Underwater fuel cell hydrogen supply system

Abstract

The utility model relates to an underwater fuel cell hydrogen supply system. The system comprises a main hydrogen supply part used for providing hydrogen through aluminum water hydrogen production; the auxiliary hydrogen supply part is used for providing hydrogen with balanced pressure in the reaction process of the main hydrogen supply part; the hydrogen power supply part is used for obtaining hydrogen to react to generate electric energy for power supply operation; the product processing part is used for monitoring and processing products generated by the hydrogen power supply part; and the circulating part is used for carrying out recycling operation on a product generated by the hydrogen power supply part. The safety risk caused by the fact that the fuel cell UUV carries a large-specification hydrogen storage bottle and an oxygen storage bottle at the same time is reduced; as a relatively safe hydrogen storage material, the aluminum-based material is more convenient to fill and fill; the product water in the running process of the fuel cell is effectively recycled, and the problem that the fuel cell UUV carrying a hydrogen bottle and an oxygen bottle needs to carry a water storage tank on the premise that water is not needed is solved.

Description

Technical Field

[0001] The present application relates to the technical field of fuel cell hydrogen supply systems, and in particular to an underwater fuel cell hydrogen supply system. Background Art

[0002] Hydrogen-oxygen fuel cells use hydrogen as fuel and oxygen as oxidant, and directly convert the chemical energy of the fuel into electrical energy through electrochemical reactions. They are not limited by the Carnot cycle, and the theoretical power generation efficiency can reach 85% to 90%. The only reaction product is water, which is green and efficient. It is an energy conversion system with broad prospects. At present, the application scenarios of fuel cells are mainly road vehicles and cogeneration fixed power generation. However, in special segments, fuel cells are more suitable as the power system of underwater unmanned submersibles. Compared with lithium-ion power systems, they have the advantages of high power density, long cruising range, and light weight; compared with gas engine power systems, they have the advantages of low vibration and noise, and almost no tail exhaust.

[0003] In a closed underwater scene, the more fuel, or hydrogen, a fuel cell underwater unmanned submersible carries, the longer it will work and the fewer times it will need to surface to refuel. The main method of hydrogen supply for fuel cell underwater unmanned submersibles is simple hydrogen bottles.

[0004] In the related art, for fuel cell underwater unmanned submersibles, high pressure in the hydrogen storage bottle increases the risk factor, while low pressure shortens the cruising range. Utility Model Content

[0005] Based on this, it is necessary to provide an underwater fuel cell hydrogen supply system to address the problems of fuel cell underwater unmanned submersibles, where high pressure in the hydrogen storage bottle increases the risk factor and low pressure shortens the cruising range.

[0006] In a first aspect, the present application provides an underwater fuel cell hydrogen supply system, the system comprising: a main hydrogen supply component, the main hydrogen supply component is used to provide hydrogen by producing hydrogen through aluminum water;

[0007] An auxiliary hydrogen supply component, which is used to provide hydrogen with a balanced pressure during the reaction process of the main hydrogen supply component;

[0008] A hydrogen power supply component, the hydrogen power supply component is used to obtain hydrogen reaction to generate electrical energy for power supply operation;

[0009] A product processing component, the product processing component is used to monitor and process the product generated by the hydrogen power supply component;

[0010] The circulation component is used to recover and circulate the product generated by the hydrogen power supply component.

[0011] In one embodiment, the main hydrogen supply component includes:

[0012] Aluminum molten hydrogen production reaction chamber, wherein the aluminum molten hydrogen production reaction chamber is filled with aluminum powder, and the aluminum molten hydrogen production reaction chamber is connected to a shower head, wherein the shower head is provided with a water spray assembly, wherein the water spray assembly is connected to a water tank through a water supply pump, and a water supply one-way valve is further provided between the water spray assembly and the water supply pump, and a water supply pressure sensor is further provided between the water spray assembly and the water supply one-way valve;

[0013] The aluminum liquid hydrogen production reaction chamber is also connected to a hydrogen production solenoid valve, and a hydrogen production one-way valve is provided at one end of the hydrogen production solenoid valve away from the aluminum liquid hydrogen production reaction chamber. A hydrogen production chamber outlet temperature and pressure sensor is provided between the aluminum liquid hydrogen production reaction chamber and the hydrogen production solenoid valve, and one end of the hydrogen production one-way valve away from the hydrogen production solenoid valve is connected to a hydrogen power supply component.

