Fuel cell vehicle starting method and system

Abstract

The present invention provides a method and system for starting a fuel cell vehicle, including: initially powering on the fuel cell vehicle and opening the solenoid valve; initially opening the bottle mouth assembly valve and then closing it at a set time; judging whether the temperature of the hydrogen in the hydrogen storage bottle and the hydrogen concentration outside the on-board hydrogen system are within a set safety range, if "yes", opening the bottle mouth assembly valve; judging whether the pressure of the hydrogen in the hydrogen supply pipeline is within a safe setting range, if "yes", fully powering on the fuel cell vehicle, starting the power battery to work and the fuel cell to have the conditions for starting. The method and system of the present invention can improve the life and performance of fuel cells, and is conducive to the rapid promotion of the industrialization of new energy vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell vehicles, and more specifically, to a starting method and system for a fuel cell vehicle. Background Art

[0002] At present, hydrogen fuel cell vehicle technology is becoming increasingly mature. As a zero-pollution, zero-emission new energy vehicle, hydrogen fuel cell vehicles have increasingly entered the transportation system and have been widely recognized by the public. Fuel cell vehicles use hydrogen as fuel and efficiently convert chemical energy into electrical energy through fuel engines to drive the vehicle. The entire process only discharges pure water, so it is the most ideal energy-saving, environmentally friendly, zero-emission vehicle to replace traditional fossil fuel vehicles in the near future.

[0003] In fuel cell vehicles, the on-board hydrogen system serves as a hydrogen supply device for the fuel cell engine and is a storage and supply device for the energy carrier hydrogen.

[0004] In the process of abnormal shutdown or abnormal shutdown and restart of existing fuel cell engines, the on-board hydrogen system is prone to hydrogen supply pressure drift, which often causes inhomogeneity in hydrogen supply and easily damages the performance of the system. Therefore, it is necessary to control the start and stop of the on-board hydrogen system to provide a homogeneous hydrogen supply for the fuel cell engine and ensure the stability of the system performance. In addition, due to the special properties of hydrogen such as flammability, explosiveness and strong permeability, it is imperative to provide a reasonable starting method as a hydrogen safety management for fuel cell vehicles.

[0005] In summary, there is a need to provide a method and system for starting a fuel cell vehicle that can overcome the defects of the prior art. Summary of the invention

[0006] The present invention aims to provide a method and system for starting a fuel cell vehicle, which can overcome the defects of the prior art. The purpose of the present invention is achieved through the following technical solutions.

[0007] One embodiment of the present invention provides a method for starting a fuel cell vehicle, the method comprising a plurality of steps:

[0008] Step 1: initially power on the fuel cell vehicle and open the solenoid valve;

[0009] Step 2: Initially open the bottle mouth assembly valve and then close it at a set time;

[0010] Step 3: Determine whether the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the vehicle hydrogen system are within the set safety range. If "yes", go to step 4;

[0011] Step 4: Open the bottle mouth assembly valve;

[0012] Step 5: Determine whether the pressure of hydrogen in the hydrogen supply pipeline is within the safety setting range. If yes, proceed to step 6; and

[0013] Step 6: The fuel cell vehicle is fully powered on, the power battery starts working and the fuel cell is ready to start.

[0014] According to the method for starting a fuel cell vehicle provided by one embodiment of the present invention, it is determined whether the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the onboard hydrogen system are within a set safety range. If "no", the following steps are performed;

[0015] Step 7: Close the solenoid valve; and

[0016] Step 9: Feedback is sent to the vehicle controller to cut off the power supply of the fuel cell vehicle.

[0017] According to the method for starting a fuel cell vehicle provided by one embodiment of the present invention, it is determined whether the pressure of hydrogen in the hydrogen supply pipeline is within a safe setting range. If "no", the following steps are performed:

[0018] Step 8: Close the solenoid valve and bottle assembly valve, then proceed to Step 9.

