Water electrolysis circuit, water electrolysis equipment, control method thereof, and storage medium

Abstract

The present invention discloses a water electrolysis circuit, water electrolysis equipment, control method thereof, and storage medium. The circuit includes: an electrode module for electrolyzing salt water of different concentrations; a controllable DC-DC module for providing an adjustable DC voltage to the electrode module; a current detection module for detecting the operating current of the electrode module; a voltage detection module for detecting the operating voltage of the electrode module; a controller module for determining the initial resistance of the salt water according to the operating current and the operating voltage of the electrode module, and determining the driving mode of the electrode module according to the initial resistance, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, wherein the driving mode includes a constant current driving mode and a constant power driving mode. Thus, the problem of reduced service life of electrodes and electronic controls can be effectively solved, and electrode abnormalities can be judged from both voltage and current aspects.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a water electrolysis circuit, a water electrolysis device, a control method for the water electrolysis device, a computer storage medium and another water electrolysis device. Background Art

[0002] With the advent of the epidemic, more and more disinfection measures have emerged, among which the use of electrolyzed water to produce hypochlorous acid has become a common sterilization method. Electrolyzed water involves placing a pair of electrodes in a solution containing sodium chloride and passing direct current through the electrodes to electrolyze the sodium chloride solution to produce hypochlorous acid, which is a bactericidal agent.

[0003] In the related art, there are two main ways to supply power to the electrodes: constant voltage power supply and constant current power supply. When constant voltage power supply is used, the electrolysis efficiency cannot be controlled, and when the concentration of the sodium chloride solution is low, the electric control power will be too high, the heat generation will be large, and the service life of the electrode and the electric control will be shortened. When constant current power supply is used, when the concentration of the sodium chloride solution is high, the electric control power will be too high, the heat generation will be large, and the service life of the electrode and the electric control will be shortened. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the first purpose of the present invention is to propose a water electrolysis circuit, which determines the initial resistance of the electrolyte solution according to the working voltage and working current of the electrode module, and then determines the corresponding driving mode, and controls the DC-DC module according to the driving mode so that the electrode module operates in the corresponding driving mode, thereby effectively solving the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to constant current power supply, effectively improving the service life of the electrode and the electronic control. At the same time, based on the detected working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0006] The second object of the present invention is to provide a water electrolysis device.

[0007] The third object of the present invention is to provide a control method for water electrolysis equipment.

[0008] A fourth object of the present invention is to provide a computer-readable storage medium.

[0009] A fifth object of the present invention is to provide another water electrolysis device.

[0010] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present invention proposes a water electrolysis circuit, comprising: an electrode module for electrolyzing salt water of different concentrations; a controllable DC-DC module, the controllable DC-DC module being connected to the electrode module to provide an adjustable DC voltage to the electrode module; a current detection module, the current detection module being connected to the electrode module to detect the working current of the electrode module; a voltage detection module, the voltage detection module being connected to the electrode module to detect the working voltage of the electrode module; a controller module, the controller module being connected to the controllable DC-DC module, the current detection module and the voltage detection module respectively, the controller module determining the initial resistance of the salt water according to the working current and the working voltage of the electrode module, and determining the driving mode of the electrode module according to the initial resistance, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in the corresponding driving mode, wherein the driving mode includes a constant current driving mode and a constant power driving mode.

[0011] According to the water electrolysis circuit of the embodiment of the present invention, the working current of the electrode module is detected by the current detection module, and the working voltage of the electrode module is detected by the voltage detection module. The controller module determines the initial resistance of the brine according to the working current and working voltage of the electrode module, and then determines the driving mode of the electrode module, and controls the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, such as a constant current driving mode or a constant power driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to the use of constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to the use of constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the detected working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0012] In addition, the water electrolysis circuit according to the above embodiment of the present invention may also have the following additional technical features:

[0013] Optionally, according to one embodiment of the present invention, a short-circuit protection module is respectively connected to the electrode module, the controllable DC-DC module and the controller module, wherein the short-circuit protection module controls the controllable DC-DC module to directly shut down the DC voltage output when detecting that a short circuit occurs in the electrode module, and outputs a short-circuit protection signal to the controller module at the same time, and the controller module controls the controllable DC-DC module to maintain the output shutdown state according to the short-circuit protection signal.

[0014] Optionally, according to one embodiment of the present invention, the short-circuit protection module includes: a first resistor, one end of the first resistor is connected to the electrode module; a second resistor, one end of the second resistor is connected to the other end of the first resistor and has a first node, and the other end of the second resistor is connected to a reference power supply; a third resistor, one end of the third resistor is connected to the reference power supply; a fourth resistor, one end of the fourth resistor is connected to the other end of the third resistor and has a second node, and the other end of the fourth resistor is grounded; a first comparator, the positive input end of the first comparator is connected to the second node, the negative input end of the first comparator is connected to the first node, and the output end of the first comparator is connected to the controllable DC-DC module; a second comparator, the positive input end of the second comparator is connected to the second node, the negative input end of the second comparator is connected to the first node, and the output end of the second comparator is connected to the controller module.

[0015] Optionally, according to one embodiment of the present invention, the current detection module includes: a current-sensing resistor, one end of the current-sensing resistor is connected to the electrode module, and the other end of the current-sensing resistor is grounded; a fifth resistor, one end of the fifth resistor is connected to one end of the current-sensing resistor; a first capacitor, one end of the first capacitor is connected to the other end of the fifth resistor, and the other end of the first capacitor is grounded; a sixth resistor, one end of the sixth resistor is connected to the other end of the current-sensing resistor; a first amplifier, the positive input end of the first amplifier is connected to the other end of the fifth resistor, the negative input end of the first amplifier is connected to the other end of the sixth resistor, and the output end of the first amplifier is connected to the controller module; a seventh resistor, the seventh resistor is connected between the negative input end and the output end of the first amplifier.

[0016] Optionally, according to one embodiment of the present invention, the controllable DC-DC module includes: a DC / DC chip, an output pin of the DC / DC chip is connected to the output end of the controllable DC-DC module, an input pin of the DC / DC chip is connected to the power supply, an enable pin of the DC / DC chip is connected to the short-circuit protection module, and a voltage adjustment pin of the DC / DC chip is connected to the output voltage control end of the controller module; an eighth resistor, one end of the eighth resistor is connected to the enable pin of the DC / DC chip, and the other end of the eighth resistor is connected to the protection control end of the controller module; a parallel diode, an anode of the parallel diode is connected to one end of the eighth resistor, and a cathode of the parallel diode is connected to the other end of the eighth resistor.

[0017] Optionally, according to one embodiment of the present invention, the controllable DC-DC module further includes: a ninth resistor, one end of the ninth resistor being connected to the output end of the controllable DC-DC module; a tenth resistor, one end of the tenth resistor being connected to the other end of the ninth resistor and having a third node, the other end of the tenth resistor being grounded, and the third node being connected to the voltage adjustment pin of the DC / DC chip.

