A source-grid-load-storage device based on local green electricity

Abstract

The present invention relates to the technical field of source-grid-load-storage, and particularly relates to a source-grid-load-storage device based on local green electricity. The source-grid-load-storage device based on local green electricity includes a green electricity module, a power grid module, a load module, and a energy storage module. The green electricity module generates electric energy through renewable resources, and the generated electric energy is connected to the power grid module. The energy storage module is used to store the surplus electric energy when the green electricity module has overproduction, and supply electric energy to the power grid module when the green electricity module has insufficient production. The power grid module is used to supply the electric energy from the green electricity module and / or the energy storage module to the load module. The load module is the consumption end of electric energy. It can ensure the balance of supply and demand between the green electricity module and the user side, and make the green electricity module always in a state of high-efficiency power generation, improving the utilization rate of green energy by the green electricity module.

Description

Technical Field

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

[0002] The traditional green electricity power supply system does not include an energy storage module. The electric energy generated by the green electricity module (such as hydropower, wind power, photovoltaic power, etc.) is distributed to the user side (load module) through the power grid. Since the electricity demand of the user side changes in real time, it is required that the electric energy generated by the green electricity module also be adjusted synchronously with the demand fluctuations of the user side, so as to achieve the balance between supply and demand.

[0003] In the case where the electricity demand of the user side is less than the electric energy supplied by the green electricity module, the supply needs to be reduced, which will cause a large amount of energy loss (for example, for photovoltaic power generation, if the electricity demand is small under strong sunlight, it is necessary to adjust the photovoltaic power generation output to reduce the output, resulting in low utilization rate of the photovoltaic power generation field). 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 an energy storage module, the surplus electric energy generated by the green electricity module is stored by the energy storage module, and the stored electric energy is supplied to the power grid module when the green electricity module has insufficient production capacity. Thus, while ensuring the balance between supply and demand between the green electricity module and the user side, the green electricity module is always in a state of high-efficiency power generation, and the utilization rate of green energy by the green electricity module is improved.

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

[0006] Further, the energy storage module realizes energy storage by converting the surplus electric energy into chemical energy, and converts the chemical energy into electric energy and transports it to the power grid module when the demand of the load module is greater than the supply of the green electricity module.

[0007] Further, the energy storage module includes an electrolytic water component, a hydrogen pumping component, an oxygen pumping component, a hydrogen storage tank, an oxygen storage tank, and an electric energy generation component; the renewable resource is solar energy, and the green power module is a photovoltaic power generation station; the excess electric energy is connected to the electrolytic water component; the electrolytic cell of the electrolytic water component is separated into a cathode chamber and an anode chamber by a diaphragm, the upper part of the cathode chamber is sealed by a first cell cover, and the upper part of the anode chamber is sealed by a second cell cover; the intake end of the hydrogen pumping component is connected above the cathode chamber, and the outlet end of the hydrogen pumping component is connected to the hydrogen storage tank; the intake end of the oxygen pumping component is connected above the anode chamber, and the outlet end of the oxygen pumping component is connected to the oxygen storage tank; when the demand of the load module is greater than the supply of the green power module, the output ends of both the hydrogen storage tank and the oxygen storage tank are connected to the electric energy generation component, and the electric energy generation component generates electric energy by the hydrogen and oxygen input and inputs the electric energy into the power grid module.

[0008] Further, the hydrogen pumping component includes a motor, a hydrogen pumping cylinder, a hydrogen pumping piston, and a first connecting rod; a first crank portion is fixedly arranged on the output shaft of the motor, one end of the first crank portion away from the output shaft is hinged to the first connecting rod, and one end of the first connecting rod away from the first crank portion is hinged to the piston rod of the hydrogen pumping piston; a first intake port and a first outlet port are arranged at one end of the hydrogen pumping cylinder, and a second intake port and a second outlet port are arranged at the other end of the hydrogen pumping cylinder, and the hydrogen pumping piston can move between the first intake port and the second intake port; both the first intake port and the second intake port are connected above the cathode chamber through pipelines, and one-way valves are arranged on the pipelines; both the first outlet port and the second outlet port are connected to the hydrogen storage tank through pipelines, and one-way valves are arranged on the pipelines; the oxygen pumping component includes an oxygen pumping cylinder and an oxygen pumping piston, and the piston rod of the oxygen pumping piston is fixedly connected to the piston rod of the hydrogen pumping piston; a third intake port and a third outlet port are arranged at one end of the oxygen pumping cylinder, and a fourth intake port and a fourth outlet port are arranged at the other end of the oxygen pumping cylinder, and the oxygen pumping piston can move between the third intake port and the fourth intake port; both the third intake port and the fourth intake port are connected above the anode chamber through pipelines, and one-way valves are arranged on the pipelines; both the third outlet port and the fourth outlet port are connected to the hydrogen storage tank through pipelines, and one-way valves are arranged on the pipelines.

