Fuel cell device, engine assembly and vehicle

Abstract

The utility model relates to a fuel cell device, an engine assembly and a vehicle. The fuel cell device comprises an electric pile, an air compressor and an intercooler, a first air inlet is formed in the surface of one side of the electric pile in the first horizontal direction; the air compressor is arranged on the lower side of the electric pile and used for compressing air. The intercooler is provided with a second air inlet and a second air outlet, the second air inlet is communicated with the outlet of the air compressor, and the second air outlet is communicated with the first air inlet. And air exhausted by the air compressor is cooled by the intercooler and then enters the electric pile. The intercooler is located on one side of the electric pile in the first horizontal direction and located at the first air inlet. The utility model is used for providing power for the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and in particular to a fuel cell device, an engine assembly and a vehicle. Background Art

[0002] A hydrogen fuel cell system is a device that converts chemical energy into electrical energy through the reaction of hydrogen and oxygen. A hydrogen fuel cell system generally includes a fuel cell stack, an air compressor and an intercooler. The air compressor, the intercooler and the fuel cell stack are connected in sequence. The air is compressed in the air compressor, and the compressed air enters the intercooler to be cooled. The cooled air enters the fuel cell stack to react chemically with hydrogen.

[0003] In the related art, the intercooler is usually arranged below the fuel cell stack and the air compressor, and the air compressor, the intercooler and the fuel cell stack are connected in sequence through pipelines.

[0004] However, this will cause the hydrogen fuel cell system to occupy too much space in the vertical direction, and the integration of the hydrogen fuel cell system will be low, which will affect the assembly effect of the hydrogen fuel cell system on the vehicle and increase the difficulty of assembly. Utility Model Content

[0005] The present application provides a fuel cell device, an engine assembly and a vehicle to improve the integration of the fuel cell device. The technical solution adopted by the utility model is as follows:

[0006] According to the first aspect involved in the present application, a fuel cell device is provided, including a fuel cell stack, an air compressor and an intercooler. A first air inlet is provided on a surface of one side of the fuel cell stack in the first horizontal direction. The air compressor is arranged at the lower side of the fuel cell stack for compressing air. The intercooler has a second air inlet and a second air outlet, the second air inlet is connected to the outlet of the air compressor, and the second air outlet is connected to the first air inlet. The air exhausted by the air compressor is cooled by the intercooler and then enters the fuel cell stack. The intercooler is located on one side of the fuel cell stack in the first horizontal direction and at the first air inlet.

[0007] According to the above technical means, since the intercooler is located on one side of the fuel cell stack in the first horizontal direction, compared with the intercooler being arranged below the fuel cell stack, the intercooler being located on one side of the fuel cell stack in the first horizontal direction can save the space occupied by the fuel cell device in the vertical direction, and since the intercooler is located at the first air inlet, the integration of the fuel cell device can be improved.

[0008] In this way, through the setting of the intercooler, the spatial setting of the fuel cell device can be made more reasonable. When the fuel cell device is installed in the engine compartment of the vehicle's engine assembly, the fuel cell device can be installed on the vehicle more conveniently, and the overall assembly effect of the vehicle can be improved, and the utilization rate of the space in the engine compartment can be improved.

[0009] In a possible implementation, the axis of the first air inlet coincides with the axis of the second air outlet, and / or the first air inlet fits the second air outlet.

[0010] According to the above technical means, since the axis of the first air inlet coincides with the axis of the second air outlet, there is no height difference between the second air outlet and the first air inlet in the vertical direction. Therefore, there is no need to set a pipe in the vertical direction to connect the second air outlet and the first air inlet, which facilitates the installation of the fuel cell device.

[0011] By fitting the first air inlet with the second air outlet, there is no gap between the first air inlet and the second air outlet along the first horizontal direction, and the first air inlet and the second air outlet can be directly connected, which can also facilitate the installation of the fuel cell device.

[0012] In this way, by making the axis of the first air inlet coincide with the axis of the second air outlet, and the first air inlet and the second air outlet fit together, the second air outlet and the first air inlet can be directly connected, and the air in the intercooler can enter the fuel cell stack directly through the first air inlet from the second air outlet. In this way, the intercooler can be more closely arranged at the first air inlet, so as to further improve the integration of the fuel cell device.

[0013] In a possible embodiment, the fuel cell device further includes a support plate, the thickness direction of the support plate is consistent with the vertical direction, and the stack is located above the support plate and connected to the support plate. A first connection portion and a second connection portion are formed on the support plate, and the first connection portion and the second connection portion are both used to connect to the cabin of the engine assembly. Along the second horizontal direction, the first connection portion is located on one side of the stack, and the second connection portion is located on the other side of the stack.

[0014] According to the above technical means, since the first connection part and the second connection part are both connected to the cabin of the engine assembly, and since the first connection part and the second connection part are located on two opposite sides of the battery stack in the second horizontal direction, the support plate can be connected to the cabin through the first connection part and the second connection part. In this way, the support plate can support the battery stack, thereby installing the battery stack in the cabin.

