Source network load storage device based on local green electricity

Abstract

The invention relates to the technical field of source network load storage, in particular to a source network load storage device based on local green power. The source network load storage device based on the local green power comprises a green power module, a power grid module, a load module and an energy storage module, the green power module carries out power generation work through renewable resources to generate electric energy, and the generated electric energy is accessed to the power grid module; the energy storage module is used for storing excess electric energy under the condition that the capacity of the green power module is excess, and supplying the electric energy to the power grid module under the condition that the capacity of the green power module is insufficient; the power grid module is used for supplying electric energy from the green power module and / or the energy storage module to the load module; and the load module is an electric energy consumption end. Under the condition that supply and demand balance between the green power module and the user side is ensured, the green power module is always in a high-efficiency power generation state, and the green energy utilization rate of the green power module is improved.

Description

Technical Field

[0001] The present invention relates to the field of source-grid-load-storage technology, and in particular to a source-grid-load-storage device based on local green electricity. Background Art

[0002] The traditional green power supply system does not include energy storage modules. The power generated by green power modules (such as hydropower, wind power, photovoltaic power, etc.) is distributed to the user end (load module) through the power grid. Since the power demand at the user end changes in real time, this requires that the power generated by the green power module also be adjusted synchronously with the fluctuation of user demand, so as to achieve a balance between supply and demand.

[0003] When the power demand at the user end is less than the power supplied by the green power module, the supply needs to be reduced, which will cause a large amount of energy loss (for example, for photovoltaic power generation, if the demand for electricity is small under strong sunlight, it is necessary to reduce the output by adjusting the photovoltaic power generation output, resulting in low utilization of the photovoltaic power plant). Summary of the invention

[0004] The purpose of the present invention is to provide a source-grid-load-storage device based on local green electricity. By setting up an energy storage module, the excess electric energy generated by the green electricity module is stored in the energy storage module, and the stored electric energy is supplied to the grid module when the production capacity of the green electricity module is insufficient. Thus, while ensuring the balance between supply and demand between the green electricity module and the user end, the green electricity module is always in a state of high-efficiency power generation, thereby improving the utilization rate of green energy by the green electricity module.

[0005] The present invention provides a source-grid-load-storage device based on local green electricity, comprising a green electricity module, a grid module, a load module and an energy storage module. The green electricity module generates electricity by generating electricity through renewable resources, and the generated electricity is connected to the grid module; the energy storage module is used to store excess electricity when the green electricity module has excess production capacity, and to supply electricity to the grid module when the green electricity module has insufficient production capacity; the grid module is used to supply electricity from the green electricity module and / or the energy storage module to the load module; the load module is the consumption end of electricity.

[0006] Furthermore, the energy storage module stores energy by converting the excess electrical energy into chemical energy, and when the demand of the load module is greater than the supply of the green electricity module, the chemical energy is converted into electrical energy and transmitted to the grid module.

[0007] Further, the energy storage module includes a water electrolysis component, a hydrogen suction component, an oxygen suction component, a hydrogen storage tank, an oxygen storage tank and an electric energy generation component; the renewable resource is solar energy, and the green electricity module is a photovoltaic power generation station; the excess electric energy is connected to the water electrolysis component; the electrolytic cell of the water electrolysis component is divided into a cathode pool and an anode pool by a diaphragm, the cathode pool is sealed by a first pool cover, and the anode pool is sealed by a second pool cover; the air inlet end of the hydrogen suction component is connected to the cathode pool, and the air outlet end of the hydrogen suction component is connected to the hydrogen storage tank; the air inlet end of the oxygen suction component is connected to the anode pool, and the air outlet end of the oxygen suction component is connected to the oxygen storage tank; when the demand of the load module is greater than the supply of the green electricity module, the output end of the hydrogen storage tank and the output end of the oxygen storage tank are both connected to the electric energy generation component, and the electric energy generation component generates electric energy through the connected hydrogen and oxygen and inputs the electric energy into the power grid module.

[0008] Furthermore, the hydrogen suction assembly includes a motor, a hydrogen suction cylinder, a hydrogen suction piston and a first connecting rod; a first crank portion is fixedly arranged on the output shaft of the motor, an end of the first crank portion away from the output shaft is hinged to the first connecting rod, and an end of the first connecting rod away from the first crank portion is hinged to the piston rod of the hydrogen suction piston; a first air inlet and a first air outlet are arranged at one end of the hydrogen suction cylinder, a second air inlet and a second air outlet are arranged at the other end of the hydrogen suction cylinder, and the hydrogen suction piston can move between the first air inlet and the second air inlet; the first air inlet and the second air inlet are both connected to the top of the cathode pool through a pipeline, and a one-way valve is arranged on the pipeline; the first air outlet and the first air outlet are connected to the cathode pool through a pipeline, and a one-way valve is arranged on the pipeline; Both air outlets are connected to the hydrogen storage tank through pipelines, and a one-way valve is provided on the pipelines; the oxygen suction assembly includes an oxygen suction cylinder and an oxygen suction piston, and the piston rod of the oxygen suction piston is fixedly connected to the piston rod of the hydrogen suction piston; a third air inlet and a third air outlet are provided at one end of the oxygen suction cylinder, and a fourth air inlet and a fourth air outlet are provided at the other end of the oxygen suction cylinder, and the oxygen suction piston can move between the third air inlet and the fourth air inlet; the third air inlet and the fourth air inlet are both connected to the top of the anode pool through pipelines, and a one-way valve is provided on the pipelines; the third air outlet and the fourth air outlet are both connected to the hydrogen storage tank through pipelines, and a one-way valve is provided on the pipelines.

