Multifunctional integrated manifold structure

Abstract

The multifunctional integrated manifold structure comprises a first manifold and a second manifold which are installed on an electric pile end plate, a first mixed air port, a first cooling liquid port and a first hydrogen port which are connected to the electric pile end plate in a sealed mode are formed in the first manifold, and a second mixed air port, a second cooling liquid port and a second hydrogen port which are connected to the electric pile end plate in a sealed mode are formed in the second manifold. The first mixed air port and the first cooling liquid port are provided with an air inlet temperature sensor and a cooling inlet temperature pressure sensor respectively, the first mixed air port is communicated with the combination of the dry air inlet and the wet air inlet, the first cooling liquid port is communicated with the cooling inlet, and the first hydrogen port is communicated with the hydrogen outlet. According to the utility model, a plurality of functional parts are integrated, the overall integration level of the fuel cell system is improved, the fuel cell system has a fluid distribution function and complete functions, and meanwhile, the pressure and temperature monitoring function is realized.

Description

Technical Field

[0001] The present application relates to a fuel cell, and in particular to a multifunctional integrated manifold structure. Background Art

[0002] Manifold: Mainly used as a medium interface. The hydrogen, air and coolant required by the fuel cell stack flow through the manifold assembly into the fuel cell stack. At the same time, the hydrogen, air and coolant that have participated in the reaction flow through the manifold assembly back to the fuel cell stack.

[0003] Air start: refers specifically to starting the fuel cell system when there is no fuel supply or insufficient fuel in the fuel cell system, which will result in damage to the fuel cell stack and shorten the life of the fuel cell.

[0004] In the existing technical solutions:

[0005] 1. In the fuel cell system, the throttle, temperature sensor, and pressure sensor exist separately, and the manifold structure and function are relatively simple, which is very unfavorable to improving the overall integration of the fuel cell system.

[0006] 2. There is a long section of pipeline between the front end of the manifold air intake channel inlet and the rear end of the air exhaust channel outlet in the fuel cell system. After the fuel cell system is shut down, there is a large amount of air inside, which causes an empty start when the system is started, damaging the fuel cell stack and reducing the service life of the fuel cell. Utility Model Content

[0007] The purpose of the present invention is to provide a multifunctional integrated manifold structure that integrates multiple functional parts, improves the overall integration of the fuel cell system, has a fluid distribution function, is fully functional, and simultaneously realizes the pressure and temperature monitoring function.

[0008] In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions.

[0009] The embodiment of the present application discloses a multifunctional integrated manifold structure, comprising a first manifold and a second manifold mounted on an end plate of a fuel cell stack.

[0010] The first manifold is formed with a first mixed air port, a first coolant port, and a first hydrogen port that are sealed and connected to the stack end plate. The first mixed air port and the first coolant port are respectively provided with an air inlet temperature sensor and a coolant inlet temperature and pressure sensor. The first mixed air port is connected to the junction of the dry air inlet and the wet air inlet, the first coolant port is connected to the cooling inlet, and the first hydrogen port is connected to the hydrogen outlet.

[0011] The second manifold is provided with a second wet air port, a second coolant port, and a second hydrogen port which are sealed and connected to the stack end plate. The second wet air port, the second coolant port, and the second hydrogen port are respectively provided with an air outlet temperature sensor, a cooling outlet temperature and pressure sensor, and a hydrogen inlet temperature and pressure sensor. The second wet air port is connected to the wet air outlet, the second coolant port is connected to the cooling outlet, and the second hydrogen port is connected to the hydrogen inlet.

[0012] Preferably, in the above-mentioned multifunctional integrated manifold structure, a dry air throttle is provided at the dry air inlet.

[0013] Preferably, in the above-mentioned multifunctional integrated manifold structure, a moisture throttle is provided at the wet air inlet.

[0014] Preferably, in the above-mentioned multifunctional integrated manifold structure, an air outlet throttle is provided at the wet air outlet.

[0015] Preferably, in the above-mentioned multifunctional integrated manifold structure, the first manifold and the second manifold are fixed to the stack end plate through sealing gaskets and bolts.

[0016] Compared with the existing technology, the utility model integrates a temperature and pressure integrated sensor on the manifold to monitor and regulate the temperature and pressure of the air, hydrogen and cooling channel media of the fuel cell system in real time, ensuring the stable operation of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Shown is an installation diagram of a multifunctional integrated manifold structure in an embodiment of the present utility model;

[0019] Figure 2 Shown is a perspective view of the first manifold in an embodiment of the present utility model;

[0020] Figure 3 Shown is a three-dimensional view of the second manifold in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following is a detailed description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Combine Figure 1-3 As shown, the multifunctional integrated manifold structure includes a first manifold 100 and a second manifold 200 installed on the stack end plate 300.

[0023] The first manifold 100 is formed with a first mixed air port 101, a first coolant port 102, and a first hydrogen port 103 that are sealed and connected to the stack end plate 300. The first mixed air port 101 and the first coolant port 102 are respectively provided with an air inlet temperature sensor 104 and a coolant inlet temperature and pressure sensor 105. The first mixed air port 101 is connected to the combined dry air inlet 106 and the wet air inlet 107. The first coolant port 102 is connected to the cooling inlet 108. The first hydrogen port 103 is connected to the hydrogen outlet 109.

