Energy storage device applied to micro-grid

Abstract

The invention discloses an energy storage device applied to a micro-grid, and belongs to the technical field of micro-grid energy storage, and the energy storage device comprises an energy storage box, a generator is installed in the energy storage box, fan blades are installed on an output shaft of the generator, and the exterior of the generator is connected with a sealing connection structure; the sealing connection structure comprises a clamping pipe fixedly connected to the outer portion of the generator, a transmission structure is installed in the elastic protection pipe and used for connecting the clamping pipe and an electricity storage module installed in the energy storage box, and connection between the clamping pipe and a clamping connector is sealed through the elastic protection pipe. In addition, under the condition that sealing is formed, connection between the clamping head and the clamping block can be enhanced, the phenomenon of dislocation and separation of the clamping head and the clamping block is reduced, under long-time use, the phenomenon that the contact resistance is increased due to corrosion of the elastic protection tube is avoided, and the phenomenon of output fluctuation of the micro-grid is further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of microgrid energy storage, and specifically, to an energy storage device applied to a microgrid. Background Art

[0002] A microgrid is a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc. It plays an important role in the energy transition and the development of the power system. In the microgrid technology system, as a core component for balancing the volatility of distributed energy, the technical evolution of the energy storage device is deeply coupled with the construction requirements of the new power system. With the accelerated global energy transition to promote "dual carbon", the penetration rate of intermittent renewable energy represented by photovoltaic and wind power in the microgrid continues to increase, resulting in a significant increase in the difficulty of spatio-temporal matching of power supply and demand. The energy storage device becomes the key technical support for solving the output fluctuation of distributed power sources and improving the self-balancing ability of the microgrid through the energy time-space translation mechanism.

[0003] In the patent with the title of an energy storage device applied to a microgrid and the publication number of CN118523506B, the following problems of the existing microgrid energy storage device are proposed: 1. Due to the self-discharge phenomenon of electrical equipment, the available capacity of the energy storage device gradually decreases, shortening the battery life or working time of the device; 2. Compared with the line itself, the line interface contacts the resistance over a larger range, and more heat is generated when the current passes through. The generation of heat will cause the contact resistance to further increase, resulting in an increase in current loss and a decrease in transmission efficiency. The problems of heat generation and resistance increase still affect the self-balancing ability of the microgrid. Although the external threaded connection can provide a strong mechanical bonding force, making the connection not easy to loosen and maintaining good stability under vibration, impact, etc.; at the same time, it can also avoid the situation of connection looseness that may occur during long-term operation, resulting in poor contact, further increasing the contact resistance and heat generation. However, the hollow screw (2106) and the limit rod (2108) are made of metal. Under long-term use, especially in the case where the equipment in the coastal chemical industrial zone needs to withstand salt spray, acid-base corrosion, the metal material is easily corroded, resulting in an increase in contact resistance. Moreover, the coastal wind power generation area and the chemical industrial area are also important application sites for the microgrid energy storage device. Under long-term corrosive use, the increase in resistance will still affect the self-balancing ability of the microgrid and the power output fluctuation. Therefore, an energy storage device applied to a microgrid is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide an energy storage device applied to a microgrid to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solutions: An energy storage device applied to a microgrid, comprising: An energy storage box, a generator is installed inside the energy storage box, a fan blade is installed on the output shaft of the generator, and a sealed connection structure is connected to the outside of the generator; The sealed connection structure includes a clamping pipe fixedly connected to the outside of the generator, an elastic protection pipe is interference-fitted outside the clamping pipe, a transmission structure is installed inside the elastic protection pipe, and the transmission structure is used to connect the clamping pipe and a power storage module installed inside the energy storage box. A secondary sealing structure is installed inside the elastic protection pipe, and the secondary sealing structure is used to fill the inside of the elastic protection pipe to form an active replacement seal.

[0006] Preferably, the secondary sealing structure includes a secondary expansion pipe, the secondary expansion pipe is fitted inside the elastic protection pipe, a micro air pump is installed inside the secondary expansion pipe, one air outlet of the micro air pump communicates with the secondary expansion pipe, and the other air inlet and outlet of the micro air pump penetrates the outer wall of the elastic protection pipe.

