CN217522061U - Fuel cell humidifier and fuel cell system - Google Patents
Fuel cell humidifier and fuel cell system Download PDFInfo
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- CN217522061U CN217522061U CN202221116342.6U CN202221116342U CN217522061U CN 217522061 U CN217522061 U CN 217522061U CN 202221116342 U CN202221116342 U CN 202221116342U CN 217522061 U CN217522061 U CN 217522061U
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- fuel cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model provides a fuel cell humidifier and fuel cell system relates to fuel cell system's technical field. The fuel cell humidifier comprises a humidifier shell, wherein a dry inlet and a dry outlet are respectively arranged at two ends of the humidifier shell, a humidifying cavity which is hermetically arranged is arranged in the humidifier shell, and a wet inlet and a wet outlet which are respectively communicated with the humidifying cavity are arranged on the humidifier shell; the humidifying core is arranged in the humidifying cavity, and two ends of the humidifying core are respectively communicated with the dry inlet and the dry outlet; the gas-water separation membrane is arranged on the humidifying core body in a cylindrical surrounding manner, and one end of the gas-water separation membrane is connected with the side wall of the humidifying cavity close to the wet outlet, so that moisture is discharged from the wet outlet after passing through the gas-water separation membrane; the bottom of the gas-water separation membrane is provided with a water through hole. The fuel cell system includes a system frame and a fuel cell humidifier; the fuel cell humidifier is provided on the system frame. The technical effect that the humidifier has a gas-liquid separation function is achieved.
Description
Technical Field
The utility model relates to a fuel cell technical field particularly, relates to fuel cell humidifier and fuel cell system.
Background
In an air system of a vehicle fuel cell, air entering a galvanic pile and participating in reaction needs to be humidified, the air discharged after the galvanic pile is reacted is in a high-temperature high-humidity state and has high pressure, and in order to improve the energy utilization rate of the fuel cell system, the air discharged after the galvanic pile reaction enters a humidifier to humidify dry air entering the galvanic pile, and then the air discharged after the galvanic pile reaction enters an energy recovery device to recover energy.
However, in the prior art, an additional gas-liquid separator is required to separate gas and liquid from the moisture discharged from the humidifier, and if the gas-liquid separator is not externally connected to the humidifier, the moisture containing liquid water may flow from the output flow passage of the humidifier to the energy recovery unit at the rear end, and once the liquid water enters the energy recovery unit, the moisture may directly cause irreversible damage to the turbine component inside the energy recovery unit, thereby reducing the service life. However, the external gas-liquid separator increases the volume and mass of the system assembly, decreases the volumetric power density and the mass power density of the system, and increases the system cost.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a fuel cell humidifier and a fuel cell system having a gas-liquid separation function.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fuel cell humidifier and fuel cell system to alleviate the technical problem that the humidifier does not have the gas-liquid separation function among the prior art.
In a first aspect, an embodiment of the present invention provides a fuel cell humidifier, including:
the humidifier comprises a humidifier shell, a humidifier body and a humidifier body, wherein a dry inlet and a dry outlet are respectively arranged at two ends of the humidifier shell, a humidifying cavity is hermetically arranged in the humidifier shell, and a wet inlet and a wet outlet which are respectively communicated with the humidifying cavity are arranged on the humidifier shell;
the humidifying core body is arranged in the humidifying cavity, and two ends of the humidifying core body are respectively communicated with the dry inlet and the dry outlet;
the gas-water separation membrane is arranged on the humidifying core body in a cylindrical surrounding manner, and one end of the gas-water separation membrane is connected with the side wall, close to the wet outlet, of the humidifying cavity, so that moisture is discharged from the wet outlet after passing through the gas-water separation membrane;
the bottom of the gas-water separation membrane is provided with a water through hole.
With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein a first sealing support is disposed between the dry inlet and the humidification chamber, and a second sealing support is disposed between the dry outlet and the humidification chamber;
the humidifying core body is a hollow fiber membrane tube, one end of the hollow fiber membrane tube is communicated with the dry inlet through the first sealing support piece, and the other end of the hollow fiber membrane tube is communicated with the dry outlet through the second sealing support piece.
