Fuel cell stack front-end integrated joint

Abstract

The utility model discloses an integrated joint at the front end of a fuel cell stack, which relates to the technical field of fuel cell system structure integration and is provided with an integrated mounting plate, one side of the integrated mounting plate is respectively provided with a water path stack outlet pipe, a hydrogen pump stack inlet pipe and an ejector stack inlet pipe, and the other side of the integrated mounting plate is provided with a converging body. One end of the water path stack outlet pipe, one end of the hydrogen pump stack inlet pipe and one end of the ejector stack inlet pipe are connected with the converging body, the integrated mounting plate is provided with a hydrogen opening and a water path opening, the hydrogen opening is communicated with the hydrogen pump stack inlet pipe and the ejector stack inlet pipe, the water path opening is communicated with the water path stack outlet pipe, and the converging body is provided with a water path temperature and pressure integrated sensor and a hydrogen path pressure sensor. According to the technical scheme, compared with the prior art, the fuel cell has the advantages that the internal structure of the fuel cell is optimized, and the purposes of high integration level, small occupied space, reduced mounting procedures, high maintainability and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell system structure integration, in particular to a fuel cell stack front end integrated connector. Background Art

[0002] A fuel cell is a device that converts the chemical energy of a fuel into electrical energy. Hydrogen fuel cells use hydrogen and oxygen as raw materials and have no mechanical transmission components, resulting in no noise pollution. The exhaust gases are water, air, and a small amount of hydrogen, which is environmentally friendly. Because the number of monolithic cells connected in series in a single stack is limited, high-power fuel cell system integration typically involves a dual or even multi-stack configuration. Each stack typically has independent gas and liquid outlet channels. Each stack requires separate pipes to discharge the liquid and gas from the liquid and gas outlet channels, resulting in a large number of pipes required for these outlets. Each pipe has its own connector, one end connecting to the stack inlet and outlet, and the other end connecting to the corresponding component via silicone tubing. This leads to disadvantages such as the large number of connectors required, a complex installation process, large space requirements, and complex maintenance. Therefore, this application proposes a front-end integrated connector for a fuel cell stack that integrates the water and hydrogen line connectors into one unit, achieving high integration, minimal space requirements, a simplified and simplified installation process, and enhanced maintainability. Summary of the Invention

[0003] In view of the defects existing in the prior art, the purpose of the present invention is to provide a fuel cell stack front-end integrated connector, which aims to solve the technical problems in the related art to a certain extent.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A fuel cell stack front-end integrated connector is provided with an integrated mounting plate. A water outlet pipe, a hydrogen pump inlet pipe and an ejector inlet pipe are respectively provided on one side of the integrated mounting plate. A manifold is provided on the other side of the integrated mounting plate. One ends of the water outlet pipe, the hydrogen pump inlet pipe and the ejector inlet pipe are connected to the manifold. The integrated mounting plate is provided with a hydrogen port and a water port. The hydrogen port is respectively connected to the hydrogen pump inlet pipe and the ejector inlet pipe. The water port is connected to the water outlet pipe. The manifold is provided with a water temperature and pressure integrated sensor and a hydrogen pressure sensor. The water temperature and pressure integrated sensor is connected to the water outlet pipe. The hydrogen pressure sensor is connected to the intersection of the hydrogen pump inlet pipe and the ejector inlet pipe.

[0006] Based on the above technical solution, the two ends of the water outlet pipe are connected to the water pump and the fuel cell stack respectively.

[0007] Based on the above technical solution, the two ends of the hydrogen pump inlet pipe are connected to the hydrogen pump and the fuel cell stack respectively.

[0008] On the basis of the above technical solution, sealing rings are provided on the outer edges of the hydrogen outlet and the water outlet.

[0009] On the basis of the above technical solution, the collector is a sphere or a rectangular hollow structure.

[0010] On the basis of the above technical solution, the diameter of the water outlet pipe is larger than the diameter of the hydrogen pump inlet pipe, and the hydrogen pump inlet pipe and the ejector inlet pipe are the same in size and shape.

[0011] On the basis of the above technical solution, the integrated mounting plate is further provided with at least one mounting hole, which is arranged on the edge of the integrated mounting plate and is evenly distributed.

