Solid hydrogen storage fuel cell tail gas dehumidification system and method

Abstract

The invention relates to the technical field of solid-state hydrogen storage fuel cells, in particular to a solid-state hydrogen storage fuel cell tail gas dehumidification system and method. The dehumidification system comprises a fuel cell exhaust port, a condensation assembly and a dehumidification assembly. And the condensation assembly is connected with a fuel cell exhaust port and is used for condensing high-temperature and high-humidity tail gas. The dehumidification assembly comprises a tail gas channel and a condensation channel, and the condensation channel is arranged on the outer wall of the tail gas channel for heat exchange. Environment cold dry air is introduced into the condensation channel through an air blower, and warm dry air exhausted from the air outlet end is connected with the fuel cell heating module. The dehumidification assembly is vertically installed above the tail gas outlet, and the water collecting tank is connected below. The system and the method are combined to achieve the dual functions of efficient dehumidification and waste heat recovery, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of solid-state hydrogen storage fuel cell technology, and specifically to a solid-state hydrogen storage fuel cell exhaust gas dehumidification system and method. Background Technology

[0002] With the rapid development of hydrogen energy technology, solid-state hydrogen fuel cells have shown broad application prospects in industrial applications such as forklifts and logistics handling due to their advantages such as high hydrogen storage density, good safety, and regular shape. Compared with traditional high-pressure gaseous hydrogen storage, solid-state hydrogen storage devices are more stable in quality and easier to load, making them particularly suitable for forklift equipment with strict requirements on space layout and weight distribution.

[0003] However, fuel cells generate a large amount of water vapor and waste heat during the electrochemical reaction process. These byproducts are discharged with the exhaust gas, causing varying degrees of impact in different operating environments. Especially in special application scenarios such as data centers, warehouses, cold storage facilities, and remote construction sites, the direct emission of exhaust gas is becoming increasingly prominent, becoming a significant factor restricting the widespread application of solid-state hydrogen storage fuel cell forklifts.

[0004] Currently, the industry mainly uses simple condensation or separation devices to treat fuel cell exhaust gases. These devices either condense water vapor into liquid water by cooling, or use mechanical separation to separate the gas and liquid phases. These conventional solutions often focus on dehumidification alone, neglecting the recovery and utilization of waste heat from the exhaust gases. Furthermore, they are insufficient in terms of dehumidification depth, energy consumption control, and adaptability. In relatively enclosed indoor environments, existing dehumidification devices struggle to reduce exhaust gas humidity to sufficiently low levels, leading to continuous humidity accumulation in the workspace and posing a potential threat to precision equipment and stored materials. Summary of the Invention

[0005] The technical objective of this invention is to provide a dehumidification system and method for solid-state hydrogen storage fuel cell exhaust gas, in order to solve the technical problems of low dehumidification efficiency and insufficient waste heat recovery.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution: The present invention provides a solid hydrogen storage fuel cell exhaust gas dehumidification system, comprising a fuel cell exhaust port, a condensation component, and a dehumidification component. The fuel cell exhaust port is used to discharge the exhaust gas of the fuel cell; the exhaust gas inlet of the condensation component is connected to the fuel cell exhaust port and is used to condense and treat the exhaust gas of the fuel cell; the dehumidification component is installed at the exhaust gas outlet of the condensation component and is used to separate the condensed exhaust gas. Furthermore, the condensation assembly includes an exhaust gas passage and a condensation passage. The exhaust gas passage connects the fuel cell exhaust port and the dehumidification assembly. There are two condensation passages, both of which are located on the outer wall of the exhaust gas passage, for two heat exchanges with the exhaust gas in the exhaust gas passage. Preferably, the exhaust gas passage includes an exhaust gas inlet for intake and an exhaust gas outlet for exhaust. Preferably, the condensation channel includes an air inlet and an air outlet. The air inlet is supplied with cool, dry ambient air through a blower, and the air outlet is used to discharge warm, dry air and is connected to the heating module of the fuel cell. Preferably, the dehumidification component is vertically installed on the exhaust gas outlet, and a water collection tank is connected below it.