[0014] In one embodiment, the auxiliary hydrogen supply component includes:

[0015] A hydrogen storage bottle, wherein the hydrogen storage bottle is connected to a pressure reducing valve via a hydrogen bottle pressure sensor, a hydrogen bottle solenoid valve is provided at one end of the pressure reducing valve away from the hydrogen bottle pressure sensor, and the end of the hydrogen bottle solenoid valve away from the hydrogen bottle pressure sensor is connected to a hydrogen power supply component.

[0016] In one embodiment, the hydrogen power supply device further comprises:

[0017] A hydrogen inlet solenoid valve is connected to an end of the hydrogen bottle solenoid valve away from the hydrogen bottle pressure sensor, the hydrogen inlet solenoid valve is connected to an end of the hydrogen production one-way valve away from the hydrogen production solenoid valve, a medium-pressure pressure sensor is provided at an end of the hydrogen inlet solenoid valve away from the hydrogen bottle solenoid valve, an ejector assembly is provided at an end of the medium-pressure pressure sensor away from the hydrogen inlet solenoid valve, the ejector assembly is connected to the fuel cell stack through the inlet temperature and pressure sensor, and the fuel cell stack is connected to the outlet temperature and pressure sensor.

[0018] In one embodiment, the product processing unit further includes:

[0019] A steam-water separator, wherein the steam-water separator is connected to the stack outlet temperature and pressure sensor, and the steam-water separator is respectively connected to a drain solenoid valve and an exhaust solenoid valve, and the exhaust solenoid valve and the fuel cell stack are also connected to the ejector assembly.

[0020] In one embodiment, the circulation member further comprises:

[0021] A water recovery pump is connected to the drainage solenoid valve, one end of the water recovery pump away from the drainage solenoid valve is connected to a return water check valve, and one end of the return water check valve away from the drainage solenoid valve is connected to the water tank.

[0022] In one embodiment, the system further comprises:

[0023] The purification component comprises an adsorber filled with a purifier, one end of the adsorber is connected to a hydrogen production one-way valve away from the aluminum water hydrogen production reaction chamber, and the other end of the adsorber is connected to an end of the hydrogen inlet electromagnetic valve away from the medium pressure sensor.

[0024] In a second aspect, the present application provides a hydrogen supply method for an underwater fuel cell hydrogen supply system, the method comprising:

[0025] When the short-range mode is selected, keep the water spray assembly, hydrogen production solenoid valve and water supply pump closed, and open the hydrogen bottle solenoid valve;

[0026] The hydrogen in the hydrogen storage bottle is decompressed by the pressure reducing valve and then enters the fuel cell stack through the ejector assembly;

[0027] The unreacted hydrogen passes through the steam-water separator and then re-enters the fuel cell stack through the ejector assembly;

[0028] When both the high and low liquid level sensors in the steam-water separator have signals, the drainage solenoid valve and the recovery water pump are turned on to send the tail water generated after the reaction into the water tank for storage;

[0029] When there is no signal from both the high and low level sensors, the drainage solenoid valve and water pump are closed;

[0030] When the average single-chip voltage of the fuel cell stack is less than the preset standard single-chip voltage or the minimum single-chip voltage is less than the preset minimum single-chip voltage, the exhaust solenoid valve is opened until the average single-chip voltage of the fuel cell stack is not less than the preset standard single-chip voltage or the minimum single-chip voltage is not less than the preset minimum single-chip voltage.

[0031] In one of the embodiments, when the long-range mode is selected, the water supply pump is turned on, and the pulse width corresponding to the water spray assembly is regulated based on the difference between the water supply pressure and the hydrogen production cabin pressure;

[0032] When the pressure of the aluminum liquid hydrogen production cabin is within the preset target pressure range, the hydrogen bottle solenoid valve is closed;

[0033] When the pressure of the aluminum liquid hydrogen production cabin is greater than the preset target pressure range, the water spray assembly is controlled to stop working, the hydrogen production solenoid valve is kept open and the hydrogen bottle solenoid valve is closed;

[0034] When the pressure of the aluminum liquid hydrogen production cabin is lower than the preset target pressure range, the hydrogen bottle solenoid valve is opened so that the pressure of the aluminum liquid hydrogen production cabin is within the preset target pressure range.

