Fuel cell engine

Abstract

The present invention discloses a fuel cell engine, which comprises a fixed frame. The fixed frame includes a first side fixing plate, a second side fixing plate, a third side fixing plate and a fourth side fixing plate; a fuel cell, which includes a housing, an electric stack, a distributor, and a first end cap and a second end cap that are opposite in the third direction; a hydrogen supply system, which is installed on the first side fixing plate; a cooling circulation system, which is installed on the first side fixing plate; an air supply system, which is installed on the third side fixing plate; and a power distribution device, which is installed on the second side fixing plate. The fuel cell engine according to the embodiment of the present invention has the advantages of high integration, compact structure, high volume power density, small volume, easy assembly, high strength, good seismic resistance, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to a fuel cell engine. Background Art

[0002] Fuel cells have attracted increasing attention from various countries due to their characteristics such as being unaffected by the Carnot cycle and pollution-free. A fuel cell engine system generally consists of a fuel cell, a hydrogen supply system, an air supply system, and other electrical components. Currently, most fuel cell engine systems adopt an integrated structure, integrating all components together. However, in many existing fuel cell engine systems, such as CN110994001A, CN104659393A, CN209912968U, etc., due to the limiting factors of the stack structure itself, chaotic arrangement of components, and unreasonable pipeline layout, the integration degree of the system is not high, thereby increasing the volume and weight of the fuel cell engine system, which is not conducive to the miniaturization and lightweight of the fuel cell engine system. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the present invention provides a fuel cell engine.

[0004] The fuel cell engine according to an embodiment of the present invention includes:

[0005] A fixed frame, the fixed frame includes a first side fixing plate, a second side fixing plate, a third side fixing plate, and a fourth side fixing plate. The first side fixing plate, the second side fixing plate, the third side fixing plate, and the fourth side fixing plate are connected and define an installation space, wherein the first side fixing plate and the second side fixing plate are opposite to each other along a first direction, and the third side fixing plate and the fourth side fixing plate are opposite to each other along a second direction;

[0006] A fuel cell, the fuel cell is installed in the installation space. The fuel cell includes a housing, a stack, a distributor, and a first end cover and a second end cover opposite to each other in a third direction. The first end cover and the second end cover are provided at both ends of the housing. An installation cavity is defined between the first end cover, the second end cover, and the housing. The stack is provided in the installation cavity. The distributor is provided between the stack and the first end cover. The first end cover has a first side surface and a second side surface opposite to each other in the first direction, the first end cover has a third side surface and a fourth side surface opposite to each other in the second direction, and the distributor has a fifth side surface and a sixth side surface opposite to each other in the first direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other;

[0007] A hydrogen supply system, the hydrogen supply system is installed on the first side fixing plate, and the first pipeline assembly of the hydrogen supply system is connected to the fifth side surface of the distributor;

[0008] A cooling circulation system, the cooling circulation system is installed on the first side fixing plate, the cooling medium inlet pipe of the cooling circulation system passes through the first side surface of the first end cover so as to be connected to the distributor, and the cooling medium outlet pipe of the cooling circulation system is connected to the sixth side surface of the distributor;

[0009] An air supply system, the air supply system is installed on the third side fixing plate, and the second pipeline assembly of the air supply system passes through the third side surface of the first end cover so as to be connected to the distributor; and

[0010] A power distribution device, the power distribution device is installed on the second side fixing plate, and the power distribution device is electrically connected to the fuel cell.

[0011] Therefore, the fuel cell engine according to the embodiment of the present invention has the advantages of high integration, compact structure, high volume power density, small volume, convenient assembly, high strength, good seismic performance, etc.

[0012] In some embodiments, the first side fixing plate, the second side fixing plate, the third side fixing plate and the fourth side fixing plate are connected in sequence, the first direction is the left-right direction, the second direction is the up-down direction, the third direction is the front-back direction, wherein the first side fixing plate is located on the left side of the second side fixing plate, the third side fixing plate is located below the fourth side fixing plate, and the first side surface and the fifth side surface are located on the same side of the stack.

