Electrode-to-cabin self-cleaning system and method applied in low-conductivity fluid connected domain

Abstract

The invention provides an electrode pair cabin self-cleaning system and method applied to a low-conductivity fluid connected domain, and the system comprises a battery cabin which is provided with a metal plate pair electrode for supplying electric energy to a power management module; the power supply management module is used for meeting the power utilization requirement of a load, providing redundant electric energy for the energy storage battery, and disconnecting the circuit connection with the battery cabin when detecting that the power of the electric energy output by the battery cabin is lower than a preset threshold value; the energy storage battery is used for providing electric energy for the power supply management module when the energy storage battery is disconnected with the battery cabin circuit, so that the power supply management module can charge the energy storage capacitor while meeting the power supply of the load; and the energy storage capacitor is used for performing transient high-frequency discharge on the opposite poles of the metal plates in the battery cabin when the energy storage capacitor is charged to a rated voltage value. According to the scheme, the defect that scale deposits or adheres to the surface of an electrode-to-plate under the condition of long-time operation in a fluid connected domain of an existing electrode-to-plate electric energy output device with low-conductivity fluid as electrolyte is overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of new concept special-purpose power supply, and in particular to a self-cleaning system and method for electrode pair chambers applied in a low-conductivity fluid communication domain. Background Art

[0002] The metal plate power output device using low-conductivity fluid as electrolyte is immersed in an open and boundless fluid connection domain as a whole. It does not need to carry a dedicated electrolyte and has the characteristics of high stability output and long life. The low-conductivity fluid in nature reacts chemically with the plates of the metal electrode pair. Some insoluble oxides and impurities in the low-conductivity fluid are deposited, which will form a dense layer of scale on the surface of the electrode pair, especially the anode plate, preventing further contact between the low-conductivity fluid and the anode plate material, reducing the efficiency of the entire system, and even seriously blocking the low-conductivity fluid from entering the electrode pair compartment for replenishment, completely terminating the reaction and no longer outputting energy to the outside. If the application environment is difficult for personnel to access, such as deep ocean waters far from land, especially waters covered by ice sheets, the system needs to be able to automatically remove the scale on the surface of the electrode pair, otherwise the system will become disabled and scrapped. At present, most of the related technologies proposed do not consider how to solve the problem of scaling of the electrode on the surface of the metal plate (refer to the following patent application documents, the following are patent application numbers: CN201810253210.X, CN202121278149.8, CN202010672253.9, etc.). Summary of the invention

[0003] The technical problem to be solved by the present invention is: to overcome the shortcomings of deposition or adhesion of scale on the surface of the electrode pair plates in the fluid connection domain of the existing electrode-to-plate power output device using low-conductivity fluid as the electrolyte during long-term operation, and to provide a self-cleaning system and method for the surface of the electrode pair plates in the low-conductivity fluid connection domain using high-frequency strong pulse current, so as to achieve continuous and stable high-power energy output of the electrode pair plates, and the energy loss during the execution process is small, the scale is completely shed and the particles are small, and it is easy to flow away with the low-conductivity liquid, so as to promote the effective application of metal plate power output devices using low-conductivity fluid as the electrolyte in actual engineering in the connection domain.

[0004] The technical solution adopted by the present invention to solve the above problems is:

[0005] An electrode pair chamber self-cleaning system applied in a low-conductivity fluid communication domain, comprising:

[0006] A battery compartment, in which the metal plate pairs provide electrical energy to the power management module;

[0007] A power management module is used to meet the power consumption of the load and provide excess power to the energy storage battery, and disconnect the circuit connection with the battery compartment when it is detected that the power output of the battery compartment is lower than a preset threshold;

[0008] The energy storage battery is used to provide power to the power management module when disconnected from the battery compartment circuit, so that the power management module can charge the energy storage capacitor while satisfying the load power supply;

[0009] The energy storage capacitor is used to discharge transiently and at high frequency to one of the metal plate pairs in the battery compartment when it is charged to the rated voltage value.

