CN218849530U

CN218849530U - Fuel cell engine humidifying system

Info

Publication number: CN218849530U
Application number: CN202222718516.2U
Authority: CN
Inventors: 王志永; 高建勋; 范成凯
Original assignee: Hunan Hejie New Energy Technology Co ltd; Tunghsu Technology Group Co Ltd
Current assignee: Hunan Hejie New Energy Technology Co ltd; Tunghsu Technology Group Co Ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-04-11
Anticipated expiration: 2032-10-14

Abstract

The present disclosure provides a fuel cell engine humidification system comprising: a first circulation line and a second circulation line, the first circulation line comprising: humidifier, first pipeline, battery stack and second pipeline, humidifier, first pipeline, battery stack and second pipeline end to end connection form closed circuit in proper order, and the flow direction in the first circulation pipeline begins for the self-humidifying ware, returns the humidifier behind first pipeline, battery stack and the second pipeline, and the second circulation pipeline includes: the two ends of the third pipeline are respectively communicated with the first pipeline and the second pipeline, the electric control ejector is arranged on the third pipeline and is communicated with the third pipeline, and the flowing direction of the third pipeline is from one end of the third pipeline connected with the second pipeline to one end of the third pipeline connected with the first pipeline; wherein the humidifier has an inlet and an outlet.

Description

Fuel cell engine humidifying system

Technical Field

The disclosure relates to the technical field of battery production, in particular to a fuel cell engine humidifying system.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by Carnot cycle effect, so the efficiency is high; in addition, fuel and oxygen are used as raw materials for the fuel cell, and mechanical transmission parts are not arranged, so that the discharged harmful gas is extremely little, and the service life is long.

In a fuel cell, the water content of a proton exchange membrane plays an important role in electrochemical reaction, and similar to the electrolyte of a traditional cell, when the water molecules in the membrane are too little, the membrane cannot conduct protons, the efficiency of the fuel cell is reduced, and even the fuel cell cannot work normally; when the water molecules in the membrane are excessive, the whole fuel cell system is flooded, and the fuel cell can not work normally. Therefore, the reactant gases entering the fuel cell stack must be humidified to ensure that the pem is properly saturated with water and maintain a high electrical conductivity, so that the fuel cell can operate at high efficiency.

The current fuel cell increases the air humidity by arranging a single humidifier to adjust the amount of water molecules in the membrane, but the adjustment mode by the single humidifier cannot meet the requirement of the amount of water molecules in the membrane under a large load.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a fuel cell engine humidification system, which solves a technical problem that: the humidifying system can meet the requirement of water molecular weight in the membrane under heavy load.

To solve the above technical problem, an embodiment of the present disclosure provides a fuel cell engine humidification system, including: a first circulation line and a second circulation line, the first circulation line comprising: humidifier, first pipeline, battery stack and second pipeline, humidifier, first pipeline, battery stack and second pipeline end to end connection form closed circuit in proper order, and the flow direction in the first circulation pipeline begins for the self-humidifying ware, returns the humidifier behind first pipeline, battery stack and the second pipeline, and the second circulation pipeline includes: the two ends of the third pipeline are respectively communicated with the first pipeline and the second pipeline, the electric control ejector is arranged on the third pipeline and is communicated with the third pipeline, and the flowing direction of the third pipeline is from one end of the third pipeline connected with the second pipeline to one end of the third pipeline connected with the first pipeline; wherein the humidifier has an inlet and an outlet.

In some embodiments, the second circulation line further comprises: a first intercooler and a first water pump; the first intercooler is arranged on the third pipeline and communicated with the third pipeline, and the first intercooler and the electric control ejector are distributed along the flowing direction of the third pipeline; the inlet of the first water pump is connected with the outlet of the first intercooler, and the outlet of the first water pump is connected with the inlet of the first intercooler.

In some embodiments, the second circulation line further comprises: a first pressure sensor; the first pressure sensor is arranged on the third pipeline and communicated with the third pipeline, and the electronic control ejector and the first pressure sensor are arranged along the flowing direction of the third pipeline.