[0007] Furthermore, the dehumidification assembly includes a mounting housing, dehumidification baffles, a mounting head, and an exhaust port. The mounting housing is tubular and vertically mounted on the exhaust outlet. The dehumidification baffles are staggered and their front ends are inclined downwards and mounted on the inner wall of the mounting housing. The mounting head is mounted on the top of the mounting housing, and the top of the mounting head is closed. The exhaust port is opened on the side wall of the mounting head.

[0008] Preferably, a water collection groove is provided at the top of the mounting housing and at the connection with the mounting housing head, and the depth of the water collection groove covers the vent hole.

[0009] More preferably, the mounting housing is made of a thermally conductive material, and heat dissipation fins are mounted in a circumferential array on its outer wall.

[0010] Preferably, both condensation channels are distributed on the exhaust gas channel. The two condensation channels are a slow-temperature channel and a humidity control channel, respectively. The slow-temperature channel stabilizes the exhaust gas temperature in the exhaust gas channel, and the humidity control channel is used to reduce the humidity of the exhaust gas to RH≤40% through condensation. The slow-temperature channel is installed on the side near the exhaust gas inlet, and the humidity control channel is installed on the side near the exhaust gas outlet.

[0011] More preferably, the condensation channel is composed of spiral condenser tubes and installed on the outer wall of the exhaust gas channel, and the distribution length of the slow temperature channel on the exhaust gas channel is greater than the distribution length of the humidity control channel on the exhaust gas channel.

[0012] Furthermore, the air intake end is connected to the blower via a three-way valve. Both the three-way valve and the blower are electrically connected to an intelligent controller. The intelligent controller is used to adjust the speed of the blower and the opening degree of the three-way valve according to the temperature and humidity of the exhaust gas in the exhaust gas passage.

[0013] The present invention also provides a dehumidification method based on the above-mentioned solid-state hydrogen storage fuel cell exhaust gas dehumidification system, comprising the following steps: The exhaust gas emitted by the fuel cell is passed into the dehumidification component through the exhaust gas inlet; Ambient cold and dry air is introduced through the condensation channel set on the outer wall of the exhaust gas channel, so that the condensation channel and the exhaust gas in the exhaust gas channel can exchange heat. The exhaust gas passes through the slow temperature channel and the humidity control channel in sequence. The slow-temperature channel lowers the temperature of the exhaust gas to 35℃-45℃, resulting in constant-temperature exhaust gas; the humidity control channel condenses the constant-temperature exhaust gas, reducing the humidity of the condensed exhaust gas to RH≤40%. Among them, the intelligent controller collects the temperature and humidity signals of the exhaust gas in the exhaust gas passage in real time, and controls the valve flow of the three-way valve so that the cold dry air introduced by the blower enters the slow temperature passage and the humidity control passage at different flow rates. The condensate generated by the constant-temperature exhaust gas is separated by a vertically arranged dehumidification component and flows into a water collection tank by gravity. The separated exhaust gas is discharged through the exhaust port at the top of the dehumidification component. Meanwhile, the warm and dry air discharged from the outlet of the condensation channel is discharged through another three-way valve, with part of the warm and dry air being introduced into the heating module of the fuel cell and part of the warm and dry air being discharged to the outside.

[0014] The beneficial effects of this invention are as follows: 1. This invention achieves staged condensation and efficient dehumidification of high-temperature and high-humidity exhaust gas by incorporating a condensation component and a dehumidification component at the fuel cell exhaust outlet. The high-temperature and high-humidity exhaust gas undergoes staged heat exchange by sequentially passing through a slow-temperature channel and a humidity-controlled channel. The exhaust gas temperature first decreases steadily and then rapidly drops to the exhaust gas condensation temperature, thereby promoting the full condensation and separation of water vapor in the exhaust gas. While achieving exhaust gas dehumidification, this invention also utilizes the warm, dry air discharged from the condensation channel to provide a heat recovery path for the fuel cell heating module, forming a closed-loop system of "dehumidification-condensation-waste heat utilization." This not only improves the dryness of the exhaust gas and prevents corrosion or performance degradation of system components due to exhaust gas moisture and heat, but also effectively enhances the overall energy efficiency and thermal management stability of the fuel cell system.