[0015] In a possible implementation, the first connection portion and the second connection portion are located on one side of the stack in a third horizontal direction, and the third horizontal direction is perpendicular to the second horizontal direction. The support plate also has a third connection portion at one end away from the first connection portion in the third horizontal direction. The fuel cell device also includes a bracket, one end of the bracket is connected to the bottom wall of the cabin, and the other end of the bracket is connected to the third connection portion.

[0016] According to the above technical means, since the third horizontal direction is perpendicular to the second horizontal direction, the third connecting portion is located at one end of the support plate in the third horizontal direction away from the first connecting portion, and since one end of the bracket is connected to the bottom wall of the cabin and the other end of the bracket is connected to the third connecting portion, the bracket can support the support plate through the third connecting portion.

[0017] In this way, the first connection part and the second connection part can support the two sides of the support plate in the second horizontal direction, and the first connection part and the third connection part can support the two sides of the support plate in the third horizontal direction, so that the support plate can be more stably connected in the cabin, so that the support plate can more stably support the battery stack, thereby ensuring the normal function of the battery stack.

[0018] In a possible implementation, the second horizontal direction is consistent with the first horizontal direction. And / or, a side surface of the support plate in the third horizontal direction is the first surface, and a projection of the third connecting portion on the first surface is located between a projection of the first connecting portion on the first surface and a projection of the second connecting portion on the first surface.

[0019] According to the above technical means, an acute-angled triangle support structure can be formed between the first connection part and the second connection part, between the second connection part and the third connection part, and between the first connection part and the third connection part, and the first connection part, the second connection part and the third connection part are respectively the three vertices of the acute-angled triangle support structure.

[0020] In this way, when any position on the support plate is subjected to pressure, the distance between this position and at least one of the first connection part, the second connection part and the third connection part is smaller, thereby improving the supporting effect of the first connection part, the second connection part and the third connection part on the support plate, so that the support plate can support the battery stack more stably.

[0021] In a possible implementation, the intercooler includes a body and an air outlet pipe, one end of the air outlet pipe is connected to the body, and the port at the other end of the air outlet pipe forms a second air outlet. The fuel cell device also includes a sealing ring, which is sleeved on the air outlet pipe and is sealed with a surface of the stack on one side close to the second air outlet.

[0022] According to the above technical means, since the sealing ring is sleeved on the air outlet pipe and is sealed with the surface of the side of the battery stack close to the second air outlet, the sealing ring can seal the gap between the air outlet pipe and the surface of the side of the battery stack close to the second air outlet, that is, the gap between the second air inlet on the air outlet pipe and the first air inlet on the surface of the side of the battery stack close to the second air outlet.

[0023] In this way, during the operation of the fuel cell device, all the air in the intercooler can enter the fuel cell stack through the second air outlet and the first air inlet, thereby preventing air leakage and ensuring the working efficiency of the fuel cell device.

[0024] In a possible embodiment, the fuel cell device also includes a transformer assembly, which includes a shell and a transformer. A accommodating cavity with an opening on one side is formed in the shell. The transformer is located in the accommodating cavity and connected to the shell. The fuel cell stack is arranged at the opening of the accommodating cavity and blocks the opening of the accommodating cavity.

[0025] And / or, the fuel cell device further includes an air filter, which is arranged on a side of the stack away from the intercooler and connected to the stack. The outlet of the air filter is connected to the inlet of the air compressor, and the air filter is used to communicate with the outside.

[0026] And / or, the stack further includes a third air inlet. The fuel cell device further includes a hydrogen inlet valve and an ejector, the inlet of the hydrogen inlet valve is used to connect to the hydrogen supply device, the outlet of the hydrogen inlet valve is connected to the inlet of the ejector, and the outlet of the ejector is connected to the third air inlet.

[0027] Through the above arrangement, the side surface of the stack close to the transformer can seal the opening of the accommodating cavity, thereby encapsulating the transformer in the shell and realizing the installation of the transformer. In this way, the installation of the transformer assembly can be realized without separately setting a plate body for the accommodating cavity opening, which can further reduce the space occupied by the fuel cell device in the vertical direction, thereby further improving the integration of the fuel cell device.

[0028] According to the above technical means, in the process of air entering the fuel cell device, the air will first enter the air filter and be filtered by the air filter. The pure air after filtering and removing impurities will be compressed in the air compressor and finally enter the fuel cell stack through the intercooler.

[0029] At the same time, impurities in the air will be filtered by the air filter and cannot enter the air compressor, intercooler and fuel cell stack, thus ensuring the cleanliness of the inside of the fuel cell device to ensure the normal function of the fuel cell device.

[0030] Moreover, during the operation of the fuel cell stack, the hydrogen inlet valve and the ejector can be opened to allow hydrogen to enter the fuel cell stack from the hydrogen supply equipment, thereby reacting with the compressed and cooled air in the fuel cell stack, thereby converting the chemical energy of hydrogen and oxygen in the air into electrical energy for use by the vehicle.

[0031] In one possible embodiment, the fuel cell device is a self-humidifying fuel cell.

[0032] According to the above technical means, the self-humidifying fuel cell can maintain the internal humidity of the fuel cell stack by adjusting the water content by itself. In this way, there is no need to add a humidifier between the intercooler and the fuel cell stack, so that the internal humidity of the fuel cell stack can be kept at a suitable level, which can save the space occupied by the fuel cell device and further improve the integration of the fuel cell device.

