Air inlet and outlet manifold structure of high-power fuel cell engine

Abstract

The utility model discloses an air inlet and outlet manifold structure of a high-power fuel cell engine, which comprises an electric pile, the electric pile is divided into an upper electric pile and a lower electric pile, and a manifold assembly is detachably arranged on the end face of one side of the electric pile. According to the utility model, the manifolds of the upper pile and the lower pile are connected with the shell structure of the electric pile in a flange connection manner, so that the reliability is high, the installation is convenient, the manifolds are connected through pipelines, and the manifolds are small in size, small in occupied space and high in space utilization rate; the air inlet manifold and the air outlet manifold are integrated with temperature and pressure sensors, so that the temperature and the pressure of air entering and exiting the reactor can be monitored in real time; the deflection angle of the air distribution cavity of the first air outlet manifold and the deflection angle of the air distribution cavity of the second air outlet manifold in the vertical direction range from 30 degrees to 60 degrees, and moisture accumulation can be effectively prevented when stack-out moist air flows through the internal air distribution cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to an air inlet and outlet manifold structure of a high-power fuel cell engine. Background Art

[0002] A hydrogen fuel cell engine is a device that uses hydrogen and oxygen to perform an electrochemical reaction in a fuel cell stack. Through this process, water, heat and electricity are generated to provide power for the vehicle. The hydrogen fuel cell engine system is mainly composed of the following parts: the fuel cell stack, which is responsible for the electrochemical reaction of hydrogen and oxygen; the DCDC electronic control system, which is used to convert and control electrical energy; the hydrogen circulation system, which ensures the supply and recycling of hydrogen; the air circulation system, which provides oxygen and promotes the reaction; and the water and heat management circulation system, which is used to manage and regulate the water and heat energy circulation within the system. These systems work together to form an efficient and clean hydrogen fuel cell engine system.

[0003] For high-power fuel cell engines, especially those with dual-stack solutions, their air circulation systems include large-volume components such as air compressors, intercoolers, humidifiers, and three-way valves. They are large in size and irregular in shape, and the existing air distribution structure still needs to be connected to multiple external pipes, which occupies a relatively large space. In addition, air distribution is directly connected using hoses, which has low space utilization and is not conducive to the integrated layout design of the engine. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide an air inlet and outlet manifold structure for a high-power fuel cell engine.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions, including:

[0006] A fuel cell stack, the fuel cell stack is divided into an upper fuel cell stack and a lower fuel cell stack, a manifold assembly is detachably mounted on one end surface of the fuel cell stack, the manifold assembly includes a first air intake manifold, a second air intake manifold, a first air outlet manifold and a second air outlet manifold;

[0007] An air inlet is provided at the lower portion of the second air intake manifold, and an air outlet is provided at the lower portion of the second air outlet manifold. Air flows into the fuel cell stack from the first air intake manifold and the second air intake manifold through the air inlet, and then flows out from the first air outlet manifold and the second air outlet manifold through the air outlet. The temperature and pressure of the air entering and leaving the stack are monitored by sensors.

[0008] As a further description of the above technical solution, the manifold assembly is detachably mounted on one side of the fuel cell stack via a flange.

[0009] As a further description of the above technical solution, the first air intake manifold and the second air intake manifold are connected through a first pipeline, and the first air outlet manifold and the second air outlet manifold are connected through a second pipeline.

[0010] As a further description of the above technical solution, an upper stack air inlet is provided at one end of the first air intake manifold, and a lower stack air inlet is provided at one end of the second air intake manifold. Air enters the air distribution cavity inside the first air intake manifold and the second air intake manifold through the air inlet and flows into the fuel cell stack after being diverted.

[0011] As a further description of the above technical solution, an upper stack air outlet is provided at one end of the first air outlet manifold, and a lower stack air outlet is provided at one end of the second air outlet manifold. The air enters the air distribution cavity inside the first air intake manifold and the second air intake manifold, merges, and then flows out of the battery stack through the air outlet.

[0012] As a further description of the above technical solution, a first temperature sensor and a first pressure sensor are provided on one side of the second air intake manifold, and a second temperature sensor and a second pressure sensor are provided on one side of the second air outlet manifold.

[0013] As a further description of the above technical solution, the vertical deflection angle of the air distribution cavity of the first air intake manifold and the second air intake manifold is 90°.

