A fuel cell emergency power supply

Abstract

The present invention discloses a fuel cell emergency power supply, including a power supply housing, a fuel cell body, a heat dissipation and dehumidification mechanism, and a cold air delivery mechanism. During heat dissipation and dehumidification, the outside air flows through the emergency power supply and takes away the heat and water vapor inside the emergency power supply; in this process, the cooling plate in the heat dissipation and dehumidification mechanism reduces the temperature in the heat dissipation and dehumidification box, thereby reducing the temperature in the power supply housing; when the original air inside the emergency power supply passes through the heat dissipation and dehumidification box, the water vapor in the air condenses and forms cold water, and at the same time, the heat in the air is absorbed by the cooling plate to form cold air. The cold air flows out from the air outlet to the outside of the power supply housing and then passes through a heat dissipation rod, thereby quickly dissipating the heat of the heat dissipation rod; the cold water lowers the cold air box of the cold air delivery mechanism through an atomizing nozzle, thereby cooling the air entering the emergency power supply through the cold air box, so that the air entering the emergency power supply is low-temperature air, further improving the heat dissipation effect of the emergency power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency power supply, and in particular to a fuel cell emergency power supply. Background Art

[0002] In many places and environments where power supply is needed, such as mines, municipal administration, radio and television, stages, schools, hospitals, power supply, and transportation, it is usually necessary to use the power provided by the power grid for power supply. However, the power grid will inevitably experience power outages due to various situations. In some places, power outages will seriously affect normal work and even endanger people's lives, such as hospitals. Therefore, emergency power supplies are needed. In this case, fuel cell emergency power supplies have the advantages of higher stability, lower noise, and cleaner operation than emergency power supplies such as internal combustion engine generators and diesel generators.

[0003] Fuel cells use fuel (such as hydrogen fuel) and oxygen as raw materials, and convert part of the Gibbs free energy in the chemical energy of the fuel into electrical energy through electrochemical reactions, while generating a large amount of heat and water, which causes the temperature and humidity inside the emergency power supply to rise rapidly. High temperature and high humidity will reduce the power generation efficiency of the emergency power supply, accelerate the aging of key components in the fuel cell, and high temperature will increase the operating temperature of electronic components and cause component failure. Existing fuel cell emergency power supplies mainly achieve heat dissipation and dehumidification effects by setting vents to ventilate the inside of the emergency power supply through the airflow environment in which the emergency power supply is located. However, when the emergency power supply is in a high-temperature environment, the heat dissipation and dehumidification effect of the method of heat dissipation and dehumidification through ventilation is poor, and it is difficult to meet the heat dissipation and dehumidification effects required by the emergency power supply.

[0004] In view of this, it is necessary to improve the existing fuel cell emergency power supply to increase the heat dissipation and dehumidification effects of the fuel cell emergency power supply. Summary of the invention

[0005] The purpose of the present invention is to provide a fuel cell emergency power supply to solve the technical problem that when the existing fuel cell emergency power supply is in a high temperature environment, the heat dissipation and dehumidification method through ventilation is poor, and it is difficult to meet the heat dissipation and dehumidification effects required by the emergency power supply.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A fuel cell emergency power supply, comprising:

[0008] A power supply housing, wherein the power supply housing has an air outlet and a plurality of air inlet holes;

[0009] A fuel cell body, disposed in the power source housing;

[0010] The heat dissipation and dehumidification mechanism comprises a heat dissipation and dehumidification box arranged at one end of the inner cavity of the power supply housing near the air outlet, a cooling fin is embedded on one side of the heat dissipation and dehumidification box near the air outlet, a cooling surface of the cooling fin is located on the inner wall of the heat dissipation and dehumidification box, a heat dissipation rod is arranged on the heat dissipation surface of the cooling fin, the heat dissipation rod penetrates the side wall of the power supply housing and is partially exposed outside the power supply housing, cold water and cold air are separated from the air in the power supply housing when passing through the heat dissipation and dehumidification box, and the cold air is blown toward the heat dissipation rod after passing through the air outlet;

[0011] The cold air delivery mechanism includes a cold air box arranged at one end of the inner cavity of the power supply shell near the air inlet, and an atomizing nozzle is arranged on the top wall of the cold air box. The atomizing nozzle obtains the cold water for water cooling the cold air box to cool the air entering the power supply shell.