With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the fuel cell humidifier further includes a flow guide ring plate;
one end of the gas-water separation membrane is connected with the first sealing support piece;
the outer edge of the flow guide ring plate is connected with the inner wall of the humidifying cavity, and the inner edge of the flow guide ring plate is connected with one end, far away from the first sealing support piece, of the gas-water separation membrane.
With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the humidification chamber includes a wet inlet chamber and a wet outlet chamber that are communicated with each other;
the wet-in chamber and the wet-out chamber are both disposed between the first seal support and the second seal support, and the wet-out chamber is located between the wet-in chamber and the first seal support;
the gas-water separation membrane and the guide ring plate are both arranged in the wet outlet cavity.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a support for supporting the gas-water separation membrane is disposed in the wet outlet cavity.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein a water outlet is disposed at a bottom of the wet outlet chamber.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the gas-water separation membrane is a PTFE gas-permeable hydrophobic membrane.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the humidifier housing is provided with a dry inlet chamber communicated with the dry inlet and a dry outlet chamber communicated with the dry outlet.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the humidifier housing is located on the inlet and the outlet, and an end cover is provided on the end cover, and the end cover and the humidifier housing form a dry inlet cavity communicated with the inlet and a dry outlet cavity communicated with the outlet.
In a second aspect, embodiments of the present invention provide a fuel cell system, including a system frame and the fuel cell humidifier;
the fuel cell humidifier is disposed on the system frame.
Has the beneficial effects that:
the utility model provides a fuel cell humidifier, include: the humidifier comprises a humidifier shell, a humidifier body and a humidifier cover, wherein a dry inlet and a dry outlet are respectively arranged at two ends of the humidifier shell, a humidifying cavity is hermetically arranged in the humidifier shell, and a wet inlet and a wet outlet which are respectively communicated with the humidifying cavity are arranged on the humidifier shell; the humidifying core body is arranged in the humidifying cavity, and two ends of the humidifying core body are respectively communicated with the dry inlet and the dry outlet; the gas-water separation membrane is arranged on the humidifying core body in a cylindrical surrounding manner, and one end of the gas-water separation membrane is connected with the side wall of the humidifying cavity close to the wet outlet, so that moisture is discharged from the wet outlet after passing through the gas-water separation membrane; the bottom of the gas-water separation membrane is provided with a water through hole.
Specifically, dry air to be humidified can enter the humidification core body from the dry inlet, and then is discharged from the dry outlet along the humidification core body and enters the galvanic pile; moisture discharged from the galvanic pile enters the humidifying cavity from the wet inlet, then the moisture is diffused on the humidifying core body, the outer wall of the membrane tube of the humidifying core body absorbs the moisture in the moisture and then reaches the inner wall of the membrane tube through mass transfer, and dry air takes away the moisture on the inner wall of the membrane tube when passing through the humidifying core body, so that the dry air is humidified. In addition, the moisture in the humidification cavity flows along the humidification cavity, the moisture can flow into the cylindrical gas-water separation membrane, then under the action of air pressure, the gas in the moisture can pass through the gas-water separation membrane and then is discharged from the wet outlet, and the residual liquid can flow downwards and then flows into the humidification cavity through the water through hole at the bottom of the gas-water separation membrane. By such an arrangement, the gas flowing to the subsequent energy recovery unit is free of liquid, thereby avoiding damage to the turbine of the energy recovery unit. Through the arrangement, the gas-liquid separator does not need to be additionally arranged, so that the volume and the mass of a system assembly are not increased, the volume power density and the mass power density of the system are not reduced, and the system cost is not increased.
The utility model provides a fuel cell system, which comprises a system frame and a fuel cell humidifier; the fuel cell humidifier is provided on the system frame. The fuel cell system has the above-described advantages over the prior art and will not be described herein in detail.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a fuel cell humidifier according to an embodiment of the present invention;
fig. 2 is a cross-sectional view a-a of fig. 1.