In some embodiments, the first circulation line further comprises: a first throttle valve and a second throttle valve; the first throttle valve is arranged on the first pipeline and communicated with the first pipeline, and the first throttle valve is positioned between the position where the first pipeline is connected with the humidifier and the position where the first pipeline is connected with a third pipeline of the second circulating pipeline; the second throttle valve is arranged on the second pipeline and communicated with the second pipeline, and the second throttle valve is positioned between the position where the second pipeline is connected with the third pipeline and the position where the second pipeline is connected with the humidifier; the first pipeline between the position where the first pipeline is connected with the first throttle valve and the position where the first pipeline is connected with the third pipeline is provided with an opening.

In some embodiments, the first circulation line further comprises: a first temperature sensor and/or a second pressure sensor; the first temperature sensor is arranged on the first pipeline and communicated with the first pipeline, and the first temperature sensor is positioned between the opening and a position where the first pipeline is connected with the third pipeline; the second pressure sensor is arranged on the first pipeline and communicated with the first pipeline, and the second pressure sensor is positioned between the opening and the position where the first pipeline is connected with the third pipeline.

In some embodiments, the first circulation line further comprises: a first three-way valve; the first three-way valve is arranged on the second pipeline and communicated with the second pipeline, and the first three-way valve is positioned between the position where the second pipeline is connected with the cell stack and the position where the second pipeline is connected with the third pipeline; wherein the fuel cell engine humidification system further comprises: and the tail discharge pipe is respectively communicated with the outlet of the humidifier and the first three-way valve.

In some embodiments, the first circulation line further comprises: and the second temperature sensor is arranged on the second pipeline and communicated with the second pipeline, and is positioned between the position where the second pipeline is connected with the first three-way valve and the position where the second pipeline is connected with the third pipeline.

In some embodiments, the fuel cell engine humidification system may further comprise: and the second three-way valve is provided with a first connecting port, a second connecting port and a third connecting port, the second connecting port of the second three-way valve is connected with the inlet of the humidifier, and the third connecting port of the second three-way valve is connected with the opening.

In some embodiments, the fuel cell engine humidification system may further comprise: the outlet of the second intercooler is connected with a first connecting port of a second three-way valve, the inlet of a second water pump is connected with the outlet of the second intercooler, and the outlet of the second water pump is connected with the inlet of the second intercooler; the outlet of the air compressor is connected with the inlet of the second intercooler, and the inlet of the air compressor is used for entering air.

In some embodiments, the fuel cell engine humidification system may further comprise: and an outlet of the air flow meter is connected with an inlet of the air compressor, and an inlet of the air flow meter is used for entering air.

Through the technical scheme, the electronic control ejector is additionally arranged on the basis of the humidifier, so that the requirement of the water molecular quantity in the membrane of the cell stack under heavy load can be met through the cooperation of the humidifier and the electronic control ejector, and the manufacturing cost of the electronic control ejector is lower than that of the humidifier, so that the manufacturing cost of the fuel cell engine humidification system is lower in the embodiment compared with a mode that a second humidifier is additionally arranged on the basis of the humidifier.

The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and can be implemented according to the content of the specification, the following detailed description is given with reference to the preferred embodiments of the present application and the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic diagram of a fuel cell engine humidification system according to some embodiments of the present disclosure.

Description of reference numerals:

1. a humidifier; 2. a first conduit; 3. a cell stack; 4. a second conduit; 5. a third pipeline; 6. an electronically controlled ejector; 7. a first intercooler; 8. a first water pump; 9. a first pressure sensor; 10. a first throttle valve; 11. a second throttle valve; 12. a first temperature sensor; 13. a second pressure sensor; 14. a first three-way valve; 15. a tail pipe; 16. a second temperature sensor; 17. a second three-way valve; 18. a second intercooler; 19. a second water pump; 20. an air compressor; 21. an air flow meter.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are included to illustrate the principles of the disclosure, but are not intended to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but include all technical solutions falling within the scope of the claims.