[0018] Optionally, according to one embodiment of the present invention, the voltage detection module includes: an eleventh resistor, one end of the eleventh resistor is connected to the power supply end of the electrode module; a twelfth resistor, one end of the twelfth resistor is connected to the other end of the eleventh resistor and has a fourth node, the other end of the twelfth resistor is grounded, and the fourth node is connected to the controller module; a second capacitor, the second capacitor is connected in parallel with the twelfth resistor.

[0019] To achieve the above-mentioned purpose, a second embodiment of the present invention provides a water electrolysis device, which includes the above-mentioned water electrolysis circuit.

[0020] According to the water electrolysis equipment provided by this embodiment, the water electrolysis circuit described in the above embodiment is used to determine the initial resistance of the electrolyte solution according to the working voltage and working current of the electrode module, and then determine the corresponding driving mode, and control the DC-DC module according to the driving mode so that the electrode module operates in the corresponding driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the detected working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0021] To achieve the above-mentioned purpose, the third embodiment of the present invention proposes a control method for water electrolysis equipment, which includes: obtaining the working current of the electrode module and obtaining the working voltage of the electrode module; determining the initial resistance of the brine according to the working current of the electrode module and the working voltage of the electrode module; determining the driving mode of the electrode module according to the initial resistance, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, wherein the driving mode includes a constant current driving mode and a constant power driving mode.

[0022] According to the control method of the water electrolysis equipment of an embodiment of the present invention, the working current and working voltage of the electrode module are obtained, and the initial resistance of the brine is determined according to the working current and working voltage of the electrode module, thereby determining the driving mode of the electrode module, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, such as a constant current driving mode or a constant power driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to the use of constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to the use of constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the obtained working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0023] In addition, the control method of the water electrolysis equipment according to the above embodiment of the present invention may also have the following additional technical features:

[0024] Optionally, according to one embodiment of the present invention, the driving mode of the electrode module is determined based on the initial resistance value, including: judging whether the initial resistance value is in a preset constant current working resistance range; if so, determining that the driving mode of the electrode module is a constant current driving mode; if not, determining that the driving mode of the electrode module is a constant power driving mode.

[0025] Optionally, according to one embodiment of the present invention, controlling the controllable DC-DC module to adjust the output DC voltage includes: when the driving mode of the electrode module is a constant current driving mode, adjusting the DC voltage output by the controllable DC-DC module according to the working current of the electrode module, so that the working current of the electrode module is in a preset current range; when the driving mode of the electrode module is a constant power driving mode, determining the operating power of the electrode module according to the working current of the electrode module and the working voltage of the electrode module, and adjusting the DC voltage output by the controllable DC-DC module according to the operating power, so that the operating power is in a preset power range.

[0026] To achieve the above objectives, the fourth embodiment of the present invention proposes a computer-readable storage medium on which a control program for a water electrolysis device is stored. When the control program for the water electrolysis device is executed by a processor, the control method for the water electrolysis device of the above embodiment is implemented.

[0027] According to the computer-readable storage medium provided by an embodiment of the present invention, when the control program of the stored water electrolysis equipment is executed, the working current and working voltage of the electrode module are obtained, and the initial resistance of the brine is determined based on the working current and working voltage of the electrode module, and then the driving mode of the electrode module is determined, and the controllable DC-DC module is controlled to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, such as a constant current driving mode or a constant power driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to the use of constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to the use of constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the obtained working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0028] To achieve the above-mentioned objectives, the fifth embodiment of the present invention proposes a water electrolysis device, including a memory, a processor, and a control program for the water electrolysis device stored in the memory and runnable on the processor. When the processor executes the control program of the water electrolysis device, the control method of the water electrolysis device of the above-mentioned embodiment is implemented.

[0029] According to the water electrolysis equipment of an embodiment of the present invention, when the processor executes the control program of the water electrolysis equipment, it obtains the working current and working voltage of the electrode module, and determines the initial resistance of the brine based on the working current and working voltage of the electrode module, thereby determining the driving mode of the electrode module, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, such as a constant current driving mode or a constant power driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to the use of constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to the use of constant current power supply. This effectively improves the service life of the electrode and the electronic control. At the same time, based on the obtained working voltage and working current of the electrode module, it can realize the judgment of electrode abnormality from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 A block diagram of a water electrolysis circuit according to one embodiment of the present invention;

[0032] Figure 2 A block diagram of a water electrolysis circuit according to another embodiment of the present invention;

[0033] Figure 3 Schematic diagram of an electronic circuit of a water electrolysis circuit according to one embodiment of the present invention;

[0034] Figure 4 A block diagram of a water electrolysis device according to one embodiment of the present invention;

[0035] Figure 5 This is a flow chart of a control method for a water electrolysis device according to one embodiment of the present invention;

[0036] Figure 6 This is a flow chart of a control method for a water electrolysis device according to a specific embodiment of the present invention;

[0037] Figure 7 This is a flow chart of a control method for a water electrolysis device based on a constant current driving mode according to a specific embodiment of the present invention;

[0038] Figure 8 This is a flow chart of a control method for a water electrolysis device based on a constant power driving mode according to a specific embodiment of the present invention;

[0039] Figure 9 FIG. 4 is a block diagram of a water electrolysis device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0041] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0042] Figure 1 FIG. 1 is a block diagram of a water electrolysis circuit according to an embodiment of the present invention. Figure 1 As shown, the water electrolysis circuit may include: an electrode module 10 , a controllable DC-DC module 20 (hereinafter abbreviated as DCDC module 20 ), a current detection module 30 , a voltage detection module 40 and a controller module 50 .

[0043] Among them, the electrode module 10 is used to electrolyze salt water (i.e., sodium chloride solution) of different concentrations; the DCDC module 20 is connected to the electrode module 10 to provide an adjustable DC voltage to the electrode module 10; the current detection module 30 is connected to the electrode module 10 to detect the working current of the electrode module 10; the voltage detection module 40 is connected to the electrode module 10 to detect the working voltage of the electrode module 10; the controller module 50 is connected to the DCDC module 20, the current detection module 30, and the voltage detection module 40 respectively. The controller module 50 is used to determine the initial resistance of the salt water based on the working current and the working voltage, and determine the driving mode of the electrode module 10 based on the initial resistance, and control the DCDC module 20 to adjust the output DC voltage according to the driving mode so that the electrode module 10 operates in the corresponding driving mode. It should be noted that the driving mode includes a constant current driving mode (i.e., keeping the current constant) and a constant power driving mode (i.e., keeping the power constant).

[0044] Specifically, the electrode module 10 is placed in a container for an electrolyte solution, typically comprising a positive electrode and a negative electrode. By passing a direct current through the two electrodes, the electrolyte solution is electrolyzed to produce the desired substance. For example, the electrode module 10 is placed in a container containing a sodium chloride aqueous solution. By passing a direct current through the electrode module 10, the sodium chloride aqueous solution is electrolyzed to produce hypochlorous acid for sterilization.