[0009] Furthermore, the source-grid-load-storage device further includes an electrolyzed water circulation component, and the electrolyzed water circulation component includes a cathode suction cylinder, a cathode suction piston, an anode suction cylinder, and an anode suction piston; the piston rods of the cathode suction piston and the anode suction piston are both fixedly connected to the piston rod of the hydrogen suction piston; at one end of the cathode suction cylinder, there are a first water inlet pipe and a first water outlet pipe, and at the other end of the cathode suction cylinder, there are a second water inlet pipe and a second water outlet pipe, and the cathode suction piston can move between the first water inlet pipe and the second water inlet pipe; both the first water inlet pipe and the second water inlet pipe are connected to a first main water inlet pipe, and the first main water inlet pipe is connected to the bottom of the cathode cell, and one-way valves are provided on both the first water inlet pipe and the second water inlet pipe; both the first water outlet pipe and the second water outlet pipe are connected to the upper part of the cathode cell through pipelines, and one-way valves are provided on the pipelines; at one end of the anode suction cylinder, there are a third water inlet pipe and a third water outlet pipe, and at the other end of the anode suction cylinder, there are a fourth water inlet pipe and a fourth water outlet pipe, and the anode suction piston can move between the third water inlet pipe and the fourth water inlet pipe; both the third water inlet pipe and the fourth water inlet pipe are connected to a second main water inlet pipe, and the second main water inlet pipe is connected to the bottom of the anode cell, and one-way valves are provided on both the third water inlet pipe and the fourth water inlet pipe; both the third water outlet pipe and the fourth water outlet pipe are connected to the upper part of the anode cell through pipelines, and one-way valves are provided on the pipelines.

[0010] Furthermore, the electrolyzed water component further includes a first scraper and a second scraper. The first scraper is slidably arranged vertically in the cathode cell and is located on both sides of the cathode plate. The second scraper is slidably arranged vertically in the anode cell and is located on both sides of the anode plate; a first impeller is arranged in the first main water inlet pipe, and the shaft of the first impeller is horizontal and extends to the outside of the first main water inlet pipe; a second crank part is fixedly arranged on the section of the shaft of the first impeller located outside the first main water inlet pipe, and a second connecting rod is hinged to one end of the second crank part away from the shaft of the first impeller, and the other end of the second connecting rod away from the second crank part is hinged to the first scraper; a second impeller is arranged in the second main water inlet pipe, and the shaft of the second impeller is horizontal and extends to the outside of the second main water inlet pipe; a third crank part is fixedly arranged on the section of the shaft of the second impeller located outside the second main water inlet pipe, and a third connecting rod is hinged to one end of the third crank part away from the shaft of the second impeller, and the other end of the third connecting rod away from the third crank part is hinged to the second scraper.

[0011] Further, the source-network-load-storage device further includes a plate adjusting assembly, and the plate adjusting assembly includes a sliding rod, a seesaw, a first shaft rod, a second shaft rod, a rotating cylinder, a pendulum and a connecting rod; the first shaft rod and the second shaft rod are both vertically rotatably arranged on the bracket for mounting the motor, and a first bevel gear is fixedly arranged on the output shaft, and a second bevel gear meshing with the first bevel gear is fixedly arranged on the first shaft rod; a first gear is also fixedly arranged on the first shaft rod, and a second gear meshing with the first gear is fixedly arranged on the second shaft rod; an extension part extends radially at the top of the second shaft rod, and one end of the extension part away from the second shaft rod is hinged to the end of the hammer handle of the pendulum; the rotating cylinder is slidably sleeved on the second shaft rod, the middle of the hammer handle is hinged to the connecting rod, and the other end of the connecting rod is hinged to the rotating cylinder; the middle of the seesaw is rotatably arranged on the bracket, one end of the seesaw is provided with a sleeve part and the other end is provided with an abutting part; a first adjusting rod is arranged on the cathode plate, and a second adjusting rod is arranged 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 cell cover in the vertical direction, and the second adjusting rod is slidably inserted in the second cell cover in 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 part; a abutting plate is further arranged at the lower part of the rotating cylinder, and the upper surface of the abutting plate abuts against the lower surface of the abutting part.