[0012] On the basis of the above technical solution, the manifold is further provided with an overflow port, which is connected to the water outlet of the fuel cell stack.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] Compared with the existing technology, the front-end integrated connector of the fuel cell stack in the present invention integrates the liquid outlet and gas outlet modules of the two stacks together, reducing the internal space occupied by the liquid outlet and gas outlet pipelines in the fuel cell, optimizing the internal structure of the fuel cell, and achieving the goals of high integration, small space occupation, reduced installation process and high maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a fuel cell stack front-end integrated connector in an embodiment of the present utility model;

[0016] Figure 2 This is a front view of an integrated connector at the front end of a fuel cell stack in an embodiment of the present utility model;

[0017] Figure 3 This is a left side view of a front end integrated connector of a fuel cell stack in an embodiment of the present utility model;

[0018] Figure 4 This is a rear view of a front-end integrated connector of a fuel cell stack in an embodiment of the present utility model;

[0019] Figure 5 This is a top view of a front-end integrated connector of a fuel cell stack in an embodiment of the present invention.

[0020] In the figure: 1-water outlet pipe, 2-hydrogen pump inlet pipe, 3-ejector inlet pipe, 4-overflow port, 5-water temperature and pressure integrated sensor, 6-hydrogen pressure sensor, 7-integrated mounting plate, 71-hydrogen port, 72-water outlet, 8-manifold. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0022] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0023] See also Figure 1 The schematic diagram of the structure of a fuel cell stack front-end integrated connector in an embodiment of the present invention is shown, which is provided with an integrated mounting plate 7. On one side of the integrated mounting plate 7, a water outlet pipe 1, a hydrogen pump inlet pipe 2, and an ejector inlet pipe 3 are respectively provided. On the other side of the integrated mounting plate 7, a collecting body 8 is provided. One end of the water outlet pipe 1, the hydrogen pump inlet pipe 2, and the ejector inlet pipe 3 are connected to the collecting body 8. The integrated mounting plate 7 is provided with a hydrogen port 71 and a water port 72. The hydrogen port 71 is respectively connected to the hydrogen pump inlet pipe 2 and the ejector inlet pipe 3, and the water port 72 is connected to the water outlet pipe 1. Furthermore, in the embodiment of the present application, the integrated mounting plate 7 is fixed on the front-end panel of the fuel cell stack as a base. The water and gas pipes are staggered in the collecting body 8 to connect the stack and the external water or external gas, respectively. This will greatly improve the compactness of the pipeline layout and provide a good structural integration processing solution. It should be noted that the front-end integrated connector of the fuel cell stack in this embodiment is a structural adaptation design for the fuel cell system integration of the hydrogen pump and ejector parallel design scheme, so there are two hydrogen inlet pipes such as the hydrogen pump inlet pipe 2 and the ejector inlet pipe 3.

[0024] See also Figure 2 The figure shows a front view of an integrated connector at the front end of a fuel cell stack in an embodiment of the present utility model; the water outlet pipe 1, the hydrogen pump inlet pipe 2 and the ejector inlet pipe 3 are arranged in parallel and side by side to facilitate user assembly. In this embodiment, the two ends of the water outlet pipe 1 are respectively connected to the water pump and the stack. The water outlet pipe 1 adopts a rubber hose, especially a silicone hose, to ensure a small ion precipitation rate and avoid affecting the normal operation of the stack.

[0025] See also Figure 3 Shown is a left view of a fuel cell stack front-end integrated connector in an embodiment of the present invention. The manifold 8 is also provided with an overflow port 4, which connects to the stack water outlet. In this embodiment, the hydrogen pump inlet pipe 2 connects the hydrogen pump and the stack at both ends. The hydrogen pump inlet pipe 2 is responsible for connecting the hydrogen pump and the stack hydrogen inlet to ensure hydrogen supply.

[0026] See also Figure 4The figure shows a rear view of a front-end integrated connector for a fuel cell stack in an embodiment of the present invention. The hydrogen port 71 and the water port 72 are arranged side by side. In this embodiment, the outer edges of the hydrogen port 71 and the water port 72 are both provided with sealing rings. To ensure the sealing performance, sealing rings and corresponding sealing grooves are provided on the outer edges of the hydrogen port 71 and the water port 72 to ensure the safety of hydrogen and water. In particular, the hydrogen port 71 is particularly important. Since hydrogen has a small molecular weight and is highly volatile, this part is usually fully sealed, increasing the size and redundancy of the sealing ring.

