CN216250812U - Anti-surge air control device and vehicle-mounted fuel cell engine - Google Patents
Anti-surge air control device and vehicle-mounted fuel cell engine Download PDFInfo
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- CN216250812U CN216250812U CN202122766206.3U CN202122766206U CN216250812U CN 216250812 U CN216250812 U CN 216250812U CN 202122766206 U CN202122766206 U CN 202122766206U CN 216250812 U CN216250812 U CN 216250812U
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- 239000000446 fuel Substances 0.000 title claims abstract description 48
- 239000007789 gas Substances 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The utility model provides an anti-surge air control device and a vehicle-mounted fuel cell engine, belongs to the technical field of vehicle-mounted fuel cell engines, and solves the problems that the existing air control device is complex in control logic and easily causes surge of an air compressor. The device comprises an air compressor, an electric control three-way valve and a controller. The outlet of the air compressor is integrally connected with the inlet of the electric control three-way valve, so that the main path outlet and the bypass outlet of the electric control three-way valve are both used as the outlet of the air compressor; the output end of the controller is respectively connected with the air compressor and the control end of the electric control three-way valve, and the opening degree of the main path outlet and the opening degree of the bypass outlet are controlled to control the on-off of the main path gas and the bypass path gas. The goals of surge prevention and more efficient operation are achieved.
Description
Technical Field
The utility model relates to the technical field of vehicle-mounted fuel cell engines, in particular to an anti-surge air control device and a vehicle-mounted fuel cell engine.
Background
The air compressor is a very important part in a vehicle-mounted fuel cell engine, and mainly provides required air flow and air stack pressure for the fuel cell. The vehicle-mounted fuel cell engine has high requirements on the flow and pressure of air, and requires a high rotating speed and low power of an air compressor.
In the existing vehicle-mounted fuel cell engine, more parts are needed, the integration level is low, and the system integration is complex. The air compressor, the air intake throttle and the bypass valve need to be controlled simultaneously to control the pile-entering flow and pressure of the air path, so that the control logic is relatively complex. And, cause the air compressor machine surge easily, even cause the damage of air compressor machine.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide an anti-surge air control device and a vehicle-mounted fuel cell engine, which are used for solving the problems that the existing air control device is complex in control logic and is easy to cause surge of an air compressor.
On one hand, the embodiment of the utility model provides an anti-surge air control device, which comprises an air compressor, an electric control three-way valve and a controller, wherein the air compressor is connected with the electric control three-way valve; wherein,
the outlet of the air compressor is integrally connected with the inlet of the electric control three-way valve, so that the main path outlet and the bypass outlet of the electric control three-way valve are both used as the outlet of the air compressor;
the output end of the controller is respectively connected with the air compressor and the control end of the electric control three-way valve, and the opening degree of the main path outlet and the opening degree of the bypass outlet are controlled to control the on-off of the main path gas and the bypass path gas.
The beneficial effects of the above technical scheme are as follows: the air compressor and the three-way valve are integrated, and meanwhile, the control of the air compressor and the three-way valve can be realized by only using one controller, so that the integral integration level of the whole vehicle-mounted fuel cell engine is improved. The surge of the air compressor can be effectively avoided through the bypass function of the air compressor, and when the running state of the air compressor (namely the air flow and the pressure at the inlet and the main path outlet of the air compressor) is close to the surge line of the air compressor, the rotating speed and the opening degree of the bypass outlet of the air compressor are adjusted, so that the air compressor can be far away from the surge and the efficiency is improved.
Based on the further improvement of the device, the device also comprises an air filter; wherein,
the outlet of the air filter is integrally connected with the inlet of the air compressor, so that the inlet of the air filter is used as the inlet of the air compressor.
Further, the device also comprises an intercooler; wherein,
and a main path outlet of the air compressor is connected with an air inlet of the fuel cell stack through an intercooler.
Further, the apparatus also includes a humidifier; wherein,
and the main path outlet of the air compressor is connected with the air inlet of the fuel cell stack through an intercooler and a humidifier in sequence.
Further, the controller further comprises a data acquisition unit, a data processing and control unit and an execution unit which are connected in sequence.
Further, the data acquisition unit further comprises a pressure sensor and a flow meter which are respectively arranged at the inlet of the air compressor and the outlet of the main path.
