Novel fuel cell system electric pile inlet end integrated structure

Abstract

The invention provides a novel fuel cell system stack inlet end integrated structure. The novel fuel cell system stack inlet end integrated structure comprises a left manifold assembly, an ejector assembly, a hydrogen water segregator assembly, a right manifold assembly, a gas port end plate assembly and an airtight insulating plate which are integrated into a whole, the left manifold assembly and the right manifold assembly are respectively connected to the air port end plate assembly to form an air and cooling water in-pile channel and an air and cooling water out-pile channel; the air port end plate assembly comprises an air port end plate; the gas port end plate and the airtight insulating plate form a hydrogen channel; the ejector assembly is used for providing hydrogen for the electric pile; the hydrogen water separator assembly is used for carrying out hydrogen-water separation on water-containing mixed hydrogen; and the hydrogen channel is used for feeding the separated hydrogen into the ejector assembly, and the separated hydrogen and the hydrogen introduced by the ejector assembly are mixed together and then enter an electric pile. The problems that a hydrogen fuel cell system is complex in arrangement structure and large in size, and consequently the whole vehicle arrangement consumes much time and is high in difficulty are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cells, and in particular to a novel fuel cell system stack inlet end integrated structure. Background Art

[0002] In the field of new energy, hydrogen fuel cell systems have the advantages of high energy density, long service life, strong environmental adaptability, low carbon and environmental protection. They have great application prospects in logistics and transportation, construction machinery, commercial vehicles such as buses, and mobile generators.

[0003] The above application areas all require hydrogen fuel cell systems to have new target requirements such as sustained and stable performance output, high power density ratio, modular combination, integrated compactness and light weight. However, at present, many hydrogen fuel cell systems' hydrogen, air and water inlet and outlet channels are separately connected through flange bamboo joints, and the sensors are installed separately. The main components of the hydrogen circuit, the ejector and the water distributor, are connected through silicone pipes. This results in a large number of parts, high cost, low assembly efficiency, and affects the integration and overall size of the fuel cell system. Undoubtedly, the multi-channel and multi-functional integration of the inlet and outlet manifolds, as well as the reasonable integrated layout with the end plates, can improve work efficiency and reduce costs, and achieve the integration and integration goals of the fuel cell system. Summary of the invention

[0004] According to the above proposal, most of the existing hydrogen fuel cell systems have complex structures and large volumes, which leads to time-consuming and difficult vehicle layout, and a new fuel cell system stack inlet end integrated structure is provided.

[0005] The technical means adopted by the present invention are as follows:

[0006] A novel fuel cell system stack inlet end integrated structure, including a left manifold assembly, an ejector assembly, a hydrogen water separator assembly, a right manifold assembly, a gas port end plate assembly and a gas-tight insulating plate integrated into one body;

[0007] The gas port end plate assembly and the airtight insulating plate are provided with fluid inlets and outlets corresponding to each other, and the fluid inlets and outlets include a hydrogen inlet, a hydrogen outlet, a cooling water inlet, a cooling water outlet, an air inlet and an air outlet; the left manifold assembly and the right manifold assembly are respectively connected to the fluid inlets and outlets on the gas port end plate assembly to form air and cooling water inlet and outlet channels;

[0008] The gas port end plate assembly comprises a gas port end plate, one end of which is provided with the hydrogen inlet, the cooling water outlet and the air outlet, and the other end of which is provided with the hydrogen outlet, the cooling water inlet and the air inlet; the gas port end plate and the airtight insulating plate form a hydrogen channel through corresponding flow channels opened at positions on opposite surfaces;

[0009] The ejector assembly is respectively connected to the hydrogen inlet and the hydrogen channel of the gas port end plate; the ejector assembly is used to provide hydrogen to the fuel cell stack through the hydrogen inlet;

[0010] The hydrogen water separator assembly is connected to the hydrogen outlet and the hydrogen channel of the gas outlet end plate respectively; the hydrogen water separator assembly is used to separate hydrogen and water from the water-containing mixed hydrogen after the reaction discharged from the hydrogen outlet;

[0011] The hydrogen channel is used to deliver the hydrogen separated by the hydrogen water separator assembly into the ejector assembly, and the hydrogen is mixed with the hydrogen introduced by the ejector assembly at the hydrogen inlet and then enters the fuel cell stack.