[0024] The second manifold 200 is provided with a second wet air port 201, a second coolant port 202, and a second hydrogen port 203 which are sealed and connected to the stack end plate 300. The second wet air port 201, the second coolant port 202, and the second hydrogen port 203 are respectively provided with an air outlet temperature sensor 204, a cooling outlet temperature and pressure sensor 205, and a hydrogen inlet temperature and pressure sensor 206. The second wet air port 201 is connected to the wet air outlet 207, the second coolant port 202 is connected to the cooling outlet 208, and the second hydrogen port 203 is connected to the hydrogen inlet 209.

[0025] A dry air throttle valve 110 is provided at the dry air inlet 106. A wet air throttle valve 111 is provided at the wet air inlet 107. An air outlet throttle valve 210 is provided at the wet air outlet 207. The first manifold 100 and the second manifold 200 are fixed to the stack end plate 300 via sealing gaskets and bolts.

[0026] During specific use, the manifolds 1 and 2 are fixedly mounted on the end plates of the fuel cell stack through their own sealing structure in combination with O-ring seals and standard bolts to achieve installation and sealing of the manifolds and the end plates of the fuel cell stack. When the fuel cell system is started, air and coolant enter the fuel cell stack through the dry air inlet, wet air inlet and cooling inlet in the manifold 1, wherein the air inlet temperature and pressure sensor monitors the temperature and pressure of the air entering the fuel cell stack in real time, and the cooling inlet temperature and pressure sensor monitors the temperature and pressure of the coolant entering the fuel cell stack in real time; wherein the wet air throttle and dry air throttle in the manifold 1 can adjust the ratio of dry and wet air mixed into the fuel cell stack according to the actual working conditions of the fuel cell system to ensure stable operation of the fuel cell system; hydrogen enters the fuel cell stack through the hydrogen inlet in the manifold 2, wherein the hydrogen inlet temperature and pressure sensor monitors the temperature and pressure of the hydrogen entering the fuel cell stack in real time; the exhaust gas, excess air and coolant after heat exchange generated by the operation of the fuel cell system are discharged through the wet air outlet and cooling outlet in the manifold 2, wherein the air outlet temperature and pressure sensor monitors the temperature and pressure of the exhaust gas at the fuel cell stack outlet in real time, and the cooling outlet temperature and pressure sensor monitors the temperature and pressure of the coolant at the fuel cell stack outlet in real time; hydrogen enters the fuel cell system through the hydrogen outlet in the manifold 1 for hydrogen recovery and reuse. When the fuel cell system is shut down for purging, the wet air throttle and dry air throttle in manifold 1 and the air throttle in manifold 2 are closed synchronously to ensure the sealing of the air channel of the fuel cell system. After the fuel cell system is shut down, no air will enter the stack, avoiding the problem of empty start when the fuel cell system is restarted.

[0027] In this technical solution,

[0028] 1. The throttle and temperature and pressure integrated sensor are integrated into the manifold, which increases the manifold's function of monitoring the medium temperature and pressure and controlling the dry and wet air intake volume, and effectively improves the manifold's integration. It has the multifunctionality of monitoring the temperature and pressure of the air, hydrogen, and cooling channel media and controlling and regulating the dry and wet gas intake volume of the air path, reducing the overall volume of the manifold, which is conducive to improving the overall integration of the fuel cell system and conforms to the current development trend of integration and modularization.

[0029] 2. The length of the fuel cell system air channel pipeline is reduced, the sealing of the manifold air channel inlet and outlet is improved, and the problem of dry starting is avoided.

[0030] 3. Reduce the gas pressure loss in the air channel, control and adjust the dry and wet air mixed intake volume, and simplify the air intake structure.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0032] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A multifunctional integrated manifold structure, characterized in that: It includes a first manifold and a second manifold installed on the end plate of the fuel cell stack, The first manifold is formed with a first mixed air port, a first coolant port, and a first hydrogen port that are sealed and connected to the stack end plate. The first mixed air port and the first coolant port are respectively provided with an air inlet temperature sensor and a coolant inlet temperature and pressure sensor. The first mixed air port is connected to the junction of the dry air inlet and the wet air inlet, the first coolant port is connected to the cooling inlet, and the first hydrogen port is connected to the hydrogen outlet. The second manifold is provided with a second wet air port, a second coolant port, and a second hydrogen port which are sealed and connected to the stack end plate. The second wet air port, the second coolant port, and the second hydrogen port are respectively provided with an air outlet temperature sensor, a cooling outlet temperature and pressure sensor, and a hydrogen inlet temperature and pressure sensor. The second wet air port is connected to the wet air outlet, the second coolant port is connected to the cooling outlet, and the second hydrogen port is connected to the hydrogen inlet.

2. The multifunctional integrated manifold structure according to claim 1, characterized in that: A dry air throttle is provided at the dry air inlet.

3. The multifunctional integrated manifold structure according to claim 1, characterized in that: A wet air throttle is provided at the wet air inlet.

4. The multifunctional integrated manifold structure according to claim 1, characterized in that: An air outlet throttle is provided at the wet air outlet.

5. The multifunctional integrated manifold structure according to claim 1, characterized in that: The first manifold and the second manifold are fixed to the stack end plate through sealing gaskets and bolts.

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