[0012] Optionally, the heat dissipation and dehumidification box is filled with a refrigerator.

[0013] Optionally, the heat dissipation and dehumidification box is provided with a plurality of vents on a side away from the air outlet, and the heat dissipation and dehumidification box is provided with an opening on a side close to the air outlet, the cooling fin is arranged on the opening, the cooling fin is in a ring shape, the center hole of the cooling fin is aligned with the air outlet, and the cooling rod surrounds the air outlet.

[0014] Optionally, a convex ring is provided on the inner side of the air outlet of the power supply housing, and a filter is provided on the convex ring.

[0015] Optionally, the fuel cell emergency power supply also includes an auxiliary heat dissipation mechanism, which includes an air outlet pipe arranged on the outside of the air outlet of the power supply shell and an air guide plate aligned with the air outlet, the part of the heat dissipation rod exposed outside the power supply shell is located in the air outlet pipe, and a fan is provided at one end of the air outlet pipe away from the power supply shell.

[0016] Optionally, a water outlet is provided on the bottom surface of the heat dissipation and dehumidification box, and the bottom surface of the heat dissipation and dehumidification box is an inclined surface and is inclined toward the water outlet;

[0017] A ventilation pipe penetrating the bottom plate is arranged on the bottom surface of the heat dissipation and dehumidification box, the upper end of the ventilation pipe is closed, and ventilation holes are arranged on the side wall of the ventilation pipe.

[0018] Optionally, the fuel cell emergency power supply further includes a first water storage tank, the first water storage tank is connected to the water outlet via a first water pipe, and the inner wall of the first water storage tank is coated with a heat insulating material.

[0019] Optionally, a pair of side walls of the cold air box are provided with a plurality of ventilation holes, and the ventilation holes on one side wall of the cold air box are aligned with the air inlet holes; and the cold air box is filled with a water cooler.

[0020] Compared with the prior art, the present invention has the following beneficial effects: when the emergency power supply in a high temperature environment is heat-dissipated and dehumidified, air flows in from the air inlet of the power supply housing and then flows out from the air outlet, thereby taking away the heat and water vapor inside the emergency power supply. In this process, the cooling surface of the cooling plate reduces the temperature inside the heat dissipation and dehumidification box, thereby reducing the temperature inside the power supply housing; and the cooling plate transfers the absorbed heat to the outside of the power supply housing through the heat dissipation rod; when the original air inside the emergency power supply passes through the heat dissipation and dehumidification box, the water vapor in the air condenses and forms cold water, and at the same time, the heat in the air is absorbed by the cooling plate to form cold air. The cold air flows out from the air outlet to the outside of the power supply housing and then passes through the heat dissipation rod, thereby quickly dissipating the heat of the heat dissipation rod; in addition, the cold water formed in the heat dissipation and dehumidification box is sprayed to the cold air box through the atomizing nozzle, thereby reducing the temperature of the cold air box. When the outside air enters the power supply housing through the cold air box, the air is cooled, so that the air flowing into the power supply housing is low-temperature air, further improving the heat dissipation effect of the emergency power supply. Compared with the existing fuel cell emergency power supply heat dissipation method through ventilation, the heat dissipation and dehumidification mechanism of the present invention cools and dehumidifies the original air inside the emergency power supply to obtain cold water and cold air, and uses the cold air to dissipate heat from the heat conducting heat dissipation rod, thereby improving the heat dissipation effect of the emergency power supply, and uses the cold water to cool the cold air box, thereby cooling the gas entering the power supply housing, thereby further improving the heat dissipation effect of the emergency power supply. The fuel cell emergency power supply provided by the present invention is particularly suitable for use in high temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0023] Figure 1 It is a structural schematic diagram of the fuel cell emergency power supply of the present invention;

[0024] Figure 2A schematic diagram of the internal structure of the fuel cell emergency power supply of the present invention;

[0025] Figure 3 An exploded view of the heat dissipation and dehumidification mechanism of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the bottom wall surface of the heat dissipation and dehumidification mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the inner wall surface on one side of the air outlet of the power supply housing of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the outer wall surface on one side of the air outlet of the power supply housing of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure after the cold air conveying mechanism of the present invention is separated from the power supply box.