[0009] Furthermore, the source-grid-load-storage device also includes an electrolytic water circulation component, which includes a cathode suction cylinder, a cathode suction piston, an anode suction cylinder, and an anode suction piston; the piston rod of the cathode suction piston and the piston rod of the anode suction piston are both fixedly connected to the piston rod of the hydrogen suction piston; a first water inlet pipe and a first water outlet pipe are provided at one end of the cathode suction cylinder, and a second water inlet pipe and a second water outlet pipe are provided at the other end of the cathode suction cylinder, and the cathode suction piston can move between the first water inlet pipe and the second water inlet pipe; the first water inlet pipe and the second water inlet pipe are both connected to a first water inlet main pipe, the first water inlet main pipe is connected to the bottom of the cathode pool, and on the first water inlet pipe and the second water inlet pipe Both are provided with a one-way valve; the first water outlet pipe and the second water outlet pipe are connected to the upper part of the cathode pool through a pipeline, and a one-way valve is provided on the pipeline; a third water inlet pipe and a third water outlet pipe are provided at one end of the anode suction cylinder, and a fourth water inlet pipe and a fourth water outlet pipe are provided at the other end of the anode suction cylinder, and the anode suction piston can move between the third water inlet pipe and the fourth water inlet pipe; the third water inlet pipe and the fourth water inlet pipe are connected to the second water inlet main pipe, the second water inlet main pipe is connected to the bottom of the anode pool, and a one-way valve is provided on the third water inlet pipe and the fourth water inlet pipe; the third water outlet pipe and the fourth water outlet pipe are connected to the upper part of the anode pool through a pipeline, and a one-way valve is provided on the pipeline.

[0010] Further, the water electrolysis component also includes a first scraper and a second scraper, the first scraper is slidably arranged in the cathode pool along the vertical direction and is located on both sides of the cathode plate, and the second scraper is slidably arranged in the anode pool along the vertical direction and is located on both sides of the anode plate; a first impeller is arranged in the first water inlet main pipe, and the axis of the first impeller is horizontal and extends to the outside of the first water inlet main pipe; a second crank portion is fixedly arranged on the section where the axis of the first impeller is located outside the first water inlet main pipe, a second connecting rod is hinged to the end of the second crank portion away from the axis of the first impeller, and the end of the second connecting rod away from the second crank portion is hinged to the first scraper; a second impeller is arranged in the second water inlet main pipe, and the axis of the second impeller is horizontal and extends to the outside of the second water inlet main pipe; a third crank portion is fixedly arranged on the section where the axis of the second impeller is located outside the second water inlet main pipe, a third connecting rod is hinged to the end of the third crank portion away from the axis of the second impeller, and the end of the third connecting rod away from the third crank portion is hinged to the second scraper.

[0011] Furthermore, the source-grid-load storage device also includes a pole plate adjustment assembly, which includes a sliding rod, a seesaw, a first shaft, a second shaft, a rotating drum, a pendulum and a connecting rod; the first shaft and the second shaft are both vertically rotatably arranged on a bracket for mounting the motor, a first bevel gear is also fixedly arranged on the output shaft, and a second bevel gear meshing with the first bevel gear is fixedly arranged on the first shaft; a first gear is also fixedly arranged on the first shaft, and a second gear meshing with the first gear is fixedly arranged on the second shaft; an extension portion extends radially from the top of the second shaft, and an end of the extension portion away from the second shaft is hinged to the end of the hammer handle of the pendulum; the rotating drum is slidably sleeved on the first shaft. On the two-axis rod, the middle part of the hammer handle is hinged to the connecting rod, and the other end of the connecting rod is hinged to the rotating drum; the middle part of the seesaw is rotatably arranged on the bracket, one end of the seesaw is provided with a sleeve portion and the other end is provided with an abutment portion; a first adjusting rod is provided on the cathode plate, and a second adjusting rod is provided on the anode plate, and the first adjusting rod and the second adjusting rod are fixedly connected; the first adjusting rod is slidably inserted in the first pool cover along the vertical direction, and the second adjusting rod is slidably inserted in the second pool cover along the vertical direction; one end of the sliding rod is hinged to the first adjusting rod and the other end is slidably inserted in the sleeve portion; an abutment plate is also provided at the lower part of the rotating drum, and the upper surface of the abutment plate abuts against the lower surface of the abutment portion.

[0012] Furthermore, a first supporting platform is fixedly provided above the first pool cover where the first adjusting rod is located, and a second supporting platform is fixedly provided above the second pool cover where the second adjusting rod is located; a first compression spring is provided between the first supporting platform and the first pool cover, and a second compression spring is provided between the second supporting platform and the second pool cover.

[0013] Furthermore, a first corrugated pipe is arranged between the first support platform and the first pool cover, and both ends of the first corrugated pipe are respectively connected to the first support platform and the first pool cover in an airtight manner; a second corrugated pipe is arranged between the second support platform and the second pool cover, and both ends of the second corrugated pipe are respectively connected to the second support platform and the second pool cover in an airtight manner.

