CN215731813U - Engine water discharge hydrogen monitoring device of vehicle-mounted fuel cell - Google Patents

Engine water discharge hydrogen monitoring device of vehicle-mounted fuel cell Download PDF

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Publication number
CN215731813U
CN215731813U CN202121954101.4U CN202121954101U CN215731813U CN 215731813 U CN215731813 U CN 215731813U CN 202121954101 U CN202121954101 U CN 202121954101U CN 215731813 U CN215731813 U CN 215731813U
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hydrogen
valve
hydrogen discharge
fuel cell
discharge valve
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刘东阳
张潇丹
苗佩宇
姜海林
李飞强
张国强
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Beijing Sinohytec Co Ltd
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Beijing Sinohytec Co Ltd
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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
    • 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 a monitoring device for hydrogen discharge of an engine of a vehicle-mounted fuel cell, belongs to the technical field of fuel cell engines, and solves the problem that the running states of a water discharge valve and a hydrogen discharge valve cannot be detected in real time in the prior art. The device comprises a hydrogen spraying device, a water separator, a drain valve, a hydrogen discharge valve and state monitoring equipment; the hydrogen spraying gas port of the hydrogen spraying device is connected with the gas inlet of the fuel cell stack, the tail gas port of the fuel cell stack is respectively connected with the input ends of the drain valve and the hydrogen discharge valve through the water separator, and the output ends of the drain valve and the hydrogen discharge valve are connected with the mixed discharge pipeline; the state monitoring equipment comprises pressure sensors which are respectively arranged on the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve. The running states of the drain valve and the hydrogen discharge valve are monitored in real time.

Description

Engine water discharge hydrogen monitoring device of vehicle-mounted fuel cell
Technical Field
The utility model relates to the technical field of fuel cell engines, in particular to a monitoring device for hydrogen discharge of an engine of a vehicle-mounted fuel cell.
Background
A fuel cell power generation system is a device that converts chemical energy generated by a chemical reaction into electrical energy. The energy conversion rate is 40% -60%, the fuel cell is very efficient, has the characteristics of no pollution, environmental friendliness and the like, and hardly generates polluted gases such as nitrogen oxides, carbon monoxide and the like in the conversion process, so that the fuel cell is regarded as an energy power device with a good development prospect.
In the use process of the fuel cell power generation device, water in a hydrogen loop needs to be separated through a water separator and discharged through a water discharge valve, the calibration of a water discharge valve and a hydrogen discharge valve of the existing fuel cell engine is the calibration in a laboratory environment, the water discharge valve and the hydrogen discharge valve are more complex in the whole vehicle environment due to environmental factors, the external pressure change can affect the water discharge time of the water discharge valve, and the overlong opening time of the water discharge valve and the hydrogen discharge valve can lead to the water discharge valve to discharge air, thereby seriously affecting the performance of the engine.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide a monitoring device for hydrogen discharge and exhaust of an engine of a vehicle-mounted fuel cell, which is used for solving the problem that the running states of a water discharge valve and a hydrogen discharge valve cannot be detected in real time in the prior art.
The purpose of the utility model is mainly realized by the following technical scheme:
a monitoring device for hydrogen discharge of an engine of a vehicle-mounted fuel cell comprises a hydrogen spraying device, a water separator, a water discharge valve, a hydrogen discharge valve and state monitoring equipment; wherein the content of the first and second substances,
a hydrogen spraying gas port of the hydrogen spraying device is connected with a gas inlet of the fuel cell stack, a tail gas port of the fuel cell stack is respectively connected with input ends of the drain valve and the hydrogen discharge valve through the water separator, and output ends of the drain valve and the hydrogen discharge valve are connected with a mixed discharge pipeline;
the state monitoring equipment comprises pressure sensors which are respectively arranged on the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve.
The beneficial effects of the above scheme are as follows: the running states of the drain valve and the hydrogen discharge valve can be monitored in real time through the state monitoring equipment, and the drain valve and the hydrogen discharge valve can be timely responded before the rupture or exhaust condition occurs, so that the galvanic pile is prevented from being influenced greatly, and the performance of the engine is prevented from being further attenuated.
Based on the further improvement of the device, the state monitoring equipment comprises data acquisition equipment, a controller and an actuating mechanism which are connected in sequence; and the number of the first and second electrodes,
in addition to the pressure sensor, the data acquisition device further comprises a gas pressure sensor, a current sensor and a hydrogen spraying duty ratio sensor.