[0030] Illustrations: 10. Power supply housing; 11. Air outlet; 12. Air inlet; 13. Convex ring; 14. Filter; 15. Through hole; 20. Fuel cell body; 30. Heat dissipation and dehumidification mechanism; 31. Heat dissipation and dehumidification box; 311. Vent; 32. Refrigeration plate; 33. Heat sink; 34. Water outlet; 35. Vent pipe; 36. Vent; 40. Cold air delivery mechanism; 41. Cold air box; 42. Atomizing nozzle; 43. Vent; 50. Auxiliary heat dissipation mechanism; 51. Air duct; 52. Wind guide plate; 53. Fan; 54. Support column; 60. First water tank. DETAILED DESCRIPTION

[0031] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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 creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0033] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] Reference Figures 1 to 7 The embodiment of the present invention provides a fuel cell emergency power supply, including a power supply housing 10 and a fuel cell body 20. The power supply housing 10 has an air outlet 11 and a plurality of air inlets 12, and the air outlet 11 and the air inlet 12 are located on a pair of sides of the power supply housing 10, which is conducive to air flowing in from the air inlet 12 and flowing out from the air outlet 11. The fuel cell body 20 is arranged in the power supply housing 10. During the power generation process of the fuel cell emergency power supply, the fuel (such as hydrogen fuel) and oxygen react to generate heat and water, and the heat vaporizes the water to generate water vapor. Therefore, during the power generation process of the emergency power supply, the internal temperature and humidity will rise rapidly. The fuel of the fuel cell emergency power supply comes from the fuel cell itself, and the process of air flowing in from the air inlet 12 and flowing out from the air outlet 11 will not only provide the fuel cell with the oxygen required for power generation, but also ventilate the emergency power supply, that is, discharge the original air inside the emergency power supply, thereby discharging the heat and water vapor inside the emergency power supply. However, when the fuel cell emergency power supply is in a high temperature environment, the temperature of the air flowing through the emergency power supply is high, and the fuel cell emergency power supply cannot be effectively cooled by air flow. Therefore, a fuel cell emergency power supply provided by the present invention also includes a heat dissipation and dehumidification mechanism 30 and a cold air delivery mechanism 40.

[0035] The heat dissipation and dehumidification mechanism 30 is disposed at one end of the inner cavity of the power housing 10 close to the air outlet 11 , and the cold air delivery mechanism 40 is disposed at one end of the inner cavity of the power housing 10 close to the air inlet 12 . The hot and high-temperature air from the outside enters the power supply housing 10 through the air inlet 12 and then enters the cold air conveying mechanism 40. The cold air conveying mechanism 40 cools down the high-temperature air, and after forming low-temperature air, it enters the power supply housing 10 to provide oxygen for the fuel cell body 20. The heat and water vapor generated after the fuel cell generates electricity are integrated into the air to form high-temperature and high-humidity air. Before flowing out of the power supply housing 10, the high-temperature and high-humidity air passes through the heat dissipation and dehumidification mechanism 30. In the heat dissipation and dehumidification mechanism 30, the water vapor in the high-temperature and high-humidity air condenses and forms cold water, and at the same time, the heat in the air is absorbed to form cold air. The cold water is used to cool down the cold air conveying mechanism 40, and the cold air is used to accelerate the heat dissipation of the power supply housing 10, thereby realizing efficient heat dissipation and dehumidification of the fuel cell emergency power supply, making full use of heat exchange, and improving energy utilization.