[0012] Further, a first bearing platform is fixedly arranged above the first cell cover where the first adjusting rod is located, and a second bearing platform is fixedly arranged above the second cell cover where the second adjusting rod is located; a first compression spring is arranged between the first bearing platform and the first cell cover, and a second compression spring is arranged between the second bearing platform and the second cell cover.

[0013] Further, a first bellows is arranged between the first bearing platform and the first cell cover, and two ends of the first bellows are hermetically connected to the first bearing platform and the first cell cover respectively in an airtight manner; a second bellows is arranged between the second bearing platform and the second cell cover, and two ends of the second bellows are hermetically connected to the second bearing platform and the second cell cover respectively in an airtight manner.

[0014] Furthermore, the source-grid-load-storage device further includes a make-up water tank. The make-up water tank is connected to the cathode cell through a first make-up water pipe, and the make-up water tank is connected to the anode cell through a second make-up water pipe. A first float valve is connected in the first make-up water pipe, and a second float valve is connected in the second make-up water pipe. The float ball of the first float valve floats in the electrolyzed water of the cathode cell, and the float ball of the second float valve floats in the electrolyzed water of the anode cell. When the electrolyzed water in the cathode cell is lower than a first preset liquid level, the first float valve connects the first make-up water pipe. When the electrolyzed water in the cathode cell is higher than a second preset liquid level, the first float valve blocks the first make-up water pipe. When the electrolyzed water in the anode cell is lower than the first preset liquid level, the second float valve connects the second make-up water pipe. When the electrolyzed water in the anode cell is higher than the second preset liquid level, the second float valve blocks the second make-up water pipe.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The source-grid-load-storage device based on local green power provided by the embodiment of the present invention can keep the green power module in a state of high-efficiency power generation all the time while ensuring the supply-demand balance between the green power module and the user side, improve the utilization rate of green energy by the green power module, and reduce energy waste. By setting up a make-up water tank, a first make-up water pipe, a second make-up water pipe, a first float valve and a second float valve, water can be timely supplemented to the cathode cell and the anode cell during the process of the electrolyzed water reaction consuming the electrolyte, thereby maintaining the concentration of the electrolyte.

[0017] 2. The source-grid-load-storage device based on local green power provided by the embodiment of the present invention, during the operation of the motor, the cathode suction cylinder synchronously sucks and conveys the electrolyte in the cathode cell, and the anode suction cylinder synchronously sucks and conveys the electrolyte in the anode cell. During the suction process of the electrolyte, the electrolyte is conveyed to the outside for circulation and can be effectively cooled in the circulation pipeline. Thus, heat accumulation in the cathode cell and the anode cell can be effectively avoided, which is beneficial to ensuring the normal progress of the electrolyzed water reaction. In addition, during the aforementioned electrolyte suction process, it is also beneficial for the water supplemented to the cathode cell and the anode cell to be promptly mixed with the original electrolyte, thereby avoiding uneven electrolyte concentration in the cathode cell and the anode cell. During the process of the cathode suction cylinder sucking the electrolyte in the cathode cell, the sucked electrolyte can drive the impeller to rotate. During the rotation of the impeller, the second crank part drives the second connecting rod, enabling the first scraper to reciprocate linearly in the vertical direction in the cathode cell. Furthermore, the first scraper can effectively scrape off the hydrogen bubbles adhering to the cathode plate generated by the electrolyzed water, avoiding the reduction of the effective contact area between the cathode plate and the electrolyte caused by the adhesion of bubbles on the surface of the cathode plate, and thus ensuring the normal progress of the electrolyzed water reaction.

[0018] 3. The source-grid-load-storage device based on local green power provided by the embodiments of the present invention can generate hydrogen and oxygen at a faster rate through electrolyzing water when the power of the surplus electric energy is relatively large. Correspondingly, the rotational speed of the motor increases to drive the hydrogen suction cylinder and the oxygen suction cylinder to pump air at a higher frequency. As the rotational speed of the motor increases, the rotational speed of the second shaft rod increases, and the centrifugal force causes the pendulum to swing upward. The upward swing of the pendulum pulls the rotating cylinder upward, and then the abutting plate pushes the abutting part upward, so that the sliding rod presses down the first adjusting rod under the action of the seesaw. Thus, the cathode plate and the anode plate move downward, and the parts of the cathode plate and the anode plate immersed in the electrolyte increase, effectively reducing the current density, so that the current density can always be maintained within an appropriate range when the input current increases, which is conducive to the efficient progress of the electrolyzing water reaction and is also conducive to protecting the cathode plate and the anode plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0020] Figure 1 is a structural block diagram of a source-grid-load-storage device based on local green power drawn according to the embodiments of the present invention;

