CN219675828U - System for monitoring hydrogen system of fuel cell automobile and fuel cell automobile - Google Patents

System for monitoring hydrogen system of fuel cell automobile and fuel cell automobile Download PDF

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Publication number
CN219675828U
CN219675828U CN202223373050.3U CN202223373050U CN219675828U CN 219675828 U CN219675828 U CN 219675828U CN 202223373050 U CN202223373050 U CN 202223373050U CN 219675828 U CN219675828 U CN 219675828U
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China
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hydrogen
sampling tank
concentration
way valve
fuel cell
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CN202223373050.3U
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Chinese (zh)
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陈聪
曾倩楠
李贵鹏
李言辰
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Abstract

The utility model relates to a system for monitoring a hydrogen system of a fuel cell automobile and the fuel cell automobile, which enable hydrogen to enter a hydrogen sampling tank (6), enable a detector (8) to receive detection light formed by infrared light emitted by an infrared light source (4) penetrating through the hydrogen sampling tank (6), and obtain a real-time infrared spectrogram of the hydrogen; comparing the real-time infrared spectrogram with an infrared spectrogram of standard hydrogen through a spectrum contrast analyzer (9), and judging the concentration of the hydrogen; the whole vehicle control unit (10) selectively gives an alarm according to the hydrogen concentration judged by the spectrum contrast analyzer (9). The system and the control method can realize the real-time monitoring of the hydrogen, and are beneficial to prolonging the service life of the fuel cell.

Description

System for monitoring hydrogen system of fuel cell automobile and fuel cell automobile
Technical Field
The utility model relates to the field of fuel cell automobiles, in particular to a system for monitoring a hydrogen system of a fuel cell automobile and the fuel cell automobile.
Background
The hydrogen for the fuel cell can come from fossil resource hydrogen production (natural gas reforming hydrogen production, petroleum cracking, coal hydrogen production and the like), renewable resource hydrogen production (water electrolysis, solar hydrogen production, biomass hydrogen production and the like) and process byproduct hydrogen (chlor-alkali chemical hydrogen, refinery gas, blast furnace gas and the like), and the complexity and diversity of impurity composition are determined by the hydrogen source. As fuel hydrogen gas, the purity and the kind and content of impurities contained therein have an important influence on the discharge performance and life of the hydrogen fuel cell. Because the electrode of the hydrogen fuel cell is made of special porous materials, if the electrode is greatly irreversibly damaged by carbon-containing compounds, such as carbon monoxide, carbon dioxide, methane and the like, the electrode is permanently damaged.
In the prior art, the detection of impurities in hydrogen in a hydrogen system of a hydrogen fuel cell is mainly concentrated in the hydrogen production and storage process. O in high purity gas or mixed gas is generally purified by gas chromatography in combination with plasma emission technique (GC-PED) 2 ,N 2 ,CH 4 ,CO 2 But the required equipment is expensive, the cost is high, and the hydrogen health degree of the hydrogen fuel cell cannot be directly identified in the use process of the hydrogen, so that the hydrogen is monitored on line.
Disclosure of Invention
The utility model aims to provide a system for monitoring a hydrogen system of a fuel cell automobile and the fuel cell automobile, which solve the problem that the concentration of hydrogen cannot be monitored on line in the using process of the hydrogen fuel cell in the prior art.
To achieve the above object, a first aspect of the present utility model provides a system for monitoring a hydrogen system of a fuel cell vehicle, the system comprising: the hydrogen sampling unit is used for diluting the hydrogen of the hydrogen system; the infrared spectrum analysis unit is used for monitoring the hydrogen diluted by the hydrogen sampling unit; the whole vehicle control unit is used for receiving the concentration signal of the hydrogen and sending an early warning signal when the concentration of the hydrogen is lower than the healthy concentration; the hydrogen sampling unit comprises a hydrogen sampling tank; the inlet of the feeding pipeline of the hydrogen sampling tank is used for being communicated with a hydrogen system of a fuel automobile; the infrared spectrum analysis unit comprises an infrared light source, a detector and a spectrum contrast analyzer; the hydrogen sampling tank is arranged on a light path formed by the infrared light source and the detector, and the light path penetrates through the hydrogen sampling tank; the spectrum contrast analyzer is electrically connected with the detector and the whole vehicle control unit; the spectrum contrast analyzer receives the signal of the detector and is used for judging the concentration of the hydrogen and sending a concentration signal of the hydrogen to the whole vehicle control unit.