Icon:
100-a humidifier housing; 101-a first seal support; 102-a second seal support; 103-dry inlet; 104-wet outlet; 105-wet inlet; 106-dry outlet; 107-water outlet; 110-dry into the cavity; 120-a humidification chamber; 121-wet in cavity; 122-wet outlet chamber; 130-drying out the cavity;
200-a humidifying core;
300-gas-water separation membrane; 310-water through holes; 320-a guide ring plate;
400-air outlet direction.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1 and 2, the present embodiment provides a fuel cell humidifier including: the humidifier comprises a humidifier shell 100, wherein a dry inlet 103 and a dry outlet 106 are respectively arranged at two ends of the humidifier shell 100, a humidifying cavity 120 which is hermetically arranged is arranged in the humidifier shell 100, and a wet inlet 105 and a wet outlet 104 which are respectively communicated with the humidifying cavity 120 are arranged on the humidifier shell 100; the humidifying wick 200 is arranged in the humidifying cavity 120, and two ends of the humidifying wick 200 are respectively communicated with the dry inlet 103 and the dry outlet 106; the gas-water separation membrane 300, the gas-water separation membrane 300 is arranged on the humidifying core 200 in a cylindrical shape, and one end of the gas-water separation membrane 300 is connected with the side wall of the humidifying cavity 120 close to the wet outlet 104, so that the moisture is discharged from the wet outlet 104 after passing through the gas-water separation membrane 300; the gas-water separation membrane 300 has a water hole 310 formed in the bottom thereof.
Specifically, dry air to be humidified can enter the humidifying core 200 from the dry inlet 103, and then is discharged from the dry outlet 106 along the humidifying core 200 and enters the stack; moisture discharged from the stack enters the humidification chamber 120 from the wet inlet 105, then the moisture is diffused on the humidification wick 200, the outer wall of the membrane tube of the humidification wick 200 absorbs the moisture in the moisture and then reaches the inner wall of the membrane tube through mass transfer, and the dry air takes away the moisture on the inner wall of the membrane tube when passing through the humidification wick 200, so as to humidify the dry air. In addition, the moisture in the humidification chamber 120 flows along the humidification chamber 120, the moisture can flow into the cylindrical moisture-water separation membrane 300, then the gas in the moisture can pass through the moisture-water separation membrane 300 in the air outlet direction 400 and then be discharged from the wet outlet 104 under the action of air pressure, and the residual liquid can flow downwards and then flow into the humidification chamber 120 through the water through hole 310 at the bottom of the moisture-water separation membrane 300. By this arrangement, the gas flowing to the subsequent energy recovery unit is free of liquid, so that damage to the turbine of the energy recovery unit is avoided. Through the arrangement, the gas-liquid separator is not required to be additionally arranged, so that the volume and the mass of a system assembly are not increased, the volume power density and the mass power density of the system are not reduced, and the system cost is not increased.
Specifically, the gas-liquid separation treatment is performed on the moisture by the gas-water separation membrane 300, so that the gas can penetrate the gas-water separation membrane 300 and the liquid can be separated.
It should also be noted that in actual operation, the air discharged from the wet outlet 104 of the humidifier contains no liquid, is at a high temperature, and has a high pressure, so that when passing through the turbine of the energy recovery device, the turbine can be driven to recover energy, and the turbine can compress the gas during rotation of the turbine, so that the turbine is not damaged.
A drain port 107 is provided at the bottom of the humidifier case 100.
The humidifier housing 100 is provided with a dry inlet chamber 110 communicated with the dry inlet 103 and a dry outlet chamber 130 communicated with the dry outlet 106.
Alternatively, end caps are provided on the humidifier housing 100 at the dry inlet 103 and dry outlet 106, which form with the humidifier housing 100 a dry inlet chamber 110 in communication with the dry inlet 103 and a dry outlet chamber 130 in communication with the dry outlet 106.
