CN115000482A - Fuel cell stack and vibration reduction method thereof - Google Patents
Fuel cell stack and vibration reduction method thereof Download PDFInfo
- Publication number
- CN115000482A CN115000482A CN202210941861.4A CN202210941861A CN115000482A CN 115000482 A CN115000482 A CN 115000482A CN 202210941861 A CN202210941861 A CN 202210941861A CN 115000482 A CN115000482 A CN 115000482A
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- fuel cell
- air
- end plate
- cell stack
- rear end
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/2475—Enclosures, casings or containers of fuel cell stacks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/248—Means for compression of the fuel cell stacks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/06—Fluid filling or discharging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/08—Sensor arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
-
- 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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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a fuel cell stack and a vibration reduction method thereof, wherein the fuel cell stack comprises a pack shell and a stack, the stack is fixed in the pack shell, and the pack shell is used for protecting the whole stack; the electric pile comprises a fuel cell, a front end plate, a rear end plate and a plurality of side baffles; the front end plate is arranged on the front end face of the fuel cell, the rear end plate is arranged on the rear end face of the fuel cell, the side baffle is arranged on the side face of the fuel cell, the front end plate and the rear end plate are fixedly connected through the side baffle, the front end plate and the rear end plate are used for pressing the fuel cell front and back together, and the side baffle is used for fixing the connection between the front end plate and the rear end plate and fixing the fuel cell; the electric pile also comprises a plurality of air cushions, the air cushions are arranged in the gap between the side baffle and the fuel cell, and the air cushions are used for preventing the side baffle and the fuel cell from directly colliding. The invention can reduce the vibration of the fuel cell and prevent the fuel cell from dislocation, thereby better protecting the safety of the galvanic pile.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a fuel cell stack and a vibration reduction method thereof.
Background
Hydrogen fuel, a clean, pollution-free renewable energy source, is being used in an increasing number of fields. The hydrogen fuel cell can convert hydrogen into electric energy and heat energy, and when in work, the hydrogen fuel cell not only has high generating efficiency, but also has the advantages of low noise, no pollution and the like.
Wherein, prior art's fuel cell pile mainly comprises pile, end plate, side shield and pack shell, and the pile comprises the stack of multi-disc monocell stack, and two end plates compress tightly the pile about using, and the side shield that reuses withstands the pile in each side of pile, and the side shield is fixed with the end plate, all installs in the pack shell again to fixed end plate.
However, for such fixing method, when the fuel cell stack encounters a large external vibration, the stack is formed by stacking a plurality of single cells (or a plurality of bipolar plates) and is stacked by pressing, under the action of vibration and inertia, a bipolar plate is thrown away, and the bipolar plate collides with a side baffle, so that the bipolar plate is dislocated, which affects the operation of the whole stack. When a certain bipolar plate collides, each bipolar plate needs to be disassembled again for inspection and maintenance, and after maintenance, the bipolar plates need to be stacked again and the performance of the galvanic pile needs to be tested again, so that time and labor are wasted, and the cost is greatly increased. If the direct collision between the single cells in the fuel cell stack and the baffle plate can be prevented under the condition that the fuel cell stack is subjected to large external vibration, the fuel cell stack can be better protected.
Disclosure of Invention
The present invention provides a fuel cell stack and a vibration damping method thereof to solve one of the above technical problems, which can prevent the fuel cell stack from damping vibration when the fuel cell stack encounters external large vibration, and prevent the fuel cell from dislocation, thereby better protecting the safety of the stack.
In order to solve the technical problems, the invention provides the following technical scheme: a fuel cell stack comprises a pack shell and a stack, wherein the stack is fixed inside the pack shell, and the pack shell is used for protecting the whole stack; the electric pile comprises a fuel cell, a front end plate, a rear end plate and a plurality of side baffles; the front end plate is arranged on the front end face of the fuel cell, the rear end plate is arranged on the rear end face of the fuel cell, the side baffle is arranged on the side face of the fuel cell, the front end plate and the rear end plate are fixedly connected through the side baffle, the front end plate and the rear end plate are used for pressing the fuel cell back and forth together, and the side baffle is used for fixing the connection between the front end plate and the rear end plate and fixing the fuel cell; the electric pile also comprises a plurality of air cushions, the air cushions are arranged in the gap between the side baffle and the fuel cell, and the air cushions are used for damping the fuel cell and preventing the fuel cell from being misplaced.
Furthermore, the galvanic pile further comprises an air blowing device and a plurality of gas pipes, wherein the air blowing device is connected with the gas cushion through the gas pipes, and the air blowing device is used for inflating the gas cushion.
Furthermore, the blowing device also comprises a plurality of air valves, the air valves are arranged at the pipe orifice between the gas pipe and the blowing device, and the air valves are used for controlling gas to enter and exit the gas pipe.
Furthermore, the air blowing device comprises an air blowing opening, and the air blowing device blows and sweeps the interior of the pack shell through the air blowing opening.