[0013] In some embodiments, the hydrogen supply system includes:

[0014] The first pipeline assembly, the first pipeline assembly includes a first pipeline, a second pipeline and a third pipeline;

[0015] A hydrogen injector, the first end of the first pipeline is connected to the outlet of the hydrogen injector, and the second end of the first pipeline is connected to the hydrogen inlet on the fifth side surface of the distributor;

[0016] A steam-water separator, the first end of the third pipeline is connected to the inlet of the steam-water separator, and the second end of the third pipeline is connected to the hydrogen outlet on the fifth side surface of the distributor;

[0017] A hydrogen circulation pump, an outlet of the steam-water separator is connected to an inlet of the hydrogen circulation pump, a first end of the second pipeline is connected to an outlet of the hydrogen circulation pump, and a second end of the second pipeline is connected to a hydrogen inlet on the fifth side surface of the distributor; and

[0018] A steam trap, a water outlet of the steam-water separator is connected to an inlet of the steam trap;

[0019] Optionally, the hydrogen circulation pump and the steam trap are electrically connected to the power distribution device.

[0020] In some embodiments, the hydrogen circulation pump is located behind the hydrogen injector, the steam-water separator and the steam trap, the hydrogen injector is located above the steam-water separator, and the steam trap is located below the steam-water separator.

[0021] In some embodiments, the cooling circulation system includes:

[0022] A cooling medium outlet pipe, a first end of the cooling medium outlet pipe is connected to a water outlet on the sixth side surface of the distributor;

[0023] A heater, a second end of the cooling medium outlet pipe is connected to an inlet of the heater;

[0024] A thermostat, the thermostat includes a first inlet, a second inlet and a thermostat outlet, the thermostat outlet of the thermostat communicates with each of the first inlet and the second inlet of the thermostat, wherein the first inlet of the thermostat is connected to an outlet of the heater, and the second inlet of the thermostat can be connected to an external heat dissipation device;

[0025] A cooling circulation water pump, an inlet of the cooling circulation water pump is connected to the thermostat outlet of the thermostat; and

[0026] A cooling medium inlet pipe, a first end of the cooling medium inlet pipe is connected to an outlet of the cooling circulation water pump, and a second end of the cooling medium inlet pipe passes through the first side surface of the first end cover so as to be connected to a water inlet of the distributor;

[0027] Optionally, the cooling circulation water pump, the thermostat and the heater are electrically connected to the power distribution device;

[0028] Optionally, the cooling circulation water pump is located in front of the thermostat and the heater, and the thermostat is located to the left of the heater.

[0029] In some embodiments, the cooling circulation system is located below the hydrogen supply system.

[0030] In some embodiments, the air supply system includes:

[0031] The second pipeline assembly, which includes a fourth pipeline and a fifth pipeline;

[0032] An air humidifier, which includes a first cavity and a second cavity. The first cavity cooperates with the second cavity so that the air in the first cavity can exchange heat with the air in the second cavity. The first cavity has a first inlet and a second outlet, and the second cavity has a second inlet and a second outlet. Wherein, the first end of the fourth pipeline is connected to the first outlet of the first cavity, the second end of the fourth pipeline passes through the third side surface of the first end cover so as to be connected to the air inlet of the distributor, the first end of the fifth pipeline is connected to the second inlet of the second cavity, and the second end of the fifth pipeline passes through the third side surface of the first end cover so as to be connected to the air outlet of the distributor; and

[0033] A throttle valve, the inlet of which is connected to the second outlet of the second cavity;

[0034] Optionally, the air humidifier and the throttle valve are electrically connected to the power distribution device;

[0035] Optionally, the air humidifier is located behind the throttle valve.

[0036] In some embodiments, the fuel cell is mounted in the installation space by bolts, the hydrogen supply system is mounted on the first side fixing plate by bolts, the air supply system is mounted on the third side fixing plate by bolts, the cooling circulation system is mounted on the first side fixing plate by bolts, and the power distribution device is mounted on the second side fixing plate.

[0037] In some embodiments, the lower end of the first side fixing plate is located below the third side fixing plate.

[0038] In some embodiments, the water outlet of the distributor is located at the lower end of the sixth side surface of the distributor. Description of the Drawings

[0039] Figure 1 is a schematic structural diagram of a fuel cell engine according to an embodiment of the present invention.

