Alcohol hydrogen fuel energy bin for automobile charging pile

Abstract

The invention relates to the technical field of power supply, and discloses an alcohol-hydrogen fuel energy bin for an automobile charging pile, which adopts a modular design and comprises a methanol storage module, a reforming hydrogen production module, a fuel cell module and an electric control module, and each module realizes convenient disassembly and assembly through a standardized quick connection interface; the methanol storage module adopts a double-layer protection storage tank structure, is provided with a liquid level and pressure monitoring device and is in real-time communication with the electric control module; the bottom cofferdam and the impermeable film are arranged to prevent leakage and diffusion; the spraying assembly adsorbs leaked methanol through an adsorbent; the plugging assembly automatically closes a sealing semi-ring to realize physical plugging by utilizing the temperature-sensitive characteristic of a shape memory alloy when detecting that the temperature is suddenly reduced; on one hand, the installation and maintenance efficiency is improved through the modular design; and on the other hand, a monitoring-adsorption-plugging three-stage protection system is constructed at the same time, the safety of the methanol hydrogen energy system is improved, and the methanol hydrogen energy system is particularly suitable for energy supply of off-grid charging piles in remote areas.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and in particular to an alcohol-hydrogen fuel energy tank for a car charging pile. Background Art

[0002] With the booming development of new energy vehicles, alcohol-hydrogen fuel cell tanks, as an innovative energy supply unit, offer a new energy solution for vehicle charging stations. However, existing alcohol-hydrogen fuel cell tanks have numerous structural design issues, particularly regarding detachable modularization and methanol leak emergency protection.

[0003] Traditional alcohol-hydrogen fuel cell tanks are typically monolithic structures, with all functional components integrated into a single, inseparable chamber. This presents significant challenges during transportation and installation, particularly in remote areas or confined spaces where large transport equipment is difficult to reach and the monolithic tanks cannot be smoothly transported and installed. Furthermore, if a component within the tank fails, maintenance personnel struggle to replace or repair it individually due to its non-detachable nature. Disassembly of the entire tank is often necessary, consuming significant time and labor costs, resulting in extended equipment downtime and severely impacting the normal use of the charging station.

[0004] Methanol, the core fuel in alcohol-hydrogen fuel energy tanks, is flammable and volatile, and its leakage risk has always been a key safety concern. Existing energy tanks lack comprehensive emergency leak protection mechanisms for methanol storage and transportation. Some energy tanks use only simple single-layer tanks to store methanol, which are prone to methanol leaks when impacted by external forces or due to tank aging. Once a leak occurs, most existing energy tanks are not equipped with fast and effective leak-blocking devices, making it impossible to promptly cut off the methanol leak path, resulting in continued methanol leakage, which can easily cause fires or even explosions. Summary of the Invention

[0005] The purpose of the present invention is to provide an alcohol-hydrogen fuel energy tank for a car charging pile to solve at least one of the above technical problems.

[0006] The purpose of the present invention can be achieved through the following technical solutions: An alcohol-hydrogen fuel energy tank for a vehicle charging pile includes a tank body, in which a plurality of detachable modular components are arranged. The modular components include a methanol storage module, a reforming hydrogen production module, a fuel cell module, and an electronic control module. The modular components are connected via standardized quick-connect interfaces. The methanol storage module adopts a detachable tank structure, which includes an inner tank and an outer protective layer, which are fixed together by detachable connectors. The methanol storage module is also equipped with a liquid level monitoring device and a pressure monitoring device. The liquid level monitoring device and the pressure monitoring device are connected to the electronic control module to provide real-time feedback on the methanol storage status. An emergency protection mechanism is also provided in the warehouse for emergency treatment when methanol leakage occurs in the methanol storage module.

[0007] Furthermore, the emergency protection mechanism includes a cofferdam and a spray assembly; The cofferdam is set around the bottom of the storage tank and is made of concrete. The bottom of the cofferdam is paved with an anti-permeability membrane. The bottom of the cofferdam is also equipped with a methanol leak detector, which will immediately activate the spray assembly once a leak is detected. The spray assembly includes a nozzle arranged in an annular manner above the storage tank, a pneumatic conveying device and an adsorbent storage tank. The nozzle is connected to the pneumatic conveying device through a powder conveying pipe with a solenoid valve. The adsorbent storage tank arranged on one side of the warehouse is filled with solid adsorbent. When the methanol leak detector detects a leak, the electronic control module synchronously starts the pneumatic conveying device and the solenoid valve, and the nozzle atomizes and sprays out the solid adsorbent to form an adsorption barrier covering the surface of the tank.

