CN115626060A - Monitoring method and device for hydrogen cylinder of fuel cell automobile - Google Patents

Monitoring method and device for hydrogen cylinder of fuel cell automobile Download PDF

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Publication number
CN115626060A
CN115626060A CN202211320221.8A CN202211320221A CN115626060A CN 115626060 A CN115626060 A CN 115626060A CN 202211320221 A CN202211320221 A CN 202211320221A CN 115626060 A CN115626060 A CN 115626060A
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China
Prior art keywords
fuel cell
hydrogen
cylinder
cylinder valve
bottle
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CN202211320221.8A
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Chinese (zh)
Inventor
蒋委
谢奇光
周家旺
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Dongfeng Motor Corp
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Dongfeng Motor Corp
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Priority to CN202211320221.8A priority Critical patent/CN115626060A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0053—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling 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
    • 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
    • Y02E60/32—Hydrogen storage

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

The invention relates to the technical field of fuel cell automobiles, in particular to a monitoring method of a hydrogen bottle of a fuel cell automobile, which comprises the following steps: after the vehicle is powered on, entering a cylinder valve opening mode according to the obtained opening instructions of the cylinder valves of a plurality of hydrogen cylinders of the vehicle; in the cylinder valve opening mode, after performing pre-detection processing on a plurality of cylinder valves, controlling a fuel cell system of a vehicle to be in an operating state, wherein the pre-detection processing is detection processing on the current of each cylinder valve and the first pipeline pressure of a first pipeline of a monitoring system; in the operation process of the fuel cell system, acquiring the temperature difference of each hydrogen bottle at intervals of a first preset time length; and if the temperature difference of a certain hydrogen bottle is not greater than the temperature difference threshold value, controlling the fuel cell system to be in a stop state, and sending alarm information of a bottle valve with a fault in the plurality of bottle valves. The method effectively monitors the state of the cylinder valve in real time in the whole operation process of the hydrogen fuel cell automobile, and improves the monitoring efficiency of the cylinder valve and the safety of the whole automobile.

Description

Monitoring method and device for hydrogen cylinder of fuel cell automobile
Technical Field
The invention relates to the technical field of fuel cell automobiles, in particular to a monitoring method and a monitoring device for a hydrogen bottle of a fuel cell automobile.
Background
Hydrogen fuel cell vehicles typically have multiple hydrogen bottles arranged to allow the vehicle to meet driving range requirements. Each hydrogen bottle is provided with a bottle valve, and the vehicle controls the on-off of the hydrogen in the hydrogen bottle by controlling the on-off of the bottle valve. Therefore, monitoring the open/close state of the cylinder valve plays an important role in the safety of the vehicle.
The existing scheme for monitoring the state of a hydrogen cylinder valve of a hydrogen fuel cell automobile is to integrate a pressure sensor and a current sensor in the hydrogen cylinder valve and judge the opening state of the cylinder valve according to the current of the cylinder valve and the pressure condition of the hydrogen cylinder. However, the existing monitoring scheme needs to design a pressure sensor mounting interface on the cylinder valve, which causes the design difficulty and cost increase of the cylinder valve, and each hydrogen cylinder needs to be added with a pressure sensor, and the cost of the whole vehicle will also increase. In addition, the existing monitoring scheme only judges the closing state of the cylinder valve through the current of the cylinder valve, and the judging mode is single. Therefore, the existing monitoring scheme causes the problem of low monitoring efficiency of the hydrogen cylinder valve state of the hydrogen fuel cell automobile.
Disclosure of Invention
The embodiment of the application provides a monitoring method and a monitoring device for a hydrogen bottle of a fuel cell vehicle, solves the technical problem of low monitoring efficiency of the hydrogen bottle valve state of the hydrogen cell vehicle in the prior art, realizes real-time and effective monitoring of the bottle valve state in the whole operation process of the hydrogen cell vehicle, improves the monitoring efficiency of the bottle valve, and accordingly improves the technical effect of the whole vehicle safety of the hydrogen cell vehicle.