[0014] Furthermore, the source-grid-load-storage device also includes a water replenishment tank, which is connected to the cathode tank through a first water replenishment pipe, and the water replenishment tank is connected to the anode tank through a second water replenishment pipe; a first float valve is connected to the first water replenishment pipe, and a second float valve is connected to the second water replenishment pipe, the float of the first float valve floats in the electrolyzed water of the cathode tank, and the float of the second float valve floats in the electrolyzed water of the anode tank; when the electrolyzed water in the cathode tank is lower than a first preset liquid level, the first float valve connects the first water replenishment pipe, and when the electrolyzed water in the cathode tank is higher than a second preset liquid level, the first float valve blocks the first water replenishment pipe; when the electrolyzed water in the anode tank is lower than the first preset liquid level, the second float valve connects the second water replenishment pipe, and when the electrolyzed water in the anode tank is higher than the second preset liquid level, the second float valve blocks the second water replenishment pipe.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. A source-grid-load-storage device based on local green electricity provided by an embodiment of the present invention can ensure that the green electricity module is always in a state of high-efficiency power generation while ensuring the balance between supply and demand between the green electricity module and the user end, thereby improving the utilization rate of green energy by the green electricity module and reducing energy abandonment; by providing a water replenishment tank, a first water replenishment pipe, a second water replenishment pipe, a first float valve and a second float valve, water can be replenished to the cathode tank and the anode tank in time during the process of electrolyte being consumed by the water electrolysis reaction, thereby maintaining the concentration of the electrolyte; 2. An embodiment of the present invention provides a source-grid-load-storage device based on local green electricity. During the operation of the motor, the cathode suction cylinder synchronously sucks and transports the electrolyte in the cathode pool, and the anode suction cylinder synchronously sucks and transports the electrolyte in the anode pool; during the electrolyte suction process, the electrolyte is transported to the outside for circulation, and can be effectively cooled in the circulation pipeline, thereby effectively avoiding heat accumulation in the cathode pool and the anode pool, which is beneficial to ensuring the normal progress of the water electrolysis reaction; in addition, the aforementioned electrolyte suction process is also beneficial to timely replenishing the water in the cathode pool and the anode pool with the original The electrolyte is mixed evenly, thereby avoiding uneven electrolyte concentration in the cathode pool and the anode pool; in the process of the cathode suction cylinder sucking the electrolyte in the cathode pool, the sucked electrolyte can drive the impeller to rotate; in the process of the impeller rotating, the second crank part drives the second connecting rod, which can make the first scraper reciprocate in the cathode pool in a vertical direction. Then, the first scraper can effectively scrape off the hydrogen bubbles adhered to the cathode plate generated by the electrolysis of water, which can avoid the reduction of the effective contact area between the cathode plate and the electrolyte due to the bubbles adhering to the surface of the cathode plate, thereby ensuring the normal progress of the water electrolysis reaction; 3. An embodiment of the present invention provides a source-grid-load-storage device based on local green electricity. When the power of excess electric energy is large, the rate of producing hydrogen and oxygen by electrolyzing water is faster. Accordingly, the motor speed increases to drive the hydrogen suction cylinder and the oxygen suction cylinder to pump air at a higher frequency. As the motor speed increases, the speed of the second shaft increases, and the centrifugal force causes the pendulum to swing upward, and the upward swing of the pendulum pulls the rotating drum upward, and then the abutment plate pushes the abutment part upward, so that the slide bar presses the first adjustment bar downward under the action of the seesaw. As a result, the cathode plate and the anode plate move downward, and the part of the cathode plate and the anode plate immersed in the electrolyte increases, which effectively reduces the current density, so that when the input current increases, the current density is always maintained in an appropriate range, which is conducive to the efficient electrolysis of water reaction and the protection of the cathode plate and the anode plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 A structural block diagram of a source-grid-load-storage device based on local green electricity drawn according to an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of an energy storage module drawn according to an embodiment of the present invention; Figure 3 Another three-dimensional structural schematic diagram of an energy storage module drawn according to an embodiment of the present invention; Figure 4 A cross-sectional view of an energy storage module drawn according to an embodiment of the present invention; Figure 5 Based on Figure 4 A partial magnified view of the drawn A area; Figure 6 Another cross-sectional view of an energy storage module drawn according to an embodiment of the present invention; Figure 7 Another cross-sectional view of an energy storage module drawn according to an embodiment of the present invention; Figure 8 Based on Figure 7 A partial cross-sectional view of a plate adjustment assembly is drawn; Fig. 9 This is a gas-liquid flow diagram of an energy storage module drawn according to an embodiment of the present invention.

[0017] Marks and corresponding parts names in the attached drawings: 11-diaphragm; 12-cathode pool; 13-anode pool; 14-first pool cover; 15-second pool cover; 16-first scraper; 17-second scraper; 18-cathode plate; 181-first adjustment rod; 182-first support platform; 183-first compression spring; 184-first bellows; 19-anode plate; 191-second adjustment rod; 192-second support platform; 193-second compression spring; 194-second bellows; 21-motor; 211-output shaft; 2 2-hydrogen suction cylinder; 221-first air inlet; 222-first air outlet; 223-second air inlet; 224-second air outlet; 23-hydrogen suction piston; 24-first connecting rod; 25-first crank portion; 31-oxygen suction cylinder; 311-third air inlet; 312-third air outlet; 313-fourth air inlet; 314-fourth air outlet; 32-oxygen suction piston; 4-hydrogen storage tank; 5-oxygen storage tank; 61-cathode suction cylinder; 611-first water inlet pipe; 612-first water outlet pipe; 613-second water inlet pipe; 614-second water outlet pipe; 615-first water inlet pipe; 616-first impeller; 617-second crank; 618-second connecting rod; 62-cathode suction piston; 63-anode suction cylinder; 631-third water inlet pipe; 632-third water outlet pipe; 633-fourth water inlet pipe; 634-fourth water outlet pipe; 635-second water inlet pipe; 636-second impeller ;637-third crank portion;638-third connecting rod;64-anode suction piston;71-slide rod;72-rocker;721-sleeve portion;722-abutment portion;73-first shaft rod;731-second bevel gear;732-first gear;74-second shaft rod;741-second gear;742-extension portion;75-rotating drum;751-abutment plate;76-pendulum;761-hammer handle;77-connecting rod;78-first bevel gear;8-bracket. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0019] The traditional green power supply system does not include energy storage modules. The power generated by green power modules (such as hydropower, wind power, photovoltaic power, etc.) is distributed to the user end (load module) through the power grid. Since the power demand at the user end changes in real time, this requires that the power generated by the green power module also be adjusted synchronously with the fluctuation of user demand, so as to achieve a balance between supply and demand.

[0020] When the power demand at the user end is less than the power supplied by the green power module, the supply needs to be reduced, which will cause a large amount of energy loss (for example, for photovoltaic power generation, if the demand for electricity is small under strong sunlight, it is necessary to reduce the output by adjusting the photovoltaic power generation output, resulting in low utilization of the photovoltaic power plant).

[0021] To this end, the present invention proposes a source-grid-load-storage device based on local green electricity. When the electric energy supplied by the green electricity module is greater than the electric energy required by the user end, the energy storage module is used to transmit the excess electric energy to the energy storage module for storage; when the electric energy supplied by the green electricity module is less than the electric energy required by the user end, the electric energy stored in the energy storage module is released and supplied to the user end. In this way, while ensuring the balance between supply and demand between the green electricity module and the user end, the green electricity module is always in a state of high-efficiency power generation, thereby improving the utilization rate of green energy by the green electricity module.

[0022] Example 1 like Figures 1 to 9 As shown (for Figure 3 In order to facilitate the display of the internal structure of the water electrolysis assembly, the water electrolysis assembly is cut vertically, and the cut surface passes through the first adjustment rod and the second adjustment rod. Figure 4 , the section plane is vertical and passes through the first adjustment rod and the second adjustment rod; Figure 6 , the section plane is vertical and passes through the first impeller and the second impeller; Figure 7 , the section plane passes through the axis of the first shaft and the axis of the second shaft), this embodiment provides a source-grid-load-storage device based on local green electricity, including a green electricity module, a grid module, a load module and an energy storage module, specifically: The green power module generates electricity through renewable resources, and the generated electricity is connected to the power grid module; The energy storage module is used to store excess electric energy when the green power module has excess production capacity, and to supply electric energy to the power grid module when the green power module has insufficient production capacity; The grid module is used to supply the electric energy from the green power module and / or the energy storage module to the load module; the load module is the consumption end of the electric energy.