Further, the controller controls the bypass outlet to be completely opened when the inlet air flow of the air compressor is higher than the surge line flow of the air compressor, and the opening degree of the main path outlet and the opening degree of the bypass outlet are set to be preset calibrated values when the inlet air flow of the air compressor is lower than the surge line flow of the air compressor.
Further, when the whole vehicle is shut down, the controller sets the opening degrees of the main path outlet and the bypass outlet of the air compressor to be preset calibrated values, so that the main path gas purges the fuel cell stack, and after the purging is carried out for a preset time, the main path outlet is controlled to be completely closed, and the bypass outlet is completely opened.
Further, the execution unit further comprises control switches for respectively controlling the opening degrees of the main path outlet and the bypass outlet, and a control switch for controlling the rotating speed of the air compressor.
Compared with the prior art, the further improvement scheme has at least one of the following beneficial effects:
1. when the whole vehicle is shut down, the outlet of the air compressor is automatically switched to the bypass path when the air compressor stops running, and the main path is in a sealing state at the moment, so that the air path of the fuel cell can be sealed, and the loss of the fuel cell stack caused by the fact that the air enters the stack to form a hydrogen-oxygen interface due to the leakage of the main path is avoided;
2. when the vehicle-mounted fuel cell engine is shut down, the air compressor can purge the fuel cell stack or reduce the concentration of tail exhaust hydrogen by controlling the opening of the three-way valve;
3. the integrated controller can prevent the air compressor from surging by opening the bypass path to release pressure when the running state of the air compressor is close to a surge protection line, so that the aim of protecting the air compressor is fulfilled;
4. the use of fewer parts may increase the integration of the system.
On the other hand, the embodiment of the utility model provides a vehicle-mounted fuel cell engine comprising the anti-surge air control device, and the vehicle-mounted fuel cell engine also comprises a fuel cell stack, a hydrogen injection device and a mixed exhaust pipe; wherein,
an air inlet of the fuel cell stack is connected with a main path outlet of the anti-surge air control device, and a hydrogen inlet is connected with an output end of the hydrogen spraying equipment; and a gas outlet of the fuel cell stack and a bypass outlet of the anti-surge air control device are respectively connected with the output end of the mixed exhaust pipe.
The technical scheme has the following beneficial effects: the use of fewer parts may increase the integration of the system. The controller can avoid the air compressor to surge by opening the bypass path to release pressure when the running state of the air compressor is close to a surge protection line (surge limit), and the purpose of protecting the air compressor is achieved.
The summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.
FIG. 1 shows a schematic diagram of the composition of an anti-surge air control apparatus of embodiment 1;
FIG. 2 shows a schematic diagram of the composition of the anti-surge air control apparatus of embodiment 2.
Reference numerals:
1-an air filter; 2-a flow meter; 3-air compressor motor for providing power to air compressor
4-an air compressor with a bypass function; 5-a controller; 6-an intercooler;
7-flow meter at bypass outlet; 8-a humidifier; 9-fuel cell stack;
10-hydrogen spraying equipment; 11-a source of hydrogen gas; 12-mixed calandria.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The term "include" and variations thereof as used herein is meant to be inclusive in an open-ended manner, i.e., "including but not limited to". Unless specifically stated otherwise, the term "or" means "and/or". The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like may refer to different or the same object. Other explicit and implicit definitions are also possible below.
Example 1
The embodiment of the utility model discloses an anti-surge air control device which comprises an air compressor, an electric control three-way valve and a controller.
The air compressor is a centrifugal air compressor used by a vehicle-mounted fuel cell engine and is used for providing stack gas meeting air flow and pressure requirements.
The electric control three-way valve is a valve which is controlled by voltage or current and is provided with an inlet and two outlets (a main path outlet and a bypass outlet).
The outlet of the air compressor is integrally connected with the inlet of the electric control three-way valve, so that the main path outlet and the bypass outlet of the electric control three-way valve are both used as the outlet of the air compressor; the output end of the controller is respectively connected with the air compressor and the control end of the electric control three-way valve.
The controller controls the opening of the main path outlet and the bypass outlet to control the on-off of the main path gas and the bypass path gas, so as to prevent surging.
The controller also includes a program for determining compressor surge, optionally, see patent 201820798483.8 or patent 202022204174.3.