In a first aspect, an embodiment of the present invention provides a monitoring method for a fuel cell vehicle hydrogen bottle, which is applied to a monitoring system for a fuel cell vehicle hydrogen bottle, and the method includes:
after a vehicle is powered on, entering a cylinder valve opening mode according to acquired opening instructions of cylinder valves of a plurality of hydrogen cylinders of the vehicle;
in the cylinder valve opening mode, after performing pre-detection processing on a plurality of cylinder valves, the fuel cell system of the vehicle is controlled to be in an operating state, wherein the pre-detection processing is detection processing on the current of each cylinder valve and the first pipeline pressure of the first pipeline of the monitoring system;
acquiring the temperature difference of each hydrogen bottle in the plurality of hydrogen bottles at intervals of a first preset time in the operation process of the fuel cell system;
and if the temperature difference of a certain hydrogen bottle in the temperature differences of the plurality of hydrogen bottles is not larger than the temperature difference threshold value, controlling the fuel cell system to be switched from the running state to the stop state, and sending alarm information of a fault bottle valve in the plurality of bottle valves.
Preferably, the pre-detection processing of the plurality of cylinder valves includes:
in the cylinder valve opening mode, acquiring a current value of each cylinder valve;
and if the current value of a certain cylinder valve is not in the current threshold range, controlling the fuel cell system to be in the stop state, and sending alarm information of a cylinder valve with a fault in the plurality of cylinder valves.
Preferably, the pre-detection processing of the plurality of cylinder valves includes:
in the cylinder valve open mode, acquiring the first line pressure;
and if the first pipeline pressure is not in the first pipeline pressure threshold range, controlling the fuel cell system to be in the stop state, and sending alarm information of a fault cylinder valve in the plurality of cylinder valves.
Preferably, after obtaining the temperature difference of each of the plurality of hydrogen bottles, the method further comprises:
and if the temperature difference of each hydrogen bottle is larger than the temperature difference threshold value, continuously monitoring the temperature difference of each hydrogen bottle.
Preferably, in the process of continuously monitoring the temperature difference of each hydrogen bottle, the method further comprises the following steps:
if the closing instructions of the cylinder valves of the hydrogen cylinders are obtained, entering a cylinder valve closing mode;
and in the cylinder valve closing mode, controlling the fuel cell system to be in the stop state, and controlling a second pipeline of the monitoring system to be in a conducting state, wherein the second pipeline is in the conducting state, and the second pipeline is used for controlling the hydrogen cylinders to be communicated with an exhaust pipe of the monitoring system.
Preferably, after controlling the second pipeline of the monitoring system to be in a conducting state, the method further includes:
acquiring a second pipeline pressure of the second pipeline within a second preset time length;
and if the second pipeline pressure is not greater than a second pipeline pressure threshold value, sending prompt information that each cylinder valve is in a closed state.
Preferably, after acquiring the second line pressure of the second line within a second preset time period, the method further includes:
and if the second pipeline pressure is greater than the second pipeline pressure threshold value, sending alarm information of a cylinder valve with a fault in the plurality of cylinder valves.
Based on the same inventive concept, in a second aspect, the invention further provides a monitoring device for a hydrogen bottle of a fuel cell vehicle, which is applied to a monitoring system for a hydrogen bottle of a fuel cell vehicle, and the device comprises:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for entering a cylinder valve opening mode according to acquired opening instructions of cylinder valves of a plurality of hydrogen cylinders of a vehicle after the vehicle is powered on;
the system comprises a cylinder valve opening mode, a pre-detection processing module and a monitoring module, wherein the cylinder valve opening mode is used for controlling a fuel cell system of the vehicle to be in an operating state after pre-detection processing is carried out on a plurality of cylinder valves, and the pre-detection processing is carried out on the current of each cylinder valve and the first pipeline pressure of a first pipeline of the monitoring system;
the temperature difference acquisition module is used for acquiring the temperature difference of each hydrogen bottle in the plurality of hydrogen bottles at intervals of a first preset time length in the operation process of the fuel cell system;
and the control module is used for controlling the fuel cell system to be switched to a stop state from the running state if the temperature difference of a certain hydrogen bottle in the temperature difference of the plurality of hydrogen bottles is not larger than a temperature difference threshold value, and sending alarm information of a fault bottle valve in the plurality of bottle valves.
Based on the same inventive concept, in a third aspect, the invention provides a fuel cell vehicle, comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of the method for monitoring a hydrogen bottle of the fuel cell vehicle when executing the program.
Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the steps of the monitoring method for a hydrogen bottle of a fuel cell vehicle.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
in the embodiment of the invention, after the vehicle is powered on, the cylinder valve opening mode is entered according to the obtained opening instructions of the cylinder valves of the hydrogen cylinders of the vehicle. In the cylinder valve opening mode, a fuel cell system of a vehicle is controlled to be in an operating state after a pre-detection process is performed on a plurality of cylinder valves, wherein the pre-detection process is a detection process performed on a current of each cylinder valve and a first line pressure of a first line of a monitoring system. Here, whether or not a faulty cylinder valve is present among the plurality of cylinder valves is determined by detection processing performed on the current of each cylinder valve and the first line pressure of the first line of the monitoring system, thereby achieving effective monitoring of the cylinder valve state.
In the operation process of the fuel cell system, the temperature difference of each hydrogen bottle in the plurality of hydrogen bottles is obtained at intervals of a first preset time. And if the temperature difference of a certain hydrogen bottle is not greater than the temperature difference threshold value in the temperature difference of the plurality of hydrogen bottles, controlling the fuel cell system to be switched from the running state to the stopping state, and sending alarm information of a bottle valve with a fault in the plurality of bottle valves. Here, through the current value of every cylinder valve, first pipeline pressure and the difference in temperature of every hydrogen bottle in every interval first predetermined duration, synthesize the state of judging every cylinder valve in the cylinder valve mode of opening, the state of every cylinder valve of real-time supervision effectively improves the monitoring efficiency of cylinder valve, promotes fuel cell system and normal security, guarantees the effective operation of whole car.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart illustrating the steps of a method for monitoring a hydrogen bottle of a fuel cell vehicle in an embodiment of the invention;
FIG. 2 is a schematic diagram showing a monitoring system for a hydrogen cylinder of a fuel cell vehicle according to an embodiment of the present invention;
fig. 3 shows a block schematic diagram of a monitoring device for a hydrogen cylinder of a fuel cell vehicle in an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary 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 to 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.
Example one
The first embodiment of the present invention provides a method for monitoring a hydrogen bottle of a fuel cell vehicle, as shown in fig. 1, including:
s101, after a vehicle is powered on, entering a cylinder valve opening mode according to acquired opening instructions of cylinder valves of a plurality of hydrogen cylinders of the vehicle;
s102, in a cylinder valve opening mode, after pre-detection processing is carried out on a plurality of cylinder valves, a fuel cell system of a vehicle is controlled to be in an operation state, wherein the pre-detection processing is detection processing carried out on the current of the cylinder valves and the first pipeline pressure of a first pipeline of a monitoring system;
s103, acquiring the temperature difference of each hydrogen bottle in the plurality of hydrogen bottles at intervals of a first preset time length in the operation process of the fuel cell system;
and S104, if the temperature difference of a certain hydrogen bottle is not larger than the temperature difference threshold value in the temperature differences of the plurality of hydrogen bottles, controlling the fuel cell system to be switched from the running state to the stop state, and sending alarm information of a fault bottle valve in the plurality of bottle valves.
The vehicle of the present embodiment is a hydrogen fuel cell vehicle.
The monitoring method of the fuel cell automobile hydrogen bottle is applied to a monitoring system of the fuel cell automobile hydrogen bottle. As shown in fig. 2, the monitoring system includes: a plurality of hydrogen cylinders 201 of a vehicle, a controller 200, a pressure reducer 203 of the vehicle, a three-way valve 204, a fuel cell system 205, an exhaust pipe 206, a current sensor 207, a pressure sensor 208, and a temperature sensor 209, which are connected to the controller 200. Each hydrogen bottle 201 is connected to an inlet 2041 of a three-way valve 204 through a pressure reducer 203. A first outlet 2042 of the three-way valve 204 is connected to the fuel cell system 205. A second outlet 2043 of the three-way valve 204 is connected to the exhaust pipe 206. Thus, a first line of the monitoring system is formed by each hydrogen cylinder 201, the pressure reducing valve, the inlet 2041 of the three-way valve 204, the first outlet 2042 of the three-way valve 204 and the fuel cell system 205. A second line of the monitoring system is formed by each hydrogen bottle 201, the pressure reducing valve, the inlet 2041 of the three-way valve 204, the second outlet 2043 of the three-way valve 204 and the vent line 206.