[0033] According to a second aspect of the present application, an engine assembly is provided, comprising the above-mentioned fuel cell device.

[0034] According to a third aspect of the present application, a vehicle is provided, comprising the above-mentioned engine assembly.

[0035] Therefore, the above technical features of the present application have the following beneficial effects:

[0036] (1) The present application can make the spatial arrangement of the fuel cell device more reasonable by setting an intercooler. When the fuel cell device is installed in the engine compartment of the vehicle's engine assembly, the fuel cell device can be installed on the vehicle more conveniently, thereby improving the overall assembly effect of the vehicle and improving the utilization rate of the space in the engine compartment.

[0037] (2) The present application provides a first air inlet and a second air outlet so that the air in the intercooler can enter the fuel cell stack directly through the first air inlet from the second air outlet. This allows the intercooler to be more closely arranged at the first air inlet, thereby further improving the integration of the fuel cell device.

[0038] (3) The present application provides a support plate and provides a first connection portion and a second connection portion so that the support plate can support the fuel cell stack, thereby installing the fuel cell stack in the cabin.

[0039] (4) The present application provides a bracket and cooperates with the bracket and the support plate to prevent one side of the support plate from being overturned due to excessive force, so that the support plate can support the battery stack more stably, thereby ensuring the normal function of the battery stack.

[0040] (5) The present application can improve the supporting effect of the first connecting part, the second connecting part and the third connecting part on the support plate by setting the support plate and the bracket, so that the support plate can support the battery stack more stably.

[0041] (6) The present application provides a sealing ring so that, during the operation of the fuel cell device, all the air in the intercooler can enter the fuel cell stack through the second air outlet and the first air inlet, thereby preventing air leakage and ensuring the operating efficiency of the fuel cell device.

[0042] (7) The present application can further reduce the space occupied by the fuel cell device in the vertical direction by setting the transformer assembly, thereby further improving the integration of the fuel cell device. At the same time, by setting the air filter, the cleaning effect inside the fuel cell device can be ensured to ensure the normal function of the fuel cell device. And by setting the hydrogen inlet valve and the ejector, hydrogen is provided to the stack.

[0043] (8) By adopting a self-humidifying fuel cell, the present application can save the space occupied by the fuel cell device, thereby further improving the integration of the fuel cell device.

[0044] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0046] Figure 1 is a schematic diagram of an external structure of a fuel cell device according to an exemplary embodiment;

[0047] Figure 2 is another schematic diagram of the external structure of a fuel cell device according to an exemplary embodiment;

[0048] Figure 3 is another external structural schematic diagram of a fuel cell device according to an exemplary embodiment;

[0049] Figure 4 is a schematic diagram of the external structure of a support plate according to an exemplary embodiment.

[0050] Among them, 01-fuel cell device; 1-fuel cell stack; 2-air compressor; 3-intercooler; 4-hydrogen inlet valve; 5-ejector; 6-support plate; 61-first connecting part; 611-first connecting plate; 62-second connecting part; 621-second connecting plate; 63-third connecting part; 7-bracket; 8-transformer assembly; 81-housing; 9-air filter; 10-heat dissipation assembly; 101-heat exchanger; 102-water inlet pipe; 103-water outlet pipe; 104-water pump; 105-three-way valve; 106-deionizer; X-first horizontal direction; Y-second horizontal direction; Z-third horizontal direction. DETAILED DESCRIPTION

[0051] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0053] With the progress of society and the development of the vehicle industry, the demand for vehicles is increasing, and the exhaust gas generated by vehicles is also polluting the environment. The hydrogen fuel cell system is a clean and pollution-free energy device that can directly convert the chemical energy in hydrogen and oxygen into electrical energy through electrochemical reactions. The product after the reaction is water, which does not contain other pollutants such as carbon dioxide, so it will not pollute the environment. The application of hydrogen fuel cell systems in automobiles is becoming more and more extensive.

[0054] A hydrogen fuel cell system generally includes a fuel cell stack, an air compressor and an intercooler, and the air compressor, the intercooler and the fuel cell stack are connected in sequence.

[0055] The air is compressed in the air compressor into compressed air with a pressure that can meet the working requirements of the fuel cell stack. The compressed air enters the intercooler, which includes multiple gas channels and coolant channels. The coolant in the coolant channel will exchange heat with the compressed air in the gas channel, thereby reducing the temperature of the compressed air and ensuring that the fuel cell stack can work normally. The cooled air enters the fuel cell stack and reacts chemically with hydrogen.

[0056] In the related art, the intercooler is usually arranged below the fuel cell stack and the air compressor, and the air compressor, the intercooler and the fuel cell stack are connected in sequence through pipelines.

[0057] However, this will cause the fuel cell system to occupy too much space in the vertical direction, and the integration of the fuel cell system will be low, which will affect the assembly effect of the fuel cell system on the vehicle and increase the difficulty of assembly.

[0058] Based on this, the present application provides a vehicle, which includes a vehicle body and an engine assembly. A cabin is formed on the vehicle body, and the engine assembly is installed in the cabin to provide power for the vehicle.

