A polarity reversal method for an electrode device based on an unstable power supply

Abstract

The present invention discloses a polarity reversal method for an electrode device based on an unstable power supply. The electrode device based on an unstable power supply includes an electrode, an unstable power supply, a polarity reversal module, and a control module. The unstable power supply supplies power to the electrode through the polarity reversal module, and the control module controls the polarity reversal module to achieve polarity reversal of the electrode. The polarity reversal method includes: at least in the electrode elimination reverse voltage stage when the electrode device based on the unstable power supply is polarized, limiting the amount of electric energy delivered to the electrode by the unstable power supply or controlling the stable power supply to be connected to the electrode to supply energy to ensure the electric energy required for the operation of the control module in the electrode device based on the unstable power supply. The present invention can ensure that the control module is adequately powered when the electrode is polarized and the unstable power supply is insufficient, thereby preventing it from restarting continuously.

Description

Technical Field

[0001] The invention relates to the field of control methods for electrode devices, in particular to a polarity reversal method for an electrode device based on an unstable power supply. Background Art

[0002] Electrode device, which is a device for achieving electrolysis, such as chlorinators; chlorinators are widely used in swimming pools to improve the water quality in swimming pools.

[0003] With the development of clean energy, electrode devices based on solar energy have emerged. However, the electricity obtained by solar panels is usually stored in batteries, and the batteries are then used to power the electrodes. Since the number of charge and discharge times of batteries is limited, the batteries are set to reduce the service life of the electrode devices based on solar energy; but when the batteries are removed and solar panels are directly used to power the electrodes, the electricity of the solar panels is too low in cloudy days, rainy days, winter, mornings and evenings, cloudy weather, etc. when the lighting conditions are poor, and when the electrodes are reversed, there is a reverse voltage left over from the last electrolysis between the cathode and anode plates. If the solar panels directly power the electrodes, the voltage of the solar panels will drop rapidly, causing the control module to repeatedly restart due to low voltage, and normal reversal cannot be completed, which directly affects the working efficiency and the life of the electrodes. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a reversal method for an electrode device based on an unstable power supply, which can ensure sufficient power supply to the control module and prevent it from restarting continuously when the electrode is reversed and the unstable power supply is insufficient.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A polarity reversal method for an electrode device based on an unstable power supply, the electrode device based on an unstable power supply comprises an electrode, an unstable power supply, a polarity reversal module, and a control module, the unstable power supply supplies power to the electrode through the polarity reversal module, the control module controls the polarity reversal module to achieve polarity reversal of the electrode; the polarity reversal method comprises:

[0007] At least during the electrode reverse voltage elimination stage when the electrode device based on the unstable power supply is reversed, the amount of electric energy delivered to the electrode by the unstable power supply is limited or the stable power supply is controlled to supply energy to the electrode to ensure the electric energy required for the operation of the control module in the electrode device based on the unstable power supply.

[0008] When the electrode is reversed, there will be a reverse voltage left over from the last time on the electrode, and at this time the reverse voltage is opposite to the voltage of the unstable power supply. Due to the characteristics of the unstable power supply, when its power is insufficient, the voltage of the unstable power supply will be pulled down to the point where the control module cannot work, causing the control module to restart repeatedly. The above method can ensure that the control module works normally without restarting.

[0009] Furthermore, at least during the electrode elimination reverse voltage stage when the electrode device based on the unstable power supply is reversed, the amount of electric energy delivered to the electrode by the unstable power supply is limited or the stable power supply is controlled to supply energy to the electrode to ensure the electric energy required for the operation of the control module and the reversal module in the electrode device based on the unstable power supply.

[0010] By adopting the above method, even when the power of the unstable power source is insufficient, the electrode reversal can still be achieved, thereby extending the time of electrode electrolysis and the service life of the electrode.

[0011] Furthermore, limiting the amount of electrical energy delivered to the electrode by the unstable power source includes limiting the amount of voltage and / or current delivered to the electrode by the unstable power source.

[0012] Furthermore, when the electrode elimination reverse voltage stage is completed when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the amount of electric energy delivered to the electrode by the unstable power supply is stopped being limited or the stable power supply is cut off to stop supplying energy to the electrode.

[0013] By adopting the above results, when the electrode elimination reverse voltage stage is completed when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the electrode can obtain maximum electrical energy from the unstable power supply to improve its working efficiency; or the stable power supply is cut out and stopped to extend its service life.

[0014] Specifically, when the reversal begins, if the purpose is to limit the amount of electric energy delivered to the electrode by the unstable power supply, then when the reverse voltage elimination stage is completed or the reversal of the electrode device based on the unstable power supply is completed, the limitation of the electric energy delivered to the electrode by the unstable power supply is stopped; if the purpose is to control the access of the stable power supply to supply energy to the electrode, then when the reverse voltage elimination stage is completed or the reversal of the electrode device based on the unstable power supply is completed, the stable power supply is cut off to stop supplying energy to the electrode.

[0015] Furthermore, the electrode reversal module is an H-bridge circuit, and the control module controls the states of the first bridge arm and the second bridge arm in the H-bridge circuit to achieve the electrode reversal;

[0016] When the first bridge arm changes from cut-off to on and the second bridge arm changes from on to cut-off, the first electrode among the electrodes changes from cathode to anode; the second electrode among the electrodes changes from anode to cathode;

[0017] When the second bridge arm changes from cut-off to on and the first bridge arm changes from on to cut-off, the second electrode among the electrodes changes from cathode to anode; and the first electrode among the electrodes changes from anode to cathode.

[0018] By adopting the above method, the cooperation between the first bridge arm and the second bridge arm realizes the inversion of the electrode.

