module is powered on and maintenance operation begins. After the maintenance operation time reaches the set time D, the controller controls switch contact K1 to open, relay KM1 is de-energized and disconnected, controls switch contact K5 to open, relay KM5 is de-energized and disconnected, supply to slot terminals B and W stops, the electrolysis module is powered down, and the single maintenance operation mode ends. Based on the above structural principles, this invention fundamentally avoids coating peeling from the main electrode caused by frequent electrode reversal, maintaining the electrode's original long lifespan and preventing lifespan degradation. Simultaneously, this invention achieves automated online descaling, thorough cleaning, adaptability to complex water quality with high hardness, and stable system operation, retaining all the advantages of electrode reversal. Secondly, this invention eliminates the need for stringent and precise control of electrode reversal parameters, reducing the risk of scale back dissolution and electrode corrosion, and lowering control difficulty. Furthermore, this invention avoids short-term fluctuations in effluent water quality, eliminates the need for buffer / valve switching devices, and is suitable for long-term continuous operation, improving industrial adaptability. In addition, this invention reduces electrode replacement costs and system complexity, lowering initial investment and subsequent maintenance expenses. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the reverse polarity cleaning technology.

[0019] Figure 2 This is a schematic diagram of the structure of the first electrode, the second electrode, and the third electrode;

[0020] Figure 3 The circuit diagrams for each relay in the electrolysis module are shown.

[0021] Figure 4 This is a schematic diagram of the controller and its peripheral circuits. Detailed Implementation

[0022] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0023] This invention discloses a reversible, long-life electrolysis module, combined with Figures 2 to 4 As shown, it includes multiple first electrodes 1 arranged side by side. The gaps formed by the multiple first electrodes 1 are sequentially referred to as odd electrode positions 2 and even electrode positions 3. The odd electrode positions 2 are provided with second electrodes 4, and the even electrode positions 3 are provided with third electrodes 5. The multiple first electrodes 1 are all connected to the slot terminal B, the multiple second electrodes 4 are all connected to the slot terminal W, and the multiple third electrodes 5 are all connected to the slot terminal A.

[0024] The slot terminal B is connected to the first switching terminal of relay KM3, and the second switching terminal of relay KM3 is connected to the positive terminal of the main electrolysis power supply. The slot terminal W is connected to the first switching terminals of relay KM2 and relay KM1. The second switching terminal of relay KM2 is connected to the first switching terminal of relay KM3. The second switching terminal of relay KM1 is connected to the negative terminal of the main electrolysis power supply. The slot terminal B is connected to the first switching terminals of relay KM4 and relay KM5. The second switching terminal of relay KM4 is connected to the negative terminal of the main electrolysis power supply. The second switching terminal of relay KM5 is connected to the positive terminal of the main electrolysis power supply.

[0025] The coils of relays KM1, KM2, KM3, KM4, and KM5 are respectively connected to the controller via switch contacts K1, K2, K3, K4, and K5.

[0026] During operation, the electrolysis module can execute a normal operation mode and a maintenance operation mode according to the settings. In the normal operation mode, the controller first controls the switch contact K2 to close, energizing the relay KM2, which in turn controls the switch contact K3 to close. The relay KM3 then energizes the switch contact K4 to close, energizing the relay KM4. At this time, terminal A and terminal W are connected to the positive terminal of the main electrolysis power supply, and terminal B is connected to the negative terminal. The electrolysis module is powered on and starts operating. When the switch contact K2 closes for a set operating time N, it opens, the relay KM2 de-energizes, and terminal W stops supplying power. After the electrolysis module continues to supply power to terminal A and terminal B for an operating time M, the controller controls the switch contact K3 and terminal W to close. When contact K4 is simultaneously disconnected, relays KM3 and KM4 are de-energized and disconnected, power supply to slot terminals A and B stops, the electrolysis module is powered down, and the normal operation mode ends. In the maintenance operation mode, the controller controls switch contact K1 to close, relay KM1 is energized and engaged, and controls switch contact K5 to close, relay KM5 is energized and engaged. At this time, slot terminal B is connected to the positive terminal of the main electrolysis power supply, and slot terminal W is connected to the negative terminal of the main electrolysis power supply. The electrolysis module is powered on and maintenance operation begins. After the maintenance operation time reaches the set time D, the controller controls switch contact K1 to open, relay KM1 is de-energized and disconnected, controls switch contact K5 to open, relay KM5 is de-energized and disconnected, power supply to slot terminals B and W stops, the electrolysis module is powered down, and the single maintenance operation mode ends. Based on the above structural principles, this invention fundamentally avoids coating peeling from the main electrode caused by frequent electrode reversal, maintaining the electrode's original long lifespan (≥8000h) without any degradation in electrode lifespan. Simultaneously, this invention achieves automated online descaling, thorough cleaning, adaptability to complex water quality with high hardness, and stable system operation, retaining all the advantages of electrode reversal. Secondly, this invention eliminates the need for stringent and precise control of electrode reversal parameters, reducing the risk of scale back dissolution and electrode corrosion, and lowering control difficulty. Furthermore, this invention avoids short-term fluctuations in effluent water quality, eliminates the need for buffer / valve switching devices, and is suitable for long-term continuous operation, improving industrial adaptability. In addition, this invention reduces electrode replacement costs and system complexity, lowering initial investment and subsequent maintenance expenses.