[0008] Furthermore, the emergency protection mechanism also includes a sealing component, which is used to seal when a leak occurs in the storage tank.

[0009] Furthermore, the sealing component includes a temperature sensor and a sealing unit. The temperature sensor is arranged at the bottom of the outer wall of the storage tank and is used to monitor the temperature around the bottom of the storage tank in real time. When the temperature drop value within a set period exceeds a set threshold, the sealing unit is driven to seal the bottom of the storage tank.

[0010] Furthermore, the sealing unit includes two brackets, the brackets being provided with two brackets, and the middle portions of the two brackets being hinged to form an active point, one end of the two brackets being connected by a shape memory alloy sheet, and the other end being fixedly connected by an elastic connecting rope, and two symmetrically distributed sealing half rings being provided at positions between the active point and the shape memory alloy sheet on the two brackets; A sealing body is provided on the inner side of the sealing half ring. The sealing body is a hollow structure made of silicone rubber and filled with compressible inert gas. The hinge between the two brackets is fixed to the outer wall of the storage tank through a connecting shaft.

[0011] Furthermore, the emergency protection mechanism also includes a balancing component, which is used to enable the sealing unit to operate in conjunction when methanol liquid accumulates in the cofferdam.

[0012] Furthermore, the balancing component includes a siphon tube, and a float valve is provided at the inlet of the siphon tube. The float valve is normally closed. When the cofferdam liquid level exceeds a threshold, the float floats up to open the valve, and the pressure difference between the inside and outside of the siphon tube drives the drainage. One end of the siphon tube is inserted into the bottom of the cofferdam, and the other end is connected to the corresponding groove on the top of the counterweight slider. The counterweight slider is slidably connected to the slide rail obliquely arranged on the inner wall of the cofferdam. When methanol liquid accumulates in the cofferdam, the siphon tube drains the liquid into the counterweight slider. After the counterweight of the counterweight slider increases, it slides down along the slide rail, pulling the hook through the cable, and the hook pulls the shape memory alloy sheet upward to deform, thereby closing the two sealing half rings.

[0013] Furthermore, the balancing assembly also includes a hook, which is an L-shaped metal rod. The short arm end of the hook is located below the middle area of the shape memory alloy sheet, and the long arm end of the hook is provided with a through hole. One end of the cable passes through the through hole and is knotted to limit the position, and the other end is fixedly connected to the counterweight slider after passing around the pulley; when the counterweight slider slides down, the cable applies a vertical upward pulling force to the shape memory alloy sheet through the long arm end of the hook, forcing the shape memory alloy sheet to bend and deform.

[0014] Beneficial effects of the present invention: (1) The present invention realizes the rapid disassembly and transportation of the energy warehouse through the cooperation of detachable modular components, including a methanol storage module, a reforming hydrogen production module, a fuel cell module and an electronic control module, as well as standardized quick connection interfaces; when a single module is damaged, it can be directly replaced, avoiding the large-scale disassembly and repair of the traditional integrated structure, thereby reducing maintenance costs and downtime, and is particularly suitable for the deployment of charging piles in remote areas.

[0015] (2) To ensure safety, the present invention constructs a comprehensive protection system of monitoring, blocking and adsorption, and realizes three-level linkage emergency protection. First, the liquid level / pressure monitoring captures abnormalities in real time. Once methanol leaks, it absorbs heat and causes the temperature to drop, triggering the low-temperature contraction of the shape memory alloy sheet, driving the sealing semi-ring to close, and quickly physically blocking the source. Second, the adsorbent covers the leakage area for adsorption, forming an environmental barrier. Third, the cofferdam and anti-seepage membrane provide dual barriers to prevent soil and groundwater pollution. The above scheme does not require external power, can respond autonomously, and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is an external schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the storage tank in the present invention; Figure 3 Schematic diagram of the structure of the blocking component in the present invention; Figure 4 for Figure 3 Schematic diagram from another angle; Figure 5 It is a structural schematic diagram of the balancing component in the present invention.