[0036] Specifically, the heat dissipation and dehumidification mechanism 30 includes a heat dissipation and dehumidification box 31 disposed at one end of the inner cavity of the power supply housing 10 near the air outlet 11, and a side wall of the heat dissipation and dehumidification box 31 is attached to the inner side wall of the power supply housing 10 where the air outlet 11 is located. The heat dissipation and dehumidification box 31 has an opening on the side near the air outlet 11, and the opening is aligned with the air outlet 11. The heat dissipation and dehumidification box 31 is provided with a plurality of vents 311 on the side away from the air outlet 11, so that air flows in from the vents 311 and flows out of the power supply housing 10 from the opening through the air outlet 11. A cooling fin 32 is embedded on the side of the heat dissipation and dehumidification box 31 near the air outlet 11. Optionally, the cooling fin 32 is disposed on the opening. The cooling fin 32 is annular in shape, and the center hole of the cooling fin 32 is aligned with the air outlet 11. Optionally, the thickness of the cooling fin 32 is equal to the thickness of the side wall of the heat dissipation and dehumidification box 31, so that the cooling fin 32 becomes a part of the side wall of the heat dissipation and dehumidification box 31; the central hole of the cooling fin 32 is equal to the diameter of the air outlet 11. The air in the heat dissipation and dehumidification box 31 flows out from the central hole of the cooling fin 32. The cooling surface of the cooling fin 32 is located on the inner wall of the heat dissipation and dehumidification box 31, that is, the cooling surface of the cooling fin 32 faces the inner cavity of the heat dissipation and dehumidification box 31 to absorb the heat in the inner cavity of the heat dissipation and dehumidification box 31; a heat dissipation rod 33 is arranged on the heat dissipation surface of the cooling fin 32, and the heat dissipation rod 33 passes through the side wall of the power supply housing 10 and is partially exposed outside the power supply housing 10, so that the cooling fin 32 transfers the absorbed heat to the outside of the power supply housing 10. Optionally, a through hole 15 is provided on the power supply housing 10 for the heat dissipation rod 33 to pass through. It should be noted that the inner wall of the through hole 15 and the inner wall surface of the heat dissipation and dehumidification box 31 that is in contact with the refrigeration fin 32 are coated with a heat insulation film to prevent the heat dissipation surface of the refrigeration fin 32 and the heat dissipation rod 33 from transferring heat to the power supply housing 10. Since the shape of the refrigeration fin 32 is annular, the heat dissipation rod 33 surrounds the central hole of the refrigeration fin 32, that is, the heat dissipation rod 33 surrounds the air outlet 11.

[0037] The heat dissipation and dehumidification box 31 is filled with a refrigerant, which is quartz glass particles with excellent thermal conductivity. The diameter of the refrigerant is larger than the diameter of the vent 311 to prevent the refrigerant from flowing out. A convex ring 13 is provided on the inner side of the air outlet 11 of the power supply housing 10, and a filter 14 is provided on the convex ring 13. Optionally, the thickness of the convex ring 13 is equal to the thickness of the refrigeration sheet 32, so that one side of the filter 14 is on the same plane as the inner side of the heat dissipation and dehumidification box 31 to prevent the refrigerant from flowing out through the air outlet 11.

[0038] The cooling surface of the cooling fin 32 is in contact with the cooling element. When the cooling fin 32 is working, the cooling fin 32 absorbs the heat of the cooling element, so that the cooling element forms low-temperature particles. When the heat and water vapor generated by the fuel cell after power generation are melted into the air, forming high-temperature and high-humidity air and flowing through the heat dissipation dehumidification box 31, the high-temperature and high-humidity air contacts the cooling element, and the water vapor in the air condenses and forms cold water. At the same time, the heat in the air is absorbed by the cooling fin 32 to form cold air. The heat absorbed by the cooling fin 32 is transferred out of the power supply housing 10 through the heat dissipation rod 33, and the cold air flows out of the power supply housing 10 through the air outlet 11 and flows through the heat dissipation rod 33, thereby accelerating the heat dissipation efficiency of the heat dissipation rod 33.