[0019] Furthermore, the control module drives the first bridge arm to conduct through a first PWM signal and drives the second bridge arm to conduct through a second PWM signal; the control module controls the duty ratio of the first PWM signal and the second PWM signal to limit the voltage delivered to the electrode by the unstable power supply;

[0020] At least in the electrode elimination reverse voltage stage when the electrode device based on the unstable power supply is reversed, if the first PWM signal drives the first bridge arm to be turned on, the duty cycle of the first PWM signal is greater than 0% and less than 100%; if the second PWM signal drives the second bridge arm to be turned on, the duty cycle of the second PWM signal is greater than 0% and less than 100%.

[0021] By adopting the above method, the voltage delivered to the electrode by the unstable power supply is reduced by controlling the duty cycle of the first PWM signal or the duty cycle of the second PWM signal, so as to ensure that the voltage of the unstable power supply can still maintain the operation of the control module;

[0022] In the electrode reverse voltage elimination stage, if the first bridge arm is turned on, the first bridge arm first eliminates the reverse voltage on the electrode through a smaller voltage, so that the equivalent resistance of the electrode slowly increases, preventing the voltage of the unstable power supply from dropping to a voltage where the control module cannot work; if the second bridge arm is turned on, the same applies.

[0023] Further, when the electrode elimination reverse voltage stage when the electrode device based on the unstable power supply is reversed is completed or the electrode device based on the unstable power supply is reversed, if the first PWM signal drives the first bridge arm to turn on, then if the first bridge arm is turned on through a low level, the duty cycle of the first PWM signal is controlled to be 0%, and if the first bridge arm is turned on through a high level, the duty cycle of the first PWM signal is controlled to be 100%, so as to stop limiting the voltage delivered to the electrode by the unstable power supply; if the second PWM signal drives the second bridge arm to turn on, then if the second bridge arm is turned on through a low level, the duty cycle of the second PWM signal is controlled to be 0%, and if the second bridge arm is turned on through a high level, the duty cycle of the second PWM signal is controlled to be 100%, so as to stop limiting the voltage delivered to the electrode by the unstable power supply.

[0024] Further, the first bridge arm includes a first controllable switch and a fourth controllable switch, and the second bridge arm includes a second controllable switch and a third controllable switch; the two ends of the first controllable switch are respectively connected to the first electrode of the electrodes and the positive electrode of the unstable power supply, and the control end is connected to the control module; the two ends of the second controllable switch are respectively connected to the first electrode of the electrodes and the ground, and the control end is connected to the control module; the two ends of the third controllable switch are respectively connected to the second electrode of the electrodes and the positive electrode of the unstable power supply, and the control end is connected to the control module; the two ends of the fourth controllable switch are respectively connected to the second electrode of the electrodes and the ground, and the control end is connected to the control module;

[0025] The control module drives and controls the first controllable switch and the fourth controllable switch through a first PWM signal, and the control module drives and controls the second controllable switch and the third controllable switch through a second PWM signal.

[0026] Specifically, the first controllable switch, the second controllable switch, the third controllable switch, and the fourth controllable switch adopt MOS tubes, and the source and the drain in the first controllable switch, the second controllable switch, the third controllable switch, and the fourth controllable switch are formed as the two ends of the switch, and the gate is formed as the control end; more specifically, the first controllable switch and the third controllable switch adopt PMOS tubes, and the second controllable switch and the fourth controllable switch adopt NMOS tubes.

[0027] Further, the electrode device based on the unstable power supply includes a current limiting resistor and a current limiting resistor control unit for controlling whether the current limiting resistor is connected between the unstable power supply and the electrode;

[0028] At least in the electrode elimination reverse voltage phase when the electrode device based on the unstable power supply is reversed, the current limiting resistor control unit connects the current limiting resistor between the unstable power supply and the electrode to limit the current delivered to the electrode by the unstable power supply;

[0029] When the electrode elimination reverse voltage stage is completed when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the current limiting resistor control unit cuts the current limiting resistor out between the unstable power supply and the electrode to stop limiting the current delivered to the electrode by the unstable power supply.

[0030] By adopting the above method, when the current limiting resistor is connected between the unstable power supply and the electrode, the current delivered to the electrode can be reduced, so that the electrode can be charged with a small current to eliminate the reverse voltage on the electrode;

[0031] Specifically, the current limiting resistor is arranged between the unstable power supply and the inversion module.

[0032] Further, the current limiting resistor control unit includes a fifth controllable switch, the current limiting resistor is arranged between the unstable power supply and the electrode, the switch ends of the fifth controllable switch are respectively connected to the two ends of the current limiting resistor, and the control end is connected to the control module.

[0033] The control module controls the fifth controllable switch to be opened to connect the current limiting resistor between the unstable power source and the electrode; the control module controls the fifth controllable switch to be closed to cut the current limiting resistor out of the unstable power source and the electrode.

[0034] By adopting the above method, when the fifth controllable switch is disconnected, the two ends of the current limiting resistor are not short-circuited, so that the current limiting resistor is connected between the unstable power supply and the electrode; when the fifth controllable switch is closed, the two ends of the current limiting resistor are short-circuited by the fifth controllable switch, so that the current limiting resistor is cut out between the unstable power supply and the electrode;

[0035] Specifically, the fifth controllable switch is a MOS tube, wherein a source and a drain are formed as two ends of the switch, and a gate is formed as a control end; more specifically, the fifth controllable switch is an NMOS tube.

[0036] Further, the electrode device based on unstable power supply includes a stable power supply, and a stable power supply control unit for controlling whether the stable power supply is connected to supply energy to the electrode;

[0037] At least during the electrode elimination reverse voltage phase when the electrode device based on the unstable power supply is reversed, the stable power supply control unit connects the stable power supply to supply energy to the electrode;

[0038] When the electrode elimination reverse voltage phase is completed when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the stable power supply control unit cuts out the stable power supply to stop supplying energy to the electrode.