[0018] Description of the drawings: 1. Warehouse body; 2. Storage tank; 21. Inner liner; 22. Outer protective layer; 23. Connecting parts; 3. Emergency protection mechanism; 31. Cofferdam; 32. Spraying assembly; 321. Nozzle; 322. Pneumatic conveying device; 323. Adsorbent storage tank; 33. Anti-permeability membrane; 34. Methanol leak detector; 35. Sealing assembly; 351. Temperature sensor; 352. Bracket; 353. Shape memory alloy sheet; 354. Elastic connecting rope; 355. Sealing half ring; 356. Sealing body; 357. Connecting shaft; 36. Balance assembly; 361. Siphon; 362. Float valve; 363. Counterweight slider; 364. Container; 365. Slide rail; 366. Cable; 367. Hook. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 5 As shown, the present invention is an alcohol hydrogen fuel energy tank for automobile charging piles, comprising a tank body 1, in which a plurality of detachable modular components are arranged, the modular components including a methanol storage module, a reforming hydrogen production module, a fuel cell module and an electronic control module; the modular components are connected by standardized quick connection interfaces; The methanol storage module uses a detachable storage tank 2 structure, which includes an inner liner 21 and an outer protective layer 22. The inner liner 21 and the outer protective layer 22 are fixed by a detachable connector 23. The methanol storage module is also equipped with a liquid level monitoring device and a pressure monitoring device. The liquid level monitoring device and the pressure monitoring device are communicatively connected to the electronic control module for real-time feedback on the methanol storage status. An emergency protection mechanism 3 is also provided in the warehouse body 1 for performing emergency treatment when methanol leakage occurs in the methanol storage module.

[0021] In the present invention, in order to solve the various adverse effects brought about by the integration of various functional components in an inseparable cabin, the various components in the cabin are set as detachable modular components and connected through quick connection interfaces, so that they can be transported separately during transportation and quickly assembled after reaching the charging pile installation area to improve transportation convenience; at the same time, if a component is damaged during subsequent use, there is no need to carry out a large amount of difficult disassembly and maintenance, only the corresponding module needs to be removed after the various interfaces are disconnected. If the degree of damage is serious, the module component can be directly replaced. Compared with the traditional integrated fuel tank, maintenance and replacement are more convenient; and in order to deal with the dangers of methanol Especially when used as a power supply unit for charging piles in remote areas, if a danger occurs, it is impossible to notify personnel in time to deal with it. Once an accident occurs, it is very likely that a major charging pile damage accident will occur. Therefore, the present invention also equips the methanol storage module with a liquid level monitoring device and a pressure monitoring device separately. The liquid level monitoring device and the pressure monitoring device are communicated with the electronic control module for real-time feedback of the methanol storage status. Once the liquid level and pressure change, the electronic control module can be notified and processed in time to reduce the danger caused by methanol leakage. Finally, an emergency protection mechanism 3 is also provided in the warehouse body 1 for emergency treatment when methanol leakage occurs in the methanol storage module to further reduce the harm caused by methanol leakage.

[0022] The quick connection interface includes but is not limited to a flange connection interface, a quick-insert pipe connection interface and a standardized electrical connection interface, so as to realize the rapid connection of fuel, gas and electricity between modules and enable rapid separation during disassembly.

[0023] The emergency protection mechanism 3 includes a cofferdam 31 and a spray assembly 32; A cofferdam 31 is provided around the bottom of the storage tank 2 and is made of concrete. An anti-permeation membrane 33 is laid on the bottom of the cofferdam 31. A methanol leak detector 34 is also provided at the bottom of the cofferdam 31. Once a leak is detected, a spray assembly 32 is immediately activated. The spray assembly 32 includes a nozzle 321 arranged in an annular manner above the storage tank, a pneumatic conveying device 322, and an adsorbent storage tank 323. The nozzle 321 is connected to the pneumatic conveying device 322 via a powder conveying pipe with a solenoid valve. The adsorbent storage tank 323 provided on one side of the silo 1 is filled with solid adsorbent. When the methanol leak detector 34 detects a leak, the electronic control module synchronously starts the pneumatic conveying device 322 and the solenoid valve, and the nozzle 321 atomizes and sprays the solid adsorbent to form an adsorption barrier covering the surface of the storage tank.