[0035] In one of the embodiments: when the high power mode is selected, when the pressure of the hydrogen production reaction chamber is less than a preset standard threshold and the pressure is on a downward trend, the hydrogen bottle solenoid valve is opened until the pressure of the hydrogen production reaction chamber is within the preset standard threshold range, and then the hydrogen bottle solenoid valve is closed.

[0036] The above-mentioned underwater fuel cell hydrogen supply system includes: a main hydrogen supply part, which is used to provide hydrogen through aluminum water hydrogen production; an auxiliary hydrogen supply part, which is used to provide hydrogen with balanced pressure during the reaction of the main hydrogen supply part; a hydrogen power supply part, which is used to obtain hydrogen reaction to generate electricity for power supply operation; a product processing part, which is used to monitor and process the products produced by the hydrogen power supply part; a circulation part, which is used to recycle the products produced by the hydrogen power supply part. The present application adopts the above-mentioned device to avoid the safety risks brought by the fuel cell UUV carrying large-sized hydrogen storage bottles and oxygen storage bottles at the same time in the harsh and closed environment of the ocean; aluminum-based materials are relatively safe hydrogen storage materials, which are more convenient to load and refill on islands, coasts, ports, etc. far away from hydrogen refueling stations; the product water in the operation of the fuel cell is effectively recycled, avoiding the problem that the fuel cell UUV carrying hydrogen and oxygen bottles must carry a water tank when no water is needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 This is a schematic diagram of the structure of an underwater fuel cell hydrogen supply system in some embodiments of the present application;

[0039] Figure 2 A flow chart of a hydrogen supply method for a short voyage in some embodiments of the present application;

[0040] Figure 3 A flow chart of a method for supplying hydrogen for a long voyage in some embodiments of the present application;

[0041] Figure 4 This is a flow chart of a high-power hydrogen supply method in some embodiments of the present application.

[0042] Description of Figure Numbers:

[0043] 100, main hydrogen supply parts; 110, aluminum water hydrogen production reaction chamber; 120, shower head; 130, water spray assembly; 140, water supply pump; 150, water tank; 160, water supply check valve; 170, water supply pressure sensor; 180, hydrogen production solenoid valve; 190, hydrogen production check valve; 191, hydrogen production chamber outlet temperature and pressure sensor; 200, auxiliary hydrogen supply parts; 210, hydrogen storage bottle; 220, hydrogen bottle pressure sensor; 230, pressure reducing valve; 240, hydrogen bottle solenoid valve; 30 0. Hydrogen power supply components; 310. Hydrogen inlet solenoid valve; 320. Medium pressure sensor; 330. Ejector assembly; 340. Inlet temperature and pressure sensor; 350. Fuel cell stack; 360. Outlet temperature and pressure sensor; 400. Product processing components; 410. Steam-water separator; 420. Liquid level sensor; 430. Drain solenoid valve; 440. Exhaust solenoid valve; 500. Circulation components; 510. Recovery water pump; 520. Return water check valve; 600. Purification components. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0050] The mainstream hydrogen bottle on the market is 70MPa. If the operating seawater temperature of the fuel cell unmanned underwater vehicle (UUV) is 15℃, the density of hydrogen is 40.172kg / m 3A 300L hydrogen bottle carries about 12kg of hydrogen, but due to the inherent characteristics of the hydrogen bottle valve group, its hydrogen cannot be fully released and utilized, and the available amount is about 90%, or about 11kg. Hydrogen production from aluminum water is a mature hydrogen production technology. Its reactants are aluminum-based materials, 2Al+6H2O=2Al(OH)3+3H2↑, 120kg aluminum powder can react to generate 13.33kg hydrogen, consume 240kg water, and can produce 12kg hydrogen at a reaction yield of 90%. At the same time, in the fuel cell, 2H2+O2=2H2O, 12kg of hydrogen can generate 108kg water through the fuel cell. Therefore, by recycling the water of the fuel cell, only 132kg of water needs to be carried. 132kg of water + 120kg of aluminum-based materials, in a volume space of less than 300L, the hydrogen storage density is better than that of a 70MPa hydrogen bottle, and the reaction pressure of the aluminum water hydrogen production reaction chamber is much lower than that of the hydrogen storage bottle. Generally speaking, hydrogen production from aluminum water can be done as needed, and hydrogen can be produced flexibly by controlling the water inlet, and it only needs to meet the medium pressure of the fuel cell (0.5-0.7MPa).