[0012] Furthermore, the left manifold assembly and the right manifold assembly are both provided with air channels and cooling water channels; the air channel and cooling water channel of the left manifold assembly are respectively connected to the air inlet and the cooling water inlet on the air port end plate; the air channel and cooling water channel of the right manifold assembly are respectively connected to the air outlet and the cooling water outlet on the air port end plate.

[0013] Further, the left manifold assembly includes a left manifold, an air path sensor and a water path sensor integrated into one body;

[0014] The right manifold assembly includes a right manifold, a water circuit temperature sensor, a water circuit pressure sensor and an air circuit sensor integrated into one body;

[0015] The left manifold and the right manifold are both provided with air passages and cooling water passages;

[0016] The air path sensor is used to monitor the temperature and pressure of the air in the air channel of the air pipe; the water path sensor is used to monitor the temperature of the cooling water in the cooling water channel of the air pipe;

[0017] The water circuit temperature sensor and the water circuit pressure sensor are used to monitor the temperature and pressure of the cooling water in the cooling water channel of the right manifold respectively; the air circuit sensor is used to monitor the temperature and pressure of the air in the air channel of the right manifold.

[0018] Furthermore, the cooling water channel and the air channel of the left manifold are respectively provided with a system water inlet interface and a system air inlet interface, the system water inlet interface is used to connect to a water pipeline providing cooling water, and the system air inlet interface is used to connect to an air pipeline providing air;

[0019] The cooling water channel of the right manifold is provided with a system exhaust port and a system water outlet interface, and the air channel is provided with a system air outlet interface; the system exhaust port is located above the system water outlet interface, and is used to discharge the gas in the cooling water in the cooling water channel of the right manifold, and the system water outlet interface is used to connect to the water pipeline for discharging cooling water; the system air outlet interface is used to connect to the air pipeline for discharging air.

[0020] Furthermore, the gas port end plate assembly also includes a hydrogen inlet temperature sensor and a hydrogen inlet pressure sensor integrated with the gas port end plate; the hydrogen inlet temperature sensor and the hydrogen inlet pressure sensor are respectively used to monitor the temperature and pressure of the hydrogen in the hydrogen inlet of the gas port end plate.

[0021] Further, the ejector assembly is provided with a system hydrogen external interface, an ejector assembly inlet and an ejector assembly outlet which are interconnected; the system hydrogen external interface is used to be connected to a hydrogen source; the ejector assembly inlet is connected to the hydrogen channel; the ejector assembly outlet is connected to the hydrogen inlet of the gas port end plate;

[0022] The hydrogen water separator assembly is provided with a hydrogen water separator assembly inlet and a hydrogen water separator assembly outlet which are interconnected; the hydrogen water separator assembly inlet is connected to the hydrogen outlet of the gas port end plate; the hydrogen water separator assembly outlet is connected to the hydrogen channel.

[0023] Furthermore, it also includes an outer side sealing glue line assembly and an inner side sealing glue line assembly;

[0024] The outer sealing rubber line assembly includes a left manifold sealing rubber line, an ejector assembly sealing rubber line, a hydrogen water separator assembly sealing rubber line and a right manifold sealing rubber line; the left manifold sealing rubber line and the right manifold sealing rubber line are respectively used to seal the fluid inlet and outlet on the left manifold assembly and the right manifold assembly and the gas port end plate assembly; the ejector assembly sealing rubber line is used to seal the interface between the ejector assembly and the hydrogen inlet and the hydrogen channel of the gas port end plate; the hydrogen water separator assembly sealing rubber line is used to seal the interface between the hydrogen water separator assembly and the hydrogen outlet and the hydrogen channel of the gas port end plate;

[0025] The inner sealing wire assembly includes a stack inlet sealing wire, a hydrogen channel sealing wire and a stack outlet sealing wire; the stack inlet sealing wire is used to seal between the gas port end plate and the corresponding hydrogen outlet, the cooling water inlet and the air inlet on the gas-tight insulating plate; the hydrogen channel sealing wire is used to seal between the gas port end plate and the corresponding flow channel on the gas-tight insulating plate; the stack outlet sealing wire is used to seal between the gas port end plate and the corresponding hydrogen inlet, the cooling water outlet and the air outlet on the gas-tight insulating plate.