Wherein a temperature sensor 209 is provided on each hydrogen bottle 201 for detecting the temperature of each hydrogen bottle 201. A current sensor 207 is provided on the cylinder valve 202 of each hydrogen cylinder 201 for controlling the opening and closing of the cylinder valve 202 and detecting the current of each cylinder valve 202. It should be noted that the number of temperature sensors 209 and the number of current sensors 207 correspond to the number of hydrogen bottles 201. The pressure sensors 208 are arranged on a pipeline between the hydrogen cylinders 201 and the pressure reducing valve and used for measuring the pipeline pressure corresponding to the pipeline, and the number of the pressure sensors 208 is one or more and is set according to actual requirements.
The monitoring system of this embodiment continues to use the spare part of vehicle, need not to increase extra spare part (if extra spare parts such as pressure sensor are arranged in the hydrogen cylinder), realizes carrying out real-time supervision to the cylinder valve 202 state, effectively improves the development degree of difficulty of cylinder valve 202, also reduces whole car cost simultaneously, is favorable to carrying out low-cost high accuracy ground monitoring to the closed state of the cylinder valve 202 of vehicle.
The following describes in detail specific implementation steps of the monitoring method for a hydrogen bottle of a fuel cell vehicle provided in this embodiment with reference to fig. 1-2:
first, step S101 is executed, and after the vehicle is powered on, the vehicle enters a cylinder valve opening mode in accordance with an acquired opening command for the cylinder valves 202 of the plurality of hydrogen cylinders 201 of the vehicle.
Specifically, after the vehicle is powered on, the opening commands of the cylinder valves 202 of the plurality of hydrogen cylinders 201 sent by the vehicle controller of the vehicle need to be acquired. If an opening instruction of the cylinder valves 202 of the plurality of hydrogen cylinders 201 is acquired, a cylinder valve opening mode is entered according to the opening instruction, wherein the cylinder valve opening mode is a mode for monitoring the state of each cylinder valve 202 after the cylinder valves 202 of the plurality of hydrogen cylinders 201 are opened. If an open command for the cylinder valve 202 of the plurality of hydrogen cylinders 201 is not acquired, it continues to wait for the acquisition of the open command.
In the cylinder valve opening mode, step S102 is performed to control the fuel cell system 205 of the vehicle to be in an operating state after performing a pre-detection process on the plurality of cylinder valves 202, wherein the pre-detection process is a detection process on the current of each cylinder valve 202 and the first line pressure of the first line of the monitoring system.
Specifically, in the cylinder valve open mode, the plurality of cylinder valves 202 are subjected to a preliminary detection process. After the plurality of cylinder valves 202 pass the pre-detection process, the fuel cell system 205 is controlled to be in an operating state. The process of pre-sensing the plurality of cylinder valves 202 is sensing the current of each cylinder valve 202 and the first line pressure of the first line of the monitoring system. The order of the current detection process for each cylinder valve 202 and the order of the first management pressure detection process may be performed simultaneously or sequentially, but not limited thereto.
The process of detecting the current of each cylinder valve 202 is to acquire the current value of each cylinder valve 202 in the cylinder valve open mode. If the current value of one of the cylinder valves 202 is not within the current threshold range, indicating that a faulty cylinder valve 202 is present among the plurality of cylinder valves 202, that is, the faulty cylinder valve 202 is in the closed state, the fuel cell system 205 is controlled to be in the stopped state, and an alarm message indicating that a faulty cylinder valve 202 is present among the plurality of cylinder valves 202 is transmitted. Wherein the current threshold range is set according to actual demand, and the stop state is a state in which the operation of the fuel cell system 205 is prohibited. If the current value of each cylinder valve 202 is within the current threshold range, which indicates that each cylinder valve 202 is in the open state, it is determined that each cylinder valve 202 is normal and has no fault, so as to control the fuel cell system 205 to switch from the stop state to the operation state.
In addition, in the case where the number of each current sensor 207 and the number of each cylinder valve 202 correspond one-to-one, during the detection process of the current of each cylinder valve 202, if the current value of a certain cylinder valve 202 is not within the current threshold range, the fuel cell system 205 is controlled to be in a stopped state, and the number of the cylinder valve 202 and the alarm information of the cylinder valve 202 having a failure are transmitted to prompt an operator to detect, repair or replace the cylinder valve 202 or the hydrogen cylinder 201 corresponding to the cylinder valve 202.