[0039] By adopting the above method, when the stable power source is connected, the reverse voltage can be quickly eliminated and the electrode can be charged when the electrode is reversed, thereby avoiding affecting the voltage of the unstable power source, so that the control module can still work normally;

[0040] The stable power supply cut-out can extend the service life of the stable power supply;

[0041] Specifically, the stable power supply supplies energy to the electrode through the inversion module.

[0042] Further, the stable power control unit includes a sixth controllable switch, the positive electrode of the stable power supply is connected to the electrode through the inversion module, the negative electrode is grounded through the switch end of the sixth controllable switch, and the control end of the sixth controllable switch is connected to the control module.

[0043] The control module controls the sixth controllable switch to close so as to connect the stable power supply to supply power to the electrode; the control module controls the sixth controllable switch to open so as to cut off the stable power supply to stop supplying power to the electrode.

[0044] Using the above method, when the sixth controllable switch is closed, a loop is formed between the stable power supply and the electrode, and the stable power supply supplies energy to the electrode; when the sixth controllable switch is opened, the stable power supply is disconnected from the electrode, and the stable power supply stops supplying energy to the electrode.

[0045] Specifically, the sixth controllable switch is a MOS tube, wherein a source and a drain form two ends of the switch, and a gate forms a control end; more specifically, the sixth controllable switch is an NMOS tube.

[0046] Furthermore, when the electrode device based on the unstable power supply is reversed, if the voltage across the electrodes is greater than the minimum working voltage value thereof, the electrode device based on the unstable power supply is reversed;

[0047] When the electrode device based on the unstable power supply is reversed, if the reversal time is greater than the time required for the electrode to eliminate the reverse voltage, the electrode reverse voltage elimination stage when the electrode device based on the unstable power supply is reversed is completed.

[0048] Specifically, the minimum working voltage value of the electrode is 1.8V, and the time required for the electrode to eliminate the reverse voltage is greater than 10 seconds.

[0049] Specifically, the control module is connected to the electrode to obtain the voltage and current on the electrode; the electrode device based on the unstable power supply includes a measuring resistor connected in series in the loop in which the unstable power supply supplies energy to the electrode, so as to measure and obtain the current on the electrode.

[0050] Furthermore, the polarity reversal method of the electrode device based on the unstable power supply includes ensuring that the voltage of the unstable power supply is greater than the minimum operating voltage of the control module when the electrode is reversed.

[0051] Specifically, the control module is a single chip microcomputer, and the minimum operating voltage of the control module is 0.5V.

[0052] Furthermore, the electrode device based on unstable power supply is a chlorinator.

[0053] Furthermore, the unstable power source is a solar panel, and the stable power source is a battery.

[0054] Furthermore, the control module is connected to the unstable power supply to obtain its voltage. Before the electrode device based on the unstable power supply is reversed, if the voltage of the unstable power supply is greater than a preset value for reversed polarity, then during reversed polarity, the unstable power supply is not limited in the amount of electric energy delivered to the electrode, and the stable power supply is not controlled to supply energy to the electrode, and the reverse polarity is directly completed; if the voltage of the unstable power supply is less than the preset value for reversed polarity, then during reversed polarity, the unstable power supply is limited in the amount of electric energy delivered to the electrode, or the stable power supply is controlled to supply energy to the electrode to complete the reverse polarity.

[0055] By adopting the above method, whether it is necessary to limit the amount of electric energy delivered to the electrode by the unstable power supply or not to control the stable power supply to supply energy to the electrode is controlled by the voltage of the unstable power supply. When the unstable power supply has sufficient power, the polarity reversal can be completed quickly, and the stable power supply and the polarity reversal module can be protected and the use time can be extended.

[0056] Further, the electrode device based on the unstable power supply includes a test resistor, and a test resistor control unit for controlling whether the unstable power supply supplies energy to the test resistor;

[0057] Before the electrode device based on the unstable power source is reversed, the test resistor control unit controls the unstable power source to supply power to the test resistor to obtain the real voltage magnitude of the unstable power source.

[0058] Due to the characteristics of the unstable power supply, there is a virtual power situation when the power is low, and the control module cannot directly obtain the real voltage situation of the unstable power supply. Using the above method, the test resistor is connected to allow the unstable power supply to power the test resistor. At this time, the control module can obtain the real voltage size of the unstable voltage.

[0059] Specifically, the resistance of the test resistor is equal to or similar to the equivalent resistance of the electrode;

[0060] When the real voltage magnitude of the unstable voltage is obtained before the electrode device based on the unstable power supply is reversed, the test resistor control unit controls the unstable power supply to stop supplying power to the test resistor.

[0061] Further, the test resistor control unit includes a seventh controllable switch, one end of the test resistor is connected to the positive electrode of the unstable power supply, the other end is grounded through the switch end of the seventh controllable switch, and the control end of the seventh controllable switch is connected to the control module.

[0062] The control module controls the seventh controllable switch to be closed so that the unstable power supply supplies power to the test resistor; the control module controls the seventh switch to be opened so that the unstable power supply stops supplying power to the test resistor.

[0063] Specifically, the seventh controllable switch is a MOS tube, wherein a source and a drain form two ends of the switch, and a gate forms a control end; more specifically, the seventh controllable switch is an NMOS tube.