Furthermore, more than one gas pressure sensor is respectively arranged at a hydrogen spraying gas inlet or a hydrogen spraying gas outlet of the hydrogen spraying device;
the current sensor is arranged at the power supply output end of the fuel cell stack and is connected with an electric load in series;
the hydrogen spraying duty ratio sensor is arranged at the tail part of the hydrogen spraying device.
Further, the controller further comprises a data receiving and transmitting unit, a data analyzing unit and a control unit which are connected in sequence; and the number of the first and second electrodes,
the data analysis unit is provided with a display module, and the display screen of the display module displays the pressure of the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve at the current moment, the hydrogen spraying duty ratio and the output current of the fuel cell.
Further, the engine exhaust hydrogen discharge monitoring device also comprises a hydrogen discharge valve leakage detection device;
all sensors of the leakage detection equipment of the hydrogen discharge valve are uniformly distributed on the inner wall of the hydrogen discharge valve and the inner walls of the front connecting pipeline and the rear connecting pipeline.
Further, the leakage detection equipment for the hydrogen discharge valve further comprises a first distributed pressure sensor, a first control unit and a first output unit which are sequentially connected;
and the output end of the first output unit is connected with the input end of the state monitoring equipment.
Further, the engine exhaust hydrogen discharge monitoring device also comprises a drain valve leakage detection device;
all sensors of the drain valve leakage detection equipment are uniformly distributed on the inner wall of the drain valve and the inner wall of the front connecting pipeline and the rear connecting pipeline.
Further, drain valve leakage detection equipment further includes that connecting gradually: a second distributed pressure sensor, a second control unit and a second output unit;
and the output end of the second output unit is connected with the input end of the state monitoring equipment.
Further, the actuating mechanism comprises a first electromagnetic valve and a second electromagnetic valve which are arranged at the front ends of the drain valve and the hydrogen discharge valve;
the input end of the electromagnetic valve I is connected with the drainage output end of the water separator, and the output end of the electromagnetic valve I is connected with the input end of the drainage valve;
the input end of the second electromagnetic valve is connected with the air output end of the water separator, and the output end of the second electromagnetic valve is connected with the input end of the hydrogen discharge valve.
Furthermore, the actuating mechanism also comprises a third electromagnetic valve and a fourth electromagnetic valve which are arranged at the rear ends of the drain valve and the hydrogen discharge valve;
the input end of the electromagnetic valve III is connected with the output end of the drain valve, and the output end of the electromagnetic valve III is connected with the mixed drainage pipeline;
and the input end of the electromagnetic valve IV is connected with the output end of the hydrogen discharge valve, and the output end of the electromagnetic valve IV is connected with the mixed discharge pipeline.
The beneficial effects of the above further improved scheme are: the leakage detection equipment of the hydrogen discharge valve and the leakage detection equipment of the drain valve are added, so that the risk of leakage of the hydrogen discharge valve and the drain valve is eliminated before the detection of the hydrogen discharge state of the hydrogen discharge is carried out. And the state monitoring equipment is further limited, and the current states (normal or abnormal) of the drain valve and the hydrogen discharge valve can be measured in real time through the equipment, so that a foundation is laid for accurately predicting the exhaust of the drain valve.
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 is a schematic diagram showing a configuration of a hydrogen discharge monitoring device of an engine according to embodiment 1;
FIG. 2 is a schematic diagram showing a configuration of a hydrogen discharge monitoring device of an engine according to embodiment 2;
fig. 3 shows a schematic diagram of the principle of hydrogen discharge monitoring of an engine in embodiment 2.
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
One embodiment of the present invention discloses a device for monitoring hydrogen discharge from an engine of a vehicle-mounted fuel cell, as shown in fig. 1, comprising a hydrogen injection device, a water separator, a water discharge valve, a hydrogen discharge valve, and a state monitoring device.
The hydrogen spraying gas port of the hydrogen spraying device is connected with the gas inlet of the fuel cell stack, the tail gas port of the fuel cell stack is respectively connected with the input ends of the drain valve and the hydrogen discharge valve through the water separator, and the output ends of the drain valve and the hydrogen discharge valve are connected with the mixed discharge pipeline. The output end of the mixing and discharging pipeline is connected with the mixing and discharging device.
The state monitoring equipment comprises pressure sensors which are respectively arranged on the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve.