[0015] 2. This invention achieves rapid separation of high-humidity exhaust gas and condensate by incorporating staggered, inclined dehumidification baffles, a water collection tank, and a vertical flow guiding structure within the dehumidification component. This allows condensate to flow smoothly along the baffles to the water collection tank under gravity, thus enabling rapid separation of the condensate from the exhaust gas. During operation, this increases the contact area between the condensate and the exhaust gas and extends the gas-liquid separation path, thereby reducing the probability of water vapor entrainment in the exhaust gas and improving its dryness. It significantly reduces droplet retention and re-evaporation, enhancing the operational reliability and long-term stability of the dehumidification component.

[0016] 3. This invention also achieves automated control of the flow rate of cold dry air in the condensation channel and the channel switching by setting up an intelligent controller electrically connected to the blower and the three-way valve. During operation, the system adaptively adjusts the flow rate distribution of cold dry air in the slow-temperature channel and the humidity control channel based on the real-time collected exhaust gas temperature and humidity signals to maintain a dynamic balance between dehumidification efficiency and energy consumption. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of a cold start system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a condensation assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the external structure of the dehumidification component according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the dehumidification component according to an embodiment of the present invention.

[0019] In the diagram: 1. Fuel cell exhaust port; 2. Condensation assembly; 21. Exhaust gas passage; 211. Exhaust gas inlet; 212. Exhaust gas outlet; 22. Condensation passage; 221. Inlet end; 222. Outlet end; 23. Temperature control passage; 24. Humidity control passage; 3. Dehumidification assembly; 31. Mounting housing; 32. Mounting housing head; 33. Dehumidification baffle; 34. Exhaust port; 35. Water collection tank; 36. Heat dissipation fins; 4. Water collection tank; 5. Three-way valve; 6. Blower; 7. Intelligent controller. Detailed Implementation

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] Example 1: This embodiment provides a solid-state hydrogen storage fuel cell exhaust gas dehumidification system, such as... Figure 1As shown, the system includes a fuel cell exhaust port 1, a condenser assembly 2, and a dehumidifier assembly 3. The fuel cell exhaust port 1 is used to discharge the high-temperature, high-humidity exhaust gas from the fuel cell. The exhaust gas inlet 211 of the condenser assembly 2 is connected to the fuel cell exhaust port 1 and is used to condense and treat the high-temperature, high-humidity exhaust gas. The dehumidifier assembly 3 is installed at the exhaust gas outlet 212 of the condenser assembly 2 and is used to separate the condensed low-temperature, low-humidity exhaust gas.

[0022] like Figure 2 As shown, the condensation assembly 2 includes an exhaust gas passage 21 and a condensation passage 22. The exhaust gas passage 21 connects the fuel cell exhaust port 1 and the dehumidification assembly 3, and includes an exhaust gas inlet 211 for intake and an exhaust gas outlet 212 for exhaust. The condensation passage 22 is disposed on the outer wall of the exhaust gas passage 21 and is used for heat exchange with the high-temperature and high-humidity exhaust gas inside the exhaust gas passage 21.

[0023] In this embodiment, by spirally surrounding and fitting the condensation channel 22 onto the outer wall of the exhaust gas channel 21, the heat exchange contact area can be maximized, the heat exchange efficiency can be improved, and the high-temperature and high-humidity exhaust gas can be rapidly cooled down to a temperature close to the warehouse room temperature, thereby causing water vapor to condense into liquid water and achieving effective dehumidification of the exhaust gas.