[0040] Figure 2 is a schematic structural diagram of a fuel cell and a fixing frame according to an embodiment of the present invention.

[0041] Figure 3 is a schematic structural diagram of a hydrogen supply system, a cooling circulation system and an air supply system according to an embodiment of the present invention.

[0042] Figure 4 It is a schematic structural view of a fuel cell and a fixed frame according to an embodiment of the present invention.

[0043] Figure 5 It is a schematic structural view of a bottom view of a fuel cell engine according to an embodiment of the present invention. Detailed Embodiments

[0044] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0045] A fuel cell engine 1000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings. As Figures 1 to 5 shown, the fuel cell engine 1000 according to an embodiment of the present invention includes a fixed frame 100, a fuel cell 200, a hydrogen supply system, an air supply system, a cooling circulation system, and a power distribution device 600.

[0046] The fixed frame 100 includes a first side fixing plate 110, a second side fixing plate 120, a third side fixing plate 130, and a fourth side fixing plate 140. The first side fixing plate 110, the second side fixing plate 120, the third side fixing plate 130, and the fourth side fixing plate 140 are connected and define an installation space. Among them, the first side fixing plate 110 and the second side fixing plate 120 are opposite to each other in the first direction, and the third side fixing plate 130 and the fourth side fixing plate 140 are opposite to each other in the second direction.

[0047] The fuel cell 200 is installed in the installation space. The fuel cell 200 includes a housing 220, a stack, a distributor 230, and a first end cap 210 and a second end cap that are opposite to each other in the third direction. The first end cap 210 and the second end cap are provided at both ends of the housing 220. An installation cavity is defined between the first end cap 210, the second end cap, and the housing 22. The stack is provided in the installation cavity, and the distributor 230 is provided between the stack and the first end cap 210. The first end cap 210 has a first side surface 211 and a second side surface 212 that are opposite to each other in the first direction. The first end cap has a third side surface 213 and a fourth side surface 214 that are opposite to each other in the second direction. The distributor 230 has a fifth side surface 231 and a sixth side surface 232 that are opposite to each other in the first direction. Among them, the first direction, the second direction, and the third direction are perpendicular to each other.

[0048] The hydrogen supply system is installed on the first side fixing plate 110, and the first pipeline assembly of the hydrogen supply system is connected to the fifth side surface 231 of the distributor 230. The cooling circulation system is installed on the first side fixing plate 110. The cooling medium inlet pipe 411 of the cooling circulation system passes through the first side surface 211 of the first end cover 210 so as to be connected to the distributor 230, and the cooling medium outlet pipe 412 of the cooling circulation system is connected to the sixth side surface 232 of the distributor 230.

[0049] The air supply system is installed on the third side fixing plate. The second pipeline assembly of the air supply system passes through the third side surface 213 of the first end cover 210 so as to be connected to the distributor 230. The power distribution device 600 is installed on the second side fixing plate 120, and the power distribution device 600 is electrically connected to the fuel cell 200.

[0050] The fuel cell engine 1000 according to an embodiment of the present invention installs the hydrogen supply system and the cooling circulation system on the first side fixing plate 110, and the air supply system on the third side fixing plate 130. Thus, not only can the integration degree of the fuel cell engine 1000 be improved, but also the fuel cell engine 1000 is convenient for assembly, and the assembly efficiency, maintenance efficiency and safety performance of the fuel cell engine can be effectively improved. At the same time, the fuel cell engine 1000 adopts a frame-type installation structure (i.e., a fixed frame 100 is provided), which is not only convenient for the assembly of the fuel cell engine 1000, but also can improve the seismic resistance and overall strength of the fuel cell engine 1000.

[0051] Moreover, by connecting the first pipeline assembly to the fifth side surface 231 of the distributor 230, the cooling medium inlet pipe 411 of the circulation system passing through the first side surface 211, the cooling medium outlet pipe 412 of the cooling circulation system being connected to the sixth side surface 232 of the distributor 230, and the second pipeline assembly passing through the third side surface 213, the pipelines of the fuel cell engine 1000 can be centrally arranged and reasonably arranged, so that the structure of 1000 is more compact, further improving the integration degree and volume power density of the fuel cell engine 1000 and reducing the volume of 1000.