[0024] The solid adsorbent is porous adsorption particles or powder, such as activated carbon; the pneumatic conveying device includes an air compressor, an air storage tank and a screw feeder. The screw feeder is arranged at the bottom of the adsorbent storage tank 323 and is used to control the conveying rate of the solid adsorbent; the nozzle 321 is a Venturi-type dry powder injection nozzle, which uses compressed air to spray the solid adsorbent in a direction.

[0025] In the present invention, when methanol leakage occurs in the methanol storage module, the cofferdam 31 located around the bottom of the storage tank 2 can prevent the leaked methanol from spreading, and the anti-permeability membrane 33 laid at the bottom can prevent the methanol from seeping into the ground and causing soil and groundwater pollution; at the same time, the methanol leakage detector 34 at the bottom of the cofferdam 31 monitors the methanol leakage in real time. Once a methanol leakage is detected, it will immediately transmit a signal to the electronic control module; after receiving the signal, the electronic control module synchronously starts the pneumatic conveying device 322 and the solenoid valve. The pneumatic conveying device 322 uses compressed air to convey the adsorbent conveyed in the adsorbent storage tank 323 to the nozzle 321 arranged in an annular manner above the storage tank 2 through the powder conveying pipe. The nozzle 321 sprays the adsorbent and utilizes the adsorption effect of the adsorbent to form an adsorption barrier covering the surface of the storage tank 2, thereby adsorbing the leaked methanol; Through the above technical solution, the cofferdam 31, anti-permeability membrane 33, methanol leak detector 34, pneumatic conveying device 322, solenoid valve, nozzle 321 and adsorbent storage tank 323 form a tightly coordinated whole. The cofferdam 31 limits the diffusion of methanol, buying time for subsequent adsorption treatment, and at the same time defines a relatively fixed area for the leaked methanol, facilitating precise coverage of the adsorbent sprayed from the nozzle 321. The anti-permeability membrane 33 forms a protective barrier underground, echoing the adsorption barrier above, and comprehensively blocking the path of methanol pollution to the environment. Once the methanol leak detector 34 is triggered, it immediately activates the pneumatic conveying device 322 and solenoid valve to promptly spray the adsorbent. The various components are closely linked and work together, and through an efficient linkage mechanism, the harm caused by methanol leakage is minimized. The present invention prevents methanol from seeping into the soil and contaminating groundwater, thereby achieving ecological protection of the soil; it also reduces the corrosion and damage of methanol to other components of the energy bin by timely absorbing leaked methanol, thereby extending the service life of the equipment and reducing equipment maintenance costs; thereby reducing the risk of fire and explosion safety accidents caused by methanol leakage, and at the same time reducing the direct harm of methanol to surrounding staff and passers-by, thereby protecting the lives and health of people; in addition, it can also improve the safety and reliability of the alcohol-hydrogen fuel energy bin for automobile charging piles during use.

[0026] The emergency protection mechanism 3 further includes a blocking component 35, which is used to block the storage tank 2 when leakage occurs; The sealing assembly 35 includes a temperature sensor 351 and a sealing unit. The temperature sensor 351 is arranged at the bottom of the outer wall of the storage tank 2 and is used to monitor the temperature around the bottom of the storage tank 2 in real time. When the temperature drop value exceeds the set threshold within a set time period, the sealing unit is driven to seal the bottom of the storage tank 2.

[0027] The sealing unit includes two brackets 352, each of which is hinged at the middle to form a movable point. One end of the two brackets 352 is connected by a shape memory alloy sheet 353, and the other end is fixedly connected by an elastic connecting rope 354. Two symmetrically distributed sealing half rings 355 are provided between the movable point and the shape memory alloy sheet 353 on the two brackets 352. A sealing body 356 is provided on the inner side of the sealing half ring 355. The sealing body 356 is a hollow structure made of silicone rubber and filled with compressible inert gas. The hinge between the two brackets 352 is fixed to the outer wall of the storage tank 2 through a connecting shaft 357.