The detection processing procedure of the first pipeline pressure of the first pipeline of the monitoring system is to acquire the first pipeline pressure in a cylinder valve opening mode. If the first line pressure is not within the first line pressure threshold range, indicating that a faulty cylinder valve 202 of the plurality of cylinder valves 202 is present, i.e., the faulty cylinder valve 202 is in the closed state, the fuel cell system 205 is controlled to be in the stopped state, and an alarm message is sent indicating that a faulty cylinder valve 202 of the plurality of cylinder valves 202 is present. Wherein the first line pressure threshold range is set according to actual demand. If the first line pressure is within the first managed pressure threshold range, indicating that each cylinder valve 202 is in the open state, it is determined that each cylinder valve 202 is normal and has not failed, so as to control the fuel cell system 205 to switch from the stopped state to the operating state.
After the plurality of cylinder valves 202 are subjected to the preliminary detection process, the fuel cell system 205 of the vehicle is controlled to be in an operating state under the condition that it is determined that the fuel cell system 205 can operate normally.
In this embodiment, after the vehicle is powered on and receives an opening instruction of the plurality of hydrogen cylinders 201 and cylinder valves 202 of the vehicle, the current of each cylinder valve 202 and the first pipeline pressure of the first pipeline of the monitoring system are detected and processed to determine whether a faulty cylinder valve occurs in the plurality of cylinder valves 202, so that the state of the cylinder valve 202 is effectively monitored, the monitoring efficiency of the cylinder valve 202 is improved, abnormal starting of the fuel cell system 205 is avoided, and the safety of the whole vehicle is ensured.
Next, step S103 is executed to acquire the temperature difference of each hydrogen bottle 201 of the plurality of hydrogen bottles 201 at intervals of a first preset time period during the operation of the fuel cell system 205. The first preset time is set according to actual requirements.
Specifically, during the operation of the fuel cell system 205, the temperature of each hydrogen bottle 201 will gradually decrease as the hydrogen gas in each hydrogen bottle 201 is consumed. Taking one cylinder valve 202 as an example, during the normal operation of the fuel cell system 205, at the time point T1, the temperature value A1 of the hydrogen cylinder 201 is acquired. The temperature value A2 of the hydrogen bottle 201 is acquired at a first preset time interval, namely at the time point T2. At this time, the temperature difference of the hydrogen cylinder 201 is A2-A1. The temperature difference acquisition modes of the other hydrogen bottles 201 are the same.
After the temperature difference of each hydrogen cylinder 201 is obtained, step S104 is executed, and if the temperature difference of a certain hydrogen cylinder 201 in the temperature differences of the plurality of hydrogen cylinders 201 is not greater than the temperature difference threshold, the fuel cell system 205 is controlled to switch from the operating state to the stop state, and an alarm message that a faulty cylinder valve exists in the plurality of cylinder valves 202 is sent. Wherein, the temperature difference threshold is set according to actual requirements.
Specifically, after the temperature difference of each hydrogen bottle 201 is obtained, if the temperature difference of each hydrogen bottle 201 is greater than the temperature difference threshold, it indicates that each bottle valve 202 is in an open state, and there is no faulty bottle valve 202, the temperature difference of each hydrogen bottle 201 is continuously monitored. If the temperature difference of a certain hydrogen cylinder 201 is not greater than the temperature difference threshold value, it indicates that the cylinder valve 202 is the failed cylinder valve 202, and the cylinder valve 202 is in the closed state, the fuel cell system 205 is controlled to be switched from the running state to the stop state, and an alarm message indicating that the failed cylinder valve 202 exists in the plurality of cylinder valves 202 is sent, so as to ensure the safety of the fuel cell system 205 and the normal state, and improve the monitoring efficiency of the cylinder valve 202.
In addition, under the condition that the number of each temperature sensor 209 corresponds to the number of each cylinder valve 202 one by one, after the temperature difference of each hydrogen cylinder 201 is obtained, if the temperature difference of a certain hydrogen cylinder 201 is not greater than the temperature difference threshold value, it indicates that the cylinder valve 202 is a failed cylinder valve 202 and the cylinder valve 202 is in a closed state, the fuel cell system 205 is controlled to be switched from an operating state to a stop state, and an alarm message indicating that the failed cylinder valve 202 exists in the plurality of cylinder valves 202 and the number of the cylinder valve 202 are sent to prompt an operator to detect, repair or replace the hydrogen cylinder 201 or the cylinder valve 202 corresponding to the hydrogen cylinder 201.
