CN216749985U - Air system for cold start of fuel cell - Google Patents
Air system for cold start of fuel cell Download PDFInfo
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- CN216749985U CN216749985U CN202220432175.XU CN202220432175U CN216749985U CN 216749985 U CN216749985 U CN 216749985U CN 202220432175 U CN202220432175 U CN 202220432175U CN 216749985 U CN216749985 U CN 216749985U
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- humidifier
- fuel cell
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Abstract
The utility model provides an air system for cold start of a fuel cell, and relates to the technical field of fuel cells. The air system for cold start of the fuel cell comprises an air filter, a humidifier and a heater; the humidifier and the heater are connected in parallel, one ends of the humidifier and the heater are connected with the air filter, and the other ends of the humidifier and the heater are connected with an air inlet of the galvanic pile. The technical effect of prolonging the service life of the heater is achieved.
Description
Technical Field
The utility model relates to the technical field of fuel cells, in particular to an air system for cold start of a fuel cell.
Background
The fuel cell is a clean energy technology, has good economic benefit and social benefit, is widely applied to industries such as small and medium-sized power stations, electric vehicles, standby power supplies and the like, and has wide application prospect. The working performance of the fuel cell system is greatly related to the temperature, and the optimal working temperature of the fuel cell stack is 60-75 ℃. When the temperature of the external environment is too low, the fuel cell needs a long time to achieve the best working performance, and even the fuel cell system cannot be started normally because the residual moisture inside the fuel cell system condenses into ice to block the flow channel.
The fuel cell system is at the cold start-up in-process of low temperature, and the temperature of coolant liquid can heat through PTC, but the air just gets into the pile without heating, and the temperature that gets into the pile is ambient temperature, for preventing microthermal air admission pile, leads to the system operation unstable, consequently need heat the air, but sets up the heater in pile air inlet department among the prior art, sets up like this and can cause heater life to hang down.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide an air system for a cold start of a fuel cell that improves the service life of a heater.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air system for cold start of a fuel cell, which is used for alleviating the technical problem of low service life of a heater in the prior art.
In a first aspect, an embodiment of the present invention provides an air system for cold start of a fuel cell, including an air filter, a humidifier, and a heater;
the humidifier and the heater are connected in parallel, one ends of the humidifier and the heater are connected with the air filter, and the other ends of the humidifier and the heater are connected with an air inlet of the electric pile.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the air system for cold start of the fuel cell further includes a proportional valve, the proportional valve is connected in series with the heater, and the heater is located between the proportional valve and the stack.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the proportional valve is a proportional flow valve.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the proportional valve is a proportional pressure valve.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the heater employs a preheating grid.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the air system for cold start of the fuel cell further includes an air compressor, an air inlet of the air compressor is connected to an air outlet of the air filter, and both the humidifier and the heater are connected to an air outlet of the air compressor.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the air system for cold start of a fuel cell further includes an intercooler, an air inlet of the intercooler is connected to an air outlet of the air compressor, and both the humidifier and the heater are connected to an air outlet of the intercooler.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an exhaust port of the intercooler is connected to a cooling port of the air compressor.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the water inlet of the humidifier is connected to the water outlet of the galvanic pile, and a back pressure valve is disposed at the water outlet of the humidifier.
Has the advantages that:
the embodiment of the utility model provides an air system for cold start of a fuel cell, which comprises an air filter, a humidifier and a heater, wherein the air filter is connected with the humidifier; the humidifier and the heater are connected in parallel, one ends of the humidifier and the heater are connected with the air filter, and the other ends of the humidifier and the heater are connected with an air inlet of the electric pile.
Specifically, through parallelly connected humidifier and heater to in cold start-up process, the air that gets into from empty filter can pass through humidifier and heater respectively, and carry into the galvanic pile respectively from humidifier and heater in, thereby make the wet cold air through the humidifier can not reentrant the heater in, thereby can not lead to the fact the corruption to the heater, improve the life of heater, reduce the part that the air passed through in proper order moreover, thereby can not lead to the fact harmful effects to air system's air pressure.