[0023] Based on this, the source-grid-load-storage device provided in the embodiment of the present invention can ensure the supply and demand balance between the green power module and the user end, so that the green power module is always in a state of high-efficiency power generation, improve the utilization rate of green energy by the green power module, and reduce energy abandonment.

[0024] More specifically, the energy storage module stores energy by converting the excess electrical energy into chemical energy, and when the demand of the load module is greater than the supply of the green power module, the chemical energy is converted into electrical energy and transmitted to the grid module.

[0025] The energy storage module includes a water electrolysis component, a hydrogen suction component, an oxygen suction component, a hydrogen storage tank 4, an oxygen storage tank 5 and an electric energy generation component; The renewable resource is solar energy, and the green electricity module is a photovoltaic power generation station; the excess electric energy is connected to the water electrolysis component; the electrolytic cell of the water electrolysis component is divided into a cathode pool 12 and an anode pool 13 by a diaphragm 11, the cathode pool 12 is sealed by a first pool cover 14, and the anode pool 13 is sealed by a second pool cover 15; The air inlet end of the hydrogen suction assembly is connected to the top of the cathode pool 12, and the air outlet end of the hydrogen suction assembly is connected to the hydrogen storage tank 4; the air inlet end of the oxygen suction assembly is connected to the top of the anode pool 13, and the air outlet end of the oxygen suction assembly is connected to the oxygen storage tank 5; When the demand of the load module is greater than the supply of the green electricity module, the output end of the hydrogen storage tank 4 and the output end of the oxygen storage tank 5 are both connected to the power generation component, and the power generation component generates electricity through the input hydrogen and oxygen and inputs the electricity to the power grid module.

[0026] Accordingly, the embodiment of the present invention utilizes excess electrical energy to electrolyze water to produce hydrogen, and can convert the excess electrical energy into chemical energy of hydrogen and oxygen for storage; by separately collecting and storing hydrogen and oxygen, the risk of explosion caused by accidental mixing of the prepared hydrogen and oxygen can be avoided.

[0027] It should be understood that in this embodiment, the power generation component (not shown in the drawings) can be a related device in the prior art that can generate electricity using hydrogen and oxygen (such as a fuel cell), which will not be described in detail here.

[0028] More specifically, the hydrogen suction assembly includes a motor 21, a hydrogen suction cylinder 22, a hydrogen suction piston 23 and a first connecting rod 24; A first crank portion 25 is fixedly disposed on the output shaft 211 of the motor 21, one end of the first crank portion 25 away from the output shaft 211 is hinged to the first connecting rod 24, and one end of the first connecting rod 24 away from the first crank portion 25 is hinged to the piston rod of the hydrogen suction piston 23; A first air inlet 221 and a first air outlet 222 are provided at one end of the hydrogen suction cylinder 22, and a second air inlet 223 and a second air outlet 224 are provided at the other end of the hydrogen suction cylinder 22. The hydrogen suction piston 23 can move between the first air inlet 221 and the second air inlet 223; preferably, the hydrogen suction piston 23 does not block the first air outlet 222 and the second air outlet 224 during the movement between the first air inlet 221 and the second air inlet 223; The first air inlet 221 and the second air inlet 223 are both connected to the cathode pool 12 through pipelines, and a one-way valve is provided on the pipelines; the first air outlet 222 and the second air outlet 224 are both connected to the hydrogen storage tank 4 through pipelines, and a one-way valve is provided on the pipelines; The oxygen suction assembly includes an oxygen suction cylinder 31 and an oxygen suction piston 32, and the piston rod of the oxygen suction piston 32 is fixedly connected to the piston rod of the hydrogen suction piston 23; A third air inlet 311 and a third air outlet 312 are provided at one end of the oxygen suction cylinder 31, and a fourth air inlet 313 and a fourth air outlet 314 are provided at the other end of the oxygen suction cylinder 31, and the oxygen suction piston 32 can move between the third air inlet 311 and the fourth air inlet 313; preferably, the oxygen suction piston 32 does not block the third air outlet 312 and the fourth air outlet 314 during the movement between the third air inlet 311 and the fourth air inlet 313; The third air inlet 311 and the fourth air inlet 313 are both connected to the top of the anode cell 13 through pipelines, and a one-way valve is provided on the pipelines; the third air outlet 312 and the fourth air outlet 314 are both connected to the hydrogen storage tank 4 through pipelines, and a one-way valve is provided on the pipelines.

[0029] Accordingly, in the source-grid-load-storage device provided in this embodiment, the first crank part 25, the first connecting rod 24, the hydrogen suction cylinder 22 and the piston rod of the hydrogen suction piston 23 form a crank slider mechanism, and the first crank part 25 fixedly arranged on the output shaft 211 of the motor 21 drives the first connecting rod 24, so that the piston rod of the hydrogen suction piston 23 can push the hydrogen suction piston 23 to reciprocate between the first air inlet 221 and the second air inlet 223. Please refer to Fig. 9 Under the action of the one-way valve, during the downward movement of the hydrogen suction piston 23, the first air inlet 221 draws hydrogen from the cathode pool 12 and the second air outlet 224 delivers hydrogen to the hydrogen storage tank 4; during the upward movement of the hydrogen suction piston 23, the second air inlet 223 draws hydrogen from the cathode pool 12 and the first air outlet 222 delivers hydrogen to the hydrogen storage tank 4; since the piston rod of the oxygen suction piston 32 and the piston rod of the hydrogen suction piston 23 are fixedly connected, during the operation of the motor 21, the oxygen suction cylinder 31 also synchronously performs continuous suction and delivery of oxygen (the principle is similar to the hydrogen suction process and will not be repeated); thus, through the operation of the motor 21, hydrogen can be continuously drawn from the cathode pool 12 and oxygen can be drawn from the anode pool 13, thereby ensuring the stable and efficient electrolysis of water.