In this embodiment, the state of each cylinder valve 202 in the cylinder valve opening mode is comprehensively determined by the current value of each cylinder valve 202, the first pipeline pressure and the temperature difference of each hydrogen cylinder 201 at a first preset interval, so that the state of each cylinder valve 202 is effectively monitored in real time, the monitoring efficiency of the cylinder valve 202 is improved, the safety of the fuel cell system 205 and the normal safety are improved, and the effective operation of the whole vehicle is ensured.
In the process of continuously monitoring the temperature difference of each hydrogen cylinder 201, if a closing instruction of the cylinder valves 202 of the plurality of hydrogen cylinders 201 is acquired, the cylinder valve closing mode is entered. The cylinder valve closing mode is a mode in which the state of each cylinder valve 202 is monitored after the cylinder valves 202 of the plurality of hydrogen cylinders 201 are closed.
In the cylinder valve closing mode, the fuel cell system 205 is controlled to be in a stopped state, and the second pipeline of the monitoring system is controlled to be in a conducting state, wherein the second pipeline is in a conducting state to control the plurality of hydrogen cylinders 201 to be communicated with the exhaust pipe 206 of the monitoring system.
After a second pipeline of the control monitoring system is in a conducting state, first obtaining second pipeline pressure of the second pipeline within a second preset time, and then judging the second pipeline pressure. And the second preset time length is set according to the actual requirement. If the second line pressure is not greater than the second line pressure threshold, indicating that each cylinder valve 202 is closed and no faulty cylinder valve 202 exists, sending a prompt message that each cylinder valve 202 is in a closed state, and controlling the first line to be conducted so as to facilitate the next start of the vehicle. If the second line pressure is greater than the second line pressure threshold, indicating that hydrogen still exists in the second line and a faulty cylinder valve 202 exists in the plurality of cylinder valves 202, then an alarm message indicating that a faulty cylinder valve 202 exists in the plurality of cylinder valves 202 is sent.
In the present embodiment, each cylinder valve 202 is controlled to close after receiving a closing command for the cylinder valve 202. The closing state of each cylinder valve 202 is monitored through the second pipeline pressure of the second pipeline, so that the cylinder valves 202 are effectively monitored, the monitoring efficiency is improved, and the safety of vehicles is guaranteed.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
in this embodiment, after the vehicle is powered on, a cylinder valve opening mode is entered according to an obtained opening instruction of cylinder valves of a plurality of hydrogen cylinders of the vehicle. In the cylinder valve opening mode, a fuel cell system of a vehicle is controlled to be in an operating state after a pre-detection process is performed on a plurality of cylinder valves, wherein the pre-detection process is a detection process performed on a current of each cylinder valve and a first line pressure of a first line of a monitoring system. Here, whether a faulty cylinder valve occurs among the plurality of cylinder valves is determined by detection processing performed on the current of each cylinder valve and the first line pressure of the first line of the monitoring system, thereby achieving effective monitoring of the cylinder valve state.
In the operation process of the fuel cell system, the temperature difference of each hydrogen bottle in the plurality of hydrogen bottles is obtained at intervals of a first preset time. And if the temperature difference of a certain hydrogen bottle in the temperature differences of the plurality of hydrogen bottles is not larger than the temperature difference threshold value, controlling the fuel cell system to be switched from the running state to the stop state, and sending alarm information of a fault bottle valve in the plurality of bottle valves. Here, through the current value of every cylinder valve, first pipeline pressure and the difference in temperature of every hydrogen bottle in every interval first predetermined duration, synthesize the state of judging every cylinder valve in the cylinder valve mode of opening, the state of every cylinder valve of real-time supervision effectively improves the monitoring efficiency of cylinder valve, promotes fuel cell system and normal security, guarantees the effective operation of whole car.
Example two
Based on the same inventive concept, a second embodiment of the present invention further provides a monitoring device for a hydrogen bottle of a fuel cell vehicle, as shown in fig. 3, comprising:
the obtaining module 301 is configured to, after a vehicle is powered on, enter a cylinder valve opening mode according to obtained opening instructions of cylinder valves of multiple hydrogen cylinders of the vehicle;
a pre-detection processing module 302, configured to control a fuel cell system of the vehicle to be in an operating state after performing a pre-detection process on a plurality of cylinder valves in the cylinder valve opening mode, where the pre-detection process is a detection process performed on a current of each cylinder valve and a first line pressure of a first line of the monitoring system;
a temperature difference obtaining module 302, configured to obtain a temperature difference of each hydrogen bottle of the multiple hydrogen bottles at intervals of a first preset duration in an operation process of the fuel cell system;
and the control module 304 is configured to control the fuel cell system to switch from the operating state to the stopped state and send alarm information that a fault cylinder valve exists in the plurality of cylinder valves if the temperature difference of a certain hydrogen cylinder in the temperature differences of the plurality of hydrogen cylinders is not greater than a temperature difference threshold.