[0019] One embodiment of the present invention provides a starting system for a fuel cell vehicle, wherein the starting system includes a hydrogen supply component, a hydrogen storage component, a hydrogen injection component, a fuel cell engine and a controller, the hydrogen storage component includes multiple hydrogen storage cylinders and multiple bottle mouth component valves, each bottle mouth component valve is provided with a detector and a pressure transmitter, the hydrogen supply component includes a solenoid valve, a safety valve and a manual valve, the safety valve is provided with a pressure transmitter, the hydrogen injection component is connected to the solenoid valve of the hydrogen supply component and the multiple bottle mouth component valves of the hydrogen storage component through pipelines, each bottle mouth component valve is connected to a hydrogen storage cylinder, the solenoid valve is connected to the safety valve through a pipeline, and the solenoid valve is also connected to the manual valve and the fuel cell engine through a three-way pipeline, and the controller is respectively connected to the solenoid valve, the bottle mouth component valve, the detector and pressure transmitter of the bottle mouth component valve, the pressure transmitter on the safety valve and the fuel cell engine.

[0020] According to the starting system for a fuel cell vehicle provided by one of the above embodiments of the present invention, when the starting system of the fuel cell vehicle is started: the controller initially powers on the fuel cell vehicle and opens the solenoid valve; the controller initially opens the bottle mouth assembly valve and then closes the assembly valve at a set time; when the controller determines that the temperature of the hydrogen in the hydrogen storage bottle and the hydrogen concentration outside the on-board hydrogen system are within a set safety range based on the detection data of the detector of the bottle mouth assembly valve, the controller opens the bottle mouth assembly valve; when the controller determines that the pressure of the hydrogen in the hydrogen supply pipeline is within a safe setting range based on the monitoring data of the pressure transmitter of the bottle mouth assembly valve and the pressure transmitter of the safety valve, the controller fully powers on the fuel cell vehicle.

[0021] According to the starting system for a fuel cell vehicle provided by one of the above embodiments of the present invention, when the controller determines that the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the on-board hydrogen system are not within a set safety range, the controller closes the solenoid valve and cuts off the power to the fuel cell vehicle.

[0022] According to the starting system for a fuel cell vehicle provided by one of the above embodiments of the present invention, when the controller determines that the pressure of hydrogen in the hydrogen supply pipeline is not within a safe setting range, the controller closes the solenoid valve and the bottle mouth assembly valve and feeds back to the vehicle controller to cut off the power to the fuel cell vehicle.

[0023] The advantages of the present invention are: the method improves the impact of high-pressure gas on the pipeline pressure reducer by changing the opening sequence and time of the bottle mouth assembly valve and the electromagnetic valve in the hydrogen supply module, thereby improving the stability and safety of the hydrogen supply pressure. The method effectively controls the hydrogen supply of the hydrogen supply module and achieves the gas pressure matching between the hydrogen supply module and the fuel cell, which can not only ensure the homogeneous supply of hydrogen gas in the hydrogen supply module, improve operability and safety, but also improve the life and performance of the fuel cell, which is conducive to the rapid promotion of the industrialization of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. In the drawings:

[0025] Figure 1 A flowchart showing a method for starting a fuel cell vehicle according to an embodiment of the present invention is shown;

[0026] Figure 2 A block diagram of a starting system for a fuel cell vehicle according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0027] Figure 1-2The following description describes the optional embodiments of the present invention to teach those skilled in the art how to implement and reproduce the present invention. In order to teach the technical solution of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will understand that variations or replacements derived from these embodiments will fall within the scope of protection of the present invention. Those skilled in the art will understand that the following features can be combined in various ways to form multiple variations of the present invention. Thus, the present invention is not limited to the following optional embodiments, but is only limited by the claims and their equivalents.