[0027] As a preferred embodiment, the first electrode 1, the second electrode 4, and the third electrode 5 are all plate-type porous or mesh-structured electrodes. Please refer to [link / reference]. Figure 1 Multiple first electrodes 1 are evenly spaced. The invention employs a special electrode structure design that is beneficial to system operation: the electrodes adopt a plate-type porous structure or a mesh structure, which allows for better all-round maintenance and cleaning of the electrodes during the electrolytic maintenance operation process, making the cleaning more comprehensive and efficient.

[0028] In this embodiment, the controller is a PLC controller. The PLC controller has a built-in PLC control program.

[0029] Based on this, the present invention proposes a control method for a reversible, long-life electrolysis module, combined with... Figures 2 to 4 As shown, this method is based on the reversible, long-life electrolytic module described above, and the method includes a normal operation mode and a maintenance operation mode.

[0030] The normal operating modes include:

[0031] Step S10: Using the controller, switch contact K2 is closed, relay KM2 is energized and engaged, switch contact K3 is closed, relay KM3 is energized and engaged, switch contact K4 is closed, relay KM4 is energized and engaged. At this time, slot terminal A and slot terminal W are connected to the positive terminal of the main electrolysis power supply, and slot terminal B is connected to the negative terminal of the main electrolysis power supply. The electrolysis module is powered on and starts running.

[0032] Step S11: When the switch contact K2 is closed for a set running time N, it opens, the relay KM2 is de-energized and disconnected, and the slot terminal W stops supplying power.

[0033] Step S12: After the electrolysis module continues to be powered on by the slot terminals A and B for a running time M, the controller controls the switch contacts K3 and K4 to open synchronously, the relays KM3 and KM4 are de-energized and disconnected, the slot terminals A and B stop being powered on, the electrolysis module is powered off, and the normal operation mode ends.

[0034] The maintenance and operation modes include:

[0035] In step S20, the controller controls the switch contact K1 to close, the relay KM1 to be energized and engaged, and controls the switch contact K5 to close, the relay KM5 to be energized and engaged. At this time, the slot terminal B is connected to the positive terminal of the main electrolysis power supply, and the slot terminal W is connected to the negative terminal of the main electrolysis power supply. The electrolysis module is powered on and started for maintenance operation.

[0036] Step S21: After the maintenance operation time reaches the set time D, control the switch contact K1 to open, the relay KM1 to de-energize and open, control the switch contact K5 to open, the relay KM5 to de-energize and open, the slot terminal B and the slot terminal W to stop supplying power, the electrolysis module to power off, and the single maintenance operation mode ends.

[0037] In step S10 above, the delay time after the controller controls the switch contact K2 to close is 30s~60min. Furthermore, in step S10, the delay time after the controller controls the switch contact K2 to close can be adjusted to 30s~60min in the background.

[0038] Furthermore, in the maintenance operation mode, when the electrolysis module is powered off in the normal operation mode, the system automatically triggers the maintenance program and executes step S20.