[0028] In the present invention, the temperature sensor 351 continuously monitors the temperature at the bottom of the outer wall of the storage tank 2. Since methanol absorbs a large amount of heat when volatilizing, once the storage tank 2 leaks, the ambient temperature around its bottom will drop rapidly. When the temperature drop exceeds a preset threshold within a set period of time, the temperature sensor 351 will immediately sense this change and transmit a signal to the entire emergency protection system, triggering the operation of the sealing unit. At this time, the shape memory alloy sheet 353 made of low-temperature phase-change shape memory alloy plays a key role; when the temperature drops, the shape memory alloy sheet 353 undergoes a martensitic phase transformation, transforming from a high-temperature phase austenite to a low-temperature phase martensite, and in this process the alloy sheet shrinks and deforms; under normal conditions, the shape memory alloy sheet 353 is in the austenitic phase, maintaining the open shape of the two brackets 352, one end of the bracket 352 is connected by it, and the other end is fixed by an elastic connecting rope 354; when the leakage causes the temperature to drop, the alloy sheet enters the martensitic phase and shrinks and deforms, and the above-mentioned shrinkage force overcomes the tension of the elastic connecting rope 354, pulling the bracket 352 open. 52 rotates around the active point in the middle; as the bracket 352 rotates, the two symmetrically distributed sealing semi-rings 355 on the bracket 352 gradually close toward the bottom of the storage tank 2; the inner side of the sealing semi-ring 355 is made of a hollow structure made of silicone rubber, and the interior is filled with compressible inert gas. During the closing process, the sealing body 356 is squeezed and the internal inert gas is compressed, causing the sealing body 356 to fit tightly against the leak at the bottom of the storage tank 2; relying on the pressure generated by the compressed inert gas and the good sealing properties of the silicone rubber, the leaking part is quickly and efficiently blocked, effectively preventing further leakage of methanol and reducing the safety risks caused by methanol leakage; The above technical solution further improves the emergency protection mechanism 3 by providing a plugging component 35. In the early stage of methanol leakage, the temperature sensor 351 can promptly capture the leakage signal through temperature changes. Compared with the traditional method that relies on liquid detection, the potential leakage risk can be discovered earlier, and more time for emergency treatment can be gained. The unique structural design of the sealing unit utilizes the synergistic effect of the shape memory alloy sheet 353 and the elastic connecting rope 354 to achieve automatic and rapid sealing without manual intervention. It is particularly suitable for unmanned automobile charging pile alcohol hydrogen fuel energy storage in remote areas. At the same time, the structure of the sealing half ring 355 and the sealing body 356 can fit tightly to the bottom of the storage tank 2, effectively preventing the continuous leakage of methanol and reducing the leakage amount. Finally, in conjunction with the spraying component 32, the plugging component 35 reduces methanol leakage at the source, and the spraying component 32 absorbs the leaked methanol. The two work together to significantly reduce the possibility of methanol leakage causing harm to the environment, equipment and personnel, further improving the safety and reliability of the energy storage, and also reducing the equipment maintenance cost and energy waste caused by methanol leakage.

[0029] The shape memory alloy in the present invention can be Nitinol alloy: the phase transition temperature can be adjusted to 0-25°C; by adjusting the proportions of each element in the alloy and performing a specific heat treatment process, the martensitic phase transition temperature range of the Nitinol alloy can be placed in a low temperature range suitable for methanol leakage scenarios, thereby meeting the needs of the energy warehouse emergency protection mechanism 3 under this working condition.

[0030] The emergency protection mechanism 3 further includes a balancing component 36 , which is used to cause the sealing units to operate in conjunction when methanol liquid accumulates in the cofferdam 31 .

[0031] The balancing assembly 36 includes a siphon tube 361 , at the inlet of which is provided a float valve 362 . The float valve 362 is normally closed. When the liquid level in the cofferdam 31 exceeds a threshold, the float rises to open the valve, and the pressure difference between the inside and outside of the siphon tube 361 drives the drainage. One end of the siphon tube 361 is inserted into the bottom of the cofferdam 31, and the other end is connected to the corresponding groove 364 on the top of the counterweight slider 363. The counterweight slider 363 is slidably connected to the slide rail 365 arranged obliquely on the inner wall of the cofferdam 31; When methanol liquid accumulates in the cofferdam 31, the siphon tube 361 drains the liquid into the counterweight slider 363. After the counterweight of the counterweight slider 363 increases, it slides down along the slide rail 365, and the pull hook 367 is pulled by the cable 366. The pull hook 367 pulls the shape memory alloy sheet 353 upward to deform, thereby closing the two sealing half rings 355.