[0028] Figure 1 A flowchart of a startup method according to an embodiment of the present invention is shown, wherein the startup method comprises a plurality of steps:

[0029] Step 1: initially power on the fuel cell vehicle and open the solenoid valve;

[0030] Step 2: Initially open the bottle mouth assembly valve and then close it at a set time;

[0031] Step 3: Determine whether the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the vehicle hydrogen system are within the set safety range. If "yes", go to step 4;

[0032] Step 4: Open the bottle mouth assembly valve;

[0033] Step 5: Determine whether the pressure of hydrogen in the hydrogen supply pipeline is within the safety setting range. If yes, proceed to step 6; and

[0034] Step 6: The fuel cell vehicle is fully powered on, the power battery starts working and the fuel cell is ready to start.

[0035] According to the method for starting a fuel cell vehicle provided by one embodiment of the present invention, it is determined whether the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the onboard hydrogen system are within a set safety range. If "no", the following steps are performed;

[0036] Step 7: Close the solenoid valve; and

[0037] Step 9: Feedback is sent to the vehicle controller to cut off the power supply of the fuel cell vehicle.

[0038] According to the method for starting a fuel cell vehicle provided by one embodiment of the present invention, it is determined whether the pressure of hydrogen in the hydrogen supply pipeline is within a safe setting range. If "no", the following steps are performed:

[0039] Step 8: Close the solenoid valve and bottle assembly valve, then proceed to Step 9.

[0040] Figure 2The invention shows a starting system of a fuel cell vehicle according to an embodiment of the present invention, wherein the on-board hydrogen system of the fuel cell vehicle comprises a hydrogen supply component A, a hydrogen storage component B, a hydrogen injection component C, a fuel cell engine D and a controller E, the hydrogen storage component B comprises a plurality of hydrogen storage cylinders B1 and a plurality of bottle mouth component valves B2, each bottle mouth component valve B2 is provided with a detector (not shown) and a pressure transmitter (not shown), the hydrogen supply component A comprises a solenoid valve A1, a safety valve A2 and a manual valve A3, the safety valve A2 is provided with a pressure transmitter (not shown), the hydrogen injection component C is respectively connected to the solenoid valve A1 of the hydrogen supply component A and the plurality of hydrogen storage components B through pipelines. The bottle mouth assembly valve B2 is connected, each bottle mouth assembly valve B2 is connected to a hydrogen storage cylinder B1, the solenoid valve A1 is connected to the safety valve A2 through a pipeline, and the solenoid valve A1 is also connected to the manual valve A3 and the fuel cell engine D through a three-way pipeline. The controller E is respectively connected to the solenoid valve A1, the bottle mouth assembly valve B2, the detector and pressure transmitter of the bottle mouth assembly valve B2, the pressure transmitter on the safety valve A2 and the fuel cell engine D. The detector of the bottle mouth assembly valve B2 is used to detect the temperature and concentration of the hydrogen in the hydrogen storage cylinder B1, and the pressure transmitter of the bottle mouth assembly valve B2 and the pressure transmitter of the safety valve A2 are used to detect the pressure of the hydrogen.

[0041] According to the starting system of a fuel cell vehicle provided by one of the above embodiments of the present invention, when the fuel cell vehicle is started, the controller E initially powers on the fuel cell vehicle and opens the solenoid valve A1; the controller E initially opens the bottle mouth assembly valve B2 and then closes it at a set time; when the controller E determines that the temperature of the hydrogen in the hydrogen storage bottle and the hydrogen concentration outside the on-board hydrogen system are within a set safety range based on the detection data of the detector of the bottle mouth assembly valve B2, the controller E opens the bottle mouth assembly valve B2; when the controller E determines that the pressure of the hydrogen in the hydrogen supply pipeline is within a safe setting range based on the monitoring data of the pressure transmitter of the bottle mouth assembly valve B2 and the pressure transmitter of the safety valve A2, the controller E fully powers on the fuel cell vehicle.

[0042] According to the starting system of a fuel cell vehicle provided by one of the above embodiments of the present invention, when the controller E determines that the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the on-board hydrogen system are not within a set safety range, the controller E closes the solenoid valve A1 and cuts off the power to the fuel cell vehicle.