Compared with the prior art, the air compressor and the three-way valve are integrated, and meanwhile, the control of the air compressor and the three-way valve can be realized only by using one controller, so that the overall integration level of the whole vehicle-mounted fuel cell engine is improved. The surge of the air compressor can be effectively avoided through the bypass function of the air compressor, and when the running state of the air compressor (namely the air flow and the pressure at the inlet and the main path outlet of the air compressor) is close to the surge line of the air compressor, the rotating speed and the opening degree of the bypass outlet of the air compressor are adjusted, so that the air compressor can be far away from the surge and the efficiency is improved.
Example 2
The improvement is made on the basis of the embodiment 1, and the anti-surge air control device also comprises an air filter. The outlet of the air filter is integrally connected with the inlet of the air compressor, so that the inlet of the air filter is used as the inlet of the air compressor, as shown in fig. 2.
Preferably, the anti-surge air control device further comprises an intercooler. Wherein, the main path outlet of the air compressor is connected with the air inlet of the fuel cell stack through an intercooler.
Preferably, the anti-surge air control device further comprises a humidifier; wherein, the main path outlet of the air compressor is connected with the air inlet of the fuel cell stack through an intercooler and a humidifier in sequence.
Preferably, the controller further comprises a data acquisition unit, a data processing and control unit and an execution unit which are connected in sequence.
And the data acquisition units are arranged at the inlet of the air compressor and the outlet of the main path, are used for monitoring the air flow and the pressure at the arrangement position in real time and sending the air flow and the pressure to the data processing and control unit.
Preferably, the data acquisition unit further comprises a pressure sensor and a flow meter respectively arranged at an inlet of the air compressor and an outlet of the main path.
And the data processing and control unit is used for judging whether the air compressor is likely to generate surge (see patent 201820798483.8 or patent 202022204174.3), and if the air compressor is likely to generate surge, the execution unit controls the air compressor to be far away from the surge and improves the efficiency.
And the execution unit is used for adjusting the rotating speed of the air compressor and the opening degrees (opening degrees) of the main path outlet and the bypass outlet according to the control of the data processing and control unit.
Preferably, the execution unit further comprises control switches for respectively controlling the opening degrees of the main path outlet and the bypass outlet, and a control switch for controlling the rotation speed of the air compressor.
Preferably, the controller controls the bypass outlet to be fully opened when the inlet air flow rate of the air compressor is higher than the flow rate of the surge line of the air compressor (see patent 201820798483.8 or patent 202022204174.3), and the opening degree of the main path outlet and the opening degree of the bypass outlet are set to be calibrated in advance when the inlet air flow rate of the air compressor is lower than the flow rate of the surge line of the air compressor.
Preferably, when the whole vehicle is shut down, the controller sets the opening degrees of the main path outlet and the bypass outlet of the air compressor to be preset calibrated values, so that the main path gas purges the fuel cell stack, and after the purging reaches a preset time, the main path outlet is controlled to be completely closed, and the bypass outlet is completely opened. So that the main path is sealed.
Compared with embodiment 1, the anti-surge air control device provided by the embodiment has the following beneficial effects:
1. when the whole vehicle is shut down, the outlet of the air compressor is automatically switched to the bypass path when the air compressor stops running, and the main path is in a sealing state at the moment, so that the air path of the fuel cell can be sealed, and the loss of the fuel cell stack caused by the fact that the air enters the stack to form a hydrogen-oxygen interface due to the leakage of the main path is avoided;
2. when the vehicle-mounted fuel cell engine is shut down, the air compressor can purge the fuel cell stack or reduce the concentration of tail exhaust hydrogen by controlling the opening of the three-way valve;
3. the integrated controller can prevent the air compressor from surging by opening the bypass path to release pressure when the running state of the air compressor is close to a surge protection line, so that the aim of protecting the air compressor is fulfilled;
4. the use of fewer parts may increase the integration of the system.
Example 3
In another embodiment of the utility model, a vehicle-mounted fuel cell engine is disclosed, which comprises a fuel cell stack, a hydrogen injection device and a mixed exhaust pipe in addition to the anti-surge air control device in embodiment 1 or 2.
The air inlet of the fuel cell stack is connected with the main path outlet of the anti-surge air control device, and the hydrogen inlet is connected with the output end of the hydrogen spraying equipment; and a gas outlet of the fuel cell stack and a bypass outlet of the anti-surge air control device are respectively connected with the output end of the mixed exhaust pipe.
The fuel cell stack is used as the most core component of a vehicle-mounted fuel cell engine and is used for providing electric energy.