[0032] The balancing assembly 36 also includes a hook 367, which is an L-shaped metal rod. The short arm end of the hook is located below the middle area of the shape memory alloy sheet 353, and the long arm end of the hook is provided with a through hole. One end of the cable 366 passes through the through hole and is tied to a limit position, and the other end is fixedly connected to the counterweight slider 363 after passing around the pulley; when the counterweight slider 363 slides down, the cable 366 applies a vertical upward pulling force to the shape memory alloy sheet 353 through the long arm end of the hook 367, forcing the shape memory alloy sheet 353 to bend and deform.

[0033] It should be noted that after the leaked methanol level in the cofferdam 31 rises, the height difference with the container of the counterweight slider 363 at the outlet end generates a sufficient pressure difference to drive the siphon to continue.

[0034] In the present invention, when a leak occurs in the storage tank 2, methanol liquid flows into the cofferdam 31, and the liquid level rises to a set threshold, triggering the float valve 362 to open, and the siphon tube 361 to start drainage; the siphon tube 361 introduces the leaked methanol into the receptacle 364 of the counterweight slider 363. After the counterweight is increased, the slider slides down along the inclined slide rail 365. When the counterweight slider 363 slides down, the long arm end of the hook 367 is pulled by the cable 366, applying a vertical upward pulling force to the shape memory alloy sheet 353; the shape memory alloy sheet 353 bends and deforms under tension, causing the distance between the connecting ends of the two brackets 352 to shorten, forcing the sealing half ring 355 to rotate radially inward until the silicone rubber seal 356 presses against the outer wall of the storage tank 2, achieving physical sealing; As an embodiment, if the siphon mechanism is not fully triggered, the temperature at the bottom of the storage tank 2 drops sharply due to the heat absorption of methanol volatilization. After the temperature sensor 351 detects the abnormality, the electronic control module energizes the shape memory alloy sheet 353 to assist it in deformation and closure.

[0035] Through the above technical solution, on the one hand, the balancing component 36 realizes automated emergency response through a siphon and counterweight mechanism. The combination of the siphon tube 361 and the float valve 362 can accurately sense the change of the methanol liquid level in the cofferdam 31. When the liquid level exceeds the threshold, the siphon effect is triggered, and the leaked methanol is diverted to the receptacle 364 of the counterweight slider 363. The slider slides down along the slide rail 365 due to the increased weight, and the blockage can be quickly initiated without human intervention. This effectively avoids the risks caused by human operation delays or errors, and greatly improves the timeliness of the energy warehouse's response to the initial stage of methanol leakage. On the other hand, the balancing component 36 is closely linked with the temperature sensor 351 and the shape memory alloy sheet 353. When the siphon mechanism fails to take full effect, the temperature sensor 351 detects an abnormal drop in the temperature at the bottom of the storage tank 2 and immediately transmits a signal to the electronic control module. The electronic control module assists the shape memory alloy sheet 353 in deforming by powering on. At the same time, the mechanical tension generated by the downward movement of the counterweight slider 363 also acts on the shape memory alloy sheet 353. The dual triggering mechanism ensures that the sealing half ring 355 quickly completes the sealing action. The above-mentioned mechanical and electronic control linkage design realizes all-round and no-dead-angle protection against methanol leakage, ensuring the safe and stable operation of the alcohol-hydrogen fuel energy storage for automobile charging piles under complex working conditions.

[0036] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An alcohol hydrogen fuel energy tank for a car charging pile, characterized in that: It includes a warehouse body, in which a plurality of detachable modular components are arranged. The modular components include a methanol storage module, a reforming hydrogen production module, a fuel cell module and an electronic control module. The modular components are connected through standardized quick connection interfaces. The methanol storage module adopts a detachable tank structure, which includes an inner tank and an outer protective layer, which are fixed together by detachable connectors. The methanol storage module is also equipped with a liquid level monitoring device and a pressure monitoring device. The liquid level monitoring device and the pressure monitoring device are connected to the electronic control module to provide real-time feedback on the methanol storage status. An emergency protection mechanism is also provided in the warehouse for emergency treatment when methanol leakage occurs in the methanol storage module.

