CN212571052U - Fuel cell hydrogen supply system and fuel cell system - Google Patents
Fuel cell hydrogen supply system and fuel cell system Download PDFInfo
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- CN212571052U CN212571052U CN202021746164.6U CN202021746164U CN212571052U CN 212571052 U CN212571052 U CN 212571052U CN 202021746164 U CN202021746164 U CN 202021746164U CN 212571052 U CN212571052 U CN 212571052U
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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 discloses a fuel cell hydrogen supply system and a fuel cell system, wherein the hydrogen supply system comprises a hydrogen circulating pump, a drainage device and at least two connecting pipelines; the drainage device is provided with a first cooling liquid interface and a second cooling liquid interface; the drainage device is also provided with a middle through hole, and the drainage device is sleeved on a hydrogen pump joint of the hydrogen circulating pump through the middle through hole; a circulating flow channel is arranged in the drainage device, one end of the circulating flow channel is connected with the first cooling liquid interface, and the other end of the circulating flow channel is connected with the second cooling liquid interface; the first cooling liquid interface is connected with one end of a PTC heating element of the fuel cell through a corresponding connecting pipeline, and the second cooling liquid interface is connected with the other end of the PTC heating element through a corresponding connecting pipeline. The embodiment of the utility model provides a fuel cell hydrogen supply system and fuel cell system, through the heat of introducing the PTC heat-generating body, avoided fuel cell at the pump head phenomenon of freezing of cold start-up in-process hydrogen circulating pump, realized the heating effect to the pump head.
Description
Technical Field
The utility model belongs to the technical field of the fuel cell technique and specifically relates to a fuel cell hydrogen supply system and fuel cell system are related to.
Background
The fuel cell has the advantages of low working temperature, quick start, high energy density and long service life, and is widely applied to portable power supplies, locomotive power supplies and small and medium-sized power generation systems.
At present, fuel cell's pile is at cold start-up in-process, the hydrogen circulating pump among the hydrogen supply system can circulate the inlet end of pile with the remaining hydrogen of fuel cell pile reaction, and the steam that the reaction formed also can be brought into the hydrogen circulating pump by the hydrogen of cyclic reaction, pump head department at the hydrogen circulating pump produces the phenomenon of freezing, the ice granule that freezes the production can lead to the fact wearing and tearing to the structural component in the pump head, the extrusion, destroy its surface coating, cause the inner structure damage of pump head even, lead to fuel cell hydrogen supply system trouble. In prior art, through add electric drive's heating device in the pump head department of hydrogen pump, solve the inside problem of freezing of pump head, however, heating device's such as electric heating wire, electric heating pipe introduction not only can improve each electric elements's in the fuel cell short circuit risk, brings electric fire hidden danger, and heating device needs extra consumption external electric energy moreover, leads to the power consumption total volume increase such as new energy automobile.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fuel cell hydrogen supply system and fuel cell system need not to introduce electric energy driven heating device, need not to consume extra electric energy, and through the heat of introducing fuel cell self PTC heat-generating body, avoided fuel cell at the pump head phenomenon of freezing of cold start in-process hydrogen circulating pump, realized the heating effect to the pump head.
In order to solve the above technical problem, an embodiment of the present invention provides a fuel cell hydrogen supply system, including: the hydrogen circulating pump, the drainage device and the at least two connecting pipelines;
the drainage device is provided with a first cooling liquid interface and a second cooling liquid interface;
the drainage device is also provided with a middle through hole, the drainage device is sleeved on a hydrogen pump joint of the hydrogen circulating pump through the middle through hole, and the drainage device is tightly contacted with the hydrogen pump joint through the middle through hole;
a circulating flow channel is arranged in the drainage device, one end of the circulating flow channel is connected with the first cooling liquid interface, and the other end of the circulating flow channel is connected with the second cooling liquid interface;
the first cooling liquid interface is connected with one end of a PTC heating element of the fuel cell through the corresponding connecting pipeline, and the second cooling liquid interface is connected with the other end of the PTC heating element through the corresponding connecting pipeline.
As one preferable scheme, the hydrogen circulating pump and the drainage device are of an integrated forming structure.
Preferably, the circulation flow channel surrounds the central through hole in the drainage device.
Another embodiment of the present invention provides a fuel cell system, comprising a stack, a PTC heating element, a water pump, a water tank and the above-mentioned hydrogen supply system for fuel cell, wherein a hydrogen pump connector of the hydrogen supply system for fuel cell is connected to the stack, and a coolant outlet of the stack is connected to the water tank through the water pump; the PTC heating body is connected in series in a cooling liquid loop of the galvanic pile.
Preferably, the fuel cell system further comprises a plurality of electronic control valves, and the electronic control valves are arranged in a cooling liquid loop of the electric pile.