[0030] Preferably, the motor 21 is also powered by the excess electric energy of the green power module, so that when the excess electric energy is connected to the water electrolysis component to perform the water electrolysis reaction, the motor 21 is also started, and then when the water is electrolyzed to produce hydrogen and oxygen, the hydrogen suction cylinder 22 and the oxygen suction cylinder 31 are started to suck the generated hydrogen and oxygen, and there is no need to control the start and stop of the motor 21 separately. Preferably, the speed of the motor 21 is positively correlated with the power of the excess electric energy, and then when the excess electric energy power is large so that the rate of hydrogen and oxygen produced by water electrolysis is fast, the suction frequency of the hydrogen suction cylinder 22 and the oxygen suction cylinder 31 is faster, so that the suction speed of the hydrogen suction cylinder 22 can match the hydrogen production speed, and the suction speed of the oxygen suction cylinder 31 can match the oxygen production speed, so that the gas pressure of the cathode pool 12 and the anode pool 13 can be kept stable.

[0031] Preferably, the source-grid-load-storage device further comprises a water replenishment pool, which is connected to the cathode pool 12 via a first water replenishment pipe, and is connected to the anode pool 13 via a second water replenishment pipe; A first float valve is connected to the first water supply pipe, and a second float valve is connected to the second water supply pipe. The float of the first float valve floats in the electrolyzed water of the cathode pool 12, and the float of the second float valve floats in the electrolyzed water of the anode pool 13. When the electrolyzed water in the cathode pool 12 is lower than a first preset liquid level, the first float valve connects the first water supply pipe, and when the electrolyzed water in the cathode pool 12 is higher than a second preset liquid level, the first float valve blocks the first water supply pipe; When the electrolyzed water in the anode pool 13 is lower than the first preset liquid level, the second float valve connects the second water supply pipe. When the electrolyzed water in the anode pool 13 is higher than the second preset liquid level, the second float valve blocks the second water supply pipe.

[0032] Accordingly, by setting up a water replenishment tank, a first water replenishment pipe, a second water replenishment pipe, a first float valve and a second float valve (the structures of which are not yet known and are not shown in the accompanying drawings), water can be replenished to the cathode pool 12 and the anode pool 13 in time during the process of electrolyte being consumed by the water electrolysis reaction, thereby maintaining the concentration of the electrolyte.

[0033] Example 2 like Figures 2 to 9 As shown, this embodiment is based on Embodiment 1, except that, in this embodiment: The source-grid-load-storage device further includes an electrolytic water circulation assembly, which includes a cathode suction cylinder 61, a cathode suction piston 62, an anode suction cylinder 63, and an anode suction piston 64; the piston rod of the cathode suction piston 62 and the piston rod of the anode suction piston 64 are both fixedly connected to the piston rod of the hydrogen suction piston 23; A first water inlet pipe 611 and a first water outlet pipe 612 are provided at one end of the cathode suction cylinder 61, and a second water inlet pipe 613 and a second water outlet pipe 614 are provided at the other end of the cathode suction cylinder 61. The cathode suction piston 62 can move between the first water inlet pipe 611 and the second water inlet pipe 613; preferably, the cathode suction piston 62 does not block the first water outlet pipe 612 and the second water outlet pipe 614 during the movement between the first water inlet pipe 611 and the second water inlet pipe 613; The first water inlet pipe 611 and the second water inlet pipe 613 are both connected to the first water inlet main pipe 615, the first water inlet main pipe 615 is connected to the bottom of the cathode pool 12, and a one-way valve is provided on the first water inlet pipe 611 and the second water inlet pipe 613; the first water outlet pipe 612 and the second water outlet pipe 614 are both connected to the upper part of the cathode pool 12 through pipelines, and a one-way valve is provided on the pipelines; A third water inlet pipe 631 and a third water outlet pipe 632 are provided at one end of the anode suction cylinder 63, and a fourth water inlet pipe 633 and a fourth water outlet pipe 634 are provided at the other end of the anode suction cylinder 63, and the anode suction piston 64 can move between the third water inlet pipe 631 and the fourth water inlet pipe 633; ​​preferably, the anode suction piston 64 does not block the third water outlet pipe 632 and the fourth water outlet pipe 634 during the movement between the third water inlet pipe 631 and the fourth water inlet pipe 633; The third water inlet pipe 631 and the fourth water inlet pipe 633 are both connected to the second water inlet main pipe 635, and the second water inlet main pipe 635 is connected to the bottom of the anode pool 13, and a one-way valve is provided on the third water inlet pipe 631 and the fourth water inlet pipe 633; ​​the third water outlet pipe 632 and the fourth water outlet pipe 634 are both connected to the upper part of the anode pool 13 through pipelines, and a one-way valve is provided on the pipelines.

[0034] Accordingly, during the operation of the motor 21, the cathode suction cylinder 61 synchronously pumps and transports the electrolyte in the cathode pool 12 (the principle is similar to the hydrogen suction process and will not be repeated), and the anode suction cylinder 63 synchronously pumps and transports the electrolyte in the anode pool 13 (the principle is similar to the hydrogen suction process and will not be repeated); during the electrolyte suction process, the electrolyte is transported to the outside for circulation and can be effectively cooled in the circulation pipeline, thereby effectively avoiding heat accumulation in the cathode pool 12 and the anode pool 13, which is beneficial to ensure the normal progress of the water electrolysis reaction; in addition, the aforementioned electrolyte suction process is also beneficial to timely mixing the water added to the cathode pool 12 and the anode pool 13 with the original electrolyte, thereby avoiding uneven electrolyte concentration in the cathode pool 12 and the anode pool 13; and thus helping to maintain the efficient progress of the water electrolysis reaction.

[0035] Preferably, Figure 3 , Figure 4 , Figure 6 As shown, the water electrolysis assembly further includes a first scraper 16 and a second scraper 17, wherein the first scraper 16 is slidably disposed in the cathode pool 12 along a vertical direction and is located on both sides of the cathode plate 18, and the second scraper 17 is slidably disposed in the anode pool 13 along a vertical direction and is located on both sides of the anode plate 19; A first impeller 616 is disposed in the first water inlet main pipe 615, and the shaft of the first impeller 616 is horizontal and extends to the outside of the first water inlet main pipe 615; a second crank portion 617 is fixedly disposed on the section of the shaft of the first impeller 616 located outside the first water inlet main pipe 615, and a second connecting rod 618 is hinged to one end of the second crank portion 617 away from the shaft of the first impeller 616, and one end of the second connecting rod 618 away from the second crank portion 617 is hinged to the first scraper 16; A second impeller 636 is arranged in the second water inlet main pipe 635, and the axis of the second impeller 636 is horizontal and extends to the outside of the second water inlet main pipe 635; a third crank portion 637 is fixedly arranged on the section of the axis of the second impeller 636 located outside the second water inlet main pipe 635, and a third connecting rod 638 is hinged at one end of the third crank portion 637 away from the axis of the second impeller 636, and one end of the third connecting rod 638 away from the third crank portion 637 is hinged to the second scraper 17.