[0059] Specifically, Figure 1As shown, the engine assembly includes an electric motor and a fuel cell device 01. The fuel cell device 01 is used to generate electrical energy and transmit the electrical energy to the electric motor. The electric motor can convert the electrical energy into mechanical energy to make the vehicle run.

[0060] The raw material of the fuel cell device 01 may be hydrogen, methanol, methane, acetylene, etc. In the following description, the fuel cell device 01 using hydrogen as the raw material is used for explanation.

[0061] like Figure 1 As shown, the fuel cell device 01 includes a fuel cell stack 1, an air compressor 2, and an intercooler 3. The fuel cell stack 1 is arranged in a first horizontal direction ( Figure 1 A first air inlet is provided on one side surface (in the X direction shown in FIG). The air compressor 2 is provided at the lower side of the fuel cell stack 1 for compressing air. The intercooler 3 has a second air inlet and a second air outlet, the second air inlet is connected to the outlet of the air compressor 2, and the second air outlet is connected to the first air inlet. The air discharged from the air compressor 2 is cooled by the intercooler 3 and then enters the fuel cell stack 1.

[0062] Specifically, Figure 1 As shown, the stack 1 also includes a third air inlet. The fuel cell device 01 also includes a hydrogen inlet valve 4 and an ejector 5, the inlet of the hydrogen inlet valve 4 is used to connect to the hydrogen supply device, the outlet of the hydrogen inlet valve 4 is connected to the inlet of the ejector 5, and the outlet of the ejector 5 is connected to the third air inlet.

[0063] Illustratively, the hydrogen inlet valve 4 may be a stop valve, a ball valve, or the like.

[0064] In some examples, the hydrogen supply device is a hydrogen storage tank storing hydrogen gas.

[0065] In this way, during the operation of the fuel cell stack 1, the hydrogen inlet valve 4 and the ejector 5 can be opened to allow hydrogen to enter the fuel cell stack 1 from the hydrogen supply device, thereby reacting with the air in the fuel cell stack 1, thereby converting the chemical energy released during the reaction of hydrogen with oxygen in the air into electrical energy for use by the vehicle.

[0066] In some examples, the fuel cell stack 1 also includes a hydrogen-water separator, which is disposed outside the fuel cell stack 1. The inlet of the hydrogen-water separator is connected to the outlet of the fuel cell stack 1. The hydrogen-water mixture discharged from the fuel cell stack 1 enters the hydrogen-water separator through the outlet of the fuel cell stack 1 and is then separated by the hydrogen-water separator. The separated hydrogen flows through the hydrogen return channel to between the hydrogen inlet valve 4 and the ejector 5, and the separated water is discharged from the fuel cell device 01 through a pipeline.

[0067] In this way, the separated hydrogen can re-enter the fuel cell stack 1 through the ejector 5, so that the hydrogen can react more fully in the fuel cell stack 1, thereby improving the utilization rate of the hydrogen.

[0068] In some examples, the fuel cell device 01 further includes a bypass pipe and a bypass valve, the intercooler 3 is provided with a third air outlet, the air inlet of the bypass pipe is connected to the third air outlet, and the air outlet of the bypass pipe is connected to the outside of the fuel cell device 01. The bypass valve is arranged in the bypass pipe to control the on-off of the bypass pipe. When the bypass valve is opened, the air in the intercooler 3 can be partially discharged to the outside of the fuel cell device 01 through the bypass pipe. In this way, the on-off of the bypass valve can be controlled to control the amount of air in the intercooler 3 entering the fuel cell stack 1 from the second air outlet, thereby controlling the output power of the fuel cell stack 1.

[0069] like Figure 1 As shown, the intercooler 3 is located on one side of the fuel cell stack 1 in the first horizontal direction and at the first air inlet.

[0070] Through the above-mentioned arrangement, since the intercooler 3 is located on one side of the fuel cell stack 1 in the first horizontal direction, compared with the intercooler 3 being arranged below the fuel cell stack 1, the intercooler 3 being located on one side of the fuel cell stack 1 in the first horizontal direction can save the space occupied by the fuel cell device 01 in the vertical direction, and since the intercooler 3 is located at the first air inlet, the integration of the fuel cell device 01 can be improved.

[0071] In this way, through the setting of the intercooler 3, the spatial setting of the fuel cell device 01 can be made more reasonable. When the fuel cell device 01 is installed in the engine compartment of the vehicle's engine assembly, the fuel cell device 01 can be installed on the vehicle more conveniently, and the overall assembly effect of the vehicle can be improved, and the utilization rate of the space in the engine compartment can be improved.

[0072] Exemplarily, the second air outlet of the intercooler 3 and the first air inlet of the fuel cell stack 1 may be connected via a pipe, and both ends of the pipe are connected to the second air outlet and the first air inlet, respectively.

[0073] For example, the axis of the first air inlet coincides with the axis of the second air outlet. Through the above arrangement, since the axis of the first air inlet coincides with the axis of the second air outlet, there is no height difference between the second air outlet and the first air inlet in the vertical direction, so in the vertical direction, there is no need to set a pipeline to connect the second air outlet and the first air inlet, which can facilitate the arrangement of the fuel cell device 01.