[0026] Furthermore, the ejector assembly, the hydrogen water separator assembly and the gas outlet end plate are all provided with hydrogen water discharge exhaust interfaces; the hydrogen water discharge exhaust interface on the gas outlet end plate is connected to the hydrogen inlet; each of the hydrogen water discharge exhaust interfaces is connected to the same hydrogen pipeline and merged into the system tail exhaust.

[0027] Furthermore, it also includes a drain valve installed on the gas port end plate, and the drain valve is connected to the hydrogen inlet of the gas port end plate.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The novel fuel cell system stack inlet integrated structure provided by the present invention arranges integrated sensors for the manifold and the end plate, and has a built-in hydrogen channel, a multi-channel integrated layout, etc. for multi-faceted integration, eliminating the traditional single-channel interface form, and utilizing the manifold integrated structure and the end plate combination with the built-in flow channel to improve the overall integration of the fuel cell system inlet end, saving the overall layout space of the system, and by eliminating the external hydrogen circulation pipeline, reducing the hydrogen circulation flow resistance, reducing the cost of the system, and improving the fuel cell system integration and adaptability to application scenarios.

[0030] Based on the above reasons, the present invention can be widely promoted in the field of hydrogen fuel cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a schematic diagram of the integrated structure of the inlet end of the fuel cell stack of the novel fuel cell system.

[0033] Figure 2It is a schematic diagram of the explosion of the integrated structure at the inlet end of the stack of the novel fuel cell system.

[0034] Figure 3 This is a schematic diagram of the integrated structural interface at the inlet end of the fuel cell system stack.

[0035] Figure 4 Schematic diagram of the internal structure of the gas port end plate.

[0036] In the figure: 1. Left manifold assembly; 2. Ejector assembly; 3. Hydrogen water separator assembly; 4. Right manifold assembly; 5. Drain valve; 6. Air port end plate assembly; 7. Airtight insulation plate; 1.1. Left manifold; 1.2. Air path sensor; 1.3. Water path temperature sensor; 4.1. Right manifold; 4.2. Water path temperature sensor; 4.3. Water path pressure sensor; 4.4. Air path sensor; 6.1. Air port end plate; 6.2. Hydrogen path temperature sensor; 6.3. Hydrogen path pressure sensor; 8.1. Left manifold assembly sealant line; 8.2. Ejector assembly sealant line; 8.3. Hydrogen water separator assembly sealant line 8.4, right manifold assembly sealant line; 9.1, stack inlet sealant line; 9.2, hydrogen channel sealant line; 9.3, stack outlet sealant line; 10.1, system water inlet interface; 10.2, system air inlet interface; 10.3, system exhaust port; 10.4, system water outlet interface; 10.5, system air outlet interface; 10.6, hydrogen water drainage and exhaust interface; 10.7, system hydrogen external interface; 11.1, hydrogen water separator assembly inlet; 11.2, hydrogen water separator assembly outlet; 11.3, ejector assembly inlet; 11.4, ejector assembly outlet. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0041] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0042] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0043] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] Example 1

[0045] like Figure 1-4 As shown, the present invention provides a novel fuel cell system stack inlet end integrated structure, including a left manifold assembly 1, an ejector assembly 2, a hydrogen water separator assembly 3, a right manifold assembly 4, a gas port end plate assembly 6 and a gas-tight insulating plate 7 assembled and integrated into one by bolts;

[0046] The left manifold assembly 1, the ejector assembly 2, the hydrogen water separator assembly 3 and the right manifold assembly 4 are located on one side of the gas port end plate assembly 6, and the airtight insulating plate 7 is located on the other side of the gas port end plate assembly 6;

[0047] The gas port end plate assembly 6 and the airtight insulating plate 7 are provided with fluid inlets and outlets corresponding to each other, and the fluid inlets and outlets include a hydrogen inlet, a hydrogen outlet, a cooling water inlet, a cooling water outlet, an air inlet and an air outlet; the stack inlet end integrated structure can be installed at the stack inlet end and communicated with the inside of the stack through the fluid inlets and outlets; the left manifold assembly 1 and the right manifold assembly 4 are respectively connected to the fluid inlets and outlets on the gas port end plate assembly 6 to form air and cooling water inlet and outlet channels (inlet and outlet refer to the inlet and outlet of the stack);