[0021] Figure 2 is a three-dimensional structural schematic diagram of an energy storage module drawn according to the embodiments of the present invention;

[0022] Figure 3 is another three-dimensional structural schematic diagram of an energy storage module drawn according to the embodiments of the present invention;

[0023] Figure 4 is a cross-sectional view of an energy storage module drawn according to the embodiments of the present invention;

[0024] Figure 5 According to Figure 4 is a partially enlarged view of area A drawn;

[0025] Figure 6 is another cross-sectional view of an energy storage module drawn according to the embodiments of the present invention;

[0026] Figure 7 is yet another cross-sectional view of an energy storage module drawn according to the embodiments of the present invention;

[0027] Figure 8 According to Figure 7 is a partial cross-sectional view of the plate adjusting assembly drawn;

[0028] Figure 9 is a gas-liquid flow direction diagram of an energy storage module drawn according to the embodiments of the present invention.

[0029] Reference numerals in the drawings and corresponding component names:

[0030] 11 - Diaphragm; 12 - Cathode cell; 13 - Anode cell; 14 - First cell cover; 15 - Second cell cover; 16 - First scraper; 17 - Second scraper; 18 - Cathode plate; 181 - First adjusting rod; 182 - First bearing block; 183 - First compression spring; 184 - First bellows; 19 - Anode plate; 191 - Second adjusting rod; 192 - Second bearing block; 193 - Second compression spring; 194 - Second bellows; 21 - Motor; 211 - Output shaft; 22 - 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 part; 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 main water inlet pipe; 616 - First impeller; 617 - Second crank part; 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 main water inlet pipe; 636 - Second impeller; 637 - Third crank part; 638 - Third connecting rod; 64 - Anode suction piston; 71 - Slide bar; 72 - Lever; 721 - Sleeve part; 722 - Contact part; 73 - First shaft rod; 731 - Second bevel gear; 732 - First gear; 74 - Second shaft rod; 741 - Second gear; 742 - Extension part; 75 - Rotating cylinder; 751 - Contact plate; 76 - Pendulum; 761 - Hammer handle; 77 - Connecting rod; 78 - First bevel gear; 8 - Bracket. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with embodiments and drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and do not limit the present invention. It should be noted that the present invention has been in the actual R & D and use stage.

[0032] The traditional green power supply system does not include an energy storage module. The electric energy generated by the green power module (such as hydropower, wind power, photovoltaic power, etc.) is distributed to the user side (load module) through the power grid. Since the electricity demand of the user side changes in real time, it is required that the electric energy generated by the green power module also be adjusted synchronously with the demand fluctuations of the user side, so as to achieve a balance between supply and demand.

[0033] 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).

[0034] 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.

[0035] Example 1

[0036] 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:

[0037] The green power module generates electricity through renewable resources, and the generated electricity is connected to the power grid module;

[0038] 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;

[0039] 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.

[0040] 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.

[0041] More specifically, the energy storage module realizes energy storage by converting the excess electric energy into chemical energy, and when the demand of the load module is greater than the supply of the green power module, it converts the chemical energy into electric energy and transmits it to the power grid module.

[0042] The energy storage module includes an electrolytic water assembly, a hydrogen suction assembly, an oxygen suction assembly, a hydrogen storage tank 4, an oxygen storage tank 5 and an electric energy generation assembly;

[0043] The renewable resource is solar energy, and the green power module is a photovoltaic power generation station; the excess electric energy is connected to the electrolytic water assembly; the electrolytic cell of the electrolytic water assembly is separated into a cathode cell 12 and an anode cell 13 by a diaphragm 11, the cathode cell 12 is sealed by a first cell cover 14 above, and the anode cell 13 is sealed by a second cell cover 15 above;

[0044] The intake end of the hydrogen suction assembly is connected above the cathode cell 12, and the outlet end of the hydrogen suction assembly is connected to the hydrogen storage tank 4; the intake end of the oxygen suction assembly is connected above the anode cell 13, and the outlet end of the oxygen suction assembly is connected to the oxygen storage tank 5;

[0045] When the demand of the load module is greater than the supply of the green power module, the output ends of the hydrogen storage tank 4 and the oxygen storage tank 5 are both connected to the electric energy generation assembly, and the electric energy generation assembly generates electric energy by the hydrogen and oxygen connected and inputs the electric energy to the power grid module.