[0074] Exemplarily, the first air inlet is fitted with the second air outlet.

[0075] By making the first air inlet fit with the second air outlet, there is no gap between the first air inlet and the second air outlet along the first horizontal direction, the first air inlet and the second air outlet can be directly connected, and the air in the intercooler 3 can enter the fuel cell stack 1 directly through the first air inlet from the second air outlet. In this way, the intercooler 3 can be more closely arranged at the first air inlet, so as to further improve the integration of the fuel cell device 01.

[0076] On this basis, in order to ensure that all the air of the intercooler 3 can enter the fuel cell stack 1 from the first air inlet, in some embodiments, the intercooler 3 includes a body and an air outlet pipe, one end of the air outlet pipe is connected to the body, and the port at the other end of the air outlet pipe forms a second air outlet. The fuel cell device 01 also includes a sealing ring, which is sleeved on the air outlet pipe and is sealed with a surface of the fuel cell stack 1 on one side close to the second air outlet.

[0077] It should be noted that the shape of the main body can be a cylinder, a cube, etc., the outlet pipe is connected to the outer wall of the main body, and the size of the outlet pipe is relatively small along the axial direction of the outlet pipe. In this way, the connection between the intercooler 3 and the fuel cell stack 1 can be facilitated by setting the outlet pipe, and the size of the outlet pipe is set relatively small, which can facilitate the improvement of the integration of the fuel cell device 01.

[0078] Exemplarily, the gas outlet pipe can be connected to the fuel cell stack 1 by screwing, welding or clamping. Taking the screw connection of the gas outlet pipe and the fuel cell stack 1 as an example, a thread is formed at one end of the gas outlet pipe close to the fuel cell stack 1, and the thread is located on the outer wall surface of the gas outlet pipe. The end of the gas outlet pipe close to the fuel cell stack 1 extends into the first air inlet and is screwed to the first air inlet.

[0079] Exemplarily, the sealing ring may be a rubber ring, a silicone ring, or the like.

[0080] Through the above arrangement, since the sealing ring is sleeved on the air outlet pipe and is sealed with the side surface of the battery stack 1 close to the second air outlet, the sealing ring can seal the gap between the air outlet pipe and the side surface of the battery stack 1 close to the second air outlet, that is, the gap between the second air inlet on the air outlet pipe and the first air inlet on the battery stack 1.

[0081] In this way, during the operation of the fuel cell device 01 , the sealing ring can prevent air leakage, so that all the air in the intercooler 3 can enter the fuel cell stack 1 through the second air outlet and the first air inlet, so as to ensure the working efficiency of the fuel cell device 01 .

[0082] In some embodiments, Figure 1 , Figure 2As shown, the fuel cell device 01 further includes a support plate 6, the thickness direction of the support plate 6 is consistent with the vertical direction, and the fuel cell stack 1 is located above the support plate 6 and connected to the support plate 6. Specifically, the fuel cell stack 1 and the support plate 6 are screwed together.

[0083] The support plate 6 includes a first connection portion 61 and a second connection portion 62, both of which are used to connect to the engine compartment of the engine assembly. Figure 1 The first connection portion 61 is located on one side of the fuel cell stack 1 , and the second connection portion 62 is located on the other side of the fuel cell stack 1 .

[0084] Exemplarily, the second horizontal direction may be perpendicular to the first horizontal direction.

[0085] For example, Figure 1 As shown, the second horizontal direction may be consistent with the first horizontal direction, so as to facilitate the spatial arrangement of the fuel cell device 01 .

[0086] In some examples, the support plate 6 includes a first connecting plate 611, a second connecting plate and a mounting plate. The first connecting plate 611 forms a first connecting portion 61 and is screwed to the cabin, and the second connecting plate forms a second connecting portion 62 and is screwed to the cabin. The mounting plate is connected between the first connecting plate 611 and the second connecting plate, and the battery stack is screwed to the mounting plate.

[0087] The first connecting plate 611 and the mounting plate may be an integral structure or a separate structure. The second connecting plate and the mounting plate may be an integral structure or a separate structure.

[0088] Through the above arrangement, since the first connection part 61 and the second connection part 62 are both connected to the cabin of the engine assembly, and since the first connection part 61 and the second connection part 62 are located on two opposite sides of the fuel cell stack 1 in the second horizontal direction, the support plate 6 can be connected in the cabin through the first connection part 61 and the second connection part 62, so that the support plate 6 can support the fuel cell stack 1, thereby installing the fuel cell stack 1 in the cabin.

[0089] At the same time, since the first connecting portion 61 and the second connecting portion 62 are located on both sides of the support plate 6 in the second horizontal direction, the middle part of the support plate 6 has no support, and thus the middle part of the support plate 6 can undergo a certain deformation. In this way, when the support plate 6 is vibrated by external force, the support plate 6 can undergo a certain deformation to buffer the battery stack 1, thereby reducing the impact of the vibration of the support plate 6 on the battery stack 1 and reducing the noise generated by the vibration.