[0024] The condensation channel 22 includes an inlet end 221 and an outlet end 222. The inlet end 221 introduces cool, dry ambient air through a blower, utilizing this air as a cooling medium. This eliminates the need for additional refrigeration equipment, reducing system energy consumption and complexity. The outlet end 222 discharges warm, dry air and connects to the fuel cell's heating module, enabling cascaded energy utilization. Waste heat from the exhaust gas is recovered for insulation and heating of the fuel cell system, improving overall energy efficiency.

[0025] like Figure 1 and Figure 3 As shown, the dehumidification component 3 is vertically installed on the exhaust outlet 212, with a water collection tank 4 connected below it. The vertical installation allows the condensed liquid water to fall naturally under gravity, preventing water droplets from accumulating in the pipes and causing blockages, or being carried away by the airflow and affecting the dehumidification effect. The water collection tank 4 is used to collect condensate water for convenient and unified discharge and management.

[0026] The dehumidification system in this embodiment utilizes the heat exchange between the ambient cold air and the high-temperature, high-humidity exhaust gas. While condensing and dehumidifying, it also recovers waste heat for heating, thus achieving effective dehumidification of the exhaust gas and improving energy utilization.

[0027] Example 2: A solid-state hydrogen storage fuel cell exhaust gas dehumidification system, based on Embodiment 1, further optimizes the dehumidification component 3 in this embodiment. For example... Figure 3 and Figure 4As shown, the dehumidification assembly 3 includes a mounting housing 31, dehumidification baffles 33, a mounting head 32, and an exhaust port 34. The mounting housing 31 is tubular and vertically mounted on the exhaust outlet 212, and the tubular structure ensures smooth exhaust gas flow. The dehumidification baffles 33 are staggered and inclined downwards at the front end on the inner wall of the mounting housing 31. The staggered arrangement of the dehumidification baffles 33 increases the gas-liquid contact area, causing the exhaust gas to change its flow direction multiple times during its ascent, prolonging the residence time of the gas in the dehumidification assembly 3, and improving the droplet collection efficiency. The downward-inclined design at the front end allows water droplets colliding with the baffles to flow downwards along the inclined surface and collect, preventing water droplets from being re-entrained by the airflow.

[0028] Mounting head 32 is installed on top of mounting housing 31. The top of mounting head 32 is closed, and exhaust port 34 is opened on the side wall of mounting head 32. The closed top forces the exhaust gas to be discharged laterally from the exhaust port 34 on the side wall, changing the airflow direction. Utilizing the principle of inertial separation, the fine liquid droplets remaining in the exhaust gas are separated from the airflow due to inertia when the gas changes direction, further improving the gas-liquid separation effect. Side wall exhaust also prevents the possibility of droplets being discharged directly upwards with the airflow.

[0029] A water collection trough 35 is provided at the top of the mounting housing 31 and at the connection with the mounting head 32, the depth of which covers the exhaust port 34. The water collection trough 35 can collect water droplets flowing down the inner wall of the mounting housing 31 and condensing on the outer wall of the mounting head 32. At the same time, the low-temperature and low-humidity exhaust gas is discharged from the exhaust port 34 and comes into contact with the ambient air, causing partial humidity control, and condenses on the outer wall of the mounting head 32. At this time, the water droplets adhering to the outer wall of the mounting head 32 can flow into the water collection trough 35, thus achieving secondary water collection. Since the depth of the water collection trough 35 covers the position of the exhaust port 34, when the water in the water collection trough 35 is full, it will flow from the exhaust port 34 into the interior of the mounting housing 31 and into the water collection tank 4, thereby ensuring the dryness of the exhaust gas and the all-round collection of condensate.

[0030] In this preferred embodiment, the mounting housing 31 is made of a thermally conductive material, specifically aluminum alloy, preferably 6063 aluminum alloy, which has better thermal conductivity and facilitates heat dissipation to reduce its own temperature. Furthermore, the outer wall of the mounting housing 31 is equipped with a circumferential array of heat dissipation fins 36. The thermally conductive material can quickly conduct the heat of the exhaust gas inside the housing to the outer wall. The heat dissipation fins 36 significantly increase the heat exchange area with the ambient air, accelerating the cooling process of the exhaust gas and promoting water vapor condensation. The circumferentially distributed heat dissipation fins 36 ensure uniform heat dissipation and prevent localized overheating.