[0007] Preferably, a plurality of carbon-based hydrogel resistor bridge blocks are fixedly connected to the inner wall surface of the elastic protection pipe close to the clamping pipe, and the carbon-based hydrogel resistor bridge blocks are electrically connected to the power storage module and the micro air pump respectively.

[0008] Preferably, the secondary sealing structure further includes a plurality of strip-shaped air injection holes opened on the inner wall of the secondary expansion pipe. A plurality of electromagnetic iron plates and iron positioning plates are integrally formed on the inner wall of the strip-shaped air injection holes. The plurality of electromagnetic iron plates and the iron positioning plates adsorb each other to close the strip-shaped air injection holes, and the plurality of electromagnetic iron plates simultaneously adsorb the outer circumference of the clamping pipe.

[0009] Preferably, a plurality of magnetic attraction plates are integrally formed inside the electromagnetic iron plate.

[0010] Preferably, the transmission structure includes a transmission wire fixedly connected to the inside of the elastic protection pipe, one end of the transmission wire is fixedly connected with a card connector, a plurality of card connection blocks are fixedly connected to the inside of the clamping pipe, and the card connector is inserted into the inside of the clamping pipe and is misaligned and clamped with the plurality of card connection blocks.

[0011] Preferably, a first clamping ring is fixedly connected to the inner wall surface of the elastic protection pipe close to the clamping pipe, and a second clamping ring is integrally formed on the side of the clamping pipe close to the secondary expansion pipe.

[0012] Preferably, a plurality of heat dissipation fins are integrally formed on the outside of the energy storage box.

[0013] Preferably, a photovoltaic panel is snap-connected to the energy storage box. The photovoltaic panel forms a rain shield, and the energized end of the photovoltaic panel is electrically connected to the electricity storage module. A plurality of threaded mounting plates are fixedly connected to the bottom of the energy storage box.

[0014] Preferably, one of the air inlets and outlets of the micro air pump is communicated with a flow dividing valve. One port of the flow dividing valve away from the micro air pump is communicated with a second flow dividing pipe. One end of the second flow dividing pipe away from the flow dividing valve is communicated with a secondary expansion pipe. The other port of the flow dividing valve away from the micro air pump is communicated with a first flow dividing pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, by sleeving the elastic protection tube outside the clamping tube, the connection between the clamping tube and the clamping head is sealed by the elastic protection tube. And in the case of forming a seal, the connection between the clamping head and the clamping block can be strengthened, reducing the phenomenon of dislocation and separation between the clamping head and the clamping block. And under long-term use, the elastic protection tube will not cause an increase in contact resistance due to corrosion, further reducing the phenomenon of microgrid output fluctuation.

[0016] In the present invention, by starting the micro air pump, gas can be transported into the secondary expansion tube through the flow dividing valve and the second flow dividing pipe, so that the secondary expansion tube expands inside the elastic protection tube. And when the secondary expansion tube expands inside the elastic protection tube, the secondary expansion tube can assist the elastic protection tube to form further sealing, further reducing the penetration of erosive substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 is a cross-sectional structural diagram of an embodiment of the present invention; Figure 3 is an exploded structural diagram of the elastic protection tube and the micro air pump in an embodiment of the present invention; Figure 4 is a three-dimensional cross-sectional structural diagram of the clamping head in an embodiment of the present invention; Figure 5 is a cross-sectional structural diagram of the elastic protection tube in an embodiment of the present invention; Figure 6 is an embodiment of the present invention Figure 5 The enlarged structural diagram of area A in; Figure 7 is an embodiment of the present invention Figure 5 The enlarged structural diagram of area B in; Figure 8 is an embodiment of the present invention Figure 5Schematic diagram of the enlarged structure of area C therein; Figure 9 Schematic diagram of the electromagnetic iron plate and the iron positioning plate in the embodiment of the present invention; Figure 10 Schematic diagram of the electromagnetic iron plate and the magnetic attraction plate in the embodiment of the present invention.