[0048] The gas port end plate assembly 6 comprises a gas port end plate 6.1, one end of which is provided with the hydrogen inlet, the cooling water outlet and the air outlet, and the other end of which is provided with the hydrogen outlet, the cooling water inlet and the air inlet; the gas port end plate 6.1 and the airtight insulating plate 7 form a hydrogen channel through corresponding flow channels opened at positions on opposite surfaces;

[0049] The ejector assembly 2 is connected to the hydrogen inlet and the hydrogen channel of the gas port end plate 6.1 respectively; the ejector assembly 2 is used to provide hydrogen to the fuel cell stack through the hydrogen inlet;

[0050] The hydrogen water separator assembly 3 is connected to the hydrogen outlet and the hydrogen channel of the gas outlet end plate 6.1 respectively; the hydrogen water separator assembly 3 is used to separate hydrogen and water from the water-containing mixed hydrogen after the reaction discharged from the hydrogen outlet;

[0051] The hydrogen channel is used to deliver the hydrogen separated by the hydrogen water separator assembly 3 into the ejector assembly 2, and after being fully mixed with the hydrogen introduced by the ejector assembly 2, enter the fuel cell stack, thereby forming a hydrogen circulation inside the integrated structure at the fuel cell stack inlet end.

[0052] Furthermore, the airtight insulating plate 7 is used as an insulating plate between the fuel cell stack inlet end integrated structure and the fuel cell stack.

[0053] Furthermore, air channels and cooling water channels are provided inside the left manifold assembly 1 and the right manifold assembly 4; the air channel and cooling water channel of the left manifold assembly 1 are respectively connected to the air inlet and the cooling water inlet on the air port end plate 6.1, for providing air and cooling water to the fuel cell stack; the air channel and cooling water channel of the right manifold assembly 4 are respectively connected to the air outlet and the cooling water outlet on the air port end plate 6.1, for discharging air and cooling water after the fuel cell stack reaction.

[0054] Furthermore, the left manifold assembly 1 includes a left manifold 1.1, an air path sensor 1.2 and a water path sensor 1.3 which are integrated into one body;

[0055] The right manifold assembly 4 includes a right manifold 4.1, a water path temperature sensor 4.2, a water path pressure sensor 4.3 and an air path sensor 4.4 which are integrated into one;

[0056] The left manifold 1.1 and the right manifold 4.1 are both provided with air channels and cooling water channels;

[0057] The air path sensor 1.2 is used to monitor the temperature and pressure of the air in the air channel of the air pipe 1.1; the water path sensor 1.3 is used to monitor the temperature of the cooling water in the cooling water channel of the air pipe 1.1;

[0058] The water circuit temperature sensor 4.2 and the water circuit pressure sensor 4.3 are used to monitor the temperature and pressure of the cooling water in the cooling water channel of the right manifold 4.1 respectively; the air circuit sensor 4.4 is used to monitor the temperature and pressure of the air in the air channel of the right manifold 4.1.

[0059] Furthermore, the cooling water channel and the air channel of the left manifold 1.1 are respectively provided with a system water inlet interface 10.1 and a system air inlet interface 10.2, wherein the system water inlet interface 10.1 is used to connect to a water pipeline providing cooling water, and the system air inlet interface 10.2 is used to connect to an air pipeline providing air;

[0060] The cooling water channel of the right manifold 4.1 is provided with a system exhaust port 10.3 and a system water outlet interface 10.4, and the air channel is provided with a system air outlet interface 10.5; the system exhaust port 10.3 is located above the system water outlet interface 10.4, and is used to discharge the gas in the cooling water in the cooling water channel of the right manifold 4.1, so as to meet the exhaust demand of the system cooling circuit, and the system water outlet interface 10.4 is used to connect to the water pipeline for discharging cooling water (due to the different gravity of gas and cooling water, they can be discharged through different interfaces); the system air outlet interface 10.5 is used to connect to the air pipeline for discharging air.

[0061] Furthermore, the cooling water channel of the right manifold 4.1 is provided with three system water outlet interfaces 10.4 for connecting different cooling components.

[0062] Furthermore, the ejector assembly 2, the hydrogen water separator assembly 3 and the gas outlet end plate 6.1 are all provided with a hydrogen water discharge exhaust interface 10.6; the hydrogen water discharge exhaust interface 10.6 on the gas outlet end plate 6.1 is connected to the hydrogen inlet; each of the hydrogen water discharge exhaust interfaces 10.6 is connected to the same hydrogen pipeline and merged to the system tail exhaust, and is respectively used to relieve pressure, drain water and discharge nitrogen for the ejector assembly 2, the hydrogen water separator assembly 3 and the hydrogen inlet of the gas outlet end plate 6.1.