[0052] Therefore, the fuel cell engine 1000 according to an embodiment of the present invention has the advantages of high integration degree, compact structure, high volume power density, small volume, convenient for assembly, high strength, good seismic resistance, etc.

[0053] As Figure 1 shown, the fuel cell engine 1000 according to an embodiment of the present invention includes a fixed frame 100, a fuel cell 200, a hydrogen supply system, an air supply system, a cooling circulation system and a power distribution device 600.

[0054] The fixed frame 100 includes a first side fixing plate 110, a second side fixing plate 120, a third side fixing plate 130, and a fourth side fixing plate 140. The first side fixing plate 110, the second side fixing plate 120, the third side fixing plate 130, and the fourth side fixing plate 140 are connected and define an installation space. The first side fixing plate and the second side fixing plate 120 are opposite to each other in the first direction, and the third side fixing plate 130 and the fourth side fixing plate 140 are opposite to each other in the second direction.

[0055] As Figure 2 shown, in some embodiments, the first side fixing plate 110, the second side fixing plate 120, the third side fixing plate 130, and the fourth side fixing plate 140 are connected in sequence. Specifically, the first direction is the left - right direction, the second direction is the up - down direction, and the third direction is the front - back direction. The left - right direction is as shown by the arrow A in Figure 4 , the left - right direction is as shown by the arrow B in Figure 4 , and the front - back direction is as shown by the arrow C in Figure 5 .

[0056] The first side fixing plate 110 is located on the left side of the second side fixing plate 120, and the third side fixing plate 130 is located below the fourth side fixing plate 140. That is, the first side fixing plate 110 is located at the left end of the fixed frame 100, the second side fixing plate 120 is located at the right end of the fixed frame 100, the third side fixing plate 130 is located at the lower end of the fixed frame 100, and the fourth side fixing plate 140 is located at the upper end of the fixed frame 100. The installation space is located in the middle of the fixed frame 100, and the fixed frame 100 can protect the fuel cell 200 in the installation space. The first side 211 and the fifth side 231 are on the same side of the fuel cell stack. For example, the first side 211 and the fifth side 231 are on the left side of the fuel cell stack.

[0057] The fuel cell 200 is installed in the installation space, that is, the fuel cell 200 is located in the middle of the fixed frame 100. This facilitates the connection of the fuel cell 200 to the hydrogen supply system, the air supply system, the cooling circulation system, and the power distribution device 600.

[0058] The fuel cell 200 is installed in the installation space. The fuel cell 200 includes a housing 220, a fuel cell stack, a distributor 230, and a first end cap 210 and a second end cap that are opposite to each other in the third direction. The first end cap 210 and the second end cap are provided at both ends of the housing 220. An installation cavity is defined between the first end cap 210, the second end cap, and the housing 22. The fuel cell stack is provided in the installation cavity, and the distributor 230 is provided between the fuel cell stack and the first end cap 210. The first end cap 210 has a first side 211 and a second side 212 that are opposite to each other in the first direction. The first end cap has a third side 213 and a fourth side 214 that are opposite to each other in the second direction. The distributor 230 has a fifth side 231 and a sixth side 232 that are opposite to each other in the first direction. Among them, the first direction, the second direction, and the third direction are perpendicular to each other.

[0059] As Figure 2 shown, in some embodiments, the first end cap 210 is located in front of the second end cap, that is, the first end cap 210 is located at the front end of the fuel cell 200. The first side surface 211 is located on the left side of the second side surface 212, that is, the first side surface 211 is the left side surface of the first end cap 210, and the third side surface 213 is located below the fourth side surface 214, that is, the third side surface 213 is the lower end surface of the first end cap 210.

[0060] Optionally, the first side surface 211 and the fifth side surface 231 are located on the same side of the stack. Therefore, the fifth side surface 231 is the left side surface of the dispenser 230, and the sixth side surface 232 is the lower end surface of the dispenser 230.