[0031] Example 3: This embodiment provides a solid-state hydrogen storage fuel cell exhaust gas dehumidification system. Based on Embodiment 1 or 2, the configuration and control method of the condensation channel 22 are optimized. Two condensation channels 22 are distributed on the exhaust gas channel 21, namely a temperature-regulating channel 23 and a humidity-controlled channel 24. The temperature-regulating channel 23 stabilizes the temperature of the high-temperature, high-humidity exhaust gas, avoiding localized overcooling caused by sudden temperature drops, and pre-cools the exhaust gas to prepare for subsequent deep condensation. The humidity-controlled channel 24 is used to reduce the temperature of the high-temperature, high-humidity exhaust gas to an emission temperature, specifically room temperature +10°C, to achieve a large amount of water vapor condensation in the high-temperature, high-humidity exhaust gas. The temperature-regulating channel 23 is installed on the side near the exhaust gas inlet 211, and the humidity-controlled channel 24 is installed on the side near the exhaust gas outlet 212, forming a segmented cooling gradient temperature control mode, which improves condensation efficiency and system stability.

[0032] The condensation channel 22 consists of spiral condenser tubes and is installed on the outer wall of the exhaust gas channel 21. The spiral structure increases the length of the condenser tubes within a limited space, expands the heat exchange area, and enhances the heat transfer effect. Its close proximity to the outer wall of the exhaust gas channel 21 ensures good thermal contact. The distribution length of the slow-temperature channel 23 on the exhaust gas channel 21 is greater than that of the humidity control channel 24. This is because the slow-temperature stage requires handling more heat and a gradual cooling process, while the humidity control stage requires concentrated and intensified cooling to rapidly reduce the temperature to near room temperature, ensuring that the relative humidity (RH) of the discharged low-temperature, low-humidity exhaust gas is ≤40%.

[0033] The air inlet 221 is connected to the blower 6 via a three-way valve 5. Both the three-way valve 5 and the blower 6 are electrically connected to an intelligent controller 7. The intelligent controller 7 is used to adjust the speed of the blower 6 and the opening of the three-way valve 5 according to the temperature and humidity of the high-temperature and high-humidity exhaust gas. In addition, the air outlet 222 of the condenser assembly 2 is connected to the heating module and the outside through a three-way valve 5. After the cold dry air enters the condenser assembly 2 from the blower 6 and exchanges heat with the exhaust gas passage 21, the cold dry air absorbs heat and becomes warm dry air, which is discharged from the air outlet 222. The two air outlets 222 are connected in parallel through pipes to the air inlet valve of the three-way valve 5. The other two air outlet valves of the three-way valve 5 are connected to the heating module of the fuel cell system and the outside, respectively. By supplying a portion of the warm dry air to the fuel cell to provide heat for cold start, and the other portion of the warm dry air can be directly discharged to the outside, air circulation is achieved while making full use of the heat of the exhaust gas.

[0034] The intelligent controller 7 collects real-time temperature and humidity data within the exhaust gas passage 21. When the exhaust gas temperature exceeds 60℃ or the humidity exceeds 80%RH, the intelligent controller 7 increases the power of the blower 6 and adjusts the three-way valve 5 at the intake end 221 to distribute more cold air into the corresponding passage. When the exhaust gas temperature stabilizes between 35℃ and 45℃ and the humidity drops below 40%RH, the controller can reduce the speed of the blower 6 or close some passages to save energy. The intelligent controller 7 can flexibly allocate the flow ratio of cold air between the temperature-regulating passage 23 and the humidity-controlling passage 24, achieving precise segmented temperature control.

[0035] Example 4: This embodiment provides a dehumidification method based on the above system. It includes the following steps: The high-temperature and high-humidity exhaust gas emitted from the fuel cell is introduced into the dehumidification component 3 through the exhaust gas inlet 211.