[0039] The fuel cell emergency power supply also includes an auxiliary heat dissipation mechanism 50, and the auxiliary heat dissipation mechanism 50 includes an air outlet pipe 51 arranged on the outside of the air outlet 11 of the power supply housing 10. The portion of the heat dissipation rod 33 exposed outside the power supply housing 10 is located in the air outlet pipe 51, and a fan 53 is arranged at one end of the air outlet pipe 51 away from the power supply housing 10 to speed up the flow rate of the air flow. When the fan 53 is working, the fan 53 causes the air in the power supply housing 10 to flow out through the air outlet 11. At this time, most of the outflowing air is gathered on the airflow column formed by the air outlet 11, and only a small part of the air will be dispersed and contact the heat dissipation rod 33. Therefore, the auxiliary heat dissipation mechanism 50 also includes an air guide plate 52 arranged on the outside of the air outlet 11. Specifically, a support column 54 surrounding the air outlet 11 is provided on the outer side of the air outlet 11 of the power supply housing 10, and the air guide plate 52 is provided on the support column 54, so that the air guide plate 52 is aligned with the air outlet 11, and then guides the air flowing out of the air outlet 11 to the heat sink 33, thereby increasing the amount of air passing through the heat sink 33, thereby accelerating the heat dissipation efficiency of the heat sink 33.

[0040] It should be noted that the cooling plate 32 utilizes the Peltier effect to transfer energy, that is, when current passes through the thermocouple, one of the nodes (heat dissipation surface) dissipates heat while the other node (cooling surface) absorbs heat. When the cooling plate 32 is powered on, the heat on the cooling surface is transferred to the heat dissipation surface, resulting in a decrease in the temperature of the cooling surface and an increase in the temperature of the heat dissipation surface. In the present invention, the temperature in the heat dissipation dehumidification box 31 is reduced under the cooling of the cooling plate 32, and the heat is transferred to the outside of the power supply housing 10 through the heat dissipation rod 33. In addition, the material of the heat dissipation dehumidification box 31 is a material with a high thermal conductivity, which is conducive to heat dissipation of the power supply housing through the heat dissipation dehumidification box 31.

[0041] It should be further explained that the conventional heat dissipation method is to transfer heat to the outside of the housing through the heat sink, and then increase the airflow through the fan to increase the heat dissipation efficiency of the heat sink. However, when the environment is hot, the airflow driven by the fan is a high-temperature airflow, that is, the air flowing through the heat sink is high-temperature air, and the heat dissipation effect is not good in this case. The present invention uses the cold air generated by the heat dissipation dehumidification box 31 to dissipate heat from the heat dissipation rod 33, which greatly increases the heat dissipation efficiency of the heat dissipation rod 33.

[0042] The bottom surface of the heat dissipation and dehumidification box 31 is provided with a water outlet 34. The cold water condensed in the heat dissipation and dehumidification box 31 flows out of the heat dissipation and dehumidification box 31 through the water outlet 34. The bottom surface of the heat dissipation and dehumidification box 31 is an inclined surface, and is inclined toward the water outlet 34, so that the cold water flows to the water outlet 34. The bottom surface of the heat dissipation and dehumidification box 31 is provided with a vent pipe 35 that penetrates the bottom plate. The vent pipe 35 protrudes from the bottom surface of the heat dissipation and dehumidification box 31, the upper end of the vent pipe 35 is closed, and the side wall of the vent pipe 35 is provided with a vent hole 36. The air under the heat dissipation and dehumidification box 31 flows into the heat dissipation and dehumidification box 31 through the vent pipe 35, thereby avoiding the air in the bottom space of the heat dissipation and dehumidification box 31 from being unable to flow into the heat dissipation and dehumidification box 31, or avoiding the need to seal the bottom space of the heat dissipation and dehumidification box 31, thereby improving the space utilization rate inside the power supply housing 10. In addition, the vent hole 36 is located at the portion of the vent pipe 35 protruding from the bottom surface of the heat dissipation and dehumidification box 31, that is, the vent hole 36 is located above the bottom surface of the heat dissipation and dehumidification box 31, thereby preventing the condensed cold water from flowing out of the heat dissipation and dehumidification box 31 through the vent hole 36.

[0043] The fuel cell emergency power supply further includes a first water storage tank 60, which is connected to the water outlet 34 through a first water delivery pipe (not shown) to collect the condensed cold water. The inner wall of the first water storage tank 60 is coated with a heat insulating material to prevent external heat from entering the first water storage tank 60 and increasing the temperature of the cold water.