[0064] Compared with the prior art, the present invention has the following beneficial effects: the inversion method of the electrode device based on the unstable power supply of the present invention can ensure that the control module has sufficient power supply when the electrode is reversed and the unstable power supply is insufficient, thereby preventing it from restarting continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a schematic diagram of the circuit structure of the electrode device based on the unstable power supply in the present invention;

[0066] Figure 2 It is a flow chart of a pole reversal method of a motor device based on an unstable power supply according to the present invention;

[0067] Figure 3 It is a flow chart of another embodiment of the pole reversal method of a motor device based on an unstable power supply of the present invention;

[0068] Figure numerals: 1 electrode; 101 first electrode; 102 second electrode; 2 unstable power supply; 3 inversion module; 301 first bridge arm; 3011 first controllable switch; 3012 fourth controllable switch; 302 second bridge arm; 3021 second controllable switch; 3022 third controllable switch; 4 control module; 5 stable power supply; 6 current limiting resistor; 7 current limiting resistor control unit; 701 fifth controllable switch; 8 stable power supply control unit; 801 sixth controllable switch; 9 test resistor 10 test resistor control unit; 1001 seventh controllable switch; 11 measuring resistor. DETAILED DESCRIPTION

[0069] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0070] like Figure 1 As shown in FIG. 2 , a polarity reversal method of an electrode device based on an unstable power supply, the electrode device based on an unstable power supply comprises an electrode 1, an unstable power supply 2, a polarity reversal module 3, and a control module 4, the unstable power supply 2 supplies power to the electrode 1 through the polarity reversal module 3, the control module 4 controls the polarity reversal module 3 to achieve the polarity reversal of the electrode 1; the polarity reversal method comprises:

[0071] At least in the stage of eliminating the reverse voltage of electrode 1 when the electrode device based on the unstable power supply is reversed, the amount of electric energy delivered to electrode 1 by the unstable power supply 2 is limited or the stable power supply 5 is controlled to supply energy to electrode 1 to ensure the electric energy required for the operation of the control module 4 in the electrode device based on the unstable power supply.

[0072] When the electrode 1 is reversed, there will be a reverse voltage left over from the last time on the electrode 1, and at this time the reverse voltage is opposite to the voltage of the unstable power supply 2. Due to the characteristics of the unstable power supply 2, when its power is insufficient, the voltage of the unstable power supply 2 will be pulled down to the point where the control module 4 cannot work, causing the control module 4 to restart repeatedly. The above method can ensure that the control module 4 works normally without restarting.

[0073] Furthermore, at least in the stage of eliminating the reverse voltage of electrode 1 when the electrode device based on the unstable power supply is reversed, the amount of electric energy delivered to electrode 1 by the unstable power supply 2 is limited or the stable power supply 5 is controlled to supply energy to electrode 1 to ensure the electric energy required for the operation of the control module 4 and the reversal module 3 in the electrode device based on the unstable power supply.

[0074] By adopting the above method, when the unstable power source 2 has insufficient power, the electrode 1 can still be reversed, thereby extending the electrolysis time of the electrode 1 and the service life of the electrode 1.

[0075] Furthermore, limiting the amount of electric energy delivered to the electrode 1 by the unstable power source 2 includes limiting the amount of voltage and / or current delivered to the electrode 1 by the unstable power source 2 .

[0076] Furthermore, when the reverse voltage elimination stage of electrode 1 is completed when the electrode device based on the unstable power supply is reversed or when the reverse of the electrode device based on the unstable power supply is completed, the limiting of the amount of electric energy delivered to electrode 1 by the unstable power supply 2 is stopped or the stable power supply 5 is cut off to stop supplying energy to electrode 1.

[0077] By using the above results, when the electrode 1 completes the reverse voltage elimination stage when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the electrode 1 can obtain maximum electrical energy from the unstable power supply 2 to improve its working efficiency; or the stable power supply 5 is cut out and stopped to extend its service life.

[0078] Specifically, when the reversal begins, if the purpose is to limit the amount of electric energy delivered to the electrode 1 by the unstable power supply 2, then when the reverse voltage elimination stage is completed or the reversal of the electrode device based on the unstable power supply is completed, the limitation of the amount of electric energy delivered to the electrode 1 by the unstable power supply 2 is stopped; if the purpose is to control the stable power supply 5 to supply energy to the electrode 1, then when the reverse voltage elimination stage is completed or the reversal of the electrode device based on the unstable power supply is completed, the stable power supply 5 is cut off to stop supplying energy to the electrode 1.

[0079] like Figure 1 As shown, further, the polarity reversal module 3 is an H-bridge circuit, and the control module 4 controls the states of the first bridge arm 301 and the second bridge arm 302 in the H-bridge circuit to achieve polarity reversal of the electrode 1;

[0080] When the first bridge arm 301 changes from cut-off to on and the second bridge arm 302 changes from on to cut-off, the first electrode 101 in the electrode 1 changes from cathode to anode; the second electrode 102 in the electrode 1 changes from anode to cathode;

[0081] When the second bridge arm 302 changes from cut-off to on and the first bridge arm 301 changes from on to cut-off, the second electrode 102 in the electrode 1 changes from cathode to anode; the first electrode 101 in the electrode 1 changes from anode to cathode.

[0082] By adopting the above method, the cooperation between the first bridge arm 301 and the second bridge arm 302 realizes the polarity reversal of the electrode 1 .

[0083] Furthermore, the control module 4 drives the first bridge arm 301 to turn on through the first PWM signal and drives the second bridge arm 302 to turn on through the second PWM signal; the control module 4 controls the duty ratio of the first PWM signal and the second PWM signal to limit the voltage delivered to the electrode 1 by the unstable power source 2;

[0084] At least in the stage of eliminating the reverse voltage of electrode 1 when the electrode device based on the unstable power supply is reversed, if the first PWM signal drives the first bridge arm 301 to be turned on, the duty cycle of the first PWM signal is greater than 0% and less than 100%; if the second PWM signal drives the second bridge arm 302 to be turned on, the duty cycle of the second PWM signal is greater than 0% and less than 100%.