[0036] Based on this, in the process of the cathode suction cylinder 61 sucking the electrolyte in the cathode cell 12, the sucked electrolyte can drive the impeller to rotate; since the cathode cell 12, the second crank portion 617, the second connecting rod 618 and the first scraper 16 form a crank slider mechanism, in the process of the impeller rotating, the second crank portion 617 drives the second connecting rod 618, so that the first scraper 16 can reciprocate in the cathode cell 12 along the vertical direction. Then, the first scraper 16 can effectively scrape off the hydrogen bubbles adhered to the cathode plate 18 produced by the electrolysis of water, and can avoid the reduction of the effective contact area between the cathode plate 18 and the electrolyte due to the bubbles adhering to the surface of the cathode plate 18, thereby ensuring the normal progress of the electrolysis reaction of water (the process of the second scraper 17 in the anode cell 13 scraping off the oxygen bubbles adhered to the anode plate 19 is the same and will not be repeated).

[0037] Example 3 like Figures 2 to 8 As shown, this embodiment is based on Embodiment 1, except that, in this embodiment: The source-grid-load-storage device further includes a plate adjustment assembly, which includes a slide bar 71, a seesaw 72, a first shaft 73, a second shaft 74, a rotating drum 75, a pendulum 76 and a connecting rod 77; The first shaft 73 and the second shaft 74 are both vertically rotatably mounted on the bracket 8 on which the motor 21 is mounted. A first bevel gear 78 is also fixedly mounted on the output shaft 211, and a second bevel gear 731 meshing with the first bevel gear 78 is fixedly mounted on the first shaft 73; a first gear 732 is also fixedly mounted on the first shaft 73, and a second gear 741 meshing with the first gear 732 is fixedly mounted on the second shaft 74; An extension portion 742 is radially extended from the top of the second shaft rod 74, and one end of the extension portion 742 away from the second shaft rod 74 is hinged to the end of the hammer handle 761 of the pendulum 76; the rotating cylinder 75 is slidably sleeved on the second shaft rod 74, the middle part of the hammer handle 761 is hinged to the connecting rod 77, and the other end of the connecting rod 77 is hinged to the rotating cylinder 75; The middle part of the seesaw 72 is rotatably arranged on the bracket 8, one end of the seesaw 72 is provided with a sleeve portion 721 and the other end is provided with an abutment portion 722; a first adjustment rod 181 is provided on the cathode plate 18, and a second adjustment rod 191 is provided on the anode plate 19, and the first adjustment rod 181 and the second adjustment rod 191 are fixedly connected; the first adjustment rod 181 is slidably inserted in the first pool cover 14 along the vertical direction, and the second adjustment rod 191 is slidably inserted in the second pool cover 15 along the vertical direction; one end of the sliding rod 71 is hinged to the first adjustment rod 181 and the other end is slidably inserted in the sleeve portion 721; A contact plate 751 is further provided at the lower portion of the rotating drum 75 , and the upper surface of the contact plate 751 contacts the lower surface of the contact portion 722 .

[0038] Accordingly, when the power of the excess electric energy is large, the rate of generating hydrogen and oxygen by electrolysis of water is faster, and accordingly, the speed of the motor 21 increases to drive the hydrogen suction cylinder 22 and the oxygen suction cylinder 31 to pump gas at a higher frequency; as the speed of the motor 21 increases, the speed of the second shaft 74 increases, and the centrifugal force causes the pendulum 76 to swing upward (please compare Figure 5 and Figure 8 , Figure 5 The middle pendulum swings upward at 76, and we get Figure 8As shown in the scenario, the pendulum 76 swings upward to pull the rotating drum 75 upward, and then the abutment plate 751 pushes the abutment portion 722 upward, so that the slide bar 71 presses the first adjustment rod 181 downward under the action of the rocker 72; thereby, the cathode plate 18 and the anode plate 19 move downward, and the portion of the cathode plate 18 and the anode plate 19 immersed in the electrolyte increases, effectively reducing the current density (for photovoltaic power generation, the voltage is basically stable, and the power increase of the excess electric energy is mainly reflected in the increase of current, which increases the current density. Excessive current density will cause overheating of the electrode surface, thereby accelerating the damage of the electrode. In addition, too high current density will cause an increase in overvoltage, thereby reducing the electrolysis efficiency), so that when the input current increases, the current density is always maintained in a suitable range, which is conducive to the efficient electrolysis of water reaction and the protection of the cathode plate 18 and the anode plate 19.

[0039] Preferably, a first support platform 182 is fixedly disposed above the first pool cover 14 where the first adjustment rod 181 is located, and a second support platform 192 is fixedly disposed above the second pool cover 15 where the second adjustment rod 191 is located; A first compression spring 183 is provided between the first support platform 182 and the first pool cover 14 , and a second compression spring 193 is provided between the second support platform 192 and the second pool cover 15 .

[0040] Accordingly, when the excess current is large, the first adjusting rod 181 is pressed downward to cause the cathode plate 18 and the anode plate 19 to move downward, and at this time the first compression spring 183 and the second compression spring 193 are compressed; when the excess current decreases, the pendulum 76 swings downward and causes the rotating drum 75 to move downward along the second shaft 74, and the first adjusting rod 181 moves upward under the action of the first compression spring 183, thereby pulling the cathode plate 18 upward (the same applies to the anode plate 19, which will not be repeated here), thereby ensuring that the depth of the cathode plate 18 and the anode plate 19 immersed in the electrolyte is positively correlated with the power of the excess electric energy, that is, the current density of the water electrolysis reaction is always maintained in an appropriate range, which is beneficial to the efficient conduct of the water electrolysis reaction and is beneficial to the protection of the cathode plate 18 and the anode plate 19.