[0018] In the figure: 100, energy storage box; 101, generator; 102, transmission wire; 103, elastic protection tube; 104, card connector; 105, card connection tube; 106, card connection block; 107, fan blade; 200, secondary expansion tube; 201, micro air pump; 300, carbon-based hydrogel resistor bridge block; 400, electromagnetic iron plate; 401, iron positioning plate; 402, magnetic attraction plate; 500, first snap ring; 501, second snap ring; 600, photovoltaic panel; 700, heat dissipation fin; 800, threaded mounting plate; 900, flow dividing valve; 901, first flow dividing tube; 902, second flow dividing tube. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1. As Figures 1 - 5 shown, an energy storage device applied to a microgrid in this application includes: An energy storage box 100, a generator 101 is installed inside the energy storage box 100, a fan blade 107 is installed on the output shaft of the generator 101, and a sealed connection structure is connected to the outside of the generator 101; The sealed connection structure includes a card connection tube 105 fixedly connected to the outside of the generator 101. An elastic protection tube 103 is press-fitted outside the card connection tube 105. A transmission structure is installed inside the elastic protection tube 103. The transmission structure is used to connect the card connection tube 105 and a power storage module installed inside the energy storage box 100. A secondary sealing structure is installed inside the elastic protection tube 103. The secondary sealing structure is used to fill the inside of the elastic protection tube 103 to form an active replacement seal.

[0021] Specifically, during the use process, the external wind drives the fan blade 107 to rotate. When the fan blade 107 rotates, it drives the generator 101 to rotate. When the generator 101 rotates, it will generate current. When the current is generated, the current is transmitted to the power storage module through the transmission structure connected to the card connection tube 105. In the power storage module, components of an inverter are used to regulate the voltage of the current or to transmit and store the current.

[0022] As shown Figures 1 - 4 in the figure, the transmission structure includes a transmission wire 102 fixedly connected inside an elastic protection tube 103. One end of the transmission wire 102 is fixedly connected with a clamping joint 104. A plurality of clamping blocks 106 are fixedly connected inside a clamping tube 105. The clamping joint 104 is inserted into the clamping tube 105 and is misaligned and clamped with the plurality of clamping blocks 106.

[0023] Specifically, during the process of transmitting current, the transmission structure is used to convey the current. During the process of conveying the current, the staff inserts the clamping joint 104 into the clamping tube 105 and rotates it inside the clamping tube 105. When the clamping joint 104 is inserted into the clamping tube 105 and rotated, it will cause the clamping plate outside the clamping joint 104 to form a misaligned clamping phenomenon with the clamping blocks 106. In the case of forming misaligned clamping, the transmission wire 102 is connected to the clamping tube 105 of the generator 101 through the clamping joint 104. Thus, the current generated by the generator 101 is transmitted to the clamping joint 104 and the transmission wire 102 through the clamping tube 105 and the clamping blocks 106, and is transmitted to the energy storage module through the transmission wire 102.

[0024] Furthermore, before the process of transmitting the current generated by the generator 101, the elastic protection tube 103 is used to further limit and shield the clamping tube 105 and the clamping joint 104. During the process of inserting the clamping joint 104, the staff can stretch the elastic protection tube 103 outwards, so that the elastic protection tube 103 expands outwards. The expanded elastic protection tube 103 is sleeved outside the clamping tube 105 to form an interference fit. At the same time, when the clamping joint 104 and the clamping blocks 106 are completely clamped, the elastic protection tube 103 will not be separated from the clamping tube 105 due to the force situation. And when the clamping joint 104 and the clamping blocks 106 are clamped, the middle part of the elastic protection tube 103 is compressed, that is, piled up under pressure. Therefore, in the normal state of the clamping joint 104 and the clamping blocks 106, the resilience generated by the compression of the elastic protection tube 103 will drive the clamping joint 104 to form a force moving outwards from the clamping tube 105 again. When the clamping joint 104 and the clamping blocks 106 are continuously clamped, it cooperates with the elastic protection tube 103 to form an outward pulling force, so that a tighter clamping is formed between the clamping joint 104 and the clamping blocks 106.