[0061] Specifically, fixing holes are provided at the four corners of the lower end surface of the housing 220, and the fuel cell 200 is fixed to the third side fixing plate 130 by bolts. The stack is located in the installation cavity, and the dispenser 230 is located between the first end cap 210 and the housing 220. The first end cap 210, the second end cap, and the housing 220 wrap and protect the stack and the dispenser 230.

[0062] As Figure 1 shown, in some embodiments, the hydrogen supply system is installed on the first side fixing plate 110, that is, the hydrogen supply system is located on the left side of the fuel cell 200.

[0063] Specifically, the hydrogen supply system includes a hydrogen injector 320, a hydrogen circulation pump 330, a steam-water separator 340, a drain valve 350, and a first pipeline assembly. The first pipeline assembly includes a first pipeline 311, a second pipeline 312, and a third pipeline 313. The hydrogen injector 320, the hydrogen circulation pump 330, and the drain valve 350 are electrically connected to the power distribution device 600, and the power distribution device 600 supplies power to the hydrogen injector 320, the hydrogen circulation pump 330, and the drain valve 350.

[0064] The first pipeline assembly of the hydrogen supply system is connected to the fifth side surface 231 of the dispenser 230, and the hydrogen supply system is connected to the hydrogen inlet and the hydrogen outlet of the dispenser 230 through the first pipeline assembly. The first end of the first pipeline 311 is connected to the outlet of the hydrogen injector 320, and the second end of the first pipeline 311 is connected to the hydrogen inlet on the fifth side surface 231 of the dispenser 230. Therefore, the hydrogen injector 320 can transport hydrogen with a certain pressure and flow rate through the first pipeline 311 to the hydrogen inlet of the dispenser 230, and then to the hydrogen chamber of the fuel cell 200.

[0065] The first end of the third pipeline 313 is connected to the inlet of the steam-water separator 340, and the second end of the third pipeline 313 is connected to the hydrogen outlet on the fifth side 231 of the distributor 230. Therefore, the hydrogen containing water vapor coming out of the hydrogen outlet enters the steam-water separator 340 through the third pipeline 313 and is separated into liquid water and hydrogen.

[0066] The inlet of the hydrogen circulation pump 330 is connected to the gas outlet of the steam-water separator 340. The first end of the second pipeline 312 is connected to the outlet of the hydrogen circulation pump 330, and the second end of the second pipeline 312 is connected to the hydrogen inlet on the fifth side 231 of the distributor 230. Therefore, the hydrogen coming out of the gas outlet of the steam-water separator 340 is pressurized by the hydrogen circulation pump 330 and enters the hydrogen inlet of the distributor 230 through the second pipeline 312, and then enters the hydrogen chamber of the fuel cell 200.

[0067] The water inlet of the steam trap 350 is connected to the water outlet of the steam-water separator 340. The liquid water is discharged from the water outlet of the steam-water separator 340 into the steam trap 350 and thus discharged into the atmosphere.

[0068] Optionally, the hydrogen circulation pump 330 is located behind the hydrogen injector 320, the steam-water separator 340 and the steam trap 350. The hydrogen injector 320 is located above the steam-water separator 340, and the steam trap 350 is located below the steam-water separator 340.

[0069] As Figure 1 shown, in some embodiments, the cooling circulation system is installed on the first side fixing plate 110, that is, the cooling circulation system is located on the left side of the fuel cell 200.

[0070] The cooling circulation system includes a cooling medium outlet pipe 412, a heater, a thermostat 430, a cooling circulation water pump 420 and a cooling medium inlet pipe 411.

[0071] The first end of the cooling medium outlet pipe 412 is connected to the water outlet of the sixth side 232 of the distributor 230, and the second end of the cooling medium outlet pipe 412 is connected to the inlet of the heater. The cooling medium coming out of the water outlet of the distributor 230 enters the heater through the cooling medium outlet pipe 412.