These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of the components and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not restrictive, unless specifically stated otherwise.

It is noted that in the description of the present disclosure, unless otherwise indicated, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship merely to facilitate the description of the disclosure and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

Moreover, the use of "first," "second," and similar terms in this disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. "vertical" is not strictly vertical but is within the tolerance of the error. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises", and the like, means that the element preceding the word comprises the element listed after the word, and does not exclude the possibility that other elements may also be included.

It should also be noted that, in the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as appropriate to one of ordinary skill in the art. When a particular device is described as being between a first device and a second device, intervening devices may or may not be present between the particular device and the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

The present disclosure provides a fuel cell engine humidification system, as shown in fig. 1, the fuel cell engine humidification system includes: a first circulation line and a second circulation line. The first circulation line includes: the humidifier 1, the first pipeline 2, the battery stack 3 and the second pipeline 4 are sequentially connected end to form a closed loop, and the flow direction in the first circulation pipeline is from the humidifier 1, passes through the first pipeline 2, the battery stack 3 and the second pipeline 4 and then returns to the humidifier 1. The second circulation line includes: the device comprises a third pipeline 5 and an electronic control ejector 6, wherein two ends of the third pipeline 5 are respectively communicated with the first pipeline 2 and the second pipeline 4, the electronic control ejector 6 is arranged on the third pipeline 5 and is communicated with the third pipeline 5, and the flow direction of the third pipeline 5 is from one end of the third pipeline 5, which is connected with the second pipeline 4, to one end of the third pipeline 5, which is connected with the first pipeline 2; wherein the humidifier 1 has an inlet and an outlet.

Specifically, the humidifier 1 in the above is for increasing the humidity of gas, such as: after the air enters the humidifier 1 from the inlet of the humidifier 1, the humidifier 1 can humidify the air entering the humidifier 1, so that the content of water molecules in the air is increased. The stack 3 is a structure for generating an electrochemical reaction in the fuel cell, and residual gas after the electrochemical reaction in the stack 3, exhaust gas generated by the reaction, and water can be transported to the humidifier 1 through the second pipe 4, wherein the exhaust gas can be discharged through an outlet of the humidifier 1, and the water can supplement a water source required for humidification for the humidifier 1.

The flow direction in the first circulation pipeline is from the humidifier 1, and the air returns to the humidifier 1 through the first pipeline 2, the cell stack 3 and the second pipeline 4, that is, after the air entering the humidifier 1 is humidified, the air enters the cell stack 3 through the first pipeline 2 to perform an electrochemical reaction, and after the electrochemical reaction is completed, the generated water enters the humidifier 1 through the second pipeline 4 to supplement the water source required by the humidifier 1 for humidification.

The two ends of the third pipeline 5 are respectively communicated with the first pipeline 2 and the second pipeline 4, the electric control ejector 6 is arranged on the third pipeline 5 and is communicated with the third pipeline 5, and the flowing direction of the third pipeline 5 is that one end of the third pipeline 5, which is connected with the second pipeline 4, is connected with one end of the first pipeline 2 towards the third pipeline 5, that is, water in the second pipeline 4 and water sprayed into the third pipeline 5 by the electric control ejector 6 are mixed together and enter the first pipeline 2 to humidify air in the first pipeline 2, so that the air humidity entering the cell stack 3 is further adjusted.

In this embodiment, the electronic control injector 6 is additionally arranged on the basis of the humidifier 1, so that the requirement of the amount of water molecules in the membrane of the cell stack 3 under a large load can be met through the cooperation of the humidifier 1 and the electronic control injector 6, and the manufacturing cost of the electronic control injector 6 is lower than that of the humidifier 1, so that compared with a mode of additionally arranging a second humidifier 1 on the basis of the humidifier 1, the manufacturing cost of the fuel cell engine humidification system in this embodiment is lower.

