CN210296521U - Fuel cell end plate with hydrogen-water separation function - Google Patents
Fuel cell end plate with hydrogen-water separation function Download PDFInfo
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- CN210296521U CN210296521U CN201921290990.1U CN201921290990U CN210296521U CN 210296521 U CN210296521 U CN 210296521U CN 201921290990 U CN201921290990 U CN 201921290990U CN 210296521 U CN210296521 U CN 210296521U
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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 collect hydrogen water separating function's fuel cell end plate, including fuel cell membrane electrode, fuel cell membrane electrode's right side fixedly connected with fuel cell end plate, the bottom intercommunication on fuel cell end plate right side has the connecting pipe, and the top fixedly connected with hydrogen in connecting pipe inner chamber advances pressure sensor, and the right-hand member intercommunication of connecting pipe has hydrogen supply equipment, and the top of connecting pipe has the hydrogen circulating pump through the pipeline intercommunication. The utility model discloses a set up the bolt and go out drain valve, hydrogen discharging valve and hydrogen and go out pressure sensor and directly be connected with the fuel cell end plate, can the reduce system volume, improve power density, through the support piece that the fuel cell end plate compressed tightly as the pile, under the prerequisite that the assurance end plate does not reduce pile supporting effect, through design and processing to the terminal plate vacant region, form the effect that has separation of water, can reduce water knockout drum and the connecting line on the fuel cell system, improve the integrated level of system.
Description
Technical Field
The utility model relates to a fuel cell technical field specifically is a fuel cell end plate of collection hydrogen water separating function.
Background
When the fuel cell system is operated, the stack generates water on the cathode side (air side) by an electrochemical reaction, and the water on the cathode side permeates into the anode side due to a concentration step, so that the anode side (hydrogen side) of the fuel cell is discharged with hydrogen and liquid water.
In order to improve the hydrogen utilization rate of the fuel cell, a hydrogen circulation mode is generally adopted, but liquid water needs to be separated so as to prevent the liquid water from entering an anode inlet of the pile in a circulating manner to block an anode hydrogen flow channel and the surface of a catalytic layer, so that partial flooding and gas shortage of an anode path are caused, and the fuel cell is damaged.
The hydrogen is also required to be discharged while the hydrogen is circulated, and the hydrogen is mainly used for discharging nitrogen diffused by a cathode side due to concentration steps and membrane leakage so as to improve the reaction concentration of the anode hydrogen.
In the field of vehicle fuel cells, a fuel cell hydrogen outlet is connected with a water separator to separate liquid water in hydrogen, the liquid water is discharged by using an electromagnetic valve, and the hydrogen passing through the water separator enters a hydrogen inlet of a fuel cell through a circulating device to be recycled.
In a general fuel cell system for a vehicle, a stack is connected with a water distributor through a pipeline, the water distributor is connected with a drain valve and a hydrogen discharge valve through pipelines, the water distributor is connected with a hydrogen circulating device through a pipeline, the water distributor and a connecting pipeline occupy a part of space of the system, and the integration level is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fuel cell end plate of collection hydrogen water separating function possesses the fuel cell end plate convenient to use's of hydrogen water separating function advantage, has solved the inconvenient problem of automobile-used fuel cell use.
In order to achieve the above object, the utility model provides a following technical scheme: a fuel cell end plate with a hydrogen-water separation function comprises a fuel cell membrane electrode, wherein the right side of the fuel cell membrane electrode is fixedly connected with a fuel cell end plate, the bottom of the right side of the fuel cell end plate is communicated with a connecting pipe, the top of the inner cavity of the connecting pipe is fixedly connected with a hydrogen inlet pressure sensor, the right end of the connecting pipe is communicated with a hydrogen supply device, the top of the connecting pipe is communicated with a hydrogen circulating pump through a pipeline, and the left side of the hydrogen circulating pump is communicated with the right side of the fuel cell end plate through a pipeline;
the fuel cell end plate comprises a cooling liquid inlet, a membrane electrode hydrogen outlet, a drain valve, a flow channel baffle, an air inlet, a hydrogen discharge valve, an end plate hydrogen outlet, a hydrogen outlet pressure sensor, a hydrogen inlet, a cooling liquid outlet and an air outlet.