[0025] Furthermore, the elastic protection tube 103 is made of elastic wear-resistant fluororubber as a whole, which can physically isolate external corrosive substances such as salt spray. It will not be corroded and cause an increase in resistance after long-term use. And the elastic material of the elastic protection tube 103 can fit more closely to the outer wall of the clamping tube 105, reducing the intrusion of corrosive substances such as salt spray.

[0026] As shown Figures 3 - 8 in the figure, a first clamping ring 500 is fixedly connected to the inner wall surface of one side of the elastic protection tube 103 close to the clamping connection tube 105, and a second clamping ring 501 is integrally formed on one side of the clamping connection tube 105 close to the secondary expansion tube 200.

[0027] Specifically, during the process of interference-connecting the elastic protection tube 103 to the outside of the clamping connection tube 105, the elastic protection tube 103 can be further connected to the outside of the clamping connection tube 105 through the misaligned connection between the first clamping ring 500 and the second clamping ring 501. By the first clamping ring 500 and the second clamping ring 501, the friction force between the elastic protection tube 103 and the clamping connection tube 105 is further increased to form a further connection. At the same time, the first clamping ring 500 and the second clamping ring 501 can also form a clamping method to reduce the disengagement phenomenon.

[0028] As shown Figure 1 in the figure, a plurality of heat dissipation fins 700 are integrally formed on the outside of the energy storage box 100. A photovoltaic panel 600 is clamped on the energy storage box 100. The photovoltaic panel 600 forms a rain shield. The energized end of the photovoltaic panel 600 is electrically connected to the electricity storage module. A plurality of threaded mounting plates 800 are fixedly connected to the bottom of the energy storage box 100.

[0029] Specifically, through the arrangement of the plurality of external heat dissipation fins 700, the heat generated inside the energy storage box 100 can be conducted to the outside. And through the arrangement of the photovoltaic panel 600, the external light source can be absorbed to form photovoltaic energy conversion. At the same time, the photovoltaic panel 600 can form a rain shield to reduce the phenomenon of rainwater penetrating into the energy storage box 100. And through the arrangement of the threaded mounting plates 800, the staff can pass bolts through the threaded mounting plates 800 to fix the threaded mounting plates 800 to the specified positions.

[0030] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: Compared with the prior art, in this embodiment, by sleeving the elastic protection tube 103 outside the clamping connection tube 105, the connection between the clamping connection tube 105 and the clamping head 104 is sealed by the elastic protection tube 103. And in the case of forming a seal, the connection between the clamping head 104 and the clamping block 106 can be strengthened, reducing the phenomenon of misalignment and separation between the clamping head 104 and the clamping block 106. And during long-term use, the elastic protection tube 103 will not cause an increase in contact resistance due to corrosion, further reducing the phenomenon of microgrid output fluctuation.

[0031] Embodiment 2: Considering that the elastic protection tube 103 has been in contact with external corrosive substances such as salt spray during long-term use, and under long-term use, erosive substances such as fine particles of salt spray may slowly penetrate between the elastic protection tube 103 and the clamping connection tube 105. Under long-term accumulation, some erosive substances may penetrate into the interior of the elastic protection tube 103. To solve the above technical problems, the present application proposes the following technical solutions, specifically: As Figures 2 - 6 shown, the secondary sealing structure includes a secondary expansion tube 200. The secondary expansion tube 200 is fitted inside the elastic protection tube 103. A micro air pump 201 is installed inside the secondary expansion tube 200. One air outlet of the micro air pump 201 is communicated with the secondary expansion tube 200, and the other air inlet / outlet of the micro air pump 201 penetrates through the outer wall of the elastic protection tube 103.

[0032] Specifically, during the use process, after the elastic protection tube 103 is completely sleeved outside the clamping connection tube 105, the micro air pump 201 can be started regularly. When the micro air pump 201 is started, gas can be continuously injected into the interior of the secondary expansion tube 200. When the secondary expansion tube 200 expands inside the elastic protection tube 103, the connection gap between the elastic protection tube 103 and the clamping connection tube 105 can be filled, thus forming a secondary seal as a whole. In the case of forming a secondary seal, the penetration of fine particles such as salt spray can be further reduced.