[0063] Furthermore, it also includes a drain valve 5 installed on the gas port end plate 6.1. The drain valve 5 is located on the side of the gas port end plate 6.1 where the left manifold assembly 1 is installed, and is connected to the hydrogen inlet of the gas port end plate 6.1, so as to meet the drainage requirements before the hydrogen enters the fuel cell stack through the hydrogen inlet.

[0064] Furthermore, the drain valve 5 is installed on the hydrogen drain exhaust interface 10.6 on the gas port end plate 6.1.

[0065] Furthermore, the gas inlet end plate assembly 6 also includes a hydrogen inlet temperature sensor 6.2 and a hydrogen inlet pressure sensor 6.3 which are integrated with the gas inlet end plate 6.1; the hydrogen inlet temperature sensor 6.2 and the hydrogen inlet pressure sensor 6.3 are respectively used to monitor the temperature and pressure of the hydrogen in the hydrogen inlet of the gas inlet end plate 6.1, that is, the temperature and pressure of the hydrogen entering the fuel cell stack.

[0066] Further, the ejector assembly 2 is provided with a system hydrogen external interface 10.7, an ejector assembly inlet 11.3 and an ejector assembly outlet 11.4 which are interconnected; the system hydrogen external interface 10.7 is used to connect to a hydrogen source; the ejector assembly inlet 11.3 is connected to the hydrogen channel; the ejector assembly outlet 11.4 is connected to the hydrogen inlet of the gas port end plate 6.1;

[0067] The hydrogen water separator assembly 3 is provided with a hydrogen water separator assembly inlet 11.1 and a hydrogen water separator assembly outlet 11.2 which are interconnected; the hydrogen water separator assembly inlet 11.1 is connected to the hydrogen outlet of the gas port end plate 6.1; the hydrogen water separator assembly outlet 11.2 is connected to the hydrogen channel.

[0068] Furthermore, the circulation flow process of hydrogen inside the integrated structure at the inlet end of the stack described in the present invention is as follows: hydrogen enters the ejector assembly 2 through the system hydrogen external interface 10.7 and reaches the hydrogen inlet through the ejector assembly outlet 11.4, and the hydrogen separated by the hydrogen water separator assembly 3 introduced through the ejector assembly inlet 11.3 also reaches the ejector assembly outlet 11.4, and the two hydrogens are fully mixed at the hydrogen inlet and then enter the stack; the hydrogen after the stack reaction enters the hydrogen water separator assembly 3 through the hydrogen outlet and the hydrogen water separator assembly inlet 11.1 for hydrogen-water separation, and the separated hydrogen enters the hydrogen water separator assembly outlet 11.2, and then enters the ejector assembly inlet 11.3 through the hydrogen channel, thereby completing the internal circulation of hydrogen; the integrated structure at the inlet end of the stack described in the present invention realizes the hydrogen circulation path of the fuel cell system without pipeline connection, making the layout space of the integrated structure compact.

[0069] Furthermore, it also includes an outer side sealing glue line assembly and an inner side sealing glue line assembly;

[0070] The outer sealing rubber line assembly includes a left manifold sealing rubber line 8.1, an ejector assembly sealing rubber line 8.2, a hydrogen water separator assembly sealing rubber line 8.3 and a right manifold sealing rubber line 8.4; the left manifold sealing rubber line 8.1 and the right manifold sealing rubber line 8.4 are respectively used to seal the fluid inlet and outlet between the left manifold assembly 1 and the right manifold assembly 4 and the gas port end plate assembly 6; the ejector assembly sealing rubber line 8.2 is used to seal the interface between the ejector assembly 2 and the hydrogen inlet and the hydrogen channel of the gas port end plate 6.1; the hydrogen water separator assembly sealing rubber line 8.3 is used to seal the interface between the hydrogen water separator assembly 3 and the hydrogen outlet and the hydrogen channel of the gas port end plate 6.1;

[0071] The inner sealing rubber wire assembly includes a stack inlet sealing rubber wire 9.1, a hydrogen channel sealing rubber wire 9.2 and a stack outlet sealing rubber wire 9.3; the stack inlet sealing rubber wire 9.1 is used to seal the gas port end plate 6.1 and the corresponding hydrogen outlet, the cooling water inlet and the air inlet on the gas-tight insulating plate 7; the hydrogen channel sealing rubber wire 9.2 is used to seal the gas port end plate 6.1 and the corresponding flow channel on the gas-tight insulating plate 7; the stack outlet sealing rubber wire 9.3 is used to seal the gas port end plate 6.1 and the corresponding hydrogen inlet, the cooling water outlet and the air outlet on the gas-tight insulating plate 7.