Preferably, the drain valve, the hydrogen discharge valve and the hydrogen outlet pressure sensor are movably connected with the fuel cell end plate through bolts.
Preferably, the top and the bottom of the inner cavity of the fuel cell end plate are fixedly connected with electric heating wires which are respectively positioned at the bottom of the drain valve and the top of the hydrogen discharge valve.
Preferably, the hydrogen outlet flow channel inside the fuel cell end plate is C-shaped, and the flow channel baffle is installed inside the hydrogen outlet flow channel.
Preferably, the inside of the fuel cell end plate is integrated with a hydrogen path water separation device, and meanwhile, a hydrogen path drain valve, a hydrogen discharge valve and a pressure sensor are integrated on the end plate.
Preferably, the residual hydrogen, gaseous water and liquid water reacted by the connecting pipe are separated in the fuel cell end plate, and the liquid water is stored at the bottom of the inner cavity of the flow channel of the fuel cell end plate.
Preferably, the residual hydrogen gas and the gaseous water flow upward through the flow channel in the fuel cell end plate, and flow from the hydrogen outlet of the fuel cell end plate to the circulation circuit.
Preferably, the hydrogen discharge valve is located at an upper portion of the fuel cell end plate and communicates with a hydrogen gas flow passage in the fuel cell end plate.
Preferably, the bottom of the hydrogen flow channel in the fuel cell end plate is provided with a cavity.
Preferably, the fuel cell end plate integrates a water distribution function, and the hydrogen circulation pump is communicated with the fuel cell end plate through a pipeline.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a support piece that the fuel cell end plate compressed tightly as the pile, under the prerequisite that the assurance end plate supported the effect not to reduce to the pile, through to the design and the processing of terminal plate spare area, formed the effect that has separation of water, can reduce water knockout drum and connecting line on the fuel cell system, improve the integrated level of system.
2. The utility model discloses a set up the bolt and go out pressure sensor with drain valve, hydrogen discharge valve and hydrogen and directly be connected with the fuel cell end plate, can the reduce system volume, improve power density.
3. The utility model discloses an electric heating wire is equipped with respectively at the upper and lower end of fuel cell end plate, is close to drain valve and hydrogen discharge valve, can be when low temperature rapid heating pile end plate for low temperature ice-melt and pile low temperature start in the solenoid valve pipe hole on the end plate.
4. The utility model discloses a set up C type hydrogen export runner in the fuel cell end plate, the runner bottom possesses certain appearance chamber, does benefit to hydrogen export liquid water and stores.
5. The utility model discloses a drain valve is equipped with to hydrogen export runner bottom in the fuel cell end plate, is convenient for with liquid water discharge end plate, prevents the water accumulation, blocks up the runner, is equipped with the hydrogen discharging valve through hydrogen export runner top in the fuel cell end plate, is convenient for discharge the nitrogen gas in the hydrogen gas circuit, guarantees the hydrogen concentration of hydrogen gas circuit.
6. The utility model discloses a hydrogen goes out pressure sensor, the pressure of the monitoring pile hydrogen export of being convenient for at fuel cell end plate hydrogen export runner middle part is equipped with.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of a fuel cell end plate according to the present invention;
fig. 3 is a cross-sectional view of the fuel cell end plate of the present invention.
In the figure: 1. a fuel cell membrane electrode; 2. a fuel cell end plate; 3. a hydrogen circulation pump; 4. a hydrogen inlet pressure sensor; 5. a hydrogen supply device; 6. a connecting pipe; 201. a coolant inlet; 202. a hydrogen outlet of the membrane electrode; 203. a drain valve; 204. a flow channel baffle; 205. an air inlet; 206. a hydrogen discharge valve; 207. An end plate hydrogen outlet; 208. a hydrogen output pressure sensor; 209. a hydrogen inlet; 210. a coolant outlet; 211. an air outlet; 212. an electric heating wire.
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 work belong to the protection scope of the present invention.