[0041] More preferably, a first bellows 184 is provided between the first support platform 182 and the first pool cover 14, and both ends of the first bellows 184 are respectively connected to the first support platform 182 and the first pool cover 14 in an airtight manner; A second bellows 194 is provided between the second support platform 192 and the second pool cover 15 , and two ends of the second bellows 194 are respectively connected to the second support platform 192 and the second pool cover 15 in an airtight manner.

[0042] Therefore, even if hydrogen overflows along the peripheral wall of the first adjusting rod 181, it still cannot leak out due to the sealing effect of the first bellows 184 (similarly, oxygen cannot leak out). Thus, hydrogen is prevented from leaking out along with the sliding of the first adjusting rod 181, and oxygen is prevented from leaking out along with the sliding of the second adjusting rod 191, thereby ensuring that the gas environment at the location of the source-grid-load-storage device is not affected, and more importantly, avoiding the risk of explosion caused by the leakage and mixing of hydrogen and oxygen.

[0043] It should be understood that, in the present application, "rotational setting" means that the two can only rotate relative to each other, for example, the rotational setting of the hole and the shaft rod can achieve the limitation of axial relative movement by setting a shoulder on the shaft and a limit groove in the hole; the terms "sliding setting" and "sliding insertion" mean that the two can only slide relative to each other, such as dovetail grooves, T-slots and other structures; the term "sliding sleeve" means that one is sleeved on the outside of the other, and the two can rotate relative to each other and can move relative to each other in the axial direction.

[0044] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A source-grid-load-storage device based on local green electricity, comprising a green electricity module, a grid module, a load module and an energy storage module, characterized in that: The green power module generates electricity through renewable resources, and the generated electricity is connected to the power grid module; The energy storage module is used to store excess electric energy when the green power module has excess production capacity, and to supply electric energy to the power grid module when the green power module has insufficient production capacity; The grid module is used to supply the electric energy from the green power module and / or the energy storage module to the load module; the load module is the consumption end of the electric energy.

2. The source-grid-load-storage device according to claim 1, characterized in that: The energy storage module stores energy by converting the excess electrical energy into chemical energy, and when the demand of the load module is greater than the supply of the green electricity module, the chemical energy is converted into electrical energy and transmitted to the grid module.

3. The source-grid-load-storage device according to claim 2, characterized in that: The energy storage module comprises a water electrolysis component, a hydrogen suction component, an oxygen suction component, a hydrogen storage tank (4), an oxygen storage tank (5) and an electric energy generation component; The renewable resource is solar energy, and the green electricity module is a photovoltaic power generation station; the excess electric energy is connected to the water electrolysis component; the electrolytic cell of the water electrolysis component is divided into a cathode pool (12) and an anode pool (13) by a diaphragm (11); the cathode pool (12) is sealed by a first pool cover (14), and the anode pool (13) is sealed by a second pool cover (15); The air inlet end of the hydrogen suction assembly is connected to the top of the cathode pool (12), and the air outlet end of the hydrogen suction assembly is connected to the hydrogen storage tank (4); the air inlet end of the oxygen suction assembly is connected to the top of the anode pool (13), and the air outlet end of the oxygen suction assembly is connected to the oxygen storage tank (5); When the demand of the load module is greater than the supply of the green electricity module, the output end of the hydrogen storage tank (4) and the output end of the oxygen storage tank (5) are both connected to the power generation component, and the power generation component generates electricity through the input hydrogen and oxygen and inputs the electricity to the power grid module.

4. The source-grid-load-storage device according to claim 3, characterized in that: The hydrogen suction assembly comprises a motor (21), a hydrogen suction cylinder (22), a hydrogen suction piston (23) and a first connecting rod (24); A first crank portion (25) is fixedly arranged on the output shaft (211) of the motor (21); one end of the first crank portion (25) away from the output shaft (211) is hinged to the first connecting rod (24); and one end of the first connecting rod (24) away from the first crank portion (25) is hinged to the piston rod of the hydrogen suction piston (23); A first air inlet (221) and a first air outlet (222) are provided at one end of the hydrogen suction cylinder (22), and a second air inlet (223) and a second air outlet (224) are provided at the other end of the hydrogen suction cylinder (22), and the hydrogen suction piston (23) is capable of moving between the first air inlet (221) and the second air inlet (223); The first air inlet (221) and the second air inlet (223) are both connected to the top of the cathode pool (12) through a pipeline, and a one-way valve is provided on the pipeline; the first air outlet (222) and the second air outlet (224) are both connected to the hydrogen storage tank (4) through a pipeline, and a one-way valve is provided on the pipeline; The oxygen suction assembly comprises an oxygen suction cylinder (31) and an oxygen suction piston (32), and the piston rod of the oxygen suction piston (32) is fixedly connected to the piston rod of the hydrogen suction piston (23); A third air inlet (311) and a third air outlet (312) are provided at one end of the oxygen suction cylinder (31), and a fourth air inlet (313) and a fourth air outlet (314) are provided at the other end of the oxygen suction cylinder (31), and the oxygen suction piston (32) is capable of moving between the third air inlet (311) and the fourth air inlet (313); The third air inlet (311) and the fourth air inlet (313) are both connected to the top of the anode cell (13) through a pipeline, and a one-way valve is provided on the pipeline; the third air outlet (312) and the fourth air outlet (314) are both connected to the hydrogen storage tank (4) through a pipeline, and a one-way valve is provided on the pipeline.