[0072] In the present invention, the hydrogen circulation circuit has no pipeline connection, and the function of the hydrogen channel is formed by assembling the left manifold assembly, the ejector assembly, the hydrogen water separator assembly, the drain valve and the gas port end plate assembly, and the airtight insulating plate; the left and right manifold assemblies and the gas port end plate assembly have the sensor integration function; the interface diversity of the left and right manifold assemblies can meet the overall layout requirements of the system; by adopting the present invention, the overall layout of the inlet end of the fuel cell system stack is compact, the sensor integration layout is reasonable, the built-in hydrogen channel is simple and feasible, the system occupancy space is reduced, and the corresponding cost is saved.

[0073] The present invention integrates all sensors and interface requirements at the inlet end of the fuel cell system stack in a sandwich form, and the components and end plates are sealed by sealing rubber lines, and a pipeline-free hydrogen circulation path is achieved (a hydrogen channel formed between the gas inlet end plate and the airtight insulating plate), thereby reducing flow resistance, reducing the total number of parts, saving system space, improving system assembly efficiency, improving system integration, improving system volume power density ratio, and improving the adaptability of system application scenarios.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel fuel cell system stack inlet integrated structure, characterized in that: It includes a left manifold assembly, an ejector assembly, a hydrogen water separator assembly, a right manifold assembly, a gas port end plate assembly and a gas-tight insulating plate which are integrated into one; The gas port end plate assembly and the airtight insulating plate are provided with fluid inlets and outlets corresponding to each other, and the fluid inlets and outlets include a hydrogen inlet, a hydrogen outlet, a cooling water inlet, a cooling water outlet, an air inlet and an air outlet; the left manifold assembly and the right manifold assembly are respectively connected to the fluid inlets and outlets on the gas port end plate assembly to form air and cooling water inlet and outlet channels; The gas port end plate assembly comprises a gas port end plate, one end of which is provided with the hydrogen inlet, the cooling water outlet and the air outlet, and the other end of which is provided with the hydrogen outlet, the cooling water inlet and the air inlet; the gas port end plate and the airtight insulating plate form a hydrogen channel through corresponding flow channels opened at positions on opposite surfaces; The ejector assembly is respectively connected to the hydrogen inlet and the hydrogen channel of the gas port end plate; the ejector assembly is used to provide hydrogen to the fuel cell stack through the hydrogen inlet; The hydrogen water separator assembly is connected to the hydrogen outlet and the hydrogen channel of the gas outlet end plate respectively; the hydrogen water separator assembly is used to separate hydrogen and water from the water-containing mixed hydrogen after the reaction discharged from the hydrogen outlet; The hydrogen channel is used to deliver the hydrogen separated by the hydrogen water separator assembly into the ejector assembly, and the hydrogen is mixed with the hydrogen introduced by the ejector assembly at the hydrogen inlet and then enters the fuel cell stack.

2. The novel fuel cell system stack inlet integrated structure according to claim 1 is characterized in that: Air channels and cooling water channels are provided inside the left manifold assembly and the right manifold assembly; the air channels and cooling water channels of the left manifold assembly are respectively connected to the air inlet and the cooling water inlet on the air port end plate; the air channels and cooling water channels of the right manifold assembly are respectively connected to the air outlet and the cooling water outlet on the air port end plate.

3. The novel fuel cell system stack inlet integrated structure according to claim 2 is characterized in that: The left manifold assembly includes a left manifold, an air path sensor and a water path sensor integrated into one body; The right manifold assembly includes a right manifold, a water circuit temperature sensor, a water circuit pressure sensor and an air circuit sensor integrated into one body; The left manifold and the right manifold are both provided with air passages and cooling water passages; The air path sensor is used to monitor the temperature and pressure of the air in the air channel of the air pipe; the water path sensor is used to monitor the temperature of the cooling water in the cooling water channel of the air pipe; The water circuit temperature sensor and the water circuit pressure sensor are used to monitor the temperature and pressure of the cooling water in the cooling water channel of the right manifold respectively; the air circuit sensor is used to monitor the temperature and pressure of the air in the air channel of the right manifold.