In some embodiments, referring to fig. 1, the second circulation line further comprises: a first intercooler 7 and a first water pump 8. The first intercooler 7 is provided on the third pipe 5 and communicates with the third pipe 5, and the first intercooler 7 and the electronically controlled injector 6 are arranged in the flow direction of the third pipe 5. The inlet of the first water pump 8 is connected with the outlet of the first intercooler 7, and the outlet of the first water pump 8 is connected with the inlet of the first intercooler 7.

Specifically, the first intercooler 7 and the first water pump 8 cooperate to cool the water entering the third pipe 5. Here, the first water pump 8 may be connected with a heat dissipation structure to improve a cooling effect.

In some embodiments, referring to fig. 1, the second circulation line further comprises: a first pressure sensor 9. The first pressure sensor 9 is arranged on the third pipeline 5 and communicated with the third pipeline 5, and the electronic control injector 6 and the first pressure sensor 9 are arranged along the flowing direction of the third pipeline 5.

In particular, the first pressure sensor 9 can sense the pressure signal in the third pipe 5 and can convert the pressure signal into a usable output electric signal according to a certain rule. The above-mentioned electronic control injector 6 and the first pressure sensor 9 are arranged along the flow direction of the third pipeline 5, that is, the first pressure sensor 9 can acquire the pressure in the third pipeline 5 after passing through the electronic control injector 6.

In this embodiment, the first pressure sensor 9 can acquire the pressure in the third pipe 5 after passing through the electronic control injector 6, so that a worker can pay attention to the pressure in the third pipe 5 after passing through the electronic control injector 6 in real time, and the work of the humidification system of the fuel cell engine can be stopped or other settings can be adjusted when the pressure is abnormal, thereby reducing the risk of the failure of the humidification system.

In some embodiments, referring to fig. 1, the first circulation line further comprises: a first throttle valve 10 and a second throttle valve 11. The first damper 10 is provided on the first pipe 2 and communicates with the first pipe 2, and the first damper 10 is located between a position where the first pipe 2 is connected to the humidifier 1 and a position where the first pipe 2 is connected to the third pipe 5 of the second circulation line. The second throttle valve 11 is arranged on the second pipeline 4 and communicated with the second pipeline 4, and the second throttle valve 11 is positioned between the position where the second pipeline 4 is connected with the third pipeline 5 and the position where the second pipeline 4 is connected with the humidifier 1; wherein, the first pipeline 2 between the position where the first pipeline 2 is connected with the first throttle valve 10 and the position where the first pipeline 2 is connected with the third pipeline 5 is opened.

Specifically, when the first throttle valve 10 is opened, the channels in the first duct 2 on both sides of the first throttle valve 10 are communicated, so that the humidified air in the humidifier 1 can enter the cell stack 3 through the first duct 2; when the first throttle valve 10 is closed, the passages in the first duct 2 on both sides of the first throttle valve 10 are disconnected, so that the humidified air in the humidifier 1 cannot enter the cell stack 3 through the first duct 2.

When the second throttle valve 11 is opened, the passages in the second duct 4 on both sides of the second throttle valve 11 are communicated, so that the gas and water generated in the cell stack 3 can enter the humidifier 1 through the second duct 4, and when the second throttle valve 11 is closed, the passages in the second duct 4 on both sides of the second throttle valve 11 are disconnected, so that the gas and water generated in the cell stack 3 cannot enter the humidifier 1 through the second duct 4.

The opening in the above enables compressed air to be input to adjust the humidity of the air inside the first tube 2 without passing through the humidifier 1.

In specific implementation, when the humidity of the air entering the cell stack 3 needs to be reduced, the first throttle valve 10 and the second throttle valve 11 can be closed at the same time, so that the humidity of the air entering the cell stack 3 can be flexibly controlled.

In the embodiment, the humidity of the air entering the cell stack 3 can be flexibly controlled by controlling the opening states of the first throttle valve 10 and the second throttle valve 11, and when the first throttle valve 10 and the second throttle valve 11 are closed simultaneously, the humidifier 1 is disabled, and the electronic control injector 6 works, so that the fuel cell engine humidification system can adapt to the requirement of the water molecular weight in the membrane of the cell stack 3 under a small load.