[0072] The thermostat 430 includes a first inlet, a second inlet, and a thermostat outlet. The thermostat outlet of the thermostat 430 communicates with each of the first inlet and the second inlet of the thermostat 430. The first inlet of the thermostat 430 is connected to the outlet of the heater. The second inlet of the thermostat 430 can be connected to a heat dissipation device outside the fuel cell engine 1000. When the fuel cell engine 1000 starts to operate for the first time, it is necessary to increase the temperature of the fuel cell 200. At this time, the heater operates to increase the temperature of the cooling medium, so that the fuel cell 200 operates at an appropriate temperature. After the fuel cell 200 operates for a period of time, the fuel cell 200 does not need to be heated and needs to be cooled. At this time, the heater stops operating, and the heat dissipation device outside the fuel cell engine 1000 cools the cooling medium by connecting to the second inlet of the thermostat 430, thereby reducing the temperature of the fuel cell 200, so that the fuel cell 200 operates at an appropriate temperature. The heat dissipation device outside the fuel cell engine 1000 and the heater jointly control the temperature of the cooling circulating water.

[0073] The second inlet of the thermostat 430 can be connected to a heat dissipation device outside the fuel cell engine 1000 means that when the fuel cell 200 needs to be cooled, the second inlet of the thermostat 430 is connected to the heat dissipation device outside the fuel cell engine 1000, and the heat dissipation device cools the cooling medium in the thermostat 430, thereby reducing the temperature of the fuel cell 200, so that the fuel cell 200 operates at an appropriate temperature. When the fuel cell 200 does not need to be cooled, the second inlet of the thermostat 430 can be connected to the heat dissipation device outside the fuel cell engine 1000 or can be not connected to the heat dissipation device outside the fuel cell engine 1000. The inlet of the cooling circulating water pump 420 is connected to the thermostat outlet of the thermostat 430. The first end of the cooling medium inlet pipe 411 is connected to the outlet of the cooling circulating water pump 420. The second end of the cooling medium inlet pipe 411 passes through the first side surface 211 of the first end cover 210 so as to be connected to the water inlet of the distributor 230. The cooling medium entering the cooling circulating water pump 420 from the thermostat 430 enters the water inlet of the distributor 230 through the cooling medium inlet pipe 411, and then enters the cooling chamber of the fuel cell 200.

[0074] The cooling circulating water pump 420, the thermostat 430, and the heater are electrically connected to the power distribution device 600, and the power distribution device 600 supplies power to the cooling circulating water pump 42011, the thermostat 4309, and the heater.

[0075] Optionally, the cooling circulating water pump 420 is located in front of the thermostat 430 and the heater, and the thermostat 430 is located to the left of the heater.

[0076] In some embodiments, the cooling circulation system is located below the hydrogen supply system, which is convenient for the installation of the cooling circulation system and the hydrogen supply system.

[0077] As Figure 5 shown, in some embodiments, the air supply system is installed on the third side fixing plate 130, that is, the air supply system is located below the fuel cell 200.

[0078] The air supply system includes an air humidifier 520, a throttle valve 530, and a second pipeline assembly. The second pipeline assembly includes a fourth pipeline and a fifth pipeline. The air humidifier 520 includes a first cavity and a second cavity. The first cavity cooperates with the second cavity so that the air in the first cavity can exchange heat with the air in the second cavity.

[0079] The first inlet of the first cavity communicates with the atmosphere. The first end of the fourth pipeline is connected to the first outlet of the first cavity. The second end of the fourth pipeline passes through the third side surface 213 of the first end cover 210 so as to be connected to the air inlet of the distributor 230. Therefore, after the air entering the first cavity of the air humidifier 520 is humidified, it enters the air inlet of the distributor 230 through the fourth pipeline, and then enters the air cavity of the fuel cell 200.

[0080] The first end of the fifth pipeline is connected to the second inlet of the second cavity. The second end of the fifth pipeline passes through the third side surface 213 of the first end cover 210 so as to be connected to the air outlet of the distributor 230. Therefore, the air coming out from the air outlet of the distributor 230 enters the second cavity of the air humidifier 520 through the fifth pipeline. The air coming out from the air outlet of the distributor 230 has a higher temperature. The first cavity cooperates with the second cavity so that the air in the first cavity can exchange heat with the air in the second cavity, thereby enabling the temperature of the air in the first cavity to be increased, so that the temperature of the air entering the fuel cell 200 meets the requirements.