[0085] By adopting the above method, the voltage delivered from the unstable power source 2 to the electrode 1 is reduced by controlling the duty cycle of the first PWM signal or the duty cycle of the second PWM signal, so as to ensure that the voltage of the unstable power source 2 can still maintain the operation of the control module 4;

[0086] In the stage of eliminating the reverse voltage on the electrode 1, if the first bridge arm 301 is turned on, the first bridge arm 301 first eliminates the reverse voltage on the electrode 1 through a smaller voltage, so that the equivalent resistance of the electrode 1 slowly increases, preventing the voltage of the unstable power supply 2 from dropping to a voltage that the control module 4 cannot work; if the second bridge arm 302 is turned on, the same applies.

[0087] Further, when the reverse voltage elimination stage of electrode 1 is completed when the electrode device based on the unstable power supply is reversed or the reverse of the electrode device based on the unstable power supply is completed, if the first PWM signal drives the first bridge arm 301 to be turned on, then if the first bridge arm 301 is turned on through a low level, the duty cycle of the first PWM signal is controlled to be 0%; if the first bridge arm 301 is turned on through a high level, the duty cycle of the first PWM signal is controlled to be 100%, so as to stop limiting the voltage delivered to the electrode 1 by the unstable power supply 2; if the second PWM signal drives the second bridge arm 302 to be turned on, then if the second bridge arm 302 is turned on through a low level, the duty cycle of the second PWM signal is controlled to be 0%; if the second bridge arm 302 is turned on through a high level, the duty cycle of the second PWM signal is controlled to be 100%, so as to stop limiting the voltage delivered to the electrode 1 by the unstable power supply 2.

[0088] Further, the first bridge arm 301 includes a first controllable switch 3011 and a fourth controllable switch 3012, and the second bridge arm 302 includes a second controllable switch 3021 and a third controllable switch 3022; the two ends of the first controllable switch 3011 are respectively connected to the first electrode 101 in the electrode 1 and the positive electrode of the unstable power supply 2, and the control end is connected to the control module 4; the two ends of the second controllable switch 3021 are respectively connected to the first electrode 101 in the electrode 1 and the ground, and the control end is connected to the control module 4; the two ends of the third controllable switch 3022 are respectively connected to the second electrode 102 in the electrode 1 and the positive electrode of the unstable power supply 2, and the control end is connected to the control module 4; the two ends of the fourth controllable switch 3012 are respectively connected to the second electrode 102 in the electrode 1 and the ground, and the control end is connected to the control module 4;

[0089] The control module 4 drives and controls the first controllable switch 3011 and the fourth controllable switch 3012 through a first PWM signal, and the control module 4 drives and controls the second controllable switch 3021 and the third controllable switch 3022 through a second PWM signal.

[0090] Specifically, the first controllable switch 3011, the second controllable switch 3021, the third controllable switch 3022, and the fourth controllable switch 3012 use MOS tubes, and the source and drain in the first controllable switch 3011, the second controllable switch 3021, the third controllable switch 3022, and the fourth controllable switch 3012 are formed as the two ends of the switch, and the gate is formed as the control end; more specifically, the first controllable switch 3011 and the third controllable switch 3022 use PMOS tubes, and the second controllable switch 3021 and the fourth controllable switch 3012 use NMOS tubes.

[0091] like Figure 1 As shown, further, the electrode device based on the unstable power supply includes a current limiting resistor 6, and a current limiting resistor control unit 7 for controlling whether the current limiting resistor 6 is connected between the unstable power supply 2 and the electrode 1;

[0092] At least in the stage of eliminating the reverse voltage of the electrode 1 when the electrode device based on the unstable power supply is reversed, the current limiting resistor control unit 7 connects the current limiting resistor 6 between the unstable power supply 2 and the electrode 1 to limit the current size delivered to the electrode 1 by the unstable power supply 2;

[0093] When the reverse voltage elimination stage of electrode 1 is completed when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the current limiting resistor control unit 7 cuts out the current limiting resistor 6 between the unstable power supply 2 and the electrode 1 to stop limiting the current delivered to the electrode 1 by the unstable power supply 2.

[0094] By adopting the above method, when the current limiting resistor 6 is connected between the unstable power source 2 and the electrode 1, the current delivered to the electrode 1 can be reduced, so that the electrode 1 is charged with a small current to eliminate the reverse voltage on the electrode 1;

[0095] Specifically, the current limiting resistor 6 is arranged between the unstable power supply 2 and the inversion module 3 .

[0096] Further, the current limiting resistor control unit 7 includes a fifth controllable switch 701, the current limiting resistor 6 is arranged between the unstable power supply 2 and the electrode 1, the two ends of the switch of the fifth controllable switch 701 are respectively connected to the two ends of the current limiting resistor 6, and the control end is connected to the control module 4.

[0097] The control module 4 controls the fifth controllable switch 701 to open so as to connect the current limiting resistor 6 between the unstable power source 2 and the electrode 1; the control module 4 controls the fifth controllable switch 701 to close so as to cut the current limiting resistor 6 out of the unstable power source 2 and the electrode 1.

[0098] By adopting the above method, when the fifth controllable switch 701 is disconnected, the two ends of the current limiting resistor 6 are not short-circuited, so that the current limiting resistor 6 is connected between the unstable power source 2 and the electrode 1; when the fifth controllable switch 701 is closed, the two ends of the current limiting resistor 6 are short-circuited by the fifth controllable switch 701, so that the current limiting resistor 6 is cut out between the unstable power source 2 and the electrode 1;

[0099] Specifically, the fifth controllable switch 701 is a MOS tube, wherein a source and a drain are formed as two ends of the switch, and a gate is formed as a control end; more specifically, the fifth controllable switch 701 is an NMOS tube.

[0100] like Figure 1 As shown, further, the electrode device based on the unstable power supply includes a stable power supply 5, and a stable power supply control unit 8 for controlling whether the stable power supply 5 is connected to supply energy to the electrode 1;

[0101] At least during the phase of eliminating the reverse voltage of the electrode 1 when the electrode device based on the unstable power supply is reversed, the stable power supply control unit 8 connects the stable power supply 5 to supply energy to the electrode 1;

[0102] When the reverse voltage elimination stage of the electrode 1 is completed when the electrode device based on the unstable power supply is reversed or the reverse of the electrode device based on the unstable power supply is completed, the stable power supply control unit 8 cuts out the stable power supply 5 to stop supplying energy to the electrode 1 .