[0039] In the above method, for the normal operation of a single module: Clicking the start button on the control panel closes the K2 contact in the PLC program, which then energizes and engages the relay KM2; subsequently, the K3 contact closes, which then energizes and engages the relay KM3; then the K4 contact closes, which then energizes and engages the relay KM4, energizing the slot terminals A(+), B(-), and W(+), and the electrolytic module is powered on and starts running; the delay time of the K2 contact can be adjusted in the background within the range of 30s to 60min. After reaching the set running time N (e.g., 2min) of K2, the K2 contact opens, which then de-energizes and disconnects the relay KM2, de-energizing the slot terminal W(+); the electrolytic module continues to run for M minutes (e.g., 5min) while maintaining the energized state of A(+) and B(-), then the K3 contact opens, which then de-energizes and disconnects the relay KM3, and simultaneously the K4 contact opens, which then de-energizes and disconnects the relay KM4, de-energizing the slot terminals A(+) and B(-), and the electrolytic module is powered off and stops running. For the single-module maintenance operation process: After the electrolysis module completes normal operation and is powered off, the electrolysis system automatically starts the maintenance program; in the PLC program, contact K1 closes, then relay KM1 is energized and engaged, then contact K5 closes, then relay KM5 is energized and engaged, the cell terminals B(+) and W(-) are energized, and the electrolysis module is powered on and starts maintenance operation; after the maintenance operation time reaches the set value D minutes (e.g., 6 minutes), contact K1 opens, then relay KM1 is de-energized and disconnected, at the same time contact K5 opens, then relay KM5 is de-energized and disconnected, the cell terminals B(+) and W(-) are de-energized, and the electrolysis module is powered off and maintenance operation stops.

[0040] When multiple modules are involved in cyclic operation, after the second to Nth electrolytic modules complete a single maintenance operation and are powered off, the electrolysis system automatically triggers the normal operation program, and all modules synchronously enter the normal operation cycle as described above. When multiple modules are involved in cyclic maintenance, after the second to Nth electrolytic modules complete a single normal operation and are powered off, the electrolysis system automatically triggers the maintenance program, and all modules synchronously enter the maintenance operation cycle as described above.

[0041] The actual technical effects achieved by the above technical solution are as follows:

[0042] Firstly, to address the issue of significant electrode lifespan degradation, this invention employs a separate polarity reversal maintenance mechanism for the working electrode and maintenance electrode. This decouples the electrolysis process from the online electrode cleaning process. During normal electrolysis, the main electrode maintains a fixed polarity and does not participate in polarity reversal, while only the maintenance electrode performs the polarity reversal cleaning action. This fundamentally prevents the main electrode coating from aging and peeling due to frequent polarity switching. Simultaneously, the use of plate-type porous or mesh-structured electrodes improves the uniformity of polarity reversal cleaning and reduces localized electrode corrosion and coating stress damage. Combined with a segmented timing control program, the polarity reversal action is limited to the maintenance phase, effectively protecting the electrode body and maintaining the electrode lifespan at the original design lifespan level.

[0043] Secondly, addressing the challenges posed by stringent operating parameters and the potential for scale re-dissolution, secondary water hardening, and electrode corrosion, this invention employs a PLC programmable logic controller for timed segmented control. The system presets the normal electrolysis runtime and the maintenance reversal time, automatically switching between operating and maintenance states according to a fixed sequence, eliminating the need for manual, precise adjustment of current density and reversal timing. Independent power supply circuits are set up to control normal electrolysis and maintenance cleaning separately, preventing interference between operating and maintenance parameters. The maintenance program automatically starts and stops, preventing scale re-dissolution, secondary water hardening, and excessive electrode corrosion caused by improper parameter settings, thus reducing operational difficulty and control precision requirements.

[0044] Furthermore, to address the risks of effluent water quality fluctuations and process interruptions caused by polarity reversal switching, this invention sets the polarity reversal maintenance program to start automatically after the electrolysis module stops, and does not perform polarity switching during normal operation, thus not interfering with the stability of effluent parameters; it adopts a method of cyclical alternation of operation and maintenance of multiple electrolysis modules to ensure continuous water output of the entire system and eliminate short-term water quality fluctuations caused by polarity reversal switching; it eliminates the need for additional valve switching devices or buffer tanks, simplifying the engineering application structure and avoiding process interruptions.