2. The alcohol hydrogen fuel energy tank for automobile charging pile according to claim 1 is characterized in that: Emergency protection mechanisms include cofferdams and spraying components; The cofferdam is set around the bottom of the storage tank and is made of concrete. The bottom of the cofferdam is paved with an anti-permeability membrane. The bottom of the cofferdam is also equipped with a methanol leak detector, which will immediately activate the spray assembly once a leak is detected. The spray assembly includes a nozzle arranged in an annular manner above the storage tank, a pneumatic conveying device and an adsorbent storage tank. The nozzle is connected to the pneumatic conveying device through a powder conveying pipe with a solenoid valve. The adsorbent storage tank arranged on one side of the warehouse is filled with solid adsorbent. When the methanol leak detector detects a leak, the electronic control module synchronously starts the pneumatic conveying device and the solenoid valve, and the nozzle atomizes and sprays out the solid adsorbent to form an adsorption barrier covering the surface of the tank.

3. The alcohol hydrogen fuel energy bin for automobile charging pile according to claim 1 or 2, characterized in that: The emergency protection mechanism also includes a plugging component, which is used to seal the tank when it leaks.

4. The alcohol hydrogen fuel energy tank for automobile charging pile according to claim 3 is characterized in that: The sealing component includes a temperature sensor and a sealing unit. The temperature sensor is set at the bottom of the outer wall of the storage tank and is used to monitor the temperature around the bottom of the storage tank in real time. When the temperature drop value exceeds the set threshold within a set period of time, the sealing unit is driven to seal the bottom of the storage tank.

5. The alcohol hydrogen fuel energy tank for automobile charging pile according to claim 4 is characterized in that: The sealing unit includes two brackets, each of which is hinged in the middle to form an active point. One end of the two brackets is connected by a shape memory alloy sheet, and the other end is fixedly connected by an elastic connecting rope. Two symmetrically distributed sealing half rings are provided between the active point and the shape memory alloy sheet. A sealing body is provided on the inner side of the sealing half ring. The sealing body is a hollow structure made of silicone rubber and filled with compressible inert gas. The hinge between the two brackets is fixed to the outer wall of the storage tank through a connecting shaft.

6. The alcohol hydrogen fuel energy tank for automobile charging pile according to claim 5, characterized in that: The emergency protection mechanism also includes a balancing component, which is used to enable the sealing unit to act in conjunction when methanol liquid accumulates in the cofferdam.

7. The alcohol hydrogen fuel energy tank for automobile charging pile according to claim 6, characterized in that: The balancing component includes a siphon tube with a float valve at the inlet. The float valve is normally closed. When the cofferdam liquid level exceeds the threshold, the float rises to open the valve, and the pressure difference between the inside and outside of the siphon tube drives the drainage. One end of the siphon tube is inserted into the bottom of the cofferdam, and the other end is connected to the corresponding groove on the top of the counterweight slider. The counterweight slider is slidably connected to the slide rail obliquely arranged on the inner wall of the cofferdam. When methanol liquid accumulates in the cofferdam, the siphon tube drains the liquid into the counterweight slider. After the counterweight of the counterweight slider increases, it slides down along the slide rail, pulling the hook through the cable, and the hook pulls the shape memory alloy sheet upward to deform, thereby closing the two sealing half rings.

8. The alcohol hydrogen fuel energy tank for automobile charging pile according to claim 7, characterized in that: The balancing assembly also includes a hook, which is an L-shaped metal rod. The short arm end of the hook is located below the middle area of the shape memory alloy sheet, and the long arm end of the hook is provided with a through hole. One end of the cable passes through the through hole and is knotted to limit the position, and the other end passes around the pulley and is fixedly connected to the counterweight slider; when the counterweight slider slides down, the cable applies a vertical upward pulling force to the shape memory alloy sheet through the long arm end of the hook, forcing the shape memory alloy sheet to bend and deform.

Images