Referring to fig. 1-3, a fuel cell end plate with hydrogen-water separation function comprises a fuel cell membrane electrode 1, a fuel cell end plate 2 is fixedly connected to the right side of the fuel cell membrane electrode 1, a connecting pipe 6 is communicated with the bottom of the right side of the fuel cell end plate 2, a hydrogen inlet pressure sensor 4 is fixedly connected to the top of the inner cavity of the connecting pipe 6, a hydrogen supply device 5 is communicated with the right end of the connecting pipe 6, a hydrogen circulating pump 3 is communicated with the top of the connecting pipe 6 through a pipeline, and the left side of the hydrogen circulating pump 3 is communicated with the right side of the fuel cell end plate 2 through a;
the fuel cell end plate 2 includes a coolant inlet 201, a membrane electrode hydrogen outlet 202, a water discharge valve 203, a flow channel baffle 204, an air inlet 205, a hydrogen discharge valve 206, an end plate hydrogen outlet 207, a hydrogen discharge pressure sensor 208, a hydrogen inlet 209, a coolant outlet 210, and an air outlet 211.
1. In order to improve the hydrogen utilization rate of the fuel cell, a hydrogen circulation mode is adopted to separate liquid water so as to avoid damage to the fuel cell, and the following technical scheme is adopted:
a fuel cell end plate integrating hydrogen-water separation function comprises a fuel cell membrane electrode 1, a fuel cell end plate 2 is fixedly connected to the right side of the fuel cell membrane electrode 1, electric heating wires 212 are fixedly connected to the top and the bottom of an inner cavity of the fuel cell end plate 2 respectively, the electric heating wires 212 are located at the bottom of a water discharge valve 203 and the top of a hydrogen discharge valve 206 respectively, a hydrogen outlet flow channel inside the fuel cell end plate 2 is C-shaped, a flow channel baffle plate 204 is installed inside the hydrogen outlet flow channel to facilitate hydrogen-water separation, a hydrogen circuit water separation device is integrated inside the fuel cell end plate 2, the hydrogen circuit water discharge valve 203, the hydrogen discharge valve 206 and a hydrogen discharge pressure sensor 208 are integrated on the end plate at the same time, the number of system components and pipelines is reduced, the system volume is reduced, fuel cell system integration is facilitated, residual hydrogen, gaseous water and liquid water reacted by a connecting pipe, liquid water is stored at the bottom of an inner cavity of a flow passage of a fuel cell end plate 2, the liquid water is discharged by controlling the opening of a drain valve 203, the stack hydrogen path is prevented from flooding, residual hydrogen and gaseous water flow upwards through the flow passage in the fuel cell end plate 2 and flow from a hydrogen outlet of the fuel cell end plate 2 to a circulation loop to be circulated back to the stack, the hydrogen is favorable for recycling, a containing cavity is formed at the bottom of the hydrogen flow passage in the fuel cell end plate 2 to be favorable for storing the liquid water, the fuel cell end plate 2 integrates a water distribution function, a hydrogen circulating pump 3 is communicated with the fuel cell end plate 2 through a pipeline to directly circulate the residual hydrogen after water distribution to a hydrogen inlet of the stack for reutilization, the bottom on the right side of the fuel cell end plate 2 is communicated with a connecting pipe 6, the top of the inner cavity of the connecting pipe 6 is fixedly connected with a hydrogen inlet pressure sensor 4, the top of the connecting pipe 6 is communicated with a hydrogen circulating pump 3 through a pipeline, and the left side of the hydrogen circulating pump 3 is communicated with the right side of the fuel cell end plate 2 through a pipeline.
The hydrogen supply device 5 of the fuel cell system leads external hydrogen into the fuel cell end plate 2, the fuel cell end plate 2 is communicated with the fuel cell membrane electrode 1 through a flow channel, the hydrogen and air carry out electrochemical reaction in the fuel cell membrane electrode 1, water generated at the air side of the fuel cell membrane electrode 1 permeates to the hydrogen side due to concentration step, redundant hydrogen and liquid water are discharged from the hydrogen side of the fuel cell, a hydrogen outlet in the fuel cell end plate 2 is connected with the hydrogen circulating pump 3, the hydrogen is circulated to the front section of the hydrogen supply device 5, the hydrogen is recycled, the hydrogen inlet pressure is monitored by the hydrogen inlet pressure sensor 4, and the hydrogen supply device 5 is adjusted in real time.