In some embodiments, referring to fig. 1, the first circulation line further comprises: a first temperature sensor 12 and/or a second pressure sensor 13. The first temperature sensor 12 is disposed on the first pipe 2 and communicates with the first pipe 2, and the first temperature sensor 12 is located between the opening and a position where the first pipe 2 connects with the third pipe 5. The second pressure sensor 13 is arranged on the first pipe 2 and communicates with the first pipe 2, and the second pressure sensor 13 is located between the opening and the position where the first pipe 2 is connected to the third pipe 5.

Specifically, when the first temperature sensor 12 and the second pressure sensor 13 are provided at the same time, the first temperature sensor 12 and the second pressure sensor 13 are arranged in the flow direction of the first circulation line, or the second pressure sensor 13 and the first temperature sensor 12 are arranged in the flow direction of the first circulation line.

In the embodiment, the temperature of the air humidified by the humidifier 1 can be obtained through the first temperature sensor 12, so that a worker can adjust the system setting to enable the temperature of the humidified air to be within a preset range, and the probability of system damage caused by abnormal temperature of the humidified air can be reduced; the air pressure humidified by the humidifier 1 can be obtained by the second pressure sensor 13, so that a worker can adjust the system setting to make the air pressure humidified within a preset range, and the probability of system damage caused by abnormal air pressure humidified can be reduced.

In some embodiments, referring to fig. 1, the first circulation line further comprises: a first three-way valve 14; a first three-way valve 14 is arranged on the second pipeline 4 and communicated with the second pipeline 4, and the first three-way valve 14 is positioned between the position where the second pipeline 4 is connected with the cell stack 3 and the position where the second pipeline 4 is connected with the third pipeline 5; wherein the fuel cell engine humidification system further comprises: the tail discharge pipe 15 and the tail discharge pipe 15 are respectively communicated with the outlet of the humidifier 1 and the first three-way valve 14.

Specifically, the tail pipes 15 are used to exhaust excess gas in the system, and the gas may be excess air that does not participate in the electrochemical reaction or exhaust gas that participates in the electrochemical reaction. The first three-way valve 14 allows gas, water, and gas that does not participate in the electrochemical reaction in the cell stack 3 to be directly discharged through the tail pipe 15 after passing through the first three-way valve 14, and also to be discharged through the tail pipe 15 after passing through the first three-way valve 14 and the humidifier 1. Therefore, when the humidity of the air entering the cell stack 3 is too high, part or all of the gas and water can be directly discharged from the tail pipe 15 through the first three-way valve 14; when the humidity of the air entering the cell stack 3 is too low, the path of the first three-way valve 14 connected to the tail pipe 15 may be closed, so that all the water generated after the electrochemical reaction of the cell stack 3 enters the humidifier 1 to humidify the air in the humidifier 1.

In this embodiment, the first three-way valve 14 is connected to the tail pipe 15 to form a branch for discharging the gas after the electrochemical reaction in the cell stack 3, so that the residual gas and the generated water after the electrochemical reaction in part or all of the cell stack 3 can be directly discharged without passing through the humidifier 1, thereby facilitating the reduction of the control on the air humidity in the humidifier 1, and ensuring the mixing uniformity of the humidification through the adjustment of the first three-way valve 14.

In some embodiments, referring to fig. 1, the first circulation line further comprises: and a second temperature sensor 16, the second temperature sensor 16 being disposed on the second pipe 4 and communicating with the second pipe 4, and the second temperature sensor 16 being located between a position where the second pipe 4 is connected to the first three-way valve 14 and a position where the second pipe 4 is connected to the third pipe 5.

In this embodiment, the second temperature sensor 16 can acquire the temperature of the gas and the liquid after the electrochemical reaction of the cell stack 3, so that the staff can adjust the system setting to make the temperature of the gas and the liquid within a preset range, thereby reducing the probability of system damage caused by abnormal gas temperature.