[0051] Reference Figure 1 , Figure 1 An underwater fuel cell hydrogen supply system provided by an embodiment of the present application is shown, including a main hydrogen supply component, which is used to provide hydrogen through aluminum water hydrogen production; an auxiliary hydrogen supply component, which is used to provide hydrogen with balanced pressure during the reaction process of the main hydrogen supply component; a hydrogen power supply component, which is used to obtain electrical energy generated by hydrogen reaction for power supply operation; a product processing component, which is used to monitor and process the products produced by the hydrogen power supply component; and a circulation component, which is used to recover and circulate the products produced by the hydrogen power supply component.

[0052] This application can avoid the safety risks brought by fuel cell UUVs carrying large-sized hydrogen storage bottles and oxygen storage bottles at the same time in the harsh and confined environment of the ocean; aluminum-based materials, as relatively safe hydrogen storage materials, are more convenient for loading and refueling on islands, coasts, ports, etc. far away from hydrogen refueling stations; the product water during the operation of the fuel cell is effectively recycled, avoiding the problem of carrying a water tank for fuel cell UUVs carrying hydrogen and oxygen bottles when no water is needed.

[0053] Reference Figure 1In some embodiments, the main hydrogen supply component includes an aluminum liquid hydrogen production reaction chamber, which is filled with aluminum powder. A shower head is connected to the aluminum liquid hydrogen production reaction chamber, and the shower head is connected to a water spray assembly through a water spray pipe. The water spray assembly is respectively connected to a water supply pump and a water tank through a water supply pipeline. A water supply check valve for controlling the on-off of the water supply pipeline is also connected between the water spray assembly and the water supply pump. A water supply pressure sensor for detecting the water supply pressure is also provided between the water spray assembly and the water supply check valve; the aluminum liquid hydrogen production reaction chamber is also connected to a hydrogen production solenoid valve, and one end of the hydrogen production solenoid valve away from the aluminum liquid hydrogen production reaction chamber is connected to the hydrogen production check valve, and a hydrogen production chamber outlet temperature and pressure sensor for detecting the hydrogen production chamber outlet temperature and pressure is provided between the aluminum liquid hydrogen production reaction chamber and the hydrogen production solenoid valve, and one end of the hydrogen production check valve away from the hydrogen production solenoid valve is connected to the hydrogen power supply component.

[0054] Reference Figure 1 In some embodiments, the auxiliary hydrogen supply component includes: a hydrogen storage bottle, a hydrogen bottle pressure sensor for detecting the outlet pressure of the hydrogen storage bottle is connected to the outlet of the hydrogen storage bottle, a pressure reducing valve is connected to the other end of the hydrogen bottle pressure sensor, a hydrogen bottle solenoid valve for controlling the hydrogen bottle switch is provided at one end of the pressure reducing valve away from the hydrogen bottle pressure sensor, and one end of the hydrogen bottle solenoid valve away from the hydrogen bottle pressure sensor is connected to the hydrogen power supply component.

[0055] Reference Figure 1 In this embodiment, the hydrogen power supply component also includes: a hydrogen inlet solenoid valve, the hydrogen inlet solenoid valve is connected to one end of the hydrogen bottle solenoid valve away from the hydrogen bottle pressure sensor, the hydrogen inlet solenoid valve is connected to one end of the hydrogen production one-way valve away from the hydrogen production solenoid valve, the end of the hydrogen inlet solenoid valve away from the hydrogen bottle solenoid valve is provided with a medium-pressure pressure sensor for detecting the pressure of hydrogen after passing through the pressure reducing valve, the end of the medium-pressure pressure sensor away from the hydrogen inlet solenoid valve is connected to the ejector assembly, the ejector assembly is connected to an inlet temperature and pressure sensor for detecting the temperature and pressure of hydrogen when entering the stack, the ejector assembly transports hydrogen to the fuel cell stack, and the outlet of the fuel cell stack is connected to an outlet temperature and pressure sensor for detecting the temperature and pressure of hydrogen out of the stack.

[0056] Reference Figure 1 In this embodiment, the product processing component also includes: a steam-water separator, a high liquid level sensor and a low liquid level sensor are arranged inside the steam-water separator, the steam-water separator is connected to the outlet of the fuel cell stack through the outlet temperature and pressure sensor, the steam-water separator is respectively connected to the drain solenoid valve and the exhaust solenoid valve, the exhaust solenoid valve and the fuel cell stack are also connected back to the ejector assembly, and the steam-water separator controls the on and off of the drain solenoid valve through the liquid level signals sent by the high and low liquid level sensors.