As an alternative embodiment, the pre-detection processing module 302 is configured to perform the pre-detection processing on the plurality of cylinder valves, and includes:
in the cylinder valve opening mode, acquiring a current value of each cylinder valve;
and if the current value of a certain cylinder valve is not in the current threshold range, controlling the fuel cell system to be in the stop state, and sending alarm information of a cylinder valve with a fault in the plurality of cylinder valves.
As an alternative embodiment, the pre-detection processing module 302 is configured to perform the pre-detection processing on the plurality of cylinder valves, and includes:
in the cylinder valve open mode, acquiring the first line pressure;
and if the first pipeline pressure is not in the first pipeline pressure threshold range, controlling the fuel cell system to be in the stop state, and sending alarm information of a fault cylinder valve in the plurality of cylinder valves.
As an alternative embodiment, the control module 304 is configured to:
and if the temperature difference of each hydrogen bottle is larger than the temperature difference threshold value, continuously monitoring the temperature difference of each hydrogen bottle.
As an alternative embodiment, the control module 304 is configured to: in the process of continuously monitoring the temperature difference of each hydrogen bottle, if closing instructions of the bottle valves of the plurality of hydrogen bottles are obtained, entering a bottle valve closing mode; in the cylinder valve closing mode, the fuel cell system is controlled to be in the stop state, and a second pipeline of the monitoring system is controlled to be in a conducting state, wherein the second pipeline is in the conducting state, and the hydrogen cylinders are all controlled to be communicated with an exhaust pipe of the monitoring system.
As an alternative embodiment, the control module 304 is configured to: after a second pipeline of the monitoring system is controlled to be in a conducting state, acquiring second pipeline pressure of the second pipeline within a second preset time; and if the second pipeline pressure is not greater than a second pipeline pressure threshold value, sending a prompt message that each cylinder valve is in a closed state.
As an alternative embodiment, the control module 304 is configured to:
and if the second pipeline pressure is greater than the second pipeline pressure threshold value, sending alarm information of a fault cylinder valve in the plurality of cylinder valves.
Since the monitoring device for a hydrogen bottle of a fuel cell vehicle described in this embodiment is a device used for implementing the monitoring method for a hydrogen bottle of a fuel cell vehicle in the first embodiment of this application, based on the monitoring method for a hydrogen bottle of a fuel cell vehicle described in the first embodiment of this application, a person skilled in the art can understand a specific implementation manner and various variations of the monitoring device for a hydrogen bottle of a fuel cell vehicle in this embodiment, so that a detailed description of how to implement the method in the first embodiment of this application by the monitoring device for a hydrogen bottle of a fuel cell vehicle is omitted here. The device used by those skilled in the art to implement the method for monitoring the hydrogen cylinder of the fuel cell vehicle in the first embodiment of the present application is within the protection scope of the present application.
EXAMPLE III
Based on the same inventive concept, a third embodiment of the present invention further provides a fuel cell vehicle, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any one of the above-mentioned methods for monitoring a hydrogen bottle of a fuel cell vehicle when executing the program.
Example four
Based on the same inventive concept, a fourth embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of any one of the methods of the monitoring method of a hydrogen bottle of a fuel cell vehicle described in the previous embodiment.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A monitoring method of a hydrogen bottle of a fuel cell vehicle is characterized by being applied to a monitoring system of the hydrogen bottle of the fuel cell vehicle, and the method comprises the following steps:
after a vehicle is powered on, entering a cylinder valve opening mode according to acquired opening instructions of cylinder valves of a plurality of hydrogen cylinders of the vehicle;
in the cylinder valve opening mode, after performing pre-detection processing on a plurality of cylinder valves, the fuel cell system of the vehicle is controlled to be in an operating state, wherein the pre-detection processing is detection processing on the current of each cylinder valve and the first pipeline pressure of the first pipeline of the monitoring system;
acquiring the temperature difference of each hydrogen bottle in the plurality of hydrogen bottles at intervals of a first preset time in the operation process of the fuel cell system;
and if the temperature difference of a certain hydrogen bottle in the temperature differences of the plurality of hydrogen bottles is not larger than the temperature difference threshold value, controlling the fuel cell system to be switched from the running state to the stop state, and sending alarm information of a fault bottle valve in the plurality of bottle valves.