In some embodiments, referring to fig. 1, the fuel cell engine humidification system can further comprise: and a second three-way valve 17, wherein the second three-way valve 17 has a first connection port, a second connection port, and a third connection port, the second connection port of the second three-way valve 17 is connected to the inlet of the humidifier 1, and the third connection port of the second three-way valve 17 is connected to the opening.

In particular, the first connection port may be connected to a compressed air storage tank to enable compressed air to enter the humidification system via the first connection port.

In this embodiment, the second three-way valve 17 enables the operator to control whether the gas entering the first connection port enters the humidifier 1 and the first pipe 2, or only enters the humidifier 1, or only enters the first pipe 2 according to the actual humidification requirement.

In some embodiments, referring to fig. 1, the fuel cell engine humidification system can further comprise: the system comprises a second intercooler 18, a second water pump 19 and an air compressor 20, wherein an outlet of the second intercooler 18 is connected with a first connector of a second three-way valve 17, an inlet of the second water pump 19 is connected with an outlet of the second intercooler 18, an outlet of the second water pump 19 is connected with an inlet of the second intercooler 18, an outlet of the air compressor 20 is connected with an inlet of the second intercooler 18, and an inlet of the air compressor 20 is used for allowing air to enter.

Specifically, the second intercooler 18 and the second water pump 19 are combined to cool the air in the second intercooler 18, where the second water pump 19 may be connected to a heat dissipation component to improve the cooling effect. The air compressor 20 in the above can compress air entering the air compressor 20.

In some embodiments, referring to fig. 1, the fuel cell engine humidification system can further comprise: and an air flow meter 21, wherein the outlet of the air flow meter 21 is connected with the inlet of the air compressor 20, and the inlet of the air flow meter 21 is used for entering air. Here, the air flow meter 21 is provided so that the worker can acquire the air flow rate entering the humidification system in real time to enable control of the air flow rate according to actual demand.

The present disclosure provides a fuel cell engine humidification system, as shown in fig. 1, the system comprising: the system comprises a first circulating pipeline, a second circulating pipeline, a tail exhaust pipe 15, a second three-way valve 17, a second intercooler 18, a second water pump 19, an air compressor 20 and an air flow meter 21.

The first circulation line includes: the fuel cell system comprises a humidifier 1, a first pipeline 2, a cell stack 3, a second pipeline 4, a first throttle valve 10, a second throttle valve 11, a first temperature sensor 12, a second pressure sensor 13, a first three-way valve 14 and a second temperature sensor 16. The humidifier 1, the first pipeline 2, the battery stack 3 and the second pipeline 4 are sequentially connected end to form a closed loop, and the flow direction in the first circulation pipeline is from the humidifier 1, and returns to the humidifier 1 after passing through the first pipeline 2, the battery stack 3 and the second pipeline 4. The first throttle valve 10, the first temperature sensor 12 and the second pressure sensor 13 are all arranged on the first pipeline 2 and are respectively communicated with the first pipeline 2, and the first throttle valve 10, the first temperature sensor 12 and the second pressure sensor 13 are sequentially arranged along the flowing direction of the first pipeline 2. The first three-way valve 14, the second temperature sensor 16 and the second throttle valve 11 are all arranged on the second pipeline 4 and are respectively communicated with the second pipeline 4, and the first three-way valve 14, the second temperature sensor 16 and the second throttle valve 11 are sequentially arranged along the flowing direction of the second pipeline 4. Wherein an opening is provided at a position between a position where the first duct 2 connects the first throttle valve 10 and a position where the first duct 2 connects the first temperature sensor 12.