[0045] The output end of the DCDC module 20 is connected to the electrode module 10, for example, it can be connected to the positive electrode of the electrode module 10, while the negative electrode of the electrode module 10 is grounded. When a DC voltage is supplied to the positive electrode of the electrode module 10 through the DCDC module 20, the electrode module 10 is powered on and begins to electrolyze the electrolyte solution. The DC voltage output by the DCDC module 20 is adjustable to meet actual electrolysis requirements. When the DCDC module 20 stops supplying the DC voltage to the positive electrode of the electrode module 10, the electrode module 10 stops electrolyzing the electrolyte solution.

[0046] The current detection module 30 can be set corresponding to the negative electrode, and is used to detect the current between the positive electrode and the negative electrode, that is, the working current of the electrode module 10. The voltage detection module 40 can be set corresponding to the positive electrode, and is used to detect the voltage between the positive electrode and the negative electrode to obtain the working voltage of the electrode module 10, so as to control the DCDC module 20 according to the working current and working voltage, so that it outputs a DC voltage that meets the actual electrolysis requirements to the electrode module 10.

[0047] The controller module 50 is connected to the DCDC module 20, the voltage detection module 40 and the current detection module 30 respectively. As the control core of the water electrolysis circuit, it is used to collect the working voltage and the working current, and calculate the initial resistance of the electrode module 10 according to the working voltage and the working current. It should be noted that the initial resistance is negatively correlated with the concentration of the electrolyte solution. The higher the concentration, the smaller the initial resistance, and the lower the concentration, the larger the initial resistance. Therefore, the initial resistance can directly reflect the concentration of the electrolyte solution, and then the driving mode determined based on the initial resistance is matched with the concentration of the electrolyte solution, so that it conforms to the concentration of the electrolyte solution. After obtaining the driving mode, the controller module 50 outputs the corresponding DC voltage by controlling the DCDC module 20 according to the driving mode, so that the electrolysis efficiency of the electrode module 10 can be improved. At the same time, the driving mode is matched with the concentration of the electrolyte solution, which can avoid the reduction of the service life of the positive electrode and negative electrode of the electrode module 10 and the DCDC module 20 caused by the mismatch between the concentration and the driving mode.

[0048] It should be noted that the controller module 50 can determine the corresponding drive mode by comparing the initial resistance value with a preset constant current operating resistance range, wherein when the initial resistance value is within the constant current operating resistance range, it is determined to be the constant current drive mode, and when the initial resistance value is not within the constant current operating resistance range, it is determined to be the constant power drive mode. Furthermore, when in the constant current drive mode, the controller module 50 also adjusts the DC voltage of the DCDC module 20 according to the operating current so that the operating current is within the preset current range, that is, the current during the water electrolysis process remains unchanged; when in the constant power mode, the controller module 50 also calculates the operating power based on the operating voltage and the operating current, and then adjusts the DC voltage of the DCDC module 20 according to the operating power so that the operating power is within the predetermined power range, that is, the power during the water electrolysis process remains unchanged.

[0049] Furthermore, the controller module 50 can also determine whether the electrode module 10 has any abnormalities based on the acquired operating voltage and operating current. For example, when the operating current exceeds a preset current threshold, the positive and negative electrodes of the electrode module 10 may short-circuit, causing an overcurrent abnormality in the electrode module 10. When the operating voltage exceeds a preset voltage threshold, the coating of the positive electrode of the electrode module 10 may be shielded by the electrolyzed substance, causing an overvoltage abnormality in the electrode module 10. This allows the operating status of the electrode module 10 to be reflected from both voltage and current, making electrode monitoring more comprehensive.

[0050] In actual applications, when the controller module 50 receives the electrolysis instruction, it can first control the DCDC module 20 to output a preset DC voltage, and at the same time obtain the working current detected by the current detection module 30, and judge whether the electrode module 10 is abnormal based on the working current. If abnormal, the abnormality processing is performed. Otherwise, the initial resistance of the electrode module 10 is calculated based on the preset DC voltage and the detected working current, and then it is judged whether the initial resistance is within the preset constant current working resistance range. If so, the constant current drive mode is used to control the DCDC module 20, otherwise the constant power drive mode is used to control the DCDC module 20.

[0051] Among them, when the constant current driving mode is adopted to control the DCDC module 20, the controller module 50 determines whether there is any abnormality in the electrode module 10 according to the detected working voltage and working current. If there is an abnormality, the abnormality processing is performed. If there is no abnormality, the DC voltage of the DCDC module 20 is set and the DCDC module 20 is controlled. At the same time, the working current is detected and it is determined whether the current is in a preset current range. If so, the DCDC module 20 is continued to be controlled according to the current DC voltage. Otherwise, the DC voltage of the DCDC module 20 is adjusted so that the working current is in a preset current range. When the constant power mode is adopted to control the DC When the DC module 20 is controlling, the controller module 50 determines whether there is any abnormality in the electrode module 10 based on the detected working voltage and working current. If there is an abnormality, the abnormality processing is performed. If there is no abnormality, the DC voltage of the DCDC module 20 is set and the DCDC module 20 is controlled. At the same time, the working voltage and working current are detected, and the operating power is calculated based on the working voltage and working current, and it is determined whether the power is within a preset power range. If so, the DCDC module 20 continues to be controlled according to the current DC voltage. Otherwise, the DC voltage of the DCDC module 20 is adjusted so that the operating power is within the preset power range.

[0052] In the above embodiment, the initial resistance of the electrolyte solution is determined according to the working voltage and working current of the electrode module, and then the corresponding driving mode is determined, and the DC-DC module is controlled according to the driving mode so that the electrode module operates in the corresponding driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the detected working voltage and working current, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0053] In some embodiments of the present invention, reference Figure 2As shown, the above-mentioned water electrolysis circuit may further include: a short-circuit protection module 60, which is respectively connected to the controller module 50, the electrode module 10 and the DCDC module 20, and is specifically used to control the DCDC module 20 to directly shut down the DC voltage output of the DCDC module 20 when a short circuit occurs in the electrode module 10, and at the same time output a short-circuit protection signal to the controller module 50. The controller module 50 controls the DCDC module 20 to maintain the output off state according to the short-circuit protection signal.