As a preferable scheme, the electric control valve is an electric control two-way valve or an electric control three-way valve.
Compared with the prior art, the beneficial effects of the utility model reside in that, utilize the inside produced heat of fuel cell itself, through the drainage device who sets up specific structure on the hydrogen pump connector at hydrogen circulating pump, form the loop with the PTC heat-generating body is parallelly connected, lead hydrogen pump head department with the heat of the PTC heat-generating body in the fuel cell coolant liquid return circuit, coolant liquid after the PTC heat-generating body heating is at drainage device internal circulation, heat conduction mode through fluid and solid with drainage device, and then realized the heating to the pump head, fuel cell has been avoided freezing phenomenon at the pump head of cold start-up in-process hydrogen circulating pump. The whole hydrogen system and the fuel cell system are simple and reasonable in structure, an electric energy-driven heating device is not required to be introduced, extra electric energy is not required to be consumed, the pump head icing phenomenon of the hydrogen circulating pump in the cold starting process of the fuel cell is avoided by introducing the heat of the PTC heating body of the fuel cell, and the heating effect on the pump head is realized.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogen supply system for a fuel cell according to an embodiment of the present invention;
fig. 2 is a side view of a fuel cell hydrogen supply system in one embodiment of the invention;
fig. 3 is a top view of a fuel cell hydrogen supply system in one embodiment of the invention;
fig. 4 is a schematic structural view of a drainage device according to an embodiment of the present invention;
FIG. 5 is a side view of a drainage device in one embodiment of the invention;
fig. 6 is a top view of a drainage device in one embodiment of the present invention;
fig. 7 is a cross-sectional view of a drainage device in one embodiment of the invention;
fig. 8 is a schematic diagram of a fuel cell of the two-way valve in one embodiment of the invention;
fig. 9 is a schematic diagram of a three-way valve fuel cell according to an embodiment of the present invention;
wherein the reference numbers are as follows:
1. a hydrogen circulation pump; 2. a drainage device; 3. a PCT heating body; 4. a water pump; 5. a water tank; 6. a galvanic pile; 11. a hydrogen pump connector; 21. a first coolant port; 22. a second coolant port; 23. a middle through hole; 24. a circulating flow passage; m, an electric control two-way valve; n, an electrically controlled two-way valve; H. an electrically controlled three-way valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, 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; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description of the present application, it is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention, and the specific meanings of the terms in the present application will be understood to those skilled in the art in a specific context.
An embodiment of the present invention provides a fuel cell hydrogen supply system, specifically, please refer to fig. 1, fig. 2 and fig. 3, wherein fig. 1 shows a schematic structural diagram of the fuel cell hydrogen supply system in one embodiment, fig. 2 shows a side view of the fuel cell hydrogen supply system in one embodiment, and fig. 3 shows a top view of the fuel cell hydrogen supply system in one embodiment, as shown in fig. 1, which includes a hydrogen circulation pump 1, a flow guiding device 2 and at least two connecting pipelines (not shown).
A first cooling liquid interface 21 and a second cooling liquid interface 22 are arranged on the drainage device 2;
the drainage device 2 is also provided with a middle through hole 23, the drainage device 2 is sleeved on the hydrogen pump joint 11 of the hydrogen circulating pump 1 through the middle through hole 23, and the drainage device 2 is tightly contacted with the hydrogen pump joint 11 through the middle through hole 23; a circulation flow channel 24 (not shown in fig. 1) is formed in the drainage device 2, one end of the circulation flow channel 24 is connected with the first cooling liquid interface 21, and the other end of the circulation flow channel 24 is connected with the second cooling liquid interface 22; the first coolant port 21 is connected to one end (not shown in fig. 1) of the PTC heating element 3 of the fuel cell through the corresponding connecting line, and the second coolant port 22 is connected to the other end of the PTC heating element 3 through the corresponding connecting line.
It should be noted that, when the fuel cell system is in operation, water is generated at both the anode side and the cathode side of the fuel cell system, most of the water is discharged out of the stack, and water vapor formed by a small amount of water is collected in the bipolar plate air flow channel and the hydrogen flow channel, when the fuel cell is in an environment of 0 ℃ for a long time, the water vapor inside the stack freezes the exchange membrane, which causes the flow channels to be blocked, and further causes the performance of the stack to be reduced, therefore, the existing fuel cell system connects a PTC heating element (preferably a PTC heating tube) in series in the cooling liquid loop, heats the cooling liquid and starts the water pump, and operates for a period until the ice in the stack is removed.