[0057] Reference Figure 1In this embodiment, the circulation part also includes: a recovery water pump, the recovery water pump is connected to the drain solenoid valve, the end of the recovery water pump away from the drain solenoid valve is connected to a return water check valve, and the end of the return water check valve away from the drain solenoid valve is connected to the water tank.

[0058] Reference Figure 1 In this embodiment, the system also includes a purification component, which includes an adsorber filled with 13X molecular sieve and activated carbon. One end of the adsorber is connected to the hydrogen production one-way valve away from the aluminum water hydrogen production reaction chamber, and the other end of the adsorber is connected to the end of the hydrogen inlet solenoid valve away from the medium pressure sensor.

[0059] In this embodiment, the hydrogen storage bottle is very small, and the main hydrogen source is provided by aluminum water hydrogen production, so as to avoid the danger of gas leakage caused by carrying large-sized hydrogen storage bottles and oxygen storage bottles at the same time. At the same time, the hydrogen storage density of aluminum water hydrogen production is higher than that of 70MPa hydrogen storage bottles under the same volume; the aluminum water hydrogen production reaction chamber is easy to load reaction materials and take out reaction products, and it is easier to refill and replace than hydrogen storage tanks in islands, coasts, ports and other places far away from hydrogen refueling stations; the water produced by the fuel cell stack is recycled to solve the storage problem of long-term accumulation of tail water.

[0060] A method for supplying hydrogen to an underwater fuel cell hydrogen supply system, such as Figure 2 As shown in the figure, when the UUV is in short-range operation or near-shore commissioning, it can choose to use only hydrogen storage bottles as the hydrogen source. The specific hydrogen supply methods include:

[0061] When the short-range mode is selected, keep the water spray assembly, hydrogen production solenoid valve and water supply pump closed, and open the hydrogen bottle solenoid valve; the hydrogen in the hydrogen storage bottle is reduced in pressure by the pressure reducing valve and then enters the fuel cell stack through the ejector assembly; the unreacted hydrogen passes through the steam-water separator and then re-enters the fuel cell stack through the ejector assembly; when the high and low liquid level sensors in the steam-water separator have signals, the drain solenoid valve and the recovery water pump are turned on to send the tail water generated after the reaction into the water tank for storage; when the high and low liquid level sensors have no signals, the drain solenoid valve and the water pump are closed; when the average single-chip voltage of the fuel cell stack is less than the preset standard single-chip voltage or the minimum single-chip voltage is less than the preset minimum single-chip voltage, open the exhaust solenoid valve until the average single-chip voltage of the fuel cell stack is not less than the preset standard single-chip voltage or the minimum single-chip voltage is not less than the preset minimum single-chip voltage.

[0062] Specifically, Figure 2As shown, the water spray assembly, hydrogen production solenoid valve and water supply pump are closed, the hydrogen bottle solenoid valve is opened, the hydrogen in the hydrogen storage bottle is reduced to a normal medium pressure of 0.5-0.7MPa by the pressure reducing valve and then enters the hydrogen supply main line, and then enters the fuel cell stack after being adjusted to a stable target stack pressure by the ejector assembly, and the unreacted hydrogen passes through the steam-water separator and enters the ejector assembly through the circulation pipeline to re-enter the stack, when the high and low liquid level sensors in the steam-water separator have signals, the drain solenoid valve and the recovery water pump are turned on, and the tail water enters the water tank for storage, and when the high and low liquid level sensors have no signals, the drain solenoid valve and the return water pump are turned off; when the average single-chip voltage V ave Or the minimum single chip voltage V low Respectively less than or equal to the minimum threshold V avemin and V lowmin , the exhaust solenoid valve opens to the average single-chip voltage of the fuel cell stack V ave Or the minimum single chip voltage V low After returning to the normal threshold, it is closed and the tail gas enters the hydrogen removal device for treatment.

[0063] In one embodiment, Figure 3 As shown, when the long-range mode is selected, the water supply pump is turned on, and the pulse width corresponding to the water spray assembly is regulated based on the difference between the water supply pressure and the pressure of the hydrogen production cabin; when the pressure of the aluminum liquid hydrogen production cabin is within the preset target pressure range, the hydrogen bottle solenoid valve is closed; when the pressure of the aluminum liquid hydrogen production cabin is greater than the preset target pressure range, the water spray assembly is controlled to stop working, the hydrogen production solenoid valve is kept open and the hydrogen bottle solenoid valve is closed; when the pressure of the aluminum liquid hydrogen production cabin is less than the preset target pressure range, the hydrogen bottle solenoid valve is opened so that the pressure of the aluminum liquid hydrogen production cabin is within the preset target pressure range.