[0081] The inlet of the throttle valve 530 is connected to the second outlet of the second cavity of the air humidifier 520, and the outlet of the throttle valve 530 communicates with the atmosphere. After the air in the second cavity of the air humidifier 520 enters the throttle valve 530, it is discharged into the atmosphere.

[0082] The air humidifier 520 and the throttle valve 530 are electrically connected to the power distribution device 600. The power distribution device 600 supplies power to the air humidifier 520 and the throttle valve 530.

[0083] Optionally, the air humidifier 520 is located behind the throttle valve 530.

[0084] In some embodiments, the fuel cell 200 is bolted in the installation space, the hydrogen supply system is bolted to the first side fixing plate 110, the air supply system is bolted to the third side fixing plate 130, the cooling circulation system is bolted to the first side fixing plate 110, and the power distribution device 600 is installed on the second side fixing plate 120. Thus, the installation and disassembly of the fuel cell 200, the hydrogen supply system, the cooling circulation system, the air supply system, and the power distribution device 600 can be facilitated.

[0085] The power distribution device 600 is installed on the second side fixing plate 120. The power distribution device 600 is electrically connected to the fuel cell 200 and supplies power to the hydrogen supply system, the cooling circulation system, and the air supply system to ensure the normal operation of the fuel cell engine 1000.

[0086] In some embodiments, the lower end of the first side fixing plate 110 is located below the third side fixing plate 130, increasing the installation space of the first side fixing plate 110 and ensuring that the entire cooling circulation system can be installed on the first side fixing plate 110.

[0087] In some embodiments, the water outlet of the dispenser 230 is located at the lower end of the sixth side surface 232 of the dispenser 230, making the pipeline connected to the water outlet of the dispenser 230 closer to the lower part, thereby making the integration degree of the fuel cell engine 1000 higher.

[0088] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation 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 thus cannot be construed as a limitation of the present invention.

[0089] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0090] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0091] In the present invention, unless otherwise clearly defined or limited, a first feature being "on" or "under" a second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. A first feature being "under", "below" and "beneath" a second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0092] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0093] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A fuel cell engine, characterized in that, Comprising: A fixed frame, the fixed frame includes a first side fixing plate, a second side fixing plate, a third side fixing plate and a fourth side fixing plate. The first side fixing plate, the second side fixing plate, the third side fixing plate and the fourth side fixing plate are connected and define an installation space. Wherein the first side fixing plate and the second side fixing plate are opposite to each other along a first direction, and the third side fixing plate and the fourth side fixing plate are opposite to each other along a second direction; A fuel cell, the fuel cell is installed in the installation space. The fuel cell includes a housing, a stack, a distributor, and a first end cover and a second end cover opposite to each other in a third direction. The first end cover and the second end cover are provided at both ends of the housing. An installation cavity is defined between the first end cover, the second end cover and the housing. The stack is provided in the installation cavity. The distributor is provided between the stack and the first end cover. The first end cover has a first side face and a second side face opposite to each other in the first direction. The first end cover has a third side face and a fourth side face opposite to each other in the second direction. The distributor has a fifth side face and a sixth side face opposite to each other in the first direction. Wherein the first direction, the second direction and the third direction are perpendicular to each other; A hydrogen supply system, the hydrogen supply system is installed on the first side fixing plate, and a first pipeline assembly of the hydrogen supply system is connected to the fifth side face of the distributor; A cooling circulation system, the cooling circulation system is installed on the first side fixing plate. A cooling medium inlet pipe of the cooling circulation system passes through the first side face of the first end cover so as to be connected to the distributor, and a cooling medium outlet pipe of the cooling circulation system is connected to the sixth side face of the distributor; An air supply system, the air supply system is installed on the third side fixing plate, and a second pipeline assembly of the air supply system passes through the third side face of the first end cover so as to be connected to the distributor; And A power distribution device, the power distribution device is installed on the second side fixing plate, and the power distribution device is electrically connected to the fuel cell; The cooling circulation system includes: The cooling medium outlet pipe, a first end of the cooling medium outlet pipe is connected to a water outlet of the sixth side face of the distributor; A heater, a second end of the cooling medium outlet pipe is connected to an inlet of the heater; A thermostat, the thermostat includes a first inlet, a second inlet and a thermostat outlet. The thermostat outlet of the thermostat is communicated with each of the first inlet and the second inlet of the thermostat. Wherein the first inlet of the thermostat is connected to an outlet of the heater, and the second inlet of the thermostat can be connected to an external heat dissipation device; A cooling circulation water pump, an inlet of the cooling circulation water pump is connected to the thermostat outlet; and The cooling medium inlet pipe, a first end of the cooling medium inlet pipe is connected to an outlet of the cooling circulation water pump, and a second end of the cooling medium inlet pipe passes through the first side face of the first end cover so as to be connected to a water inlet of the distributor; The cooling circulation water pump, the thermostat and the heater are electrically connected to the power distribution device; The cooling circulation water pump is located in front of the thermostat and the heater, and the thermostat is located to the left of the heater; The lower end of the first side fixing plate is located below the third side fixing plate; The water outlet of the dispenser is located at the lower end of the sixth side surface of the dispenser.