[0054] Specifically, the short-circuit protection module 60 can be set corresponding to the positive electrode to detect the working current, and determine whether the electrode module 10 has a short-circuit abnormality based on the working current. For example, when the working current exceeds the preset current threshold, it is determined that the electrode module 10 has a short-circuit abnormality. At this time, the short-circuit protection module 60 directly controls the DCDC module 20 to stop outputting DC voltage and outputs a short-circuit protection signal to the controller module 50. When the controller module 50 receives the short-circuit protection signal, it controls the DCDC module 20 to keep stopping the output of DC voltage according to the signal, thereby avoiding damage to the DCDC module 20 and the electrode module 10 due to the short-circuit abnormality, thereby achieving safety protection for the water electrolysis equipment. Compared with the method of judging and processing the abnormality of the electrode module 10 based on the detected working voltage and working current by the controller module 50, this method can disconnect the power supply of the electrode module more quickly when an abnormality occurs, thereby achieving timely protection of the water electrolysis equipment. Furthermore, on the basis of providing abnormal and rapid protection to the water electrolysis equipment through the short-circuit protection module 60, the aforementioned controller module 50 is combined to perform abnormal judgment on the electrode module 10 according to the detected working voltage and working current, and the specific abnormal situation can be judged, and then corresponding abnormal processing can be made based on the abnormal situation.

[0055] In the above embodiment, by determining the initial resistance of the electrolyte solution according to the working voltage and working current of the electrode module, and then determining the corresponding driving mode, and controlling the DC-DC module according to the driving mode so that the electrode module operates in the corresponding driving mode, it can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to constant current power supply, and effectively improve the service life of the electrode and the electronic control. At the same time, based on the short-circuit protection module, rapid protection of the water electrolysis equipment can be achieved, and combined with the controller module based on the detected working voltage and working current, the electrode abnormality can be judged from both voltage and current aspects, making the electrode abnormality judgment more comprehensive and able to analyze the abnormality type.

[0056] In some embodiments of the present invention, reference Figure 3As shown, the short circuit protection module 60 may include: a first resistor R1 , a second resistor R2 , a third resistor R3 , a fourth resistor R4 , a first comparator U1 , and a second comparator U2 .

[0057] In this example, one end of the first resistor R1 is connected to the electrode module 10, and optionally, can be connected to the negative electrode of the electrode module 10 through the first inductor L1; the other end of the first resistor R1 is connected to one end of the second resistor R2, and the connection point is used as the first node J1, the other end of the second resistor R2 and one end of the third resistor R3 are respectively connected to the reference power supply VCC; the other end of the third resistor R3 is connected to one end of the fourth resistor R4, and the connection point is used as the second node J2, and the other end of the fourth resistor R4 is grounded; the positive input end of the first comparator U1 and the positive input end of the second comparator U2 are both connected to the second node J2, the negative input end of the first comparator U1 and the negative input end of the second comparator U2 are both connected to the first node J1, the output end of the first comparator U1 is connected to the DCDC module 20; the output end of the second comparator U2 is connected to the controller module 50.

[0058] Specifically, the first resistor R1 and the second resistor R2 constitute a sampling circuit, through which a voltage signal corresponding to the working current is sampled to obtain a sampling value, and the sampling value is input into the negative input end of the two comparators. At the same time, the third resistor R3 and the fourth resistor R4 constitute a voltage divider circuit, through which a preset reference value is provided and input into the positive input end of the two comparators. During the water electrolysis process, when the electrode module 10 does not have a short circuit abnormality, that is, when the working current does not exceed the preset current threshold, the corresponding sampling value will be lower than the preset reference value. At this time, both comparators output high-level signals, wherein the high-level signal output by the first comparator U1 is directly transmitted to the DCDC module 20, and the high-level signal output by the second comparator U2 is directly transmitted to the controller module 50; when a short circuit abnormality occurs in the electrode module 10, that is, when the working current exceeds the preset current threshold, the corresponding sampling value is higher than the preset reference value. At this time, both comparators output low-level signals, wherein the low-level signal output by the first comparator U1 is directly transmitted to the DCDC module 20, so that the DCDC module 20 immediately stops outputting the DC voltage based on the low-level signal for short-circuit protection, and the low-level signal output by the second comparator U2 is directly transmitted to the controller module 50, so that the controller module 50 outputs a protection signal to the DCDC module 20 based on the low-level signal. When the DCDC module 20 receives the protection signal, it maintains the state of stopping outputting the DC voltage.

[0059] Therefore, based on the first comparator, fast short-circuit protection of the electrode module can be achieved, and based on the second comparator, short-circuit protection of the electrode module can also be achieved. The two have redundancy. When one of the comparators fails, the other comparator can still work to provide safety protection for the electrode module, thereby improving the reliability of protection.

[0060] In some embodiments of the present invention, reference Figure 3 As shown, the current detection module 30 may include: a current detection resistor Rs, a fifth resistor R5, a first capacitor C1, a sixth resistor R6, a seventh resistor R7 and a first amplifier P1.

[0061] In this example, one end of the current-sensing resistor Rs is connected to the electrode module 10, and optionally, it can be connected to the negative electrode of the electrode module 10 through the first inductor L1, and the other end of the current-sensing resistor RS is grounded; one end of the fifth resistor R5 is connected to one end of the current-sensing resistor Rs; one end of the sixth resistor R6 is connected to the other end of the current-sensing resistor Rs; one end of the first capacitor C1 is connected to the other end of the fifth resistor R5, and the other end of the first capacitor C1 is grounded; the positive input end of the first amplifier P1 is connected to the other end of the fifth resistor R5, the negative input end of the first amplifier P1 is connected to the other end of the sixth resistor R6, and the output end of the first amplifier P1 is connected to the controller module 50; one end of the seventh resistor R7 is connected to the negative input end of the first amplifier P1, and the other end of the seventh resistor R7 is connected to the output end of the first amplifier P1.

[0062] It should be noted that the current detection module 30 and the short-circuit protection module 60 can share the current detection resistor Rs, and convert the operating current into a corresponding voltage signal through the current detection resistor Rs for sampling.

[0063] Specifically, during the water electrolysis process, a sampling value corresponding to the working current can be obtained by sampling the voltage across the current-sensing resistor Rs. The sampling value is amplified by the first amplifier P1 and input into the controller module 50. At this time, the controller module 50 can calculate the working current based on the amplified sampling value, and then control the DCDC module 20 according to the working current to enable the electrode module 10 to electrolyze water. At the same time, the electrode module 10 is judged to have an electrode abnormality based on the working current to perform safety protection when an electrode abnormality occurs in the electrode module 10.

[0064] For further reference, Figure 3As shown, the current detection module 30 may also include: a third capacitor C3, which is connected in parallel with the current sensing resistor Rs and mainly plays a role in voltage stabilization to avoid voltage fluctuations across the current sensing resistor Rs, which causes frequent jitter in the sampled value of the working current. Optionally, the current detection module 30 may also include: a first clamping diode Z1, wherein the first end of the first clamping diode Z1 is connected to one end of the current sensing resistor Rs, the second end of the first clamping diode Z1 is connected to the reference power supply VCC, and the third end of the first clamping diode Z1 is grounded. The first clamping diode Z1 is used to limit the voltage across the current sensing resistor Rs to a certain range to prevent the voltage across the current sensing resistor Rs from being too high and damaging subsequent circuits. Optionally, the current detection module 30 may also include: a fourth capacitor C4, a fifth capacitor C5 and a thirteenth resistor R13, wherein one end of the thirteenth resistor R13 is connected to the output end of the first amplifier P1, and the other end of the thirteenth resistor R13 is connected to the controller module 50. The fourth capacitor C4 and the fifth capacitor C5 are connected in parallel, and one end after parallel connection is connected to the other end of the thirteenth resistor R13, and the other end after parallel connection is grounded, which is mainly used to filter the voltage signal output by the first amplifier P1 to ensure the stability of the voltage signal.