Liquid water, excessive hydrogen and a small amount of nitrogen on the hydrogen side of the electric pile enter the fuel cell end plate 2 through the membrane electrode hydrogen outlet 202, the bottom of a hydrogen flow passage in the fuel cell end plate 2 is provided with a containing cavity which is beneficial to storing the liquid water, the hydrogen flow passage containing cavity of the fuel cell end plate 2 is C-shaped, a flow passage baffle plate 204 is arranged in the hydrogen flow passage containing cavity, the liquid water is separated from the hydrogen due to the action of gravity and the flow passage baffle plate 204 and is converged in the hydrogen flow passage bottom containing cavity, and the liquid water can be discharged out of the fuel cell end plate 2 by opening a drain valve 203.
The hydrogen gas flows in the fuel cell end plate 2 from the bottom membrane electrode hydrogen outlet 202 to the upper portion, and flows out from the end plate hydrogen outlet 207 to the hydrogen circulation pump 3 through the flow channel baffle 204.
The middle part of the hydrogen flow channel is provided with a hydrogen outlet pressure sensor 208 for monitoring the hydrogen pressure at the outlet of the galvanic pile, and the upper part of the hydrogen flow channel is provided with a hydrogen discharge valve 206 for discharging hydrogen and nitrogen and improving the hydrogen concentration in the galvanic pile.
2. In order to solve on the automobile-used fuel cell system, the pile passes through the pipeline with the water knockout drum to be connected, and the water knockout drum passes through the tube coupling with drain valve, hydrogen discharge valve equally, and the water knockout drum also passes through the pipeline with hydrogen circulating device to be connected, and water knockout drum and connecting line have occupied partly space of system, the lower problem of integrated level adopts following technical scheme:
the fuel cell end plate 2 comprises a cooling liquid inlet 201, a membrane electrode hydrogen outlet 202, a water discharge valve 203, a flow channel baffle 204, an air inlet 205, a hydrogen discharge valve 206, an end plate hydrogen outlet 207, a hydrogen discharge pressure sensor 208, a hydrogen inlet 209, a cooling liquid outlet 210 and an air outlet 211, wherein the water discharge valve 203, the hydrogen discharge valve 206 and the hydrogen discharge pressure sensor 208 are movably connected with the fuel cell end plate 2 through bolts, the hydrogen discharge valve 206 is positioned at the upper part of the fuel cell end plate 2 and communicated with a hydrogen flow channel in the fuel cell end plate 2, the opening of the hydrogen discharge valve 206 is controlled for discharging hydrogen and nitrogen, liquid water is conveniently discharged out of the end plate through the water discharge valve 203 arranged at the bottom of the hydrogen outlet flow channel in the fuel cell end plate 2, the water accumulation is prevented, the flow channel is blocked, and nitrogen in a hydrogen gas channel is conveniently discharged through the hydrogen discharge valve 206 arranged at the top of the hydrogen outlet flow channel, guarantee the hydrogen concentration of hydrogen gas circuit, drain valve 203, drain valve 206 and hydrogen go out pressure sensor 208 all through bolt and fuel cell end plate 2 swing joint, with drain valve 203 through setting up the bolt, drain valve 206 and hydrogen go out pressure sensor 208 and directly are connected with fuel cell end plate 2, the system volume can be reduced, power density is improved, support piece that compresses tightly as the pile through fuel cell end plate 2, under the prerequisite that the assurance end plate does not reduce pile supporting effect, through design and processing to the terminal plate vacant region, form the effect that has the separation of water, can reduce water knockout drum and connecting line on the fuel cell system, improve the integrated level of system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A fuel cell end plate integrating a hydrogen-water separation function, comprising a fuel cell membrane electrode (1), characterized in that: the right side of the fuel cell membrane electrode (1) is fixedly connected with a fuel cell end plate (2), the bottom of the right side of the fuel cell end plate (2) is communicated with a connecting pipe (6), the top of the inner cavity of the connecting pipe (6) is fixedly connected with a hydrogen inlet pressure sensor (4), the right end of the connecting pipe (6) is communicated with a hydrogen supply device (5), the top of the connecting pipe (6) is communicated with a hydrogen circulating pump (3) through a pipeline, and the left side of the hydrogen circulating pump (3) is communicated with the right side of the fuel cell end plate (2) through a pipeline;
the fuel cell end plate (2) comprises a cooling liquid inlet (201), a membrane electrode hydrogen outlet (202), a drain valve (203), a flow channel baffle plate (204), an air inlet (205), a hydrogen drain valve (206), an end plate hydrogen outlet (207), a hydrogen outlet pressure sensor (208), a hydrogen inlet (209), a cooling liquid outlet (210) and an air outlet (211).
2. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: the drain valve (203), the hydrogen discharge valve (206) and the hydrogen outlet pressure sensor (208) are movably connected with the fuel cell end plate (2) through bolts.
3. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: the top and the bottom of the inner cavity of the fuel cell end plate (2) are fixedly connected with electric heating wires (212), and the electric heating wires (212) are respectively positioned at the bottom of the drain valve (203) and the top of the hydrogen discharge valve (206).
4. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: the hydrogen outlet flow channel in the fuel cell end plate (2) is C-shaped, and the flow channel baffle plate (204) is arranged in the hydrogen outlet flow channel.
5. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: the hydrogen gas circuit water separation device is integrated in the fuel cell end plate (2), and meanwhile, a hydrogen gas circuit drain valve (203), a hydrogen discharge valve (206) and a hydrogen discharge pressure sensor (208) are integrated on the end plate.
6. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: and residual hydrogen, gaseous water and liquid water reacted by the connecting pipe (6) are separated in the fuel cell end plate (2), and the liquid water is stored at the bottom of the inner cavity of the flow channel of the fuel cell end plate (2).
7. The fuel cell end plate that collects hydrogen gas separation functions according to claim 6, characterized in that: the residual hydrogen and the gaseous water flow upwards through the flow channel in the fuel cell end plate (2) and flow to the circulation loop from the hydrogen outlet of the fuel cell end plate (2).
8. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: the hydrogen discharge valve (206) is positioned at the upper part of the fuel cell end plate (2) and is communicated with a hydrogen flow channel in the fuel cell end plate (2).
9. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: the bottom of a hydrogen flow channel in the fuel cell end plate (2) is provided with a cavity.
10. The fuel cell end plate that collects hydrogen gas separation function according to claim 1, characterized in that: the integrated water distribution function of the fuel cell end plate (2), and the hydrogen circulating pump (3) is communicated with the fuel cell end plate (2) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921290990.1U CN210296521U (en) | 2019-08-11 | 2019-08-11 | Fuel cell end plate with hydrogen-water separation function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921290990.1U CN210296521U (en) | 2019-08-11 | 2019-08-11 | Fuel cell end plate with hydrogen-water separation function |
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| CN210296521U true CN210296521U (en) | 2020-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350227A (en) * | 2019-08-11 | 2019-10-18 | 河南豫氢动力有限公司 | A kind of fuel cell end plate collecting hydrogen water separation function |
| CN113745583A (en) * | 2021-09-07 | 2021-12-03 | 烟台东德实业有限公司 | Integrated gas-water separator for fuel cell |
-
2019
- 2019-08-11 CN CN201921290990.1U patent/CN210296521U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350227A (en) * | 2019-08-11 | 2019-10-18 | 河南豫氢动力有限公司 | A kind of fuel cell end plate collecting hydrogen water separation function |
| CN110350227B (en) * | 2019-08-11 | 2024-02-06 | 河南豫氢动力有限公司 | Fuel cell end plate with hydrogen-water separation function |
| CN113745583A (en) * | 2021-09-07 | 2021-12-03 | 烟台东德实业有限公司 | Integrated gas-water separator for fuel cell |
| CN113745583B (en) * | 2021-09-07 | 2022-04-08 | 烟台东德实业有限公司 | Integrated gas-water separator for fuel cell |
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