[0036] Cool, dry ambient air is introduced through the condensation channel 22 located on the outer wall of the exhaust gas channel 21, allowing the condensation channel 22 to exchange heat with the high-temperature, high-humidity exhaust gas inside the exhaust gas channel 21. The high-temperature, high-humidity exhaust gas then passes through the slow-temperature channel 23 and the humidity control channel 24 in sequence.

[0037] The slow-temperature channel 23 reduces the temperature of the high-temperature, high-humidity exhaust gas to 35℃-45℃, resulting in a constant-temperature exhaust gas. This temperature range avoids the impact of excessively high temperatures on subsequent humidity control while also preventing uneven temperature distribution that might occur due to rapid temperature drops, thus creating optimal conditions for humidity control. The humidity control channel 24 condenses the constant-temperature exhaust gas, reducing the humidity of the condensed, low-temperature, low-humidity exhaust gas to RH≤40%, meeting the humidity requirements of the fuel cell system for exhaust gas emissions.

[0038] The intelligent controller 7 collects the temperature and humidity signals of the high-temperature and high-humidity exhaust gas in the exhaust gas passage 21 in real time. By controlling the valve flow of the three-way valve 5 at the air inlet 221, the cold and dry air introduced by the blower 6 enters the slow temperature passage 23 and the humidity control passage 24 at different flow rates.

[0039] The condensate generated from the constant-temperature exhaust gas is separated by the vertically arranged dehumidification component 3 and flows into the water collection tank 4 by gravity. The low-temperature, low-humidity exhaust gas is discharged through the exhaust port 34 at the top of the dehumidification component 3. At the same time, the warm and dry air discharged from the outlet 222 of the condensation channel 22 is partially introduced into the heating module of the fuel cell through the three-way valve 5, and partially discharged, which satisfies the heating demand while avoiding excessive heat accumulation.

[0040] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

[0041] Although one or more exemplary embodiments of this disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims.

[0042] The foregoing description is merely illustrative of this disclosure, and modifications may be made to the invention in light of the above detailed description. The terminology used in the appended claims should not be construed as limiting the invention to the specific embodiments disclosed in the specification. Rather, the scope of the invention will be fully defined by the appended claims, which will be interpreted according to established principles of claim interpretation.

Claims

1. A solid-state hydrogen storage fuel cell exhaust gas dehumidification system, characterized in that, The assembly includes a fuel cell exhaust port (1), a condensation component (2), and a dehumidification component (3). The fuel cell exhaust port (1) is used to discharge the exhaust gas from the fuel cell. The exhaust gas inlet (211) of the condensation component (2) is connected to the fuel cell exhaust port (1) and is used to condense and treat the exhaust gas from the fuel cell. The dehumidification component (3) is installed at the exhaust gas outlet (212) of the condensation component (2) and is used to separate the condensed exhaust gas. The condensation assembly (2) includes an exhaust gas passage (21) and a condensation passage (22). The exhaust gas passage (21) is connected to the fuel cell exhaust port (1) and the dehumidification assembly (3). There are two condensation passages (22), both of which are located on the outer wall of the exhaust gas passage (21) and are used to exchange heat with the exhaust gas in the exhaust gas passage (21) twice. The exhaust passage (21) includes an exhaust inlet (211) for intake and an exhaust outlet (212) for exhaust. The condensation channel (22) includes an air inlet (221) and an air outlet (222). The air inlet (221) introduces ambient cold and dry air through a blower, and the air outlet (222) is used to discharge warm and dry air and is connected to the heating module of the fuel cell. The dehumidification component (3) is vertically installed on the exhaust outlet (212), and a water collection tank (4) is connected below it.