[0090] For example, along the third horizontal direction ( Figure 2The first connecting portion 61 and the second connecting portion 62 may be disposed at a middle position of the support plate 6. The third horizontal direction is perpendicular to the second horizontal direction.

[0091] Exemplarily, along the third horizontal direction, the first connection portion 61 and the second connection portion 62 may be disposed on two opposite sides of the fuel cell stack 1 .

[0092] In some embodiments, Figure 2 , Figure 3 As shown, the first connection portion 61 and the second connection portion 62 are located on one side of the fuel cell stack 1 in the third horizontal direction.

[0093] like Figure 3 , Figure 4 As shown, the support plate 6 has a third connection portion 63 at one end away from the first connection portion 61 in the third horizontal direction. The fuel cell device 01 also includes a bracket 7, one end of which is connected to the bottom wall of the cabin, and the other end of which is connected to the third connection portion 63.

[0094] Exemplarily, the bracket 7 includes a support rod, one end of which is connected to the bottom wall of the cabin, and the other end of which is connected to the third connecting portion. The axis of the support rod can be parallel to the vertical direction or can be inclined relative to the vertical direction.

[0095] Exemplarily, the bracket 7 includes a fixing plate, a thickness direction of the fixing plate is perpendicular to the second horizontal direction, one side wall of the fixing plate is connected to the bottom wall of the cabin, and the other side wall of the fixing plate is connected to the third connecting portion 63 .

[0096] Through the above arrangement, since the third horizontal direction is perpendicular to the second horizontal direction, the third connection portion 63 is located at one end of the support plate 6 in the third horizontal direction away from the first connection portion 61, and since one end of the bracket 7 is connected to the bottom wall of the cabin and the other end of the bracket 7 is connected to the third connection portion 63, the bracket 7 can support the support plate 6 through the third connection portion 63.

[0097] In this way, the first connection part 61 and the second connection part 62 can support the support plate 6 on both sides in the second horizontal direction, and the first connection part 61 and the third connection part 63 can support the support plate 6 on both sides in the third horizontal direction, so that the support plate 6 can be more stably connected in the cabin, so that the support plate 6 can more stably support the battery stack 1 to ensure the normal function of the battery stack 1.

[0098] At the same time, since the first connection part 61 and the second connection part 62 are located on both sides of the support plate 6 in the second horizontal direction, and the first connection part 61 and the third connection part 63 are located on both sides of the support plate 6 in the third horizontal direction, the middle part of the support plate 6 can also undergo a certain deformation. In this way, when the support plate 6 is vibrated by external force, the support plate 6 can buffer the battery stack 1 to reduce the impact of the vibration of the support plate 6 on the battery stack 1 and reduce the noise generated by the vibration.

[0099] For example, along the second horizontal direction, the third connection portion 63 may be located on a side of the first connection portion 61 away from the second connection portion 62. The third connection portion 63 may also be located on a side of the second connection portion 62 away from the first connection portion 61.

[0100] Exemplarily, one side surface of the support plate 6 in the third horizontal direction is the first surface, and the projection of the third connection portion 63 on the first surface is located between the projection of the first connection portion 61 on the first surface and the projection of the second connection portion 62 on the first surface.

[0101] Through the above arrangement, an acute-angled triangle support structure can be formed between the first connection part 61 and the second connection part 62, between the second connection part 62 and the third connection part 63, and between the first connection part 61 and the third connection part 63, and the first connection part 61, the second connection part 62 and the third connection part 63 are respectively the three vertices of the acute-angled triangle support structure.

[0102] In this way, when any position on the support plate 6 is subjected to pressure, the distance between this position and at least one of the first connection part 61, the second connection part 62 and the third connection part 63 is smaller, thereby improving the supporting effect of the first connection part 61, the second connection part 62 and the third connection part 63 on the support plate 6, so that the support plate 6 can support the battery stack 1 more stably.

[0103] In some examples, the third connection portion 63 is formed by a portion of the support plate 6 , one end of the bracket 7 is directly screwed to the support plate 6 , and the other end of the bracket 7 is screwed to the bottom wall of the cabin.

[0104] Since the voltage of the current generated by the battery stack 1 is too low to be normally supplied to the vehicle, a transformer device is generally provided above the battery stack 1 to adjust the voltage of the current generated by the battery stack 1 to a suitable value. Generally, the transformer device and the battery stack 1 are provided separately, and then the transformer device and the battery stack 1 are connected together.

[0105] In some embodiments, Figure 1 , Figure 2As shown, the fuel cell device 01 also includes a transformer assembly 8, which includes a housing 81 and a transformer. Specifically, the transformer is a DC / DC converter. A housing cavity with an opening on one side is formed in the housing 81, the transformer is located in the housing cavity and connected to the housing 81, and the fuel cell stack 1 is arranged at the opening of the housing cavity and blocks the opening of the housing cavity.

[0106] Through the above arrangement, the side surface of the stack 1 close to the transformer can seal the opening of the accommodating cavity, thereby encapsulating the transformer in the shell 81 and realizing the installation of the transformer. In this way, it is not necessary to separately set up a plate body to block the opening of the accommodating cavity, and the installation of the transformer assembly 8 can be realized, which can further reduce the space occupied by the fuel cell device 01 in the vertical direction, thereby further improving the integration of the fuel cell device 01.