Optionally, a pressure reducing valve is arranged on a feed line of the hydrogen sampling tank and is used for reducing the pressure of the hydrogen system.
Optionally, an air inlet one-way valve is further arranged on the feed pipe line of the hydrogen sampling tank, and a pressure gauge is arranged on the hydrogen sampling tank; the whole vehicle control unit is electrically connected with the pressure gauge and the air inlet one-way valve and is used for receiving signals of the pressure gauge and controlling the opening and closing of the air inlet one-way valve.
Optionally, the intake check valve is disposed on a line between the hydrogen sampling tank and the pressure reducing valve.
Optionally, the hydrogen sampling unit further comprises an air outlet one-way valve, and the air outlet one-way valve is arranged on a discharging pipeline of the hydrogen sampling tank; the outlet of the discharging pipeline of the hydrogen sampling tank is communicated with the atmosphere; the whole vehicle control unit is electrically connected with the air outlet one-way valve and used for controlling the opening and closing of the air outlet one-way valve.
Optionally, the hydrogen sampling tank is provided with KBr window sheets at the inlet of the optical path and the outlet of the optical path.
Optionally, the infrared spectrum analysis unit further comprises an interferometer, and the interferometer is arranged on an optical path between the infrared light source and the hydrogen sampling tank.
Optionally, the infrared light source is selected from one of yttrium aluminum garnet laser and neodymium glass solid state laser.
Optionally, the whole vehicle control unit comprises an alarm device; the alarm device is used for receiving the signal that the hydrogen concentration judged by the spectrum contrast analyzer is lower than the healthy concentration and sending out an alarm signal.
A second aspect of the utility model provides a fuel cell vehicle comprising the system of the first aspect of the utility model.
Through the technical scheme, hydrogen enters the hydrogen sampling tank, the detector receives detection light formed by infrared light emitted by the infrared light source penetrating through the hydrogen sampling tank, and a real-time infrared spectrogram of the hydrogen is obtained; comparing the real-time infrared spectrogram with an infrared spectrogram of standard hydrogen through a spectrum contrast analyzer, and judging the concentration of the hydrogen; and the whole vehicle control unit selectively gives an alarm according to the hydrogen concentration judged by the spectrum contrast analyzer. The system and the control method can realize the real-time monitoring of the hydrogen, and are beneficial to prolonging the service life of the fuel cell.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:
FIG. 1 is a schematic diagram of a system for monitoring a hydrogen system of a fuel cell vehicle in accordance with the present utility model.
Description of the reference numerals
1. A hydrogen system; 2. a pressure reducing valve; 3. an air inlet one-way valve; 4. an infrared light source; 5. an interferometer; 6. a hydrogen sampling tank; 7. an air outlet one-way valve; 8. a detector; 9. a spectral contrast analyzer; 10. and the whole vehicle control unit.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
As shown in fig. 1, a first aspect of the present utility model provides a system for monitoring a hydrogen system of a fuel cell vehicle, the system comprising: a hydrogen sampling unit for diluting hydrogen of the hydrogen system 1; the infrared spectrum analysis unit is used for monitoring the hydrogen diluted by the hydrogen sampling unit; the whole vehicle control unit 10 is used for receiving the concentration signal of the hydrogen and sending out an early warning signal when the concentration of the hydrogen is lower than the healthy concentration; the hydrogen sampling unit comprises a hydrogen sampling tank 6; the inlet of the feed line of the hydrogen sampling tank 6 is used for communicating with the hydrogen system 1 of the fuel automobile; the infrared spectrum analysis unit comprises an infrared light source 4, a detector 8 and a spectrum contrast analyzer 9; the hydrogen sampling tank 6 is arranged on an optical path formed by the infrared light source 4 and the detector 8, and the optical path penetrates through the hydrogen sampling tank 6; the spectrum contrast analyzer 9 is electrically connected with the detector 8 and the whole vehicle control unit 10; the spectrum contrast analyzer 9 receives the signal of the detector 8, and is configured to determine the concentration of hydrogen and send a concentration signal of hydrogen to the whole vehicle control unit 10.