[0033] As Figure 7 shown, one air inlet / outlet of the micro air pump 201 is communicated with a flow dividing valve 900. One port of the flow dividing valve 900 away from the micro air pump 201 is communicated with a second flow dividing tube 902. One end of the second flow dividing tube 902 away from the flow dividing valve 900 is communicated with the secondary expansion tube 200. The other port of the flow dividing valve 900 away from the micro air pump 201 is communicated with a first flow dividing tube 901.

[0034] Specifically, after continuously filling gas into the interior of the secondary expansion tube 200, the micro air pump 201 can also be started in reverse to concentrate the gas located inside the elastic protection tube 103 and transport it to the outside of the elastic protection tube 103 through the first flow dividing tube 901 and the flow dividing valve 900, so that a negative pressure is formed inside the elastic protection tube 103, and a negative pressure adsorption is formed as a whole, further reducing the situation of external erosive substances penetrating into the interior of the elastic protection tube 103 and causing erosion.

[0035] The technical solutions in the embodiments of the present application described above have at least the following technical effects or advantages: Compared with Embodiment 1, in this embodiment, by starting the micro air pump 201, gas can be transported into the interior of the secondary expansion tube 200 through the flow dividing valve 900 and the second flow dividing tube 902, so that the secondary expansion tube 200 expands inside the elastic protection tube 103. When the secondary expansion tube 200 expands inside the elastic protection tube 103, the secondary expansion tube 200 can assist the elastic protection tube 103 to form a further seal, further reducing the penetration of erosive substances.

[0036] Embodiment 3: Considering that when exposed to an environment with corrosive substances such as salt spray for a long time, although a secondary seal can be formed through the expansion of the secondary expansion tube 200, during the long-term use of the secondary expansion tube 200, the gas inside the secondary expansion tube 200 will gradually penetrate out of the secondary expansion tube 200 due to the continuous movement of gas molecules, resulting in a gradual decrease in the gas inside the secondary expansion tube 200. Once the gas inside the secondary expansion tube 200 gradually decreases, the sealing effect of the secondary expansion tube 200 will be relatively weakened. Then, when there are too many external erosive substances, some erosive substances will still enter the gap between the elastic protection tube 103 and the clamping tube 105. To solve the above technical problems, the present application proposes the following technical solutions: As Figure 6 shown, a plurality of carbon-based hydrogel resistor bridge blocks 300 are fixedly connected to the inner wall surface of the elastic protection tube 103 close to the clamping tube 105. The carbon-based hydrogel resistor bridge blocks 300 are electrically connected to the power storage module and the micro air pump 201 respectively.

[0037] Specifically, in the case of traditional sealing, generally, a sensor is used to detect the external salt spray situation. However, the sensor will also be exposed to corrosive substances such as salt spray, and over long-term use, the sensor will be corroded, resulting in inaccurate detection. Therefore, in the present application, a plurality of carbon-based hydrogel resistor bridge blocks 300 are used to monitor the inner circle of the elastic protection tube 103. The material in the carbon-based hydrogel resistor bridge blocks 300 is mainly graphene / carbon nanotube hydrogel with a porosity of 95%. The resistance changes with the adsorption of salt spray. When the salt spray adsorption causes the hydrogel resistance to drop by >50% and the bridge is unbalanced with a voltage difference >0.5V, the relay starts the micro air pump 201. When the micro air pump 201 is started, gas is continuously filled into the interior of the secondary expansion tube 200, so that the secondary expansion tube 200 forms an active expansion and is refilled again, thus avoiding the situation where the gas molecules inside the secondary expansion tube 200 gradually penetrate out of the secondary expansion tube 200 during long-term use, resulting in a weakened sealing performance of the secondary expansion tube 200.

[0038] Further, when the amount of external erosive substances such as salt spray decreases, the salt spray adsorption amount continuously decreases. At this time, by heating the carbon-based hydrogel resistance bridge block 300, the carbon-based hydrogel resistance bridge block 300 can be restored to its original state for the next detection.