During implementation, on-vehicle fuel cell can look over the pressure on hydrogen injection apparatus afterbody, drain valve, hydrogen discharge valve surface through state supervisory equipment when the power supply for the user can clearly know the real-time status of drain valve, hydrogen discharge valve, for example whether operate (if pressure is 0, be in the not operating condition, otherwise, be in the operating condition), and corresponding operating condition (pressure is higher than the threshold value upper limit, probably leads to the drain valve, the hydrogen discharge valve to appear breaking or exhausting, should in time change corresponding drain valve, hydrogen discharge valve) etc..
Compared with the prior art, the device that this embodiment provided can in time monitor the running state of drain valve, hydrogen discharge valve through state monitoring equipment, in time deal with before the rupture or the exhaust condition appear in drain valve, hydrogen discharge valve, avoid causing bigger influence to the pile, avoid appearing the further decay of engine performance.
Example 2
The optimization is carried out on the basis of the embodiment 1, and the state monitoring equipment comprises data acquisition equipment, a controller and an execution mechanism which are sequentially connected.
Preferably, the data acquisition equipment comprises pressure sensors (as shown in fig. 3) arranged at the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve, and a gas pressure sensor, a current sensor and a hydrogen spraying duty ratio sensor.
Preferably, more than one gas pressure sensor is disposed at the hydrogen injection gas inlet or the hydrogen injection gas outlet of the hydrogen injection device, respectively.
Preferably, the current sensor is arranged at the power supply output end of the fuel cell stack and is connected with the electric load in series.
Preferably, the hydrogen spraying duty ratio sensor is arranged at the tail part of the hydrogen spraying device. The hydrogen spray duty cycle, i.e., the duty cycle of the PWM signal. For example, a hydrogen injection duty cycle sensor can be found in patent CN 202010964398.6. Alternatively, the hydrogen injection duty cycle sensor may be replaced with other devices that measure the hydrogen injection duty cycle.
Preferably, the engine exhaust hydrogen discharge monitoring apparatus further includes a hydrogen discharge valve leak detection device and a drain valve leak detection device, as shown in fig. 2. All sensors of the leakage detection equipment of the hydrogen discharge valve are uniformly distributed on the inner wall of the hydrogen discharge valve and the inner walls of the front connecting pipeline and the rear connecting pipeline. All sensors of the drain valve leakage detection equipment are uniformly distributed on the inner wall of the drain valve and the inner wall of the front connecting pipeline and the rear connecting pipeline.
Preferably, the hydrogen discharge valve leakage detection apparatus further comprises a first distributed pressure sensor, a first control unit and a first output unit which are connected in sequence. And the output end of the first output unit is connected with the input end of the state monitoring equipment. The control unit I is used for judging whether the leakage phenomenon occurs on the hydrogen exhaust valve and the connecting pipeline thereof according to the pressure of each position on the inner wall of the hydrogen exhaust valve and the inner walls of the front connecting pipeline and the rear connecting pipeline, which is measured by the received distributed pressure sensor I, and sending the result of the leakage phenomenon to the state monitoring equipment through the output unit I. In particular, if the pressure at any one location is significantly higher than the pressure at other locations around, a leakage phenomenon occurs at that point.
Preferably, the drain valve leakage detecting apparatus further comprises: a second distributed pressure sensor, a second control unit and a second output unit. And the output end of the second output unit is connected with the input end of the state monitoring equipment. And the control unit is used for judging whether the drain valve and the connecting pipeline thereof have leakage phenomena according to the pressure of each position on the inner wall of the drain valve and the inner walls of the front and rear connecting pipelines, which is measured by the received distributed pressure sensor II, and sending the result of whether the leakage phenomena occur to the state monitoring equipment through the output unit I. In particular, if the pressure at any one location is significantly higher than the pressure at other locations around, a leakage phenomenon occurs at that point.
Preferably, the controller further comprises a data transceiving unit, a data analysis unit and a control unit which are connected in sequence.
And the data receiving and sending unit is used for receiving the output of the state monitoring equipment, the drain valve leakage detection equipment and the hydrogen discharge valve leakage detection equipment and transmitting the output to the data analysis unit and external equipment.