The mixed exhaust pipe is used as a gas mixed exhaust pipeline.
Compared with the prior art, the vehicle-mounted fuel cell engine provided by the embodiment uses fewer parts and components, so that the integration level of the system can be increased. The controller can avoid the air compressor to surge by opening the bypass path to release pressure when the running state of the air compressor is close to a surge protection line (surge limit), and the purpose of protecting the air compressor is achieved.
The utility model does not relate to any software improvement, and only needs to connect the devices with corresponding functions through the connection relation given by the embodiment of the utility model. The connection mode between the hardware devices with the corresponding functions is realized by the prior art by those skilled in the art, and is not described in detail herein.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles of the embodiments, the practical application, or improvements made to the prior art, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. An anti-surge air control device is characterized by comprising an air compressor, an electric control three-way valve and a controller; wherein,
the outlet of the air compressor is integrally connected with the inlet of the electric control three-way valve, so that the main path outlet and the bypass outlet of the electric control three-way valve are both used as the outlet of the air compressor;
the output end of the controller is respectively connected with the air compressor and the control end of the electric control three-way valve, and the opening degree of the main path outlet and the opening degree of the bypass outlet are controlled to control the on-off of the main path gas and the bypass path gas.
2. The anti-surge air control device of claim 1, further comprising an air filter; wherein,
the outlet of the air filter is integrally connected with the inlet of the air compressor, so that the inlet of the air filter is used as the inlet of the air compressor.
3. The anti-surge air control device according to claim 1 or 2, further comprising an intercooler; wherein,
and a main path outlet of the air compressor is connected with an air inlet of the fuel cell stack through an intercooler.
4. The anti-surge air control device according to claim 3, further comprising a humidifier; wherein,
and the main path outlet of the air compressor is connected with the air inlet of the fuel cell stack through an intercooler and a humidifier in sequence.
5. The anti-surge air control device according to one of claims 1, 2 and 4, wherein the controller further comprises a data acquisition unit, a data processing and control unit and an execution unit which are connected in sequence.
6. The anti-surge air control device according to claim 5, wherein the data acquisition unit further comprises a pressure sensor and a flow meter respectively disposed at an inlet of the air compressor and an outlet of the main path.
7. The surge-preventing air control device of claim 6 wherein the controller controls the bypass outlet to be fully open when the air compressor inlet air flow is above the air compressor surge line flow, and the main path outlet opening and the bypass outlet opening are set to pre-calibrated values when the air compressor inlet air flow is below the air compressor surge line flow.
8. The anti-surge air control device according to claim 6 or 7, wherein the controller sets the opening degrees of the main path outlet and the bypass outlet of the air compressor to preset values when the entire vehicle is shut down, so that the main path gas purges the fuel cell stack, and after the purging reaches a preset time, the main path outlet is controlled to be completely closed, and the bypass outlet is controlled to be completely opened.
9. The anti-surge air control device according to claim 8, wherein the execution unit further comprises control switches for controlling the opening degrees of the main path outlet and the bypass outlet, respectively, and a control switch for controlling the rotation speed of the air compressor.
10. A vehicle-mounted fuel cell engine comprising the surge-preventing air control device according to any one of claims 1 to 9, further comprising a fuel cell stack, a hydrogen injection device, and a mixing and exhausting pipe; wherein,
an air inlet of the fuel cell stack is connected with a main path outlet of the anti-surge air control device, and a hydrogen inlet is connected with an output end of the hydrogen spraying equipment; and a gas outlet of the fuel cell stack and a bypass outlet of the anti-surge air control device are respectively connected with the output end of the mixed exhaust pipe.
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| CN202122766206.3U CN216250812U (en) | 2021-11-12 | 2021-11-12 | Anti-surge air control device and vehicle-mounted fuel cell engine |
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| CN202122766206.3U CN216250812U (en) | 2021-11-12 | 2021-11-12 | Anti-surge air control device and vehicle-mounted fuel cell engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115799568A (en) * | 2023-01-19 | 2023-03-14 | 国家电投集团氢能科技发展有限公司 | Fuel cell cathode system and control method thereof |
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- 2021-11-12 CN CN202122766206.3U patent/CN216250812U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115799568A (en) * | 2023-01-19 | 2023-03-14 | 国家电投集团氢能科技发展有限公司 | Fuel cell cathode system and control method thereof |
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