[0046] Accordingly, the embodiment of the present invention uses excess electric energy to electrolyze water to produce hydrogen, and can convert the excess electric energy into the chemical energy of hydrogen and oxygen for storage; by separately collecting and storing hydrogen and oxygen, the explosion risk caused by the accidental mixing of the prepared hydrogen and oxygen can be avoided.

[0047] It should be understood that in this embodiment, the electric energy generation assembly (not shown in the drawings) can adopt related equipment in the prior art that can generate electricity using hydrogen and oxygen (such as a fuel cell), which will not be elaborated here.

[0048] 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;

[0049] 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;

[0050] One end of the hydrogen suction cylinder 22 is provided with a first air inlet 221 and a first air outlet 222, and the other end of the hydrogen suction cylinder 22 is provided with a second air inlet 223 and a second air outlet 224. The hydrogen suction piston 23 can move between the first air inlet 221 and the second air inlet 223. Preferably, during the movement of the hydrogen suction piston 23 between the first air inlet 221 and the second air inlet 223, the first air outlet 222 and the second air outlet 224 are not blocked.

[0051] Both the first air inlet 221 and the second air inlet 223 are connected to the upper part of the cathode cell 12 through pipelines, and one-way valves are arranged on the pipelines. Both the first air outlet 222 and the second air outlet 224 are connected to the hydrogen storage tank 4 through pipelines, and one-way valves are arranged on the pipelines.

[0052] The oxygen suction assembly includes an oxygen suction cylinder 31 and an oxygen suction piston 32. The piston rod of the oxygen suction piston 32 is fixedly connected to the piston rod of the hydrogen suction piston 23.

[0053] One end of the oxygen suction cylinder 31 is provided with a third air inlet 311 and a third air outlet 312, and the other end of the oxygen suction cylinder 31 is provided with a fourth air inlet 313 and a fourth air outlet 314. The oxygen suction piston 32 can move between the third air inlet 311 and the fourth air inlet 313. Preferably, during the movement of the oxygen suction piston 32 between the third air inlet 311 and the fourth air inlet 313, the third air outlet 312 and the fourth air outlet 314 are not blocked.

[0054] Both the third air inlet 311 and the fourth air inlet 313 are connected to the upper part of the anode cell 13 through pipelines, and one-way valves are arranged on the pipelines. Both the third air outlet 312 and the fourth air outlet 314 are connected to the hydrogen storage tank 4 through pipelines, and one-way valves are arranged on the pipelines.

[0055] Accordingly, in the source-grid-load-storage device provided in this embodiment, the first crank portion 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. By driving the first connecting rod 24 with the first crank portion 25 fixedly arranged on the output shaft 211 of the motor 21, the piston rod of the hydrogen suction piston 23 can push the hydrogen suction piston 23 to perform a reciprocating linear motion between the first air inlet 221 and the second air inlet 223. Please refer to Figure 9, under the action of the one-way valve, during the downward movement of the hydrogen suction piston 23, the first air inlet 221 sucks hydrogen from the cathode cell 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 sucks hydrogen from the cathode cell 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 continuously sucks and delivers oxygen synchronously (the principle is similar to the hydrogen suction process and will not be elaborated here); thus, through the operation of the motor 21, hydrogen can be continuously sucked from the cathode cell 12 and oxygen can be sucked from the anode cell 13, thereby ensuring the stable and efficient progress of the electrolytic water reaction.

[0056] Preferably, the motor 21 is also powered by the excess electric energy of the green power module. Thus, while the excess electric energy is connected to the electrolytic water assembly for electrolytic water reaction, the motor 21 is also started. Furthermore, while hydrogen and oxygen are generated by electrolytic water, the hydrogen suction cylinder 22 and the oxygen suction cylinder 31 are started to suck the generated hydrogen and oxygen, so that the start and stop of the motor 21 do not need to be controlled separately. Preferably, the rotation speed of the motor 21 is positively correlated with the power of the excess electric energy. Thus, when the power of the excess electric energy is large and the rate of generating hydrogen and oxygen by electrolytic water is fast, the suction frequency of the hydrogen suction cylinder 22 and the oxygen suction cylinder 31 is faster, and the suction speed of the hydrogen suction cylinder 22 can match the generation speed of hydrogen, and the suction speed of the oxygen suction cylinder 31 can match the generation speed of oxygen, thereby maintaining the air pressure stability of the cathode cell 12 and the anode cell 13.