[0064] Specifically, Figure 3 As shown in FIG. 1 , when the UUV needs to operate for a long voyage, it turns on aluminum water to produce hydrogen as a hydrogen source. After the aluminum-based materials are filled, the aluminum water hydrogen production reaction cabin has been replaced with hydrogen to ensure that the reaction cabin is filled with pure hydrogen. The working process is as follows: the water supply pump is turned on as a water supply source, and the required water intake for aluminum water hydrogen production is obtained based on the target hydrogen production pressure. The pulse width of the water spray assembly is adjusted according to the difference between the water supply pressure and the hydrogen production cabin pressure, so that the aluminum water hydrogen production cabin pressure is maintained between the upper and lower thresholds of the target pressure (P min ≤Hydrogen production chamber outlet pressure≤P max ), at this time, the hydrogen production battery valve is opened, the hydrogen bottle solenoid valve is closed, and hydrogen supply is not required; if the hydrogen production cabin pressure is greater than the target pressure upper limit threshold P max , the water spray assembly stops working and no water reaction occurs. The hydrogen production solenoid valve continues to open to maintain the supply of hydrogen flow to the fuel cell, and the hydrogen bottle solenoid valve is closed. If the hydrogen production cabin pressure is less than the target pressure lower limit threshold P min, the water spray assembly works normally, the hydrogen production solenoid valve remains open, and the hydrogen bottle solenoid valve opens to supply hydrogen to maintain the medium pressure within the target pressure upper and lower thresholds. When the hydrogen production cabin pressure is greater than the target pressure lower limit threshold P again min , the hydrogen bottle solenoid valve is closed. The processing method of unreacted gas and tail water during fuel cell power generation is consistent with the logic of UUV short-range operation or near-shore commissioning.

[0065] In one embodiment, Figure 4 As shown, when the high power mode is selected, when the pressure of the hydrogen production reaction chamber is less than the preset standard threshold and the pressure shows a downward trend, the hydrogen bottle solenoid valve is opened until the pressure of the hydrogen production reaction chamber is within the preset standard threshold range, and then the hydrogen bottle solenoid valve is closed.

[0066] Specifically, Figure 4 As shown in the figure, the UUV has a short period of high-power operation. When the system receives a signal for high-power operation, the hydrogen demand flow of the fuel cell anode increases, and the water intake of aluminum water hydrogen production increases. However, due to the hysteresis of the chemical reaction, the hydrogen production of aluminum water hydrogen production cannot quickly make up for the decrease in hydrogen production cabin pressure caused by the increase in output flow. If the outlet pressure of the hydrogen production reaction cabin continues to decrease and is lower than the threshold value P1 (P1>P min ), the hydrogen bottle solenoid valve needs to be opened to supplement a part of the hydrogen volume, otherwise the pressure in the hydrogen production reaction chamber will continue to drop, the water inflow multiple will increase, and when the pressure rises, the water inflow will be excessive, which is easy to cause overpressure; after opening the hydrogen bottle solenoid valve, the large fluctuation of the hydrogen production reaction chamber pressure is reduced under the premise of ensuring the supply of the hydrogen demand flow of the fuel cell stack, and the pressure of the aluminum water hydrogen production rises to the stable output pressure threshold range under the high power operation state (P1≤hydrogen production chamber outlet pressure≤P max ), the solenoid valve of the hydrogen bottle is closed; when the high-power operation state ends, the high-power operation signal disappears, and the hydrogen supply is restored to the UUV long-range operation demand mode. The processing of unreacted gas and tail water during the fuel cell power generation process is consistent with the logic of UUV short-range operation or near-shore debugging.

[0067] It should be understood that, although each step in the flow chart involved in each example as described above is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be performed in other orders. Moreover, at least a part of the steps in the flow chart involved in each embodiment as described above can include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a part of the steps or stages in other steps or other steps.

[0068] Based on the same inventive concept, the embodiment of the present application also provides an underwater fuel cell hydrogen supply system detection device. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of an underwater fuel cell hydrogen supply system detection device provided below can refer to the above limitations on improving an underwater fuel cell hydrogen supply system detection method, and will not be repeated here.