2. The solid-state hydrogen storage fuel cell exhaust gas dehumidification system according to claim 1, characterized in that: The dehumidification assembly (3) includes a mounting housing (31), dehumidification baffles (33), a mounting head (32), and an exhaust port (34). The mounting housing (31) is tubular and vertically mounted on the exhaust outlet (212). The dehumidification baffles (33) are staggered and their front ends are inclined downwards and mounted on the inner wall of the mounting housing (31). The mounting head (32) is mounted on the top of the mounting housing (31), and the top of the mounting head (32) is closed. The exhaust port (34) is opened on the side wall of the mounting head (32).

3. The solid-state hydrogen storage fuel cell exhaust gas dehumidification system according to claim 2, characterized in that: A water collection groove (35) is provided on the top of the mounting housing (31) and at the connection with the mounting housing head (32), and the depth of the water collection groove (35) covers the vent hole (34).

4. The solid-state hydrogen storage fuel cell exhaust gas dehumidification system according to claim 2, characterized in that: The mounting housing (31) is made of thermally conductive material, and heat dissipation fins (36) are installed in a circumferential array on the outer wall.

5. The solid-state hydrogen storage fuel cell exhaust gas dehumidification system according to claim 2, characterized in that: The two condensation channels (22) are both distributed on the exhaust gas channel (21). The two condensation channels (22) are a slow temperature channel (23) and a humidity control channel (24), respectively. The slow temperature channel (23) is used to stabilize the temperature of the exhaust gas, and the humidity control channel (24) is used to reduce the humidity of the exhaust gas to RH≤40% through condensation. The slow temperature channel (23) is installed on the side near the exhaust gas inlet (211), and the humidity control channel (24) is installed on the side near the exhaust gas outlet (212).

6. The solid-state hydrogen storage fuel cell exhaust gas dehumidification system according to claim 5, characterized in that: The condensation channel (22) is composed of a spiral condensation tube and is installed on the outer wall of the exhaust gas channel (21). The distribution length of the slow temperature channel (23) on the exhaust gas channel (21) is greater than the distribution length of the humidity control channel (24) on the exhaust gas channel (21).

7. The solid-state hydrogen storage fuel cell exhaust gas dehumidification system according to claim 6, characterized in that: The air inlet (221) is connected to the blower (6) via a three-way valve (5). Both the three-way valve (5) and the blower (6) are electrically connected to an intelligent controller (7). The intelligent controller (7) is used to adjust the speed of the blower (6) and the opening of the three-way valve (5) according to the temperature and humidity of the exhaust gas in the exhaust gas passage (21).

8. A dehumidification method, based on the solid-state hydrogen storage fuel cell exhaust gas dehumidification system of claim 7, characterized in that, Includes the following steps: The exhaust gas emitted by the fuel cell is passed into the dehumidification component (3) through the exhaust gas inlet (211). Ambient cold and dry air is introduced through the condensation channel (22) set on the outer wall of the exhaust gas channel (21), so that the condensation channel (22) and the exhaust gas in the exhaust gas channel (21) can exchange heat. The exhaust gas passes through the slow temperature channel (23) and the humidity control channel (24) in sequence. The slow-temperature channel (23) reduces the temperature of the exhaust gas in the exhaust gas channel (21) to 35℃-45℃, resulting in constant-temperature exhaust gas; the humidity control channel (24) condenses the constant-temperature exhaust gas, reducing the humidity of the condensed exhaust gas to RH≤40%; Among them, the intelligent controller (7) collects the temperature and humidity signals of the exhaust gas in the exhaust gas channel (21) in real time, and controls the valve flow of the three-way valve (5) so that the cold dry air introduced by the blower (6) enters the slow temperature channel (23) and the humidity control channel (24) at different flow rates. The condensate generated by the constant temperature exhaust gas is separated by the vertically arranged dehumidification component (3) and flows into the water collection tank (4) by gravity. The separated exhaust gas is discharged through the exhaust hole (34) at the top of the dehumidification component (3). Meanwhile, the warm and dry air discharged from the outlet (222) of the condensation channel (22) is partially introduced into the heating module of the fuel cell through the three-way valve (5), and partially discharged.

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