[0107] In order to keep the interior of the fuel cell stack 1 at an appropriate humidity, a humidifier is generally added between the intercooler 3 and the fuel cell stack 1, and the moisture in the air in the intercooler 3 is increased by the humidifier to keep the interior of the fuel cell stack 1 at an appropriate humidity. However, the use of a humidifier will increase the volume of the fuel cell device 01, affecting the integration of the fuel cell device 01.

[0108] In some embodiments, the fuel cell device 01 is a self-humidifying fuel cell. The membrane electrode of the stack of the self-humidifying fuel cell is set to a hydrophilic structure, which can store part of the water produced by the reaction of oxygen and hydrogen inside the stack, thereby keeping the inside of the stack 1 at a suitable humidity. In this way, there is no need to add a humidifier between the intercooler 3 and the stack 1, so that the inside of the stack 1 can be kept at a suitable humidity, which can save the space occupied by the fuel cell device 01, so as to further improve the integration of the fuel cell device 01.

[0109] Since the oxygen participating in the reaction in the fuel cell stack 1 exists in the air, and there are impurities such as dust in the air, the impurities will enter the fuel cell stack with the air. After entering the fuel cell stack 1, the impurities will accumulate in the fuel cell stack 1, and eventually affect the normal use of the fuel cell device 01.

[0110] In order to avoid the above problems, in some embodiments, Figure 1 , Figure 2 As shown, the fuel cell device 01 further includes an air filter 9, which is disposed on a side of the stack 1 away from the intercooler 3 and connected to the stack 1. The outlet of the air filter 9 is connected to the inlet of the air compressor 2, and the air filter 9 is used to communicate with the outside.

[0111] Through the above-mentioned arrangement, when air enters the fuel cell device 01, the air will first enter the air filter 9 and be filtered by the air filter 9. The pure air after filtering and removing impurities will be passed into the air compressor 2 for compression, and finally enter the fuel cell stack 1 through the intercooler 3.

[0112] In this way, impurities in the air will be filtered by the air filter 9 to prevent the impurities from entering the air compressor 2, the intercooler 3 and the fuel cell stack 1, thereby ensuring the cleanliness of the inside of the fuel cell device 01 to ensure the normal function of the fuel cell device 01.

[0113] During the operation of the battery stack 1 , a certain amount of heat will be generated inside the battery stack 1 , and the battery stack 1 needs to be cooled to ensure the operating temperature of the battery stack 1 .

[0114] Based on this, Figure 1 , Figure 3 As shown, the fuel cell device 01 also includes a heat dissipation component 10, which is arranged outside the fuel cell stack 1. The heat dissipation component 10 includes a heat exchanger 101, a water inlet pipe 102, a water outlet pipe 103 and a water pump 104. The water inlet end of the water inlet pipe 102 is connected to the water supply equipment, the water outlet end of the water inlet pipe 102 is connected to the water pump 104, the water pump 104 is connected to the heat exchanger 101, and the water pump 104 is used to pass the water provided by the water supply equipment into the heat exchanger 101. The heat exchanger 101 is used to exchange heat with the inside of the fuel cell stack 1, the heat exchanger 101 is connected to the water inlet end of the water outlet pipe 103, and the water outlet end of the water outlet pipe 103 is connected to the outside of the fuel cell device 01.

[0115] Through the above-mentioned arrangement, during the operation of the water pump 104, the water provided by the water supply equipment will enter the water pump 104 through the water inlet pipe 102, and then enter the heat exchanger 101. The heat inside the battery stack 1 can be transferred to the water in the heat exchanger 101 through the heat exchanger 101. The water after absorbing the heat will be discharged to the outside of the fuel cell device 01 through the water outlet pipe 103. Under the action of the water pump 104, water will continuously enter the heat exchanger 101 and take away the heat inside the battery stack 1, thereby continuously dissipating the heat of the battery stack 1 and ensuring the normal operation of the battery stack 1.

[0116] In some examples, the water supply equipment is a cooling system of the vehicle, the water inlet end of the water inlet pipe 102 is connected to the cooling system of the vehicle, and the water outlet end of the water outlet pipe 103 is connected to the cooling system of the vehicle, and water circulates in the cooling system of the vehicle and the heat dissipation component 10 to achieve heat dissipation of the battery stack 1 and the vehicle.

[0117] However, after the vehicle is used for a long time, the ion concentration of water in the heat dissipation component 10 will gradually increase, which will affect the normal operation of the battery stack 1.

[0118] To avoid the above problems, in some examples, such as Figure 1 , Figure 2As shown, the heat dissipation assembly 10 further includes a three-way valve 105 and a deionizer 106. A first water inlet end of the three-way valve 105 is communicated with the heat exchanger 101, a water outlet end of the three-way valve 105 is communicated with the water outlet pipe 103, and a second water inlet end of the three-way valve 105 is communicated with the water outlet end of the deionizer 106. A water inlet end of the deionizer 106 is communicated with the heat exchanger 101. The deionizer 106 is used to remove ions in water.