[0014] As a further description of the above technical solution, the vertical deflection angle of the air distribution cavity of the first air outlet manifold and the second air outlet manifold is 30°-60°.

[0015] As a further description of the above technical solution, the first temperature sensor and the second temperature sensor are installed in a direction vertically upward or horizontally.

[0016] As a further description of the above technical solution, the first pressure sensor and the second pressure sensor are installed in a vertically upward direction.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. In the utility model, the manifolds of the upper and lower stacks are connected to the shell structure of the stack by flange connection, which has high reliability and convenient installation. They are connected by pipelines, have small overall volume, small occupied space, and high space utilization;

[0019] 2. In the present invention, both the inlet and outlet manifolds are integrated with temperature and pressure sensors, which can monitor the temperature and pressure of the air entering and leaving the stack in real time;

[0020] 3. In the utility model, the vertical deflection angle of the air distribution chamber of the first air outlet manifold and the second air outlet manifold is 30°-60°, which can effectively prevent moisture accumulation when the wet air out of the stack flows through the internal air distribution chamber.

[0021] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the inlet and outlet manifold structure of the utility model;

[0023] Figure 2 It is a side view of the inlet and outlet manifold structure of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the first air intake manifold of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the second air intake manifold of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the first air outlet manifold of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the second air outlet manifold of the utility model.

[0028] Reference numerals:

[0029] 1. Upper battery stack; 2. Lower battery stack; 3. First air intake manifold; 4. Second air intake manifold; 5. First air outlet manifold; 6. Second air outlet manifold; 7. First pipeline; 8. Second pipeline; 9. First temperature sensor; 10. First pressure sensor; 11. Second temperature sensor; 12. Second pressure sensor; 130. Air distribution chamber; 131. Air inlet; 132. Upper stack air inlet; 133. Lower stack air inlet; 141. Air outlet; 142. Upper stack air outlet; 143. Lower stack air outlet. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0031] like Figure 1-Figure 6As shown, in one embodiment, a high-power fuel cell engine air inlet and outlet manifold structure includes: a stack, the stack is divided into an upper stack 1 and a lower stack 2, and a manifold assembly is detachably mounted on one end face of the stack. Specifically, the manifolds of the upper and lower stacks are detachably mounted on one side of the stack by flange connection. The manifold assembly is connected to the shell structure of the stack through a pipeline, and the overall volume is small, easy to install, and occupies less space, which effectively improves the space utilization rate.

[0032] like Figure 1-Figure 6 As shown, in this embodiment, the manifold assembly includes a first air intake manifold 3 , a second air intake manifold 4 , a first air outlet manifold 5 and a second air outlet manifold 6 .

[0033] An air inlet 131 is provided at the lower part of the second air intake manifold 4, and an air outlet 141 is provided at the lower part of the second air outlet manifold 6. The air first enters the first air intake manifold 3 and the second air intake manifold 4 through the air inlet 131, and then flows into the fuel cell stack for reaction; then, it passes through the first air outlet manifold 5 and the second air outlet manifold 6, and the air is discharged from the system through the air outlet 141; during this period, the temperature and pressure of the air entering and leaving the fuel cell stack are monitored by sensors to ensure the normal operation of the system.

[0034] Furthermore, an upper stack air inlet 132 is provided at one end of the first air intake manifold 3, and a lower stack air inlet 133 is provided at one end of the second air intake manifold 4, and the first air intake manifold 3 and the second air intake manifold 4 are connected through a first pipeline 7. When air enters the first air intake manifold 3 and the second air intake manifold 4 through the air inlet 131, it will be divided in the internal air distribution chamber 130, and then flow to the battery stack for electrochemical reaction; and an upper stack air outlet 142 is provided at one end of the first air outlet manifold 5, and a lower stack air outlet 143 is provided at one end of the second air outlet manifold 6, and the first air outlet manifold 5 and the second air outlet manifold 6 are connected through a second pipeline 8. After the air enters the first air intake manifold 3 and the second air intake manifold 4, it will merge in the internal air distribution chamber 130, and then flow out of the battery stack through the air outlet 141.