Through the technical scheme, hydrogen enters the hydrogen sampling tank 6, the detector 8 receives detection light formed by the infrared light emitted by the infrared light source 4 penetrating through the hydrogen sampling tank 6, and a real-time infrared spectrogram of the hydrogen is obtained; comparing the real-time infrared spectrogram with an infrared spectrogram of standard hydrogen through a spectrum contrast analyzer 9, and judging the concentration of the hydrogen; the whole vehicle control unit 10 selectively gives an alarm according to the hydrogen concentration judged by the spectrum contrast analyzer 9. The system and the control method can realize the real-time monitoring of the hydrogen, and are beneficial to prolonging the service life of the fuel cell.
When the concentration of the hydrogen output by the hydrogen system is more than 99.9 volume percent, the hydrogen is considered to be in a healthy concentration, namely the hydrogen is in a healthy state; when the concentration of hydrogen gas output from the hydrogen system is less than 99.9% by volume, the hydrogen gas is considered to be at an unhealthy concentration, i.e., the hydrogen gas is in an unhealthy state.
Wherein, the feed line of the hydrogen sampling tank 6 is provided with a pressure reducing valve 2 for reducing the pressure of the hydrogen system 1. In this embodiment, the hydrogen gas generated by the hydrogen system 1 is high-pressure hydrogen gas, and the pressure is generally 30MPa or more, for example, the pressure of the hydrogen gas generated by the hydrogen system 1 is 35MPa; the high-pressure hydrogen gas is passed through a pressure reducing valve 2 to reduce the pressure of the hydrogen gas to 5MPa or less, preferably 2MPa.
The feeding pipe of the hydrogen sampling tank 6 is also provided with an air inlet one-way valve 3, and the hydrogen sampling tank 6 is provided with a pressure gauge; the whole vehicle control unit 10 is electrically connected with the pressure gauge and the air inlet check valve 3, and is used for receiving signals of the pressure gauge and controlling opening and closing of the air inlet check valve 3. In this embodiment, the hydrogen gas passing through the pressure reducing valve 2 enters the hydrogen gas sampling tank 6 through the air inlet check valve 3, and the content of the hydrogen gas in the hydrogen gas sampling tank 6 can be controlled by selectively opening or closing the air inlet check valve 3, so that the purpose of diluting the hydrogen gas from the hydrogen system 1 can be achieved, and the specific control method is as follows: when the whole vehicle control unit 10 detects that the pressure of the hydrogen sampling tank 6 reaches the upper pressure limit, the air inlet one-way valve 3 is controlled to be closed, and when the pressure of the hydrogen sampling tank 6 is normal pressure, the air inlet one-way valve 3 is controlled to be opened.
Wherein the intake check valve 3 is provided on a line between the hydrogen sampling tank 6 and the pressure reducing valve 2.
The hydrogen sampling unit further comprises an air outlet one-way valve 7, and the air outlet one-way valve 7 is arranged on a discharging pipeline of the hydrogen sampling tank 6; the outlet of the discharging pipeline of the hydrogen sampling tank 6 is communicated with the atmosphere; the whole vehicle control unit 10 is electrically connected with the air outlet one-way valve 7 and is used for controlling the opening and closing of the air outlet one-way valve 7. In this embodiment, the whole vehicle control unit 10 controls the outlet check valve 7 on the discharging pipeline of the hydrogen sampling tank 6 to be opened once at intervals, so as to empty the detected hydrogen in the hydrogen sampling tank 6, and when the pressure of the hydrogen sampling tank 6 reaches normal pressure, the outlet check valve 7 is closed and the inlet check valve 3 is opened; the purpose of real-time monitoring can be realized, wherein the time of the opening interval can be the same as the sum of the detection time and the deflation time, or can be longer than the time.