[0039] Further, an electric heating wire is integrated inside the carbon-based hydrogel resistance bridge block 300. By heating the carbon-based hydrogel resistance bridge block 300 through the electric heating wire, the carbon-based hydrogel resistance bridge block 300 can be restored to its original state for the next detection.

[0040] The technical solution in the embodiment of the present application above has at least the following technical effects or advantages: Compared with the second embodiment, in this embodiment, through the arrangement of multiple carbon-based hydrogel resistance bridge blocks 300, when the external salt spray concentration is relatively high and the salt spray penetrates into the gap between the elastic protection tube 103 and the clamping tube 105, the carbon-based hydrogel resistance bridge block 300 can detect the presence of the salt spray, and the water gel resistance in the carbon-based hydrogel resistance bridge block 300 decreases due to adsorption. When the resistance decreases, the micro air pump 201 is activated to actively inject gas into the secondary expansion tube 200, so that the secondary expansion tube 200 is refilled again to form an active secondary seal, reducing the phenomenon of increased transmission resistance caused by salt spray erosion.

[0041] Embodiment 4: Considering that in long-term use, although the salt spray intrusion can be reduced through the elastic protection tube 103 and the secondary expansion tube 200, salt blocks will form on the outside of the elastic protection tube 103 during long-term use. Over time, the salt blocks will also slowly penetrate into the gap between the elastic protection tube 103 and the clamping tube 105. For the above technical problems, the present application proposes the following technical solution to solve the above technical problems. Specifically: As Figures 5 - 10 shown, the secondary sealing structure further includes a plurality of strip-shaped air injection holes opened on the inner wall of the secondary expansion tube 200. A plurality of electromagnetic iron plates 400 and iron positioning plates 401 are integrally formed on the inner wall of the strip-shaped air injection holes. The plurality of electromagnetic iron plates 400 and the iron positioning plates 401 adsorb each other to close the strip-shaped air injection holes, and the plurality of electromagnetic iron plates 400 simultaneously adsorb the outer periphery of the clamping tube 105.

[0042] Specifically, during use, when the carbon-based hydrogel resistance bridge block 300 detects salt mist or salt blocks, the micro air pump 201 is activated to continuously fill the secondary expansion tube 200 with gas. In the case of continuous gas filling, the secondary expansion tube 200 can form a secondary seal. And when continuously filling the secondary expansion tube 200 with gas through the micro air pump 201, more and more gas enters the secondary expansion tube 200 and the air pressure becomes higher and higher. At this time, the electromagnetic iron plate 400 needs to be powered on. The electromagnetic iron plate 400 is powered on using an additional electronic control circuit, so that the electromagnetic iron plate 400 generates magnetism. When the electromagnetic iron plate 400 is powered on using an additional electronic control circuit, the electromagnetic iron plate 400 generates magnetism. When the electromagnetic iron plate 400 generates magnetism, it can magnetically adsorb the iron positioning plate 401 and the clamping pipe 105. This is to prevent, in the case of continuous gas filling, excessive gas filling resulting in a continuous increase in air pressure. When the air pressure reaches a specified level, it will push open the fit between the iron positioning plate 401 and the electromagnetic iron plate 400, causing continuous gas leakage. And when it is necessary to clean the salt blocks with gas, the power supply to the electromagnetic iron plate 400 can be cancelled, that is, the power supply to the additional electronic control circuit is cancelled, so that the electromagnetic iron plate 400 no longer receives external power supply, and the electromagnetic iron plate 400 loses its magnetic adsorption force. When the electromagnetic iron plate 400 loses its magnetic adsorption force, the gradually increasing high-pressure gas inside the secondary expansion tube 200 will push open the fit between the iron positioning plate 401 and the electromagnetic iron plate 400, and thus spray out through the strip-shaped air holes. The high-pressure gas sprayed out through the strip-shaped air holes can spray corrosive substances such as salt blocks remaining between the elastic protection tube 103 and the clamping pipe 105 to the outside, reducing the phenomenon of continuous accumulation of corrosive substances at the middle position between the elastic protection tube 103 and the clamping pipe 105. And the determination of when to power on the electromagnetic iron plate 400 is based on the micro air pump 201. When the power of the micro air pump 201 is large and the gas filling speed is fast, the electromagnetic iron plate 400 is powered on after 5 - 10 seconds. When the power of the micro air pump 201 is small, it takes 15 - 20 seconds to power on the electromagnet 400. Specifically, a micro air pressure sensor can also be installed to detect the air pressure inside the secondary expansion tube 200, and the power supply to the electromagnetic iron plate 400 is determined based on the air pressure value.