Referring to fig. 1 and 2, in an alternative of the present embodiment, a first sealing support 101 is provided between the dry inlet 103 and the humidification chamber 120, and a second sealing support 102 is provided between the dry outlet 106 and the humidification chamber 120; the humidifying core 200 is a hollow fiber membrane tube, one end of which is communicated with the dry inlet 103 through a first sealing support 101, and the other end is communicated with the dry outlet 106 through a second sealing support 102.
Specifically, the first seal holder 101, the second seal holder 102 and the humidifier housing 100 enclose the humidification chamber 120.
Specifically, the humidifying core 200 is supported by the first seal support 101 and the second seal support 102, and the humidifying chamber 120 is separated from both the dry-in chamber 110 and the dry-out chamber 130 by both the first seal support 101 and the second seal support 102, so that moisture is prevented from directly entering into the dry-in chamber 110 or the dry-out chamber 130.
Referring to fig. 1 and 2, in an alternative of the present embodiment, the fuel cell humidifier further includes a baffle plate 320; one end of the gas-water separation membrane 300 is connected with the first sealing support 101; the outer edge of the baffle ring 320 is connected to the inner wall of the humidification chamber 120, and the inner edge of the baffle ring 320 is connected to the end of the gas-water separation membrane 300 away from the first sealing support 101.
Specifically, the inner edge of the flow guide ring plate 320 is connected to the end of the gas-water separation membrane 300 away from the first sealing support 101, the outer edge is connected to the inner wall of the humidification chamber 120, and the gap between the gas-water separation membrane 300 and the humidification chamber 120 is sealed by the flow guide ring plate 320, so as to prevent moisture from flowing to the humidity outlet 104 directly from the gap between the gas-water separation membrane 300 and the humidification chamber 120.
Referring to fig. 1 and 2, in an alternative of the present embodiment, humidification chamber 120 includes an ingression chamber 121 and an egression chamber 122; the wet-out chamber 122 is located between the wet-in chamber 121 and the first seal support 101.
Specifically, the humidifier includes both the wet inlet chamber 121 and the wet outlet chamber 122, and the moisture enters the wet inlet chamber 121 from the wet inlet 105 and then flows to the wet outlet chamber 122, and is separated by the moisture-water separation membrane 300 and then discharged from the wet outlet 104.
In an alternative of this embodiment, the gas-water separation membrane 300 has one end connected to the first sealing support 101 and the other end connected to the inner wall of the wet outlet chamber 122 to separate the wet outlet 104 from the humidifying core 200 through the gas-water separation membrane 300.
Specifically, the gas-water separation membrane 300 is connected to the first sealing support 101 at one end and to the wet outlet chamber 122 at the other end, and the gas-water separation membrane 300 is arranged to separate the wet outlet 104 from the humidifying core 200, so that the moisture to be discharged needs to pass through the gas-water separation membrane 300.
In an alternative of this embodiment, a support for supporting the gas-water separation membrane 300 is provided in the wet outlet chamber 122.
Specifically, a support is arranged in the wet outlet cavity 122, the gas-water separation membrane 300 is supported by the support, the gas-water separation membrane 300 is prevented from being directly covered on the humidifying core 200, and the position of the gas-water separation membrane 300 can be fixed by the support.
In an alternative of this embodiment, the gas-water separation membrane 300 is a PTFE gas-permeable hydrophobic membrane.
Specifically, the gas-water separation membrane 300 may be a PTFE (polytetrafluoroethylene) gas-permeable hydrophobic membrane, and one side of the gas-water separation membrane 300 facing the humidification core 200 can only pass gas, but cannot pass liquid.
In addition, those skilled in the art can also select the material of the gas-water separation membrane 300 according to actual requirements, and the detailed description is omitted here.
The present embodiment provides a fuel cell system including a system frame and a fuel cell humidifier; the fuel cell humidifier is provided on the system frame.