[0010] A method for self-cleaning an electrode pair chamber in a low-conductivity fluid communication domain, the method being performed by the above-mentioned electrode pair chamber self-cleaning system in a low-conductivity fluid communication domain, comprising the following steps:

[0011] Step 1, determine whether the voltage power outputted by the metal plate counter-electrode is lower than a preset threshold value, if yes, go to step 2;

[0012] Step 2: disconnect the circuit connection between the power management module and the battery compartment;

[0013] Step 3: The power management module absorbs electric energy from the energy storage battery to provide electric energy for the load function, and boosts and charges the energy storage capacitor;

[0014] Step 4, after the energy storage capacitor reaches the rated voltage, the energy storage capacitor discharges transiently and at high frequency to one of the opposite electrodes of the metal plate;

[0015] Step 5, stop discharging and connect the circuit between the power management module and the battery compartment.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] (1) Long-term unattended operation, self-cleaning of internal dirt;

[0018] (2) Ensure stable voltage, current and power output throughout the system life cycle;

[0019] (3) The self-cleaning process consumes very little energy and takes a short time, and does not affect the normal operation of the entire system;

[0020] (4) After the scale is crushed, it is discharged from the insulator compartment by convection and does not settle inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall principle diagram of the electrode pair cabin self-cleaning system applied in the low conductivity fluid communication domain is shown;

[0022] Figure 2The topological diagram showing the circuit structure and operation principle of the electrode pair cabin self-cleaning system applied in the low conductivity fluid communication domain;

[0023] In the figure: 1. Insulator cabin; 2. Metal plate cathode; 3. Metal plate anode; 4. Energy storage capacitor; 5. High voltage switch; 6. Electrode output switch. DETAILED DESCRIPTION

[0024] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0025] The present invention proposes a self-cleaning method and system for an electrode pair chamber in a low-conductivity fluid connection domain, which can automatically remove scale deposited or attached on the surface of the electrode pair plates under long-term operation, ensure sufficient contact and reaction between the metal plate surface and the low-conductivity fluid, and output energy to the outside in a long-term, stable and efficient manner.

[0026] First, the overall principle of the electrode pair chamber self-cleaning system applied in a low conductivity fluid communication domain is described. Figure 1 The overall principle of the system is described. Under normal conditions, the metal plate electrodes of the battery compartment (insulator compartment) provide power to the power management module. When the power consumption of the load is met, the power management module charges the energy storage battery with excess power. When the power management module detects that the power output of the battery compartment decreases, it disconnects the battery compartment circuit, absorbs part of the power from the energy storage battery to provide power to the load, and charges the capacitor to the rated voltage value. The capacitor then discharges transiently and at high frequency to the metal plate electrodes in the battery compartment, and then the system returns to normal operation.

[0027] The following is a brief description of the structure and operating principle of the battery cabin: the insulator cabin is made of insulating materials such as engineering plastics, ceramics, glass, epoxy fiberglass, etc. The insulator cabin can be a variety of hollow container shapes. Two vertically placed parallel metal plate pairs facing each other are located inside the insulator cabin. There is a gap between the metal plate pairs. One of the metal plate pairs is chemically more active, that is, more active, such as lithium, magnesium, aluminum, zinc and other metals or their alloys; while the other is more inert, such as stainless steel, copper, silver, platinum, gold and other metals or their alloys. Each metal plate pair has a lead extending out of the insulator cabin at the upper end as a terminal. A lower opening is opened at the lower end of the insulator cabin, and an upper opening is opened on the upper end surface of the insulator cabin. The low-conductivity fluid domain can be various artificially prepared chemical electrolytes, or it can be a fluid closed domain composed of natural river and lake water, groundwater, seawater, rainwater or tap water. The internal and external spaces of the insulator cabin are filled with low-conductivity fluids. An electrochemical reaction occurs between the low-conductivity fluid and the aforementioned metal plate counter-electrodes, generating an electric potential difference between the two metal plate counter-electrodes. Generally, the more active metal plate is the positive electrode and the other is the negative electrode. The two metal plate counter-electrodes output electrical energy to the outside. The power management module receives the low-voltage electrical energy output by the battery compartment, and after voltage boosting, a portion of it is output to the load as a conventional power source. When the load operating power is less than the output power of the battery compartment, the surplus electrical energy is output by the power management module to the energy storage battery for storage. When the load operating power is greater than the output power of the battery compartment, the power management module absorbs energy from the energy storage battery to supplement the insufficient part of the battery compartment for output to the load.