A data analysis unit for receiving the results of no leakage of the drain valve and no leakage of the hydrogen discharge valve, and then according to the current surface pressure of the drain valve and the hydrogen discharge valve, the hydrogen spray duty ratio and the hydrogen spray inlet pressure sent by the state monitoring equipmentP 0Pressure of hydrogen discharge portP 1Output current of the electric pileIAnd obtaining the real-time states (normal or abnormal) of the drain valve and the hydrogen discharge valve and sending the real-time states to the control unit. In an exemplary manner, the first and second electrodes are,P 0≠0、P 1≠0、Inot equal to 0, indicating that the hydrogen exhaust valve is opened, otherwise, not opening the hydrogen exhaust valve;P 0、P 1if at least one of the hydrogen discharge valves exceeds the upper limit threshold, the state of the hydrogen discharge valve is abnormal, otherwise, the state of the hydrogen discharge valve is normal. And under the condition that the hydrogen discharge valve is opened and is in a normal state, if the hydrogen spraying duty ratio is less than or equal to the upper limit threshold value, the state of the water discharge valve is normal, otherwise, the state of the water discharge valve is abnormal.
The control unit is used for finishing the monitoring process at the next moment of the current moment after receiving the normal result of the drain valve; or, after receiving the result of the abnormality (drain) of the drain valve, the actuator is controlled to close the corresponding hydrogen discharge valve or drain valve at the next time from the present time.
Preferably, the data analysis unit is provided with a display module, and the display screen of the display module displays the pressure of the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve at the current moment, the hydrogen spraying duty ratio and the output current of the fuel cell.
Preferably, the actuating mechanism comprises a first electromagnetic valve and a second electromagnetic valve which are arranged at the front ends of the drain valve and the hydrogen discharge valve, and a third electromagnetic valve and a fourth electromagnetic valve which are arranged at the rear ends of the drain valve and the hydrogen discharge valve.
The input end of the first electromagnetic valve is connected with the drainage output end of the water distributor, and the output end of the first electromagnetic valve is connected with the input end of the drainage valve.
The input end of the second electromagnetic valve is connected with the air output end of the water separator, and the output end of the second electromagnetic valve is connected with the input end of the hydrogen discharge valve.
The input end of the electromagnetic valve III is connected with the output end of the drain valve, and the output end of the electromagnetic valve III is connected with the mixed drainage pipeline.
The input end of the electromagnetic valve IV is connected with the output end of the hydrogen discharge valve, and the output end of the electromagnetic valve IV is connected with the mixed discharge pipeline.
Compared with the embodiment 1, the engine hydrogen discharge and discharge device provided by the embodiment is additionally provided with the leakage detection equipment of the hydrogen discharge valve and the leakage detection equipment of the water discharge valve, so that the risk of leakage of the hydrogen discharge valve and the water discharge valve is eliminated before the detection of the hydrogen discharge and discharge state is carried out. And the state monitoring equipment is further limited, and the current states (normal or abnormal) of the drain valve and the hydrogen discharge valve can be measured in real time through the equipment, so that a foundation is laid for accurately predicting the exhaust of the drain valve.
The present invention does not relate to any software improvement. The utility model only needs to connect the devices with corresponding functions through the connection relation given by the embodiment of the utility model, and does not relate to any improvement in program software. 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. A monitoring device for hydrogen discharge of an engine of a vehicle-mounted fuel cell is characterized by comprising a hydrogen spraying device, a water separator, a water discharge valve, a hydrogen discharge valve and state monitoring equipment; wherein the content of the first and second substances,
a hydrogen spraying gas port of the hydrogen spraying device is connected with a gas inlet of the fuel cell stack, a tail gas port of the fuel cell stack is respectively connected with input ends of the drain valve and the hydrogen discharge valve through the water separator, and output ends of the drain valve and the hydrogen discharge valve are connected with a mixed discharge pipeline;
the state monitoring equipment comprises pressure sensors which are respectively arranged on the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve.
2. The engine exhaust hydrogen discharge monitoring device of the vehicle-mounted fuel cell according to claim 1, wherein the state monitoring device comprises a data acquisition device, a controller and an actuator which are connected in sequence; and the number of the first and second electrodes,
in addition to the pressure sensor, the data acquisition device further comprises a gas pressure sensor, a current sensor and a hydrogen spraying duty ratio sensor.
3. The engine-exhaust hydrogen discharge monitoring device of the vehicle-mounted fuel cell according to claim 2, wherein more than one gas pressure sensor is disposed at a hydrogen injection inlet port or a hydrogen injection outlet port of the hydrogen injection device, respectively;
the current sensor is arranged at the power supply output end of the fuel cell stack and is connected with an electric load in series;
the hydrogen spraying duty ratio sensor is arranged at the tail part of the hydrogen spraying device.