[0027] In this embodiment, the collecting body 8 is a sphere or a rectangular hollow structure. If structural integration is required, the collecting body 8 can also be set into a special shape or other shapes to meet the assembly and structural space requirements.

[0028] In this embodiment, the diameter of the waterway exit pipe 1 is larger than that of the hydrogen pump inlet pipe 2. The hydrogen pump inlet pipe 2 and the ejector inlet pipe 3 are identical in size and shape. The hydrogen flow rate requirement is minimal, so a small pipe diameter can be designed. However, the waterway controls the heat dissipation requirements of the fuel cell stack and must maintain a reasonable flow rate. In this embodiment, the largest pipe diameter is used to meet this technical requirement.

[0029] See also Figure 5 The figure shows a top view of a front-end integrated connector of a fuel cell stack in an embodiment of the present utility model. The collecting body 8 is provided with a water path temperature and pressure integrated sensor 5 and a hydrogen path pressure sensor 6. The water path temperature and pressure integrated sensor 5 is connected to the water path stack outlet pipe 1, and the hydrogen path pressure sensor 6 is connected to the intersection of the hydrogen pump stack inlet pipe 2 and the ejector stack inlet pipe 3.

[0030] In this embodiment, the integrated mounting plate 7 is further provided with at least one mounting hole, which is evenly distributed along the edge of the integrated mounting plate 7. The mounting holes can be screw holes and are fastened together by bolts. Compared with the prior art, the front-end integrated connector of the fuel cell stack in this embodiment integrates the liquid and gas outlet modules of the two fuel cell stacks together, reducing the internal space occupied by the liquid and gas outlet pipelines in the fuel cell, optimizing the internal structure of the fuel cell, and achieving high integration, small space occupation, simplified installation process, and high maintainability.

[0031] The present invention is not limited to the above-described embodiments. Persons skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are considered to be within the scope of protection of the present invention. Any matters not described in detail in this specification are prior art known to those skilled in the art.

Claims

1. A fuel cell stack front end integrated connector, provided with an integrated mounting plate (7), characterized in that: A water outlet pipe (1), a hydrogen pump inlet pipe (2) and an ejector inlet pipe (3) are respectively provided on one side of the integrated mounting plate (7), and a collecting body (8) is provided on the other side of the integrated mounting plate (7). One end of the water outlet pipe (1), the hydrogen pump inlet pipe (2) and the ejector inlet pipe (3) are connected to the collecting body (8), wherein the integrated mounting plate (7) is provided with a hydrogen port (71) and a water outlet (72), the hydrogen port (71) is respectively connected to the hydrogen pump inlet pipe (2) and the ejector inlet pipe (3), and the water outlet (72) is connected to the water outlet pipe (1), and the collecting body (8) is provided with a water temperature and pressure integrated sensor (5) and a hydrogen pressure sensor (6), the water temperature and pressure integrated sensor (5) is connected to the water outlet pipe (1), and the hydrogen pressure sensor (6) is connected to the intersection of the hydrogen pump inlet pipe (2) and the ejector inlet pipe (3).

2. The fuel cell stack front end integrated connector according to claim 1, characterized in that: The two ends of the water outlet pipe (1) are connected to a water pump and a fuel cell stack respectively.

3. The fuel cell stack front end integrated connector according to claim 1, characterized in that: The two ends of the hydrogen pump inlet pipe (2) are connected to the hydrogen pump and the fuel cell stack respectively.

4. The fuel cell stack front end integrated connector according to claim 1, characterized in that: The outer edges of the hydrogen port (71) and the water port (72) are both provided with sealing rings.

5. The fuel cell stack front end integrated connector according to claim 1, characterized in that: The collecting body (8) is a sphere or a rectangular hollow structure.

6. The fuel cell stack front end integrated connector according to claim 1, characterized in that: The diameter of the water channel stack outlet pipe (1) is larger than the diameter of the hydrogen pump stack inlet pipe (2), and the hydrogen pump stack inlet pipe (2) and the ejector stack inlet pipe (3) are the same in size and shape.

7. The fuel cell stack front end integrated connector according to claim 1, characterized in that: The integrated mounting plate (7) is further provided with at least one mounting hole, which is arranged on the edge of the integrated mounting plate (7) and is evenly distributed.

8. The fuel cell stack front end integrated connector according to claim 1, characterized in that: The collecting body (8) is further provided with an overflow port (4), and the overflow port (4) is connected to the water outlet of the battery stack.

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