[0028] The above paragraph is the conventional technical part, and the following is a description of the improvements made by this application:

[0029] Under long-term operation, metal ions with higher atomic weights than the metal plate material, acid radicals of various salts, oxides, etc. in the low-conductivity fluid will gradually deposit and adhere to the surface of the metal plate, especially the positive electrode, forming a relatively dense scale layer, which prevents further contact between the low-conductivity fluid and the metal plate counterelectrode, and the output voltage, current, and power decrease relative to the rated value. When the power management module detects that the voltage power attenuation amplitude output by the metal plate counter electrode reaches the design threshold, the switch output from the metal plate counter electrode to the power management module is disconnected, and the power management module absorbs energy from the energy storage battery. While ensuring the load power supply, it boosts and charges the energy storage capacitor. After reaching the rated voltage, the discharge switch is turned on, and the energy storage capacitor discharges at high frequency to one of the metal plate counter electrodes. The skin effect of high-frequency alternating current forms a transient temperature rise on the surface of the metal plate counter electrode. The water in the scale on its surface reaches and exceeds the boiling point and instantly vaporizes, breaking the scale into fine particles and peeling off from the surface of the metal plate counter electrode, diffusing into the low-conductivity fluid in the electrode pair cabin, and diffusing to the outside of the electrode pair cabin with convection, the surface of the metal plate counter electrode is restored to cleanliness, fully contacting with the low-conductivity liquid and further reacting. Then the discharge switch is turned off, and the switch output from the metal plate counter electrode to the power management module is turned on. The power management module no longer charges the energy storage capacitor, and the system returns to the normal operation cycle.

[0030] Figure 2 The conventional technical part of the system (in the dotted box) is shown, which is responsible for the management, storage and use of electric energy. The others are the characteristic parts of the present invention. The insulator cabin 1 contains a metal plate counter electrode, 2 is a metal plate counter electrode cathode, and 3 is a metal plate counter electrode anode. Under normal operating conditions, the electrode output switch 6 is closed, and the metal plate counter electrode cathode 2 and the metal plate counter electrode anode 3 provide electric energy to the power management module. At this time, the high-voltage switch 5 is disconnected. When the power management module detects that the power of the electric energy output by the metal plate counter electrode cathode 2 and the metal plate counter electrode anode 3 decreases, the electrode output switch 6 is disconnected. The power management module absorbs electric energy from the energy storage battery, boosts the voltage, and charges the energy storage capacitor 4. After reaching the rated voltage, the high-voltage switch 5 is closed, and the energy storage capacitor 4 discharges to the metal plate counter electrode anode 3. The skin effect formed by the high-frequency current breaks the scale on its surface. Then the high-voltage switch 5 is disconnected, the electrode output switch 6 is closed, and the system resumes normal operating mode. The entire system is immersed in a low-conductivity fluid.

[0031] According to an embodiment of the present invention, there is provided an electrode pair cabin self-cleaning system for use in a low-conductivity fluid communication domain, comprising: a battery cabin, wherein the metal plate counter electrode provides electrical energy to a power management module; the power management module is used to meet the power consumption of the load and provide excess electrical energy to an energy storage battery, and disconnect the circuit connection with the battery cabin when it detects that the power output of the battery cabin is lower than a preset threshold; the energy storage battery is used to provide electrical energy to the power management module when the battery cabin circuit connection is disconnected, thereby charging the energy storage capacitor; the energy storage capacitor is used to perform transient high-frequency discharge to one of the metal plate counter electrodes in the battery cabin when charged to a rated voltage value.

[0032] In one embodiment, the preset threshold of the electric power may be the minimum power at which the load can maintain stable operation (for example, if the rated operating power of the load is 100W±5%, it can be calculated that the electric power provided to the load cannot be less than 95W).