[0065] In some embodiments of the present invention, reference Figure 3 As shown, the voltage detection module 40 may include: an eleventh resistor R11 , a twelfth resistor R12 and a second capacitor C2 .

[0066] In this example, one end of the eleventh resistor R11 is connected to the power supply end of the electrode module 10, such as the positive electrode; the other end of the eleventh resistor R11 is connected to one end of the twelfth resistor R12, and the connection point is used as the fourth node J4, the other end of the twelfth resistor R12 is grounded, and the fourth node J4 is connected to the controller module 50; the second capacitor C2 and the twelfth resistor R12 are connected in parallel, and the working voltage sampling value is filtered by the second capacitor C2 to make the working voltage sampling value more stable and avoid fluctuations in the working voltage sampling value.

[0067] Specifically, the eleventh resistor R11 and the twelfth resistor R12 constitute a voltage divider sampling circuit, which samples the voltage of the power supply end through the voltage divider sampling circuit to obtain a working voltage sampling value, and transmits the working voltage sampling value to the controller module 50. At this time, the controller module 50 calculates the working voltage of the electrode module 10 based on the sampling value, and then controls the DCDC module 20 according to the working voltage so that the electrode module 10 electrolyzes water. At the same time, the electrode module 10 is judged to have an electrode abnormality based on the working voltage to perform safety protection when an electrode abnormality occurs in the electrode module 10.

[0068] For further reference, Figure 3As shown, the voltage detection module 40 may further include: a second clamping diode Z2, a first end of the second clamping diode Z2 is connected to the fourth node J4, a second end of the second clamping diode Z2 is connected to the reference power supply VCC, and a third end of the second clamping diode Z2 is grounded. The second clamping diode Z2 is used to clamp the working voltage sampling value within a certain range to prevent excessive voltage from damaging subsequent circuits.

[0069] In some embodiments of the present invention, reference Figure 3 As shown, the DCDC module 20 may include: a DC / DC chip U3, an eighth resistor R8, and a parallel diode D1. It should be noted that the parallel diode D1 is obtained by connecting at least two diodes in parallel, and the anodes and cathodes of the at least two diodes are connected respectively.

[0070] In this example, the output pin Lx of the DC / DC chip U3 is connected to the output end of the DCDC module 20, the input pin VIN is connected to the power supply VCC1, the enable pin ROCS is connected to the short-circuit protection module 60, and the voltage adjustment pin VSENSE is connected to the output voltage control end of the controller module 50; one end of the eighth resistor R8 is connected to the enable pin ROCS, and the other end of the eighth resistor R8 is connected to the protection control end of the controller module 50; the anode of the parallel diode D1 is connected to one end of the eighth resistor R8, and the cathode of the parallel diode D1 is connected to the other end of the eighth resistor R8.

[0071] Specifically, during the water electrolysis process, the controller module 50 sends a voltage regulation signal to the voltage regulation pin VSENSE, and the DC / DC chip U3 outputs a corresponding DC voltage to the electrode module 10 according to the voltage regulation signal, so that the electrode module 10 performs water electrolysis. At the same time, the short-circuit protection module 60 detects whether the electrode module 10 is short-circuited. If so, it outputs a short-circuit protection signal to the enable pin ROCS and the controller module 50. The DC / DC chip U3 will immediately stop outputting the DC voltage to the electrode module 10. At the same time, the controller module 50 outputs a voltage regulation signal with a DC voltage of zero to the voltage regulation pin VSENSE, and outputs a protection signal to the enable pin ROCS, so that the DC / DC chip U3 maintains the state of stopping the output of the DC voltage. It is understandable that the controller module 50 can also determine that the electrode module 10 has a short-circuit abnormality based on the operating voltage and operating current, and output a voltage regulation signal with a DC voltage of zero to the voltage regulation pin VSENSE, and output a protection signal to the enable pin ROCS, so that the DC / DC chip U3 stops outputting the DC voltage, thereby being able to provide safety protection for the electrode module from multiple aspects. When the electrode module 10 has no short-circuit abnormality, the controller module 50 directly obtains the corresponding voltage regulation signal based on the working voltage and working current, and outputs it to the voltage regulation pin VSENSE, so that the DC / DC chip U3 outputs the corresponding DC voltage, thereby enabling the electrode module 10 to electrolyze water.

[0072] In some embodiments of the present invention, continue to refer to Figure 3 As shown, the DCDC module 20 may further include a ninth resistor R9 and a tenth resistor R10.

[0073] In this example, one end of the ninth resistor R9 is connected to the output end of the DCDC module 20; one end of the tenth resistor R10 is connected to the other end of the ninth resistor R9, and the connection point is used as the third node J3, the other end of the tenth resistor R10 is grounded, and the third node J3 is connected to the voltage adjustment pin VSENSE of the DC / DC chip U3.

[0074] For further reference, Figure 3 As shown, the DCDC module 20 may also include other peripheral components, such as a seventh capacitor C7, one end of the seventh capacitor C7 is connected to the input pin VIN of the DC / DC chip U3, and the other end is grounded, which plays a role in voltage stabilization; a fourteenth resistor R14 is a grounding resistor, connected between the enable pin ROCS of the DC / DC chip U3 and the ground; a fifteenth resistor R15 is a grounding resistor, connected between the input ground pin SS of the DC / DC chip U3 and the ground; an eighth capacitor C8, the eighth capacitor C8 is connected between the output pin Lx of the DC / DC chip U3 and the bootstrap pin BOOT, which plays a bootstrap role; etc., for specific reference Figure 3 As shown, I will not describe them in detail here.

[0075] In some embodiments of the present invention, reference Figure 3 As shown, the controller module 50 may include: a controller MCU and a second amplifier P2. In this example, the output voltage control terminal of the controller MCU is connected to the positive input terminal of the second amplifier P2, and the negative input terminal and output terminal of the second amplifier P2 are connected to form a voltage follower. The output terminal of the second amplifier P2 is connected to the voltage adjustment pin VSENSE to output a voltage adjustment signal to the DC / DC chip U3, so that the DC / DC chip U3 outputs a corresponding DC voltage to the electrode module 10 according to the voltage adjustment signal. Optionally, the controller module 50 may also include: a seventeenth resistor R17 and a twelfth capacitor C2. The seventeenth resistor R17 and the twelfth capacitor C2 form a filtering circuit to filter the voltage adjustment signal and stabilize it.