[0043] Among them, the core principle of the carbon-based hydrogel resistance bridge block 300 detecting salt mist is based on the ion-electron synergistic conduction effect caused by the adsorption of chloride ions (Cl - )in the salt mist by the material and the resulting resistance change. Specifically, the carbon-based hydrogel resistance bridge block 300 is composed of a three-dimensional carbon network (such as graphene / carbon nanotubes) embedded in a hydrophilic polymer gel (such as polyacrylamide): the carbon network provides a high-conductivity electron transport channel, while the functional groups in the gel (such as -COO- ) Adsorb Cl in salt mist through ion exchange - When Cl - After diffusing into the gel, on the one hand, an electric double layer (EDL) is formed on the surface of the carbon material to modulate the carrier concentration; on the other hand, the gel swells, causing the carbon network contact points to separate and the overall resistance to increase significantly. This resistance change is accurately detected by the Wheatstone bridge circuit: the sensing unit (exposed to salt spray) and the temperature compensation unit (sealed and isolated) form the two arms of the bridge. Salt spray adsorption breaks the balance of the bridge and outputs an unbalanced voltage signal (ΔV). By optimizing the gel pore structure (increasing Cl - Adsorption capacity) and carbon material surface functionalization (such as sulfonic acid group modification) can achieve 0.1μg / cm² high-sensitivity detection and second-level response, while using temperature compensation and ion-selective membranes to suppress environmental interference. This technology converts the chemical adsorption of salt spray into electrical signals, providing a real-time, low-cost corrosion warning solution for marine equipment, electronic components and other scenarios. like Figure 10 As shown, a plurality of magnetic attraction plates 402 are integrally formed inside the electromagnet plate 400 .

[0044] Specifically, by providing a plurality of magnetic plates 402, when the internal pressure of the secondary expansion tube 200 is relatively low, even if the power to the electromagnet plate 400 is canceled, the magnetic plates 402 inside the electromagnet plate 400 will simultaneously adsorb the iron positioning plate 401 and the clamping tube 105, thereby ensuring the closure of the strip jet holes and driving the elastic protection tube 103 to further fit the outer wall of the clamping tube 105.

[0045] Furthermore, after the secondary expansion tube 200 continues to expand and expands to a certain extent, exhaust is performed through the strip-shaped air jet holes, so that the secondary expansion tube 200 can drive the elastic protection tube 103 to expand and contract during the expansion and contraction process, thereby forming a peristaltic extrusion effect as a whole. When the peristaltic extrusion effect is formed, the salt block formed outside the elastic protection tube 103 can be squeezed. When the salt block is squeezed, the salt block can be broken. After the salt block is broken, the gas ejected from the strip-shaped air jet holes can be used to smoothly clean the salt block between the elastic protection tube 103 and the clamping tube 105.

[0046] The technical solutions in the embodiments of the present application described above have at least the following technical effects or advantages: Compared with Embodiment III, in this embodiment, when continuously filling gas into the secondary expansion tube 200, the energization of the electromagnetic iron plate 400 can be cancelled, so that the electromagnetic iron plate 400 no longer adsorbs the iron positioning plate 401. Thus, under the top pressure of the stronger air pressure inside the secondary expansion tube 200, the strip-shaped air holes are pushed open, and the gas is ejected through the strip-shaped air holes between the elastic protection tube 103 and the clamping connection tube 105 to clean the space between the elastic protection tube 103 and the clamping connection tube 105.