[0069] In one embodiment, a computer device is provided, which may be a server, and includes a processor, a memory, and a network interface connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a high-power superconducting charging connection method for electric vehicles is implemented.

[0070] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0071] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An underwater fuel cell hydrogen supply system, characterized in that: The system comprises: A main hydrogen supply component, which is used to provide hydrogen through the production of hydrogen from molten aluminum; An auxiliary hydrogen supply component, which is used to provide hydrogen with a balanced pressure during the reaction process of the main hydrogen supply component; A hydrogen power supply component, the hydrogen power supply component is used to obtain hydrogen reaction to generate electrical energy for power supply operation; A product processing component, the product processing component is used to monitor and process the product generated by the hydrogen power supply component; The circulation component is used to recover and circulate the product generated by the hydrogen power supply component.

2. The underwater fuel cell hydrogen supply system according to claim 1, characterized in that: The main hydrogen supply component comprises: Aluminum molten hydrogen production reaction chamber, wherein the aluminum molten hydrogen production reaction chamber is filled with aluminum powder, and the aluminum molten hydrogen production reaction chamber is connected to a shower head, wherein the shower head is provided with a water spray assembly, wherein the water spray assembly is connected to a water tank through a water supply pump, and a water supply one-way valve is further provided between the water spray assembly and the water supply pump, and a water supply pressure sensor is further provided between the water spray assembly and the water supply one-way valve; The aluminum liquid hydrogen production reaction chamber is also connected to a hydrogen production solenoid valve, and a hydrogen production one-way valve is provided at one end of the hydrogen production solenoid valve away from the aluminum liquid hydrogen production reaction chamber. A hydrogen production chamber outlet temperature and pressure sensor is provided between the aluminum liquid hydrogen production reaction chamber and the hydrogen production solenoid valve, and one end of the hydrogen production one-way valve away from the hydrogen production solenoid valve is connected to a hydrogen power supply component.

3. The underwater fuel cell hydrogen supply system according to claim 2, characterized in that: The auxiliary hydrogen supply component comprises: A hydrogen storage bottle, wherein the hydrogen storage bottle is connected to a pressure reducing valve via a hydrogen bottle pressure sensor, a hydrogen bottle solenoid valve is provided at one end of the pressure reducing valve away from the hydrogen bottle pressure sensor, and the end of the hydrogen bottle solenoid valve away from the hydrogen bottle pressure sensor is connected to a hydrogen power supply component.

4. The underwater fuel cell hydrogen supply system according to claim 3, characterized in that: The hydrogen power supply component also includes: A hydrogen inlet solenoid valve is connected to an end of the hydrogen bottle solenoid valve away from the hydrogen bottle pressure sensor, the hydrogen inlet solenoid valve is connected to an end of the hydrogen production one-way valve away from the hydrogen production solenoid valve, a medium-pressure pressure sensor is provided at an end of the hydrogen inlet solenoid valve away from the hydrogen bottle solenoid valve, an ejector assembly is provided at an end of the medium-pressure pressure sensor away from the hydrogen inlet solenoid valve, the ejector assembly is connected to the fuel cell stack through the inlet temperature and pressure sensor, and the fuel cell stack is connected to the outlet temperature and pressure sensor.

5. The underwater fuel cell hydrogen supply system according to claim 4, characterized in that: The product processing unit also includes: A steam-water separator, wherein the steam-water separator is connected to the stack outlet temperature and pressure sensor, and the steam-water separator is respectively connected to a drain solenoid valve and an exhaust solenoid valve, and the exhaust solenoid valve and the fuel cell stack are also connected to the ejector assembly.

6. The underwater fuel cell hydrogen supply system according to claim 5, characterized in that: The circulating member also includes: A water recovery pump is connected to the drainage solenoid valve, one end of the water recovery pump away from the drainage solenoid valve is connected to a return water check valve, and one end of the return water check valve away from the drainage solenoid valve is connected to the water tank.

7. The underwater fuel cell hydrogen supply system according to claim 6, characterized in that: The system further comprises: The purification component comprises an adsorber filled with a purifier, one end of the adsorber is connected to a hydrogen production one-way valve away from the aluminum water hydrogen production reaction chamber, and the other end of the adsorber is connected to an end of the hydrogen inlet electromagnetic valve away from the medium pressure sensor.

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