2. The method of claim 1, wherein said pre-testing a plurality of cylinder valves comprises:
in the cylinder valve opening mode, acquiring a current value of each cylinder valve;
and if the current value of a certain cylinder valve is not within the current threshold range, controlling the fuel cell system to be in the stop state, and sending alarm information of the cylinder valve with a fault in the plurality of cylinder valves.
3. The method of claim 2, wherein said pre-testing a plurality of cylinder valves comprises:
in the cylinder valve open mode, acquiring the first line pressure;
and if the first pipeline pressure is not in the first pipeline pressure threshold range, controlling the fuel cell system to be in the stop state, and sending alarm information of a fault cylinder valve in the plurality of cylinder valves.
4. The method of claim 1, further comprising, after obtaining the temperature difference for each of the plurality of hydrogen bottles:
and if the temperature difference of each hydrogen bottle is larger than the temperature difference threshold value, continuously monitoring the temperature difference of each hydrogen bottle.
5. The method of claim 4, further comprising, during the continuing monitoring of the temperature differential for each hydrogen bottle:
if the closing instructions of the cylinder valves of the hydrogen cylinders are obtained, entering a cylinder valve closing mode;
in the cylinder valve closing mode, the fuel cell system is controlled to be in the stop state, and a second pipeline of the monitoring system is controlled to be in a conducting state, wherein the second pipeline is in the conducting state, and the hydrogen cylinders are all controlled to be communicated with an exhaust pipe of the monitoring system.
6. The method of claim 5, after controlling the second conduit of the monitoring system to be in a conductive state, further comprising:
acquiring a second pipeline pressure of the second pipeline within a second preset time length;
and if the second pipeline pressure is not greater than a second pipeline pressure threshold value, sending prompt information that each cylinder valve is in a closed state.
7. The method of claim 6, wherein after acquiring the second line pressure of the second line for a second predetermined length of time, further comprising:
and if the second pipeline pressure is greater than the second pipeline pressure threshold value, sending alarm information of a fault cylinder valve in the plurality of cylinder valves.
8. A monitoring device for a hydrogen bottle of a fuel cell vehicle is applied to a monitoring system for the hydrogen bottle of the fuel cell vehicle, and the device comprises:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for entering a cylinder valve opening mode according to acquired opening instructions of cylinder valves of a plurality of hydrogen cylinders of a vehicle after the vehicle is powered on;
the system comprises a cylinder valve opening mode, a pre-detection processing module and a monitoring module, wherein the cylinder valve opening mode is used for controlling a fuel cell system of the vehicle to be in an operating state after pre-detection processing is carried out on a plurality of cylinder valves, and the pre-detection processing is carried out on the current of each cylinder valve and the first pipeline pressure of a first pipeline of the monitoring system;
the temperature difference acquisition module is used for acquiring the temperature difference of each hydrogen bottle in the plurality of hydrogen bottles at intervals of a first preset time length in the operation process of the fuel cell system;
and the control module is used for controlling the fuel cell system to be switched to a stop state from the running state if the temperature difference of a certain hydrogen bottle in the temperature difference of the plurality of hydrogen bottles is not larger than a temperature difference threshold value, and sending alarm information of a fault bottle valve in the plurality of bottle valves.
9. A fuel cell vehicle comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor executes the program to carry out the method steps according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method steps of any one of claims 1 to 7.
CN202211320221.8A 2022-10-26 2022-10-26 Monitoring method and device for hydrogen cylinder of fuel cell automobile Pending CN115626060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211320221.8A CN115626060A (en) 2022-10-26 2022-10-26 Monitoring method and device for hydrogen cylinder of fuel cell automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211320221.8A CN115626060A (en) 2022-10-26 2022-10-26 Monitoring method and device for hydrogen cylinder of fuel cell automobile

Publications (1)

Publication Number Publication Date
CN115626060A true CN115626060A (en) 2023-01-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN115626060A (en)

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