[0103] By adopting the above method, when the stable power source 5 is connected, the reverse voltage can be quickly eliminated and the electrode 1 can be charged when the electrode 1 is reversed, thereby avoiding affecting the voltage of the unstable power source 2, so the control module 4 can still work normally;

[0104] The stable power supply 5 can be cut out to extend the service life of the stable power supply 5;

[0105] Specifically, the stable power supply 5 supplies energy to the electrode 1 through the inversion module 3 .

[0106] Furthermore, the stable power control unit 8 includes a sixth controllable switch 801, the positive electrode of the stable power supply 5 is connected to the electrode 1 through the inverting module 3, the negative electrode is grounded through the switch end of the sixth controllable switch 801, and the control end of the sixth controllable switch 801 is connected to the control module 4.

[0107] The control module 4 controls the sixth controllable switch 801 to close so as to connect the stable power source 5 to supply power to the electrode 1 ; the control module 4 controls the sixth controllable switch 801 to open so as to cut off the stable power source 5 to stop supplying power to the electrode 1 .

[0108] Using the above method, when the sixth controllable switch 801 is closed, a loop is formed between the stable power supply 5 and the electrode 1, and the stable power supply 5 supplies energy to the electrode 1; when the sixth controllable switch 801 is disconnected, the stable power supply 5 is disconnected from the electrode 1, and the stable power supply 5 stops supplying energy to the electrode 1.

[0109] Specifically, the sixth controllable switch 801 is a MOS tube, wherein the source and the drain form the two ends of the switch, and the gate forms the control end; more specifically, the sixth controllable switch 801 is an NMOS tube.

[0110] Furthermore, when the electrode device based on the unstable power supply is reversed, if the voltage across the electrode 1 is greater than its minimum working voltage value, the electrode device based on the unstable power supply is reversed;

[0111] When the electrode device based on the unstable power supply is reversed, if the reversal time is greater than the time required for electrode 1 to eliminate the reverse voltage, the stage of eliminating the reverse voltage of electrode 1 when the electrode device based on the unstable power supply is reversed is completed.

[0112] Specifically, the minimum working voltage value of the electrode 1 is 1.8V, and the time required for the electrode 1 to eliminate the reverse voltage is greater than 10 seconds.

[0113] Specifically, the control module 4 is connected to the electrode 1 to obtain the voltage and current on the electrode 1; the electrode device based on the unstable power supply includes a measuring resistor 11 connected in series in the loop of the unstable power supply 2 to supply energy to the electrode 1, so as to measure and obtain the current on the electrode 1.

[0114] Furthermore, the polarity reversal method of the electrode device based on the unstable power supply includes ensuring that the voltage of the unstable power supply 2 is greater than the minimum operating voltage of the control module 4 when the electrode 1 is reversed.

[0115] Specifically, the control module 4 is a single chip microcomputer, and the minimum operating voltage of the control module 4 is 0.5V.

[0116] Furthermore, the electrode device based on unstable power supply is a chlorinator.

[0117] Furthermore, the unstable power source 2 is a solar panel, and the stable power source 5 is a battery.

[0118] like Figure 1 and 3 As shown, further, the control module 4 is connected to the unstable power supply 2 to obtain its voltage. Before the electrode device based on the unstable power supply is reversed, if the voltage of the unstable power supply 2 is greater than the preset value of the reverse polarity, then during the reverse polarity, the unstable power supply 2 is not limited in the amount of electric energy delivered to the electrode 1, and the stable power supply 5 is not controlled to be connected to supply energy to the electrode 1, and the reverse polarity is directly completed; if the voltage of the unstable power supply 2 is less than the preset value of the reverse polarity, then during the reverse polarity, the unstable power supply 2 is limited in the amount of electric energy delivered to the electrode 1, or the stable power supply 5 is controlled to be connected to supply energy to the electrode 1 to complete the reverse polarity.

[0119] By adopting the above method, whether it is necessary to limit the amount of electric energy delivered to the electrode 1 by the unstable power supply 2 or not to control the stable power supply 5 to supply energy to the electrode 1 is controlled by the voltage of the unstable power supply 2. When the unstable power supply 2 has sufficient power, the polarity reversal can be completed quickly, and the stable power supply 5 and the polarity reversal module 3 can be protected and the use time can be extended.

[0120] Further, the electrode device based on the unstable power supply includes a test resistor 9, and a test resistor control unit 10 for controlling whether the unstable power supply 2 supplies energy to the test resistor 9;

[0121] Before the electrode device based on the unstable power source is reversed, the test resistor control unit 10 controls the unstable power source 2 to supply power to the test resistor 9 to obtain the real voltage magnitude of the unstable power source 2 .

[0122] Due to the characteristics of the unstable power supply 2, there is a virtual power situation when the power is insufficient, and the control module 4 cannot directly obtain the real voltage situation of the unstable power supply 2. Using the above method, the test resistor 9 is connected, and the unstable power supply 2 supplies power to the test resistor 9. At this time, the control module 4 can obtain the real voltage size of the unstable voltage.

[0123] Specifically, the resistance of the test resistor 9 is equal to or similar to the equivalent resistance of the electrode 1;

[0124] After obtaining the real voltage magnitude of the unstable voltage before the electrode device based on the unstable power supply is reversed, the test resistor control unit 10 controls the unstable power supply 2 to stop supplying power to the test resistor 9 .