4. The novel fuel cell system stack inlet integrated structure according to claim 2 is characterized in that: The cooling water channel and the air channel of the left manifold are respectively provided with a system water inlet interface and a system air inlet interface, wherein the system water inlet interface is used to connect to a water pipeline providing cooling water, and the system air inlet interface is used to connect to an air pipeline providing air; The cooling water channel of the right manifold is provided with a system exhaust port and a system water outlet interface, and the air channel is provided with a system air outlet interface; the system exhaust port is located above the system water outlet interface, and is used to discharge the gas in the cooling water in the cooling water channel of the right manifold, and the system water outlet interface is used to connect to the water pipeline for discharging cooling water; the system air outlet interface is used to connect to the air pipeline for discharging air.

5. The novel fuel cell system stack inlet integrated structure according to claim 1 is characterized in that: The gas port end plate assembly also includes a hydrogen inlet temperature sensor and a hydrogen inlet pressure sensor integrated with the gas port end plate; the hydrogen inlet temperature sensor and the hydrogen inlet pressure sensor are respectively used to monitor the temperature and pressure of the hydrogen in the hydrogen inlet of the gas port end plate.

6. The novel fuel cell system stack inlet integrated structure according to claim 1 is characterized in that: The ejector assembly is provided with a system hydrogen external interface, an ejector assembly inlet and an ejector assembly outlet which are interconnected; the system hydrogen external interface is used to be connected to a hydrogen source; the ejector assembly inlet is connected to the hydrogen channel; the ejector assembly outlet is connected to the hydrogen inlet of the gas port end plate; The hydrogen water separator assembly is provided with a hydrogen water separator assembly inlet and a hydrogen water separator assembly outlet which are interconnected; the hydrogen water separator assembly inlet is connected to the hydrogen outlet of the gas port end plate; the hydrogen water separator assembly outlet is connected to the hydrogen channel.

7. The novel fuel cell system stack inlet integrated structure according to claim 1 is characterized in that: Also includes an outer side sealing glue line assembly and an inner side sealing glue line assembly; The outer sealing rubber line assembly includes a left manifold sealing rubber line, an ejector assembly sealing rubber line, a hydrogen water separator assembly sealing rubber line and a right manifold sealing rubber line; the left manifold sealing rubber line and the right manifold sealing rubber line are respectively used to seal the fluid inlet and outlet on the left manifold assembly and the right manifold assembly and the gas port end plate assembly; the ejector assembly sealing rubber line is used to seal the interface between the ejector assembly and the hydrogen inlet and the hydrogen channel of the gas port end plate; the hydrogen water separator assembly sealing rubber line is used to seal the interface between the hydrogen water separator assembly and the hydrogen outlet and the hydrogen channel of the gas port end plate; The inner sealing wire assembly includes a stack inlet sealing wire, a hydrogen channel sealing wire and a stack outlet sealing wire; the stack inlet sealing wire is used to seal between the gas port end plate and the corresponding hydrogen outlet, the cooling water inlet and the air inlet on the gas-tight insulating plate; the hydrogen channel sealing wire is used to seal between the gas port end plate and the corresponding flow channel on the gas-tight insulating plate; the stack outlet sealing wire is used to seal between the gas port end plate and the corresponding hydrogen inlet, the cooling water outlet and the air outlet on the gas-tight insulating plate.

8. The novel fuel cell system stack inlet integrated structure according to claim 1 is characterized in that: The ejector assembly, the hydrogen water separator assembly and the gas outlet end plate are all provided with hydrogen water discharge exhaust interfaces; the hydrogen water discharge exhaust interfaces on the gas outlet end plate are connected to the hydrogen inlet; each of the hydrogen water discharge exhaust interfaces is connected to the same hydrogen pipeline and merged into the system tail exhaust.

9. The novel fuel cell system stack inlet integrated structure according to claim 1 is characterized in that: It also includes a drain valve installed on the gas port end plate, and the drain valve is connected to the hydrogen inlet of the gas port end plate.

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