Further, the air cushion comprises an air pressure sensor, and the air pressure sensor is used for detecting the air pressure inside the air cushion.
Another object of the present invention is to provide a method for damping vibration of a fuel cell stack, which is operated on the fuel cell stack, comprising the steps of:
monitoring the air pressure of the air cushion in real time, when the air pressure is lower than a certain threshold value, purging the air cushion by using a blowing device, and stopping purging when the air pressure of the air cushion is purged to a specified threshold value;
when the fuel cell stack encounters external vibration, the air cushion damps the fuel cell, so that the fuel cell is prevented from being misplaced;
and the blowing device is used for blowing the inside of the pack shell at regular time.
After the technical scheme is adopted, the invention at least has the following beneficial effects: the invention prevents the dislocation of the bipolar plate of the fuel cell by arranging the air cushion under the condition that the fuel cell stack encounters large external vibration, and can avoid the direct collision of the bipolar plate of the fuel cell with the side baffle if serious, thereby greatly protecting the fuel cell; because the air in the air cushion can be slowly reduced along with the lapse of time, the invention passes the monitoring of the baroceptor, under the situation that the atmospheric pressure in the air cushion is lower than certain threshold value, the air blowing device will open the air valve and inflate the air cushion; in addition, the blowing device is provided with the blowing port, and the blowing device can blow the pack shell through the blowing port at regular time, so that liquid accumulated in the pack shell can be dried.
Drawings
Fig. 1 is a schematic structural view of a cell stack in example 1.
Fig. 2 is a schematic structural diagram of the pack case in embodiment 1.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present application is further described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
The embodiment discloses a fuel cell stack, as shown in fig. 1 and fig. 2, which includes a pack housing 1 and a stack 2, wherein the stack 2 is fixed inside the pack housing 1, and the pack housing 1 is used for protecting the stack 2 as a whole; the electric pile 2 comprises a fuel cell 21, a front end plate 22, a rear end plate 23 and a plurality of side baffle plates 24; the fuel cell 21 is composed of a plurality of single cells, and each single cell is composed of two bipolar plates and a membrane electrode; the front end plate 22 is arranged on the front end face of the fuel cell 21, the rear end plate 23 is arranged on the rear end face of the fuel cell 21, the side baffle plate 24 is arranged on the side face of the fuel cell 21, the front end plate 22 and the rear end plate 23 are fixedly connected through the side baffle plate 24, the front end plate 22 and the rear end plate 23 are used for pressing the fuel cell 21 back and forth together, and the side baffle plate 24 is used for fixing the connection between the front end plate 22 and the rear end plate 23 and fixing the fuel cell 21.
The electric pile 2 also comprises a plurality of air cushions 25, the air cushions 25 are arranged in the gaps between the side baffles 24 and the fuel cells 21, and the air cushions 25 are used for damping the vibration of the fuel cells 21 and preventing the fuel cells 21 from dislocation.
The galvanic pile 2 further comprises an air blowing device 26 and a plurality of air pipes 27, wherein the air blowing device 26 is connected with the air cushion 25 through the air pipes 27, and the air blowing device 26 is used for blowing air to the air cushion 25; the air blowing device 26 is externally connected to an air compressor of the fuel cell system.
The air blowing device 26 comprises an air blowing port, and the air blowing device 26 blows the interior of the pack housing 1 through the air blowing port.
The blowing device 26 further comprises a plurality of air valves, the air valves are arranged at the pipe openings between the air pipes 27 and the blowing device 26, and the air valves are used for controlling air to enter and exit the air pipes 27.
The air cushion 25 comprises an air pressure sensor for detecting the air pressure inside the air cushion 25; preferably, the air pressure sensor is built into the air cushion 25.
In the embodiment, the air cushion 25 is arranged, so that the bipolar plate of the fuel cell 21 is prevented from being dislocated when the fuel cell stack encounters large external vibration, and the bipolar plate of the fuel cell 21 can be prevented from directly colliding with the side baffle 24 if serious, so that the fuel cell 21 is greatly protected; because the air in the air cushion can be slowly reduced along with the time, the air blowing device 26 can open the air valve and inflate the air cushion under the condition that the air pressure in the air cushion is lower than a certain threshold value through the monitoring of the air pressure sensor; in addition, by arranging a blowing port on the blowing device 26, the blowing device 26 can blow the pack shell 1 through the blowing port at regular time, and the liquid accumulated in the pack shell 1 can be dried.