[0057] Preferably, the source-grid-load-storage device further includes a makeup water tank, the makeup water tank is connected to the cathode cell 12 through a first makeup water pipe, and the makeup water tank is connected to the anode cell 13 through a second makeup water pipe;

[0058] A first float valve is connected in the first makeup water pipe, and a second float valve is connected in the second makeup water pipe. The float ball of the first float valve floats in the electrolytic water of the cathode cell 12, and the float ball of the second float valve floats in the electrolytic water of the anode cell 13;

[0059] When the electrolytic water in the cathode cell 12 is lower than the first preset liquid level, the first float valve connects the first makeup water pipe; when the electrolytic water in the cathode cell 12 is higher than the second preset liquid level, the first float valve blocks the first makeup water pipe;

[0060] When the electrolytic water in the anode cell 13 is lower than the first preset liquid level, the second float valve connects the second makeup water pipe; when the electrolytic water in the anode cell 13 is higher than the second preset liquid level, the second float valve blocks the second makeup water pipe.

[0061] Accordingly, by providing a makeup water tank, a first makeup water pipe, a second makeup water pipe, a first float valve, and a second float valve (none of their structures are existing and are not shown in the drawings), it is possible to timely supply water to the cathode cell 12 and the anode cell 13 during the electrolysis reaction when the electrolyte is consumed, thereby maintaining the concentration of the electrolyte.

[0062] Example 2

[0063] As Figures 2 to 9 shown, this embodiment is based on Embodiment 1, and the difference is that in this embodiment:

[0064] The source-grid-load-storage device further includes an electrolysis water circulation assembly, and the electrolysis water circulation assembly includes a cathode suction cylinder 61, a cathode suction piston 62, an anode suction cylinder 63, and an anode suction piston 64; the piston rods of the cathode suction piston 62 and the anode suction piston 64 are both fixedly connected to the piston rod of the hydrogen suction piston 23;

[0065] 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, during the movement of the cathode suction piston 62 between 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 not blocked;

[0066] Both the first water inlet pipe 611 and the second water inlet pipe 613 are connected to a first main water inlet pipe 615, and the first main water inlet pipe 615 is connected to the bottom of the cathode cell 12. Check valves are provided on both the first water inlet pipe 611 and the second water inlet pipe 613; both the first water outlet pipe 612 and the second water outlet pipe 614 are connected to the upper part of the cathode cell 12 through pipelines, and check valves are provided on the pipelines;

[0067] 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. The anode suction piston 64 can move between the third water inlet pipe 631 and the fourth water inlet pipe 633; preferably, during the movement of the anode suction piston 64 between 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 not blocked;

[0068] The third water inlet pipe 631 and the fourth water inlet pipe 633 are both connected to the second main water inlet pipe 635. The second main water inlet pipe 635 is connected to the bottom of the anode cell 13. One-way valves are provided on both 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 cell 13 through pipelines, and one-way valves are provided on the pipelines.

[0069] Accordingly, during the operation of the motor 21, the cathode suction cylinder 61 synchronously sucks and conveys the electrolyte in the cathode cell 12 (the principle is similar to the hydrogen suction process and will not be elaborated here), and the anode suction cylinder 63 synchronously sucks and conveys the electrolyte in the anode cell 13 (the principle is similar to the hydrogen suction process and will not be elaborated here). During the suction process of the electrolyte, the electrolyte is conveyed to the outside for circulation and can be effectively cooled in the circulation pipeline. Thus, heat accumulation in the cathode cell 12 and the anode cell 13 can be effectively avoided, which is beneficial to ensuring the normal progress of the electrolytic water reaction. In addition, during the aforementioned electrolyte suction process, it is also beneficial for the water supplemented into the cathode cell 12 and the anode cell 13 to be promptly mixed with the original electrolyte, thereby avoiding uneven electrolyte concentration in the cathode cell 12 and the anode cell 13. Furthermore, it is beneficial to maintain the efficient progress of the electrolytic water reaction.

[0070] More preferably, as Figure 3 、 Figure 4 、 Figure 6 shown, the electrolytic water assembly further includes a first scraper 16 and a second scraper 17. The first scraper 16 is slidably arranged in the cathode cell 12 in the vertical direction and is located on both sides of the cathode plate 18. The second scraper 17 is slidably arranged in the anode cell 13 in the vertical direction and is located on both sides of the anode plate 19.