[0076] It should be noted that Figure 3 Only the connection between the controller MCU and the voltage regulating pin VSENSE of the DC / DC chip U3 is shown. Those skilled in the art will clearly know how to connect other connections, so they will not be described in detail here.

[0077] In order to enable those skilled in the art to understand the present invention more clearly, the following Figure 3 The working process of the water electrolysis circuit shown is further explained.

[0078] When receiving the electrolysis instruction, the controller module 50 first outputs a preset voltage adjustment signal to the voltage adjustment pin VSENSE through the output voltage control end, so that the DC / DC chip U3 controls the DCDC module 20 to output a preset DC voltage, and at the same time obtains the working current detected by the current detection module 30 and the working voltage detected by the voltage detection module 40, and judges whether the electrode module 10 is abnormal based on the working current and the working voltage. If abnormal, the abnormality is handled. Otherwise, the initial resistance of the electrode module 10 is calculated based on the preset DC voltage (or the detected working voltage) and the detected working current, and then judges whether the initial resistance is within the preset constant current working resistance range. If so, the constant current drive mode is used to control the DCDC module 20, otherwise the constant power drive mode is used to control the DCDC module 20.

[0079] When the constant current driving mode is adopted to control the DCDC module 20, the controller module 50 determines whether the electrode module 10 has an abnormality according to the detected working voltage and working current. If there is an abnormality, the abnormality processing is performed. If there is no abnormality, the DC voltage of the DCDC module 20 is set and the DCDC module 20 is controlled. At the same time, the working current is detected and it is determined whether the current is in a preset current range. If so, the DCDC module 20 is continued to be controlled according to the current DC voltage. Otherwise, the DC voltage of the DCDC module 20 is adjusted so that the working current is in the preset current range. When the constant power driving mode is adopted to control the DCCDC module 20, the controller module 50 determines whether the electrode module 10 has an abnormality according to the detected working voltage and working current. If there is an abnormality ... When the C module 20 is controlling, the controller module 50 determines whether there is any abnormality in the electrode module 10 based on the detected working voltage and working current. If there is an abnormality, the abnormality processing is performed. If there is no abnormality, the DC voltage of the DCDC module 20 is set and the DCDC module 20 is controlled. At the same time, the working voltage and working current are detected, and the operating power is calculated based on the working voltage and working current, and it is determined whether the power is within a preset power range. If so, the DCDC module 20 continues to be controlled according to the current DC voltage. Otherwise, the DC voltage of the DCDC module 20 is adjusted so that the operating power is within the preset power range.

[0080] During the entire process described above, the short-circuit protection module 60 detects in real time whether a short-circuit anomaly occurs in the electrode module 10. When a short-circuit anomaly occurs, the short-circuit protection module 60 outputs a short-circuit protection signal to the controller module 50 and the DCDC module 20. The DCDC module 20 immediately stops outputting a DC voltage to the electrode module 10. The controller module 50 outputs a protection signal to the DCDC module 20 via the protection control terminal, so that the DCDC module 20 stops outputting a DC voltage to the electrode module 10. At the same time, the controller module 50 also determines whether a short-circuit anomaly occurs in the electrode module 10 based on the detected working voltage and working current. When a short-circuit anomaly occurs, the controller module 50 outputs a voltage regulation signal with a DC voltage of zero via the output voltage control terminal, so that the DCDC module 20 maintains the state of stopping outputting a DC voltage to the electrode module 10. In other words, during the entire process, safety protection of the electrode module 10 and the DCDC module 20 can be achieved from multiple aspects.

[0081] To sum up, by determining the initial resistance of the electrolyte solution according to the working voltage and working current of the electrode module, and then determining the corresponding driving mode, and controlling the DC-DC module according to the driving mode so that the electrode module works in the corresponding driving mode, it is possible to effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the short-circuit protection module, rapid protection of the water electrolysis equipment can be achieved, and combined with the controller module based on the detected working voltage and working current, the electrode abnormality can be judged from both voltage and current aspects, making the electrode abnormality judgment more comprehensive and able to analyze the abnormality type.

[0082] In some embodiments of the present invention, reference Figure 4 As shown, a water electrolysis device is also provided. The water electrolysis device 300 includes the water electrolysis circuit 1 described in the above embodiment.

[0083] According to the water electrolysis equipment provided by this embodiment, the water electrolysis circuit described in the above embodiment is used to determine the initial resistance of the electrolyte solution according to the working voltage and working current of the electrode module, and then determine the corresponding driving mode, and control the DC-DC module according to the driving mode so that the electrode module operates in the corresponding driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the detected working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0084] In some embodiments of the present invention, a control method for a water electrolysis device is also provided. It should be noted that the control method can be applied to the aforementioned water electrolysis circuit, referring to Figure 5 As shown, the control method may include the following steps:

[0085] Step S401: obtaining the operating current of the electrode module and obtaining the operating voltage of the electrode module.

[0086] It should be noted that the working current refers to the current between the positive electrode and the negative electrode of the electrode module, and the working voltage refers to the voltage between the positive electrode and the negative electrode of the electrode module. It can be obtained by sampling the aforementioned current detection module and voltage detection module. Of course, it can also be obtained by other methods, which are not limited here.

[0087] Step S402: determining the initial resistance of the salt water according to the operating current and the operating voltage of the electrode module.

[0088] Specifically, after the operating current and the operating voltage are obtained, the initial resistance value can be calculated based on Ohm's law.

[0089] Step S403, determining the driving mode of the electrode module according to the initial resistance value, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in the corresponding driving mode, wherein the driving mode includes a constant current driving mode and a constant power driving mode.

[0090] It should be noted that the initial resistance is negatively correlated with the concentration of the brine: the higher the concentration, the smaller the initial resistance, and the lower the concentration, the larger the initial resistance. Therefore, the initial resistance directly reflects the concentration of the brine, and the drive mode determined based on the initial resistance is matched to the concentration of the brine, so that it conforms to the concentration of the brine. After obtaining the drive mode, the electrolysis efficiency of the electrode module can be improved by controlling the controllable DC-DC module to output a corresponding DC voltage according to the drive mode. At the same time, matching the drive mode with the concentration of the brine can avoid shortening the service life of the positive and negative electrodes of the electrode module and the controllable DC-DC module due to a mismatch between the concentration and the drive mode.

[0091] Furthermore, after obtaining the operating voltage and current, the system can determine whether the electrode module has any abnormalities based on these values. For example, when the operating current exceeds a preset current threshold, the positive and negative electrodes of the electrode module may short-circuit, causing an overcurrent abnormality in the electrode module. When the operating voltage exceeds a preset voltage threshold, the coating of the positive electrode of the electrode module may be shielded by electrolyzed substances, causing an overvoltage abnormality in the electrode module. This allows the operating status of the electrode module to be reflected from both voltage and current, making electrode monitoring more comprehensive.