Example 2
The embodiment discloses a vibration reduction method of a fuel cell stack on the basis of embodiment 1, which comprises the following steps:
monitoring the air pressure of the air cushion 25 in real time, when the air pressure is lower than a certain threshold value, blowing the air cushion 25 by a blowing device 26, and stopping blowing when the air pressure of the air cushion 25 is blown to a specified threshold value;
when the fuel cell stack encounters external vibration, the air cushion 25 damps the vibration of the fuel cell, and prevents the bipolar plate of the fuel cell 21 from dislocation; if the bipolar plate is dislocated, the bipolar plate of the fuel cell 21 may collide with the side baffle 24 seriously, so that the bipolar plate is deformed, further the fuel cell 21 is leaked and leaked, and the fuel cell 21 cannot work normally;
the air blowing device 26 is used for blowing the inside of the pack shell 1 at regular time.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various equivalent changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (7)
1. A fuel cell stack comprises a pack shell and a stack, wherein the stack is fixed inside the pack shell, and the pack shell is used for protecting the whole stack; the electric pile comprises a fuel cell, a front end plate, a rear end plate and a plurality of side baffles; the front end plate is arranged on the front end face of the fuel cell, the rear end plate is arranged on the rear end face of the fuel cell, the side baffle is arranged on the side face of the fuel cell, the front end plate and the rear end plate are fixedly connected through the side baffle, the front end plate and the rear end plate are used for pressing the fuel cell back and forth together, and the side baffle is used for fixing the connection between the front end plate and the rear end plate and fixing the fuel cell; the fuel cell stack is characterized by further comprising a plurality of air cushions, wherein the air cushions are arranged in gaps between the side baffles and the fuel cells and are used for damping the vibration of the fuel cells and preventing the fuel cells from being dislocated.
2. The fuel cell stack according to claim 1, further comprising an air blowing device and a plurality of air pipes, wherein the air blowing device is connected to the air cushion through the air pipes, and the air blowing device is used for blowing air to the air cushion.
3. The fuel cell stack according to claim 2, wherein the blowing device further comprises a plurality of gas valves, the gas valves are arranged at the pipe orifice between the gas transmission pipe and the blowing device, and the gas valves are used for controlling gas to enter and exit the gas transmission pipe.
4. The fuel cell stack according to claim 2, wherein the air blowing means includes an air blowing port through which the air blowing means blows the inside of the pack case.
5. The fuel cell stack of claim 4 wherein the air cushion includes an air pressure sensor for sensing air pressure within the air cushion.
6. A method of damping vibration of a fuel cell stack, which operates on a fuel cell stack according to claim 5, comprising the steps of:
monitoring the air pressure of the air cushion in real time, when the air pressure is lower than a certain threshold value, purging the air cushion by using a blowing device, and stopping purging when the air pressure of the air cushion is purged to a specified threshold value;
when the fuel cell stack suffers from external vibration, the air cushion damps the fuel cell, and prevents the fuel cell from dislocation.
7. The method of damping vibration of a fuel cell stack according to claim 6, further comprising the steps of: and the blowing device is used for blowing the inside of the pack shell at regular time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210941861.4A CN115000482A (en) | 2022-08-08 | 2022-08-08 | Fuel cell stack and vibration reduction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210941861.4A CN115000482A (en) | 2022-08-08 | 2022-08-08 | Fuel cell stack and vibration reduction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115000482A true CN115000482A (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210941861.4A Pending CN115000482A (en) | 2022-08-08 | 2022-08-08 | Fuel cell stack and vibration reduction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115000482A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6720101B1 (en) * | 2001-06-08 | 2004-04-13 | Palcan Fuel Cell Co. Ltd | Solid cage fuel cell stack |
| CN214280039U (en) * | 2021-01-29 | 2021-09-24 | 上海神力科技有限公司 | Fuel cell stack fastening structure for improving contact resistance |
| CN113506894A (en) * | 2021-06-16 | 2021-10-15 | 福建亚南电机有限公司 | Fuel cell and control method thereof |
| CN215119086U (en) * | 2021-04-27 | 2021-12-10 | 南通百应能源有限公司 | Damping structure for fuel cell stack |
| CN216903015U (en) * | 2022-01-19 | 2022-07-05 | 陕西西部智联新能源产业集团有限公司 | Protection device with compression-resistant structure for hydrogen fuel cell |
-
2022
- 2022-08-08 CN CN202210941861.4A patent/CN115000482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6720101B1 (en) * | 2001-06-08 | 2004-04-13 | Palcan Fuel Cell Co. Ltd | Solid cage fuel cell stack |
| CN214280039U (en) * | 2021-01-29 | 2021-09-24 | 上海神力科技有限公司 | Fuel cell stack fastening structure for improving contact resistance |
| CN215119086U (en) * | 2021-04-27 | 2021-12-10 | 南通百应能源有限公司 | Damping structure for fuel cell stack |
| CN113506894A (en) * | 2021-06-16 | 2021-10-15 | 福建亚南电机有限公司 | Fuel cell and control method thereof |
| CN216903015U (en) * | 2022-01-19 | 2022-07-05 | 陕西西部智联新能源产业集团有限公司 | Protection device with compression-resistant structure for hydrogen fuel cell |
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Application publication date: 20220902 |
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