The infrared light source 4 used in the utility model is selected from one of yttrium aluminum garnet laser and neodymium glass solid state laser, and the radiation wavelength of the infrared light source 4 is 400-4000 cm -1 . In this embodiment, by selecting the infrared light source 4 having a wavelength of an appropriate amplitude, impurities in hydrogen gas can be detected well, for example, CH can be detected 4 、CO 2 、CO、HCHO、HCOOH、NH 3 And permanent gases such as halides.
Wherein KBr window sheets are arranged at the inlet of the optical path and the outlet of the optical path of the hydrogen sampling tank 6; in this embodiment, by providing an appropriate hydrogen sampling tank 6, the accuracy of infrared detection can be improved.
Wherein the infrared spectrum analysis unit further comprises an interferometer 5, and the interferometer 5 is arranged on a light path between the infrared light source 4 and the hydrogen sampling tank 6; in this embodiment, the resolution of the infrared spectrum analysis unit can be further improved by providing the interferometer 5.
In one embodiment, as shown in FIG. 1, a method of monitoring a hydrogen system of a fuel cell vehicle includes:
reducing the pressure of hydrogen in the hydrogen system 1 from 35MPa to 2MPa through the pressure reducing valve 2, and entering the hydrogen sampling tank 6 through the air inlet one-way valve 3 until the pressure of the hydrogen sampling tank 6 reaches the upper pressure limit, and closing the air inlet one-way valve 3; the infrared light emitted by the infrared light source 4 irradiates the hydrogen sampling tank 6 through the interferometer 5, irradiates the detector 8 through KBr window sheets on the hydrogen sampling tank 6, and is accepted by the detector 8 to form a real-time infrared spectrogram of hydrogen; the real-time infrared spectrogram is compared with the infrared spectrogram of the standard hydrogen through the spectrum contrast analyzer 9, the concentration of the hydrogen is judged, and when an alarm device of the whole vehicle control unit 10 receives a signal that the concentration of the hydrogen judged by the spectrum contrast analyzer 9 is lower than the healthy concentration, an alarm signal is sent out; after finishing a detection process, the whole vehicle control unit 10 opens the air outlet one-way valve 7 until the pressure of the hydrogen sampling tank 6 is reduced to room temperature, closes the air outlet one-way valve 7 and opens the air inlet one-way valve 3; and after the pressure of the hydrogen sampling tank 6 rises to the upper pressure limit, the air inlet one-way valve 3 is closed to introduce new hydrogen for rolling update detection.
A second aspect of the utility model provides a fuel cell vehicle comprising the system of the first aspect of the utility model.
The utility model is further illustrated by the following examples, which are not intended to be limiting in any way.
Examples
A system for monitoring a hydrogen system of a fuel cell vehicle is shown in fig. 1;
reducing the pressure of hydrogen in the hydrogen system 1 from 35MPa to 2MPa through the pressure reducing valve 2, and entering the hydrogen sampling tank 6 through the air inlet one-way valve 3 until the pressure of the hydrogen sampling tank 6 reaches the upper pressure limit, and closing the air inlet one-way valve 3; the infrared light emitted by the infrared light source 4 irradiates the hydrogen sampling tank 6 through the interferometer 5, irradiates the detector 8 through KBr window sheets on the hydrogen sampling tank 6, and is accepted by the detector 8 to form a real-time infrared spectrogram of hydrogen; the real-time infrared spectrogram is compared with the infrared spectrogram of the standard hydrogen through the spectrum contrast analyzer 9, the concentration of the hydrogen is judged, and when an alarm device of the whole vehicle control unit 10 receives a signal that the concentration of the hydrogen judged by the spectrum contrast analyzer 9 is lower than 99.9 vol%, an alarm signal is sent out; after finishing a detection process, the whole vehicle control unit 10 opens the air outlet one-way valve 7 until the pressure of the hydrogen sampling tank 6 is reduced to room temperature, closes the air outlet one-way valve 7 and opens the air inlet one-way valve 3; and after the pressure of the hydrogen sampling tank 6 rises to the upper pressure limit, the air inlet one-way valve 3 is closed to introduce new hydrogen for rolling update detection.