The second circulation line includes: third pipeline 5, automatically controlled sprayer 6, first intercooler 7, first water pump 8 and first pressure sensor 9. The two ends of the third pipeline 5 are respectively communicated with the first pipeline 2 and the second pipeline 4, the position of the third pipeline 5 connected with the first pipeline 2 is between the position of the first pipeline 2 connected with the second pressure sensor 13 and the position of the first pipeline 2 connected with the battery stack 3, the position of the third pipeline 5 connected with the second pipeline 4 is between the second pipeline 4 connected with the second temperature sensor 16 and the second throttle valve 11, and the flowing direction of the third pipeline 5 is from one end of the third pipeline 5 connected with the second pipeline 4 to one end of the third pipeline 5 connected with the first pipeline 2. First intercooler 7, automatically controlled sprayer 6 and first pressure sensor 9 all set up on third pipeline 5 and communicate with third pipeline 5 respectively, the exit linkage of the import of first water pump 8 and first intercooler 7, the export of first water pump 8 and the exit linkage of first intercooler 7.

The tail discharge pipe 15 is respectively connected with the first three-way valve 14 and the outlet of the humidifier 1.

The second three-way valve 17 has a first connection port, a second connection port, and a third connection port, the second connection port of the second three-way valve 17 is connected to the inlet of the humidifier 1, and the third connection port of the second three-way valve 17 is connected to the opening.

An outlet of the second intercooler 18 is connected with a first connecting port of the second three-way valve 17, an inlet of the second water pump 19 is connected with an outlet of the second intercooler 18, an outlet of the second water pump 19 is connected with an inlet of the second intercooler 18, an outlet of the air compressor 20 is connected with an inlet of the second intercooler 18, and an inlet of the air compressor 20 is used for air entering.

The outlet of the air flow meter 21 is connected to the inlet of the air compressor 20, and the inlet of the air flow meter 21 is used for the intake air.

In specific implementation, the first pressure sensor 9, the first temperature sensor 12, the second pressure sensor 13, the second temperature sensor 16 and the air flow meter 21 may be connected to an input end of the fuel cell controller by means of a wire harness, and the electronically controlled injector 6, the first throttle valve 10, the second throttle valve 11, the first three-way valve 14 and the second three-way valve 17 may be connected to an output end of the fuel cell controller by means of a wire harness. Accordingly, the electronically controlled injector 6, the first throttle valve 10, the second throttle valve 11, the first three-way valve 14, and the second three-way valve 17 can be controlled by the fuel cell controller based on the information acquired by the first pressure sensor 9, the first temperature sensor 12, the second pressure sensor 13, the second temperature sensor 16, and the air flow meter 21, respectively, to ensure stable operation of the humidification system.

In this embodiment, the electronic control injector 6 can be directly involved in the high-power fuel cell engine under a large load, that is, the humidifier 1 and the electronic control injector 6 work simultaneously, so as to greatly increase the humidity of the air entering the cell stack 3; in addition, the humidification system is also suitable for stop scavenging through the first three-way valve 14 and the second three-way valve 17, thereby increasing the application range of the humidification system.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein, in view of the foregoing description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict.

Claims

1. A fuel cell engine humidification system comprising:

a first circulation line, the first circulation line comprising: the fuel cell system comprises a humidifier (1), a first pipeline (2), a cell stack (3) and a second pipeline (4), wherein the humidifier (1), the first pipeline (2), the cell stack (3) and the second pipeline (4) are sequentially connected end to form a closed loop, and the flow direction in the first circulation pipeline is from the humidifier (1) and returns to the humidifier (1) after passing through the first pipeline (2), the cell stack (3) and the second pipeline (4); and the combination of (a) and (b),

a second circulation line comprising: the two ends of the third pipeline (5) are respectively communicated with the first pipeline (2) and the second pipeline (4), the electronic control ejector (6) is arranged on the third pipeline (5) and is communicated with the third pipeline (5), and the flow direction of the third pipeline (5) is from one end of the third pipeline (5) connected with the second pipeline (4) to one end of the third pipeline (5) connected with the first pipeline (2);

wherein the humidifier (1) has an inlet and an outlet.

2. The fuel cell engine humidification system of claim 1,

the second circulation line further includes: a first intercooler (7) and a first water pump (8);

the first intercooler (7) is arranged on the third pipeline (5) and communicated with the third pipeline (5), and the first intercooler (7) and the electric control ejector (6) are arranged along the flowing direction of the third pipeline (5);

the inlet of the first water pump (8) is connected with the outlet of the first intercooler (7), and the outlet of the first water pump (8) is connected with the inlet of the first intercooler (7).