5. The source-grid-load-storage device according to claim 4, characterized in that: The source-grid-load-storage device further comprises an electrolytic water circulation assembly, which comprises a cathode suction cylinder (61), a cathode suction piston (62), an anode suction cylinder (63), and an anode suction piston (64); the piston rod of the cathode suction piston (62) and the piston rod of the anode suction piston (64) are both fixedly connected to the piston rod of the hydrogen suction piston (23); A first water inlet pipe (611) and a first water outlet pipe (612) are provided at one end of the cathode suction cylinder (61), and a second water inlet pipe (613) and a second water outlet pipe (614) are provided at the other end of the cathode suction cylinder (61), and the cathode suction piston (62) is capable of moving between the first water inlet pipe (611) and the second water inlet pipe (613); The first water inlet pipe (611) and the second water inlet pipe (613) are both connected to a first water inlet main pipe (615), the first water inlet main pipe (615) is connected to the bottom of the cathode pool (12), and a one-way valve is provided on the first water inlet pipe (611) and the second water inlet pipe (613); the first water outlet pipe (612) and the second water outlet pipe (614) are both connected to the upper part of the cathode pool (12) through pipelines, and a one-way valve is provided on the pipelines; A third water inlet pipe (631) and a third water outlet pipe (632) are provided at one end of the anode suction cylinder (63), and a fourth water inlet pipe (633) and a fourth water outlet pipe (634) are provided at the other end of the anode suction cylinder (63), and the anode suction piston (64) is capable of moving between the third water inlet pipe (631) and the fourth water inlet pipe (633); The third water inlet pipe (631) and the fourth water inlet pipe (633) are both connected to the second water inlet main pipe (635), the second water inlet main pipe (635) is connected to the bottom of the anode pool (13), and a one-way valve is provided on the third water inlet pipe (631) and the fourth water inlet pipe (633); the third water outlet pipe (632) and the fourth water outlet pipe (634) are both connected to the upper part of the anode pool (13) through pipelines, and a one-way valve is provided on the pipelines.

6. The source-grid-load-storage device according to claim 5, characterized in that: The water electrolysis assembly further comprises a first scraper (16) and a second scraper (17), wherein the first scraper (16) is slidably disposed in the cathode pool (12) along a vertical direction and is located on both sides of the cathode plate (18), and the second scraper (17) is slidably disposed in the anode pool (13) along a vertical direction and is located on both sides of the anode plate (19); A first impeller (616) is arranged in the first water inlet main pipe (615), and the axis of the first impeller (616) is horizontal and extends to the outside of the first water inlet main pipe (615); a second crank portion (617) is fixedly arranged on the section of the axis of the first impeller (616) located outside the first water inlet main pipe (615), a second connecting rod (618) is hingedly connected to one end of the second crank portion (617) away from the axis of the first impeller (616), and one end of the second connecting rod (618) away from the second crank portion (617) is hingedly connected to the first scraper (16); A second impeller (636) is arranged in the second water inlet main pipe (635), and the axis of the second impeller (636) is horizontal and extends to the outside of the second water inlet main pipe (635); a third crank portion (637) is fixedly arranged on the section of the axis of the second impeller (636) located outside the second water inlet main pipe (635), and a third connecting rod (638) is hinged at one end of the third crank portion (637) away from the axis of the second impeller (636), and one end of the third connecting rod (638) away from the third crank portion (637) is hinged to the second scraper (17).

7. The source-grid-load-storage device according to claim 4, characterized in that: The source-grid-load-storage device further comprises a plate adjustment assembly, wherein the plate adjustment assembly comprises a slide bar (71), a seesaw (72), a first shaft bar (73), a second shaft bar (74), a rotating drum (75), a pendulum (76) and a connecting rod (77); The first shaft (73) and the second shaft (74) are both vertically rotatably mounted on a bracket (8) on which the motor (21) is mounted; a first bevel gear (78) is also fixedly mounted on the output shaft (211); a second bevel gear (731) meshing with the first bevel gear (78) is also fixedly mounted on the first shaft (73); a first gear (732) is also fixedly mounted on the first shaft (73); a second gear (741) meshing with the first gear (732) is also fixedly mounted on the second shaft (74); An extension portion (742) extends radially from the top of the second shaft (74), and one end of the extension portion (742) away from the second shaft (74) is hinged to the end of the hammer handle (761) of the pendulum (76); the rotating cylinder (75) is slidably sleeved on the second shaft (74), the middle part of the hammer handle (761) is hinged to the connecting rod (77), and the other end of the connecting rod (77) is hinged to the rotating cylinder (75); The middle part of the seesaw (72) is rotatably arranged on the bracket (8), one end of the seesaw (72) is provided with a sleeve portion (721) and the other end is provided with an abutment portion (722); a first adjustment rod (181) is provided on the cathode plate (18), and a second adjustment rod (191) is provided on the anode plate (19), and the first adjustment rod (181) and the second adjustment rod (191) are fixedly connected; the first adjustment rod (181) is slidably inserted in the first pool cover (14) along the vertical direction, and the second adjustment rod (191) is slidably inserted in the second pool cover (15) along the vertical direction; one end of the sliding rod (71) is hinged to the first adjustment rod (181) and the other end is slidably inserted in the sleeve portion (721); A contact plate (751) is also provided at the lower portion of the rotating drum (75), and the upper surface of the contact plate (751) is in contact with the lower surface of the contact portion (722).

8. The source-grid-load-storage device according to claim 7, characterized in that: A first support platform (182) is fixedly disposed above the first pool cover (14) where the first adjustment rod (181) is located, and a second support platform (192) is fixedly disposed above the second pool cover (15) where the second adjustment rod (191) is located; A first compression spring (183) is provided between the first support platform (182) and the first pool cover (14), and a second compression spring (193) is provided between the second support platform (192) and the second pool cover (15).

9. The source-grid-load-storage device according to claim 8, characterized in that: A first bellows (184) is provided between the first support platform (182) and the first pool cover (14), and two ends of the first bellows (184) are respectively connected to the first support platform (182) and the first pool cover (14) in an airtight manner; A second bellows (194) is provided between the second support platform (192) and the second pool cover (15), and two ends of the second bellows (194) are respectively connected to the second support platform (192) and the second pool cover (15) in an airtight manner.

10. The source-grid-load-storage device according to claim 3, characterized in that: The source-grid-load-storage device further comprises a water replenishment pool, wherein the water replenishment pool is connected to the cathode pool (12) via a first water replenishment pipe, and the water replenishment pool is connected to the anode pool (13) via a second water replenishment pipe; A first float valve is connected to the first water supply pipe, and a second float valve is connected to the second water supply pipe, the float of the first float valve floats in the electrolyzed water of the cathode pool (12), and the float of the second float valve floats in the electrolyzed water of the anode pool (13); When the electrolyzed water in the cathode pool (12) is lower than a first preset liquid level, the first float valve connects the first water supply pipe; when the electrolyzed water in the cathode pool (12) is higher than a second preset liquid level, the first float valve blocks the first water supply pipe; When the electrolyzed water in the anode pool (13) is lower than the first preset liquid level, the second float valve connects the second water supply pipe; when the electrolyzed water in the anode pool (13) is higher than the second preset liquid level, the second float valve blocks the second water supply pipe.

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