[0119] Through the above-mentioned arrangement, during the normal heat dissipation of the fuel cell stack 1, the first water inlet and the water outlet of the three-way valve 105 are connected, and the second water inlet is blocked. At this time, the water in the heat exchanger 101 will be discharged to the outside of the fuel cell device 01 through the water outlet pipe 103, thereby achieving heat dissipation of the fuel cell stack 1.

[0120] When the ion concentration in the water is too high, the second water inlet and the water outlet of the three-way valve 105 can be connected, and the first water inlet can be blocked. At this time, the water in the heat exchanger 101 will first flow into the deionizer 106, and the ions in the water in the deionizer 106 will be removed and purified by the deionizer 106. The purified water will flow into the three-way valve 105 through the water outlet of the deionizer 106, and then flow into the water outlet pipe 103, and then be discharged to the outside of the fuel cell device 01.

[0121] In this way, by setting the three-way valve 105 and the deionizer 106, the ions in the water can be removed, so as to avoid the excessive ion concentration in the water from affecting the battery stack 1, thereby ensuring the normal function of the battery stack 1.

[0122] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A fuel cell device (01), characterized in that: include: A fuel cell stack (1), wherein a first air inlet is provided on a surface of one side of the fuel cell stack (1) in a first horizontal direction; An air compressor (2), arranged at the lower side of the fuel cell stack (1), and used for compressing air; The intercooler (3) has a second air inlet and a second air outlet, the second air inlet is connected to the outlet of the air compressor (2), and the second air outlet is connected to the first air inlet; the air discharged from the air compressor (2) is cooled by the intercooler (3) and then enters the fuel cell stack (1); The intercooler (3) is located on one side of the fuel cell stack (1) in the first horizontal direction and is located at the first air inlet.

2. The fuel cell device (01) according to claim 1, characterized in that: The axis of the first air inlet coincides with the axis of the second air outlet; and / or the first air inlet fits the second air outlet.

3. The fuel cell device (01) according to claim 1 or 2, characterized in that: The fuel cell device (01) further comprises a support plate (6), the thickness direction of the support plate (6) being consistent with the vertical direction, and the fuel cell stack (1) being located above the support plate (6) and connected to the support plate (6); A first connection portion (61) and a second connection portion (62) are formed on the support plate (6), and the first connection portion (61) and the second connection portion (62) are both used to connect to the engine compartment of the engine assembly; along the second horizontal direction, the first connection portion (61) is located on one side of the fuel cell stack (1), and the second connection portion (62) is located on the other side of the fuel cell stack (1).

4. The fuel cell device (01) according to claim 3, characterized in that: The first connecting portion (61) and the second connecting portion (62) are located on one side of the battery stack (1) in a third horizontal direction, and the third horizontal direction is perpendicular to the second horizontal direction; The support plate (6) also has a third connection portion (63) at one end away from the first connection portion (61) in the third horizontal direction; the fuel cell device (01) also includes a bracket (7), one end of the bracket (7) is connected to the bottom wall of the cabin, and the other end of the bracket (7) is connected to the third connection portion (63).

5. The fuel cell device (01) according to claim 4, characterized in that: The second horizontal direction is consistent with the first horizontal direction; And / or, a side surface of the support plate (6) in the third horizontal direction is a first surface, and a projection of the third connecting portion (63) on the first surface is located between a projection of the first connecting portion (61) on the first surface and a projection of the second connecting portion (62) on the first surface.

6. The fuel cell device (01) according to claim 1 or 2, characterized in that: The intercooler (3) comprises a body and an air outlet pipe, one end of the air outlet pipe is connected to the body, and a port at the other end of the air outlet pipe forms the second air outlet; The fuel cell device (01) further comprises a sealing ring, which is sleeved on the gas outlet pipe and is in close contact and sealing relationship with a surface of one side of the fuel cell stack (1) close to the second gas outlet.

7. The fuel cell device (01) according to claim 1 or 2, characterized in that: The fuel cell device (01) further comprises a transformer assembly (8), the transformer assembly (8) comprising a housing (81) and a transformer, the housing (81) having a housing cavity with an opening on one side formed therein, the transformer being located in the housing cavity and connected to the housing (81), the fuel cell stack (1) being arranged at the opening of the housing cavity and blocking the opening of the housing cavity; And / or, the fuel cell device (01) further comprises an air filter (9), the air filter (9) being arranged on a side of the fuel cell stack (1) away from the intercooler (3) and connected to the fuel cell stack (1); an outlet of the air filter (9) being connected to an inlet of the air compressor (2), and the air filter (9) being used to communicate with the outside world; And / or, the fuel cell stack (1) further includes a third air inlet; the fuel cell device (01) further includes a hydrogen inlet valve (4) and an ejector (5), the inlet of the hydrogen inlet valve (4) being used to connect to a hydrogen supply device, the outlet of the hydrogen inlet valve (4) being connected to the inlet of the ejector (5), and the outlet of the ejector (5) being connected to the third air inlet.

8. The fuel cell device (01) according to claim 1, characterized in that: The fuel cell device (01) is a self-humidifying fuel cell.

9. An engine assembly, characterized in that: A fuel cell device (01) comprising any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the engine assembly as claimed in claim 9.

Images