3. The fuel cell engine humidification system of claim 2,

the second circulation line further includes: a first pressure sensor (9);

the first pressure sensor (9) is arranged on the third pipeline (5) and communicated with the third pipeline (5), and the electronic control ejector (6) and the first pressure sensor (9) are arranged along the flowing direction of the third pipeline (5).

4. The fuel cell engine humidification system of any of claims 1-3,

the first circulation line further includes: a first throttle valve (10) and a second throttle valve (11);

the first throttle valve (10) is arranged on the first pipeline (2) and is communicated with the first pipeline (2), and the first throttle valve (10) is positioned between the position where the first pipeline (2) is connected with the humidifier (1) and the position where the first pipeline (2) is connected with a third pipeline (5) of the second circulation pipeline;

the second throttle valve (11) is arranged on the second pipeline (4) and is communicated with the second pipeline (4), and the second throttle valve (11) is positioned between the position where the second pipeline (4) is connected with the third pipeline (5) and the position where the second pipeline (4) is connected with the humidifier (1);

wherein the first pipeline (2) between the position where the first pipeline (2) is connected with the first throttle valve (10) and the position where the first pipeline (2) is connected with the third pipeline (5) is provided with an opening.

5. The fuel cell engine humidification system of claim 4,

the first circulation line further includes: a first temperature sensor (12) and/or a second pressure sensor (13);

the first temperature sensor (12) is arranged on the first pipeline (2) and communicated with the first pipeline (2), and the first temperature sensor (12) is positioned between the opening and the position where the first pipeline (2) is connected with the third pipeline (5);

the second pressure sensor (13) is arranged on the first pipeline (2) and is communicated with the first pipeline (2), and the second pressure sensor (13) is positioned between the opening and the position where the first pipeline (2) is connected with the third pipeline (5).

6. The fuel cell engine humidification system of claim 4,

the first circulation line further includes: a first three-way valve (14);

the first three-way valve (14) is arranged on the second pipeline (4) and is communicated with the second pipeline (4), and the first three-way valve (14) is positioned between the position where the second pipeline (4) is connected with the cell stack (3) and the position where the second pipeline (4) is connected with the third pipeline (5);

wherein the fuel cell engine humidification system further comprises: and the tail discharge pipe (15), the tail discharge pipe (15) is respectively communicated with the outlet of the humidifier (1) and the first three-way valve (14).

7. The fuel cell engine humidification system of claim 6,

the first circulation line further includes: a second temperature sensor (16), the second temperature sensor (16) is disposed on the second pipeline (4) and is communicated with the second pipeline (4), and the second temperature sensor (16) is located between a position where the second pipeline (4) is connected with the first three-way valve (14) and a position where the second pipeline (4) is connected with the third pipeline (5).

8. The fuel cell engine humidification system of claim 4, further comprising:

and the second three-way valve (17) is provided with a first connecting port, a second connecting port and a third connecting port, the second connecting port of the second three-way valve (17) is connected with the inlet of the humidifier (1), and the third connecting port of the second three-way valve (17) is connected with the opening.

9. The fuel cell engine humidification system of claim 8, further comprising:

an outlet of the second intercooler (18) is connected with a first connecting port of the second three-way valve (17);

a second water pump (19), wherein an inlet of the second water pump (19) is connected with an outlet of the second intercooler (18), and an outlet of the second water pump (19) is connected with an inlet of the second intercooler (18); and (c) and (d),

an outlet of the air compressor (20) is connected with an inlet of the second intercooler (18), and an inlet of the air compressor (20) is used for air entering.

10. The fuel cell engine humidification system of claim 9, further comprising:

an outlet of the air flow meter (21) is connected with an inlet of the air compressor (20), and an inlet of the air flow meter (21) is used for entering air.