[0071] A first impeller 616 is provided in the first main water inlet pipe 615. The axis of the first impeller 616 is horizontal and extends to the outside of the first main water inlet 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 main water inlet pipe 615. One end of a second connecting rod 618 is hinged to the second crank portion 617 away from the axis of the first impeller 616, and the other end of the second connecting rod 618 away from the second crank portion 617 is hinged to the first scraper 16.

[0072] A second impeller 636 is provided in the second main water inlet pipe 635, and the axis of the second impeller 636 is horizontal and extends to the outside of the second main water inlet pipe 635; a third crank portion 637 is fixedly provided on the section of the axis of the second impeller 636 located outside the second main water inlet pipe 635, and a third connecting rod 638 is hinged to one end of the third crank portion 637 away from the axis of the second impeller 636, and the other end of the third connecting rod 638 away from the third crank portion 637 is hinged to the second scraper 17.

[0073] Based on this, during 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, during the rotation of the impeller, the second crank portion 617 drives the second connecting rod 618, enabling the first scraper 16 to reciprocate linearly in the cathode cell 12 in the vertical direction. Furthermore, the first scraper 16 can effectively scrape off the hydrogen bubbles adhering to the cathode plate 18 generated by electrolyzed water, avoiding the reduction of the effective contact area between the cathode plate 18 and the electrolyte caused by the adhesion of bubbles on the surface of the cathode plate 18, thereby ensuring the normal progress of the electrolyzed water reaction (the process of the second scraper 17 in the anode cell 13 scraping off the oxygen bubbles adhering to the anode plate 19 is the same and will not be elaborated).

[0074] Embodiment 3

[0075] As Figures 2 to 8 shown, this embodiment is based on Embodiment 1, and the difference is that in this embodiment:

[0076] The source-grid-load-storage device further includes a plate adjusting assembly, and the plate adjusting assembly includes a slide bar 71, a seesaw 72, a first shaft rod 73, a second shaft rod 74, a rotating cylinder 75, a pendulum 76 and a connecting rod 77;

[0077] The first shaft rod 73 and the second shaft rod 74 are both vertically rotatably arranged on the bracket 8 mounting the motor 21, and a first bevel gear 78 is further fixedly provided on the output shaft 211, and a second bevel gear 731 meshing with the first bevel gear 78 is fixedly provided on the first shaft rod 73; a first gear 732 is further fixedly provided on the first shaft rod 73, and a second gear 741 meshing with the first gear 732 is fixedly provided on the second shaft rod 74;

[0078] At the top of the second shaft rod 74, there is a radially extending extension 742, and one end of the extension 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 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;

[0079] The middle of the seesaw 72 is rotatably arranged on the bracket 8, one end of the seesaw 72 is provided with a sleeve part 721 and the other end is provided with an abutting part 722; a first adjusting rod 181 is arranged on the cathode plate 18, and a second adjusting rod 191 is arranged on the anode plate 19, and the first adjusting rod 181 and the second adjusting rod 191 are fixedly connected; the first adjusting rod 181 is slidably inserted in the first cell cover 14 in the vertical direction, and the second adjusting rod 191 is slidably inserted in the second cell cover 15 in the vertical direction; one end of the sliding rod 71 is hinged to the first adjusting rod 181 and the other end is slidably inserted into the sleeve part 721;

[0080] At the lower part of the rotating cylinder 75, there is also an abutting plate 751, and the upper surface of the abutting plate 751 abuts against the lower surface of the abutting part 722.

[0081] Accordingly, when the power of the excess electric energy is relatively large, the rate of electrolyzing water to generate hydrogen and oxygen is faster. Correspondingly, the rotation speed of the motor 21 increases to drive the hydrogen suction cylinder 22 and the oxygen suction cylinder 31 to pump air at a higher frequency; as the rotation speed of the motor 21 increases, the rotation speed of the second shaft rod 74 increases, and the centrifugal force causes the pendulum 76 to swing upward (please compare Figure 5 and Figure 8 , Figure 5 where the pendulum 76 swings upward to obtain the scene shown in Figure 8 ), the upward swing of the pendulum 76 pulls the rotating cylinder 75 upward, and then the abutting plate 751 pushes the abutting part 722 upward, so that the sliding rod 71 presses down the first adjusting rod 181 under the action of the seesaw 72; thus, the cathode plate 18 and the anode plate 19 move downward, and the parts of the cathode plate 18 and the anode plate 19 immersed in the electrolyte increase, effectively reducing the current density (for photovoltaic power generation, the voltage is basically stable, and the increase in the power of the excess electric energy is mainly reflected in the increase in current. The increase in current causes the current density to increase. 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 progress of the electrolytic water reaction and is conducive to protecting the cathode plate 18 and the anode plate 19.