[0045] Furthermore, addressing the issues of high initial investment and high maintenance costs, this invention significantly extends the electrode replacement cycle and reduces replacement costs by protecting the main electrode from attenuation; it achieves maintainable polarity reversal using conventional DC power supply logic, reducing reliance on dedicated high-frequency commutation power supplies and minimizing initial equipment investment; the module adopts a modular and automated design, enabling online maintenance-free operation, reducing manual maintenance costs and spare parts investment, and improving overall economic efficiency.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reversible, extremely long-life electrolytic module, characterized in that, It includes multiple first electrodes (1) arranged side by side, the gaps formed by the multiple first electrodes (1) are successively called odd electrode positions (2) and even electrode positions (3), the odd electrode positions (2) are provided with second electrodes (4), the even electrode positions (3) are provided with third electrodes (5), the multiple first electrodes (1) are all connected to the slot terminal B, the multiple second electrodes (4) are all connected to the slot terminal W, and the multiple third electrodes (5) are all connected to the slot terminal A; The slot terminal B is connected to the first switching terminal of relay KM3, and the second switching terminal of relay KM3 is connected to the positive terminal of the main electrolysis power supply. The slot terminal W is connected to the first switching terminals of relay KM2 and relay KM1. The second switching terminal of relay KM2 is connected to the first switching terminal of relay KM3. The second switching terminal of relay KM1 is connected to the negative terminal of the main electrolysis power supply. The slot terminal B is connected to the first switching terminals of relay KM4 and relay KM5. The second switching terminal of relay KM4 is connected to the negative terminal of the main electrolysis power supply. The second switching terminal of relay KM5 is connected to the positive terminal of the main electrolysis power supply. The coils of relays KM1, KM2, KM3, KM4, and KM5 are respectively connected to the controller via switch contacts K1, K2, K3, K4, and K5.

2. The reversible, long-life electrolytic module as described in claim 1, characterized in that, The first electrode (1), the second electrode (4) and the third electrode (5) are all plate-type porous structure or mesh structure electrodes.

3. The reversible, long-life electrolytic module as described in claim 1, characterized in that, The controller is a PLC controller.

4. The reversible, long-life electrolytic module as described in claim 1, characterized in that, Multiple first electrodes (1) are distributed at equal intervals.

5. A control method for a reversible, long-life electrolysis module, characterized in that, This method is based on the reversible, long-life electrolysis module described in claim 1, and the method includes a normal operation mode and a maintenance operation mode; The normal operating modes include: Step S10: Using the controller, switch contact K2 is closed, relay KM2 is energized and engaged, switch contact K3 is closed, relay KM3 is energized and engaged, switch contact K4 is closed, relay KM4 is energized and engaged. At this time, slot terminal A and slot terminal W are connected to the positive terminal of the main electrolysis power supply, and slot terminal B is connected to the negative terminal of the main electrolysis power supply. The electrolysis module is powered on and starts running. Step S11: When the switch contact K2 is closed for a set running time N, it opens, the relay KM2 is de-energized and disconnected, and the slot terminal W stops supplying power. Step S12: After the electrolysis module continues to be powered on by the slot terminals A and B for a running time M, the controller controls the switch contacts K3 and K4 to open synchronously, the relays KM3 and KM4 are de-energized and disconnected, the slot terminals A and B stop being powered on, the electrolysis module is powered off, and the normal operation mode ends. The maintenance and operation modes include: In step S20, the controller controls the switch contact K1 to close, the relay KM1 to be energized and engaged, and controls the switch contact K5 to close, the relay KM5 to be energized and engaged. At this time, the slot terminal B is connected to the positive terminal of the main electrolysis power supply, and the slot terminal W is connected to the negative terminal of the main electrolysis power supply. The electrolysis module is powered on and started for maintenance operation. Step S21: After the maintenance operation time reaches the set time D, control the switch contact K1 to open, the relay KM1 to de-energize and open, control the switch contact K5 to open, the relay KM5 to de-energize and open, the slot terminal B and the slot terminal W to stop supplying power, the electrolysis module to power off, and the single maintenance operation mode ends.

6. The control method for a reversible, long-life electrolysis module as described in claim 5, characterized in that, In step S10, the delay time after the controller controls the switch contact K2 to close is 30s~60min.

7. The control method for a reversible, long-life electrolysis module as described in claim 5, characterized in that, In step S10, the delay time after the controller controls the switch contact K2 to close can be adjusted in the background to 30s~60min.

8. The control method for a reversible, long-life electrolysis module as described in claim 5, characterized in that, In the maintenance operation mode, when the electrolysis module is powered off in the normal operation mode, the system automatically triggers the maintenance program and executes step S20.

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