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 description of the embodiments or 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 other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flow chart illustrating a configuration of an air system for cold start of a fuel cell according to an embodiment of the present invention.
Icon:
100-air filter;
200-a humidifier;
300-a heater;
400-electric pile;
500-proportional valve;
600, an air compressor;
700-an intercooler;
800-backpressure valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
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 defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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, an embodiment of the present invention provides an air system for a cold start of a fuel cell, including an air filter 100, a humidifier 200, and a heater 300; the humidifier 200 and the heater 300 are connected in parallel, and one end of each of the humidifier 200 and the heater 300 is connected to the air filter 100, and the other end is connected to the air inlet of the stack 400.
Specifically, the humidifier 200 and the heater 300 are connected in parallel, so that in the cold start process, air entering from the air filter 100 can pass through the humidifier 200 and the heater 300 respectively, and is delivered into the stack 400 from the humidifier 200 and the heater 300 respectively, so that wet cold air passing through the humidifier 200 cannot enter the heater 300 again, the heater 300 cannot be corroded, the service life of the heater 300 is prolonged, components through which the air passes in sequence are reduced, and adverse effects on the air pressure of an air system cannot be caused.
In addition, when the vehicle is cold-started, the Temperature of the heater 300 is greater than that of a PTC (Positive Temperature Coefficient) heating element for heating the coolant.
Referring to fig. 1, in an alternative of the present embodiment, the air system for the cold start of the fuel cell further includes a proportional valve 500, the proportional valve 500 is connected in series with the heater 300, and the heater 300 is located between the proportional valve 500 and the stack 400.
Specifically, a proportional valve 500 is connected in series in front of the heater 300, and the ratio of the air passing through the humidifier and the air passing through the heater 300 can be adjusted by the proportional valve 500, so as to control the overall temperature of the air entering the stack 400.
When the stack 400 is operated at normal temperature, the proportional valve 500 is fully closed, so that the pressure loss of an air system for cold start of the fuel cell is not influenced, and the stack inlet pressure and the rotating speed of the air compressor are prevented from being influenced.
In an alternative to this embodiment, the proportional valve 500 is a proportional flow valve.
Specifically, the proportional valve 500 may be a proportional flow valve, and in addition, a person skilled in the art may select the type of the proportional valve 500 according to the actual situation, which is not described herein again.
In an alternative to this embodiment, the proportional valve 500 is a proportional pressure valve.
Specifically, the proportional valve 500 may be a proportional pressure valve, and in addition, a person skilled in the art may select the type of the proportional valve 500 according to actual situations, which is not described herein again.
Referring to fig. 1, in an alternative to this embodiment, a heater 300 employs a pre-heated grill.
Specifically, the heater 300 may adopt a preheating grid, and through such an arrangement, the passing air can be conveniently heated, and in addition, a person skilled in the art may select the type of the heater 300 according to actual situations, and details are not described herein.
Referring to fig. 1, in an alternative of this embodiment, the air system for cold start of the fuel cell further includes an air compressor, an air inlet of the air compressor is connected to an air outlet of the air filter 100, and both the humidifier 200 and the heater 300 are connected to an air outlet of the air compressor.
Specifically, the air pressure required for the stack 400 is increased by the air compressor to be discharged from the air filter 100.
Referring to fig. 1, in an alternative of the present embodiment, the air system for cold start of the fuel cell further includes an intercooler 700, an air inlet of the intercooler 700 is connected to an air outlet of an air compressor, and both the humidifier 200 and the heater 300 are connected to an air outlet of the intercooler 700.
Specifically, through the setting of intercooler 700, can cool off the compressed air who comes from the air compressor machine, the cooperation humidifier is used, can make the air temperature who gets into galvanic pile 400 at reasonable within range.
In addition, during cold start, intercooler 700 stops operating.