[0047] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy storage device applied to a microgrid, characterized in that: include: An energy storage box (100), wherein a generator (101) is installed inside the energy storage box (100), a fan blade (107) is installed on the output shaft of the generator (101), and a sealed connection structure is connected to the outside of the generator (101); The sealing connection structure comprises a card tube (105) fixedly connected to the outside of the generator (101); the card tube (105) is sleeved with an elastic protection tube (103) on the outside in an interference fit; a transmission structure is installed inside the elastic protection tube (103); the transmission structure is used to connect the card tube (105) and an electricity storage module installed inside the energy storage box (100); a secondary sealing structure is installed inside the elastic protection tube (103); the secondary sealing structure is used to fill the inside of the elastic protection tube (103) to form an active replacement seal.

2. The energy storage device applied to a microgrid according to claim 1, characterized in that: The secondary sealing structure comprises a secondary expansion tube (200), wherein the secondary expansion tube (200) is embedded in the interior of the elastic protection tube (103), and a micro air pump (201) is installed in the interior of the secondary expansion tube (200), wherein one of the air outlets of the micro air pump (201) is connected to the secondary expansion tube (200), and the other air inlet and outlet of the micro air pump (201) penetrates the outer wall of the elastic protection tube (103).

3. The energy storage device applied to a microgrid according to claim 2, characterized in that: A plurality of carbon-based hydrogel resistance bridge blocks (300) are fixedly connected to the inner wall surface of the elastic protection tube (103) close to the clamping tube (105), and the carbon-based hydrogel resistance bridge blocks (300) are electrically connected to the power storage module and the micro air pump (201) respectively.

4. The energy storage device applied to a microgrid according to claim 3, characterized in that: The secondary sealing structure also includes a plurality of strip-shaped air injection holes formed on the inner wall of the secondary expansion tube (200), wherein the inner wall of the strip-shaped air injection holes is integrally formed with a plurality of electromagnet plates (400) and an iron positioning plate (401), wherein the plurality of electromagnet plates (400) and the iron positioning plate (401) are mutually adsorbed to form a closure for the strip-shaped air injection holes, and the plurality of electromagnet plates (400) simultaneously adsorb the outer periphery of the card tube (105).

5. The energy storage device applied to a microgrid according to claim 4, characterized in that: A plurality of magnetic attraction plates (402) are integrally formed inside the electromagnet plate (400).

6. The energy storage device applied to a microgrid according to claim 1, characterized in that: The transmission structure comprises a conducting wire (102) fixedly connected to the inside of the elastic protection tube (103); one end of the conducting wire (102) is fixedly connected to a clamping joint (104); the inside of the clamping tube (105) is fixedly connected to a plurality of clamping blocks (106); the clamping joint (104) is plugged into the inside of the clamping tube (105) and is staggeredly clamped to the plurality of clamping blocks (106).

7. The energy storage device applied to a microgrid according to claim 5, characterized in that: A first clamping ring (500) is fixedly connected to the inner wall surface of one side of the elastic protection tube (103) close to the clamping tube (105), and a second clamping ring (501) is integrally formed on one side of the clamping tube (105) close to the secondary expansion tube (200).

8. The energy storage device applied to a microgrid according to claim 1, characterized in that: The energy storage box (100) is integrally formed with a plurality of heat dissipation fins (700) on the outside.

9. The energy storage device applied to a microgrid according to claim 1, characterized in that: A photovoltaic panel (600) is clamped onto the energy storage box (100), the photovoltaic panel (600) forms a rain shield, the power supply end of the photovoltaic panel (600) is electrically connected to the power storage module, and a plurality of threaded mounting plates (800) are fixedly connected to the bottom of the energy storage box (100).

10. The energy storage device applied to a microgrid according to claim 7, characterized in that: One of the air inlets and outlets of the micro air pump (201) is connected to a diverter valve (900), one of the ports of the diverter valve (900) away from the micro air pump (201) is connected to a second diverter tube (902), one end of the second diverter tube (902) away from the diverter valve (900) is connected to the secondary expansion tube (200), and the other port of the diverter valve (900) away from the micro air pump (201) is connected to the first diverter tube (901).

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