In order to solve the problem of icing inside the pump head, the additionally arranged electric energy driven heating device has a plurality of disadvantages, and the introduction of the device can improve the short circuit risk of each electric element in the fuel cell and bring about the hidden danger of electrical fire; secondly, the device needs to consume extra external electric energy, so that the available capacity of the storage battery of the fuel cell vehicle is reduced. The utility model discloses the people is through experimental analysis many times, the discovery can utilize the heat in the inside coolant liquid return circuit of fuel cell, introduce hydrogen pump head department with it and heat, it is parallelly connected with drainage device to be about for the PTC heat-generating body, the one end of the parallelly connected branch road of formation and the entry linkage of the coolant liquid of pile, the other end and the water pump of parallelly connected branch road are connected, not only need not add electric drive arrangement, the short circuit risk has been reduced, need not to consume external electric energy, and whole simple structure is reasonable, can realize the heating effect of preferred, the pump head phenomenon of freezing of fuel cell at cold start-up in-process hydrogen circulating pump has been avoided.
As one preferable scheme, the hydrogen circulation pump 1 and the drainage device 2 are of an integral molding structure. According to the scheme, the hydrogen pump head is heated in a heat conduction mode, so that the structure of the integrated forming type can reduce heat loss, the heating effect on the hydrogen pump head is improved, and of course, the split structure with the hydrogen circulating pump and the drainage device independently designed can be selected for use, so that the fuel cell is convenient to disassemble and maintain.
Preferably, in the above embodiment, the material of the flow guiding device 2 has a high thermal conductivity, so as to improve the heating effect, and aluminum, copper, or other materials with ultrahigh thermal conductivity can be selected according to the cost requirement of the actual fuel cell.
Preferably, in the present embodiment, please refer to fig. 4, fig. 5, fig. 6 and fig. 7, wherein fig. 4 is a schematic structural diagram of the drainage device in one embodiment, fig. 5 is a side view of the drainage device in one embodiment, fig. 6 is a top view of the drainage device in one embodiment, fig. 7 is a cross-sectional view of the drainage device in one embodiment, and as shown in fig. 7, the circulation flow channel 24 surrounds the central through hole 23 in the drainage device 2. Set up the circulation flow path into the mode around the middle part through-hole to can make the coolant liquid after being heated when flowing in the circulation flow path, lead to the hydrogen pump head department that is being established by the middle part through-hole cover uniformly with the heat, realize the heating effect to the hydrogen pump head through the heat-conduction mode of mutual contact, effectively avoided fuel cell to freeze the phenomenon at the pump head of cold start-up in-process hydrogen circulating pump.
Another embodiment of the present invention provides a fuel cell system, comprising a stack 6, a PTC heating element 3, a water pump 4, a water tank 5 and a hydrogen supply system for fuel cell as described above, wherein a hydrogen pump connector 11 of the hydrogen supply system for fuel cell is connected to the stack 6, and a coolant outlet of the stack 6 is connected to the water tank 5 through the water pump 4; the PTC heating body 3 is connected in series in a cooling liquid loop of the galvanic pile 6 and is connected with the drainage device 2.
In addition, the embodiment of the utility model provides a hydrogen supply system's range of application is extensive, and as one of them preferred scheme, fuel cell system still includes the automatically controlled valve of a plurality of quantity, the automatically controlled valve is located in the coolant liquid return circuit of galvanic pile. Specifically, referring to fig. 8, fig. 8 is a schematic structural diagram of a fuel cell of a two-way valve in one embodiment, where a coolant circuit of a fuel cell system adopts a design of 2 electrically controlled two-way valves, namely an electrically controlled two-way valve M and an electrically controlled two-way valve N, before the system starts power generation, when the temperature of the coolant is lower than 0 ℃, the electrically controlled two-way valve N is turned on, the electrically controlled two-way valve M is turned off, the PTC heating element 3 starts to heat the coolant, the water pump 4 is operated, after heating for a period of time, the drainage device 2 is heated by the coolant, the pump head is heated by a heat conduction manner, ice inside the pump head is removed, and the system starts power. When the system normally operates, the two-way valve N is closed, the two-way valve M is opened, and the system dissipates heat through an external auxiliary radiator.
Specifically, referring to fig. 9, fig. 9 is a schematic structural diagram of a fuel cell with three-way valves in one embodiment, a coolant circuit of a fuel cell system adopts 1 electrically controlled three-way valve design, specifically, an electrically controlled three-way valve H having three interfaces a1, a2 and a3, when the temperature of coolant is lower than 0 ℃ before the system starts power generation, a1 and a3 of the electrically controlled three-way valve H are opened, a2 is closed, the PTC heating element 3 starts to heat the coolant and the water pump 4 is operated, after heating for a period of time, the drainage device 2 is heated by the coolant, the pump head is heated by heat conduction, ice inside the pump head is removed, and the system starts power generation. When the system operates normally, the a1 of the electric control three-way valve H is closed, and the a2 and the a3 start the system to dissipate heat through an external auxiliary radiator.