The system and the control method can realize the real-time monitoring of the hydrogen, and are beneficial to prolonging the service life of the fuel cell.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model. In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims (10)

1. A system for monitoring a hydrogen system of a fuel cell vehicle, the system comprising:
the hydrogen sampling unit is used for diluting the hydrogen of the hydrogen system (1);
the infrared spectrum analysis unit is used for monitoring the hydrogen diluted by the hydrogen sampling unit;
the whole vehicle control unit (10) is used for receiving the concentration signal of the hydrogen and sending out an early warning signal when the concentration of the hydrogen is lower than the healthy concentration;
the hydrogen sampling unit comprises a hydrogen sampling tank (6); the inlet of the feeding pipeline of the hydrogen sampling tank (6) is used for being communicated with a hydrogen system (1) of the fuel automobile;
the infrared spectrum analysis unit comprises an infrared light source (4), a detector (8) and a spectrum contrast analyzer (9); the hydrogen sampling tank (6) is arranged on an optical path formed by the infrared light source (4) and the detector (8), and the optical path penetrates through the hydrogen sampling tank (6);
the spectrum contrast analyzer (9) is electrically connected with the detector (8) and the whole vehicle control unit (10); the spectrum contrast analyzer (9) receives signals of the detector (8) and is used for judging the concentration of the hydrogen and sending a concentration signal of the hydrogen to the whole vehicle control unit (10).
2. System according to claim 1, characterized in that a pressure reducing valve (2) is provided in the feed line of the hydrogen sampling tank (6) for reducing the pressure of the hydrogen system (1).
3. The system according to claim 2, characterized in that the feed line of the hydrogen sampling tank (6) is further provided with an air inlet one-way valve (3), and the hydrogen sampling tank (6) is provided with a pressure gauge;
the whole vehicle control unit (10) is electrically connected with the pressure gauge and the air inlet one-way valve (3) and is used for receiving signals of the pressure gauge and controlling the opening and closing of the air inlet one-way valve (3).
4. A system according to claim 3, characterized in that the inlet non-return valve (3) is arranged in the line between the hydrogen sampling tank (6) and the pressure reducing valve (2).
5. The system according to claim 1, characterized in that the hydrogen sampling unit further comprises an outlet one-way valve (7), the outlet one-way valve (7) being arranged on the discharge line of the hydrogen sampling tank (6); the outlet of the discharging pipeline of the hydrogen sampling tank (6) is communicated with the atmosphere;
the whole vehicle control unit (10) is electrically connected with the air outlet one-way valve (7) and used for controlling the opening and closing of the air outlet one-way valve (7).
6. The system according to claim 1, characterized in that the hydrogen sampling tank (6) is provided with KBr-windows at the entrance of the light path and at the exit of the light path.
7. The system according to claim 1, characterized in that the infrared spectrum analysis unit further comprises an interferometer (5), the interferometer (5) being arranged in the light path between the infrared light source (4) and the hydrogen sampling tank (6).
8. The system according to claim 1, characterized in that the infrared light source (4) is selected from one of a yttrium aluminum garnet laser and a neodymium glass solid state laser.
9. The system according to claim 1, characterized in that the vehicle control unit (10) comprises an alarm device; the alarm device is used for receiving the signal that the hydrogen concentration judged by the spectrum contrast analyzer (9) is lower than the healthy concentration and sending out an alarm signal.
10. A fuel cell vehicle, characterized in that it comprises a system according to any one of claims 1 to 9.
CN202223373050.3U 2022-12-13 2022-12-13 System for monitoring hydrogen system of fuel cell automobile and fuel cell automobile Active CN219675828U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223373050.3U CN219675828U (en) 2022-12-13 2022-12-13 System for monitoring hydrogen system of fuel cell automobile and fuel cell automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223373050.3U CN219675828U (en) 2022-12-13 2022-12-13 System for monitoring hydrogen system of fuel cell automobile and fuel cell automobile

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CN219675828U true CN219675828U (en) 2023-09-12

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