[0125] Further, the test resistor control unit 10 includes a seventh controllable switch 1001, one end of the test resistor 9 is connected to the positive electrode of the unstable power supply 2, and the other end is grounded through the switch end of the seventh controllable switch 1001, and the control end of the seventh controllable switch 1001 is connected to the control module 4.

[0126] The control module 4 controls the seventh controllable switch 1001 to close so that the unstable power supply 2 supplies power to the test resistor 9; the control module 4 controls the seventh switch to open so that the unstable power supply 2 stops supplying power to the test resistor 9.

[0127] Specifically, the seventh controllable switch 1001 is a MOS tube, wherein a source and a drain are formed as two ends of the switch, and a gate is formed as a control end; more specifically, the seventh controllable switch 1001 is an NMOS tube.

[0128] The following is the data measured using a solar chlorinator as an example, under the test conditions of a water temperature of 26 degrees, a salt concentration of 3000ppm, a 20-gram electrode (single), and a solar panel of 18V / 50W:

[0129] Data comparison on rainy days:

[0130]

[0131]

[0132] Comparison of cloudy data:

[0133]

[0134] Another set of data comparison on a cloudy day:

[0135]

[0136] Comparison of data when it is cloudy:

[0137]

[0138]

[0139] Comparison of data on sunny days:

[0140]

[0141] Among them, in the control column of the table, "PWM" means that the solar chlorinator uses the first PWM signal to drive the first bridge arm and the second PWM signal to drive the second bridge arm to limit the voltage delivered to the electrode by the solar panel for polarity reversal; "current limiting resistor" means that the solar chlorinator uses the current limiting resistor to limit the current delivered to the electrode by the solar panel for polarity reversal; "battery" means that the solar chlorinator uses the battery to supply energy to the electrode for polarity reversal; "direct" means that the solar chlorinator uses the solar panel to directly supply power to the electrode during polarity reversal and does not limit the amount of electric energy delivered to the electrode by the solar panel and does not use the battery to supply energy to the electrode.

[0142] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for reversing an electrode device based on an unstable power supply, characterized in that: The electrode device based on an unstable power supply comprises an electrode (1), an unstable power supply (2), a polarity reversal module (3), and a control module (4); the unstable power supply (2) supplies power to the electrode (1) through the polarity reversal module (3); and the control module (4) controls the polarity reversal module (3) to achieve polarity reversal of the electrode (1); The polarity reversal method comprises: At least during the phase of eliminating the reverse voltage of the electrode (1) when the electrode device based on the unstable power source is reversed, the amount of electric energy delivered to the electrode (1) by the unstable power source (2) is limited, or the stable power source (5) is controlled to be connected to supply energy to the electrode (1) to ensure the electric energy required for the operation of the control module (4) in the electrode device based on the unstable power source; The polarity reversal module (3) is an H-bridge circuit, and the control module (4) controls the states of the first bridge arm (301) and the second bridge arm (302) in the H-bridge circuit to achieve polarity reversal of the electrode (1); When the first bridge arm (301) changes from being cut off to being on, and the second bridge arm (302) changes from being on to being cut off, the first electrode (101) in the electrode (1) changes from being a cathode to being an anode; and the second electrode (102) in the electrode (1) changes from being an anode to being a cathode; When the second bridge arm (302) changes from cut-off to on and the first bridge arm (301) changes from on to cut-off, the second electrode (102) in the electrode (1) changes from cathode to anode; and the first electrode (101) in the electrode (1) changes from anode to cathode.

2. The method for reversing the electrode device based on unstable power supply according to claim 1, characterized in that: At least during the phase of eliminating the reverse voltage of the electrode (1) when the electrode device based on the unstable power source is reversed, the amount of electric energy delivered to the electrode (1) by the unstable power source (2) is limited, or the stable power source (5) is controlled to be connected to supply energy to the electrode (1) to ensure the electric energy required for the operation of the control module (4) and the reverse module (3) in the electrode device based on the unstable power source; When the reverse voltage elimination phase of the electrode (1) is completed when the electrode device based on the unstable power supply is reversed or when the reverse of the electrode device based on the unstable power supply is completed, the limiting of the amount of electric energy delivered to the electrode (1) by the unstable power supply (2) is stopped or the stable power supply (5) is cut off to stop supplying energy to the electrode (1).

3. The method for reversing the electrode device based on unstable power supply according to claim 1, characterized in that: The control module (4) drives the first bridge arm (301) to turn on through a first PWM signal, and drives the second bridge arm (302) to turn on through a second PWM signal; the control module (4) controls the duty ratio of the first PWM signal and the second PWM signal to limit the voltage delivered from the unstable power source (2) to the electrode (1); At least in the reverse voltage elimination phase of the electrode (1) when the electrode device based on the unstable power supply is reversed, if the first PWM signal drives the first bridge arm (301) to be turned on, the duty cycle of the first PWM signal is greater than 0% and less than 100%; if the second PWM signal drives the second bridge arm (302) to be turned on, the duty cycle of the second PWM signal is greater than 0% and less than 100%; When the electrode (1) completes the reverse voltage elimination phase when the electrode device based on the unstable power supply is reversed or the electrode device based on the unstable power supply is reversed, if the first PWM signal drives the first bridge arm (301) to turn on, then if the first bridge arm (301) is turned on through a low level, the duty cycle of the first PWM signal is controlled to be 0%, and if the first bridge arm (301) is turned on through a high level, the duty cycle of the first PWM signal is controlled to be 100%, so as to stop limiting the voltage delivered to the electrode (1) by the unstable power supply (2); if the second PWM signal drives the second bridge arm (302) to turn on, then if the second bridge arm (302) is turned on through a low level, the duty cycle of the second PWM signal is controlled to be 0%, and if the second bridge arm (302) is turned on through a high level, the duty cycle of the second PWM signal is controlled to be 100%, so as to stop limiting the voltage delivered to the electrode (1) by the unstable power supply (2).