Specifically, compared with the prior art, the fuel cell system provided in the present embodiment has the advantages of the fuel cell humidifier described above, and details thereof are not repeated herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. A fuel cell humidifier, characterized by comprising:
the humidifier comprises a humidifier shell (100), wherein a dry inlet (103) and a dry outlet (106) are respectively arranged at two ends of the humidifier shell (100), a humidifying cavity (120) is hermetically arranged in the humidifier shell (100), and a wet inlet (105) and a wet outlet (104) which are respectively communicated with the humidifying cavity (120) are arranged on the humidifier shell (100);
the humidifying wick (200), the humidifying wick (200) is arranged in the humidifying cavity (120), and two ends of the humidifying wick (200) are respectively communicated with the dry inlet (103) and the dry outlet (106);
the gas-water separation membrane (300) is arranged on the humidifying core body (200) in a cylindrical surrounding manner, and one end of the gas-water separation membrane (300) is connected with the side wall, close to the wet outlet (104), of the humidifying cavity (120), so that moisture is discharged from the wet outlet (104) after passing through the gas-water separation membrane (300);
the bottom of the gas-water separation membrane (300) is provided with a water through hole (310).
2. A fuel cell humidifier according to claim 1, wherein a first sealing support (101) is provided between the dry inlet (103) and the humidification chamber (120), and a second sealing support (102) is provided between the dry outlet (106) and the humidification chamber (120);
the humidifying core (200) is a hollow fiber membrane tube, one end of the hollow fiber membrane tube is communicated with the dry inlet (103) through the first sealing support piece (101), and the other end of the hollow fiber membrane tube is communicated with the dry outlet (106) through the second sealing support piece (102).
3. The fuel cell humidifier according to claim 2, further comprising a baffle ring plate (320);
one end of the gas-water separation membrane (300) is connected with the first sealing support (101);
the outer edge of the flow guide ring plate (320) is connected with the inner wall of the humidifying cavity (120), and the inner edge of the flow guide ring plate (320) is connected with one end, far away from the first sealing support (101), of the gas-water separation membrane (300).
4. A fuel cell humidifier according to claim 3, wherein the humidification chamber (120) includes a wet-in chamber (121) and a wet-out chamber (122) communicating with each other;
-said wet-in chamber (121) and said wet-out chamber (122) are both arranged between said first sealing support (101) and said second sealing support (102), and said wet-out chamber (122) is located between said wet-in chamber (121) and said first sealing support (101);
the gas-water separation membrane (300) and the deflector ring (320) are both disposed within the wet outlet chamber (122).
5. The fuel cell humidifier according to claim 4, wherein a support for supporting the gas-water separation membrane (300) is provided in the wet outlet chamber (122).
6. The fuel cell humidifier according to claim 4, wherein a drain port (107) is provided at a bottom of the wet outlet chamber (122).
7. The fuel cell humidifier according to any one of claims 1-6, wherein the gas-water separation membrane (300) is a PTFE gas-permeable hydrophobic membrane.
8. The fuel cell humidifier according to any one of claims 1 to 6, wherein the humidifier housing (100) is formed with a dry inlet chamber (110) communicating with the dry inlet (103) and a dry outlet chamber (130) communicating with the dry outlet (106).
9. A fuel cell humidifier according to any one of claims 1-6, wherein end caps are provided on the humidifier housing (100) at the dry inlet (103) and the dry outlet (106), the end caps forming with the humidifier housing (100) a dry inlet chamber (110) communicating with the dry inlet (103) and a dry outlet chamber (130) communicating with the dry outlet (106).
10. A fuel cell system characterized by comprising a system frame and the fuel cell humidifier of any one of claims 1 to 9;
the fuel cell humidifier is disposed on the system frame.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202221116342.6U CN217522061U (en) | 2022-04-29 | 2022-04-29 | Fuel cell humidifier and fuel cell system |
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CN202221116342.6U CN217522061U (en) | 2022-04-29 | 2022-04-29 | Fuel cell humidifier and fuel cell system |
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CN217522061U true CN217522061U (en) | 2022-09-30 |
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CN202221116342.6U Active CN217522061U (en) | 2022-04-29 | 2022-04-29 | Fuel cell humidifier and fuel cell system |
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CN (1) | CN217522061U (en) |
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