Referring to fig. 1, in an alternative embodiment, an exhaust port of intercooler 700 is connected to a cooling port of an air compressor.
In addition, the cold air discharged from the intercooler 700 can flow back into the air compressor through the cooling port of the air compressor, so that the air compressor is cooled, and the air compressor is prevented from being overheated and stopped.
Referring to fig. 1, in an alternative embodiment, the water inlet of the humidifier 200 is connected to the water outlet of the stack 400, and the water outlet of the humidifier 200 is provided with a back pressure valve 800.
Specifically, by setting the back pressure valve 800, the water path in the humidifier is kept at a set pressure, so that the membrane electrode in the stack 400 is prevented from losing water, and the cell performance of the stack 400 is ensured.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. An air system for cold start of a fuel cell, comprising: an air filter (100), a humidifier (200), and a heater (300);
the humidifier (200) and the heater (300) are connected in parallel, one end of the humidifier (200) and one end of the heater (300) are both connected with the air filter (100), and the other end of the humidifier is connected with an air inlet of the electric pile (400).
2. The air system for cold start-up of fuel cell according to claim 1, further comprising a proportional valve (500), said proportional valve (500) being in series with said heater (300), and said heater (300) being located between said proportional valve (500) and said stack (400).
3. The air system for cold start of fuel cell according to claim 2, characterized in that said proportional valve (500) employs a proportional flow valve.
4. The air system for cold start of fuel cell according to claim 2, characterized in that said proportional valve (500) employs a proportional pressure valve.
5. The air system for cold start of fuel cell according to claim 2, characterized in that said heater (300) employs a pre-heating grid.
6. The air system for cold start-up of fuel cell according to any one of claims 1 to 5, further comprising an air compressor, an air inlet of which is connected to an air outlet of the air filter (100), and the humidifier (200) and the heater (300) are both connected to an air outlet of the air compressor.
7. The air system for cold start of fuel cell as set forth in claim 6, further comprising an intercooler (700), wherein an inlet of the intercooler (700) is connected to an outlet of the air compressor, and wherein both the humidifier (200) and the heater (300) are connected to an outlet of the intercooler (700).
8. The air system for cold start of fuel cell as set forth in claim 7, wherein an exhaust port of the intercooler (700) is connected to a cooling port of the air compressor.
9. The air system for cold start-up of fuel cell according to any one of claims 1 to 5, wherein the water inlet of the humidifier (200) is connected to the water outlet of the stack (400), and the water outlet of the humidifier (200) is provided with a back pressure valve (800).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220432175.XU CN216749985U (en) | 2022-03-01 | 2022-03-01 | Air system for cold start of fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220432175.XU CN216749985U (en) | 2022-03-01 | 2022-03-01 | Air system for cold start of fuel cell |
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| CN216749985U true CN216749985U (en) | 2022-06-14 |
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| CN202220432175.XU Active CN216749985U (en) | 2022-03-01 | 2022-03-01 | Air system for cold start of fuel cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115036529A (en) * | 2022-07-26 | 2022-09-09 | 重庆科技学院 | Solid oxide fuel cell heat energy utilization and management system and working method |
| WO2024041088A1 (en) * | 2022-08-23 | 2024-02-29 | 中国第一汽车股份有限公司 | Thermal management system and thermal management method for fuel cell engine, and vehicle |
-
2022
- 2022-03-01 CN CN202220432175.XU patent/CN216749985U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115036529A (en) * | 2022-07-26 | 2022-09-09 | 重庆科技学院 | Solid oxide fuel cell heat energy utilization and management system and working method |
| CN115036529B (en) * | 2022-07-26 | 2023-11-10 | 重庆科技学院 | Heat energy utilization and management system of solid oxide fuel cell and working method |
| WO2024041088A1 (en) * | 2022-08-23 | 2024-02-29 | 中国第一汽车股份有限公司 | Thermal management system and thermal management method for fuel cell engine, and vehicle |
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