4. The method for reversing the electrode device based on unstable power supply according to claim 3, characterized in that: The first bridge arm (301) comprises a first controllable switch (3011) and a fourth controllable switch (3012), and the second bridge arm (302) comprises a second controllable switch (3021) and a third controllable switch (3022); the first controllable switch (3011) has two ends connected to the first electrode (101) in the electrode (1) and the positive electrode of the unstable power source (2), and the control end connected to the control module (4); the second controllable switch (3021) has two ends connected to the positive electrode (101) in the electrode (1) and the positive electrode of the unstable power source (2), and the control end connected to the control module (4); The first electrode (101) of the electrode (1) is connected to the ground, and the control end is connected to the control module (4); the two ends of the switch of the third controllable switch (3022) are respectively connected to the second electrode (102) of the electrode (1) and the positive electrode of the unstable power source (2), and the control end is connected to the control module (4); the two ends of the switch of the fourth controllable switch (3012) are respectively connected to the second electrode (102) of the electrode (1) and the ground, and the control end is connected to the control module (4); The control module (4) drives and controls the first controllable switch (3011) and the fourth controllable switch (3012) through a first PWM signal, and the control module (4) drives and controls the second controllable switch (3021) and the third controllable switch (3022) through a second PWM signal.

5. The method for reversing the electrode device based on unstable power supply according to claim 1, characterized in that: The electrode device based on an unstable power supply comprises a current limiting resistor (6) and a current limiting resistor control unit (7) for controlling whether the current limiting resistor (6) is connected between the unstable power supply (2) and the electrode (1); At least during the phase of eliminating the reverse voltage of the electrode (1) when the electrode device based on the unstable power supply is reversed, the current limiting resistor control unit (7) connects the current limiting resistor (6) between the unstable power supply (2) and the electrode (1) to limit the magnitude of the current delivered from the unstable power supply (2) to the electrode (1); When the electrode (1) completes the reverse voltage elimination phase when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the current limiting resistor control unit (7) cuts out the current limiting resistor (6) between the unstable power supply (2) and the electrode (1) to stop limiting the current delivered from the unstable power supply (2) to the electrode (1).

6. The method for reversing the electrode device based on unstable power supply according to claim 5, characterized in that: The current limiting resistor control unit (7) comprises a fifth controllable switch (701), the current limiting resistor (6) is arranged between the unstable power source (2) and the electrode (1), the switch ends of the fifth controllable switch (701) are respectively connected to the two ends of the current limiting resistor (6), and the control end is connected to the control module (4), The control module (4) controls the fifth controllable switch (701) to be opened so as to connect the current-limiting resistor (6) between the unstable power source (2) and the electrode (1); and the control module (4) controls the fifth controllable switch (701) to be closed so as to cut the current-limiting resistor (6) out of the unstable power source (2) and the electrode (1).

7. The method for reversing the electrode device based on unstable power supply according to claim 1, characterized in that: The electrode device based on an unstable power supply comprises a stable power supply (5) and a stable power supply control unit (8) for controlling whether the stable power supply (5) is connected to supply energy to the electrode (1); At least during the phase of eliminating the reverse voltage of the electrode (1) when the electrode device based on the unstable power supply is reversed, the stable power supply control unit (8) connects the stable power supply (5) to supply energy to the electrode (1); When the electrode (1) completes the reverse voltage elimination phase when the electrode device based on the unstable power supply is reversed or when the electrode device based on the unstable power supply is reversed, the stable power supply control unit (8) cuts out the stable power supply (5) to stop supplying energy to the electrode (1).

8. The method for reversing the electrode device based on unstable power supply according to claim 7, characterized in that: The stable power supply control unit (8) comprises a sixth controllable switch (801), the positive electrode of the stable power supply (5) is connected to the electrode (1) through the inverting module (3), the negative electrode is grounded through the switch end of the sixth controllable switch (801), and the control end of the sixth controllable switch (801) is connected to the control module (4). The control module (4) controls the sixth controllable switch (801) to close so as to connect the stable power source (5) to supply power to the electrode (1); and the control module (4) controls the sixth controllable switch (801) to open so as to cut off the stable power source (5) to stop supplying power to the electrode (1).

9. The method for reversing the electrode device based on unstable power supply according to claim 2, characterized in that: When the electrode device based on the unstable power supply is reversed, if the voltage across the electrode (1) is greater than its minimum working voltage value, the electrode device based on the unstable power supply is reversed; When the electrode device based on the unstable power supply is reversed, if the reversal time is greater than the time required for the electrode (1) to eliminate the reverse voltage, the electrode (1) reverse voltage elimination stage when the electrode device based on the unstable power supply is reversed is completed.

10. The method for reversing the electrode device based on unstable power supply according to claim 1, characterized in that: The unstable power source (2) is a solar panel, and the stable power source (5) is a battery; The control module (4) is connected to the unstable power source (2) to obtain its voltage. Before the electrode device based on the unstable power source is reversed, if the voltage of the unstable power source (2) is greater than a preset value for reversed polarity, then during reversed polarity, the power delivered to the electrode (1) by the unstable power source (2) is not limited, and the stable power source (5) is not controlled to be connected to supply energy to the electrode (1), and reversed polarity is directly completed; if the voltage of the unstable power source (2) is less than the preset value for reversed polarity, then during reversed polarity, the power delivered to the electrode (1) by the unstable power source (2) is limited, or the stable power source (5) is controlled to be connected to supply energy to the electrode (1) to complete reversed polarity; The electrode device based on an unstable power supply comprises a test resistor (9) and a test resistor control unit (10) for controlling whether the unstable power supply (2) supplies energy to the test resistor (9); Before the electrode device based on the unstable power source is reversed, the test resistor control unit (10) controls the unstable power source (2) to supply power to the test resistor (9) to obtain the actual voltage magnitude of the unstable power source (2).

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