2. The fuel cell engine according to claim 1, characterized in that, The first side fixing plate, the second side fixing plate, the third side fixing plate and the fourth side fixing plate are connected in sequence. The first direction is the left-right direction, the second direction is the up-down direction, and the third direction is the front-back direction. Among them, the first side fixing plate is located on the left side of the second side fixing plate, the third side fixing plate is located below the fourth side fixing plate, and the first side surface and the fifth side surface are on the same side of the fuel cell stack.

3. The fuel cell engine according to claim 2, characterized in that, The hydrogen supply system includes: The first pipeline assembly, which includes a first pipeline, a second pipeline and a third pipeline; A hydrogen injector, the first end of the first pipeline is connected to the outlet of the hydrogen injector, and the second end of the first pipeline is connected to the hydrogen inlet on the fifth side surface of the dispenser; A steam-water separator, the first end of the third pipeline is connected to the inlet of the steam-water separator, and the second end of the third pipeline is connected to the hydrogen outlet on the fifth side surface of the dispenser; A hydrogen circulation pump, the gas outlet of the steam-water separator is connected to the inlet of the hydrogen circulation pump, the first end of the second pipeline is connected to the outlet of the hydrogen circulation pump, and the second end of the second pipeline is connected to the hydrogen inlet on the fifth side surface of the dispenser; and A steam trap, the water outlet of the steam-water separator is connected to the inlet of the steam trap; The hydrogen circulation pump and the steam trap are electrically connected to the power distribution device.

4. The fuel cell engine according to claim 3, characterized in that, The hydrogen circulation pump is located behind the hydrogen injector, the steam-water separator and the steam trap, the hydrogen injector is located above the steam-water separator, and the steam trap is located below the steam-water separator.

5. The fuel cell engine according to claim 2, characterized in that, The cooling circulation system is located below the hydrogen supply system.

6. The fuel cell engine according to claim 2, wherein The air supply system includes: The second pipeline assembly, which includes a fourth pipeline and a fifth pipeline; An air humidifier, the air humidifier includes a first cavity and a second cavity, the first cavity cooperates with the second cavity so that the air in the first cavity can exchange heat with the air in the second cavity. The first cavity has a first inlet and a second outlet, and the second cavity has a second inlet and a second outlet. Among them, the first end of the fourth pipeline is connected to the second outlet of the first cavity, the second end of the fourth pipeline passes through the third side surface of the first end cover so as to be connected to the air inlet of the dispenser, the first end of the fifth pipeline is connected to the second inlet of the second cavity, and the second end of the fifth pipeline passes through the third side surface of the first end cover so as to be connected to the air outlet of the dispenser; and A throttle valve, the inlet of the throttle valve is connected to the second outlet of the second cavity; The air humidifier and the throttle valve are electrically connected to the power distribution device; The air humidifier is located behind the throttle valve.

7. The fuel cell engine according to claim 2, wherein The fuel cell is mounted in the installation space by bolts, the hydrogen supply system is mounted on the first side fixing plate by bolts, the air supply system is mounted on the third side fixing plate by bolts, the cooling circulation system is mounted on the first side fixing plate by bolts, and the power distribution device is mounted on the second side fixing plate.

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