[0092] In the above embodiment, the initial resistance of the electrolyte solution is determined according to the working voltage and working current of the electrode module, and then the corresponding driving mode is determined, and the controllable DC-DC module is controlled according to the driving mode so that the electrode module operates in the corresponding driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the detected working voltage and working current, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0093] In some embodiments of the present invention, the driving mode of the electrode module is determined based on the initial resistance value, including: judging whether the initial resistance value is in a preset constant current working resistance range; if so, determining that the driving mode of the electrode module is a constant current driving mode; if not, determining that the driving mode of the electrode module is a constant power driving mode.

[0094] That is to say, the corresponding driving mode can be determined by comparing the initial resistance value with the preset constant current working resistance range, wherein, when the initial resistance value is in the constant current working resistance range, it is determined to be the constant current driving mode, and when the initial resistance value is not in the constant current working resistance range, it is determined to be the constant power driving mode.

[0095] Specifically, refer to Figure 6 As shown, the control method of the water electrolysis equipment may include the following steps:

[0096] Step S501: receiving a water electrolysis instruction.

[0097] Step S502 : controlling the controllable DC-DC module to output a first preset voltage.

[0098] Step S503: obtaining the operating current of the electrode module.

[0099] Step S504: Determine whether the electrodes in the electrode module are abnormal. If so, execute step S505; if not, execute step S506.

[0100] Step S505: perform exception handling.

[0101] Step S506: determining the initial resistance value of the salt water.

[0102] Step S507: Determine whether the initial resistance value is within the preset constant current operating resistance range. If so, execute step S508; if not, execute step S509.

[0103] Step S508: The electrode module operates in a constant current driving mode.

[0104] In some embodiments of the present invention, controlling the controllable DC-DC module to adjust the output DC voltage includes: when the driving mode of the electrode module is a constant current driving mode, adjusting the DC voltage output by the controllable DC-DC module according to the operating current of the electrode module so that the operating current of the electrode module is within a preset current range. When the driving mode of the electrode module is a constant power driving mode, determining the operating power of the electrode module according to the operating current and the operating voltage of the electrode module, and adjusting the DC voltage output by the controllable DC-DC module according to the operating power so that the operating power is within a preset power range.

[0105] That is, when in constant current drive mode, the DC voltage of the controllable DC-DC module is further adjusted according to the operating current so that the operating current is within a predetermined current range, i.e., the current during the water electrolysis process remains unchanged. When in constant power mode, the operating power is calculated based on the operating voltage and the operating current, and the DC voltage of the controllable DC-DC module is then adjusted according to the operating power so that the operating power is within a predetermined power range, i.e., the power during the water electrolysis process remains unchanged.

[0106] Specifically, refer to Figure 7 As shown, when the electrode module operates in a constant current driving mode, the following steps may be included:

[0107] Step S601: receiving a constant current driving mode instruction.

[0108] Step S602: Determine whether the electrode is abnormal. If so, proceed to step S603; if not, proceed to step S604.

[0109] Step S603: perform exception handling.

[0110] Step S604: Control the controllable DC-DC module to output an adjustable DC voltage to the electrode module.

[0111] Step S605: obtaining the operating current of the electrode module.

[0112] Step S606 , determining whether the operating current of the electrode module is within a preset constant current operating current value range, if so, executing step 604 ; if not, executing step S602 .

[0113] Step S509: the electrode module operates in a constant power driving mode.

[0114] refer to Figure 8 As shown, when the electrode module operates in a constant power driving mode, the following steps may be included:

[0115] Step S701: receiving a constant power driving mode instruction.

[0116] Step S702: Determine whether the electrode is abnormal. If so, proceed to step S703; if not, proceed to step S704.

[0117] Step S703: perform exception handling.

[0118] Step S704: Control the controllable DC-DC module to output an adjustable DC voltage to the electrode module.

[0119] Step S705: Obtain the operating power of the electrode module.

[0120] Step S706 , determining whether the operating power of the electrode module is within a preset constant power operating power value range, if so, executing step 704 ; if not, executing step S702 .

[0121] According to the control method of the water electrolysis equipment of an embodiment of the present invention, the working current and working voltage of the electrode module are obtained, and the initial resistance of the brine is determined according to the working current and working voltage of the electrode module, thereby determining the driving mode of the electrode module, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, such as a constant current driving mode or a constant power driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to the use of constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to the use of constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the obtained working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0122] In some embodiments of the present invention, a computer-readable storage medium is further provided, on which a control program of the water electrolysis device is stored. When the control program of the water electrolysis device is executed by a processor, the control method of the water electrolysis device of the above embodiment is implemented.

[0123] According to the computer-readable storage medium provided by an embodiment of the present invention, when the control program of the stored water electrolysis equipment is executed, the working current and working voltage of the electrode module are obtained, and the initial resistance of the brine is determined based on the working current and working voltage of the electrode module, and then the driving mode of the electrode module is determined, and the controllable DC-DC module is controlled to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, such as a constant current driving mode or a constant power driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to the use of constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to the use of constant current power supply. The service life of the electrode and the electronic control is effectively improved. At the same time, based on the obtained working voltage and working current of the electrode module, the judgment of electrode abnormality can be realized from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0124] In some embodiments of the present invention, a water electrolysis device is also provided, referring to Figure 9 As shown, the water electrolysis device 800 includes a memory 801, a processor 802, and a control program for the water electrolysis device stored in the memory and executable on the processor. When the processor 802 executes the control program for the water electrolysis device, the control method for the water electrolysis device of the above embodiment is implemented.

[0125] According to the water electrolysis equipment of an embodiment of the present invention, when the processor executes the control program of the water electrolysis equipment, it obtains the working current and working voltage of the electrode module, and determines the initial resistance of the brine based on the working current and working voltage of the electrode module, thereby determining the driving mode of the electrode module, and controlling the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, such as a constant current driving mode or a constant power driving mode. This can effectively solve the problem that when the concentration of the electrolyte solution is low, the service life of the electrode and the electronic control is shortened due to the use of constant voltage power supply, and when the concentration of the electrolyte solution is high, the service life of the electrode and the electronic control is shortened due to the use of constant current power supply. This effectively improves the service life of the electrode and the electronic control. At the same time, based on the obtained working voltage and working current of the electrode module, it can realize the judgment of electrode abnormality from both voltage and current aspects, making the judgment of electrode abnormality more comprehensive.

[0126] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0127] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0128] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0129] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0130] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0131] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0132] In addition, the terms "first" and "second" used in the embodiments of the present invention are only used for descriptive purposes and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated in this embodiment. Therefore, the features defined by the terms "first" and "second" in the embodiments of the present invention can explicitly or implicitly indicate that the embodiment includes at least one of such features. In the description of the present invention, the word "plurality" means at least two or two or more, such as two, three, four, etc., unless otherwise clearly and specifically defined in the embodiments.