[0044] The cold air delivery mechanism 40 includes a cold air box 41 disposed at one end of the inner cavity of the power supply housing 10 near the air inlet 12. One side wall of the cold air box 41 is attached to the inner side wall of the power supply housing 10 where the air inlet 12 is located. A pair of side walls of the cold air box 41 are provided with a plurality of ventilation holes 43, and the ventilation holes 43 on one side wall of the cold air box 41 are aligned with the air inlet 12. When the outside air flows into the power supply housing 10, it immediately flows into the cold air box 41, and then flows from the ventilation holes 43 on the other side wall of the cold air box 41 to the fuel cell body 20 to provide oxygen to the fuel cell body 20. The cold air box 41 is filled with water coolers (not shown), and the water coolers are quartz glass particles with excellent thermal conductivity. The diameter of the water coolers is larger than the diameter of the vent 311 to prevent the cold air from flowing out. An atomizing nozzle 42 is provided on the top wall of the cold air box 41, and the atomizing nozzle 42 is connected to the first water storage tank 60 through a second water delivery pipe (not shown) to extract cold water from the first water storage tank 60. The atomizing nozzle 42 sprays cold water to the water cooler to reduce the temperature of the water cooler. When the outside air flows through the cold air box 41, the air contacts the water cooler to reduce the temperature of the air, thereby cooling the gas entering the power supply housing 10, so as to further improve the heat dissipation effect of the emergency power supply.

[0045] Furthermore, the fuel cell emergency power supply also includes a second water storage tank (not shown) for collecting liquid water generated during power generation by the fuel cell body 20 and liquid water in the cold air box 41 after cooling the water cooler.

[0046] It should be noted that the air flowing into the power supply housing 10 through the cold air box 41 also contains water vapor, but when using the fuel cell emergency power supply in a high temperature and dry environment, the introduction of low temperature and humid air is more conducive to the power generation of the hydrogen fuel cell emergency power supply. This is because the core part of the hydrogen fuel cell is the proton exchange membrane (PEM), and its performance is highly dependent on the wetness of the membrane. A moist membrane can conduct protons (H+) more effectively, thereby improving the efficiency of the fuel cell. If the membrane is dry, the conduction of protons will be hindered, resulting in a decrease in battery performance. In addition, dry air may cause the membrane to lose moisture, making it fragile and easy to crack, shortening the life of the fuel cell. Humid air helps to maintain the elasticity and integrity of the membrane and extend the service life of the battery.

[0047] The present invention discloses a fuel cell emergency power supply, and the specific implementation method is as follows: when the emergency power supply in a high temperature environment is subjected to heat dissipation and dehumidification, air flows in from the air inlet 12 of the power supply housing 10, and then flows out from the air outlet 11, thereby taking away the heat and water vapor inside the emergency power supply. In this process, the cooling surface of the cooling plate 32 reduces the temperature inside the heat dissipation and dehumidification box 31, thereby reducing the temperature inside the power supply housing 10; and the cooling plate 32 transfers the absorbed heat to the outside of the power supply housing 10 through the heat dissipation rod 33; when the original air inside the emergency power supply passes through the heat dissipation and dehumidification box 31, the water vapor in the air condenses and forms cold water, and at the same time, the heat in the air is absorbed by the cooling plate 32 to form cold air. The cold air flows out of the air outlet 11 to the outside of the power supply housing 10 and passes through the heat sink 33, thereby quickly dissipating the heat of the heat sink 33; in addition, the cold water formed in the heat dissipation and dehumidification box 31 is sprayed to the cold air box 41 through the atomizing nozzle 42, thereby reducing the temperature of the cold air box 41. When the outside air enters the power supply housing 10 through the cold air box 41, the air is cooled, so that the air flowing into the power supply housing 10 is low-temperature air, further improving the heat dissipation effect of the emergency power supply. Compared with the existing fuel cell emergency power supply heat dissipation method through ventilation, the heat dissipation and dehumidification mechanism 30 of the present invention cools and dehumidifies the original air inside the emergency power supply to obtain cold water and cold air, and uses the cold air to dissipate the heat of the heat conduction heat sink 33, thereby improving the heat dissipation effect of the emergency power supply, and uses the cold water to cool the cold air box 41, thereby cooling the gas entering the power supply housing 10, thereby further improving the heat dissipation effect of the emergency power supply. The fuel cell emergency power supply provided by the present invention is particularly suitable for use in high temperature and dry conditions.