[0082] Preferably, a first bearing platform 182 is fixedly arranged above the first pool cover 14 where the first adjusting rod 181 is located, and a second bearing platform 192 is fixedly arranged above the second pool cover 15 where the second adjusting rod 191 is located;

[0083] A first compression spring 183 is arranged between the first bearing platform 182 and the first pool cover 14, and a second compression spring 193 is arranged between the second bearing platform 192 and the second pool cover 15.

[0084] Accordingly, in the case of a large excess current, the first adjusting rod 181 presses down, causing the cathode plate 18 and the anode plate 19 to move downward. 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 cylinder 75 to move downward along the second shaft rod 74. The first adjusting rod 181 moves upward under the action of the first compression spring 183, and then pulls the cathode plate 18 upward (the anode plate 19 is the same and will not be elaborated). Thus, it can be ensured 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 electrolytic water reaction always remains in an appropriate range, which is conducive to the efficient progress of the electrolytic water reaction and is conducive to protecting the cathode plate 18 and the anode plate 19.

[0085] More preferably, a first bellows 184 is arranged between the first bearing platform 182 and the first pool cover 14, and the two ends of the first bellows 184 are hermetically connected to the first bearing platform 182 and the first pool cover 14 respectively;

[0086] A second bellows 194 is arranged between the second bearing platform 192 and the second pool cover 15, and the two ends of the second bellows 194 are hermetically connected to the second bearing platform 192 and the second pool cover 15 respectively.

[0087] Accordingly, even if hydrogen overflows along the outer wall of the first adjusting rod 181, it still cannot leak out under the sealing action of the first bellows 184 (similarly, oxygen cannot leak out either). Thus, it avoids the leakage of hydrogen along with the sliding of the first adjusting rod 181 and the leakage of oxygen along with the sliding of the second adjusting rod 191, and can ensure that the gas environment at the location of the source-grid-load-storage device is not affected. More importantly, it avoids the risk of combustion and explosion caused by the leakage and mixing of hydrogen and oxygen.

[0088] It should be understood that in this application, "rotationally arranged" means that only relative rotation can occur between the two. For example, the rotational arrangement of a hole and a shaft rod can be achieved by providing a shoulder on the shaft and a limiting groove in the hole to restrict the relative axial movement; the terms "slidably arranged" and "slidably inserted" mean that only relative sliding can occur between the two, such as structures like dovetail grooves and T-shaped grooves; the term "slidingly sleeved" means that one is sleeved outside the other, and relative rotation and relative axial movement can occur between the two.

[0089] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope 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; The energy storage module includes a water electrolysis component, a hydrogen suction component and an oxygen suction component; The hydrogen suction component 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); an end of the first crank portion (25) away from the output shaft (211) is hinged to the first connecting rod (24); an 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); 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); The electrolytic cell of the water electrolysis assembly is divided into a cathode cell (12) and an anode cell (13) by a diaphragm (11); the cathode cell (12) is sealed by a first cell cover (14) and the anode cell (13) is sealed by a second cell cover (15); 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 arranged on a bracket (8) on which the motor (21) is mounted; a first bevel gear (78) is also fixedly arranged on the output shaft (211); a second bevel gear (731) meshing with the first bevel gear (78) is also fixedly arranged on the first shaft (73); a first gear (732) is also fixedly arranged on the first shaft (73); a second gear (741) meshing with the first gear (732) is fixedly arranged on the second shaft (74); An extension portion (742) is radially extended 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).

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 also includes a hydrogen storage tank (4), an oxygen storage tank (5) and an electric energy generation component; The renewable resource is solar energy, the green electricity module is a photovoltaic power generation station; the excess electric energy is connected to the water electrolysis component; 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: 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; 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 pipelines, and one-way valves are 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 one-way valves are provided on the pipelines.

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 hinged 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 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).

7. The source-grid-load-storage device according to claim 1, 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 arranged between the first support platform (182) and the first pool cover (14), and a second compression spring (193) is arranged between the second support platform (192) and the second pool cover (15).

8. The source-grid-load-storage device according to claim 7, 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.

9. 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, wherein 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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