[0133] In the present invention, unless otherwise clearly specified or limited in the embodiments, the terms "installed," "connected," "connect," and "fixed" appearing in the embodiments should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection. It can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements, or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood based on the specific implementation.

[0134] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0135] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A control method for water electrolysis equipment, characterized in that: include: Obtaining the operating current of the electrode module and obtaining the operating voltage of the electrode module; determining an initial resistance value of the salt water according to the operating current of the electrode module and the operating voltage of the electrode module; Determining a driving mode of the electrode module according to the initial resistance value, and controlling a controllable DC-DC module to adjust an output DC voltage so that the electrode module operates in a corresponding driving mode, wherein the driving mode includes a constant current driving mode and a constant power driving mode; Determining a driving mode of the electrode module according to the initial resistance value includes: Determining whether the initial resistance value is within a preset constant current operating resistance range; If yes, determining that the driving mode of the electrode module is the constant current driving mode; If not, it is determined that the driving mode of the electrode module is the constant power driving mode.

2. The control method according to claim 1, characterized in that: Controlling the controllable DC-DC module to adjust the output DC voltage includes: When the driving mode of the electrode module is the constant current driving mode, the DC voltage output by the controllable DC-DC module is adjusted according to the working current of the electrode module so that the working current of the electrode module is within a preset current range; When the driving mode of the electrode module is the constant power driving mode, the operating power of the electrode module is determined according to the working current of the electrode module and the working voltage of the electrode module, and the DC voltage output by the controllable DC-DC module is adjusted according to the operating power so that the operating power is within a preset power range.

3. A water electrolysis device, characterized in that: The water electrolysis device is used to execute the control method according to any one of claims 1 to 2.

4. A water electrolysis circuit, characterized in that: The water electrolysis circuit is used for the water electrolysis device in claim 3, and includes: Electrode module, used for electrolysis of brine with different concentrations; a controllable DC-DC module, the controllable DC-DC module being connected to the electrode module to provide an adjustable DC voltage to the electrode module; a current detection module, the current detection module being connected to the electrode module to detect the operating current of the electrode module; a voltage detection module, the voltage detection module being connected to the electrode module to detect the operating voltage of the electrode module; A controller module is connected to the controllable DC-DC module, the current detection module, and the voltage detection module, respectively. The controller module determines the initial resistance of the brine according to the operating current and the operating voltage of the electrode module, determines the driving mode of the electrode module according to the initial resistance, and controls the controllable DC-DC module to adjust the output DC voltage so that the electrode module operates in a corresponding driving mode, wherein the driving mode includes a constant current driving mode and a constant power driving mode.

5. The water electrolysis circuit according to claim 4, characterized in that: Also includes: A short-circuit protection module is connected to the electrode module, the controllable DC-DC module and the controller module respectively. When the short-circuit protection module detects that a short circuit has occurred in the electrode module, the short-circuit protection module controls the controllable DC-DC module to directly shut down the DC voltage output and outputs a short-circuit protection signal to the controller module. The controller module controls the controllable DC-DC module to maintain the output shutdown state according to the short-circuit protection signal.

6. The water electrolysis circuit according to claim 5, characterized in that The short circuit protection module includes: a first resistor, one end of the first resistor being connected to the electrode module; a second resistor, one end of the second resistor being connected to the other end of the first resistor and having a first node, and the other end of the second resistor being connected to a reference power supply; a third resistor, one end of the third resistor being connected to a reference power supply; a fourth resistor, one end of the fourth resistor being connected to the other end of the third resistor and having a second node, and the other end of the fourth resistor being grounded; a first comparator, wherein a positive input terminal of the first comparator is connected to the second node, a negative input terminal of the first comparator is connected to the first node, and an output terminal of the first comparator is connected to the controllable DC-DC module; A second comparator, wherein a positive input terminal of the second comparator is connected to the second node, a negative input terminal of the second comparator is connected to the first node, and an output terminal of the second comparator is connected to the controller module.

7. The water electrolysis circuit according to claim 6, characterized in that: The current detection module includes: a current-sensing resistor, one end of which is connected to the electrode module, and the other end of which is grounded; a fifth resistor, one end of the fifth resistor being connected to one end of the current-sensing resistor; a first capacitor, one end of the first capacitor being connected to the other end of the fifth resistor, and the other end of the first capacitor being grounded; a sixth resistor, one end of the sixth resistor being connected to the other end of the current-sense resistor; a first amplifier, wherein a positive input terminal of the first amplifier is connected to the other end of the fifth resistor, a negative input terminal of the first amplifier is connected to the other end of the sixth resistor, and an output terminal of the first amplifier is connected to the controller module; A seventh resistor is connected between the negative input terminal and the output terminal of the first amplifier.

8. The water electrolysis circuit according to any one of claims 5 to 7, characterized in that: The controllable DC-DC module includes: a DC / DC chip, wherein an output pin of the DC / DC chip is connected to an output terminal of the controllable DC-DC module, an input pin of the DC / DC chip is connected to a power supply, an enable pin of the DC / DC chip is connected to the short-circuit protection module, and a voltage adjustment pin of the DC / DC chip is connected to an output voltage control terminal of the controller module; an eighth resistor, one end of the eighth resistor being connected to the enable pin of the DC / DC chip, and the other end of the eighth resistor being connected to the protection control terminal of the controller module; A parallel diode, wherein an anode of the parallel diode is connected to one end of the eighth resistor, and a cathode of the parallel diode is connected to the other end of the eighth resistor.

9. The water electrolysis circuit according to claim 8, characterized in that: The controllable DC-DC module further includes: a ninth resistor, one end of which is connected to the output end of the controllable DC-DC module; a tenth resistor, one end of the tenth resistor is connected to the other end of the ninth resistor and has a third node, the other end of the tenth resistor is grounded, and the third node is connected to the voltage adjustment pin of the DC / DC chip.

10. The water electrolysis circuit according to claim 4, characterized in that: The voltage detection module includes: an eleventh resistor, one end of the eleventh resistor being connected to the power supply end of the electrode module; a twelfth resistor, one end of the twelfth resistor being connected to the other end of the eleventh resistor and having a fourth node, the other end of the twelfth resistor being grounded, and the fourth node being connected to the controller module; A second capacitor is connected in parallel with the twelfth resistor.

11. A computer-readable storage medium, characterized in that A control program of the water electrolysis device is stored thereon, and when the control program of the water electrolysis device is executed by the processor, the control method of the water electrolysis device according to any one of claims 1-2 is implemented.

12. A water electrolysis device, characterized in that: The invention comprises a memory, a processor and a control program of a water electrolysis device stored in the memory and executable on the processor. When the processor executes the control program of the water electrolysis device, the control method of the water electrolysis device according to any one of claims 1 to 2 is implemented.

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