[0033] According to an embodiment of the present invention, there is provided a method for self-cleaning an electrode pair chamber in a low-conductivity fluid communication domain, the method being performed by the above-mentioned electrode pair chamber self-cleaning system in a low-conductivity fluid communication domain, comprising the following steps:

[0034] Step 1, determine whether the voltage power outputted by the metal plate counter-electrode is lower than a preset threshold value, if yes, go to step 2;

[0035] Step 2: disconnect the circuit connection between the power management module and the battery compartment;

[0036] Step 3: The power management module absorbs electric energy from the energy storage battery to provide electric energy for the load function, and boosts and charges the energy storage capacitor;

[0037] Step 4, after the energy storage capacitor reaches the rated voltage, the energy storage capacitor discharges at high frequency to one of the opposite poles of the metal plate;

[0038] Step 5, stop discharging and connect the circuit between the power management module and the battery compartment.

[0039] Among them, the capacity determination method of the energy storage capacitor is:

[0040] ,

[0041] in, is the magnetic permeability of the metal plate, is the electrical conductivity of the metal plate, is the thickness of the scale, is the equivalent inductance of the current loop from the output of the power management module to the metal plate pair, is the correction factor for scale thickness.

[0042] Method for determining the voltage of the energy storage capacitor:

[0043] ,

[0044] in is the voltage correction factor, is the density of the metal plate, is the specific heat capacity of the metal plate, is the effective temperature rise, and the meanings of other symbols are the same as before. and The experimental system with the same environment and parameter structure is arranged for pre-test acquisition.

[0045] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0046] Although the present invention has been described according to a limited number of embodiments, it will be apparent to those skilled in the art, with the benefit of the above description, that other embodiments may be envisioned within the scope of the invention thus described. In addition, it should be noted that the language used in this specification is primarily selected for readability and instructional purposes, rather than for the purpose of explaining or limiting the subject matter of the present invention.

Claims

1. An electrode pair self-cleaning system for a low-conductivity fluid communication domain, characterized in that: include: A battery compartment, in which the metal plate pairs provide electrical energy to the power management module; A power management module is used to meet the power consumption of the load and provide excess power to the energy storage battery, and disconnect the circuit connection with the battery compartment when it is detected that the power output of the battery compartment is lower than a preset threshold; The energy storage battery is used to provide power to the power management module when disconnected from the battery compartment circuit, so that the power management module can charge the energy storage capacitor while satisfying the load power supply; The energy storage capacitor is used to discharge transiently and at high frequency to one of the metal plate pairs in the battery compartment when it is charged to the rated voltage value.

2. The electrode pair chamber self-cleaning system for use in a low-conductivity fluid communication domain according to claim 1, characterized in that: The preset threshold value of electric power is the minimum power value for stable operation of the load.

3. A method for self-cleaning an electrode pair chamber in a low-conductivity fluid communication domain, characterized in that: The method is performed by the above electrode pair cabin self-cleaning system applied in a low-conductivity fluid communication domain, and comprises the following steps: Step 1, determine whether the voltage power outputted by the metal plate counter-electrode is lower than a preset threshold value, if yes, go to step 2; Step 2: disconnect the circuit connection between the power management module and the battery compartment; Step 3: The power management module absorbs electric energy from the energy storage battery to provide electric energy for the load function, while boosting and charging the energy storage capacitor; Step 4, after the energy storage capacitor reaches the rated voltage, the energy storage capacitor discharges transiently and at high frequency to one of the opposite electrodes of the metal plate; Step 5, stop discharging and connect the circuit between the power management module and the battery compartment.

4. The electrode pair chamber self-cleaning method applied to a low-conductivity fluid communication domain according to claim 3, characterized in that: in, Method for determining the capacity of energy storage capacitor: ， in, is the magnetic permeability of the metal plate, is the electrical conductivity of the metal plate, is the thickness of the fouling, is the loop equivalent inductance, is the correction factor for scale thickness; Method for determining the voltage of the energy storage capacitor: ， in, is the voltage correction factor, is the density of the metal plate, is the specific heat capacity of the metal plate, is the effective temperature rise.

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