[0043] According to the starting system of a fuel cell vehicle provided by one of the above embodiments of the present invention, when the controller E determines that the pressure of hydrogen in the hydrogen supply pipeline is not within a safe setting range, the controller E closes the solenoid valve A1 and the bottle mouth assembly valve B2 to feedback to the vehicle controller to cut off the power of the fuel cell vehicle.

[0044] The advantage of the fuel cell vehicle startup method provided according to the embodiment of the present invention is that the method improves the impact of high-pressure gas on the pipeline pressure reducer by changing the opening sequence and time of the bottle mouth assembly valve and the solenoid valve in the hydrogen supply module, thereby improving the stability and safety of the hydrogen supply pressure. The method effectively controls the hydrogen supply of the hydrogen supply module and achieves the gas pressure matching between the hydrogen supply module and the fuel cell, which can not only ensure the homogeneous supply of hydrogen in the hydrogen supply module, improve operability and safety, but also improve the life and performance of the fuel cell, which is conducive to the rapid promotion of the industrialization of new energy vehicles.

[0045] The present invention has been introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for starting a fuel cell vehicle, characterized in that ,The startup method includes multiple steps: Step 1: initially power on the fuel cell vehicle and open the solenoid valve; Step 2: Initially open the bottle mouth assembly valve and then close it at a set time; Step 3: Determine whether the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the onboard hydrogen system are within the set safety range. If "yes", go to step 4; if "no", go to step 7; Step 4: Open the bottle mouth assembly valve; Step 5: Determine whether the pressure of hydrogen in the hydrogen supply pipeline is within the safety setting range. If yes, proceed to step 6; and Step 6: The fuel cell vehicle is fully powered on, the power battery starts working and the fuel cell is ready for startup; Step 7: Close the solenoid valve; and Step 9: Feedback is sent to the vehicle controller to cut off the power supply of the fuel cell vehicle.

2. The method for starting a fuel cell vehicle according to claim 1, characterized in that: The step 5 determines whether the pressure of hydrogen in the hydrogen supply pipeline is within the safety setting range. If "no", perform the following steps: Step 8: Close the solenoid valve and bottle assembly valve, then proceed to Step 9.

3. A starting system for a fuel cell vehicle, the starting system comprising a hydrogen supply assembly, a hydrogen storage assembly, a hydrogen injection assembly, a fuel cell engine and a controller, the hydrogen storage assembly comprising a plurality of hydrogen storage cylinders and a plurality of bottle mouth assembly valves, characterized in that: Each bottle mouth assembly valve is provided with a detector and a pressure transmitter, the hydrogen supply assembly includes a solenoid valve, a safety valve and a manual valve, the safety valve is provided with a pressure transmitter, the hydrogen injection assembly is communicated with the solenoid valve of the hydrogen supply assembly and multiple bottle mouth assembly valves of the hydrogen storage assembly through pipelines, each bottle mouth assembly valve is communicated with a hydrogen storage cylinder, the solenoid valve is communicated with the safety valve through a pipeline, and the solenoid valve is also communicated with the manual valve and the fuel cell engine through a three-way pipeline, the controller is respectively connected to the solenoid valve, the bottle mouth assembly valve, the detector and pressure transmitter of the bottle mouth assembly valve, the pressure transmitter on the safety valve and the fuel cell engine, the starting method for the starting system application of the fuel cell vehicle includes multiple steps: Step 1: initially power on the fuel cell vehicle and open the solenoid valve; Step 2: Initially open the bottle mouth assembly valve and then close it at a set time; Step 3: Determine whether the temperature of the hydrogen in the hydrogen storage cylinder and the hydrogen concentration outside the onboard hydrogen system are within the set safety range. If "yes", go to step 4; if "no", go to step 7; Step 4: Open the bottle mouth assembly valve; Step 5: Determine whether the pressure of hydrogen in the hydrogen supply pipeline is within the safety setting range. If yes, proceed to step 6; and Step 6: The fuel cell vehicle is fully powered on, the power battery starts working and the fuel cell is ready for startup; Step 7: Close the solenoid valve; as well as Step 9: Feedback is sent to the vehicle controller to cut off the power supply of the fuel cell vehicle.

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