4. The engine-exhaust hydrogen discharge monitoring device of the vehicle-mounted fuel cell according to claim 2 or 3, wherein the controller further comprises a data transceiving unit, a data analyzing unit and a control unit which are connected in sequence; and the number of the first and second electrodes,
the data analysis unit is provided with a display module, and the display screen of the display module displays the pressure of the tail part of the hydrogen spraying device, the drain valve and the surface of the hydrogen discharge valve at the current moment, the hydrogen spraying duty ratio and the output current of the fuel cell.
5. The engine-exhaust hydrogen discharge monitoring apparatus of a vehicle-mounted fuel cell according to claim 4, characterized by further comprising a hydrogen discharge valve leak detection device;
all sensors of the leakage detection equipment of the hydrogen discharge valve are uniformly distributed on the inner wall of the hydrogen discharge valve and the inner walls of the front connecting pipeline and the rear connecting pipeline.
6. The engine exhaust hydrogen discharge monitoring device of the vehicle-mounted fuel cell according to claim 5, wherein the hydrogen discharge valve leakage detection apparatus further comprises a first distributed pressure sensor, a first control unit, a first output unit;
and the output end of the first output unit is connected with the input end of the state monitoring equipment.
7. The engine-drain hydrogen discharge monitoring apparatus of the vehicle-mounted fuel cell according to claim 5 or 6, characterized by further comprising a drain valve leak detection device;
all sensors of the drain valve leakage detection equipment are uniformly distributed on the inner wall of the drain valve and the inner wall of the front connecting pipeline and the rear connecting pipeline.
8. The engine-exhaust hydrogen discharge monitoring apparatus of a vehicle-mounted fuel cell according to claim 7, wherein the drain valve leak detection device further comprises, connected in series: a second distributed pressure sensor, a second control unit and a second output unit;
and the output end of the second output unit is connected with the input end of the state monitoring equipment.
9. The engine water discharge hydrogen monitoring device of the vehicle-mounted fuel cell according to any one of claims 2 to 3, 5 to 6 and 8, wherein the actuator comprises a first electromagnetic valve and a second electromagnetic valve which are arranged at the front ends of the water discharge valve and the hydrogen discharge valve;
the input end of the electromagnetic valve I is connected with the drainage output end of the water separator, and the output end of the electromagnetic valve I is connected with the input end of the drainage valve;
the input end of the second electromagnetic valve is connected with the air output end of the water separator, and the output end of the second electromagnetic valve is connected with the input end of the hydrogen discharge valve.
10. The engine exhaust hydrogen discharge monitoring device of the vehicle-mounted fuel cell according to claim 9, wherein the actuator further includes a third electromagnetic valve and a fourth electromagnetic valve which are disposed at rear ends of the exhaust valve and the hydrogen discharge valve;
the input end of the electromagnetic valve III is connected with the output end of the drain valve, and the output end of the electromagnetic valve III is connected with the mixed drainage pipeline;
and the input end of the electromagnetic valve IV is connected with the output end of the hydrogen discharge valve, and the output end of the electromagnetic valve IV is connected with the mixed discharge pipeline.
CN202121954101.4U 2021-08-19 2021-08-19 Engine water discharge hydrogen monitoring device of vehicle-mounted fuel cell Active CN215731813U (en)

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CN202121954101.4U CN215731813U (en) 2021-08-19 2021-08-19 Engine water discharge hydrogen monitoring device of vehicle-mounted fuel cell

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CN202121954101.4U CN215731813U (en) 2021-08-19 2021-08-19 Engine water discharge hydrogen monitoring device of vehicle-mounted fuel cell

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116706157A (en) * 2022-04-29 2023-09-05 宇通客车股份有限公司 Fuel cell vehicle and hydrogen discharge valve/drain valve fault diagnosis method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116706157A (en) * 2022-04-29 2023-09-05 宇通客车股份有限公司 Fuel cell vehicle and hydrogen discharge valve/drain valve fault diagnosis method and device
CN116706157B (en) * 2022-04-29 2024-05-24 宇通客车股份有限公司 Fuel cell vehicle and hydrogen discharge valve/drain valve fault diagnosis method and device

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