The embodiment of the utility model provides a fuel cell hydrogen supply system and fuel cell system, utilize the inside produced heat of fuel cell itself, through the drainage device who sets up specific structure on the hydrogen pump connector at hydrogen circulating pump, form the loop with the PTC heat-generating body is parallelly connected, lead hydrogen pump head department with the heat of the PTC heat-generating body in the fuel cell coolant liquid return circuit, coolant liquid after the PTC heat-generating body heating is at drainage device internal circulation, heat conduction mode through fluid and solid with the drainage device, and then realized the heating to the pump head, avoided fuel cell at the frozen phenomenon of pump head of cold start-up in-process hydrogen circulating pump. The whole hydrogen system and the fuel cell system are simple and reasonable in structure, an electric energy-driven heating device is not required to be introduced, extra electric energy is not required to be consumed, the pump head icing phenomenon of the hydrogen circulating pump in the cold starting process of the fuel cell is avoided by introducing the heat of the PTC heating body of the fuel cell, and the heating effect on the pump head is realized.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (6)
1. A fuel cell hydrogen supply system, comprising: the hydrogen circulating pump, the drainage device and the at least two connecting pipelines;
the drainage device is provided with a first cooling liquid interface and a second cooling liquid interface;
the drainage device is also provided with a middle through hole, the drainage device is sleeved on a hydrogen pump joint of the hydrogen circulating pump through the middle through hole, and the drainage device is tightly contacted with the hydrogen pump joint through the middle through hole;
a circulating flow channel is arranged in the drainage device, one end of the circulating flow channel is connected with the first cooling liquid interface, and the other end of the circulating flow channel is connected with the second cooling liquid interface;
the first cooling liquid interface is connected with one end of a PTC heating element of the fuel cell through the corresponding connecting pipeline, and the second cooling liquid interface is connected with the other end of the PTC heating element through the corresponding connecting pipeline.
2. The fuel cell hydrogen supply system according to claim 1, wherein the hydrogen circulation pump and the flow guide are integrally formed.
3. A fuel cell hydrogen supply system in accordance with claim 1, wherein said circulation flow path surrounds said central through hole in said flow inducing means.
4. A fuel cell system comprising a stack, a PTC heater, a water pump, a water tank, and a fuel cell hydrogen supply system according to any one of claims 1 to 3;
a hydrogen pump joint of the fuel cell hydrogen supply system is connected with the electric pile, and a cooling liquid outlet of the electric pile is connected with the water tank through the water pump; the PTC heating body is connected in series in a cooling liquid loop of the galvanic pile.
5. The fuel cell system of claim 4, further comprising a number of electrically controlled valves disposed in a coolant loop of the stack.
6. The fuel cell system of claim 5, wherein the electrically controlled valve is an electrically controlled two-way valve or an electrically controlled three-way valve.
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| CN202021746164.6U CN212571052U (en) | 2020-08-19 | 2020-08-19 | Fuel cell hydrogen supply system and fuel cell system |
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| CN202021746164.6U CN212571052U (en) | 2020-08-19 | 2020-08-19 | Fuel cell hydrogen supply system and fuel cell system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111900436A (en) * | 2020-08-19 | 2020-11-06 | 广东国鸿氢能科技有限公司 | Fuel cell hydrogen supply system and fuel cell system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900436A (en) * | 2020-08-19 | 2020-11-06 | 广东国鸿氢能科技有限公司 | Fuel cell hydrogen supply system and fuel cell system |
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Address after: No. 8, Hydrogen Energy Avenue, Foshan (Yunfu) Industrial Transfer Industrial Park, Silao Town, Yuncheng District, Yunfu City, Guangdong Province, 527300 Patentee after: Guangdong Guohong Hydrogen Energy Technology Co.,Ltd. Address before: No.9, Nanyuan District, Foshan (Yunfu) industrial transfer industrial park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province Patentee before: GUANGDONG SINOSYNERGY HYDROGEN POWER TECHNOLOGY Co.,Ltd. |
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Address after: 314000 Room 501-2, Building 37, Hangzhou Bay New Economic Park, Port District, Jiaxing City, Zhejiang Province Patentee after: Guohong Hydrogen Energy Technology (Jiaxing) Co.,Ltd. Address before: No. 8, Hydrogen Energy Avenue, Foshan (Yunfu) Industrial Transfer Industrial Park, Silao Town, Yuncheng District, Yunfu City, Guangdong Province, 527300 Patentee before: Guangdong Guohong Hydrogen Energy Technology Co.,Ltd. |