[0048] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fuel cell emergency power supply, characterized in that: include: A power supply housing (10), the power supply housing (10) having an air outlet (11) and a plurality of air inlet holes (12); A fuel cell body (20) is arranged in the power source housing (10); The heat dissipation and dehumidification mechanism (30) comprises a heat dissipation and dehumidification box (31) arranged at one end of the inner cavity of the power supply housing (10) close to the air outlet (11); a cooling fin (32) is embedded on one side of the heat dissipation and dehumidification box (31) close to the air outlet (11); a cooling surface of the cooling fin (32) is located on the inner wall of the heat dissipation and dehumidification box (31); a heat dissipation rod (33) is arranged on the heat dissipation surface of the cooling fin (32); the heat dissipation rod (33) passes through the side wall of the power supply housing (10) and is partially exposed outside the power supply housing (10); when the air in the power supply housing (10) passes through the heat dissipation and dehumidification box (31), cold water and cold air are separated; the cold air passes through the air outlet (11) and blows toward the heat dissipation rod (33); The cold air conveying mechanism (40) comprises a cold air box (41) arranged at one end of the inner cavity of the power supply housing (10) close to the air inlet hole (12), and an atomizing nozzle (42) is arranged on the top wall of the cold air box (41). The atomizing nozzle (42) obtains the cold water for water cooling the cold air box (41) to cool the air entering the power supply housing (10).

2. The fuel cell emergency power supply according to claim 1, characterized in that: The heat dissipation and dehumidification box (31) is filled with a refrigerator.

3. The fuel cell emergency power supply according to claim 1, characterized in that: A plurality of ventilation holes (311) are provided on a side of the heat dissipation and dehumidification box (31) away from the air outlet (11), and an opening is provided on a side of the heat dissipation and dehumidification box (31) close to the air outlet (11). The cooling fin (32) is arranged on the opening. The cooling fin (32) is in the shape of a ring. The central hole of the cooling fin (32) is aligned with the air outlet (11), and the heat dissipation rod (33) surrounds the air outlet (11).

4. The fuel cell emergency power supply according to claim 1, characterized in that: A convex ring (13) is provided inside the air outlet (11) of the power supply housing (10), and a filter screen (14) is provided on the convex ring (13).

5. The fuel cell emergency power supply according to claim 1, characterized in that: The invention also comprises an auxiliary heat dissipation mechanism (50), wherein the auxiliary heat dissipation mechanism (50) comprises an air outlet pipe (51) arranged on the outside of the air outlet (11) of the power supply housing (10) and an air guide plate (52) aligned with the air outlet (11), wherein the portion of the heat dissipation rod (33) exposed outside the power supply housing (10) is located inside the air outlet pipe (51), and a fan (53) is arranged at one end of the air outlet pipe (51) away from the power supply housing (10).

6. The fuel cell emergency power supply according to claim 1, characterized in that: The bottom surface of the heat dissipation and dehumidification box (31) is provided with a water outlet (34); the bottom surface of the heat dissipation and dehumidification box (31) is an inclined surface and is inclined towards the water outlet (34); A ventilation pipe (35) penetrating the bottom plate is provided on the bottom surface of the heat dissipation and dehumidification box (31); the upper end of the ventilation pipe (35) is closed, and ventilation holes (36) are provided on the side wall of the ventilation pipe (35).

7. The fuel cell emergency power supply according to claim 6, characterized in that: It also comprises a first water storage tank (60), the first water storage tank (60) being in communication with the water outlet (34) via a first water delivery pipe, and the inner wall of the first water storage tank (60) being coated with a heat insulating material.

8. The fuel cell emergency power supply according to claim 1, characterized in that: A pair of side walls of the cold air box (41) are provided with a plurality of ventilation holes (43), and the ventilation holes (43) on one side wall of the cold air box (41) are aligned with the air inlet holes (12); the cold air box (41) is filled with a water cooler.

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