[0035] Specifically, the deflection angle of the air distribution chamber 130 of the first air intake manifold 3 and the second air intake manifold 4 in the vertical direction is 90°. The deflection angle of the air distribution chamber 130 of the first air outlet manifold 5 and the second air outlet manifold 6 in the vertical direction is 30°-60°. Through reasonable air flow distribution and design angle, it is possible to effectively prevent the problem of moisture accumulation when the wet air out of the stack flows through the internal air distribution chamber 130, ensuring the normal operation of the system.

[0036] Further, a first temperature sensor 9 and a first pressure sensor 10 are provided on one side of the second air intake manifold 4, and a second temperature sensor 11 and a second pressure sensor 12 are provided on one side of the second air outlet manifold 6. The first temperature sensor 9 and the second temperature sensor 11 are installed in a vertically upward or horizontal direction; the first pressure sensor 10 and the second pressure sensor 12 are installed in a vertically upward direction.

[0037] Working principle: air enters the air distribution chamber 130 from the air inlet 131, flows to the upper stack air inlet 132 and the lower stack air inlet 133 through the internal flow channel, and the first temperature sensor 9 and the first pressure sensor 10 are integrated on the second air intake manifold 4 of the lower stack to monitor the temperature and pressure of the air entering the stack to ensure the stability and safety of the system operation; the air flows out from the upper stack air outlet 142 and the lower stack air outlet 143, and re-enters the air distribution chamber 130, and finally converges to the air outlet 141 through the internal flow channel. The second temperature sensor 11 and the second pressure sensor 12 are also integrated on the second air outlet manifold 6 of the lower stack to realize real-time monitoring of the air outlet temperature and pressure.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-power fuel cell engine air inlet and outlet manifold structure, characterized in that: include: A fuel cell stack, the fuel cell stack being divided into an upper fuel cell stack (1) and a lower fuel cell stack (2), a manifold assembly being detachably mounted on one end surface of the fuel cell stack, the manifold assembly comprising a first air intake manifold (3), a second air intake manifold (4), a first air outlet manifold (5) and a second air outlet manifold (6); An air inlet (131) is provided at the lower portion of the second air intake manifold (4), and an air outlet (141) is provided at the lower portion of the second air outlet manifold (6). Air flows into the fuel cell stack from the first air intake manifold (3) and the second air intake manifold (4) through the air inlet (131), and then flows out from the first air outlet manifold (5) and the second air outlet manifold (6) through the air outlet (141), and the temperature and pressure of the air entering and leaving the stack are monitored by sensors.

2. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 1 is characterized in that: The manifold assembly is detachably mounted on one side of the fuel cell stack via a flange.

3. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 1 is characterized in that: The first air intake manifold (3) and the second air intake manifold (4) are connected via a first pipeline (7), and the first air outlet manifold (5) and the second air outlet manifold (6) are connected via a second pipeline (8).

4. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 1 is characterized in that: An upper stack air inlet (132) is provided at one end of the first air intake manifold (3), and a lower stack air inlet (133) is provided at one end of the second air intake manifold (4). Air enters the air distribution cavity (130) inside the first air intake manifold (3) and the second air intake manifold (4) through the air inlet (131) and flows into the fuel cell stack after being divided.

5. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 1 is characterized in that: An upper stack air outlet (142) is provided at one end of the first air outlet manifold (5), and a lower stack air outlet (143) is provided at one end of the second air outlet manifold (6). Air enters the air distribution cavity (130) inside the first air intake manifold (3) and the second air intake manifold (4), merges, and then flows out of the stack through the air outlet (141).

6. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 1 is characterized in that: A first temperature sensor (9) and a first pressure sensor (10) are arranged on one side of the second air intake manifold (4), and a second temperature sensor (11) and a second pressure sensor (12) are arranged on one side of the second air outlet manifold (6).

7. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 1 is characterized in that: The vertical deflection angle of the air distribution chamber (130) of the first air intake manifold (3) and the second air intake manifold (4) is 90°.

8. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 1 is characterized in that: The vertical deflection angle of the air distribution cavity (130) of the first air outlet manifold (5) and the second air outlet manifold (6) is 30°-60°.

9. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 6, characterized in that: The first temperature sensor (9) and the second temperature sensor (11) are installed in a vertically upward or horizontal direction.

10. The air inlet and outlet manifold structure of a high-power fuel cell engine according to claim 6, characterized in that: The first pressure sensor (10) and the second pressure sensor (12) are installed in a vertically upward direction.

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